livecodingspace-app/public/drivers/model/aframe/aframe-master.min.js

(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.AFRAME = f()}})(function(){var define,module,exports;return (function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
function anArray(r){return r.BYTES_PER_ELEMENT&&"[object ArrayBuffer]"===str.call(r.buffer)||Array.isArray(r)}var str=Object.prototype.toString;module.exports=anArray;
},{}],2:[function(require,module,exports){
module.exports=function(e,n){return"number"==typeof e?e:"number"==typeof n?n:0};
},{}],3:[function(require,module,exports){
"use strict";function getLens(o){var r=o.length;if(r%4>0)throw new Error("Invalid string. Length must be a multiple of 4");var e=o.indexOf("=");return-1===e&&(e=r),[e,e===r?0:4-e%4]}function byteLength(o){var r=getLens(o),e=r[0],t=r[1];return 3*(e+t)/4-t}function _byteLength(o,r,e){return 3*(r+e)/4-e}function toByteArray(o){for(var r,e=getLens(o),t=e[0],n=e[1],u=new Arr(_byteLength(o,t,n)),p=0,a=n>0?t-4:t,h=0;h<a;h+=4)r=revLookup[o.charCodeAt(h)]<<18|revLookup[o.charCodeAt(h+1)]<<12|revLookup[o.charCodeAt(h+2)]<<6|revLookup[o.charCodeAt(h+3)],u[p++]=r>>16&255,u[p++]=r>>8&255,u[p++]=255&r;return 2===n&&(r=revLookup[o.charCodeAt(h)]<<2|revLookup[o.charCodeAt(h+1)]>>4,u[p++]=255&r),1===n&&(r=revLookup[o.charCodeAt(h)]<<10|revLookup[o.charCodeAt(h+1)]<<4|revLookup[o.charCodeAt(h+2)]>>2,u[p++]=r>>8&255,u[p++]=255&r),u}function tripletToBase64(o){return lookup[o>>18&63]+lookup[o>>12&63]+lookup[o>>6&63]+lookup[63&o]}function encodeChunk(o,r,e){for(var t,n=[],u=r;u<e;u+=3)t=(o[u]<<16&16711680)+(o[u+1]<<8&65280)+(255&o[u+2]),n.push(tripletToBase64(t));return n.join("")}function fromByteArray(o){for(var r,e=o.length,t=e%3,n=[],u=0,p=e-t;u<p;u+=16383)n.push(encodeChunk(o,u,u+16383>p?p:u+16383));return 1===t?(r=o[e-1],n.push(lookup[r>>2]+lookup[r<<4&63]+"==")):2===t&&(r=(o[e-2]<<8)+o[e-1],n.push(lookup[r>>10]+lookup[r>>4&63]+lookup[r<<2&63]+"=")),n.join("")}exports.byteLength=byteLength,exports.toByteArray=toByteArray,exports.fromByteArray=fromByteArray;for(var lookup=[],revLookup=[],Arr="undefined"!=typeof Uint8Array?Uint8Array:Array,code="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/",i=0,len=code.length;i<len;++i)lookup[i]=code[i],revLookup[code.charCodeAt(i)]=i;revLookup["-".charCodeAt(0)]=62,revLookup["_".charCodeAt(0)]=63;
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},{"buffer":6}],6:[function(require,module,exports){
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TypeError("val must be string, number or Buffer")}function arrayIndexOf(t,e,r,n,f){function i(t,e){return 1===o?t[e]:t.readUInt16BE(e*o)}var o=1,u=t.length,s=e.length;if(void 0!==n&&("ucs2"===(n=String(n).toLowerCase())||"ucs-2"===n||"utf16le"===n||"utf-16le"===n)){if(t.length<2||e.length<2)return-1;o=2,u/=2,s/=2,r/=2}var a;if(f){var h=-1;for(a=r;a<u;a++)if(i(t,a)===i(e,-1===h?0:a-h)){if(-1===h&&(h=a),a-h+1===s)return h*o}else-1!==h&&(a-=a-h),h=-1}else for(r+s>u&&(r=u-s),a=r;a>=0;a--){for(var c=!0,l=0;l<s;l++)if(i(t,a+l)!==i(e,l)){c=!1;break}if(c)return a}return-1}function hexWrite(t,e,r,n){r=Number(r)||0;var f=t.length-r;n?(n=Number(n))>f&&(n=f):n=f;var i=e.length;if(i%2!=0)throw new TypeError("Invalid hex string");n>i/2&&(n=i/2);for(var o=0;o<n;++o){var u=parseInt(e.substr(2*o,2),16);if(isNaN(u))return o;t[r+o]=u}return o}function utf8Write(t,e,r,n){return blitBuffer(utf8ToBytes(e,t.length-r),t,r,n)}function asciiWrite(t,e,r,n){return blitBuffer(asciiToBytes(e),t,r,n)}function latin1Write(t,e,r,n){return asciiWrite(t,e,r,n)}function base64Write(t,e,r,n){return blitBuffer(base64ToBytes(e),t,r,n)}function ucs2Write(t,e,r,n){return blitBuffer(utf16leToBytes(e,t.length-r),t,r,n)}function base64Slice(t,e,r){return 0===e&&r===t.length?base64.fromByteArray(t):base64.fromByteArray(t.slice(e,r))}function utf8Slice(t,e,r){r=Math.min(t.length,r);for(var n=[],f=e;f<r;){var i=t[f],o=null,u=i>239?4:i>223?3:i>191?2:1;if(f+u<=r){var s,a,h,c;switch(u){case 1:i<128&&(o=i);break;case 2:s=t[f+1],128==(192&s)&&(c=(31&i)<<6|63&s)>127&&(o=c);break;case 3:s=t[f+1],a=t[f+2],128==(192&s)&&128==(192&a)&&(c=(15&i)<<12|(63&s)<<6|63&a)>2047&&(c<55296||c>57343)&&(o=c);break;case 4:s=t[f+1],a=t[f+2],h=t[f+3],128==(192&s)&&128==(192&a)&&128==(192&h)&&(c=(15&i)<<18|(63&s)<<12|(63&a)<<6|63&h)>65535&&c<1114112&&(o=c)}}null===o?(o=65533,u=1):o>65535&&(o-=65536,n.push(o>>>10&1023|55296),o=56320|1023&o),n.push(o),f+=u}return decodeCodePointsArray(n)}function decodeCodePointsArray(t){var e=t.length;if(e<=MAX_ARGUMENTS_LENGTH)return String.fromCharCode.apply(String,t);for(var r="",n=0;n<e;)r+=String.fromCharCode.apply(String,t.slice(n,n+=MAX_ARGUMENTS_LENGTH));return r}function asciiSlice(t,e,r){var n="";r=Math.min(t.length,r);for(var f=e;f<r;++f)n+=String.fromCharCode(127&t[f]);return n}function latin1Slice(t,e,r){var n="";r=Math.min(t.length,r);for(var f=e;f<r;++f)n+=String.fromCharCode(t[f]);return n}function hexSlice(t,e,r){var n=t.length;(!e||e<0)&&(e=0),(!r||r<0||r>n)&&(r=n);for(var f="",i=e;i<r;++i)f+=toHex(t[i]);return f}function utf16leSlice(t,e,r){for(var n=t.slice(e,r),f="",i=0;i<n.length;i+=2)f+=String.fromCharCode(n[i]+256*n[i+1]);return f}function checkOffset(t,e,r){if(t%1!=0||t<0)throw new RangeError("offset is not uint");if(t+e>r)throw new RangeError("Trying to access beyond buffer length")}function checkInt(t,e,r,n,f,i){if(!Buffer.isBuffer(t))throw new TypeError('"buffer" argument must be a Buffer instance');if(e>f||e<i)throw new RangeError('"value" argument is out of bounds');if(r+n>t.length)throw new RangeError("Index out of range")}function objectWriteUInt16(t,e,r,n){e<0&&(e=65535+e+1);for(var f=0,i=Math.min(t.length-r,2);f<i;++f)t[r+f]=(e&255<<8*(n?f:1-f))>>>8*(n?f:1-f)}function objectWriteUInt32(t,e,r,n){e<0&&(e=4294967295+e+1);for(var f=0,i=Math.min(t.length-r,4);f<i;++f)t[r+f]=e>>>8*(n?f:3-f)&255}function checkIEEE754(t,e,r,n,f,i){if(r+n>t.length)throw new RangeError("Index out of range");if(r<0)throw new RangeError("Index out of range")}function writeFloat(t,e,r,n,f){return f||checkIEEE754(t,e,r,4,3.4028234663852886e38,-3.4028234663852886e38),ieee754.write(t,e,r,n,23,4),r+4}function writeDouble(t,e,r,n,f){return f||checkIEEE754(t,e,r,8,1.7976931348623157e308,-1.7976931348623157e308),ieee754.write(t,e,r,n,52,8),r+8}function base64clean(t){if(t=stringtrim(t).replace(INVALID_BASE64_RE,""),t.length<2)return"";for(;t.length%4!=0;)t+="=";return t}function stringtrim(t){return t.trim?t.trim():t.replace(/^\s+|\s+$/g,"")}function 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base64ToBytes(t){return base64.toByteArray(base64clean(t))}function blitBuffer(t,e,r,n){for(var f=0;f<n&&!(f+r>=e.length||f>=t.length);++f)e[f+r]=t[f];return f}function isnan(t){return t!==t}var base64=require("base64-js"),ieee754=require("ieee754"),isArray=require("isarray");exports.Buffer=Buffer,exports.SlowBuffer=SlowBuffer,exports.INSPECT_MAX_BYTES=50,Buffer.TYPED_ARRAY_SUPPORT=void 0!==global.TYPED_ARRAY_SUPPORT?global.TYPED_ARRAY_SUPPORT:typedArraySupport(),exports.kMaxLength=kMaxLength(),Buffer.poolSize=8192,Buffer._augment=function(t){return t.__proto__=Buffer.prototype,t},Buffer.from=function(t,e,r){return from(null,t,e,r)},Buffer.TYPED_ARRAY_SUPPORT&&(Buffer.prototype.__proto__=Uint8Array.prototype,Buffer.__proto__=Uint8Array,"undefined"!=typeof Symbol&&Symbol.species&&Buffer[Symbol.species]===Buffer&&Object.defineProperty(Buffer,Symbol.species,{value:null,configurable:!0})),Buffer.alloc=function(t,e,r){return alloc(null,t,e,r)},Buffer.allocUnsafe=function(t){return 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"use strict";var GetIntrinsic=require("./GetIntrinsic"),$Object=GetIntrinsic("%Object%"),$TypeError=GetIntrinsic("%TypeError%"),$String=GetIntrinsic("%String%"),assertRecord=require("./helpers/assertRecord"),$isNaN=require("./helpers/isNaN"),$isFinite=require("./helpers/isFinite"),sign=require("./helpers/sign"),mod=require("./helpers/mod"),IsCallable=require("is-callable"),toPrimitive=require("es-to-primitive/es5"),has=require("has"),ES5={ToPrimitive:toPrimitive,ToBoolean:function(e){return!!e},ToNumber:function(e){return+e},ToInteger:function(e){var r=this.ToNumber(e);return $isNaN(r)?0:0!==r&&$isFinite(r)?sign(r)*Math.floor(Math.abs(r)):r},ToInt32:function(e){return this.ToNumber(e)>>0},ToUint32:function(e){return this.ToNumber(e)>>>0},ToUint16:function(e){var r=this.ToNumber(e);if($isNaN(r)||0===r||!$isFinite(r))return 0;var t=sign(r)*Math.floor(Math.abs(r));return mod(t,65536)},ToString:function(e){return $String(e)},ToObject:function(e){return this.CheckObjectCoercible(e),$Object(e)},CheckObjectCoercible:function(e,r){if(null==e)throw new $TypeError(r||"Cannot call method on "+e);return e},IsCallable:IsCallable,SameValue:function(e,r){return e===r?0!==e||1/e==1/r:$isNaN(e)&&$isNaN(r)},Type:function(e){return null===e?"Null":void 0===e?"Undefined":"function"==typeof e||"object"==typeof e?"Object":"number"==typeof e?"Number":"boolean"==typeof e?"Boolean":"string"==typeof e?"String":void 0},IsPropertyDescriptor:function(e){if("Object"!==this.Type(e))return!1;var r={"[[Configurable]]":!0,"[[Enumerable]]":!0,"[[Get]]":!0,"[[Set]]":!0,"[[Value]]":!0,"[[Writable]]":!0};for(var t in e)if(has(e,t)&&!r[t])return!1;var i=has(e,"[[Value]]"),o=has(e,"[[Get]]")||has(e,"[[Set]]");if(i&&o)throw new $TypeError("Property Descriptors may not be both accessor and data descriptors");return!0},IsAccessorDescriptor:function(e){return void 0!==e&&(assertRecord(this,"Property Descriptor","Desc",e),!(!has(e,"[[Get]]")&&!has(e,"[[Set]]")))},IsDataDescriptor:function(e){return void 0!==e&&(assertRecord(this,"Property Descriptor","Desc",e),!(!has(e,"[[Value]]")&&!has(e,"[[Writable]]")))},IsGenericDescriptor:function(e){return void 0!==e&&(assertRecord(this,"Property Descriptor","Desc",e),!this.IsAccessorDescriptor(e)&&!this.IsDataDescriptor(e))},FromPropertyDescriptor:function(e){if(void 0===e)return e;if(assertRecord(this,"Property Descriptor","Desc",e),this.IsDataDescriptor(e))return{value:e["[[Value]]"],writable:!!e["[[Writable]]"],enumerable:!!e["[[Enumerable]]"],configurable:!!e["[[Configurable]]"]};if(this.IsAccessorDescriptor(e))return{get:e["[[Get]]"],set:e["[[Set]]"],enumerable:!!e["[[Enumerable]]"],configurable:!!e["[[Configurable]]"]};throw new $TypeError("FromPropertyDescriptor must be called with a fully populated Property Descriptor")},ToPropertyDescriptor:function(e){if("Object"!==this.Type(e))throw new $TypeError("ToPropertyDescriptor requires an object");var r={};if(has(e,"enumerable")&&(r["[[Enumerable]]"]=this.ToBoolean(e.enumerable)),has(e,"configurable")&&(r["[[Configurable]]"]=this.ToBoolean(e.configurable)),has(e,"value")&&(r["[[Value]]"]=e.value),has(e,"writable")&&(r["[[Writable]]"]=this.ToBoolean(e.writable)),has(e,"get")){var t=e.get;if(void 0!==t&&!this.IsCallable(t))throw new TypeError("getter must be a function");r["[[Get]]"]=t}if(has(e,"set")){var i=e.set;if(void 0!==i&&!this.IsCallable(i))throw new $TypeError("setter must be a function");r["[[Set]]"]=i}if((has(r,"[[Get]]")||has(r,"[[Set]]"))&&(has(r,"[[Value]]")||has(r,"[[Writable]]")))throw new $TypeError("Invalid property descriptor. Cannot both specify accessors and a value or writable attribute");return r}};module.exports=ES5;
},{"./GetIntrinsic":14,"./helpers/assertRecord":16,"./helpers/isFinite":17,"./helpers/isNaN":18,"./helpers/mod":19,"./helpers/sign":20,"es-to-primitive/es5":21,"has":28,"is-callable":32}],16:[function(require,module,exports){
"use strict";var GetIntrinsic=require("../GetIntrinsic"),$TypeError=GetIntrinsic("%TypeError%"),$SyntaxError=GetIntrinsic("%SyntaxError%"),has=require("has"),predicates={"Property Descriptor":function(r,e){if("Object"!==r.Type(e))return!1;var t={"[[Configurable]]":!0,"[[Enumerable]]":!0,"[[Get]]":!0,"[[Set]]":!0,"[[Value]]":!0,"[[Writable]]":!0};for(var n in e)if(has(e,n)&&!t[n])return!1;var o=has(e,"[[Value]]"),a=has(e,"[[Get]]")||has(e,"[[Set]]");if(o&&a)throw new $TypeError("Property Descriptors may not be both accessor and data descriptors");return!0}};module.exports=function(r,e,t,n){var o=predicates[e];if("function"!=typeof o)throw new $SyntaxError("unknown record type: "+e);if(!o(r,n))throw new $TypeError(t+" must be a "+e);console.log(o(r,n),n)};
},{"../GetIntrinsic":14,"has":28}],17:[function(require,module,exports){
var $isNaN=Number.isNaN||function(e){return e!==e};module.exports=Number.isFinite||function(e){return"number"==typeof e&&!$isNaN(e)&&e!==1/0&&e!==-1/0};
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module.exports=function(e){return e>=0?1:-1};
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},{"./helpers/isPrimitive":22,"is-callable":32}],22:[function(require,module,exports){
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},{"dtype":13}],24:[function(require,module,exports){
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},{"is-callable":32}],25:[function(require,module,exports){
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},{}],26:[function(require,module,exports){
"use strict";var implementation=require("./implementation");module.exports=Function.prototype.bind||implementation;
},{"./implementation":25}],27:[function(require,module,exports){
(function (global){
var win;win="undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:{},module.exports=win;
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"use strict";var bind=require("function-bind");module.exports=bind.call(Function.call,Object.prototype.hasOwnProperty);
},{"function-bind":26}],29:[function(require,module,exports){
exports.read=function(a,o,t,r,h){var M,p,w=8*h-r-1,f=(1<<w)-1,e=f>>1,i=-7,N=t?h-1:0,n=t?-1:1,s=a[o+N];for(N+=n,M=s&(1<<-i)-1,s>>=-i,i+=w;i>0;M=256*M+a[o+N],N+=n,i-=8);for(p=M&(1<<-i)-1,M>>=-i,i+=r;i>0;p=256*p+a[o+N],N+=n,i-=8);if(0===M)M=1-e;else{if(M===f)return p?NaN:1/0*(s?-1:1);p+=Math.pow(2,r),M-=e}return(s?-1:1)*p*Math.pow(2,M-r)},exports.write=function(a,o,t,r,h,M){var p,w,f,e=8*M-h-1,i=(1<<e)-1,N=i>>1,n=23===h?Math.pow(2,-24)-Math.pow(2,-77):0,s=r?0:M-1,u=r?1:-1,l=o<0||0===o&&1/o<0?1:0;for(o=Math.abs(o),isNaN(o)||o===1/0?(w=isNaN(o)?1:0,p=i):(p=Math.floor(Math.log(o)/Math.LN2),o*(f=Math.pow(2,-p))<1&&(p--,f*=2),o+=p+N>=1?n/f:n*Math.pow(2,1-N),o*f>=2&&(p++,f/=2),p+N>=i?(w=0,p=i):p+N>=1?(w=(o*f-1)*Math.pow(2,h),p+=N):(w=o*Math.pow(2,N-1)*Math.pow(2,h),p=0));h>=8;a[t+s]=255&w,s+=u,w/=256,h-=8);for(p=p<<h|w,e+=h;e>0;a[t+s]=255&p,s+=u,p/=256,e-=8);a[t+s-u]|=128*l};
},{}],30:[function(require,module,exports){
"function"==typeof Object.create?module.exports=function(t,e){e&&(t.super_=e,t.prototype=Object.create(e.prototype,{constructor:{value:t,enumerable:!1,writable:!0,configurable:!0}}))}:module.exports=function(t,e){if(e){t.super_=e;var o=function(){};o.prototype=e.prototype,t.prototype=new o,t.prototype.constructor=t}};
},{}],31:[function(require,module,exports){
function isBuffer(f){return!!f.constructor&&"function"==typeof f.constructor.isBuffer&&f.constructor.isBuffer(f)}function isSlowBuffer(f){return"function"==typeof f.readFloatLE&&"function"==typeof f.slice&&isBuffer(f.slice(0,0))}module.exports=function(f){return null!=f&&(isBuffer(f)||isSlowBuffer(f)||!!f._isBuffer)};
},{}],32:[function(require,module,exports){
"use strict";var fnToStr=Function.prototype.toString,constructorRegex=/^\s*class\b/,isES6ClassFn=function(t){try{var n=fnToStr.call(t);return constructorRegex.test(n)}catch(t){return!1}},tryFunctionObject=function(t){try{return!isES6ClassFn(t)&&(fnToStr.call(t),!0)}catch(t){return!1}},toStr=Object.prototype.toString,fnClass="[object Function]",genClass="[object GeneratorFunction]",hasToStringTag="function"==typeof Symbol&&"symbol"==typeof Symbol.toStringTag;module.exports=function(t){if(!t)return!1;if("function"!=typeof t&&"object"!=typeof t)return!1;if("function"==typeof t&&!t.prototype)return!0;if(hasToStringTag)return tryFunctionObject(t);if(isES6ClassFn(t))return!1;var n=toStr.call(t);return n===fnClass||n===genClass};
},{}],33:[function(require,module,exports){
function isFunction(o){var t=toString.call(o);return"[object Function]"===t||"function"==typeof o&&"[object RegExp]"!==t||"undefined"!=typeof window&&(o===window.setTimeout||o===window.alert||o===window.confirm||o===window.prompt)}module.exports=isFunction;var toString=Object.prototype.toString;
},{}],34:[function(require,module,exports){
"use strict";module.exports=function(t){var e=typeof t;return null!==t&&("object"===e||"function"===e)};
},{}],35:[function(require,module,exports){
var toString={}.toString;module.exports=Array.isArray||function(r){return"[object Array]"==toString.call(r)};
},{}],36:[function(require,module,exports){
function TextLayout(t){this.glyphs=[],this._measure=this.computeMetrics.bind(this),this.update(t)}function addGetter(t){Object.defineProperty(TextLayout.prototype,t,{get:wrapper(t),configurable:!0})}function wrapper(t){return new Function(["return function "+t+"() {","  return this._"+t,"}"].join("\n"))()}function getGlyphById(t,e){if(!t.chars||0===t.chars.length)return null;var r=findChar(t.chars,e);return r>=0?t.chars[r]:null}function getXHeight(t){for(var e=0;e<X_HEIGHTS.length;e++){var r=X_HEIGHTS[e].charCodeAt(0),n=findChar(t.chars,r);if(n>=0)return t.chars[n].height}return 0}function getMGlyph(t){for(var e=0;e<M_WIDTHS.length;e++){var r=M_WIDTHS[e].charCodeAt(0),n=findChar(t.chars,r);if(n>=0)return t.chars[n]}return 0}function getCapHeight(t){for(var e=0;e<CAP_HEIGHTS.length;e++){var r=CAP_HEIGHTS[e].charCodeAt(0),n=findChar(t.chars,r);if(n>=0)return t.chars[n].height}return 0}function getKerning(t,e,r){if(!t.kernings||0===t.kernings.length)return 0;for(var n=t.kernings,i=0;i<n.length;i++){var a=n[i];if(a.first===e&&a.second===r)return a.amount}return 0}function getAlignType(t){return"center"===t?ALIGN_CENTER:"right"===t?ALIGN_RIGHT:ALIGN_LEFT}function findChar(t,e,r){r=r||0;for(var n=r;n<t.length;n++)if(t[n].id===e)return n;return-1}var wordWrap=require("word-wrapper"),xtend=require("xtend"),number=require("as-number"),X_HEIGHTS=["x","e","a","o","n","s","r","c","u","m","v","w","z"],M_WIDTHS=["m","w"],CAP_HEIGHTS=["H","I","N","E","F","K","L","T","U","V","W","X","Y","Z"],TAB_ID="\t".charCodeAt(0),SPACE_ID=" ".charCodeAt(0),ALIGN_LEFT=0,ALIGN_CENTER=1,ALIGN_RIGHT=2;module.exports=function(t){return new TextLayout(t)},TextLayout.prototype.update=function(t){if(t=xtend({measure:this._measure},t),this._opt=t,this._opt.tabSize=number(this._opt.tabSize,4),!t.font)throw new Error("must provide a valid bitmap font");var e=this.glyphs,r=t.text||"",n=t.font;this._setupSpaceGlyphs(n);var i=wordWrap.lines(r,t),a=t.width||0;e.length=0;var h=i.reduce(function(t,e){return Math.max(t,e.width,a)},0),o=0,s=0,c=number(t.lineHeight,n.common.lineHeight),u=n.common.base,l=c-u,p=t.letterSpacing||0,f=c*i.length-l,d=getAlignType(this._opt.align);s-=f,this._width=h,this._height=f,this._descender=c-u,this._baseline=u,this._xHeight=getXHeight(n),this._capHeight=getCapHeight(n),this._lineHeight=c,this._ascender=c-l-this._xHeight;var g=this;i.forEach(function(t,i){for(var a,u=t.start,l=t.end,f=t.width,_=u;_<l;_++){var y=r.charCodeAt(_),G=g.getGlyph(n,y);if(G){a&&(o+=getKerning(n,a.id,G.id));var T=o;d===ALIGN_CENTER?T+=(h-f)/2:d===ALIGN_RIGHT&&(T+=h-f),e.push({position:[T,s],data:G,index:_,line:i}),o+=G.xadvance+p,a=G}}s+=c,o=0}),this._linesTotal=i.length},TextLayout.prototype._setupSpaceGlyphs=function(t){if(this._fallbackSpaceGlyph=null,this._fallbackTabGlyph=null,t.chars&&0!==t.chars.length){var e=getGlyphById(t,SPACE_ID)||getMGlyph(t)||t.chars[0],r=this._opt.tabSize*e.xadvance;this._fallbackSpaceGlyph=e,this._fallbackTabGlyph=xtend(e,{x:0,y:0,xadvance:r,id:TAB_ID,xoffset:0,yoffset:0,width:0,height:0})}},TextLayout.prototype.getGlyph=function(t,e){var r=getGlyphById(t,e);return r||(e===TAB_ID?this._fallbackTabGlyph:e===SPACE_ID?this._fallbackSpaceGlyph:null)},TextLayout.prototype.computeMetrics=function(t,e,r,n){var i,a,h=this._opt.letterSpacing||0,o=this._opt.font,s=0,c=0,u=0;if(!o.chars||0===o.chars.length)return{start:e,end:e,width:0};r=Math.min(t.length,r);for(var l=e;l<r;l++){var p=t.charCodeAt(l),i=this.getGlyph(o,p);if(i){i.xoffset;s+=a?getKerning(o,a.id,i.id):0;var f=s+i.xadvance+h,d=s+i.width;if(d>=n||f>=n)break;s=f,c=d,a=i}u++}return a&&(c+=a.xoffset),{start:e,end:e+u,width:c}},["width","height","descender","ascender","xHeight","baseline","capHeight","lineHeight"].forEach(addGetter);
},{"as-number":2,"word-wrapper":70,"xtend":73}],37:[function(require,module,exports){
(function (Buffer){
function isArrayBuffer(r){return"[object ArrayBuffer]"===Object.prototype.toString.call(r)}function getBinaryOpts(r){if(xml2)return xtend(r,{responseType:"arraybuffer"});if(void 0===self.XMLHttpRequest)throw new Error("your browser does not support XHR loading");var e=new self.XMLHttpRequest;return e.overrideMimeType("text/plain; charset=x-user-defined"),xtend({xhr:e},r)}var xhr=require("xhr"),noop=function(){},parseASCII=require("parse-bmfont-ascii"),parseXML=require("parse-bmfont-xml"),readBinary=require("parse-bmfont-binary"),isBinaryFormat=require("./lib/is-binary"),xtend=require("xtend"),xml2=function(){return self.XMLHttpRequest&&"withCredentials"in new XMLHttpRequest}();module.exports=function(r,e){e="function"==typeof e?e:noop,"string"==typeof r?r={uri:r}:r||(r={}),r.binary&&(r=getBinaryOpts(r)),xhr(r,function(t,n,i){if(t)return e(t);if(!/^2/.test(n.statusCode))return e(new Error("http status code: "+n.statusCode));if(!i)return e(new Error("no body result"));var o=!1;if(isArrayBuffer(i)){var a=new Uint8Array(i);i=new Buffer(a,"binary")}isBinaryFormat(i)&&(o=!0,"string"==typeof i&&(i=new Buffer(i,"binary"))),o||(Buffer.isBuffer(i)&&(i=i.toString(r.encoding)),i=i.trim());var s;try{var u=n.headers["content-type"];s=o?readBinary(i):/json/.test(u)||"{"===i.charAt(0)?JSON.parse(i):/xml/.test(u)||"<"===i.charAt(0)?parseXML(i):parseASCII(i)}catch(r){e(new Error("error parsing font "+r.message)),e=noop}e(null,s)})};
}).call(this,require("buffer").Buffer)

},{"./lib/is-binary":38,"buffer":6,"parse-bmfont-ascii":43,"parse-bmfont-binary":44,"parse-bmfont-xml":45,"xhr":71,"xtend":73}],38:[function(require,module,exports){
(function (Buffer){
var equal=require("buffer-equal"),HEADER=new Buffer([66,77,70,3]);module.exports=function(e){return"string"==typeof e?"BMF"===e.substring(0,3):e.length>4&&equal(e.slice(0,4),HEADER)};
}).call(this,require("buffer").Buffer)

},{"buffer":6,"buffer-equal":5}],39:[function(require,module,exports){
"use strict";function toObject(e){if(null===e||void 0===e)throw new TypeError("Object.assign cannot be called with null or undefined");return Object(e)}function shouldUseNative(){try{if(!Object.assign)return!1;var e=new String("abc");if(e[5]="de","5"===Object.getOwnPropertyNames(e)[0])return!1;for(var r={},t=0;t<10;t++)r["_"+String.fromCharCode(t)]=t;if("0123456789"!==Object.getOwnPropertyNames(r).map(function(e){return r[e]}).join(""))return!1;var n={};return"abcdefghijklmnopqrst".split("").forEach(function(e){n[e]=e}),"abcdefghijklmnopqrst"===Object.keys(Object.assign({},n)).join("")}catch(e){return!1}}var getOwnPropertySymbols=Object.getOwnPropertySymbols,hasOwnProperty=Object.prototype.hasOwnProperty,propIsEnumerable=Object.prototype.propertyIsEnumerable;module.exports=shouldUseNative()?Object.assign:function(e,r){for(var t,n,o=toObject(e),a=1;a<arguments.length;a++){t=Object(arguments[a]);for(var s in t)hasOwnProperty.call(t,s)&&(o[s]=t[s]);if(getOwnPropertySymbols){n=getOwnPropertySymbols(t);for(var c=0;c<n.length;c++)propIsEnumerable.call(t,n[c])&&(o[n[c]]=t[n[c]])}}return o};
},{}],40:[function(require,module,exports){
"use strict";var keysShim;if(!Object.keys){var has=Object.prototype.hasOwnProperty,toStr=Object.prototype.toString,isArgs=require("./isArguments"),isEnumerable=Object.prototype.propertyIsEnumerable,hasDontEnumBug=!isEnumerable.call({toString:null},"toString"),hasProtoEnumBug=isEnumerable.call(function(){},"prototype"),dontEnums=["toString","toLocaleString","valueOf","hasOwnProperty","isPrototypeOf","propertyIsEnumerable","constructor"],equalsConstructorPrototype=function(t){var o=t.constructor;return o&&o.prototype===t},excludedKeys={$applicationCache:!0,$console:!0,$external:!0,$frame:!0,$frameElement:!0,$frames:!0,$innerHeight:!0,$innerWidth:!0,$onmozfullscreenchange:!0,$onmozfullscreenerror:!0,$outerHeight:!0,$outerWidth:!0,$pageXOffset:!0,$pageYOffset:!0,$parent:!0,$scrollLeft:!0,$scrollTop:!0,$scrollX:!0,$scrollY:!0,$self:!0,$webkitIndexedDB:!0,$webkitStorageInfo:!0,$window:!0},hasAutomationEqualityBug=function(){if("undefined"==typeof window)return!1;for(var t in window)try{if(!excludedKeys["$"+t]&&has.call(window,t)&&null!==window[t]&&"object"==typeof window[t])try{equalsConstructorPrototype(window[t])}catch(t){return!0}}catch(t){return!0}return!1}(),equalsConstructorPrototypeIfNotBuggy=function(t){if("undefined"==typeof window||!hasAutomationEqualityBug)return equalsConstructorPrototype(t);try{return equalsConstructorPrototype(t)}catch(t){return!1}};keysShim=function(t){var o=null!==t&&"object"==typeof t,r="[object Function]"===toStr.call(t),e=isArgs(t),n=o&&"[object String]"===toStr.call(t),u=[];if(!o&&!r&&!e)throw new TypeError("Object.keys called on a non-object");var s=hasProtoEnumBug&&r;if(n&&t.length>0&&!has.call(t,0))for(var a=0;a<t.length;++a)u.push(String(a));if(e&&t.length>0)for(var l=0;l<t.length;++l)u.push(String(l));else for(var i in t)s&&"prototype"===i||!has.call(t,i)||u.push(String(i));if(hasDontEnumBug)for(var c=equalsConstructorPrototypeIfNotBuggy(t),p=0;p<dontEnums.length;++p)c&&"constructor"===dontEnums[p]||!has.call(t,dontEnums[p])||u.push(dontEnums[p]);return u}}module.exports=keysShim;
},{"./isArguments":42}],41:[function(require,module,exports){
"use strict";var slice=Array.prototype.slice,isArgs=require("./isArguments"),origKeys=Object.keys,keysShim=origKeys?function(e){return origKeys(e)}:require("./implementation"),originalKeys=Object.keys;keysShim.shim=function(){if(Object.keys){(function(){var e=Object.keys(arguments);return e&&e.length===arguments.length})(1,2)||(Object.keys=function(e){return originalKeys(isArgs(e)?slice.call(e):e)})}else Object.keys=keysShim;return Object.keys||keysShim},module.exports=keysShim;
},{"./implementation":40,"./isArguments":42}],42:[function(require,module,exports){
"use strict";var toStr=Object.prototype.toString;module.exports=function(t){var e=toStr.call(t),o="[object Arguments]"===e;return o||(o="[object Array]"!==e&&null!==t&&"object"==typeof t&&"number"==typeof t.length&&t.length>=0&&"[object Function]"===toStr.call(t.callee)),o};
},{}],43:[function(require,module,exports){
function splitLine(e,r){if(!(e=e.replace(/\t+/g," ").trim()))return null;var t=e.indexOf(" ");if(-1===t)throw new Error("no named row at line "+r);var a=e.substring(0,t);e=e.substring(t+1),e=e.replace(/letter=[\'\"]\S+[\'\"]/gi,""),e=e.split("="),e=e.map(function(e){return e.trim().match(/(".*?"|[^"\s]+)+(?=\s*|\s*$)/g)});for(var n=[],i=0;i<e.length;i++){var s=e[i];0===i?n.push({key:s[0],data:""}):i===e.length-1?n[n.length-1].data=parseData(s[0]):(n[n.length-1].data=parseData(s[0]),n.push({key:s[1],data:""}))}var o={key:a,data:{}};return n.forEach(function(e){o.data[e.key]=e.data}),o}function parseData(e){return e&&0!==e.length?0===e.indexOf('"')||0===e.indexOf("'")?e.substring(1,e.length-1):-1!==e.indexOf(",")?parseIntList(e):parseInt(e,10):""}function parseIntList(e){return e.split(",").map(function(e){return parseInt(e,10)})}module.exports=function(e){if(!e)throw new Error("no data provided");e=e.toString().trim();var r={pages:[],chars:[],kernings:[]},t=e.split(/\r\n?|\n/g);if(0===t.length)throw new Error("no data in BMFont file");for(var a=0;a<t.length;a++){var n=splitLine(t[a],a);if(n)if("page"===n.key){if("number"!=typeof n.data.id)throw new Error("malformed file at line "+a+" -- needs page id=N");if("string"!=typeof n.data.file)throw new Error("malformed file at line "+a+' -- needs page file="path"');r.pages[n.data.id]=n.data.file}else"chars"===n.key||"kernings"===n.key||("char"===n.key?r.chars.push(n.data):"kerning"===n.key?r.kernings.push(n.data):r[n.key]=n.data)}return r};
},{}],44:[function(require,module,exports){
function readBlock(r,e,n){if(n>e.length-1)return 0;var a=e.readUInt8(n++),t=e.readInt32LE(n);switch(n+=4,a){case 1:r.info=readInfo(e,n);break;case 2:r.common=readCommon(e,n);break;case 3:r.pages=readPages(e,n,t);break;case 4:r.chars=readChars(e,n,t);break;case 5:r.kernings=readKernings(e,n,t)}return 5+t}function readInfo(r,e){var n={};n.size=r.readInt16LE(e);var a=r.readUInt8(e+2);return n.smooth=a>>7&1,n.unicode=a>>6&1,n.italic=a>>5&1,n.bold=a>>4&1,a>>3&1&&(n.fixedHeight=1),n.charset=r.readUInt8(e+3)||"",n.stretchH=r.readUInt16LE(e+4),n.aa=r.readUInt8(e+6),n.padding=[r.readInt8(e+7),r.readInt8(e+8),r.readInt8(e+9),r.readInt8(e+10)],n.spacing=[r.readInt8(e+11),r.readInt8(e+12)],n.outline=r.readUInt8(e+13),n.face=readStringNT(r,e+14),n}function readCommon(r,e){var n={};n.lineHeight=r.readUInt16LE(e),n.base=r.readUInt16LE(e+2),n.scaleW=r.readUInt16LE(e+4),n.scaleH=r.readUInt16LE(e+6),n.pages=r.readUInt16LE(e+8);r.readUInt8(e+10);return n.packed=0,n.alphaChnl=r.readUInt8(e+11),n.redChnl=r.readUInt8(e+12),n.greenChnl=r.readUInt8(e+13),n.blueChnl=r.readUInt8(e+14),n}function readPages(r,e,n){for(var a=[],t=readNameNT(r,e),d=t.length+1,o=n/d,i=0;i<o;i++)a[i]=r.slice(e,e+t.length).toString("utf8"),e+=d;return a}function readChars(r,e,n){for(var a=[],t=n/20,d=0;d<t;d++){var o={},i=20*d;o.id=r.readUInt32LE(e+0+i),o.x=r.readUInt16LE(e+4+i),o.y=r.readUInt16LE(e+6+i),o.width=r.readUInt16LE(e+8+i),o.height=r.readUInt16LE(e+10+i),o.xoffset=r.readInt16LE(e+12+i),o.yoffset=r.readInt16LE(e+14+i),o.xadvance=r.readInt16LE(e+16+i),o.page=r.readUInt8(e+18+i),o.chnl=r.readUInt8(e+19+i),a[d]=o}return a}function readKernings(r,e,n){for(var a=[],t=n/10,d=0;d<t;d++){var o={},i=10*d;o.first=r.readUInt32LE(e+0+i),o.second=r.readUInt32LE(e+4+i),o.amount=r.readInt16LE(e+8+i),a[d]=o}return a}function readNameNT(r,e){for(var n=e;n<r.length&&0!==r[n];n++);return r.slice(e,n)}function readStringNT(r,e){return readNameNT(r,e).toString("utf8")}var HEADER=[66,77,70];module.exports=function(r){if(r.length<6)throw new Error("invalid buffer length for BMFont");if(!HEADER.every(function(e,n){return r.readUInt8(n)===e}))throw new Error("BMFont missing BMF byte header");var e=3;if(r.readUInt8(e++)>3)throw new Error("Only supports BMFont Binary v3 (BMFont App v1.10)");for(var n={kernings:[],chars:[]},a=0;a<5;a++)e+=readBlock(n,r,e);return n};
},{}],45:[function(require,module,exports){
function getAttribs(e){return getAttribList(e).reduce(function(e,t){return e[mapName(t.nodeName)]=t.nodeValue,e},{})}function getAttribList(e){for(var t=[],r=0;r<e.attributes.length;r++)t.push(e.attributes[r]);return t}function mapName(e){return NAME_MAP[e.toLowerCase()]||e}var parseAttributes=require("./parse-attribs"),parseFromString=require("xml-parse-from-string"),NAME_MAP={scaleh:"scaleH",scalew:"scaleW",stretchh:"stretchH",lineheight:"lineHeight",alphachnl:"alphaChnl",redchnl:"redChnl",greenchnl:"greenChnl",bluechnl:"blueChnl"};module.exports=function(e){e=e.toString();var t=parseFromString(e),r={pages:[],chars:[],kernings:[]};["info","common"].forEach(function(e){var a=t.getElementsByTagName(e)[0];a&&(r[e]=parseAttributes(getAttribs(a)))});var a=t.getElementsByTagName("pages")[0];if(!a)throw new Error("malformed file -- no <pages> element");for(var n=a.getElementsByTagName("page"),i=0;i<n.length;i++){var s=n[i],g=parseInt(s.getAttribute("id"),10),l=s.getAttribute("file");if(isNaN(g))throw new Error('malformed file -- page "id" attribute is NaN');if(!l)throw new Error('malformed file -- needs page "file" attribute');r.pages[parseInt(g,10)]=l}return["chars","kernings"].forEach(function(e){var a=t.getElementsByTagName(e)[0];if(a)for(var n=e.substring(0,e.length-1),i=a.getElementsByTagName(n),s=0;s<i.length;s++){var g=i[s];r[e].push(parseAttributes(getAttribs(g)))}}),r};
},{"./parse-attribs":46,"xml-parse-from-string":72}],46:[function(require,module,exports){
function parseIntList(t){return t.split(",").map(function(t){return parseInt(t,10)})}var GLYPH_DESIGNER_ERROR="chasrset";module.exports=function(t){GLYPH_DESIGNER_ERROR in t&&(t.charset=t[GLYPH_DESIGNER_ERROR],delete t[GLYPH_DESIGNER_ERROR]);for(var n in t)"face"!==n&&"charset"!==n&&(t[n]="padding"===n||"spacing"===n?parseIntList(t[n]):parseInt(t[n],10));return t};
},{}],47:[function(require,module,exports){
var trim=require("string.prototype.trim"),forEach=require("for-each"),isArray=function(r){return"[object Array]"===Object.prototype.toString.call(r)};module.exports=function(r){if(!r)return{};var t={};return forEach(trim(r).split("\n"),function(r){var i=r.indexOf(":"),e=trim(r.slice(0,i)).toLowerCase(),o=trim(r.slice(i+1));void 0===t[e]?t[e]=o:isArray(t[e])?t[e].push(o):t[e]=[t[e],o]}),t};
},{"for-each":24,"string.prototype.trim":53}],48:[function(require,module,exports){
(function (global){
var performance=global.performance||{},present=function(){for(var e=["now","webkitNow","msNow","mozNow","oNow"];e.length;){var n=e.shift();if(n in performance)return performance[n].bind(performance)}var r=Date.now||function(){return(new Date).getTime()},o=(performance.timing||{}).navigationStart||r();return function(){return r()-o}}();present.performanceNow=performance.now,present.noConflict=function(){performance.now=present.performanceNow},present.conflict=function(){performance.now=present},present.conflict(),module.exports=present;
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})

},{}],49:[function(require,module,exports){
function defaultSetTimout(){throw new Error("setTimeout has not been defined")}function defaultClearTimeout(){throw new Error("clearTimeout has not been defined")}function runTimeout(e){if(cachedSetTimeout===setTimeout)return setTimeout(e,0);if((cachedSetTimeout===defaultSetTimout||!cachedSetTimeout)&&setTimeout)return cachedSetTimeout=setTimeout,setTimeout(e,0);try{return cachedSetTimeout(e,0)}catch(t){try{return cachedSetTimeout.call(null,e,0)}catch(t){return cachedSetTimeout.call(this,e,0)}}}function runClearTimeout(e){if(cachedClearTimeout===clearTimeout)return clearTimeout(e);if((cachedClearTimeout===defaultClearTimeout||!cachedClearTimeout)&&clearTimeout)return cachedClearTimeout=clearTimeout,clearTimeout(e);try{return cachedClearTimeout(e)}catch(t){try{return cachedClearTimeout.call(null,e)}catch(t){return cachedClearTimeout.call(this,e)}}}function cleanUpNextTick(){draining&&currentQueue&&(draining=!1,currentQueue.length?queue=currentQueue.concat(queue):queueIndex=-1,queue.length&&drainQueue())}function drainQueue(){if(!draining){var e=runTimeout(cleanUpNextTick);draining=!0;for(var t=queue.length;t;){for(currentQueue=queue,queue=[];++queueIndex<t;)currentQueue&&currentQueue[queueIndex].run();queueIndex=-1,t=queue.length}currentQueue=null,draining=!1,runClearTimeout(e)}}function Item(e,t){this.fun=e,this.array=t}function noop(){}var process=module.exports={},cachedSetTimeout,cachedClearTimeout;!function(){try{cachedSetTimeout="function"==typeof setTimeout?setTimeout:defaultSetTimout}catch(e){cachedSetTimeout=defaultSetTimout}try{cachedClearTimeout="function"==typeof clearTimeout?clearTimeout:defaultClearTimeout}catch(e){cachedClearTimeout=defaultClearTimeout}}();var queue=[],draining=!1,currentQueue,queueIndex=-1;process.nextTick=function(e){var t=new Array(arguments.length-1);if(arguments.length>1)for(var r=1;r<arguments.length;r++)t[r-1]=arguments[r];queue.push(new Item(e,t)),1!==queue.length||draining||runTimeout(drainQueue)},Item.prototype.run=function(){this.fun.apply(null,this.array)},process.title="browser",process.browser=!0,process.env={},process.argv=[],process.version="",process.versions={},process.on=noop,process.addListener=noop,process.once=noop,process.off=noop,process.removeListener=noop,process.removeAllListeners=noop,process.emit=noop,process.prependListener=noop,process.prependOnceListener=noop,process.listeners=function(e){return[]},process.binding=function(e){throw new Error("process.binding is not supported")},process.cwd=function(){return"/"},process.chdir=function(e){throw new Error("process.chdir is not supported")},process.umask=function(){return 0};
},{}],50:[function(require,module,exports){
(function (setImmediate){
!function(t){function e(t,e){return function(){t.apply(e,arguments)}}function n(t){if("object"!=typeof this)throw new TypeError("Promises must be constructed via new");if("function"!=typeof t)throw new TypeError("not a function");this._state=null,this._value=null,this._deferreds=[],f(t,e(r,this),e(i,this))}function o(t){var e=this;if(null===this._state)return void this._deferreds.push(t);l(function(){var n=e._state?t.onFulfilled:t.onRejected;if(null===n)return void(e._state?t.resolve:t.reject)(e._value);var o;try{o=n(e._value)}catch(e){return void t.reject(e)}t.resolve(o)})}function r(t){try{if(t===this)throw new TypeError("A promise cannot be resolved with itself.");if(t&&("object"==typeof t||"function"==typeof t)){var n=t.then;if("function"==typeof n)return void f(e(n,t),e(r,this),e(i,this))}this._state=!0,this._value=t,u.call(this)}catch(t){i.call(this,t)}}function i(t){this._state=!1,this._value=t,u.call(this)}function u(){for(var t=0,e=this._deferreds.length;t<e;t++)o.call(this,this._deferreds[t]);this._deferreds=null}function c(t,e,n,o){this.onFulfilled="function"==typeof t?t:null,this.onRejected="function"==typeof e?e:null,this.resolve=n,this.reject=o}function f(t,e,n){var o=!1;try{t(function(t){o||(o=!0,e(t))},function(t){o||(o=!0,n(t))})}catch(t){if(o)return;o=!0,n(t)}}var s=setTimeout,l="function"==typeof setImmediate&&setImmediate||function(t){s(t,1)},h=Array.isArray||function(t){return"[object Array]"===Object.prototype.toString.call(t)};n.prototype.catch=function(t){return this.then(null,t)},n.prototype.then=function(t,e){var r=this;return new n(function(n,i){o.call(r,new c(t,e,n,i))})},n.all=function(){var t=Array.prototype.slice.call(1===arguments.length&&h(arguments[0])?arguments[0]:arguments);return new n(function(e,n){function o(i,u){try{if(u&&("object"==typeof u||"function"==typeof u)){var c=u.then;if("function"==typeof c)return void c.call(u,function(t){o(i,t)},n)}t[i]=u,0==--r&&e(t)}catch(t){n(t)}}if(0===t.length)return e([]);for(var r=t.length,i=0;i<t.length;i++)o(i,t[i])})},n.resolve=function(t){return t&&"object"==typeof t&&t.constructor===n?t:new n(function(e){e(t)})},n.reject=function(t){return new n(function(e,n){n(t)})},n.race=function(t){return new n(function(e,n){for(var o=0,r=t.length;o<r;o++)t[o].then(e,n)})},n._setImmediateFn=function(t){l=t},"undefined"!=typeof module&&module.exports?module.exports=n:t.Promise||(t.Promise=n)}(this);
}).call(this,require("timers").setImmediate)

},{"timers":68}],51:[function(require,module,exports){
var dtype=require("dtype"),anArray=require("an-array"),isBuffer=require("is-buffer"),CW=[0,2,3],CCW=[2,1,3];module.exports=function(r,e){r&&(anArray(r)||isBuffer(r))||(e=r||{},r=null),e="number"==typeof e?{count:e}:e||{};for(var t="string"==typeof e.type?e.type:"uint16",u="number"==typeof e.count?e.count:1,n=e.start||0,a=!1!==e.clockwise?CW:CCW,f=a[0],o=a[1],y=a[2],i=6*u,p=r||new(dtype(t))(i),s=0,c=0;s<i;s+=6,c+=4){var C=s+n;p[C+0]=c+0,p[C+1]=c+1,p[C+2]=c+2,p[C+3]=c+f,p[C+4]=c+o,p[C+5]=c+y}return p};
},{"an-array":1,"dtype":13,"is-buffer":31}],52:[function(require,module,exports){
"use strict";var bind=require("function-bind"),ES=require("es-abstract/es5"),replace=bind.call(Function.call,String.prototype.replace),leftWhitespace=/^[\x09\x0A\x0B\x0C\x0D\x20\xA0\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\u2028\u2029\uFEFF]+/,rightWhitespace=/[\x09\x0A\x0B\x0C\x0D\x20\xA0\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\u2028\u2029\uFEFF]+$/;module.exports=function(){var u=ES.ToString(ES.CheckObjectCoercible(this));return replace(replace(u,leftWhitespace,""),rightWhitespace,"")};
},{"es-abstract/es5":15,"function-bind":26}],53:[function(require,module,exports){
"use strict";var bind=require("function-bind"),define=require("define-properties"),implementation=require("./implementation"),getPolyfill=require("./polyfill"),shim=require("./shim"),boundTrim=bind.call(Function.call,getPolyfill());define(boundTrim,{getPolyfill:getPolyfill,implementation:implementation,shim:shim}),module.exports=boundTrim;
},{"./implementation":52,"./polyfill":54,"./shim":55,"define-properties":11,"function-bind":26}],54:[function(require,module,exports){
"use strict";var implementation=require("./implementation"),zeroWidthSpace="​";module.exports=function(){return String.prototype.trim&&zeroWidthSpace.trim()===zeroWidthSpace?String.prototype.trim:implementation};
},{"./implementation":52}],55:[function(require,module,exports){
"use strict";var define=require("define-properties"),getPolyfill=require("./polyfill");module.exports=function(){var e=getPolyfill();return define(String.prototype,{trim:e},{trim:function(){return String.prototype.trim!==e}}),e};
},{"./polyfill":54,"define-properties":11}],56:[function(require,module,exports){
"use strict";function minMax(e,t,n){return Math.min(Math.max(e,t),n)}function stringContains(e,t){return e.indexOf(t)>-1}function applyArguments(e,t){return e.apply(null,t)}function parseEasingParameters(e){var t=easingFunctionRegex.exec(e);return t?t[1].split(",").map(function(e){return parseFloat(e)}):[]}function spring(e,t){function n(e){var n=t?t*e/1e3:e;return n=l<1?Math.exp(-n*l*c)*(f*Math.cos(g*n)+p*Math.sin(g*n)):(f+p*n)*Math.exp(-n*c),0===e||1===e?e:1-n}function r(){var t=cache.springs[e];if(t)return t;for(var r=0,a=0;;)if(r+=1/6,1===n(r)){if(++a>=16)break}else a=0;var i=r*(1/6)*1e3;return cache.springs[e]=i,i}var a=parseEasingParameters(e),i=minMax(is.und(a[0])?1:a[0],.1,100),s=minMax(is.und(a[1])?100:a[1],.1,100),o=minMax(is.und(a[2])?10:a[2],.1,100),u=minMax(is.und(a[3])?0:a[3],.1,100),c=Math.sqrt(s/i),l=o/(2*Math.sqrt(s*i)),g=l<1?c*Math.sqrt(1-l*l):0,f=1,p=l<1?(l*c-u)/g:-u+c;return t?n:r}function elastic(e,t){void 0===e&&(e=1),void 0===t&&(t=.5);var n=minMax(e,1,10),r=minMax(t,.1,2);return function(e){return 0===e||1===e?e:-n*Math.pow(2,10*(e-1))*Math.sin((e-1-r/(2*Math.PI)*Math.asin(1/n))*(2*Math.PI)/r)}}function steps(e){return void 0===e&&(e=10),function(t){return Math.round(t*e)*(1/e)}}function parseEasings(e,t){if(is.fnc(e))return e;var n=e.split("(")[0],r=penner[n],a=parseEasingParameters(e);switch(n){case"spring":return spring(e,t);case"cubicBezier":return applyArguments(bezier,a);case"steps":return applyArguments(steps,a);default:return is.fnc(r)?applyArguments(r,a):applyArguments(bezier,r)}}function selectString(e){try{return document.querySelectorAll(e)}catch(e){return}}function filterArray(e,t){for(var n=auxArrayFilter,r=e.length,a=arguments.length>=2?arguments[1]:void 0,i=0;i<r;i++)if(i in e){var s=e[i];t.call(a,s,i,e)&&n.push(s)}return auxArrayFilter=e,auxArrayFilter.length=0,n}function flattenArray(e,t){t||(t=[]);for(var n=0,r=e.length;n<r;n++){var a=e[n];Array.isArray(a)?flattenArray(a,t):t.push(a)}return t}function toArray(e){return is.arr(e)?e:(is.str(e)&&(e=selectString(e)||e),e instanceof NodeList||e instanceof HTMLCollection?[].slice.call(e):[e])}function arrayContains(e,t){return e.some(function(e){return e===t})}function cloneObject(e){var t={};for(var n in e)t[n]=e[n];return t}function replaceObjectProps(e,t){var n=cloneObject(e);for(var r in e)n[r]=t.hasOwnProperty(r)?t[r]:e[r];return n}function mergeObjects(e,t){var n=cloneObject(e);for(var r in t)n[r]=is.und(e[r])?t[r]:e[r];return n}function rgbToRgba(e){var t=rgbRegex.exec(e);return t?"rgba("+t[1]+",1)":e}function hexToRgba(e){var t=e.replace(hexToRgbaHexRegex,function(e,t,n,r){return t+t+n+n+r+r}),n=hexToRgbaRgbRegex.exec(t);return"rgba("+parseInt(n[1],16)+","+parseInt(n[2],16)+","+parseInt(n[3],16)+",1)"}function hslToRgba(e){function t(e,t,n){return n<0&&(n+=1),n>1&&(n-=1),n<1/6?e+6*(t-e)*n:n<.5?t:n<2/3?e+(t-e)*(2/3-n)*6:e}var n,r,a,i=hslToRgbaHsl1Regex.exec(e)||hslToRgbaHsl2Regex.exec(e),s=parseInt(i[1],10)/360,o=parseInt(i[2],10)/100,u=parseInt(i[3],10)/100,c=i[4]||1;if(0==o)n=r=a=u;else{var l=u<.5?u*(1+o):u+o-u*o,g=2*u-l;n=t(g,l,s+1/3),r=t(g,l,s),a=t(g,l,s-1/3)}return"rgba("+255*n+","+255*r+","+255*a+","+c+")"}function colorToRgb(e){return is.rgb(e)?rgbToRgba(e):is.hex(e)?hexToRgba(e):is.hsl(e)?hslToRgba(e):void 0}function getUnit(e){var t=unitRegex.exec(e);if(t)return t[2]}function getTransformUnit(e){return stringContains(e,"translate")||"perspective"===e?"px":stringContains(e,"rotate")||stringContains(e,"skew")?"deg":void 0}function getFunctionValue(e,t){return is.fnc(e)?e(t.target,t.id,t.total):e}function getAttribute(e,t){return e.getAttribute(t)}function convertPxToUnit(e,t,n){if(arrayContains([n,"deg","rad","turn"],getUnit(t)))return t;var r=cache.CSS[t+n];if(!is.und(r))return r;var a=document.createElement(e.tagName),i=e.parentNode&&e.parentNode!==document?e.parentNode:document.body;i.appendChild(a),a.style.position="absolute",a.style.width=100+n;var s=100/a.offsetWidth;i.removeChild(a);var o=s*parseFloat(t);return cache.CSS[t+n]=o,o}function getCSSValue(e,t,n){if(t in e.style){var r=t.replace(/([a-z])([A-Z])/g,"$1-$2").toLowerCase(),a=e.style[t]||getComputedStyle(e).getPropertyValue(r)||"0";return n?convertPxToUnit(e,a,n):a}}function getAnimationType(e,t){return is.dom(e)&&!is.inp(e)&&(getAttribute(e,t)||is.svg(e)&&e[t])?"attribute":is.dom(e)&&arrayContains(validTransforms,t)?"transform":is.dom(e)&&"transform"!==t&&getCSSValue(e,t)?"css":null!=e[t]?"object":void 0}function getElementTransforms(e){if(is.dom(e)){for(var t,n=e.style.transform||"",r=new Map;t=transformRegex.exec(n);)r.set(t[1],t[2]);return r}}function getTransformValue(e,t,n,r){var a=stringContains(t,"scale")?1:0+getTransformUnit(t),i=getElementTransforms(e).get(t)||a;return n&&(n.transforms.list.set(t,i),n.transforms.last=t),r?convertPxToUnit(e,i,r):i}function getOriginalTargetValue(e,t,n,r){switch(getAnimationType(e,t)){case"transform":return getTransformValue(e,t,r,n);case"css":return getCSSValue(e,t,n);case"attribute":return getAttribute(e,t);default:return e[t]||0}}function getRelativeValue(e,t){var n=operatorRegex.exec(e);if(!n)return e;var r=getUnit(e)||0,a=parseFloat(t),i=parseFloat(e.replace(n[0],""));switch(n[0][0]){case"+":return a+i+r;case"-":return a-i+r;case"*":return a*i+r}}function validateValue(e,t){if(is.col(e))return colorToRgb(e);var n=getUnit(e),r=n?e.substr(0,e.length-n.length):e;return t&&!whitespaceRegex.test(e)?r+t:r}function getDistance(e,t){return Math.sqrt(Math.pow(t.x-e.x,2)+Math.pow(t.y-e.y,2))}function getCircleLength(e){return 2*Math.PI*getAttribute(e,"r")}function getRectLength(e){return 2*getAttribute(e,"width")+2*getAttribute(e,"height")}function getLineLength(e){return getDistance({x:getAttribute(e,"x1"),y:getAttribute(e,"y1")},{x:getAttribute(e,"x2"),y:getAttribute(e,"y2")})}function getPolylineLength(e){for(var t,n=e.points,r=0,a=0;a<n.numberOfItems;a++){var i=n.getItem(a);a>0&&(r+=getDistance(t,i)),t=i}return r}function getPolygonLength(e){var t=e.points;return getPolylineLength(e)+getDistance(t.getItem(t.numberOfItems-1),t.getItem(0))}function getTotalLength(e){if(e.getTotalLength)return e.getTotalLength();switch(e.tagName.toLowerCase()){case"circle":return getCircleLength(e);case"rect":return getRectLength(e);case"line":return getLineLength(e);case"polyline":return getPolylineLength(e);case"polygon":return getPolygonLength(e)}}function setDashoffset(e){var t=getTotalLength(e);return e.setAttribute("stroke-dasharray",t),t}function getParentSvgEl(e){for(var t=e.parentNode;is.svg(t)&&(t=t.parentNode,is.svg(t.parentNode)););return t}function getParentSvg(e,t){var n=t||{},r=n.el||getParentSvgEl(e),a=r.getBoundingClientRect(),i=getAttribute(r,"viewBox"),s=a.width,o=a.height,u=n.viewBox||(i?i.split(" "):[0,0,s,o]);return{el:r,viewBox:u,x:u[0]/1,y:u[1]/1,w:s/u[2],h:o/u[3]}}function getPath(e,t){var n=is.str(e)?selectString(e)[0]:e,r=t||100;return function(e){return{property:e,el:n,svg:getParentSvg(n),totalLength:getTotalLength(n)*(r/100)}}}function getPathProgress(e,t){function n(n){void 0===n&&(n=0);var r=t+n>=1?t+n:0;return e.el.getPointAtLength(r)}var r=getParentSvg(e.el,e.svg),a=n(),i=n(-1),s=n(1);switch(e.property){case"x":return(a.x-r.x)*r.w;case"y":return(a.y-r.y)*r.h;case"angle":return 180*Math.atan2(s.y-i.y,s.x-i.x)/Math.PI}}function decomposeValue(e,t){var n=validateValue(is.pth(e)?e.totalLength:e,t)+"";return{original:n,numbers:n.match(valueRegex)?n.match(valueRegex).map(Number):[0],strings:is.str(e)||t?n.split(valueRegex):[]}}function parseTargets(e){return filterArray(e?flattenArray(is.arr(e)?e.map(toArray):toArray(e)):[],function(e,t,n){return n.indexOf(e)===t})}function getAnimatables(e){var t=parseTargets(e);return t.map(function(e,n){return{target:e,id:n,total:t.length,transforms:{list:getElementTransforms(e)}}})}function normalizePropertyTweens(e,t){var n=cloneObject(t);if(springRegex.test(n.easing)&&(n.duration=spring(n.easing)),is.arr(e)){var r=e.length;2===r&&!is.obj(e[0])?e={value:e}:is.fnc(t.duration)||(n.duration=t.duration/r)}var a=is.arr(e)?e:[e];return a.map(function(e,n){var r=is.obj(e)&&!is.pth(e)?e:{value:e};return is.und(r.delay)&&(r.delay=n?0:t.delay),is.und(r.endDelay)&&(r.endDelay=n===a.length-1?t.endDelay:0),r}).map(function(e){return mergeObjects(e,n)})}function flattenKeyframes(e){for(var t=filterArray(flattenArray(e.map(function(e){return Object.keys(e)})),function(e){return is.key(e)}).reduce(function(e,t){return e.indexOf(t)<0&&e.push(t),e},[]),n={},r=0;r<t.length;r++)!function(r){var a=t[r];n[a]=e.map(function(e){var t={};for(var n in e)is.key(n)?n==a&&(t.value=e[n]):t[n]=e[n];return t})}(r);return n}function getProperties(e,t){var n=[],r=t.keyframes;r&&(t=mergeObjects(flattenKeyframes(r),t));for(var a in t)is.key(a)&&n.push({name:a,tweens:normalizePropertyTweens(t[a],e)});return n}function normalizeTweenValues(e,t){var n={};for(var r in e){var a=getFunctionValue(e[r],t);is.arr(a)&&(a=a.map(function(e){return getFunctionValue(e,t)}),1===a.length&&(a=a[0])),n[r]=a}return n.duration=parseFloat(n.duration),n.delay=parseFloat(n.delay),n}function normalizeTweens(e,t){var n;return e.tweens.map(function(r){var a=normalizeTweenValues(r,t),i=a.value,s=is.arr(i)?i[1]:i,o=getUnit(s),u=getOriginalTargetValue(t.target,e.name,o,t),c=n?n.to.original:u,l=is.arr(i)?i[0]:c,g=getUnit(l)||getUnit(u),f=o||g;return is.und(s)&&(s=c),a.from=decomposeValue(l,f),a.to=decomposeValue(getRelativeValue(s,l),f),a.start=n?n.end:0,a.end=a.start+a.delay+a.duration+a.endDelay,a.easing=parseEasings(a.easing,a.duration),a.isPath=is.pth(i),a.isColor=is.col(a.from.original),a.isColor&&(a.round=1),n=a,a})}function setTargetsValue(e,t){for(var n=getAnimatables(e),r=0,a=n.length;r<a;r++){var i=n[r];for(var s in t){var o=getFunctionValue(t[s],i),u=i.target,c=getUnit(o),l=getOriginalTargetValue(u,s,c,i),g=c||getUnit(l),f=getRelativeValue(validateValue(o,g),l),p=getAnimationType(u,s);setProgressValue[p](u,s,f,i.transforms,!0)}}}function createAnimation(e,t){var n=getAnimationType(e.target,t.name);if(n){var r=normalizeTweens(t,e),a=r[r.length-1];return{type:n,property:t.name,animatable:e,tweens:r,duration:a.end,delay:r[0].delay,endDelay:a.endDelay}}}function getAnimations(e,t){return filterArray(flattenArray(e.map(function(e){return t.map(function(t){return createAnimation(e,t)})})),function(e){return!is.und(e)})}function getInstanceTimings(e,t){var n=e.length,r=function(e){return e.timelineOffset?e.timelineOffset:0},a={};return a.duration=n?Math.max.apply(Math,e.map(function(e){return r(e)+e.duration})):t.duration,a.delay=n?Math.min.apply(Math,e.map(function(e){return r(e)+e.delay})):t.delay,a.endDelay=n?a.duration-Math.max.apply(Math,e.map(function(e){return r(e)+e.duration-e.endDelay})):t.endDelay,a}function createNewInstance(e){var t=replaceObjectProps(defaultInstanceSettings,e),n=replaceObjectProps(defaultTweenSettings,e),r=getProperties(n,e),a=getAnimatables(e.targets),i=getAnimations(a,r),s=getInstanceTimings(i,n),o=instanceID;return instanceID++,mergeObjects(t,{id:o,children:[],animatables:a,animations:i,duration:s.duration,delay:s.delay,endDelay:s.endDelay})}function handleVisibilityChange(){if(document.hidden){for(var e=0,t=activeInstances.length;e<t;e++)activeInstance[e].pause();pausedInstances=activeInstances.slice(0),activeInstances=[]}else for(var n=0,r=pausedInstances.length;n<r;n++)pausedInstances[n].play()}function anime(e){function t(){return window.Promise&&new Promise(function(e){return v=e})}function n(){y.reversed=!y.reversed;for(var e=0,t=g.length;e<t;e++)g[e].reversed=y.reversed}function r(e){return y.reversed?y.duration-e:e}function a(){f=0,p=r(y.currentTime)*(1/anime.speed)}function i(e,t){t&&t.seek(e-t.timelineOffset)}function s(e){if(y.reversePlayback)for(var t=d;t--;)i(e,g[t]);else for(var n=0;n<d;n++)i(e,g[n])}function o(e){for(var t=0,n=y.animations,r=n.length;t<r;){var a=n[t],i=a.animatable,s=a.tweens,o=s.length-1,u=s[o];o&&(u=filterArray(s,function(t){return e<t.end})[0]||u);for(var c=minMax(e-u.start-u.delay,0,u.duration)/u.duration,l=isNaN(c)?1:u.easing(c),g=u.to.strings,f=u.round,p=[],m=u.to.numbers.length,d=void 0,v=0;v<m;v++){var h=void 0,b=u.to.numbers[v],x=u.from.numbers[v]||0;h=u.isPath?getPathProgress(u.value,l*b):x+l*(b-x),f&&(u.isColor&&v>2||(h=Math.round(h*f)/f)),p.push(h)}var T=g.length;if(T){d=g[0];for(var A=0;A<T;A++){var R=(g[A],g[A+1]),P=p[A];isNaN(P)||(d+=R?P+R:P+" ")}}else d=p[0];setProgressValue[a.type](i.target,a.property,d,i.transforms),a.currentValue=d,t++}}function u(e){y[e]&&!y.passThrough&&y[e](y)}function c(){y.remaining&&!0!==y.remaining&&y.remaining--}function l(e){var a=y.duration,i=y.delay,l=a-y.endDelay,d=r(e);y.progress=minMax(d/a*100,0,100),y.reversePlayback=d<y.currentTime,g&&s(d),!y.began&&y.currentTime>0&&(y.began=!0,u("begin"),u("loopBegin")),d<=i&&0!==y.currentTime&&o(0),(d>=l&&y.currentTime!==a||!a)&&o(a),d>i&&d<l?(y.changeBegan||(y.changeBegan=!0,y.changeCompleted=!1,u("changeBegin")),u("change"),o(d)):y.changeBegan&&(y.changeCompleted=!0,y.changeBegan=!1,u("changeComplete")),y.currentTime=minMax(d,0,a),y.began&&u("update"),e>=a&&(p=0,c(),y.remaining?(f=m,u("loopComplete"),u("loopBegin"),"alternate"===y.direction&&n()):(y.paused=!0,y.completed||(y.completed=!0,u("loopComplete"),u("complete"),"Promise"in window&&(v(),h=t()))))}void 0===e&&(e={});var g,f=0,p=0,m=0,d=0,v=null,h=t(),y=createNewInstance(e);return y.reset=function(){var e=y.direction;y.passThrough=!1,y.currentTime=0,y.progress=0,y.paused=!0,y.began=!1,y.changeBegan=!1,y.completed=!1,y.changeCompleted=!1,y.reversePlayback=!1,y.reversed="reverse"===e,y.remaining=y.loop,g=y.children,d=g.length;for(var t=d;t--;)y.children[t].reset();(y.reversed&&!0!==y.loop||"alternate"===e&&1===y.loop)&&y.remaining++,o(0)},y.set=function(e,t){return setTargetsValue(e,t),y},y.tick=function(e){m=e,f||(f=m),l((m+(p-f))*anime.speed)},y.seek=function(e){l(r(e))},y.pause=function(){y.paused=!0,a()},y.play=function(){y.paused&&(y.paused=!1,activeInstances.push(y),a(),raf||engine())},y.reverse=function(){n(),a()},y.restart=function(){y.reset(),y.play()},y.finished=h,y.reset(),y.autoplay&&y.play(),y}function removeTargetsFromAnimations(e,t){for(var n=t.length;n--;)arrayContains(e,t[n].animatable.target)&&t.splice(n,1)}function removeTargets(e){for(var t=parseTargets(e),n=activeInstances.length;n--;){var r=activeInstances[n],a=r.animations,i=r.children;removeTargetsFromAnimations(t,a);for(var s=i.length;s--;){var o=i[s],u=o.animations;removeTargetsFromAnimations(t,u),u.length||o.children.length||i.splice(s,1)}a.length||i.length||r.pause()}}function stagger(e,t){void 0===t&&(t={});var n=t.direction||"normal",r=t.easing?parseEasings(t.easing):null,a=t.grid,i=t.axis,s=t.from||0,o="first"===s,u="center"===s,c="last"===s,l=is.arr(e),g=l?parseFloat(e[0]):parseFloat(e),f=l?parseFloat(e[1]):0,p=getUnit(l?e[1]:e)||0,m=t.start||0+(l?g:0),d=[],v=0;return function(e,t,h){if(o&&(s=0),u&&(s=(h-1)/2),c&&(s=h-1),!d.length){for(var y=0;y<h;y++){if(a){var b=u?(a[0]-1)/2:s%a[0],x=u?(a[1]-1)/2:Math.floor(s/a[0]),T=y%a[0],A=Math.floor(y/a[0]),R=b-T,P=x-A,w=Math.sqrt(R*R+P*P);"x"===i&&(w=-R),"y"===i&&(w=-P),d.push(w)}else d.push(Math.abs(s-y));v=Math.max.apply(Math,d)}r&&(d=d.map(function(e){return r(e/v)*v})),"reverse"===n&&(d=d.map(function(e){return i?e<0?-1*e:-e:Math.abs(v-e)}))}return m+(l?(f-g)/v:g)*(Math.round(100*d[t])/100)+p}}function timeline(e){void 0===e&&(e={});var t=anime(e);return t.duration=0,t.add=function(n,r){function a(e){e.passThrough=!0}var i=activeInstances.indexOf(t),s=t.children;i>-1&&activeInstances.splice(i,1);for(var o=0;o<s.length;o++)a(s[o]);var u=mergeObjects(n,replaceObjectProps(defaultTweenSettings,e));u.targets=u.targets||e.targets;var c=t.duration;u.autoplay=!1,u.direction=t.direction,u.timelineOffset=is.und(r)?c:getRelativeValue(r,c),a(t),t.seek(u.timelineOffset);var l=anime(u);a(l),s.push(l);var g=getInstanceTimings(s,e);return t.delay=g.delay,t.endDelay=g.endDelay,t.duration=g.duration,t.seek(0),t.reset(),t.autoplay&&t.play(),t},t}var defaultInstanceSettings={update:null,begin:null,loopBegin:null,changeBegin:null,change:null,changeComplete:null,loopComplete:null,complete:null,loop:1,direction:"normal",autoplay:!0,timelineOffset:0},defaultTweenSettings={duration:1e3,delay:0,endDelay:0,easing:"easeOutElastic(1, .5)",round:0},validTransforms=["translateX","translateY","translateZ","rotate","rotateX","rotateY","rotateZ","scale","scaleX","scaleY","scaleZ","skew","skewX","skewY","perspective"],cache={CSS:{},springs:{}},hexRegex=/(^#[0-9A-F]{6}$)|(^#[0-9A-F]{3}$)/i,rgbPrefixRegex=/^rgb/,hslRegex=/^hsl/,is={arr:function(e){return Array.isArray(e)},obj:function(e){return stringContains(Object.prototype.toString.call(e),"Object")},pth:function(e){return is.obj(e)&&e.hasOwnProperty("totalLength")},svg:function(e){return e instanceof SVGElement},inp:function(e){return e instanceof HTMLInputElement},dom:function(e){return e.nodeType||is.svg(e)},str:function(e){return"string"==typeof e},fnc:function(e){return"function"==typeof e},und:function(e){return void 0===e},hex:function(e){return hexRegex.test(e)},rgb:function(e){return rgbPrefixRegex.test(e)},hsl:function(e){return hslRegex.test(e)},col:function(e){return is.hex(e)||is.rgb(e)||is.hsl(e)},key:function(e){return!defaultInstanceSettings.hasOwnProperty(e)&&!defaultTweenSettings.hasOwnProperty(e)&&"targets"!==e&&"keyframes"!==e}},easingFunctionRegex=/\(([^)]+)\)/,bezier=function(){function e(e,t){return 1-3*t+3*e}function t(e,t){return 3*t-6*e}function n(e){return 3*e}function r(r,a,i){return((e(a,i)*r+t(a,i))*r+n(a))*r}function a(r,a,i){return 3*e(a,i)*r*r+2*t(a,i)*r+n(a)}function i(e,t,n,a,i){var s,o,u=0;do{o=t+(n-t)/2,s=r(o,a,i)-e,s>0?n=o:t=o}while(Math.abs(s)>1e-7&&++u<10);return o}function s(e,t,n,i){for(var s=0;s<4;++s){var o=a(t,n,i);if(0===o)return t;t-=(r(t,n,i)-e)/o}return t}function o(e,t,n,o){function l(t){for(var r=0,o=1,l=u-1;o!==l&&g[o]<=t;++o)r+=c;--o;var f=(t-g[o])/(g[o+1]-g[o]),p=r+f*c,m=a(p,e,n);return m>=.001?s(t,p,e,n):0===m?p:i(t,r,r+c,e,n)}if(0<=e&&e<=1&&0<=n&&n<=1){var g=new Float32Array(u);if(e!==t||n!==o)for(var f=0;f<u;++f)g[f]=r(f*c,e,n);return function(a){return e===t&&n===o?a:0===a||1===a?a:r(l(a),t,o)}}}var u=11,c=1/(u-1);return o}(),penner=function(){var e=["Quad","Cubic","Quart","Quint","Sine","Expo","Circ","Back","Elastic"],t={In:[[.55,.085,.68,.53],[.55,.055,.675,.19],[.895,.03,.685,.22],[.755,.05,.855,.06],[.47,0,.745,.715],[.95,.05,.795,.035],[.6,.04,.98,.335],[.6,-.28,.735,.045],elastic],Out:[[.25,.46,.45,.94],[.215,.61,.355,1],[.165,.84,.44,1],[.23,1,.32,1],[.39,.575,.565,1],[.19,1,.22,1],[.075,.82,.165,1],[.175,.885,.32,1.275],function(e,t){return function(n){return 1-elastic(e,t)(1-n)}}],InOut:[[.455,.03,.515,.955],[.645,.045,.355,1],[.77,0,.175,1],[.86,0,.07,1],[.445,.05,.55,.95],[1,0,0,1],[.785,.135,.15,.86],[.68,-.55,.265,1.55],function(e,t){return function(n){return n<.5?elastic(e,t)(2*n)/2:1-elastic(e,t)(-2*n+2)/2}}]},n={linear:[.25,.25,.75,.75]};for(var r in t)for(var a=0,i=t[r].length;a<i;a++)n["ease"+r+e[a]]=t[r][a];return n}(),auxArrayFilter=[],rgbRegex=/rgb\((\d+,\s*[\d]+,\s*[\d]+)\)/g,hexToRgbaHexRegex=/^#?([a-f\d])([a-f\d])([a-f\d])$/i,hexToRgbaRgbRegex=/^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i,hslToRgbaHsl1Regex=/hsl\((\d+),\s*([\d.]+)%,\s*([\d.]+)%\)/g,hslToRgbaHsl2Regex=/hsla\((\d+),\s*([\d.]+)%,\s*([\d.]+)%,\s*([\d.]+)\)/g,unitRegex=/([\+\-]?[0-9#\.]+)(%|px|pt|em|rem|in|cm|mm|ex|ch|pc|vw|vh|vmin|vmax|deg|rad|turn)?$/,transformRegex=/(\w+)\(([^)]*)\)/g,operatorRegex=/^(\*=|\+=|-=)/,whitespaceRegex=/\s/g,valueRegex=/-?\d*\.?\d+/g,springRegex=/^spring/,setProgressValue={css:function(e,t,n){return e.style[t]=n},attribute:function(e,t,n){return e.setAttribute(t,n)},object:function(e,t,n){return e[t]=n},transform:function(e,t,n,r,a){if(r.list.set(t,n),t===r.last||a){var i="";r.list.forEach(function(e,t){i+=t+"("+e+") "}),e.style.transform=i}}},instanceID=0,activeInstances=[],pausedInstances=[],raf,engine=function(){function e(){raf=requestAnimationFrame(t)}function t(t){var n=activeInstances.length;if(n){for(var r=0;r<n;){var a=activeInstances[r];if(a.paused){var i=activeInstances.indexOf(a);i>-1&&(activeInstances.splice(i,1),n=activeInstances.length)}else a.tick(t);r++}e()}else raf=cancelAnimationFrame(raf)}return e}();document.addEventListener("visibilitychange",handleVisibilityChange),anime.version="3.0.0",anime.speed=1,anime.running=activeInstances,anime.remove=removeTargets,anime.get=getOriginalTargetValue,anime.set=setTargetsValue,anime.convertPx=convertPxToUnit,anime.path=getPath,anime.setDashoffset=setDashoffset,anime.stagger=stagger,anime.timeline=timeline,anime.easing=parseEasings,anime.penner=penner,anime.random=function(e,t){return Math.floor(Math.random()*(t-e+1))+e},module.exports=anime;
},{}],57:[function(require,module,exports){
/**
 * @license
 * Copyright 2010-2021 Three.js Authors
 * SPDX-License-Identifier: MIT
 */
(function (global, factory) {
	typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
	typeof define === 'function' && define.amd ? define(['exports'], factory) :
	(global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.THREE = {}));
}(this, (function (exports) { 'use strict';

	const REVISION = '133';
	const MOUSE = {
		LEFT: 0,
		MIDDLE: 1,
		RIGHT: 2,
		ROTATE: 0,
		DOLLY: 1,
		PAN: 2
	};
	const TOUCH = {
		ROTATE: 0,
		PAN: 1,
		DOLLY_PAN: 2,
		DOLLY_ROTATE: 3
	};
	const CullFaceNone = 0;
	const CullFaceBack = 1;
	const CullFaceFront = 2;
	const CullFaceFrontBack = 3;
	const BasicShadowMap = 0;
	const PCFShadowMap = 1;
	const PCFSoftShadowMap = 2;
	const VSMShadowMap = 3;
	const FrontSide = 0;
	const BackSide = 1;
	const DoubleSide = 2;
	const FlatShading = 1;
	const SmoothShading = 2;
	const NoBlending = 0;
	const NormalBlending = 1;
	const AdditiveBlending = 2;
	const SubtractiveBlending = 3;
	const MultiplyBlending = 4;
	const CustomBlending = 5;
	const AddEquation = 100;
	const SubtractEquation = 101;
	const ReverseSubtractEquation = 102;
	const MinEquation = 103;
	const MaxEquation = 104;
	const ZeroFactor = 200;
	const OneFactor = 201;
	const SrcColorFactor = 202;
	const OneMinusSrcColorFactor = 203;
	const SrcAlphaFactor = 204;
	const OneMinusSrcAlphaFactor = 205;
	const DstAlphaFactor = 206;
	const OneMinusDstAlphaFactor = 207;
	const DstColorFactor = 208;
	const OneMinusDstColorFactor = 209;
	const SrcAlphaSaturateFactor = 210;
	const NeverDepth = 0;
	const AlwaysDepth = 1;
	const LessDepth = 2;
	const LessEqualDepth = 3;
	const EqualDepth = 4;
	const GreaterEqualDepth = 5;
	const GreaterDepth = 6;
	const NotEqualDepth = 7;
	const MultiplyOperation = 0;
	const MixOperation = 1;
	const AddOperation = 2;
	const NoToneMapping = 0;
	const LinearToneMapping = 1;
	const ReinhardToneMapping = 2;
	const CineonToneMapping = 3;
	const ACESFilmicToneMapping = 4;
	const CustomToneMapping = 5;
	const UVMapping = 300;
	const CubeReflectionMapping = 301;
	const CubeRefractionMapping = 302;
	const EquirectangularReflectionMapping = 303;
	const EquirectangularRefractionMapping = 304;
	const CubeUVReflectionMapping = 306;
	const CubeUVRefractionMapping = 307;
	const RepeatWrapping = 1000;
	const ClampToEdgeWrapping = 1001;
	const MirroredRepeatWrapping = 1002;
	const NearestFilter = 1003;
	const NearestMipmapNearestFilter = 1004;
	const NearestMipMapNearestFilter = 1004;
	const NearestMipmapLinearFilter = 1005;
	const NearestMipMapLinearFilter = 1005;
	const LinearFilter = 1006;
	const LinearMipmapNearestFilter = 1007;
	const LinearMipMapNearestFilter = 1007;
	const LinearMipmapLinearFilter = 1008;
	const LinearMipMapLinearFilter = 1008;
	const UnsignedByteType = 1009;
	const ByteType = 1010;
	const ShortType = 1011;
	const UnsignedShortType = 1012;
	const IntType = 1013;
	const UnsignedIntType = 1014;
	const FloatType = 1015;
	const HalfFloatType = 1016;
	const UnsignedShort4444Type = 1017;
	const UnsignedShort5551Type = 1018;
	const UnsignedShort565Type = 1019;
	const UnsignedInt248Type = 1020;
	const AlphaFormat = 1021;
	const RGBFormat = 1022;
	const RGBAFormat = 1023;
	const LuminanceFormat = 1024;
	const LuminanceAlphaFormat = 1025;
	const RGBEFormat = RGBAFormat;
	const DepthFormat = 1026;
	const DepthStencilFormat = 1027;
	const RedFormat = 1028;
	const RedIntegerFormat = 1029;
	const RGFormat = 1030;
	const RGIntegerFormat = 1031;
	const RGBIntegerFormat = 1032;
	const RGBAIntegerFormat = 1033;
	const RGB_S3TC_DXT1_Format = 33776;
	const RGBA_S3TC_DXT1_Format = 33777;
	const RGBA_S3TC_DXT3_Format = 33778;
	const RGBA_S3TC_DXT5_Format = 33779;
	const RGB_PVRTC_4BPPV1_Format = 35840;
	const RGB_PVRTC_2BPPV1_Format = 35841;
	const RGBA_PVRTC_4BPPV1_Format = 35842;
	const RGBA_PVRTC_2BPPV1_Format = 35843;
	const RGB_ETC1_Format = 36196;
	const RGB_ETC2_Format = 37492;
	const RGBA_ETC2_EAC_Format = 37496;
	const RGBA_ASTC_4x4_Format = 37808;
	const RGBA_ASTC_5x4_Format = 37809;
	const RGBA_ASTC_5x5_Format = 37810;
	const RGBA_ASTC_6x5_Format = 37811;
	const RGBA_ASTC_6x6_Format = 37812;
	const RGBA_ASTC_8x5_Format = 37813;
	const RGBA_ASTC_8x6_Format = 37814;
	const RGBA_ASTC_8x8_Format = 37815;
	const RGBA_ASTC_10x5_Format = 37816;
	const RGBA_ASTC_10x6_Format = 37817;
	const RGBA_ASTC_10x8_Format = 37818;
	const RGBA_ASTC_10x10_Format = 37819;
	const RGBA_ASTC_12x10_Format = 37820;
	const RGBA_ASTC_12x12_Format = 37821;
	const RGBA_BPTC_Format = 36492;
	const SRGB8_ALPHA8_ASTC_4x4_Format = 37840;
	const SRGB8_ALPHA8_ASTC_5x4_Format = 37841;
	const SRGB8_ALPHA8_ASTC_5x5_Format = 37842;
	const SRGB8_ALPHA8_ASTC_6x5_Format = 37843;
	const SRGB8_ALPHA8_ASTC_6x6_Format = 37844;
	const SRGB8_ALPHA8_ASTC_8x5_Format = 37845;
	const SRGB8_ALPHA8_ASTC_8x6_Format = 37846;
	const SRGB8_ALPHA8_ASTC_8x8_Format = 37847;
	const SRGB8_ALPHA8_ASTC_10x5_Format = 37848;
	const SRGB8_ALPHA8_ASTC_10x6_Format = 37849;
	const SRGB8_ALPHA8_ASTC_10x8_Format = 37850;
	const SRGB8_ALPHA8_ASTC_10x10_Format = 37851;
	const SRGB8_ALPHA8_ASTC_12x10_Format = 37852;
	const SRGB8_ALPHA8_ASTC_12x12_Format = 37853;
	const LoopOnce = 2200;
	const LoopRepeat = 2201;
	const LoopPingPong = 2202;
	const InterpolateDiscrete = 2300;
	const InterpolateLinear = 2301;
	const InterpolateSmooth = 2302;
	const ZeroCurvatureEnding = 2400;
	const ZeroSlopeEnding = 2401;
	const WrapAroundEnding = 2402;
	const NormalAnimationBlendMode = 2500;
	const AdditiveAnimationBlendMode = 2501;
	const TrianglesDrawMode = 0;
	const TriangleStripDrawMode = 1;
	const TriangleFanDrawMode = 2;
	const LinearEncoding = 3000;
	const sRGBEncoding = 3001;
	const GammaEncoding = 3007;
	const RGBEEncoding = 3002;
	const LogLuvEncoding = 3003;
	const RGBM7Encoding = 3004;
	const RGBM16Encoding = 3005;
	const RGBDEncoding = 3006;
	const BasicDepthPacking = 3200;
	const RGBADepthPacking = 3201;
	const TangentSpaceNormalMap = 0;
	const ObjectSpaceNormalMap = 1;
	const ZeroStencilOp = 0;
	const KeepStencilOp = 7680;
	const ReplaceStencilOp = 7681;
	const IncrementStencilOp = 7682;
	const DecrementStencilOp = 7683;
	const IncrementWrapStencilOp = 34055;
	const DecrementWrapStencilOp = 34056;
	const InvertStencilOp = 5386;
	const NeverStencilFunc = 512;
	const LessStencilFunc = 513;
	const EqualStencilFunc = 514;
	const LessEqualStencilFunc = 515;
	const GreaterStencilFunc = 516;
	const NotEqualStencilFunc = 517;
	const GreaterEqualStencilFunc = 518;
	const AlwaysStencilFunc = 519;
	const StaticDrawUsage = 35044;
	const DynamicDrawUsage = 35048;
	const StreamDrawUsage = 35040;
	const StaticReadUsage = 35045;
	const DynamicReadUsage = 35049;
	const StreamReadUsage = 35041;
	const StaticCopyUsage = 35046;
	const DynamicCopyUsage = 35050;
	const StreamCopyUsage = 35042;
	const GLSL1 = '100';
	const GLSL3 = '300 es';

	/**
	 * https://github.com/mrdoob/eventdispatcher.js/
	 */
	class EventDispatcher {
		addEventListener(type, listener) {
			if (this._listeners === undefined) this._listeners = {};
			const listeners = this._listeners;

			if (listeners[type] === undefined) {
				listeners[type] = [];
			}

			if (listeners[type].indexOf(listener) === -1) {
				listeners[type].push(listener);
			}
		}

		hasEventListener(type, listener) {
			if (this._listeners === undefined) return false;
			const listeners = this._listeners;
			return listeners[type] !== undefined && listeners[type].indexOf(listener) !== -1;
		}

		removeEventListener(type, listener) {
			if (this._listeners === undefined) return;
			const listeners = this._listeners;
			const listenerArray = listeners[type];

			if (listenerArray !== undefined) {
				const index = listenerArray.indexOf(listener);

				if (index !== -1) {
					listenerArray.splice(index, 1);
				}
			}
		}

		dispatchEvent(event) {
			if (this._listeners === undefined) return;
			const listeners = this._listeners;
			const listenerArray = listeners[event.type];

			if (listenerArray !== undefined) {
				event.target = this; // Make a copy, in case listeners are removed while iterating.

				const array = listenerArray.slice(0);

				for (let i = 0, l = array.length; i < l; i++) {
					array[i].call(this, event);
				}

				event.target = null;
			}
		}

	}

	let _seed = 1234567;
	const DEG2RAD = Math.PI / 180;
	const RAD2DEG = 180 / Math.PI; //

	const _lut = [];

	for (let i = 0; i < 256; i++) {
		_lut[i] = (i < 16 ? '0' : '') + i.toString(16);
	}

	const hasRandomUUID = typeof crypto !== 'undefined' && 'randomUUID' in crypto;

	function generateUUID() {
		if (hasRandomUUID) {
			return crypto.randomUUID().toUpperCase();
		} // TODO Remove this code when crypto.randomUUID() is available everywhere
		// http://stackoverflow.com/questions/105034/how-to-create-a-guid-uuid-in-javascript/21963136#21963136


		const d0 = Math.random() * 0xffffffff | 0;
		const d1 = Math.random() * 0xffffffff | 0;
		const d2 = Math.random() * 0xffffffff | 0;
		const d3 = Math.random() * 0xffffffff | 0;
		const uuid = _lut[d0 & 0xff] + _lut[d0 >> 8 & 0xff] + _lut[d0 >> 16 & 0xff] + _lut[d0 >> 24 & 0xff] + '-' + _lut[d1 & 0xff] + _lut[d1 >> 8 & 0xff] + '-' + _lut[d1 >> 16 & 0x0f | 0x40] + _lut[d1 >> 24 & 0xff] + '-' + _lut[d2 & 0x3f | 0x80] + _lut[d2 >> 8 & 0xff] + '-' + _lut[d2 >> 16 & 0xff] + _lut[d2 >> 24 & 0xff] + _lut[d3 & 0xff] + _lut[d3 >> 8 & 0xff] + _lut[d3 >> 16 & 0xff] + _lut[d3 >> 24 & 0xff]; // .toUpperCase() here flattens concatenated strings to save heap memory space.

		return uuid.toUpperCase();
	}

	function clamp(value, min, max) {
		return Math.max(min, Math.min(max, value));
	} // compute euclidian modulo of m % n
	// https://en.wikipedia.org/wiki/Modulo_operation


	function euclideanModulo(n, m) {
		return (n % m + m) % m;
	} // Linear mapping from range <a1, a2> to range <b1, b2>


	function mapLinear(x, a1, a2, b1, b2) {
		return b1 + (x - a1) * (b2 - b1) / (a2 - a1);
	} // https://www.gamedev.net/tutorials/programming/general-and-gameplay-programming/inverse-lerp-a-super-useful-yet-often-overlooked-function-r5230/


	function inverseLerp(x, y, value) {
		if (x !== y) {
			return (value - x) / (y - x);
		} else {
			return 0;
		}
	} // https://en.wikipedia.org/wiki/Linear_interpolation


	function lerp(x, y, t) {
		return (1 - t) * x + t * y;
	} // http://www.rorydriscoll.com/2016/03/07/frame-rate-independent-damping-using-lerp/


	function damp(x, y, lambda, dt) {
		return lerp(x, y, 1 - Math.exp(-lambda * dt));
	} // https://www.desmos.com/calculator/vcsjnyz7x4


	function pingpong(x, length = 1) {
		return length - Math.abs(euclideanModulo(x, length * 2) - length);
	} // http://en.wikipedia.org/wiki/Smoothstep


	function smoothstep(x, min, max) {
		if (x <= min) return 0;
		if (x >= max) return 1;
		x = (x - min) / (max - min);
		return x * x * (3 - 2 * x);
	}

	function smootherstep(x, min, max) {
		if (x <= min) return 0;
		if (x >= max) return 1;
		x = (x - min) / (max - min);
		return x * x * x * (x * (x * 6 - 15) + 10);
	} // Random integer from <low, high> interval


	function randInt(low, high) {
		return low + Math.floor(Math.random() * (high - low + 1));
	} // Random float from <low, high> interval


	function randFloat(low, high) {
		return low + Math.random() * (high - low);
	} // Random float from <-range/2, range/2> interval


	function randFloatSpread(range) {
		return range * (0.5 - Math.random());
	} // Deterministic pseudo-random float in the interval [ 0, 1 ]


	function seededRandom(s) {
		if (s !== undefined) _seed = s % 2147483647; // Park-Miller algorithm

		_seed = _seed * 16807 % 2147483647;
		return (_seed - 1) / 2147483646;
	}

	function degToRad(degrees) {
		return degrees * DEG2RAD;
	}

	function radToDeg(radians) {
		return radians * RAD2DEG;
	}

	function isPowerOfTwo(value) {
		return (value & value - 1) === 0 && value !== 0;
	}

	function ceilPowerOfTwo(value) {
		return Math.pow(2, Math.ceil(Math.log(value) / Math.LN2));
	}

	function floorPowerOfTwo(value) {
		return Math.pow(2, Math.floor(Math.log(value) / Math.LN2));
	}

	function setQuaternionFromProperEuler(q, a, b, c, order) {
		// Intrinsic Proper Euler Angles - see https://en.wikipedia.org/wiki/Euler_angles
		// rotations are applied to the axes in the order specified by 'order'
		// rotation by angle 'a' is applied first, then by angle 'b', then by angle 'c'
		// angles are in radians
		const cos = Math.cos;
		const sin = Math.sin;
		const c2 = cos(b / 2);
		const s2 = sin(b / 2);
		const c13 = cos((a + c) / 2);
		const s13 = sin((a + c) / 2);
		const c1_3 = cos((a - c) / 2);
		const s1_3 = sin((a - c) / 2);
		const c3_1 = cos((c - a) / 2);
		const s3_1 = sin((c - a) / 2);

		switch (order) {
			case 'XYX':
				q.set(c2 * s13, s2 * c1_3, s2 * s1_3, c2 * c13);
				break;

			case 'YZY':
				q.set(s2 * s1_3, c2 * s13, s2 * c1_3, c2 * c13);
				break;

			case 'ZXZ':
				q.set(s2 * c1_3, s2 * s1_3, c2 * s13, c2 * c13);
				break;

			case 'XZX':
				q.set(c2 * s13, s2 * s3_1, s2 * c3_1, c2 * c13);
				break;

			case 'YXY':
				q.set(s2 * c3_1, c2 * s13, s2 * s3_1, c2 * c13);
				break;

			case 'ZYZ':
				q.set(s2 * s3_1, s2 * c3_1, c2 * s13, c2 * c13);
				break;

			default:
				console.warn('THREE.MathUtils: .setQuaternionFromProperEuler() encountered an unknown order: ' + order);
		}
	}

	var MathUtils = /*#__PURE__*/Object.freeze({
		__proto__: null,
		DEG2RAD: DEG2RAD,
		RAD2DEG: RAD2DEG,
		generateUUID: generateUUID,
		clamp: clamp,
		euclideanModulo: euclideanModulo,
		mapLinear: mapLinear,
		inverseLerp: inverseLerp,
		lerp: lerp,
		damp: damp,
		pingpong: pingpong,
		smoothstep: smoothstep,
		smootherstep: smootherstep,
		randInt: randInt,
		randFloat: randFloat,
		randFloatSpread: randFloatSpread,
		seededRandom: seededRandom,
		degToRad: degToRad,
		radToDeg: radToDeg,
		isPowerOfTwo: isPowerOfTwo,
		ceilPowerOfTwo: ceilPowerOfTwo,
		floorPowerOfTwo: floorPowerOfTwo,
		setQuaternionFromProperEuler: setQuaternionFromProperEuler
	});

	class Vector2 {
		constructor(x = 0, y = 0) {
			this.x = x;
			this.y = y;
		}

		get width() {
			return this.x;
		}

		set width(value) {
			this.x = value;
		}

		get height() {
			return this.y;
		}

		set height(value) {
			this.y = value;
		}

		set(x, y) {
			this.x = x;
			this.y = y;
			return this;
		}

		setScalar(scalar) {
			this.x = scalar;
			this.y = scalar;
			return this;
		}

		setX(x) {
			this.x = x;
			return this;
		}

		setY(y) {
			this.y = y;
			return this;
		}

		setComponent(index, value) {
			switch (index) {
				case 0:
					this.x = value;
					break;

				case 1:
					this.y = value;
					break;

				default:
					throw new Error('index is out of range: ' + index);
			}

			return this;
		}

		getComponent(index) {
			switch (index) {
				case 0:
					return this.x;

				case 1:
					return this.y;

				default:
					throw new Error('index is out of range: ' + index);
			}
		}

		clone() {
			return new this.constructor(this.x, this.y);
		}

		copy(v) {
			this.x = v.x;
			this.y = v.y;
			return this;
		}

		add(v, w) {
			if (w !== undefined) {
				console.warn('THREE.Vector2: .add() now only accepts one argument. Use .addVectors( a, b ) instead.');
				return this.addVectors(v, w);
			}

			this.x += v.x;
			this.y += v.y;
			return this;
		}

		addScalar(s) {
			this.x += s;
			this.y += s;
			return this;
		}

		addVectors(a, b) {
			this.x = a.x + b.x;
			this.y = a.y + b.y;
			return this;
		}

		addScaledVector(v, s) {
			this.x += v.x * s;
			this.y += v.y * s;
			return this;
		}

		sub(v, w) {
			if (w !== undefined) {
				console.warn('THREE.Vector2: .sub() now only accepts one argument. Use .subVectors( a, b ) instead.');
				return this.subVectors(v, w);
			}

			this.x -= v.x;
			this.y -= v.y;
			return this;
		}

		subScalar(s) {
			this.x -= s;
			this.y -= s;
			return this;
		}

		subVectors(a, b) {
			this.x = a.x - b.x;
			this.y = a.y - b.y;
			return this;
		}

		multiply(v) {
			this.x *= v.x;
			this.y *= v.y;
			return this;
		}

		multiplyScalar(scalar) {
			this.x *= scalar;
			this.y *= scalar;
			return this;
		}

		divide(v) {
			this.x /= v.x;
			this.y /= v.y;
			return this;
		}

		divideScalar(scalar) {
			return this.multiplyScalar(1 / scalar);
		}

		applyMatrix3(m) {
			const x = this.x,
						y = this.y;
			const e = m.elements;
			this.x = e[0] * x + e[3] * y + e[6];
			this.y = e[1] * x + e[4] * y + e[7];
			return this;
		}

		min(v) {
			this.x = Math.min(this.x, v.x);
			this.y = Math.min(this.y, v.y);
			return this;
		}

		max(v) {
			this.x = Math.max(this.x, v.x);
			this.y = Math.max(this.y, v.y);
			return this;
		}

		clamp(min, max) {
			// assumes min < max, componentwise
			this.x = Math.max(min.x, Math.min(max.x, this.x));
			this.y = Math.max(min.y, Math.min(max.y, this.y));
			return this;
		}

		clampScalar(minVal, maxVal) {
			this.x = Math.max(minVal, Math.min(maxVal, this.x));
			this.y = Math.max(minVal, Math.min(maxVal, this.y));
			return this;
		}

		clampLength(min, max) {
			const length = this.length();
			return this.divideScalar(length || 1).multiplyScalar(Math.max(min, Math.min(max, length)));
		}

		floor() {
			this.x = Math.floor(this.x);
			this.y = Math.floor(this.y);
			return this;
		}

		ceil() {
			this.x = Math.ceil(this.x);
			this.y = Math.ceil(this.y);
			return this;
		}

		round() {
			this.x = Math.round(this.x);
			this.y = Math.round(this.y);
			return this;
		}

		roundToZero() {
			this.x = this.x < 0 ? Math.ceil(this.x) : Math.floor(this.x);
			this.y = this.y < 0 ? Math.ceil(this.y) : Math.floor(this.y);
			return this;
		}

		negate() {
			this.x = -this.x;
			this.y = -this.y;
			return this;
		}

		dot(v) {
			return this.x * v.x + this.y * v.y;
		}

		cross(v) {
			return this.x * v.y - this.y * v.x;
		}

		lengthSq() {
			return this.x * this.x + this.y * this.y;
		}

		length() {
			return Math.sqrt(this.x * this.x + this.y * this.y);
		}

		manhattanLength() {
			return Math.abs(this.x) + Math.abs(this.y);
		}

		normalize() {
			return this.divideScalar(this.length() || 1);
		}

		angle() {
			// computes the angle in radians with respect to the positive x-axis
			const angle = Math.atan2(-this.y, -this.x) + Math.PI;
			return angle;
		}

		distanceTo(v) {
			return Math.sqrt(this.distanceToSquared(v));
		}

		distanceToSquared(v) {
			const dx = this.x - v.x,
						dy = this.y - v.y;
			return dx * dx + dy * dy;
		}

		manhattanDistanceTo(v) {
			return Math.abs(this.x - v.x) + Math.abs(this.y - v.y);
		}

		setLength(length) {
			return this.normalize().multiplyScalar(length);
		}

		lerp(v, alpha) {
			this.x += (v.x - this.x) * alpha;
			this.y += (v.y - this.y) * alpha;
			return this;
		}

		lerpVectors(v1, v2, alpha) {
			this.x = v1.x + (v2.x - v1.x) * alpha;
			this.y = v1.y + (v2.y - v1.y) * alpha;
			return this;
		}

		equals(v) {
			return v.x === this.x && v.y === this.y;
		}

		fromArray(array, offset = 0) {
			this.x = array[offset];
			this.y = array[offset + 1];
			return this;
		}

		toArray(array = [], offset = 0) {
			array[offset] = this.x;
			array[offset + 1] = this.y;
			return array;
		}

		fromBufferAttribute(attribute, index, offset) {
			if (offset !== undefined) {
				console.warn('THREE.Vector2: offset has been removed from .fromBufferAttribute().');
			}

			this.x = attribute.getX(index);
			this.y = attribute.getY(index);
			return this;
		}

		rotateAround(center, angle) {
			const c = Math.cos(angle),
						s = Math.sin(angle);
			const x = this.x - center.x;
			const y = this.y - center.y;
			this.x = x * c - y * s + center.x;
			this.y = x * s + y * c + center.y;
			return this;
		}

		random() {
			this.x = Math.random();
			this.y = Math.random();
			return this;
		}

		*[Symbol.iterator]() {
			yield this.x;
			yield this.y;
		}

	}

	Vector2.prototype.isVector2 = true;

	class Matrix3 {
		constructor() {
			this.elements = [1, 0, 0, 0, 1, 0, 0, 0, 1];

			if (arguments.length > 0) {
				console.error('THREE.Matrix3: the constructor no longer reads arguments. use .set() instead.');
			}
		}

		set(n11, n12, n13, n21, n22, n23, n31, n32, n33) {
			const te = this.elements;
			te[0] = n11;
			te[1] = n21;
			te[2] = n31;
			te[3] = n12;
			te[4] = n22;
			te[5] = n32;
			te[6] = n13;
			te[7] = n23;
			te[8] = n33;
			return this;
		}

		identity() {
			this.set(1, 0, 0, 0, 1, 0, 0, 0, 1);
			return this;
		}

		copy(m) {
			const te = this.elements;
			const me = m.elements;
			te[0] = me[0];
			te[1] = me[1];
			te[2] = me[2];
			te[3] = me[3];
			te[4] = me[4];
			te[5] = me[5];
			te[6] = me[6];
			te[7] = me[7];
			te[8] = me[8];
			return this;
		}

		extractBasis(xAxis, yAxis, zAxis) {
			xAxis.setFromMatrix3Column(this, 0);
			yAxis.setFromMatrix3Column(this, 1);
			zAxis.setFromMatrix3Column(this, 2);
			return this;
		}

		setFromMatrix4(m) {
			const me = m.elements;
			this.set(me[0], me[4], me[8], me[1], me[5], me[9], me[2], me[6], me[10]);
			return this;
		}

		multiply(m) {
			return this.multiplyMatrices(this, m);
		}

		premultiply(m) {
			return this.multiplyMatrices(m, this);
		}

		multiplyMatrices(a, b) {
			const ae = a.elements;
			const be = b.elements;
			const te = this.elements;
			const a11 = ae[0],
						a12 = ae[3],
						a13 = ae[6];
			const a21 = ae[1],
						a22 = ae[4],
						a23 = ae[7];
			const a31 = ae[2],
						a32 = ae[5],
						a33 = ae[8];
			const b11 = be[0],
						b12 = be[3],
						b13 = be[6];
			const b21 = be[1],
						b22 = be[4],
						b23 = be[7];
			const b31 = be[2],
						b32 = be[5],
						b33 = be[8];
			te[0] = a11 * b11 + a12 * b21 + a13 * b31;
			te[3] = a11 * b12 + a12 * b22 + a13 * b32;
			te[6] = a11 * b13 + a12 * b23 + a13 * b33;
			te[1] = a21 * b11 + a22 * b21 + a23 * b31;
			te[4] = a21 * b12 + a22 * b22 + a23 * b32;
			te[7] = a21 * b13 + a22 * b23 + a23 * b33;
			te[2] = a31 * b11 + a32 * b21 + a33 * b31;
			te[5] = a31 * b12 + a32 * b22 + a33 * b32;
			te[8] = a31 * b13 + a32 * b23 + a33 * b33;
			return this;
		}

		multiplyScalar(s) {
			const te = this.elements;
			te[0] *= s;
			te[3] *= s;
			te[6] *= s;
			te[1] *= s;
			te[4] *= s;
			te[7] *= s;
			te[2] *= s;
			te[5] *= s;
			te[8] *= s;
			return this;
		}

		determinant() {
			const te = this.elements;
			const a = te[0],
						b = te[1],
						c = te[2],
						d = te[3],
						e = te[4],
						f = te[5],
						g = te[6],
						h = te[7],
						i = te[8];
			return a * e * i - a * f * h - b * d * i + b * f * g + c * d * h - c * e * g;
		}

		invert() {
			const te = this.elements,
						n11 = te[0],
						n21 = te[1],
						n31 = te[2],
						n12 = te[3],
						n22 = te[4],
						n32 = te[5],
						n13 = te[6],
						n23 = te[7],
						n33 = te[8],
						t11 = n33 * n22 - n32 * n23,
						t12 = n32 * n13 - n33 * n12,
						t13 = n23 * n12 - n22 * n13,
						det = n11 * t11 + n21 * t12 + n31 * t13;
			if (det === 0) return this.set(0, 0, 0, 0, 0, 0, 0, 0, 0);
			const detInv = 1 / det;
			te[0] = t11 * detInv;
			te[1] = (n31 * n23 - n33 * n21) * detInv;
			te[2] = (n32 * n21 - n31 * n22) * detInv;
			te[3] = t12 * detInv;
			te[4] = (n33 * n11 - n31 * n13) * detInv;
			te[5] = (n31 * n12 - n32 * n11) * detInv;
			te[6] = t13 * detInv;
			te[7] = (n21 * n13 - n23 * n11) * detInv;
			te[8] = (n22 * n11 - n21 * n12) * detInv;
			return this;
		}

		transpose() {
			let tmp;
			const m = this.elements;
			tmp = m[1];
			m[1] = m[3];
			m[3] = tmp;
			tmp = m[2];
			m[2] = m[6];
			m[6] = tmp;
			tmp = m[5];
			m[5] = m[7];
			m[7] = tmp;
			return this;
		}

		getNormalMatrix(matrix4) {
			return this.setFromMatrix4(matrix4).invert().transpose();
		}

		transposeIntoArray(r) {
			const m = this.elements;
			r[0] = m[0];
			r[1] = m[3];
			r[2] = m[6];
			r[3] = m[1];
			r[4] = m[4];
			r[5] = m[7];
			r[6] = m[2];
			r[7] = m[5];
			r[8] = m[8];
			return this;
		}

		setUvTransform(tx, ty, sx, sy, rotation, cx, cy) {
			const c = Math.cos(rotation);
			const s = Math.sin(rotation);
			this.set(sx * c, sx * s, -sx * (c * cx + s * cy) + cx + tx, -sy * s, sy * c, -sy * (-s * cx + c * cy) + cy + ty, 0, 0, 1);
			return this;
		}

		scale(sx, sy) {
			const te = this.elements;
			te[0] *= sx;
			te[3] *= sx;
			te[6] *= sx;
			te[1] *= sy;
			te[4] *= sy;
			te[7] *= sy;
			return this;
		}

		rotate(theta) {
			const c = Math.cos(theta);
			const s = Math.sin(theta);
			const te = this.elements;
			const a11 = te[0],
						a12 = te[3],
						a13 = te[6];
			const a21 = te[1],
						a22 = te[4],
						a23 = te[7];
			te[0] = c * a11 + s * a21;
			te[3] = c * a12 + s * a22;
			te[6] = c * a13 + s * a23;
			te[1] = -s * a11 + c * a21;
			te[4] = -s * a12 + c * a22;
			te[7] = -s * a13 + c * a23;
			return this;
		}

		translate(tx, ty) {
			const te = this.elements;
			te[0] += tx * te[2];
			te[3] += tx * te[5];
			te[6] += tx * te[8];
			te[1] += ty * te[2];
			te[4] += ty * te[5];
			te[7] += ty * te[8];
			return this;
		}

		equals(matrix) {
			const te = this.elements;
			const me = matrix.elements;

			for (let i = 0; i < 9; i++) {
				if (te[i] !== me[i]) return false;
			}

			return true;
		}

		fromArray(array, offset = 0) {
			for (let i = 0; i < 9; i++) {
				this.elements[i] = array[i + offset];
			}

			return this;
		}

		toArray(array = [], offset = 0) {
			const te = this.elements;
			array[offset] = te[0];
			array[offset + 1] = te[1];
			array[offset + 2] = te[2];
			array[offset + 3] = te[3];
			array[offset + 4] = te[4];
			array[offset + 5] = te[5];
			array[offset + 6] = te[6];
			array[offset + 7] = te[7];
			array[offset + 8] = te[8];
			return array;
		}

		clone() {
			return new this.constructor().fromArray(this.elements);
		}

	}

	Matrix3.prototype.isMatrix3 = true;

	function arrayMax(array) {
		if (array.length === 0) return -Infinity;
		let max = array[0];

		for (let i = 1, l = array.length; i < l; ++i) {
			if (array[i] > max) max = array[i];
		}

		return max;
	}

	const TYPED_ARRAYS = {
		Int8Array: Int8Array,
		Uint8Array: Uint8Array,
		Uint8ClampedArray: Uint8ClampedArray,
		Int16Array: Int16Array,
		Uint16Array: Uint16Array,
		Int32Array: Int32Array,
		Uint32Array: Uint32Array,
		Float32Array: Float32Array,
		Float64Array: Float64Array
	};

	function getTypedArray(type, buffer) {
		return new TYPED_ARRAYS[type](buffer);
	}

	function createElementNS(name) {
		return document.createElementNS('http://www.w3.org/1999/xhtml', name);
	}

	let _canvas;

	class ImageUtils {
		static getDataURL(image) {
			if (/^data:/i.test(image.src)) {
				return image.src;
			}

			if (typeof HTMLCanvasElement == 'undefined') {
				return image.src;
			}

			let canvas;

			if (image instanceof HTMLCanvasElement) {
				canvas = image;
			} else {
				if (_canvas === undefined) _canvas = createElementNS('canvas');
				_canvas.width = image.width;
				_canvas.height = image.height;

				const context = _canvas.getContext('2d');

				if (image instanceof ImageData) {
					context.putImageData(image, 0, 0);
				} else {
					context.drawImage(image, 0, 0, image.width, image.height);
				}

				canvas = _canvas;
			}

			if (canvas.width > 2048 || canvas.height > 2048) {
				console.warn('THREE.ImageUtils.getDataURL: Image converted to jpg for performance reasons', image);
				return canvas.toDataURL('image/jpeg', 0.6);
			} else {
				return canvas.toDataURL('image/png');
			}
		}

	}

	let textureId = 0;

	class Texture extends EventDispatcher {
		constructor(image = Texture.DEFAULT_IMAGE, mapping = Texture.DEFAULT_MAPPING, wrapS = ClampToEdgeWrapping, wrapT = ClampToEdgeWrapping, magFilter = LinearFilter, minFilter = LinearMipmapLinearFilter, format = RGBAFormat, type = UnsignedByteType, anisotropy = 1, encoding = LinearEncoding) {
			super();
			Object.defineProperty(this, 'id', {
				value: textureId++
			});
			this.uuid = generateUUID();
			this.name = '';
			this.image = image;
			this.mipmaps = [];
			this.mapping = mapping;
			this.wrapS = wrapS;
			this.wrapT = wrapT;
			this.magFilter = magFilter;
			this.minFilter = minFilter;
			this.anisotropy = anisotropy;
			this.format = format;
			this.internalFormat = null;
			this.type = type;
			this.offset = new Vector2(0, 0);
			this.repeat = new Vector2(1, 1);
			this.center = new Vector2(0, 0);
			this.rotation = 0;
			this.matrixAutoUpdate = true;
			this.matrix = new Matrix3();
			this.generateMipmaps = true;
			this.premultiplyAlpha = false;
			this.flipY = true;
			this.unpackAlignment = 4; // valid values: 1, 2, 4, 8 (see http://www.khronos.org/opengles/sdk/docs/man/xhtml/glPixelStorei.xml)
			// Values of encoding !== THREE.LinearEncoding only supported on map, envMap and emissiveMap.
			//
			// Also changing the encoding after already used by a Material will not automatically make the Material
			// update. You need to explicitly call Material.needsUpdate to trigger it to recompile.

			this.encoding = encoding;
			this.version = 0;
			this.onUpdate = null;
			this.isRenderTargetTexture = false;
		}

		updateMatrix() {
			this.matrix.setUvTransform(this.offset.x, this.offset.y, this.repeat.x, this.repeat.y, this.rotation, this.center.x, this.center.y);
		}

		clone() {
			return new this.constructor().copy(this);
		}

		copy(source) {
			this.name = source.name;
			this.image = source.image;
			this.mipmaps = source.mipmaps.slice(0);
			this.mapping = source.mapping;
			this.wrapS = source.wrapS;
			this.wrapT = source.wrapT;
			this.magFilter = source.magFilter;
			this.minFilter = source.minFilter;
			this.anisotropy = source.anisotropy;
			this.format = source.format;
			this.internalFormat = source.internalFormat;
			this.type = source.type;
			this.offset.copy(source.offset);
			this.repeat.copy(source.repeat);
			this.center.copy(source.center);
			this.rotation = source.rotation;
			this.matrixAutoUpdate = source.matrixAutoUpdate;
			this.matrix.copy(source.matrix);
			this.generateMipmaps = source.generateMipmaps;
			this.premultiplyAlpha = source.premultiplyAlpha;
			this.flipY = source.flipY;
			this.unpackAlignment = source.unpackAlignment;
			this.encoding = source.encoding;
			return this;
		}

		toJSON(meta) {
			const isRootObject = meta === undefined || typeof meta === 'string';

			if (!isRootObject && meta.textures[this.uuid] !== undefined) {
				return meta.textures[this.uuid];
			}

			const output = {
				metadata: {
					version: 4.5,
					type: 'Texture',
					generator: 'Texture.toJSON'
				},
				uuid: this.uuid,
				name: this.name,
				mapping: this.mapping,
				repeat: [this.repeat.x, this.repeat.y],
				offset: [this.offset.x, this.offset.y],
				center: [this.center.x, this.center.y],
				rotation: this.rotation,
				wrap: [this.wrapS, this.wrapT],
				format: this.format,
				type: this.type,
				encoding: this.encoding,
				minFilter: this.minFilter,
				magFilter: this.magFilter,
				anisotropy: this.anisotropy,
				flipY: this.flipY,
				premultiplyAlpha: this.premultiplyAlpha,
				unpackAlignment: this.unpackAlignment
			};

			if (this.image !== undefined) {
				// TODO: Move to THREE.Image
				const image = this.image;

				if (image.uuid === undefined) {
					image.uuid = generateUUID(); // UGH
				}

				if (!isRootObject && meta.images[image.uuid] === undefined) {
					let url;

					if (Array.isArray(image)) {
						// process array of images e.g. CubeTexture
						url = [];

						for (let i = 0, l = image.length; i < l; i++) {
							// check cube texture with data textures
							if (image[i].isDataTexture) {
								url.push(serializeImage(image[i].image));
							} else {
								url.push(serializeImage(image[i]));
							}
						}
					} else {
						// process single image
						url = serializeImage(image);
					}

					meta.images[image.uuid] = {
						uuid: image.uuid,
						url: url
					};
				}

				output.image = image.uuid;
			}

			if (!isRootObject) {
				meta.textures[this.uuid] = output;
			}

			return output;
		}

		dispose() {
			this.dispatchEvent({
				type: 'dispose'
			});
		}

		transformUv(uv) {
			if (this.mapping !== UVMapping) return uv;
			uv.applyMatrix3(this.matrix);

			if (uv.x < 0 || uv.x > 1) {
				switch (this.wrapS) {
					case RepeatWrapping:
						uv.x = uv.x - Math.floor(uv.x);
						break;

					case ClampToEdgeWrapping:
						uv.x = uv.x < 0 ? 0 : 1;
						break;

					case MirroredRepeatWrapping:
						if (Math.abs(Math.floor(uv.x) % 2) === 1) {
							uv.x = Math.ceil(uv.x) - uv.x;
						} else {
							uv.x = uv.x - Math.floor(uv.x);
						}

						break;
				}
			}

			if (uv.y < 0 || uv.y > 1) {
				switch (this.wrapT) {
					case RepeatWrapping:
						uv.y = uv.y - Math.floor(uv.y);
						break;

					case ClampToEdgeWrapping:
						uv.y = uv.y < 0 ? 0 : 1;
						break;

					case MirroredRepeatWrapping:
						if (Math.abs(Math.floor(uv.y) % 2) === 1) {
							uv.y = Math.ceil(uv.y) - uv.y;
						} else {
							uv.y = uv.y - Math.floor(uv.y);
						}

						break;
				}
			}

			if (this.flipY) {
				uv.y = 1 - uv.y;
			}

			return uv;
		}

		set needsUpdate(value) {
			if (value === true) this.version++;
		}

	}

	Texture.DEFAULT_IMAGE = undefined;
	Texture.DEFAULT_MAPPING = UVMapping;
	Texture.prototype.isTexture = true;

	function serializeImage(image) {
		if (typeof HTMLImageElement !== 'undefined' && image instanceof HTMLImageElement || typeof HTMLCanvasElement !== 'undefined' && image instanceof HTMLCanvasElement || typeof ImageBitmap !== 'undefined' && image instanceof ImageBitmap) {
			// default images
			return ImageUtils.getDataURL(image);
		} else {
			if (image.data) {
				// images of DataTexture
				return {
					data: Array.prototype.slice.call(image.data),
					width: image.width,
					height: image.height,
					type: image.data.constructor.name
				};
			} else {
				console.warn('THREE.Texture: Unable to serialize Texture.');
				return {};
			}
		}
	}

	class Vector4 {
		constructor(x = 0, y = 0, z = 0, w = 1) {
			this.x = x;
			this.y = y;
			this.z = z;
			this.w = w;
		}

		get width() {
			return this.z;
		}

		set width(value) {
			this.z = value;
		}

		get height() {
			return this.w;
		}

		set height(value) {
			this.w = value;
		}

		set(x, y, z, w) {
			this.x = x;
			this.y = y;
			this.z = z;
			this.w = w;
			return this;
		}

		setScalar(scalar) {
			this.x = scalar;
			this.y = scalar;
			this.z = scalar;
			this.w = scalar;
			return this;
		}

		setX(x) {
			this.x = x;
			return this;
		}

		setY(y) {
			this.y = y;
			return this;
		}

		setZ(z) {
			this.z = z;
			return this;
		}

		setW(w) {
			this.w = w;
			return this;
		}

		setComponent(index, value) {
			switch (index) {
				case 0:
					this.x = value;
					break;

				case 1:
					this.y = value;
					break;

				case 2:
					this.z = value;
					break;

				case 3:
					this.w = value;
					break;

				default:
					throw new Error('index is out of range: ' + index);
			}

			return this;
		}

		getComponent(index) {
			switch (index) {
				case 0:
					return this.x;

				case 1:
					return this.y;

				case 2:
					return this.z;

				case 3:
					return this.w;

				default:
					throw new Error('index is out of range: ' + index);
			}
		}

		clone() {
			return new this.constructor(this.x, this.y, this.z, this.w);
		}

		copy(v) {
			this.x = v.x;
			this.y = v.y;
			this.z = v.z;
			this.w = v.w !== undefined ? v.w : 1;
			return this;
		}

		add(v, w) {
			if (w !== undefined) {
				console.warn('THREE.Vector4: .add() now only accepts one argument. Use .addVectors( a, b ) instead.');
				return this.addVectors(v, w);
			}

			this.x += v.x;
			this.y += v.y;
			this.z += v.z;
			this.w += v.w;
			return this;
		}

		addScalar(s) {
			this.x += s;
			this.y += s;
			this.z += s;
			this.w += s;
			return this;
		}

		addVectors(a, b) {
			this.x = a.x + b.x;
			this.y = a.y + b.y;
			this.z = a.z + b.z;
			this.w = a.w + b.w;
			return this;
		}

		addScaledVector(v, s) {
			this.x += v.x * s;
			this.y += v.y * s;
			this.z += v.z * s;
			this.w += v.w * s;
			return this;
		}

		sub(v, w) {
			if (w !== undefined) {
				console.warn('THREE.Vector4: .sub() now only accepts one argument. Use .subVectors( a, b ) instead.');
				return this.subVectors(v, w);
			}

			this.x -= v.x;
			this.y -= v.y;
			this.z -= v.z;
			this.w -= v.w;
			return this;
		}

		subScalar(s) {
			this.x -= s;
			this.y -= s;
			this.z -= s;
			this.w -= s;
			return this;
		}

		subVectors(a, b) {
			this.x = a.x - b.x;
			this.y = a.y - b.y;
			this.z = a.z - b.z;
			this.w = a.w - b.w;
			return this;
		}

		multiply(v) {
			this.x *= v.x;
			this.y *= v.y;
			this.z *= v.z;
			this.w *= v.w;
			return this;
		}

		multiplyScalar(scalar) {
			this.x *= scalar;
			this.y *= scalar;
			this.z *= scalar;
			this.w *= scalar;
			return this;
		}

		applyMatrix4(m) {
			const x = this.x,
						y = this.y,
						z = this.z,
						w = this.w;
			const e = m.elements;
			this.x = e[0] * x + e[4] * y + e[8] * z + e[12] * w;
			this.y = e[1] * x + e[5] * y + e[9] * z + e[13] * w;
			this.z = e[2] * x + e[6] * y + e[10] * z + e[14] * w;
			this.w = e[3] * x + e[7] * y + e[11] * z + e[15] * w;
			return this;
		}

		divideScalar(scalar) {
			return this.multiplyScalar(1 / scalar);
		}

		setAxisAngleFromQuaternion(q) {
			// http://www.euclideanspace.com/maths/geometry/rotations/conversions/quaternionToAngle/index.htm
			// q is assumed to be normalized
			this.w = 2 * Math.acos(q.w);
			const s = Math.sqrt(1 - q.w * q.w);

			if (s < 0.0001) {
				this.x = 1;
				this.y = 0;
				this.z = 0;
			} else {
				this.x = q.x / s;
				this.y = q.y / s;
				this.z = q.z / s;
			}

			return this;
		}

		setAxisAngleFromRotationMatrix(m) {
			// http://www.euclideanspace.com/maths/geometry/rotations/conversions/matrixToAngle/index.htm
			// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)
			let angle, x, y, z; // variables for result

			const epsilon = 0.01,
						// margin to allow for rounding errors
			epsilon2 = 0.1,
						// margin to distinguish between 0 and 180 degrees
			te = m.elements,
						m11 = te[0],
						m12 = te[4],
						m13 = te[8],
						m21 = te[1],
						m22 = te[5],
						m23 = te[9],
						m31 = te[2],
						m32 = te[6],
						m33 = te[10];

			if (Math.abs(m12 - m21) < epsilon && Math.abs(m13 - m31) < epsilon && Math.abs(m23 - m32) < epsilon) {
				// singularity found
				// first check for identity matrix which must have +1 for all terms
				// in leading diagonal and zero in other terms
				if (Math.abs(m12 + m21) < epsilon2 && Math.abs(m13 + m31) < epsilon2 && Math.abs(m23 + m32) < epsilon2 && Math.abs(m11 + m22 + m33 - 3) < epsilon2) {
					// this singularity is identity matrix so angle = 0
					this.set(1, 0, 0, 0);
					return this; // zero angle, arbitrary axis
				} // otherwise this singularity is angle = 180


				angle = Math.PI;
				const xx = (m11 + 1) / 2;
				const yy = (m22 + 1) / 2;
				const zz = (m33 + 1) / 2;
				const xy = (m12 + m21) / 4;
				const xz = (m13 + m31) / 4;
				const yz = (m23 + m32) / 4;

				if (xx > yy && xx > zz) {
					// m11 is the largest diagonal term
					if (xx < epsilon) {
						x = 0;
						y = 0.707106781;
						z = 0.707106781;
					} else {
						x = Math.sqrt(xx);
						y = xy / x;
						z = xz / x;
					}
				} else if (yy > zz) {
					// m22 is the largest diagonal term
					if (yy < epsilon) {
						x = 0.707106781;
						y = 0;
						z = 0.707106781;
					} else {
						y = Math.sqrt(yy);
						x = xy / y;
						z = yz / y;
					}
				} else {
					// m33 is the largest diagonal term so base result on this
					if (zz < epsilon) {
						x = 0.707106781;
						y = 0.707106781;
						z = 0;
					} else {
						z = Math.sqrt(zz);
						x = xz / z;
						y = yz / z;
					}
				}

				this.set(x, y, z, angle);
				return this; // return 180 deg rotation
			} // as we have reached here there are no singularities so we can handle normally


			let s = Math.sqrt((m32 - m23) * (m32 - m23) + (m13 - m31) * (m13 - m31) + (m21 - m12) * (m21 - m12)); // used to normalize

			if (Math.abs(s) < 0.001) s = 1; // prevent divide by zero, should not happen if matrix is orthogonal and should be
			// caught by singularity test above, but I've left it in just in case

			this.x = (m32 - m23) / s;
			this.y = (m13 - m31) / s;
			this.z = (m21 - m12) / s;
			this.w = Math.acos((m11 + m22 + m33 - 1) / 2);
			return this;
		}

		min(v) {
			this.x = Math.min(this.x, v.x);
			this.y = Math.min(this.y, v.y);
			this.z = Math.min(this.z, v.z);
			this.w = Math.min(this.w, v.w);
			return this;
		}

		max(v) {
			this.x = Math.max(this.x, v.x);
			this.y = Math.max(this.y, v.y);
			this.z = Math.max(this.z, v.z);
			this.w = Math.max(this.w, v.w);
			return this;
		}

		clamp(min, max) {
			// assumes min < max, componentwise
			this.x = Math.max(min.x, Math.min(max.x, this.x));
			this.y = Math.max(min.y, Math.min(max.y, this.y));
			this.z = Math.max(min.z, Math.min(max.z, this.z));
			this.w = Math.max(min.w, Math.min(max.w, this.w));
			return this;
		}

		clampScalar(minVal, maxVal) {
			this.x = Math.max(minVal, Math.min(maxVal, this.x));
			this.y = Math.max(minVal, Math.min(maxVal, this.y));
			this.z = Math.max(minVal, Math.min(maxVal, this.z));
			this.w = Math.max(minVal, Math.min(maxVal, this.w));
			return this;
		}

		clampLength(min, max) {
			const length = this.length();
			return this.divideScalar(length || 1).multiplyScalar(Math.max(min, Math.min(max, length)));
		}

		floor() {
			this.x = Math.floor(this.x);
			this.y = Math.floor(this.y);
			this.z = Math.floor(this.z);
			this.w = Math.floor(this.w);
			return this;
		}

		ceil() {
			this.x = Math.ceil(this.x);
			this.y = Math.ceil(this.y);
			this.z = Math.ceil(this.z);
			this.w = Math.ceil(this.w);
			return this;
		}

		round() {
			this.x = Math.round(this.x);
			this.y = Math.round(this.y);
			this.z = Math.round(this.z);
			this.w = Math.round(this.w);
			return this;
		}

		roundToZero() {
			this.x = this.x < 0 ? Math.ceil(this.x) : Math.floor(this.x);
			this.y = this.y < 0 ? Math.ceil(this.y) : Math.floor(this.y);
			this.z = this.z < 0 ? Math.ceil(this.z) : Math.floor(this.z);
			this.w = this.w < 0 ? Math.ceil(this.w) : Math.floor(this.w);
			return this;
		}

		negate() {
			this.x = -this.x;
			this.y = -this.y;
			this.z = -this.z;
			this.w = -this.w;
			return this;
		}

		dot(v) {
			return this.x * v.x + this.y * v.y + this.z * v.z + this.w * v.w;
		}

		lengthSq() {
			return this.x * this.x + this.y * this.y + this.z * this.z + this.w * this.w;
		}

		length() {
			return Math.sqrt(this.x * this.x + this.y * this.y + this.z * this.z + this.w * this.w);
		}

		manhattanLength() {
			return Math.abs(this.x) + Math.abs(this.y) + Math.abs(this.z) + Math.abs(this.w);
		}

		normalize() {
			return this.divideScalar(this.length() || 1);
		}

		setLength(length) {
			return this.normalize().multiplyScalar(length);
		}

		lerp(v, alpha) {
			this.x += (v.x - this.x) * alpha;
			this.y += (v.y - this.y) * alpha;
			this.z += (v.z - this.z) * alpha;
			this.w += (v.w - this.w) * alpha;
			return this;
		}

		lerpVectors(v1, v2, alpha) {
			this.x = v1.x + (v2.x - v1.x) * alpha;
			this.y = v1.y + (v2.y - v1.y) * alpha;
			this.z = v1.z + (v2.z - v1.z) * alpha;
			this.w = v1.w + (v2.w - v1.w) * alpha;
			return this;
		}

		equals(v) {
			return v.x === this.x && v.y === this.y && v.z === this.z && v.w === this.w;
		}

		fromArray(array, offset = 0) {
			this.x = array[offset];
			this.y = array[offset + 1];
			this.z = array[offset + 2];
			this.w = array[offset + 3];
			return this;
		}

		toArray(array = [], offset = 0) {
			array[offset] = this.x;
			array[offset + 1] = this.y;
			array[offset + 2] = this.z;
			array[offset + 3] = this.w;
			return array;
		}

		fromBufferAttribute(attribute, index, offset) {
			if (offset !== undefined) {
				console.warn('THREE.Vector4: offset has been removed from .fromBufferAttribute().');
			}

			this.x = attribute.getX(index);
			this.y = attribute.getY(index);
			this.z = attribute.getZ(index);
			this.w = attribute.getW(index);
			return this;
		}

		random() {
			this.x = Math.random();
			this.y = Math.random();
			this.z = Math.random();
			this.w = Math.random();
			return this;
		}

		*[Symbol.iterator]() {
			yield this.x;
			yield this.y;
			yield this.z;
			yield this.w;
		}

	}

	Vector4.prototype.isVector4 = true;

	/*
	 In options, we can specify:
	 * Texture parameters for an auto-generated target texture
	 * depthBuffer/stencilBuffer: Booleans to indicate if we should generate these buffers
	*/

	class WebGLRenderTarget extends EventDispatcher {
		constructor(width, height, options = {}) {
			super();
			this.width = width;
			this.height = height;
			this.depth = 1;
			this.scissor = new Vector4(0, 0, width, height);
			this.scissorTest = false;
			this.viewport = new Vector4(0, 0, width, height);
			this.texture = new Texture(undefined, options.mapping, options.wrapS, options.wrapT, options.magFilter, options.minFilter, options.format, options.type, options.anisotropy, options.encoding);
			this.texture.isRenderTargetTexture = true;
			this.texture.image = {
				width: width,
				height: height,
				depth: 1
			};
			this.texture.generateMipmaps = options.generateMipmaps !== undefined ? options.generateMipmaps : false;
			this.texture.internalFormat = options.internalFormat !== undefined ? options.internalFormat : null;
			this.texture.minFilter = options.minFilter !== undefined ? options.minFilter : LinearFilter;
			this.depthBuffer = options.depthBuffer !== undefined ? options.depthBuffer : true;
			this.stencilBuffer = options.stencilBuffer !== undefined ? options.stencilBuffer : false;
			this.depthTexture = options.depthTexture !== undefined ? options.depthTexture : null;
		}

		setTexture(texture) {
			texture.image = {
				width: this.width,
				height: this.height,
				depth: this.depth
			};
			this.texture = texture;
		}

		setSize(width, height, depth = 1) {
			if (this.width !== width || this.height !== height || this.depth !== depth) {
				this.width = width;
				this.height = height;
				this.depth = depth;
				this.texture.image.width = width;
				this.texture.image.height = height;
				this.texture.image.depth = depth;
				this.dispose();
			}

			this.viewport.set(0, 0, width, height);
			this.scissor.set(0, 0, width, height);
		}

		clone() {
			return new this.constructor().copy(this);
		}

		copy(source) {
			this.width = source.width;
			this.height = source.height;
			this.depth = source.depth;
			this.viewport.copy(source.viewport);
			this.texture = source.texture.clone();
			this.texture.image = { ...this.texture.image
			}; // See #20328.

			this.depthBuffer = source.depthBuffer;
			this.stencilBuffer = source.stencilBuffer;
			this.depthTexture = source.depthTexture;
			return this;
		}

		dispose() {
			this.dispatchEvent({
				type: 'dispose'
			});
		}

	}

	WebGLRenderTarget.prototype.isWebGLRenderTarget = true;

	class WebGLMultipleRenderTargets extends WebGLRenderTarget {
		constructor(width, height, count) {
			super(width, height);
			const texture = this.texture;
			this.texture = [];

			for (let i = 0; i < count; i++) {
				this.texture[i] = texture.clone();
			}
		}

		setSize(width, height, depth = 1) {
			if (this.width !== width || this.height !== height || this.depth !== depth) {
				this.width = width;
				this.height = height;
				this.depth = depth;

				for (let i = 0, il = this.texture.length; i < il; i++) {
					this.texture[i].image.width = width;
					this.texture[i].image.height = height;
					this.texture[i].image.depth = depth;
				}

				this.dispose();
			}

			this.viewport.set(0, 0, width, height);
			this.scissor.set(0, 0, width, height);
			return this;
		}

		copy(source) {
			this.dispose();
			this.width = source.width;
			this.height = source.height;
			this.depth = source.depth;
			this.viewport.set(0, 0, this.width, this.height);
			this.scissor.set(0, 0, this.width, this.height);
			this.depthBuffer = source.depthBuffer;
			this.stencilBuffer = source.stencilBuffer;
			this.depthTexture = source.depthTexture;
			this.texture.length = 0;

			for (let i = 0, il = source.texture.length; i < il; i++) {
				this.texture[i] = source.texture[i].clone();
			}

			return this;
		}

	}

	WebGLMultipleRenderTargets.prototype.isWebGLMultipleRenderTargets = true;

	class WebGLMultisampleRenderTarget extends WebGLRenderTarget {
		constructor(width, height, options) {
			super(width, height, options);
			this.samples = 4;
		}

		copy(source) {
			super.copy.call(this, source);
			this.samples = source.samples;
			return this;
		}

	}

	WebGLMultisampleRenderTarget.prototype.isWebGLMultisampleRenderTarget = true;

	class Quaternion {
		constructor(x = 0, y = 0, z = 0, w = 1) {
			this._x = x;
			this._y = y;
			this._z = z;
			this._w = w;
		}

		static slerp(qa, qb, qm, t) {
			console.warn('THREE.Quaternion: Static .slerp() has been deprecated. Use qm.slerpQuaternions( qa, qb, t ) instead.');
			return qm.slerpQuaternions(qa, qb, t);
		}

		static slerpFlat(dst, dstOffset, src0, srcOffset0, src1, srcOffset1, t) {
			// fuzz-free, array-based Quaternion SLERP operation
			let x0 = src0[srcOffset0 + 0],
					y0 = src0[srcOffset0 + 1],
					z0 = src0[srcOffset0 + 2],
					w0 = src0[srcOffset0 + 3];
			const x1 = src1[srcOffset1 + 0],
						y1 = src1[srcOffset1 + 1],
						z1 = src1[srcOffset1 + 2],
						w1 = src1[srcOffset1 + 3];

			if (t === 0) {
				dst[dstOffset + 0] = x0;
				dst[dstOffset + 1] = y0;
				dst[dstOffset + 2] = z0;
				dst[dstOffset + 3] = w0;
				return;
			}

			if (t === 1) {
				dst[dstOffset + 0] = x1;
				dst[dstOffset + 1] = y1;
				dst[dstOffset + 2] = z1;
				dst[dstOffset + 3] = w1;
				return;
			}

			if (w0 !== w1 || x0 !== x1 || y0 !== y1 || z0 !== z1) {
				let s = 1 - t;
				const cos = x0 * x1 + y0 * y1 + z0 * z1 + w0 * w1,
							dir = cos >= 0 ? 1 : -1,
							sqrSin = 1 - cos * cos; // Skip the Slerp for tiny steps to avoid numeric problems:

				if (sqrSin > Number.EPSILON) {
					const sin = Math.sqrt(sqrSin),
								len = Math.atan2(sin, cos * dir);
					s = Math.sin(s * len) / sin;
					t = Math.sin(t * len) / sin;
				}

				const tDir = t * dir;
				x0 = x0 * s + x1 * tDir;
				y0 = y0 * s + y1 * tDir;
				z0 = z0 * s + z1 * tDir;
				w0 = w0 * s + w1 * tDir; // Normalize in case we just did a lerp:

				if (s === 1 - t) {
					const f = 1 / Math.sqrt(x0 * x0 + y0 * y0 + z0 * z0 + w0 * w0);
					x0 *= f;
					y0 *= f;
					z0 *= f;
					w0 *= f;
				}
			}

			dst[dstOffset] = x0;
			dst[dstOffset + 1] = y0;
			dst[dstOffset + 2] = z0;
			dst[dstOffset + 3] = w0;
		}

		static multiplyQuaternionsFlat(dst, dstOffset, src0, srcOffset0, src1, srcOffset1) {
			const x0 = src0[srcOffset0];
			const y0 = src0[srcOffset0 + 1];
			const z0 = src0[srcOffset0 + 2];
			const w0 = src0[srcOffset0 + 3];
			const x1 = src1[srcOffset1];
			const y1 = src1[srcOffset1 + 1];
			const z1 = src1[srcOffset1 + 2];
			const w1 = src1[srcOffset1 + 3];
			dst[dstOffset] = x0 * w1 + w0 * x1 + y0 * z1 - z0 * y1;
			dst[dstOffset + 1] = y0 * w1 + w0 * y1 + z0 * x1 - x0 * z1;
			dst[dstOffset + 2] = z0 * w1 + w0 * z1 + x0 * y1 - y0 * x1;
			dst[dstOffset + 3] = w0 * w1 - x0 * x1 - y0 * y1 - z0 * z1;
			return dst;
		}

		get x() {
			return this._x;
		}

		set x(value) {
			this._x = value;

			this._onChangeCallback();
		}

		get y() {
			return this._y;
		}

		set y(value) {
			this._y = value;

			this._onChangeCallback();
		}

		get z() {
			return this._z;
		}

		set z(value) {
			this._z = value;

			this._onChangeCallback();
		}

		get w() {
			return this._w;
		}

		set w(value) {
			this._w = value;

			this._onChangeCallback();
		}

		set(x, y, z, w) {
			this._x = x;
			this._y = y;
			this._z = z;
			this._w = w;

			this._onChangeCallback();

			return this;
		}

		clone() {
			return new this.constructor(this._x, this._y, this._z, this._w);
		}

		copy(quaternion) {
			this._x = quaternion.x;
			this._y = quaternion.y;
			this._z = quaternion.z;
			this._w = quaternion.w;

			this._onChangeCallback();

			return this;
		}

		setFromEuler(euler, update) {
			if (!(euler && euler.isEuler)) {
				throw new Error('THREE.Quaternion: .setFromEuler() now expects an Euler rotation rather than a Vector3 and order.');
			}

			const x = euler._x,
						y = euler._y,
						z = euler._z,
						order = euler._order; // http://www.mathworks.com/matlabcentral/fileexchange/
			// 	20696-function-to-convert-between-dcm-euler-angles-quaternions-and-euler-vectors/
			//	content/SpinCalc.m

			const cos = Math.cos;
			const sin = Math.sin;
			const c1 = cos(x / 2);
			const c2 = cos(y / 2);
			const c3 = cos(z / 2);
			const s1 = sin(x / 2);
			const s2 = sin(y / 2);
			const s3 = sin(z / 2);

			switch (order) {
				case 'XYZ':
					this._x = s1 * c2 * c3 + c1 * s2 * s3;
					this._y = c1 * s2 * c3 - s1 * c2 * s3;
					this._z = c1 * c2 * s3 + s1 * s2 * c3;
					this._w = c1 * c2 * c3 - s1 * s2 * s3;
					break;

				case 'YXZ':
					this._x = s1 * c2 * c3 + c1 * s2 * s3;
					this._y = c1 * s2 * c3 - s1 * c2 * s3;
					this._z = c1 * c2 * s3 - s1 * s2 * c3;
					this._w = c1 * c2 * c3 + s1 * s2 * s3;
					break;

				case 'ZXY':
					this._x = s1 * c2 * c3 - c1 * s2 * s3;
					this._y = c1 * s2 * c3 + s1 * c2 * s3;
					this._z = c1 * c2 * s3 + s1 * s2 * c3;
					this._w = c1 * c2 * c3 - s1 * s2 * s3;
					break;

				case 'ZYX':
					this._x = s1 * c2 * c3 - c1 * s2 * s3;
					this._y = c1 * s2 * c3 + s1 * c2 * s3;
					this._z = c1 * c2 * s3 - s1 * s2 * c3;
					this._w = c1 * c2 * c3 + s1 * s2 * s3;
					break;

				case 'YZX':
					this._x = s1 * c2 * c3 + c1 * s2 * s3;
					this._y = c1 * s2 * c3 + s1 * c2 * s3;
					this._z = c1 * c2 * s3 - s1 * s2 * c3;
					this._w = c1 * c2 * c3 - s1 * s2 * s3;
					break;

				case 'XZY':
					this._x = s1 * c2 * c3 - c1 * s2 * s3;
					this._y = c1 * s2 * c3 - s1 * c2 * s3;
					this._z = c1 * c2 * s3 + s1 * s2 * c3;
					this._w = c1 * c2 * c3 + s1 * s2 * s3;
					break;

				default:
					console.warn('THREE.Quaternion: .setFromEuler() encountered an unknown order: ' + order);
			}

			if (update !== false) this._onChangeCallback();
			return this;
		}

		setFromAxisAngle(axis, angle) {
			// http://www.euclideanspace.com/maths/geometry/rotations/conversions/angleToQuaternion/index.htm
			// assumes axis is normalized
			const halfAngle = angle / 2,
						s = Math.sin(halfAngle);
			this._x = axis.x * s;
			this._y = axis.y * s;
			this._z = axis.z * s;
			this._w = Math.cos(halfAngle);

			this._onChangeCallback();

			return this;
		}

		setFromRotationMatrix(m) {
			// http://www.euclideanspace.com/maths/geometry/rotations/conversions/matrixToQuaternion/index.htm
			// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)
			const te = m.elements,
						m11 = te[0],
						m12 = te[4],
						m13 = te[8],
						m21 = te[1],
						m22 = te[5],
						m23 = te[9],
						m31 = te[2],
						m32 = te[6],
						m33 = te[10],
						trace = m11 + m22 + m33;

			if (trace > 0) {
				const s = 0.5 / Math.sqrt(trace + 1.0);
				this._w = 0.25 / s;
				this._x = (m32 - m23) * s;
				this._y = (m13 - m31) * s;
				this._z = (m21 - m12) * s;
			} else if (m11 > m22 && m11 > m33) {
				const s = 2.0 * Math.sqrt(1.0 + m11 - m22 - m33);
				this._w = (m32 - m23) / s;
				this._x = 0.25 * s;
				this._y = (m12 + m21) / s;
				this._z = (m13 + m31) / s;
			} else if (m22 > m33) {
				const s = 2.0 * Math.sqrt(1.0 + m22 - m11 - m33);
				this._w = (m13 - m31) / s;
				this._x = (m12 + m21) / s;
				this._y = 0.25 * s;
				this._z = (m23 + m32) / s;
			} else {
				const s = 2.0 * Math.sqrt(1.0 + m33 - m11 - m22);
				this._w = (m21 - m12) / s;
				this._x = (m13 + m31) / s;
				this._y = (m23 + m32) / s;
				this._z = 0.25 * s;
			}

			this._onChangeCallback();

			return this;
		}

		setFromUnitVectors(vFrom, vTo) {
			// assumes direction vectors vFrom and vTo are normalized
			let r = vFrom.dot(vTo) + 1;

			if (r < Number.EPSILON) {
				// vFrom and vTo point in opposite directions
				r = 0;

				if (Math.abs(vFrom.x) > Math.abs(vFrom.z)) {
					this._x = -vFrom.y;
					this._y = vFrom.x;
					this._z = 0;
					this._w = r;
				} else {
					this._x = 0;
					this._y = -vFrom.z;
					this._z = vFrom.y;
					this._w = r;
				}
			} else {
				// crossVectors( vFrom, vTo ); // inlined to avoid cyclic dependency on Vector3
				this._x = vFrom.y * vTo.z - vFrom.z * vTo.y;
				this._y = vFrom.z * vTo.x - vFrom.x * vTo.z;
				this._z = vFrom.x * vTo.y - vFrom.y * vTo.x;
				this._w = r;
			}

			return this.normalize();
		}

		angleTo(q) {
			return 2 * Math.acos(Math.abs(clamp(this.dot(q), -1, 1)));
		}

		rotateTowards(q, step) {
			const angle = this.angleTo(q);
			if (angle === 0) return this;
			const t = Math.min(1, step / angle);
			this.slerp(q, t);
			return this;
		}

		identity() {
			return this.set(0, 0, 0, 1);
		}

		invert() {
			// quaternion is assumed to have unit length
			return this.conjugate();
		}

		conjugate() {
			this._x *= -1;
			this._y *= -1;
			this._z *= -1;

			this._onChangeCallback();

			return this;
		}

		dot(v) {
			return this._x * v._x + this._y * v._y + this._z * v._z + this._w * v._w;
		}

		lengthSq() {
			return this._x * this._x + this._y * this._y + this._z * this._z + this._w * this._w;
		}

		length() {
			return Math.sqrt(this._x * this._x + this._y * this._y + this._z * this._z + this._w * this._w);
		}

		normalize() {
			let l = this.length();

			if (l === 0) {
				this._x = 0;
				this._y = 0;
				this._z = 0;
				this._w = 1;
			} else {
				l = 1 / l;
				this._x = this._x * l;
				this._y = this._y * l;
				this._z = this._z * l;
				this._w = this._w * l;
			}

			this._onChangeCallback();

			return this;
		}

		multiply(q, p) {
			if (p !== undefined) {
				console.warn('THREE.Quaternion: .multiply() now only accepts one argument. Use .multiplyQuaternions( a, b ) instead.');
				return this.multiplyQuaternions(q, p);
			}

			return this.multiplyQuaternions(this, q);
		}

		premultiply(q) {
			return this.multiplyQuaternions(q, this);
		}

		multiplyQuaternions(a, b) {
			// from http://www.euclideanspace.com/maths/algebra/realNormedAlgebra/quaternions/code/index.htm
			const qax = a._x,
						qay = a._y,
						qaz = a._z,
						qaw = a._w;
			const qbx = b._x,
						qby = b._y,
						qbz = b._z,
						qbw = b._w;
			this._x = qax * qbw + qaw * qbx + qay * qbz - qaz * qby;
			this._y = qay * qbw + qaw * qby + qaz * qbx - qax * qbz;
			this._z = qaz * qbw + qaw * qbz + qax * qby - qay * qbx;
			this._w = qaw * qbw - qax * qbx - qay * qby - qaz * qbz;

			this._onChangeCallback();

			return this;
		}

		slerp(qb, t) {
			if (t === 0) return this;
			if (t === 1) return this.copy(qb);
			const x = this._x,
						y = this._y,
						z = this._z,
						w = this._w; // http://www.euclideanspace.com/maths/algebra/realNormedAlgebra/quaternions/slerp/

			let cosHalfTheta = w * qb._w + x * qb._x + y * qb._y + z * qb._z;

			if (cosHalfTheta < 0) {
				this._w = -qb._w;
				this._x = -qb._x;
				this._y = -qb._y;
				this._z = -qb._z;
				cosHalfTheta = -cosHalfTheta;
			} else {
				this.copy(qb);
			}

			if (cosHalfTheta >= 1.0) {
				this._w = w;
				this._x = x;
				this._y = y;
				this._z = z;
				return this;
			}

			const sqrSinHalfTheta = 1.0 - cosHalfTheta * cosHalfTheta;

			if (sqrSinHalfTheta <= Number.EPSILON) {
				const s = 1 - t;
				this._w = s * w + t * this._w;
				this._x = s * x + t * this._x;
				this._y = s * y + t * this._y;
				this._z = s * z + t * this._z;
				this.normalize();

				this._onChangeCallback();

				return this;
			}

			const sinHalfTheta = Math.sqrt(sqrSinHalfTheta);
			const halfTheta = Math.atan2(sinHalfTheta, cosHalfTheta);
			const ratioA = Math.sin((1 - t) * halfTheta) / sinHalfTheta,
						ratioB = Math.sin(t * halfTheta) / sinHalfTheta;
			this._w = w * ratioA + this._w * ratioB;
			this._x = x * ratioA + this._x * ratioB;
			this._y = y * ratioA + this._y * ratioB;
			this._z = z * ratioA + this._z * ratioB;

			this._onChangeCallback();

			return this;
		}

		slerpQuaternions(qa, qb, t) {
			this.copy(qa).slerp(qb, t);
		}

		random() {
			// Derived from http://planning.cs.uiuc.edu/node198.html
			// Note, this source uses w, x, y, z ordering,
			// so we swap the order below.
			const u1 = Math.random();
			const sqrt1u1 = Math.sqrt(1 - u1);
			const sqrtu1 = Math.sqrt(u1);
			const u2 = 2 * Math.PI * Math.random();
			const u3 = 2 * Math.PI * Math.random();
			return this.set(sqrt1u1 * Math.cos(u2), sqrtu1 * Math.sin(u3), sqrtu1 * Math.cos(u3), sqrt1u1 * Math.sin(u2));
		}

		equals(quaternion) {
			return quaternion._x === this._x && quaternion._y === this._y && quaternion._z === this._z && quaternion._w === this._w;
		}

		fromArray(array, offset = 0) {
			this._x = array[offset];
			this._y = array[offset + 1];
			this._z = array[offset + 2];
			this._w = array[offset + 3];

			this._onChangeCallback();

			return this;
		}

		toArray(array = [], offset = 0) {
			array[offset] = this._x;
			array[offset + 1] = this._y;
			array[offset + 2] = this._z;
			array[offset + 3] = this._w;
			return array;
		}

		fromBufferAttribute(attribute, index) {
			this._x = attribute.getX(index);
			this._y = attribute.getY(index);
			this._z = attribute.getZ(index);
			this._w = attribute.getW(index);
			return this;
		}

		_onChange(callback) {
			this._onChangeCallback = callback;
			return this;
		}

		_onChangeCallback() {}

	}

	Quaternion.prototype.isQuaternion = true;

	class Vector3 {
		constructor(x = 0, y = 0, z = 0) {
			this.x = x;
			this.y = y;
			this.z = z;
		}

		set(x, y, z) {
			if (z === undefined) z = this.z; // sprite.scale.set(x,y)

			this.x = x;
			this.y = y;
			this.z = z;
			return this;
		}

		setScalar(scalar) {
			this.x = scalar;
			this.y = scalar;
			this.z = scalar;
			return this;
		}

		setX(x) {
			this.x = x;
			return this;
		}

		setY(y) {
			this.y = y;
			return this;
		}

		setZ(z) {
			this.z = z;
			return this;
		}

		setComponent(index, value) {
			switch (index) {
				case 0:
					this.x = value;
					break;

				case 1:
					this.y = value;
					break;

				case 2:
					this.z = value;
					break;

				default:
					throw new Error('index is out of range: ' + index);
			}

			return this;
		}

		getComponent(index) {
			switch (index) {
				case 0:
					return this.x;

				case 1:
					return this.y;

				case 2:
					return this.z;

				default:
					throw new Error('index is out of range: ' + index);
			}
		}

		clone() {
			return new this.constructor(this.x, this.y, this.z);
		}

		copy(v) {
			this.x = v.x;
			this.y = v.y;
			this.z = v.z;
			return this;
		}

		add(v, w) {
			if (w !== undefined) {
				console.warn('THREE.Vector3: .add() now only accepts one argument. Use .addVectors( a, b ) instead.');
				return this.addVectors(v, w);
			}

			this.x += v.x;
			this.y += v.y;
			this.z += v.z;
			return this;
		}

		addScalar(s) {
			this.x += s;
			this.y += s;
			this.z += s;
			return this;
		}

		addVectors(a, b) {
			this.x = a.x + b.x;
			this.y = a.y + b.y;
			this.z = a.z + b.z;
			return this;
		}

		addScaledVector(v, s) {
			this.x += v.x * s;
			this.y += v.y * s;
			this.z += v.z * s;
			return this;
		}

		sub(v, w) {
			if (w !== undefined) {
				console.warn('THREE.Vector3: .sub() now only accepts one argument. Use .subVectors( a, b ) instead.');
				return this.subVectors(v, w);
			}

			this.x -= v.x;
			this.y -= v.y;
			this.z -= v.z;
			return this;
		}

		subScalar(s) {
			this.x -= s;
			this.y -= s;
			this.z -= s;
			return this;
		}

		subVectors(a, b) {
			this.x = a.x - b.x;
			this.y = a.y - b.y;
			this.z = a.z - b.z;
			return this;
		}

		multiply(v, w) {
			if (w !== undefined) {
				console.warn('THREE.Vector3: .multiply() now only accepts one argument. Use .multiplyVectors( a, b ) instead.');
				return this.multiplyVectors(v, w);
			}

			this.x *= v.x;
			this.y *= v.y;
			this.z *= v.z;
			return this;
		}

		multiplyScalar(scalar) {
			this.x *= scalar;
			this.y *= scalar;
			this.z *= scalar;
			return this;
		}

		multiplyVectors(a, b) {
			this.x = a.x * b.x;
			this.y = a.y * b.y;
			this.z = a.z * b.z;
			return this;
		}

		applyEuler(euler) {
			if (!(euler && euler.isEuler)) {
				console.error('THREE.Vector3: .applyEuler() now expects an Euler rotation rather than a Vector3 and order.');
			}

			return this.applyQuaternion(_quaternion$4.setFromEuler(euler));
		}

		applyAxisAngle(axis, angle) {
			return this.applyQuaternion(_quaternion$4.setFromAxisAngle(axis, angle));
		}

		applyMatrix3(m) {
			const x = this.x,
						y = this.y,
						z = this.z;
			const e = m.elements;
			this.x = e[0] * x + e[3] * y + e[6] * z;
			this.y = e[1] * x + e[4] * y + e[7] * z;
			this.z = e[2] * x + e[5] * y + e[8] * z;
			return this;
		}

		applyNormalMatrix(m) {
			return this.applyMatrix3(m).normalize();
		}

		applyMatrix4(m) {
			const x = this.x,
						y = this.y,
						z = this.z;
			const e = m.elements;
			const w = 1 / (e[3] * x + e[7] * y + e[11] * z + e[15]);
			this.x = (e[0] * x + e[4] * y + e[8] * z + e[12]) * w;
			this.y = (e[1] * x + e[5] * y + e[9] * z + e[13]) * w;
			this.z = (e[2] * x + e[6] * y + e[10] * z + e[14]) * w;
			return this;
		}

		applyQuaternion(q) {
			const x = this.x,
						y = this.y,
						z = this.z;
			const qx = q.x,
						qy = q.y,
						qz = q.z,
						qw = q.w; // calculate quat * vector

			const ix = qw * x + qy * z - qz * y;
			const iy = qw * y + qz * x - qx * z;
			const iz = qw * z + qx * y - qy * x;
			const iw = -qx * x - qy * y - qz * z; // calculate result * inverse quat

			this.x = ix * qw + iw * -qx + iy * -qz - iz * -qy;
			this.y = iy * qw + iw * -qy + iz * -qx - ix * -qz;
			this.z = iz * qw + iw * -qz + ix * -qy - iy * -qx;
			return this;
		}

		project(camera) {
			return this.applyMatrix4(camera.matrixWorldInverse).applyMatrix4(camera.projectionMatrix);
		}

		unproject(camera) {
			return this.applyMatrix4(camera.projectionMatrixInverse).applyMatrix4(camera.matrixWorld);
		}

		transformDirection(m) {
			// input: THREE.Matrix4 affine matrix
			// vector interpreted as a direction
			const x = this.x,
						y = this.y,
						z = this.z;
			const e = m.elements;
			this.x = e[0] * x + e[4] * y + e[8] * z;
			this.y = e[1] * x + e[5] * y + e[9] * z;
			this.z = e[2] * x + e[6] * y + e[10] * z;
			return this.normalize();
		}

		divide(v) {
			this.x /= v.x;
			this.y /= v.y;
			this.z /= v.z;
			return this;
		}

		divideScalar(scalar) {
			return this.multiplyScalar(1 / scalar);
		}

		min(v) {
			this.x = Math.min(this.x, v.x);
			this.y = Math.min(this.y, v.y);
			this.z = Math.min(this.z, v.z);
			return this;
		}

		max(v) {
			this.x = Math.max(this.x, v.x);
			this.y = Math.max(this.y, v.y);
			this.z = Math.max(this.z, v.z);
			return this;
		}

		clamp(min, max) {
			// assumes min < max, componentwise
			this.x = Math.max(min.x, Math.min(max.x, this.x));
			this.y = Math.max(min.y, Math.min(max.y, this.y));
			this.z = Math.max(min.z, Math.min(max.z, this.z));
			return this;
		}

		clampScalar(minVal, maxVal) {
			this.x = Math.max(minVal, Math.min(maxVal, this.x));
			this.y = Math.max(minVal, Math.min(maxVal, this.y));
			this.z = Math.max(minVal, Math.min(maxVal, this.z));
			return this;
		}

		clampLength(min, max) {
			const length = this.length();
			return this.divideScalar(length || 1).multiplyScalar(Math.max(min, Math.min(max, length)));
		}

		floor() {
			this.x = Math.floor(this.x);
			this.y = Math.floor(this.y);
			this.z = Math.floor(this.z);
			return this;
		}

		ceil() {
			this.x = Math.ceil(this.x);
			this.y = Math.ceil(this.y);
			this.z = Math.ceil(this.z);
			return this;
		}

		round() {
			this.x = Math.round(this.x);
			this.y = Math.round(this.y);
			this.z = Math.round(this.z);
			return this;
		}

		roundToZero() {
			this.x = this.x < 0 ? Math.ceil(this.x) : Math.floor(this.x);
			this.y = this.y < 0 ? Math.ceil(this.y) : Math.floor(this.y);
			this.z = this.z < 0 ? Math.ceil(this.z) : Math.floor(this.z);
			return this;
		}

		negate() {
			this.x = -this.x;
			this.y = -this.y;
			this.z = -this.z;
			return this;
		}

		dot(v) {
			return this.x * v.x + this.y * v.y + this.z * v.z;
		} // TODO lengthSquared?


		lengthSq() {
			return this.x * this.x + this.y * this.y + this.z * this.z;
		}

		length() {
			return Math.sqrt(this.x * this.x + this.y * this.y + this.z * this.z);
		}

		manhattanLength() {
			return Math.abs(this.x) + Math.abs(this.y) + Math.abs(this.z);
		}

		normalize() {
			return this.divideScalar(this.length() || 1);
		}

		setLength(length) {
			return this.normalize().multiplyScalar(length);
		}

		lerp(v, alpha) {
			this.x += (v.x - this.x) * alpha;
			this.y += (v.y - this.y) * alpha;
			this.z += (v.z - this.z) * alpha;
			return this;
		}

		lerpVectors(v1, v2, alpha) {
			this.x = v1.x + (v2.x - v1.x) * alpha;
			this.y = v1.y + (v2.y - v1.y) * alpha;
			this.z = v1.z + (v2.z - v1.z) * alpha;
			return this;
		}

		cross(v, w) {
			if (w !== undefined) {
				console.warn('THREE.Vector3: .cross() now only accepts one argument. Use .crossVectors( a, b ) instead.');
				return this.crossVectors(v, w);
			}

			return this.crossVectors(this, v);
		}

		crossVectors(a, b) {
			const ax = a.x,
						ay = a.y,
						az = a.z;
			const bx = b.x,
						by = b.y,
						bz = b.z;
			this.x = ay * bz - az * by;
			this.y = az * bx - ax * bz;
			this.z = ax * by - ay * bx;
			return this;
		}

		projectOnVector(v) {
			const denominator = v.lengthSq();
			if (denominator === 0) return this.set(0, 0, 0);
			const scalar = v.dot(this) / denominator;
			return this.copy(v).multiplyScalar(scalar);
		}

		projectOnPlane(planeNormal) {
			_vector$c.copy(this).projectOnVector(planeNormal);

			return this.sub(_vector$c);
		}

		reflect(normal) {
			// reflect incident vector off plane orthogonal to normal
			// normal is assumed to have unit length
			return this.sub(_vector$c.copy(normal).multiplyScalar(2 * this.dot(normal)));
		}

		angleTo(v) {
			const denominator = Math.sqrt(this.lengthSq() * v.lengthSq());
			if (denominator === 0) return Math.PI / 2;
			const theta = this.dot(v) / denominator; // clamp, to handle numerical problems

			return Math.acos(clamp(theta, -1, 1));
		}

		distanceTo(v) {
			return Math.sqrt(this.distanceToSquared(v));
		}

		distanceToSquared(v) {
			const dx = this.x - v.x,
						dy = this.y - v.y,
						dz = this.z - v.z;
			return dx * dx + dy * dy + dz * dz;
		}

		manhattanDistanceTo(v) {
			return Math.abs(this.x - v.x) + Math.abs(this.y - v.y) + Math.abs(this.z - v.z);
		}

		setFromSpherical(s) {
			return this.setFromSphericalCoords(s.radius, s.phi, s.theta);
		}

		setFromSphericalCoords(radius, phi, theta) {
			const sinPhiRadius = Math.sin(phi) * radius;
			this.x = sinPhiRadius * Math.sin(theta);
			this.y = Math.cos(phi) * radius;
			this.z = sinPhiRadius * Math.cos(theta);
			return this;
		}

		setFromCylindrical(c) {
			return this.setFromCylindricalCoords(c.radius, c.theta, c.y);
		}

		setFromCylindricalCoords(radius, theta, y) {
			this.x = radius * Math.sin(theta);
			this.y = y;
			this.z = radius * Math.cos(theta);
			return this;
		}

		setFromMatrixPosition(m) {
			const e = m.elements;
			this.x = e[12];
			this.y = e[13];
			this.z = e[14];
			return this;
		}

		setFromMatrixScale(m) {
			const sx = this.setFromMatrixColumn(m, 0).length();
			const sy = this.setFromMatrixColumn(m, 1).length();
			const sz = this.setFromMatrixColumn(m, 2).length();
			this.x = sx;
			this.y = sy;
			this.z = sz;
			return this;
		}

		setFromMatrixColumn(m, index) {
			return this.fromArray(m.elements, index * 4);
		}

		setFromMatrix3Column(m, index) {
			return this.fromArray(m.elements, index * 3);
		}

		equals(v) {
			return v.x === this.x && v.y === this.y && v.z === this.z;
		}

		fromArray(array, offset = 0) {
			this.x = array[offset];
			this.y = array[offset + 1];
			this.z = array[offset + 2];
			return this;
		}

		toArray(array = [], offset = 0) {
			array[offset] = this.x;
			array[offset + 1] = this.y;
			array[offset + 2] = this.z;
			return array;
		}

		fromBufferAttribute(attribute, index, offset) {
			if (offset !== undefined) {
				console.warn('THREE.Vector3: offset has been removed from .fromBufferAttribute().');
			}

			this.x = attribute.getX(index);
			this.y = attribute.getY(index);
			this.z = attribute.getZ(index);
			return this;
		}

		random() {
			this.x = Math.random();
			this.y = Math.random();
			this.z = Math.random();
			return this;
		}

		randomDirection() {
			// Derived from https://mathworld.wolfram.com/SpherePointPicking.html
			const u = (Math.random() - 0.5) * 2;
			const t = Math.random() * Math.PI * 2;
			const f = Math.sqrt(1 - u ** 2);
			this.x = f * Math.cos(t);
			this.y = f * Math.sin(t);
			this.z = u;
			return this;
		}

		*[Symbol.iterator]() {
			yield this.x;
			yield this.y;
			yield this.z;
		}

	}

	Vector3.prototype.isVector3 = true;

	const _vector$c = /*@__PURE__*/new Vector3();

	const _quaternion$4 = /*@__PURE__*/new Quaternion();

	class Box3 {
		constructor(min = new Vector3(+Infinity, +Infinity, +Infinity), max = new Vector3(-Infinity, -Infinity, -Infinity)) {
			this.min = min;
			this.max = max;
		}

		set(min, max) {
			this.min.copy(min);
			this.max.copy(max);
			return this;
		}

		setFromArray(array) {
			let minX = +Infinity;
			let minY = +Infinity;
			let minZ = +Infinity;
			let maxX = -Infinity;
			let maxY = -Infinity;
			let maxZ = -Infinity;

			for (let i = 0, l = array.length; i < l; i += 3) {
				const x = array[i];
				const y = array[i + 1];
				const z = array[i + 2];
				if (x < minX) minX = x;
				if (y < minY) minY = y;
				if (z < minZ) minZ = z;
				if (x > maxX) maxX = x;
				if (y > maxY) maxY = y;
				if (z > maxZ) maxZ = z;
			}

			this.min.set(minX, minY, minZ);
			this.max.set(maxX, maxY, maxZ);
			return this;
		}

		setFromBufferAttribute(attribute) {
			let minX = +Infinity;
			let minY = +Infinity;
			let minZ = +Infinity;
			let maxX = -Infinity;
			let maxY = -Infinity;
			let maxZ = -Infinity;

			for (let i = 0, l = attribute.count; i < l; i++) {
				const x = attribute.getX(i);
				const y = attribute.getY(i);
				const z = attribute.getZ(i);
				if (x < minX) minX = x;
				if (y < minY) minY = y;
				if (z < minZ) minZ = z;
				if (x > maxX) maxX = x;
				if (y > maxY) maxY = y;
				if (z > maxZ) maxZ = z;
			}

			this.min.set(minX, minY, minZ);
			this.max.set(maxX, maxY, maxZ);
			return this;
		}

		setFromPoints(points) {
			this.makeEmpty();

			for (let i = 0, il = points.length; i < il; i++) {
				this.expandByPoint(points[i]);
			}

			return this;
		}

		setFromCenterAndSize(center, size) {
			const halfSize = _vector$b.copy(size).multiplyScalar(0.5);

			this.min.copy(center).sub(halfSize);
			this.max.copy(center).add(halfSize);
			return this;
		}

		setFromObject(object) {
			this.makeEmpty();
			return this.expandByObject(object);
		}

		clone() {
			return new this.constructor().copy(this);
		}

		copy(box) {
			this.min.copy(box.min);
			this.max.copy(box.max);
			return this;
		}

		makeEmpty() {
			this.min.x = this.min.y = this.min.z = +Infinity;
			this.max.x = this.max.y = this.max.z = -Infinity;
			return this;
		}

		isEmpty() {
			// this is a more robust check for empty than ( volume <= 0 ) because volume can get positive with two negative axes
			return this.max.x < this.min.x || this.max.y < this.min.y || this.max.z < this.min.z;
		}

		getCenter(target) {
			return this.isEmpty() ? target.set(0, 0, 0) : target.addVectors(this.min, this.max).multiplyScalar(0.5);
		}

		getSize(target) {
			return this.isEmpty() ? target.set(0, 0, 0) : target.subVectors(this.max, this.min);
		}

		expandByPoint(point) {
			this.min.min(point);
			this.max.max(point);
			return this;
		}

		expandByVector(vector) {
			this.min.sub(vector);
			this.max.add(vector);
			return this;
		}

		expandByScalar(scalar) {
			this.min.addScalar(-scalar);
			this.max.addScalar(scalar);
			return this;
		}

		expandByObject(object) {
			// Computes the world-axis-aligned bounding box of an object (including its children),
			// accounting for both the object's, and children's, world transforms
			object.updateWorldMatrix(false, false);
			const geometry = object.geometry;

			if (geometry !== undefined) {
				if (geometry.boundingBox === null) {
					geometry.computeBoundingBox();
				}

				_box$3.copy(geometry.boundingBox);

				_box$3.applyMatrix4(object.matrixWorld);

				this.union(_box$3);
			}

			const children = object.children;

			for (let i = 0, l = children.length; i < l; i++) {
				this.expandByObject(children[i]);
			}

			return this;
		}

		containsPoint(point) {
			return point.x < this.min.x || point.x > this.max.x || point.y < this.min.y || point.y > this.max.y || point.z < this.min.z || point.z > this.max.z ? false : true;
		}

		containsBox(box) {
			return this.min.x <= box.min.x && box.max.x <= this.max.x && this.min.y <= box.min.y && box.max.y <= this.max.y && this.min.z <= box.min.z && box.max.z <= this.max.z;
		}

		getParameter(point, target) {
			// This can potentially have a divide by zero if the box
			// has a size dimension of 0.
			return target.set((point.x - this.min.x) / (this.max.x - this.min.x), (point.y - this.min.y) / (this.max.y - this.min.y), (point.z - this.min.z) / (this.max.z - this.min.z));
		}

		intersectsBox(box) {
			// using 6 splitting planes to rule out intersections.
			return box.max.x < this.min.x || box.min.x > this.max.x || box.max.y < this.min.y || box.min.y > this.max.y || box.max.z < this.min.z || box.min.z > this.max.z ? false : true;
		}

		intersectsSphere(sphere) {
			// Find the point on the AABB closest to the sphere center.
			this.clampPoint(sphere.center, _vector$b); // If that point is inside the sphere, the AABB and sphere intersect.

			return _vector$b.distanceToSquared(sphere.center) <= sphere.radius * sphere.radius;
		}

		intersectsPlane(plane) {
			// We compute the minimum and maximum dot product values. If those values
			// are on the same side (back or front) of the plane, then there is no intersection.
			let min, max;

			if (plane.normal.x > 0) {
				min = plane.normal.x * this.min.x;
				max = plane.normal.x * this.max.x;
			} else {
				min = plane.normal.x * this.max.x;
				max = plane.normal.x * this.min.x;
			}

			if (plane.normal.y > 0) {
				min += plane.normal.y * this.min.y;
				max += plane.normal.y * this.max.y;
			} else {
				min += plane.normal.y * this.max.y;
				max += plane.normal.y * this.min.y;
			}

			if (plane.normal.z > 0) {
				min += plane.normal.z * this.min.z;
				max += plane.normal.z * this.max.z;
			} else {
				min += plane.normal.z * this.max.z;
				max += plane.normal.z * this.min.z;
			}

			return min <= -plane.constant && max >= -plane.constant;
		}

		intersectsTriangle(triangle) {
			if (this.isEmpty()) {
				return false;
			} // compute box center and extents


			this.getCenter(_center);

			_extents.subVectors(this.max, _center); // translate triangle to aabb origin


			_v0$2.subVectors(triangle.a, _center);

			_v1$7.subVectors(triangle.b, _center);

			_v2$3.subVectors(triangle.c, _center); // compute edge vectors for triangle


			_f0.subVectors(_v1$7, _v0$2);

			_f1.subVectors(_v2$3, _v1$7);

			_f2.subVectors(_v0$2, _v2$3); // test against axes that are given by cross product combinations of the edges of the triangle and the edges of the aabb
			// make an axis testing of each of the 3 sides of the aabb against each of the 3 sides of the triangle = 9 axis of separation
			// axis_ij = u_i x f_j (u0, u1, u2 = face normals of aabb = x,y,z axes vectors since aabb is axis aligned)


			let axes = [0, -_f0.z, _f0.y, 0, -_f1.z, _f1.y, 0, -_f2.z, _f2.y, _f0.z, 0, -_f0.x, _f1.z, 0, -_f1.x, _f2.z, 0, -_f2.x, -_f0.y, _f0.x, 0, -_f1.y, _f1.x, 0, -_f2.y, _f2.x, 0];

			if (!satForAxes(axes, _v0$2, _v1$7, _v2$3, _extents)) {
				return false;
			} // test 3 face normals from the aabb


			axes = [1, 0, 0, 0, 1, 0, 0, 0, 1];

			if (!satForAxes(axes, _v0$2, _v1$7, _v2$3, _extents)) {
				return false;
			} // finally testing the face normal of the triangle
			// use already existing triangle edge vectors here


			_triangleNormal.crossVectors(_f0, _f1);

			axes = [_triangleNormal.x, _triangleNormal.y, _triangleNormal.z];
			return satForAxes(axes, _v0$2, _v1$7, _v2$3, _extents);
		}

		clampPoint(point, target) {
			return target.copy(point).clamp(this.min, this.max);
		}

		distanceToPoint(point) {
			const clampedPoint = _vector$b.copy(point).clamp(this.min, this.max);

			return clampedPoint.sub(point).length();
		}

		getBoundingSphere(target) {
			this.getCenter(target.center);
			target.radius = this.getSize(_vector$b).length() * 0.5;
			return target;
		}

		intersect(box) {
			this.min.max(box.min);
			this.max.min(box.max); // ensure that if there is no overlap, the result is fully empty, not slightly empty with non-inf/+inf values that will cause subsequence intersects to erroneously return valid values.

			if (this.isEmpty()) this.makeEmpty();
			return this;
		}

		union(box) {
			this.min.min(box.min);
			this.max.max(box.max);
			return this;
		}

		applyMatrix4(matrix) {
			// transform of empty box is an empty box.
			if (this.isEmpty()) return this; // NOTE: I am using a binary pattern to specify all 2^3 combinations below

			_points[0].set(this.min.x, this.min.y, this.min.z).applyMatrix4(matrix); // 000


			_points[1].set(this.min.x, this.min.y, this.max.z).applyMatrix4(matrix); // 001


			_points[2].set(this.min.x, this.max.y, this.min.z).applyMatrix4(matrix); // 010


			_points[3].set(this.min.x, this.max.y, this.max.z).applyMatrix4(matrix); // 011


			_points[4].set(this.max.x, this.min.y, this.min.z).applyMatrix4(matrix); // 100


			_points[5].set(this.max.x, this.min.y, this.max.z).applyMatrix4(matrix); // 101


			_points[6].set(this.max.x, this.max.y, this.min.z).applyMatrix4(matrix); // 110


			_points[7].set(this.max.x, this.max.y, this.max.z).applyMatrix4(matrix); // 111


			this.setFromPoints(_points);
			return this;
		}

		translate(offset) {
			this.min.add(offset);
			this.max.add(offset);
			return this;
		}

		equals(box) {
			return box.min.equals(this.min) && box.max.equals(this.max);
		}

	}

	Box3.prototype.isBox3 = true;
	const _points = [/*@__PURE__*/new Vector3(), /*@__PURE__*/new Vector3(), /*@__PURE__*/new Vector3(), /*@__PURE__*/new Vector3(), /*@__PURE__*/new Vector3(), /*@__PURE__*/new Vector3(), /*@__PURE__*/new Vector3(), /*@__PURE__*/new Vector3()];

	const _vector$b = /*@__PURE__*/new Vector3();

	const _box$3 = /*@__PURE__*/new Box3(); // triangle centered vertices


	const _v0$2 = /*@__PURE__*/new Vector3();

	const _v1$7 = /*@__PURE__*/new Vector3();

	const _v2$3 = /*@__PURE__*/new Vector3(); // triangle edge vectors


	const _f0 = /*@__PURE__*/new Vector3();

	const _f1 = /*@__PURE__*/new Vector3();

	const _f2 = /*@__PURE__*/new Vector3();

	const _center = /*@__PURE__*/new Vector3();

	const _extents = /*@__PURE__*/new Vector3();

	const _triangleNormal = /*@__PURE__*/new Vector3();

	const _testAxis = /*@__PURE__*/new Vector3();

	function satForAxes(axes, v0, v1, v2, extents) {
		for (let i = 0, j = axes.length - 3; i <= j; i += 3) {
			_testAxis.fromArray(axes, i); // project the aabb onto the seperating axis


			const r = extents.x * Math.abs(_testAxis.x) + extents.y * Math.abs(_testAxis.y) + extents.z * Math.abs(_testAxis.z); // project all 3 vertices of the triangle onto the seperating axis

			const p0 = v0.dot(_testAxis);
			const p1 = v1.dot(_testAxis);
			const p2 = v2.dot(_testAxis); // actual test, basically see if either of the most extreme of the triangle points intersects r

			if (Math.max(-Math.max(p0, p1, p2), Math.min(p0, p1, p2)) > r) {
				// points of the projected triangle are outside the projected half-length of the aabb
				// the axis is seperating and we can exit
				return false;
			}
		}

		return true;
	}

	const _box$2 = /*@__PURE__*/new Box3();

	const _v1$6 = /*@__PURE__*/new Vector3();

	const _toFarthestPoint = /*@__PURE__*/new Vector3();

	const _toPoint = /*@__PURE__*/new Vector3();

	class Sphere {
		constructor(center = new Vector3(), radius = -1) {
			this.center = center;
			this.radius = radius;
		}

		set(center, radius) {
			this.center.copy(center);
			this.radius = radius;
			return this;
		}

		setFromPoints(points, optionalCenter) {
			const center = this.center;

			if (optionalCenter !== undefined) {
				center.copy(optionalCenter);
			} else {
				_box$2.setFromPoints(points).getCenter(center);
			}

			let maxRadiusSq = 0;

			for (let i = 0, il = points.length; i < il; i++) {
				maxRadiusSq = Math.max(maxRadiusSq, center.distanceToSquared(points[i]));
			}

			this.radius = Math.sqrt(maxRadiusSq);
			return this;
		}

		copy(sphere) {
			this.center.copy(sphere.center);
			this.radius = sphere.radius;
			return this;
		}

		isEmpty() {
			return this.radius < 0;
		}

		makeEmpty() {
			this.center.set(0, 0, 0);
			this.radius = -1;
			return this;
		}

		containsPoint(point) {
			return point.distanceToSquared(this.center) <= this.radius * this.radius;
		}

		distanceToPoint(point) {
			return point.distanceTo(this.center) - this.radius;
		}

		intersectsSphere(sphere) {
			const radiusSum = this.radius + sphere.radius;
			return sphere.center.distanceToSquared(this.center) <= radiusSum * radiusSum;
		}

		intersectsBox(box) {
			return box.intersectsSphere(this);
		}

		intersectsPlane(plane) {
			return Math.abs(plane.distanceToPoint(this.center)) <= this.radius;
		}

		clampPoint(point, target) {
			const deltaLengthSq = this.center.distanceToSquared(point);
			target.copy(point);

			if (deltaLengthSq > this.radius * this.radius) {
				target.sub(this.center).normalize();
				target.multiplyScalar(this.radius).add(this.center);
			}

			return target;
		}

		getBoundingBox(target) {
			if (this.isEmpty()) {
				// Empty sphere produces empty bounding box
				target.makeEmpty();
				return target;
			}

			target.set(this.center, this.center);
			target.expandByScalar(this.radius);
			return target;
		}

		applyMatrix4(matrix) {
			this.center.applyMatrix4(matrix);
			this.radius = this.radius * matrix.getMaxScaleOnAxis();
			return this;
		}

		translate(offset) {
			this.center.add(offset);
			return this;
		}

		expandByPoint(point) {
			// from https://github.com/juj/MathGeoLib/blob/2940b99b99cfe575dd45103ef20f4019dee15b54/src/Geometry/Sphere.cpp#L649-L671
			_toPoint.subVectors(point, this.center);

			const lengthSq = _toPoint.lengthSq();

			if (lengthSq > this.radius * this.radius) {
				const length = Math.sqrt(lengthSq);
				const missingRadiusHalf = (length - this.radius) * 0.5; // Nudge this sphere towards the target point. Add half the missing distance to radius,
				// and the other half to position. This gives a tighter enclosure, instead of if
				// the whole missing distance were just added to radius.

				this.center.add(_toPoint.multiplyScalar(missingRadiusHalf / length));
				this.radius += missingRadiusHalf;
			}

			return this;
		}

		union(sphere) {
			// from https://github.com/juj/MathGeoLib/blob/2940b99b99cfe575dd45103ef20f4019dee15b54/src/Geometry/Sphere.cpp#L759-L769
			// To enclose another sphere into this sphere, we only need to enclose two points:
			// 1) Enclose the farthest point on the other sphere into this sphere.
			// 2) Enclose the opposite point of the farthest point into this sphere.
			_toFarthestPoint.subVectors(sphere.center, this.center).normalize().multiplyScalar(sphere.radius);

			this.expandByPoint(_v1$6.copy(sphere.center).add(_toFarthestPoint));
			this.expandByPoint(_v1$6.copy(sphere.center).sub(_toFarthestPoint));
			return this;
		}

		equals(sphere) {
			return sphere.center.equals(this.center) && sphere.radius === this.radius;
		}

		clone() {
			return new this.constructor().copy(this);
		}

	}

	const _vector$a = /*@__PURE__*/new Vector3();

	const _segCenter = /*@__PURE__*/new Vector3();

	const _segDir = /*@__PURE__*/new Vector3();

	const _diff = /*@__PURE__*/new Vector3();

	const _edge1 = /*@__PURE__*/new Vector3();

	const _edge2 = /*@__PURE__*/new Vector3();

	const _normal$1 = /*@__PURE__*/new Vector3();

	class Ray {
		constructor(origin = new Vector3(), direction = new Vector3(0, 0, -1)) {
			this.origin = origin;
			this.direction = direction;
		}

		set(origin, direction) {
			this.origin.copy(origin);
			this.direction.copy(direction);
			return this;
		}

		copy(ray) {
			this.origin.copy(ray.origin);
			this.direction.copy(ray.direction);
			return this;
		}

		at(t, target) {
			return target.copy(this.direction).multiplyScalar(t).add(this.origin);
		}

		lookAt(v) {
			this.direction.copy(v).sub(this.origin).normalize();
			return this;
		}

		recast(t) {
			this.origin.copy(this.at(t, _vector$a));
			return this;
		}

		closestPointToPoint(point, target) {
			target.subVectors(point, this.origin);
			const directionDistance = target.dot(this.direction);

			if (directionDistance < 0) {
				return target.copy(this.origin);
			}

			return target.copy(this.direction).multiplyScalar(directionDistance).add(this.origin);
		}

		distanceToPoint(point) {
			return Math.sqrt(this.distanceSqToPoint(point));
		}

		distanceSqToPoint(point) {
			const directionDistance = _vector$a.subVectors(point, this.origin).dot(this.direction); // point behind the ray


			if (directionDistance < 0) {
				return this.origin.distanceToSquared(point);
			}

			_vector$a.copy(this.direction).multiplyScalar(directionDistance).add(this.origin);

			return _vector$a.distanceToSquared(point);
		}

		distanceSqToSegment(v0, v1, optionalPointOnRay, optionalPointOnSegment) {
			// from http://www.geometrictools.com/GTEngine/Include/Mathematics/GteDistRaySegment.h
			// It returns the min distance between the ray and the segment
			// defined by v0 and v1
			// It can also set two optional targets :
			// - The closest point on the ray
			// - The closest point on the segment
			_segCenter.copy(v0).add(v1).multiplyScalar(0.5);

			_segDir.copy(v1).sub(v0).normalize();

			_diff.copy(this.origin).sub(_segCenter);

			const segExtent = v0.distanceTo(v1) * 0.5;
			const a01 = -this.direction.dot(_segDir);

			const b0 = _diff.dot(this.direction);

			const b1 = -_diff.dot(_segDir);

			const c = _diff.lengthSq();

			const det = Math.abs(1 - a01 * a01);
			let s0, s1, sqrDist, extDet;

			if (det > 0) {
				// The ray and segment are not parallel.
				s0 = a01 * b1 - b0;
				s1 = a01 * b0 - b1;
				extDet = segExtent * det;

				if (s0 >= 0) {
					if (s1 >= -extDet) {
						if (s1 <= extDet) {
							// region 0
							// Minimum at interior points of ray and segment.
							const invDet = 1 / det;
							s0 *= invDet;
							s1 *= invDet;
							sqrDist = s0 * (s0 + a01 * s1 + 2 * b0) + s1 * (a01 * s0 + s1 + 2 * b1) + c;
						} else {
							// region 1
							s1 = segExtent;
							s0 = Math.max(0, -(a01 * s1 + b0));
							sqrDist = -s0 * s0 + s1 * (s1 + 2 * b1) + c;
						}
					} else {
						// region 5
						s1 = -segExtent;
						s0 = Math.max(0, -(a01 * s1 + b0));
						sqrDist = -s0 * s0 + s1 * (s1 + 2 * b1) + c;
					}
				} else {
					if (s1 <= -extDet) {
						// region 4
						s0 = Math.max(0, -(-a01 * segExtent + b0));
						s1 = s0 > 0 ? -segExtent : Math.min(Math.max(-segExtent, -b1), segExtent);
						sqrDist = -s0 * s0 + s1 * (s1 + 2 * b1) + c;
					} else if (s1 <= extDet) {
						// region 3
						s0 = 0;
						s1 = Math.min(Math.max(-segExtent, -b1), segExtent);
						sqrDist = s1 * (s1 + 2 * b1) + c;
					} else {
						// region 2
						s0 = Math.max(0, -(a01 * segExtent + b0));
						s1 = s0 > 0 ? segExtent : Math.min(Math.max(-segExtent, -b1), segExtent);
						sqrDist = -s0 * s0 + s1 * (s1 + 2 * b1) + c;
					}
				}
			} else {
				// Ray and segment are parallel.
				s1 = a01 > 0 ? -segExtent : segExtent;
				s0 = Math.max(0, -(a01 * s1 + b0));
				sqrDist = -s0 * s0 + s1 * (s1 + 2 * b1) + c;
			}

			if (optionalPointOnRay) {
				optionalPointOnRay.copy(this.direction).multiplyScalar(s0).add(this.origin);
			}

			if (optionalPointOnSegment) {
				optionalPointOnSegment.copy(_segDir).multiplyScalar(s1).add(_segCenter);
			}

			return sqrDist;
		}

		intersectSphere(sphere, target) {
			_vector$a.subVectors(sphere.center, this.origin);

			const tca = _vector$a.dot(this.direction);

			const d2 = _vector$a.dot(_vector$a) - tca * tca;
			const radius2 = sphere.radius * sphere.radius;
			if (d2 > radius2) return null;
			const thc = Math.sqrt(radius2 - d2); // t0 = first intersect point - entrance on front of sphere

			const t0 = tca - thc; // t1 = second intersect point - exit point on back of sphere

			const t1 = tca + thc; // test to see if both t0 and t1 are behind the ray - if so, return null

			if (t0 < 0 && t1 < 0) return null; // test to see if t0 is behind the ray:
			// if it is, the ray is inside the sphere, so return the second exit point scaled by t1,
			// in order to always return an intersect point that is in front of the ray.

			if (t0 < 0) return this.at(t1, target); // else t0 is in front of the ray, so return the first collision point scaled by t0

			return this.at(t0, target);
		}

		intersectsSphere(sphere) {
			return this.distanceSqToPoint(sphere.center) <= sphere.radius * sphere.radius;
		}

		distanceToPlane(plane) {
			const denominator = plane.normal.dot(this.direction);

			if (denominator === 0) {
				// line is coplanar, return origin
				if (plane.distanceToPoint(this.origin) === 0) {
					return 0;
				} // Null is preferable to undefined since undefined means.... it is undefined


				return null;
			}

			const t = -(this.origin.dot(plane.normal) + plane.constant) / denominator; // Return if the ray never intersects the plane

			return t >= 0 ? t : null;
		}

		intersectPlane(plane, target) {
			const t = this.distanceToPlane(plane);

			if (t === null) {
				return null;
			}

			return this.at(t, target);
		}

		intersectsPlane(plane) {
			// check if the ray lies on the plane first
			const distToPoint = plane.distanceToPoint(this.origin);

			if (distToPoint === 0) {
				return true;
			}

			const denominator = plane.normal.dot(this.direction);

			if (denominator * distToPoint < 0) {
				return true;
			} // ray origin is behind the plane (and is pointing behind it)


			return false;
		}

		intersectBox(box, target) {
			let tmin, tmax, tymin, tymax, tzmin, tzmax;
			const invdirx = 1 / this.direction.x,
						invdiry = 1 / this.direction.y,
						invdirz = 1 / this.direction.z;
			const origin = this.origin;

			if (invdirx >= 0) {
				tmin = (box.min.x - origin.x) * invdirx;
				tmax = (box.max.x - origin.x) * invdirx;
			} else {
				tmin = (box.max.x - origin.x) * invdirx;
				tmax = (box.min.x - origin.x) * invdirx;
			}

			if (invdiry >= 0) {
				tymin = (box.min.y - origin.y) * invdiry;
				tymax = (box.max.y - origin.y) * invdiry;
			} else {
				tymin = (box.max.y - origin.y) * invdiry;
				tymax = (box.min.y - origin.y) * invdiry;
			}

			if (tmin > tymax || tymin > tmax) return null; // These lines also handle the case where tmin or tmax is NaN
			// (result of 0 * Infinity). x !== x returns true if x is NaN

			if (tymin > tmin || tmin !== tmin) tmin = tymin;
			if (tymax < tmax || tmax !== tmax) tmax = tymax;

			if (invdirz >= 0) {
				tzmin = (box.min.z - origin.z) * invdirz;
				tzmax = (box.max.z - origin.z) * invdirz;
			} else {
				tzmin = (box.max.z - origin.z) * invdirz;
				tzmax = (box.min.z - origin.z) * invdirz;
			}

			if (tmin > tzmax || tzmin > tmax) return null;
			if (tzmin > tmin || tmin !== tmin) tmin = tzmin;
			if (tzmax < tmax || tmax !== tmax) tmax = tzmax; //return point closest to the ray (positive side)

			if (tmax < 0) return null;
			return this.at(tmin >= 0 ? tmin : tmax, target);
		}

		intersectsBox(box) {
			return this.intersectBox(box, _vector$a) !== null;
		}

		intersectTriangle(a, b, c, backfaceCulling, target) {
			// Compute the offset origin, edges, and normal.
			// from http://www.geometrictools.com/GTEngine/Include/Mathematics/GteIntrRay3Triangle3.h
			_edge1.subVectors(b, a);

			_edge2.subVectors(c, a);

			_normal$1.crossVectors(_edge1, _edge2); // Solve Q + t*D = b1*E1 + b2*E2 (Q = kDiff, D = ray direction,
			// E1 = kEdge1, E2 = kEdge2, N = Cross(E1,E2)) by
			//	 |Dot(D,N)|*b1 = sign(Dot(D,N))*Dot(D,Cross(Q,E2))
			//	 |Dot(D,N)|*b2 = sign(Dot(D,N))*Dot(D,Cross(E1,Q))
			//	 |Dot(D,N)|*t = -sign(Dot(D,N))*Dot(Q,N)


			let DdN = this.direction.dot(_normal$1);
			let sign;

			if (DdN > 0) {
				if (backfaceCulling) return null;
				sign = 1;
			} else if (DdN < 0) {
				sign = -1;
				DdN = -DdN;
			} else {
				return null;
			}

			_diff.subVectors(this.origin, a);

			const DdQxE2 = sign * this.direction.dot(_edge2.crossVectors(_diff, _edge2)); // b1 < 0, no intersection

			if (DdQxE2 < 0) {
				return null;
			}

			const DdE1xQ = sign * this.direction.dot(_edge1.cross(_diff)); // b2 < 0, no intersection

			if (DdE1xQ < 0) {
				return null;
			} // b1+b2 > 1, no intersection


			if (DdQxE2 + DdE1xQ > DdN) {
				return null;
			} // Line intersects triangle, check if ray does.


			const QdN = -sign * _diff.dot(_normal$1); // t < 0, no intersection


			if (QdN < 0) {
				return null;
			} // Ray intersects triangle.


			return this.at(QdN / DdN, target);
		}

		applyMatrix4(matrix4) {
			this.origin.applyMatrix4(matrix4);
			this.direction.transformDirection(matrix4);
			return this;
		}

		equals(ray) {
			return ray.origin.equals(this.origin) && ray.direction.equals(this.direction);
		}

		clone() {
			return new this.constructor().copy(this);
		}

	}

	class Matrix4 {
		constructor() {
			this.elements = [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1];

			if (arguments.length > 0) {
				console.error('THREE.Matrix4: the constructor no longer reads arguments. use .set() instead.');
			}
		}

		set(n11, n12, n13, n14, n21, n22, n23, n24, n31, n32, n33, n34, n41, n42, n43, n44) {
			const te = this.elements;
			te[0] = n11;
			te[4] = n12;
			te[8] = n13;
			te[12] = n14;
			te[1] = n21;
			te[5] = n22;
			te[9] = n23;
			te[13] = n24;
			te[2] = n31;
			te[6] = n32;
			te[10] = n33;
			te[14] = n34;
			te[3] = n41;
			te[7] = n42;
			te[11] = n43;
			te[15] = n44;
			return this;
		}

		identity() {
			this.set(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
			return this;
		}

		clone() {
			return new Matrix4().fromArray(this.elements);
		}

		copy(m) {
			const te = this.elements;
			const me = m.elements;
			te[0] = me[0];
			te[1] = me[1];
			te[2] = me[2];
			te[3] = me[3];
			te[4] = me[4];
			te[5] = me[5];
			te[6] = me[6];
			te[7] = me[7];
			te[8] = me[8];
			te[9] = me[9];
			te[10] = me[10];
			te[11] = me[11];
			te[12] = me[12];
			te[13] = me[13];
			te[14] = me[14];
			te[15] = me[15];
			return this;
		}

		copyPosition(m) {
			const te = this.elements,
						me = m.elements;
			te[12] = me[12];
			te[13] = me[13];
			te[14] = me[14];
			return this;
		}

		setFromMatrix3(m) {
			const me = m.elements;
			this.set(me[0], me[3], me[6], 0, me[1], me[4], me[7], 0, me[2], me[5], me[8], 0, 0, 0, 0, 1);
			return this;
		}

		extractBasis(xAxis, yAxis, zAxis) {
			xAxis.setFromMatrixColumn(this, 0);
			yAxis.setFromMatrixColumn(this, 1);
			zAxis.setFromMatrixColumn(this, 2);
			return this;
		}

		makeBasis(xAxis, yAxis, zAxis) {
			this.set(xAxis.x, yAxis.x, zAxis.x, 0, xAxis.y, yAxis.y, zAxis.y, 0, xAxis.z, yAxis.z, zAxis.z, 0, 0, 0, 0, 1);
			return this;
		}

		extractRotation(m) {
			// this method does not support reflection matrices
			const te = this.elements;
			const me = m.elements;

			const scaleX = 1 / _v1$5.setFromMatrixColumn(m, 0).length();

			const scaleY = 1 / _v1$5.setFromMatrixColumn(m, 1).length();

			const scaleZ = 1 / _v1$5.setFromMatrixColumn(m, 2).length();

			te[0] = me[0] * scaleX;
			te[1] = me[1] * scaleX;
			te[2] = me[2] * scaleX;
			te[3] = 0;
			te[4] = me[4] * scaleY;
			te[5] = me[5] * scaleY;
			te[6] = me[6] * scaleY;
			te[7] = 0;
			te[8] = me[8] * scaleZ;
			te[9] = me[9] * scaleZ;
			te[10] = me[10] * scaleZ;
			te[11] = 0;
			te[12] = 0;
			te[13] = 0;
			te[14] = 0;
			te[15] = 1;
			return this;
		}

		makeRotationFromEuler(euler) {
			if (!(euler && euler.isEuler)) {
				console.error('THREE.Matrix4: .makeRotationFromEuler() now expects a Euler rotation rather than a Vector3 and order.');
			}

			const te = this.elements;
			const x = euler.x,
						y = euler.y,
						z = euler.z;
			const a = Math.cos(x),
						b = Math.sin(x);
			const c = Math.cos(y),
						d = Math.sin(y);
			const e = Math.cos(z),
						f = Math.sin(z);

			if (euler.order === 'XYZ') {
				const ae = a * e,
							af = a * f,
							be = b * e,
							bf = b * f;
				te[0] = c * e;
				te[4] = -c * f;
				te[8] = d;
				te[1] = af + be * d;
				te[5] = ae - bf * d;
				te[9] = -b * c;
				te[2] = bf - ae * d;
				te[6] = be + af * d;
				te[10] = a * c;
			} else if (euler.order === 'YXZ') {
				const ce = c * e,
							cf = c * f,
							de = d * e,
							df = d * f;
				te[0] = ce + df * b;
				te[4] = de * b - cf;
				te[8] = a * d;
				te[1] = a * f;
				te[5] = a * e;
				te[9] = -b;
				te[2] = cf * b - de;
				te[6] = df + ce * b;
				te[10] = a * c;
			} else if (euler.order === 'ZXY') {
				const ce = c * e,
							cf = c * f,
							de = d * e,
							df = d * f;
				te[0] = ce - df * b;
				te[4] = -a * f;
				te[8] = de + cf * b;
				te[1] = cf + de * b;
				te[5] = a * e;
				te[9] = df - ce * b;
				te[2] = -a * d;
				te[6] = b;
				te[10] = a * c;
			} else if (euler.order === 'ZYX') {
				const ae = a * e,
							af = a * f,
							be = b * e,
							bf = b * f;
				te[0] = c * e;
				te[4] = be * d - af;
				te[8] = ae * d + bf;
				te[1] = c * f;
				te[5] = bf * d + ae;
				te[9] = af * d - be;
				te[2] = -d;
				te[6] = b * c;
				te[10] = a * c;
			} else if (euler.order === 'YZX') {
				const ac = a * c,
							ad = a * d,
							bc = b * c,
							bd = b * d;
				te[0] = c * e;
				te[4] = bd - ac * f;
				te[8] = bc * f + ad;
				te[1] = f;
				te[5] = a * e;
				te[9] = -b * e;
				te[2] = -d * e;
				te[6] = ad * f + bc;
				te[10] = ac - bd * f;
			} else if (euler.order === 'XZY') {
				const ac = a * c,
							ad = a * d,
							bc = b * c,
							bd = b * d;
				te[0] = c * e;
				te[4] = -f;
				te[8] = d * e;
				te[1] = ac * f + bd;
				te[5] = a * e;
				te[9] = ad * f - bc;
				te[2] = bc * f - ad;
				te[6] = b * e;
				te[10] = bd * f + ac;
			} // bottom row


			te[3] = 0;
			te[7] = 0;
			te[11] = 0; // last column

			te[12] = 0;
			te[13] = 0;
			te[14] = 0;
			te[15] = 1;
			return this;
		}

		makeRotationFromQuaternion(q) {
			return this.compose(_zero, q, _one);
		}

		lookAt(eye, target, up) {
			const te = this.elements;

			_z.subVectors(eye, target);

			if (_z.lengthSq() === 0) {
				// eye and target are in the same position
				_z.z = 1;
			}

			_z.normalize();

			_x.crossVectors(up, _z);

			if (_x.lengthSq() === 0) {
				// up and z are parallel
				if (Math.abs(up.z) === 1) {
					_z.x += 0.0001;
				} else {
					_z.z += 0.0001;
				}

				_z.normalize();

				_x.crossVectors(up, _z);
			}

			_x.normalize();

			_y.crossVectors(_z, _x);

			te[0] = _x.x;
			te[4] = _y.x;
			te[8] = _z.x;
			te[1] = _x.y;
			te[5] = _y.y;
			te[9] = _z.y;
			te[2] = _x.z;
			te[6] = _y.z;
			te[10] = _z.z;
			return this;
		}

		multiply(m, n) {
			if (n !== undefined) {
				console.warn('THREE.Matrix4: .multiply() now only accepts one argument. Use .multiplyMatrices( a, b ) instead.');
				return this.multiplyMatrices(m, n);
			}

			return this.multiplyMatrices(this, m);
		}

		premultiply(m) {
			return this.multiplyMatrices(m, this);
		}

		multiplyMatrices(a, b) {
			const ae = a.elements;
			const be = b.elements;
			const te = this.elements;
			const a11 = ae[0],
						a12 = ae[4],
						a13 = ae[8],
						a14 = ae[12];
			const a21 = ae[1],
						a22 = ae[5],
						a23 = ae[9],
						a24 = ae[13];
			const a31 = ae[2],
						a32 = ae[6],
						a33 = ae[10],
						a34 = ae[14];
			const a41 = ae[3],
						a42 = ae[7],
						a43 = ae[11],
						a44 = ae[15];
			const b11 = be[0],
						b12 = be[4],
						b13 = be[8],
						b14 = be[12];
			const b21 = be[1],
						b22 = be[5],
						b23 = be[9],
						b24 = be[13];
			const b31 = be[2],
						b32 = be[6],
						b33 = be[10],
						b34 = be[14];
			const b41 = be[3],
						b42 = be[7],
						b43 = be[11],
						b44 = be[15];
			te[0] = a11 * b11 + a12 * b21 + a13 * b31 + a14 * b41;
			te[4] = a11 * b12 + a12 * b22 + a13 * b32 + a14 * b42;
			te[8] = a11 * b13 + a12 * b23 + a13 * b33 + a14 * b43;
			te[12] = a11 * b14 + a12 * b24 + a13 * b34 + a14 * b44;
			te[1] = a21 * b11 + a22 * b21 + a23 * b31 + a24 * b41;
			te[5] = a21 * b12 + a22 * b22 + a23 * b32 + a24 * b42;
			te[9] = a21 * b13 + a22 * b23 + a23 * b33 + a24 * b43;
			te[13] = a21 * b14 + a22 * b24 + a23 * b34 + a24 * b44;
			te[2] = a31 * b11 + a32 * b21 + a33 * b31 + a34 * b41;
			te[6] = a31 * b12 + a32 * b22 + a33 * b32 + a34 * b42;
			te[10] = a31 * b13 + a32 * b23 + a33 * b33 + a34 * b43;
			te[14] = a31 * b14 + a32 * b24 + a33 * b34 + a34 * b44;
			te[3] = a41 * b11 + a42 * b21 + a43 * b31 + a44 * b41;
			te[7] = a41 * b12 + a42 * b22 + a43 * b32 + a44 * b42;
			te[11] = a41 * b13 + a42 * b23 + a43 * b33 + a44 * b43;
			te[15] = a41 * b14 + a42 * b24 + a43 * b34 + a44 * b44;
			return this;
		}

		multiplyScalar(s) {
			const te = this.elements;
			te[0] *= s;
			te[4] *= s;
			te[8] *= s;
			te[12] *= s;
			te[1] *= s;
			te[5] *= s;
			te[9] *= s;
			te[13] *= s;
			te[2] *= s;
			te[6] *= s;
			te[10] *= s;
			te[14] *= s;
			te[3] *= s;
			te[7] *= s;
			te[11] *= s;
			te[15] *= s;
			return this;
		}

		determinant() {
			const te = this.elements;
			const n11 = te[0],
						n12 = te[4],
						n13 = te[8],
						n14 = te[12];
			const n21 = te[1],
						n22 = te[5],
						n23 = te[9],
						n24 = te[13];
			const n31 = te[2],
						n32 = te[6],
						n33 = te[10],
						n34 = te[14];
			const n41 = te[3],
						n42 = te[7],
						n43 = te[11],
						n44 = te[15]; //TODO: make this more efficient
			//( based on http://www.euclideanspace.com/maths/algebra/matrix/functions/inverse/fourD/index.htm )

			return n41 * (+n14 * n23 * n32 - n13 * n24 * n32 - n14 * n22 * n33 + n12 * n24 * n33 + n13 * n22 * n34 - n12 * n23 * n34) + n42 * (+n11 * n23 * n34 - n11 * n24 * n33 + n14 * n21 * n33 - n13 * n21 * n34 + n13 * n24 * n31 - n14 * n23 * n31) + n43 * (+n11 * n24 * n32 - n11 * n22 * n34 - n14 * n21 * n32 + n12 * n21 * n34 + n14 * n22 * n31 - n12 * n24 * n31) + n44 * (-n13 * n22 * n31 - n11 * n23 * n32 + n11 * n22 * n33 + n13 * n21 * n32 - n12 * n21 * n33 + n12 * n23 * n31);
		}

		transpose() {
			const te = this.elements;
			let tmp;
			tmp = te[1];
			te[1] = te[4];
			te[4] = tmp;
			tmp = te[2];
			te[2] = te[8];
			te[8] = tmp;
			tmp = te[6];
			te[6] = te[9];
			te[9] = tmp;
			tmp = te[3];
			te[3] = te[12];
			te[12] = tmp;
			tmp = te[7];
			te[7] = te[13];
			te[13] = tmp;
			tmp = te[11];
			te[11] = te[14];
			te[14] = tmp;
			return this;
		}

		setPosition(x, y, z) {
			const te = this.elements;

			if (x.isVector3) {
				te[12] = x.x;
				te[13] = x.y;
				te[14] = x.z;
			} else {
				te[12] = x;
				te[13] = y;
				te[14] = z;
			}

			return this;
		}

		invert() {
			// based on http://www.euclideanspace.com/maths/algebra/matrix/functions/inverse/fourD/index.htm
			const te = this.elements,
						n11 = te[0],
						n21 = te[1],
						n31 = te[2],
						n41 = te[3],
						n12 = te[4],
						n22 = te[5],
						n32 = te[6],
						n42 = te[7],
						n13 = te[8],
						n23 = te[9],
						n33 = te[10],
						n43 = te[11],
						n14 = te[12],
						n24 = te[13],
						n34 = te[14],
						n44 = te[15],
						t11 = n23 * n34 * n42 - n24 * n33 * n42 + n24 * n32 * n43 - n22 * n34 * n43 - n23 * n32 * n44 + n22 * n33 * n44,
						t12 = n14 * n33 * n42 - n13 * n34 * n42 - n14 * n32 * n43 + n12 * n34 * n43 + n13 * n32 * n44 - n12 * n33 * n44,
						t13 = n13 * n24 * n42 - n14 * n23 * n42 + n14 * n22 * n43 - n12 * n24 * n43 - n13 * n22 * n44 + n12 * n23 * n44,
						t14 = n14 * n23 * n32 - n13 * n24 * n32 - n14 * n22 * n33 + n12 * n24 * n33 + n13 * n22 * n34 - n12 * n23 * n34;
			const det = n11 * t11 + n21 * t12 + n31 * t13 + n41 * t14;
			if (det === 0) return this.set(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
			const detInv = 1 / det;
			te[0] = t11 * detInv;
			te[1] = (n24 * n33 * n41 - n23 * n34 * n41 - n24 * n31 * n43 + n21 * n34 * n43 + n23 * n31 * n44 - n21 * n33 * n44) * detInv;
			te[2] = (n22 * n34 * n41 - n24 * n32 * n41 + n24 * n31 * n42 - n21 * n34 * n42 - n22 * n31 * n44 + n21 * n32 * n44) * detInv;
			te[3] = (n23 * n32 * n41 - n22 * n33 * n41 - n23 * n31 * n42 + n21 * n33 * n42 + n22 * n31 * n43 - n21 * n32 * n43) * detInv;
			te[4] = t12 * detInv;
			te[5] = (n13 * n34 * n41 - n14 * n33 * n41 + n14 * n31 * n43 - n11 * n34 * n43 - n13 * n31 * n44 + n11 * n33 * n44) * detInv;
			te[6] = (n14 * n32 * n41 - n12 * n34 * n41 - n14 * n31 * n42 + n11 * n34 * n42 + n12 * n31 * n44 - n11 * n32 * n44) * detInv;
			te[7] = (n12 * n33 * n41 - n13 * n32 * n41 + n13 * n31 * n42 - n11 * n33 * n42 - n12 * n31 * n43 + n11 * n32 * n43) * detInv;
			te[8] = t13 * detInv;
			te[9] = (n14 * n23 * n41 - n13 * n24 * n41 - n14 * n21 * n43 + n11 * n24 * n43 + n13 * n21 * n44 - n11 * n23 * n44) * detInv;
			te[10] = (n12 * n24 * n41 - n14 * n22 * n41 + n14 * n21 * n42 - n11 * n24 * n42 - n12 * n21 * n44 + n11 * n22 * n44) * detInv;
			te[11] = (n13 * n22 * n41 - n12 * n23 * n41 - n13 * n21 * n42 + n11 * n23 * n42 + n12 * n21 * n43 - n11 * n22 * n43) * detInv;
			te[12] = t14 * detInv;
			te[13] = (n13 * n24 * n31 - n14 * n23 * n31 + n14 * n21 * n33 - n11 * n24 * n33 - n13 * n21 * n34 + n11 * n23 * n34) * detInv;
			te[14] = (n14 * n22 * n31 - n12 * n24 * n31 - n14 * n21 * n32 + n11 * n24 * n32 + n12 * n21 * n34 - n11 * n22 * n34) * detInv;
			te[15] = (n12 * n23 * n31 - n13 * n22 * n31 + n13 * n21 * n32 - n11 * n23 * n32 - n12 * n21 * n33 + n11 * n22 * n33) * detInv;
			return this;
		}

		scale(v) {
			const te = this.elements;
			const x = v.x,
						y = v.y,
						z = v.z;
			te[0] *= x;
			te[4] *= y;
			te[8] *= z;
			te[1] *= x;
			te[5] *= y;
			te[9] *= z;
			te[2] *= x;
			te[6] *= y;
			te[10] *= z;
			te[3] *= x;
			te[7] *= y;
			te[11] *= z;
			return this;
		}

		getMaxScaleOnAxis() {
			const te = this.elements;
			const scaleXSq = te[0] * te[0] + te[1] * te[1] + te[2] * te[2];
			const scaleYSq = te[4] * te[4] + te[5] * te[5] + te[6] * te[6];
			const scaleZSq = te[8] * te[8] + te[9] * te[9] + te[10] * te[10];
			return Math.sqrt(Math.max(scaleXSq, scaleYSq, scaleZSq));
		}

		makeTranslation(x, y, z) {
			this.set(1, 0, 0, x, 0, 1, 0, y, 0, 0, 1, z, 0, 0, 0, 1);
			return this;
		}

		makeRotationX(theta) {
			const c = Math.cos(theta),
						s = Math.sin(theta);
			this.set(1, 0, 0, 0, 0, c, -s, 0, 0, s, c, 0, 0, 0, 0, 1);
			return this;
		}

		makeRotationY(theta) {
			const c = Math.cos(theta),
						s = Math.sin(theta);
			this.set(c, 0, s, 0, 0, 1, 0, 0, -s, 0, c, 0, 0, 0, 0, 1);
			return this;
		}

		makeRotationZ(theta) {
			const c = Math.cos(theta),
						s = Math.sin(theta);
			this.set(c, -s, 0, 0, s, c, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
			return this;
		}

		makeRotationAxis(axis, angle) {
			// Based on http://www.gamedev.net/reference/articles/article1199.asp
			const c = Math.cos(angle);
			const s = Math.sin(angle);
			const t = 1 - c;
			const x = axis.x,
						y = axis.y,
						z = axis.z;
			const tx = t * x,
						ty = t * y;
			this.set(tx * x + c, tx * y - s * z, tx * z + s * y, 0, tx * y + s * z, ty * y + c, ty * z - s * x, 0, tx * z - s * y, ty * z + s * x, t * z * z + c, 0, 0, 0, 0, 1);
			return this;
		}

		makeScale(x, y, z) {
			this.set(x, 0, 0, 0, 0, y, 0, 0, 0, 0, z, 0, 0, 0, 0, 1);
			return this;
		}

		makeShear(xy, xz, yx, yz, zx, zy) {
			this.set(1, yx, zx, 0, xy, 1, zy, 0, xz, yz, 1, 0, 0, 0, 0, 1);
			return this;
		}

		compose(position, quaternion, scale) {
			const te = this.elements;
			const x = quaternion._x,
						y = quaternion._y,
						z = quaternion._z,
						w = quaternion._w;
			const x2 = x + x,
						y2 = y + y,
						z2 = z + z;
			const xx = x * x2,
						xy = x * y2,
						xz = x * z2;
			const yy = y * y2,
						yz = y * z2,
						zz = z * z2;
			const wx = w * x2,
						wy = w * y2,
						wz = w * z2;
			const sx = scale.x,
						sy = scale.y,
						sz = scale.z;
			te[0] = (1 - (yy + zz)) * sx;
			te[1] = (xy + wz) * sx;
			te[2] = (xz - wy) * sx;
			te[3] = 0;
			te[4] = (xy - wz) * sy;
			te[5] = (1 - (xx + zz)) * sy;
			te[6] = (yz + wx) * sy;
			te[7] = 0;
			te[8] = (xz + wy) * sz;
			te[9] = (yz - wx) * sz;
			te[10] = (1 - (xx + yy)) * sz;
			te[11] = 0;
			te[12] = position.x;
			te[13] = position.y;
			te[14] = position.z;
			te[15] = 1;
			return this;
		}

		decompose(position, quaternion, scale) {
			const te = this.elements;

			let sx = _v1$5.set(te[0], te[1], te[2]).length();

			const sy = _v1$5.set(te[4], te[5], te[6]).length();

			const sz = _v1$5.set(te[8], te[9], te[10]).length(); // if determine is negative, we need to invert one scale


			const det = this.determinant();
			if (det < 0) sx = -sx;
			position.x = te[12];
			position.y = te[13];
			position.z = te[14]; // scale the rotation part

			_m1$2.copy(this);

			const invSX = 1 / sx;
			const invSY = 1 / sy;
			const invSZ = 1 / sz;
			_m1$2.elements[0] *= invSX;
			_m1$2.elements[1] *= invSX;
			_m1$2.elements[2] *= invSX;
			_m1$2.elements[4] *= invSY;
			_m1$2.elements[5] *= invSY;
			_m1$2.elements[6] *= invSY;
			_m1$2.elements[8] *= invSZ;
			_m1$2.elements[9] *= invSZ;
			_m1$2.elements[10] *= invSZ;
			quaternion.setFromRotationMatrix(_m1$2);
			scale.x = sx;
			scale.y = sy;
			scale.z = sz;
			return this;
		}

		makePerspective(left, right, top, bottom, near, far) {
			if (far === undefined) {
				console.warn('THREE.Matrix4: .makePerspective() has been redefined and has a new signature. Please check the docs.');
			}

			const te = this.elements;
			const x = 2 * near / (right - left);
			const y = 2 * near / (top - bottom);
			const a = (right + left) / (right - left);
			const b = (top + bottom) / (top - bottom);
			const c = -(far + near) / (far - near);
			const d = -2 * far * near / (far - near);
			te[0] = x;
			te[4] = 0;
			te[8] = a;
			te[12] = 0;
			te[1] = 0;
			te[5] = y;
			te[9] = b;
			te[13] = 0;
			te[2] = 0;
			te[6] = 0;
			te[10] = c;
			te[14] = d;
			te[3] = 0;
			te[7] = 0;
			te[11] = -1;
			te[15] = 0;
			return this;
		}

		makeOrthographic(left, right, top, bottom, near, far) {
			const te = this.elements;
			const w = 1.0 / (right - left);
			const h = 1.0 / (top - bottom);
			const p = 1.0 / (far - near);
			const x = (right + left) * w;
			const y = (top + bottom) * h;
			const z = (far + near) * p;
			te[0] = 2 * w;
			te[4] = 0;
			te[8] = 0;
			te[12] = -x;
			te[1] = 0;
			te[5] = 2 * h;
			te[9] = 0;
			te[13] = -y;
			te[2] = 0;
			te[6] = 0;
			te[10] = -2 * p;
			te[14] = -z;
			te[3] = 0;
			te[7] = 0;
			te[11] = 0;
			te[15] = 1;
			return this;
		}

		equals(matrix) {
			const te = this.elements;
			const me = matrix.elements;

			for (let i = 0; i < 16; i++) {
				if (te[i] !== me[i]) return false;
			}

			return true;
		}

		fromArray(array, offset = 0) {
			for (let i = 0; i < 16; i++) {
				this.elements[i] = array[i + offset];
			}

			return this;
		}

		toArray(array = [], offset = 0) {
			const te = this.elements;
			array[offset] = te[0];
			array[offset + 1] = te[1];
			array[offset + 2] = te[2];
			array[offset + 3] = te[3];
			array[offset + 4] = te[4];
			array[offset + 5] = te[5];
			array[offset + 6] = te[6];
			array[offset + 7] = te[7];
			array[offset + 8] = te[8];
			array[offset + 9] = te[9];
			array[offset + 10] = te[10];
			array[offset + 11] = te[11];
			array[offset + 12] = te[12];
			array[offset + 13] = te[13];
			array[offset + 14] = te[14];
			array[offset + 15] = te[15];
			return array;
		}

	}

	Matrix4.prototype.isMatrix4 = true;

	const _v1$5 = /*@__PURE__*/new Vector3();

	const _m1$2 = /*@__PURE__*/new Matrix4();

	const _zero = /*@__PURE__*/new Vector3(0, 0, 0);

	const _one = /*@__PURE__*/new Vector3(1, 1, 1);

	const _x = /*@__PURE__*/new Vector3();

	const _y = /*@__PURE__*/new Vector3();

	const _z = /*@__PURE__*/new Vector3();

	const _matrix$1 = /*@__PURE__*/new Matrix4();

	const _quaternion$3 = /*@__PURE__*/new Quaternion();

	class Euler {
		constructor(x = 0, y = 0, z = 0, order = Euler.DefaultOrder) {
			this._x = x;
			this._y = y;
			this._z = z;
			this._order = order;
		}

		get x() {
			return this._x;
		}

		set x(value) {
			this._x = value;

			this._onChangeCallback();
		}

		get y() {
			return this._y;
		}

		set y(value) {
			this._y = value;

			this._onChangeCallback();
		}

		get z() {
			return this._z;
		}

		set z(value) {
			this._z = value;

			this._onChangeCallback();
		}

		get order() {
			return this._order;
		}

		set order(value) {
			this._order = value;

			this._onChangeCallback();
		}

		set(x, y, z, order = this._order) {
			this._x = x;
			this._y = y;
			this._z = z;
			this._order = order;

			this._onChangeCallback();

			return this;
		}

		clone() {
			return new this.constructor(this._x, this._y, this._z, this._order);
		}

		copy(euler) {
			this._x = euler._x;
			this._y = euler._y;
			this._z = euler._z;
			this._order = euler._order;

			this._onChangeCallback();

			return this;
		}

		setFromRotationMatrix(m, order = this._order, update = true) {
			// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)
			const te = m.elements;
			const m11 = te[0],
						m12 = te[4],
						m13 = te[8];
			const m21 = te[1],
						m22 = te[5],
						m23 = te[9];
			const m31 = te[2],
						m32 = te[6],
						m33 = te[10];

			switch (order) {
				case 'XYZ':
					this._y = Math.asin(clamp(m13, -1, 1));

					if (Math.abs(m13) < 0.9999999) {
						this._x = Math.atan2(-m23, m33);
						this._z = Math.atan2(-m12, m11);
					} else {
						this._x = Math.atan2(m32, m22);
						this._z = 0;
					}

					break;

				case 'YXZ':
					this._x = Math.asin(-clamp(m23, -1, 1));

					if (Math.abs(m23) < 0.9999999) {
						this._y = Math.atan2(m13, m33);
						this._z = Math.atan2(m21, m22);
					} else {
						this._y = Math.atan2(-m31, m11);
						this._z = 0;
					}

					break;

				case 'ZXY':
					this._x = Math.asin(clamp(m32, -1, 1));

					if (Math.abs(m32) < 0.9999999) {
						this._y = Math.atan2(-m31, m33);
						this._z = Math.atan2(-m12, m22);
					} else {
						this._y = 0;
						this._z = Math.atan2(m21, m11);
					}

					break;

				case 'ZYX':
					this._y = Math.asin(-clamp(m31, -1, 1));

					if (Math.abs(m31) < 0.9999999) {
						this._x = Math.atan2(m32, m33);
						this._z = Math.atan2(m21, m11);
					} else {
						this._x = 0;
						this._z = Math.atan2(-m12, m22);
					}

					break;

				case 'YZX':
					this._z = Math.asin(clamp(m21, -1, 1));

					if (Math.abs(m21) < 0.9999999) {
						this._x = Math.atan2(-m23, m22);
						this._y = Math.atan2(-m31, m11);
					} else {
						this._x = 0;
						this._y = Math.atan2(m13, m33);
					}

					break;

				case 'XZY':
					this._z = Math.asin(-clamp(m12, -1, 1));

					if (Math.abs(m12) < 0.9999999) {
						this._x = Math.atan2(m32, m22);
						this._y = Math.atan2(m13, m11);
					} else {
						this._x = Math.atan2(-m23, m33);
						this._y = 0;
					}

					break;

				default:
					console.warn('THREE.Euler: .setFromRotationMatrix() encountered an unknown order: ' + order);
			}

			this._order = order;
			if (update === true) this._onChangeCallback();
			return this;
		}

		setFromQuaternion(q, order, update) {
			_matrix$1.makeRotationFromQuaternion(q);

			return this.setFromRotationMatrix(_matrix$1, order, update);
		}

		setFromVector3(v, order = this._order) {
			return this.set(v.x, v.y, v.z, order);
		}

		reorder(newOrder) {
			// WARNING: this discards revolution information -bhouston
			_quaternion$3.setFromEuler(this);

			return this.setFromQuaternion(_quaternion$3, newOrder);
		}

		equals(euler) {
			return euler._x === this._x && euler._y === this._y && euler._z === this._z && euler._order === this._order;
		}

		fromArray(array) {
			this._x = array[0];
			this._y = array[1];
			this._z = array[2];
			if (array[3] !== undefined) this._order = array[3];

			this._onChangeCallback();

			return this;
		}

		toArray(array = [], offset = 0) {
			array[offset] = this._x;
			array[offset + 1] = this._y;
			array[offset + 2] = this._z;
			array[offset + 3] = this._order;
			return array;
		}

		toVector3(optionalResult) {
			if (optionalResult) {
				return optionalResult.set(this._x, this._y, this._z);
			} else {
				return new Vector3(this._x, this._y, this._z);
			}
		}

		_onChange(callback) {
			this._onChangeCallback = callback;
			return this;
		}

		_onChangeCallback() {}

	}

	Euler.prototype.isEuler = true;
	Euler.DefaultOrder = 'XYZ';
	Euler.RotationOrders = ['XYZ', 'YZX', 'ZXY', 'XZY', 'YXZ', 'ZYX'];

	class Layers {
		constructor() {
			this.mask = 1 | 0;
		}

		set(channel) {
			this.mask = 1 << channel | 0;
		}

		enable(channel) {
			this.mask |= 1 << channel | 0;
		}

		enableAll() {
			this.mask = 0xffffffff | 0;
		}

		toggle(channel) {
			this.mask ^= 1 << channel | 0;
		}

		disable(channel) {
			this.mask &= ~(1 << channel | 0);
		}

		disableAll() {
			this.mask = 0;
		}

		test(layers) {
			return (this.mask & layers.mask) !== 0;
		}

	}

	let _object3DId = 0;

	const _v1$4 = /*@__PURE__*/new Vector3();

	const _q1 = /*@__PURE__*/new Quaternion();

	const _m1$1 = /*@__PURE__*/new Matrix4();

	const _target = /*@__PURE__*/new Vector3();

	const _position$3 = /*@__PURE__*/new Vector3();

	const _scale$2 = /*@__PURE__*/new Vector3();

	const _quaternion$2 = /*@__PURE__*/new Quaternion();

	const _xAxis = /*@__PURE__*/new Vector3(1, 0, 0);

	const _yAxis = /*@__PURE__*/new Vector3(0, 1, 0);

	const _zAxis = /*@__PURE__*/new Vector3(0, 0, 1);

	const _addedEvent = {
		type: 'added'
	};
	const _removedEvent = {
		type: 'removed'
	};

	class Object3D extends EventDispatcher {
		constructor() {
			super();
			Object.defineProperty(this, 'id', {
				value: _object3DId++
			});
			this.uuid = generateUUID();
			this.name = '';
			this.type = 'Object3D';
			this.parent = null;
			this.children = [];
			this.up = Object3D.DefaultUp.clone();
			const position = new Vector3();
			const rotation = new Euler();
			const quaternion = new Quaternion();
			const scale = new Vector3(1, 1, 1);

			function onRotationChange() {
				quaternion.setFromEuler(rotation, false);
			}

			function onQuaternionChange() {
				rotation.setFromQuaternion(quaternion, undefined, false);
			}

			rotation._onChange(onRotationChange);

			quaternion._onChange(onQuaternionChange);

			Object.defineProperties(this, {
				position: {
					configurable: true,
					enumerable: true,
					value: position
				},
				rotation: {
					configurable: true,
					enumerable: true,
					value: rotation
				},
				quaternion: {
					configurable: true,
					enumerable: true,
					value: quaternion
				},
				scale: {
					configurable: true,
					enumerable: true,
					value: scale
				},
				modelViewMatrix: {
					value: new Matrix4()
				},
				normalMatrix: {
					value: new Matrix3()
				}
			});
			this.matrix = new Matrix4();
			this.matrixWorld = new Matrix4();
			this.matrixAutoUpdate = Object3D.DefaultMatrixAutoUpdate;
			this.matrixWorldNeedsUpdate = false;
			this.layers = new Layers();
			this.visible = true;
			this.castShadow = false;
			this.receiveShadow = false;
			this.frustumCulled = true;
			this.renderOrder = 0;
			this.animations = [];
			this.userData = {};
		}

		onBeforeRender() {}

		onAfterRender() {}

		applyMatrix4(matrix) {
			if (this.matrixAutoUpdate) this.updateMatrix();
			this.matrix.premultiply(matrix);
			this.matrix.decompose(this.position, this.quaternion, this.scale);
		}

		applyQuaternion(q) {
			this.quaternion.premultiply(q);
			return this;
		}

		setRotationFromAxisAngle(axis, angle) {
			// assumes axis is normalized
			this.quaternion.setFromAxisAngle(axis, angle);
		}

		setRotationFromEuler(euler) {
			this.quaternion.setFromEuler(euler, true);
		}

		setRotationFromMatrix(m) {
			// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)
			this.quaternion.setFromRotationMatrix(m);
		}

		setRotationFromQuaternion(q) {
			// assumes q is normalized
			this.quaternion.copy(q);
		}

		rotateOnAxis(axis, angle) {
			// rotate object on axis in object space
			// axis is assumed to be normalized
			_q1.setFromAxisAngle(axis, angle);

			this.quaternion.multiply(_q1);
			return this;
		}

		rotateOnWorldAxis(axis, angle) {
			// rotate object on axis in world space
			// axis is assumed to be normalized
			// method assumes no rotated parent
			_q1.setFromAxisAngle(axis, angle);

			this.quaternion.premultiply(_q1);
			return this;
		}

		rotateX(angle) {
			return this.rotateOnAxis(_xAxis, angle);
		}

		rotateY(angle) {
			return this.rotateOnAxis(_yAxis, angle);
		}

		rotateZ(angle) {
			return this.rotateOnAxis(_zAxis, angle);
		}

		translateOnAxis(axis, distance) {
			// translate object by distance along axis in object space
			// axis is assumed to be normalized
			_v1$4.copy(axis).applyQuaternion(this.quaternion);

			this.position.add(_v1$4.multiplyScalar(distance));
			return this;
		}

		translateX(distance) {
			return this.translateOnAxis(_xAxis, distance);
		}

		translateY(distance) {
			return this.translateOnAxis(_yAxis, distance);
		}

		translateZ(distance) {
			return this.translateOnAxis(_zAxis, distance);
		}

		localToWorld(vector) {
			return vector.applyMatrix4(this.matrixWorld);
		}

		worldToLocal(vector) {
			return vector.applyMatrix4(_m1$1.copy(this.matrixWorld).invert());
		}

		lookAt(x, y, z) {
			// This method does not support objects having non-uniformly-scaled parent(s)
			if (x.isVector3) {
				_target.copy(x);
			} else {
				_target.set(x, y, z);
			}

			const parent = this.parent;
			this.updateWorldMatrix(true, false);

			_position$3.setFromMatrixPosition(this.matrixWorld);

			if (this.isCamera || this.isLight) {
				_m1$1.lookAt(_position$3, _target, this.up);
			} else {
				_m1$1.lookAt(_target, _position$3, this.up);
			}

			this.quaternion.setFromRotationMatrix(_m1$1);

			if (parent) {
				_m1$1.extractRotation(parent.matrixWorld);

				_q1.setFromRotationMatrix(_m1$1);

				this.quaternion.premultiply(_q1.invert());
			}
		}

		add(object) {
			if (arguments.length > 1) {
				for (let i = 0; i < arguments.length; i++) {
					this.add(arguments[i]);
				}

				return this;
			}

			if (object === this) {
				console.error('THREE.Object3D.add: object can\'t be added as a child of itself.', object);
				return this;
			}

			if (object && object.isObject3D) {
				if (object.parent !== null) {
					object.parent.remove(object);
				}

				object.parent = this;
				this.children.push(object);
				object.dispatchEvent(_addedEvent);
			} else {
				console.error('THREE.Object3D.add: object not an instance of THREE.Object3D.', object);
			}

			return this;
		}

		remove(object) {
			if (arguments.length > 1) {
				for (let i = 0; i < arguments.length; i++) {
					this.remove(arguments[i]);
				}

				return this;
			}

			const index = this.children.indexOf(object);

			if (index !== -1) {
				object.parent = null;
				this.children.splice(index, 1);
				object.dispatchEvent(_removedEvent);
			}

			return this;
		}

		removeFromParent() {
			const parent = this.parent;

			if (parent !== null) {
				parent.remove(this);
			}

			return this;
		}

		clear() {
			for (let i = 0; i < this.children.length; i++) {
				const object = this.children[i];
				object.parent = null;
				object.dispatchEvent(_removedEvent);
			}

			this.children.length = 0;
			return this;
		}

		attach(object) {
			// adds object as a child of this, while maintaining the object's world transform
			this.updateWorldMatrix(true, false);

			_m1$1.copy(this.matrixWorld).invert();

			if (object.parent !== null) {
				object.parent.updateWorldMatrix(true, false);

				_m1$1.multiply(object.parent.matrixWorld);
			}

			object.applyMatrix4(_m1$1);
			this.add(object);
			object.updateWorldMatrix(false, true);
			return this;
		}

		getObjectById(id) {
			return this.getObjectByProperty('id', id);
		}

		getObjectByName(name) {
			return this.getObjectByProperty('name', name);
		}

		getObjectByProperty(name, value) {
			if (this[name] === value) return this;

			for (let i = 0, l = this.children.length; i < l; i++) {
				const child = this.children[i];
				const object = child.getObjectByProperty(name, value);

				if (object !== undefined) {
					return object;
				}
			}

			return undefined;
		}

		getWorldPosition(target) {
			this.updateWorldMatrix(true, false);
			return target.setFromMatrixPosition(this.matrixWorld);
		}

		getWorldQuaternion(target) {
			this.updateWorldMatrix(true, false);
			this.matrixWorld.decompose(_position$3, target, _scale$2);
			return target;
		}

		getWorldScale(target) {
			this.updateWorldMatrix(true, false);
			this.matrixWorld.decompose(_position$3, _quaternion$2, target);
			return target;
		}

		getWorldDirection(target) {
			this.updateWorldMatrix(true, false);
			const e = this.matrixWorld.elements;
			return target.set(e[8], e[9], e[10]).normalize();
		}

		raycast() {}

		traverse(callback) {
			callback(this);
			const children = this.children;

			for (let i = 0, l = children.length; i < l; i++) {
				children[i].traverse(callback);
			}
		}

		traverseVisible(callback) {
			if (this.visible === false) return;
			callback(this);
			const children = this.children;

			for (let i = 0, l = children.length; i < l; i++) {
				children[i].traverseVisible(callback);
			}
		}

		traverseAncestors(callback) {
			const parent = this.parent;

			if (parent !== null) {
				callback(parent);
				parent.traverseAncestors(callback);
			}
		}

		updateMatrix() {
			this.matrix.compose(this.position, this.quaternion, this.scale);
			this.matrixWorldNeedsUpdate = true;
		}

		updateMatrixWorld(force) {
			if (this.matrixAutoUpdate) this.updateMatrix();

			if (this.matrixWorldNeedsUpdate || force) {
				if (this.parent === null) {
					this.matrixWorld.copy(this.matrix);
				} else {
					this.matrixWorld.multiplyMatrices(this.parent.matrixWorld, this.matrix);
				}

				this.matrixWorldNeedsUpdate = false;
				force = true;
			} // update children


			const children = this.children;

			for (let i = 0, l = children.length; i < l; i++) {
				children[i].updateMatrixWorld(force);
			}
		}

		updateWorldMatrix(updateParents, updateChildren) {
			const parent = this.parent;

			if (updateParents === true && parent !== null) {
				parent.updateWorldMatrix(true, false);
			}

			if (this.matrixAutoUpdate) this.updateMatrix();

			if (this.parent === null) {
				this.matrixWorld.copy(this.matrix);
			} else {
				this.matrixWorld.multiplyMatrices(this.parent.matrixWorld, this.matrix);
			} // update children


			if (updateChildren === true) {
				const children = this.children;

				for (let i = 0, l = children.length; i < l; i++) {
					children[i].updateWorldMatrix(false, true);
				}
			}
		}

		toJSON(meta) {
			// meta is a string when called from JSON.stringify
			const isRootObject = meta === undefined || typeof meta === 'string';
			const output = {}; // meta is a hash used to collect geometries, materials.
			// not providing it implies that this is the root object
			// being serialized.

			if (isRootObject) {
				// initialize meta obj
				meta = {
					geometries: {},
					materials: {},
					textures: {},
					images: {},
					shapes: {},
					skeletons: {},
					animations: {}
				};
				output.metadata = {
					version: 4.5,
					type: 'Object',
					generator: 'Object3D.toJSON'
				};
			} // standard Object3D serialization


			const object = {};
			object.uuid = this.uuid;
			object.type = this.type;
			if (this.name !== '') object.name = this.name;
			if (this.castShadow === true) object.castShadow = true;
			if (this.receiveShadow === true) object.receiveShadow = true;
			if (this.visible === false) object.visible = false;
			if (this.frustumCulled === false) object.frustumCulled = false;
			if (this.renderOrder !== 0) object.renderOrder = this.renderOrder;
			if (JSON.stringify(this.userData) !== '{}') object.userData = this.userData;
			object.layers = this.layers.mask;
			object.matrix = this.matrix.toArray();
			if (this.matrixAutoUpdate === false) object.matrixAutoUpdate = false; // object specific properties

			if (this.isInstancedMesh) {
				object.type = 'InstancedMesh';
				object.count = this.count;
				object.instanceMatrix = this.instanceMatrix.toJSON();
				if (this.instanceColor !== null) object.instanceColor = this.instanceColor.toJSON();
			} //


			function serialize(library, element) {
				if (library[element.uuid] === undefined) {
					library[element.uuid] = element.toJSON(meta);
				}

				return element.uuid;
			}

			if (this.isScene) {
				if (this.background) {
					if (this.background.isColor) {
						object.background = this.background.toJSON();
					} else if (this.background.isTexture) {
						object.background = this.background.toJSON(meta).uuid;
					}
				}

				if (this.environment && this.environment.isTexture) {
					object.environment = this.environment.toJSON(meta).uuid;
				}
			} else if (this.isMesh || this.isLine || this.isPoints) {
				object.geometry = serialize(meta.geometries, this.geometry);
				const parameters = this.geometry.parameters;

				if (parameters !== undefined && parameters.shapes !== undefined) {
					const shapes = parameters.shapes;

					if (Array.isArray(shapes)) {
						for (let i = 0, l = shapes.length; i < l; i++) {
							const shape = shapes[i];
							serialize(meta.shapes, shape);
						}
					} else {
						serialize(meta.shapes, shapes);
					}
				}
			}

			if (this.isSkinnedMesh) {
				object.bindMode = this.bindMode;
				object.bindMatrix = this.bindMatrix.toArray();

				if (this.skeleton !== undefined) {
					serialize(meta.skeletons, this.skeleton);
					object.skeleton = this.skeleton.uuid;
				}
			}

			if (this.material !== undefined) {
				if (Array.isArray(this.material)) {
					const uuids = [];

					for (let i = 0, l = this.material.length; i < l; i++) {
						uuids.push(serialize(meta.materials, this.material[i]));
					}

					object.material = uuids;
				} else {
					object.material = serialize(meta.materials, this.material);
				}
			} //


			if (this.children.length > 0) {
				object.children = [];

				for (let i = 0; i < this.children.length; i++) {
					object.children.push(this.children[i].toJSON(meta).object);
				}
			} //


			if (this.animations.length > 0) {
				object.animations = [];

				for (let i = 0; i < this.animations.length; i++) {
					const animation = this.animations[i];
					object.animations.push(serialize(meta.animations, animation));
				}
			}

			if (isRootObject) {
				const geometries = extractFromCache(meta.geometries);
				const materials = extractFromCache(meta.materials);
				const textures = extractFromCache(meta.textures);
				const images = extractFromCache(meta.images);
				const shapes = extractFromCache(meta.shapes);
				const skeletons = extractFromCache(meta.skeletons);
				const animations = extractFromCache(meta.animations);
				if (geometries.length > 0) output.geometries = geometries;
				if (materials.length > 0) output.materials = materials;
				if (textures.length > 0) output.textures = textures;
				if (images.length > 0) output.images = images;
				if (shapes.length > 0) output.shapes = shapes;
				if (skeletons.length > 0) output.skeletons = skeletons;
				if (animations.length > 0) output.animations = animations;
			}

			output.object = object;
			return output; // extract data from the cache hash
			// remove metadata on each item
			// and return as array

			function extractFromCache(cache) {
				const values = [];

				for (const key in cache) {
					const data = cache[key];
					delete data.metadata;
					values.push(data);
				}

				return values;
			}
		}

		clone(recursive) {
			return new this.constructor().copy(this, recursive);
		}

		copy(source, recursive = true) {
			this.name = source.name;
			this.up.copy(source.up);
			this.position.copy(source.position);
			this.rotation.order = source.rotation.order;
			this.quaternion.copy(source.quaternion);
			this.scale.copy(source.scale);
			this.matrix.copy(source.matrix);
			this.matrixWorld.copy(source.matrixWorld);
			this.matrixAutoUpdate = source.matrixAutoUpdate;
			this.matrixWorldNeedsUpdate = source.matrixWorldNeedsUpdate;
			this.layers.mask = source.layers.mask;
			this.visible = source.visible;
			this.castShadow = source.castShadow;
			this.receiveShadow = source.receiveShadow;
			this.frustumCulled = source.frustumCulled;
			this.renderOrder = source.renderOrder;
			this.userData = JSON.parse(JSON.stringify(source.userData));

			if (recursive === true) {
				for (let i = 0; i < source.children.length; i++) {
					const child = source.children[i];
					this.add(child.clone());
				}
			}

			return this;
		}

	}

	Object3D.DefaultUp = new Vector3(0, 1, 0);
	Object3D.DefaultMatrixAutoUpdate = true;
	Object3D.prototype.isObject3D = true;

	const _v0$1 = /*@__PURE__*/new Vector3();

	const _v1$3 = /*@__PURE__*/new Vector3();

	const _v2$2 = /*@__PURE__*/new Vector3();

	const _v3$1 = /*@__PURE__*/new Vector3();

	const _vab = /*@__PURE__*/new Vector3();

	const _vac = /*@__PURE__*/new Vector3();

	const _vbc = /*@__PURE__*/new Vector3();

	const _vap = /*@__PURE__*/new Vector3();

	const _vbp = /*@__PURE__*/new Vector3();

	const _vcp = /*@__PURE__*/new Vector3();

	class Triangle {
		constructor(a = new Vector3(), b = new Vector3(), c = new Vector3()) {
			this.a = a;
			this.b = b;
			this.c = c;
		}

		static getNormal(a, b, c, target) {
			target.subVectors(c, b);

			_v0$1.subVectors(a, b);

			target.cross(_v0$1);
			const targetLengthSq = target.lengthSq();

			if (targetLengthSq > 0) {
				return target.multiplyScalar(1 / Math.sqrt(targetLengthSq));
			}

			return target.set(0, 0, 0);
		} // static/instance method to calculate barycentric coordinates
		// based on: http://www.blackpawn.com/texts/pointinpoly/default.html


		static getBarycoord(point, a, b, c, target) {
			_v0$1.subVectors(c, a);

			_v1$3.subVectors(b, a);

			_v2$2.subVectors(point, a);

			const dot00 = _v0$1.dot(_v0$1);

			const dot01 = _v0$1.dot(_v1$3);

			const dot02 = _v0$1.dot(_v2$2);

			const dot11 = _v1$3.dot(_v1$3);

			const dot12 = _v1$3.dot(_v2$2);

			const denom = dot00 * dot11 - dot01 * dot01; // collinear or singular triangle

			if (denom === 0) {
				// arbitrary location outside of triangle?
				// not sure if this is the best idea, maybe should be returning undefined
				return target.set(-2, -1, -1);
			}

			const invDenom = 1 / denom;
			const u = (dot11 * dot02 - dot01 * dot12) * invDenom;
			const v = (dot00 * dot12 - dot01 * dot02) * invDenom; // barycentric coordinates must always sum to 1

			return target.set(1 - u - v, v, u);
		}

		static containsPoint(point, a, b, c) {
			this.getBarycoord(point, a, b, c, _v3$1);
			return _v3$1.x >= 0 && _v3$1.y >= 0 && _v3$1.x + _v3$1.y <= 1;
		}

		static getUV(point, p1, p2, p3, uv1, uv2, uv3, target) {
			this.getBarycoord(point, p1, p2, p3, _v3$1);
			target.set(0, 0);
			target.addScaledVector(uv1, _v3$1.x);
			target.addScaledVector(uv2, _v3$1.y);
			target.addScaledVector(uv3, _v3$1.z);
			return target;
		}

		static isFrontFacing(a, b, c, direction) {
			_v0$1.subVectors(c, b);

			_v1$3.subVectors(a, b); // strictly front facing


			return _v0$1.cross(_v1$3).dot(direction) < 0 ? true : false;
		}

		set(a, b, c) {
			this.a.copy(a);
			this.b.copy(b);
			this.c.copy(c);
			return this;
		}

		setFromPointsAndIndices(points, i0, i1, i2) {
			this.a.copy(points[i0]);
			this.b.copy(points[i1]);
			this.c.copy(points[i2]);
			return this;
		}

		setFromAttributeAndIndices(attribute, i0, i1, i2) {
			this.a.fromBufferAttribute(attribute, i0);
			this.b.fromBufferAttribute(attribute, i1);
			this.c.fromBufferAttribute(attribute, i2);
			return this;
		}

		clone() {
			return new this.constructor().copy(this);
		}

		copy(triangle) {
			this.a.copy(triangle.a);
			this.b.copy(triangle.b);
			this.c.copy(triangle.c);
			return this;
		}

		getArea() {
			_v0$1.subVectors(this.c, this.b);

			_v1$3.subVectors(this.a, this.b);

			return _v0$1.cross(_v1$3).length() * 0.5;
		}

		getMidpoint(target) {
			return target.addVectors(this.a, this.b).add(this.c).multiplyScalar(1 / 3);
		}

		getNormal(target) {
			return Triangle.getNormal(this.a, this.b, this.c, target);
		}

		getPlane(target) {
			return target.setFromCoplanarPoints(this.a, this.b, this.c);
		}

		getBarycoord(point, target) {
			return Triangle.getBarycoord(point, this.a, this.b, this.c, target);
		}

		getUV(point, uv1, uv2, uv3, target) {
			return Triangle.getUV(point, this.a, this.b, this.c, uv1, uv2, uv3, target);
		}

		containsPoint(point) {
			return Triangle.containsPoint(point, this.a, this.b, this.c);
		}

		isFrontFacing(direction) {
			return Triangle.isFrontFacing(this.a, this.b, this.c, direction);
		}

		intersectsBox(box) {
			return box.intersectsTriangle(this);
		}

		closestPointToPoint(p, target) {
			const a = this.a,
						b = this.b,
						c = this.c;
			let v, w; // algorithm thanks to Real-Time Collision Detection by Christer Ericson,
			// published by Morgan Kaufmann Publishers, (c) 2005 Elsevier Inc.,
			// under the accompanying license; see chapter 5.1.5 for detailed explanation.
			// basically, we're distinguishing which of the voronoi regions of the triangle
			// the point lies in with the minimum amount of redundant computation.

			_vab.subVectors(b, a);

			_vac.subVectors(c, a);

			_vap.subVectors(p, a);

			const d1 = _vab.dot(_vap);

			const d2 = _vac.dot(_vap);

			if (d1 <= 0 && d2 <= 0) {
				// vertex region of A; barycentric coords (1, 0, 0)
				return target.copy(a);
			}

			_vbp.subVectors(p, b);

			const d3 = _vab.dot(_vbp);

			const d4 = _vac.dot(_vbp);

			if (d3 >= 0 && d4 <= d3) {
				// vertex region of B; barycentric coords (0, 1, 0)
				return target.copy(b);
			}

			const vc = d1 * d4 - d3 * d2;

			if (vc <= 0 && d1 >= 0 && d3 <= 0) {
				v = d1 / (d1 - d3); // edge region of AB; barycentric coords (1-v, v, 0)

				return target.copy(a).addScaledVector(_vab, v);
			}

			_vcp.subVectors(p, c);

			const d5 = _vab.dot(_vcp);

			const d6 = _vac.dot(_vcp);

			if (d6 >= 0 && d5 <= d6) {
				// vertex region of C; barycentric coords (0, 0, 1)
				return target.copy(c);
			}

			const vb = d5 * d2 - d1 * d6;

			if (vb <= 0 && d2 >= 0 && d6 <= 0) {
				w = d2 / (d2 - d6); // edge region of AC; barycentric coords (1-w, 0, w)

				return target.copy(a).addScaledVector(_vac, w);
			}

			const va = d3 * d6 - d5 * d4;

			if (va <= 0 && d4 - d3 >= 0 && d5 - d6 >= 0) {
				_vbc.subVectors(c, b);

				w = (d4 - d3) / (d4 - d3 + (d5 - d6)); // edge region of BC; barycentric coords (0, 1-w, w)

				return target.copy(b).addScaledVector(_vbc, w); // edge region of BC
			} // face region


			const denom = 1 / (va + vb + vc); // u = va * denom

			v = vb * denom;
			w = vc * denom;
			return target.copy(a).addScaledVector(_vab, v).addScaledVector(_vac, w);
		}

		equals(triangle) {
			return triangle.a.equals(this.a) && triangle.b.equals(this.b) && triangle.c.equals(this.c);
		}

	}

	let materialId = 0;

	class Material extends EventDispatcher {
		constructor() {
			super();
			Object.defineProperty(this, 'id', {
				value: materialId++
			});
			this.uuid = generateUUID();
			this.name = '';
			this.type = 'Material';
			this.fog = true;
			this.blending = NormalBlending;
			this.side = FrontSide;
			this.vertexColors = false;
			this.opacity = 1;
			this.format = RGBAFormat;
			this.transparent = false;
			this.blendSrc = SrcAlphaFactor;
			this.blendDst = OneMinusSrcAlphaFactor;
			this.blendEquation = AddEquation;
			this.blendSrcAlpha = null;
			this.blendDstAlpha = null;
			this.blendEquationAlpha = null;
			this.depthFunc = LessEqualDepth;
			this.depthTest = true;
			this.depthWrite = true;
			this.stencilWriteMask = 0xff;
			this.stencilFunc = AlwaysStencilFunc;
			this.stencilRef = 0;
			this.stencilFuncMask = 0xff;
			this.stencilFail = KeepStencilOp;
			this.stencilZFail = KeepStencilOp;
			this.stencilZPass = KeepStencilOp;
			this.stencilWrite = false;
			this.clippingPlanes = null;
			this.clipIntersection = false;
			this.clipShadows = false;
			this.shadowSide = null;
			this.colorWrite = true;
			this.precision = null; // override the renderer's default precision for this material

			this.polygonOffset = false;
			this.polygonOffsetFactor = 0;
			this.polygonOffsetUnits = 0;
			this.dithering = false;
			this.alphaToCoverage = false;
			this.premultipliedAlpha = false;
			this.visible = true;
			this.toneMapped = true;
			this.userData = {};
			this.version = 0;
			this._alphaTest = 0;
		}

		get alphaTest() {
			return this._alphaTest;
		}

		set alphaTest(value) {
			if (this._alphaTest > 0 !== value > 0) {
				this.version++;
			}

			this._alphaTest = value;
		}

		onBuild() {}

		onBeforeRender() {}

		onBeforeCompile() {}

		customProgramCacheKey() {
			return this.onBeforeCompile.toString();
		}

		setValues(values) {
			if (values === undefined) return;

			for (const key in values) {
				const newValue = values[key];

				if (newValue === undefined) {
					console.warn('THREE.Material: \'' + key + '\' parameter is undefined.');
					continue;
				} // for backward compatability if shading is set in the constructor


				if (key === 'shading') {
					console.warn('THREE.' + this.type + ': .shading has been removed. Use the boolean .flatShading instead.');
					this.flatShading = newValue === FlatShading ? true : false;
					continue;
				}

				const currentValue = this[key];

				if (currentValue === undefined) {
					console.warn('THREE.' + this.type + ': \'' + key + '\' is not a property of this material.');
					continue;
				}

				if (currentValue && currentValue.isColor) {
					currentValue.set(newValue);
				} else if (currentValue && currentValue.isVector3 && newValue && newValue.isVector3) {
					currentValue.copy(newValue);
				} else {
					this[key] = newValue;
				}
			}
		}

		toJSON(meta) {
			const isRoot = meta === undefined || typeof meta === 'string';

			if (isRoot) {
				meta = {
					textures: {},
					images: {}
				};
			}

			const data = {
				metadata: {
					version: 4.5,
					type: 'Material',
					generator: 'Material.toJSON'
				}
			}; // standard Material serialization

			data.uuid = this.uuid;
			data.type = this.type;
			if (this.name !== '') data.name = this.name;
			if (this.color && this.color.isColor) data.color = this.color.getHex();
			if (this.roughness !== undefined) data.roughness = this.roughness;
			if (this.metalness !== undefined) data.metalness = this.metalness;
			if (this.sheen !== undefined) data.sheen = this.sheen;
			if (this.sheenTint && this.sheenTint.isColor) data.sheenTint = this.sheenTint.getHex();
			if (this.sheenRoughness !== undefined) data.sheenRoughness = this.sheenRoughness;
			if (this.emissive && this.emissive.isColor) data.emissive = this.emissive.getHex();
			if (this.emissiveIntensity && this.emissiveIntensity !== 1) data.emissiveIntensity = this.emissiveIntensity;
			if (this.specular && this.specular.isColor) data.specular = this.specular.getHex();
			if (this.specularIntensity !== undefined) data.specularIntensity = this.specularIntensity;
			if (this.specularTint && this.specularTint.isColor) data.specularTint = this.specularTint.getHex();
			if (this.shininess !== undefined) data.shininess = this.shininess;
			if (this.clearcoat !== undefined) data.clearcoat = this.clearcoat;
			if (this.clearcoatRoughness !== undefined) data.clearcoatRoughness = this.clearcoatRoughness;

			if (this.clearcoatMap && this.clearcoatMap.isTexture) {
				data.clearcoatMap = this.clearcoatMap.toJSON(meta).uuid;
			}

			if (this.clearcoatRoughnessMap && this.clearcoatRoughnessMap.isTexture) {
				data.clearcoatRoughnessMap = this.clearcoatRoughnessMap.toJSON(meta).uuid;
			}

			if (this.clearcoatNormalMap && this.clearcoatNormalMap.isTexture) {
				data.clearcoatNormalMap = this.clearcoatNormalMap.toJSON(meta).uuid;
				data.clearcoatNormalScale = this.clearcoatNormalScale.toArray();
			}

			if (this.map && this.map.isTexture) data.map = this.map.toJSON(meta).uuid;
			if (this.matcap && this.matcap.isTexture) data.matcap = this.matcap.toJSON(meta).uuid;
			if (this.alphaMap && this.alphaMap.isTexture) data.alphaMap = this.alphaMap.toJSON(meta).uuid;

			if (this.lightMap && this.lightMap.isTexture) {
				data.lightMap = this.lightMap.toJSON(meta).uuid;
				data.lightMapIntensity = this.lightMapIntensity;
			}

			if (this.aoMap && this.aoMap.isTexture) {
				data.aoMap = this.aoMap.toJSON(meta).uuid;
				data.aoMapIntensity = this.aoMapIntensity;
			}

			if (this.bumpMap && this.bumpMap.isTexture) {
				data.bumpMap = this.bumpMap.toJSON(meta).uuid;
				data.bumpScale = this.bumpScale;
			}

			if (this.normalMap && this.normalMap.isTexture) {
				data.normalMap = this.normalMap.toJSON(meta).uuid;
				data.normalMapType = this.normalMapType;
				data.normalScale = this.normalScale.toArray();
			}

			if (this.displacementMap && this.displacementMap.isTexture) {
				data.displacementMap = this.displacementMap.toJSON(meta).uuid;
				data.displacementScale = this.displacementScale;
				data.displacementBias = this.displacementBias;
			}

			if (this.roughnessMap && this.roughnessMap.isTexture) data.roughnessMap = this.roughnessMap.toJSON(meta).uuid;
			if (this.metalnessMap && this.metalnessMap.isTexture) data.metalnessMap = this.metalnessMap.toJSON(meta).uuid;
			if (this.emissiveMap && this.emissiveMap.isTexture) data.emissiveMap = this.emissiveMap.toJSON(meta).uuid;
			if (this.specularMap && this.specularMap.isTexture) data.specularMap = this.specularMap.toJSON(meta).uuid;
			if (this.specularIntensityMap && this.specularIntensityMap.isTexture) data.specularIntensityMap = this.specularIntensityMap.toJSON(meta).uuid;
			if (this.specularTintMap && this.specularTintMap.isTexture) data.specularTintMap = this.specularTintMap.toJSON(meta).uuid;

			if (this.envMap && this.envMap.isTexture) {
				data.envMap = this.envMap.toJSON(meta).uuid;
				if (this.combine !== undefined) data.combine = this.combine;
			}

			if (this.envMapIntensity !== undefined) data.envMapIntensity = this.envMapIntensity;
			if (this.reflectivity !== undefined) data.reflectivity = this.reflectivity;
			if (this.refractionRatio !== undefined) data.refractionRatio = this.refractionRatio;

			if (this.gradientMap && this.gradientMap.isTexture) {
				data.gradientMap = this.gradientMap.toJSON(meta).uuid;
			}

			if (this.transmission !== undefined) data.transmission = this.transmission;
			if (this.transmissionMap && this.transmissionMap.isTexture) data.transmissionMap = this.transmissionMap.toJSON(meta).uuid;
			if (this.thickness !== undefined) data.thickness = this.thickness;
			if (this.thicknessMap && this.thicknessMap.isTexture) data.thicknessMap = this.thicknessMap.toJSON(meta).uuid;
			if (this.attenuationDistance !== undefined) data.attenuationDistance = this.attenuationDistance;
			if (this.attenuationTint !== undefined) data.attenuationTint = this.attenuationTint.getHex();
			if (this.size !== undefined) data.size = this.size;
			if (this.shadowSide !== null) data.shadowSide = this.shadowSide;
			if (this.sizeAttenuation !== undefined) data.sizeAttenuation = this.sizeAttenuation;
			if (this.blending !== NormalBlending) data.blending = this.blending;
			if (this.side !== FrontSide) data.side = this.side;
			if (this.vertexColors) data.vertexColors = true;
			if (this.opacity < 1) data.opacity = this.opacity;
			if (this.format !== RGBAFormat) data.format = this.format;
			if (this.transparent === true) data.transparent = this.transparent;
			data.depthFunc = this.depthFunc;
			data.depthTest = this.depthTest;
			data.depthWrite = this.depthWrite;
			data.colorWrite = this.colorWrite;
			data.stencilWrite = this.stencilWrite;
			data.stencilWriteMask = this.stencilWriteMask;
			data.stencilFunc = this.stencilFunc;
			data.stencilRef = this.stencilRef;
			data.stencilFuncMask = this.stencilFuncMask;
			data.stencilFail = this.stencilFail;
			data.stencilZFail = this.stencilZFail;
			data.stencilZPass = this.stencilZPass; // rotation (SpriteMaterial)

			if (this.rotation && this.rotation !== 0) data.rotation = this.rotation;
			if (this.polygonOffset === true) data.polygonOffset = true;
			if (this.polygonOffsetFactor !== 0) data.polygonOffsetFactor = this.polygonOffsetFactor;
			if (this.polygonOffsetUnits !== 0) data.polygonOffsetUnits = this.polygonOffsetUnits;
			if (this.linewidth && this.linewidth !== 1) data.linewidth = this.linewidth;
			if (this.dashSize !== undefined) data.dashSize = this.dashSize;
			if (this.gapSize !== undefined) data.gapSize = this.gapSize;
			if (this.scale !== undefined) data.scale = this.scale;
			if (this.dithering === true) data.dithering = true;
			if (this.alphaTest > 0) data.alphaTest = this.alphaTest;
			if (this.alphaToCoverage === true) data.alphaToCoverage = this.alphaToCoverage;
			if (this.premultipliedAlpha === true) data.premultipliedAlpha = this.premultipliedAlpha;
			if (this.wireframe === true) data.wireframe = this.wireframe;
			if (this.wireframeLinewidth > 1) data.wireframeLinewidth = this.wireframeLinewidth;
			if (this.wireframeLinecap !== 'round') data.wireframeLinecap = this.wireframeLinecap;
			if (this.wireframeLinejoin !== 'round') data.wireframeLinejoin = this.wireframeLinejoin;
			if (this.flatShading === true) data.flatShading = this.flatShading;
			if (this.visible === false) data.visible = false;
			if (this.toneMapped === false) data.toneMapped = false;
			if (JSON.stringify(this.userData) !== '{}') data.userData = this.userData; // TODO: Copied from Object3D.toJSON

			function extractFromCache(cache) {
				const values = [];

				for (const key in cache) {
					const data = cache[key];
					delete data.metadata;
					values.push(data);
				}

				return values;
			}

			if (isRoot) {
				const textures = extractFromCache(meta.textures);
				const images = extractFromCache(meta.images);
				if (textures.length > 0) data.textures = textures;
				if (images.length > 0) data.images = images;
			}

			return data;
		}

		clone() {
			return new this.constructor().copy(this);
		}

		copy(source) {
			this.name = source.name;
			this.fog = source.fog;
			this.blending = source.blending;
			this.side = source.side;
			this.vertexColors = source.vertexColors;
			this.opacity = source.opacity;
			this.format = source.format;
			this.transparent = source.transparent;
			this.blendSrc = source.blendSrc;
			this.blendDst = source.blendDst;
			this.blendEquation = source.blendEquation;
			this.blendSrcAlpha = source.blendSrcAlpha;
			this.blendDstAlpha = source.blendDstAlpha;
			this.blendEquationAlpha = source.blendEquationAlpha;
			this.depthFunc = source.depthFunc;
			this.depthTest = source.depthTest;
			this.depthWrite = source.depthWrite;
			this.stencilWriteMask = source.stencilWriteMask;
			this.stencilFunc = source.stencilFunc;
			this.stencilRef = source.stencilRef;
			this.stencilFuncMask = source.stencilFuncMask;
			this.stencilFail = source.stencilFail;
			this.stencilZFail = source.stencilZFail;
			this.stencilZPass = source.stencilZPass;
			this.stencilWrite = source.stencilWrite;
			const srcPlanes = source.clippingPlanes;
			let dstPlanes = null;

			if (srcPlanes !== null) {
				const n = srcPlanes.length;
				dstPlanes = new Array(n);

				for (let i = 0; i !== n; ++i) {
					dstPlanes[i] = srcPlanes[i].clone();
				}
			}

			this.clippingPlanes = dstPlanes;
			this.clipIntersection = source.clipIntersection;
			this.clipShadows = source.clipShadows;
			this.shadowSide = source.shadowSide;
			this.colorWrite = source.colorWrite;
			this.precision = source.precision;
			this.polygonOffset = source.polygonOffset;
			this.polygonOffsetFactor = source.polygonOffsetFactor;
			this.polygonOffsetUnits = source.polygonOffsetUnits;
			this.dithering = source.dithering;
			this.alphaTest = source.alphaTest;
			this.alphaToCoverage = source.alphaToCoverage;
			this.premultipliedAlpha = source.premultipliedAlpha;
			this.visible = source.visible;
			this.toneMapped = source.toneMapped;
			this.userData = JSON.parse(JSON.stringify(source.userData));
			return this;
		}

		dispose() {
			this.dispatchEvent({
				type: 'dispose'
			});
		}

		set needsUpdate(value) {
			if (value === true) this.version++;
		}

	}

	Material.prototype.isMaterial = true;

	const _colorKeywords = {
		'aliceblue': 0xF0F8FF,
		'antiquewhite': 0xFAEBD7,
		'aqua': 0x00FFFF,
		'aquamarine': 0x7FFFD4,
		'azure': 0xF0FFFF,
		'beige': 0xF5F5DC,
		'bisque': 0xFFE4C4,
		'black': 0x000000,
		'blanchedalmond': 0xFFEBCD,
		'blue': 0x0000FF,
		'blueviolet': 0x8A2BE2,
		'brown': 0xA52A2A,
		'burlywood': 0xDEB887,
		'cadetblue': 0x5F9EA0,
		'chartreuse': 0x7FFF00,
		'chocolate': 0xD2691E,
		'coral': 0xFF7F50,
		'cornflowerblue': 0x6495ED,
		'cornsilk': 0xFFF8DC,
		'crimson': 0xDC143C,
		'cyan': 0x00FFFF,
		'darkblue': 0x00008B,
		'darkcyan': 0x008B8B,
		'darkgoldenrod': 0xB8860B,
		'darkgray': 0xA9A9A9,
		'darkgreen': 0x006400,
		'darkgrey': 0xA9A9A9,
		'darkkhaki': 0xBDB76B,
		'darkmagenta': 0x8B008B,
		'darkolivegreen': 0x556B2F,
		'darkorange': 0xFF8C00,
		'darkorchid': 0x9932CC,
		'darkred': 0x8B0000,
		'darksalmon': 0xE9967A,
		'darkseagreen': 0x8FBC8F,
		'darkslateblue': 0x483D8B,
		'darkslategray': 0x2F4F4F,
		'darkslategrey': 0x2F4F4F,
		'darkturquoise': 0x00CED1,
		'darkviolet': 0x9400D3,
		'deeppink': 0xFF1493,
		'deepskyblue': 0x00BFFF,
		'dimgray': 0x696969,
		'dimgrey': 0x696969,
		'dodgerblue': 0x1E90FF,
		'firebrick': 0xB22222,
		'floralwhite': 0xFFFAF0,
		'forestgreen': 0x228B22,
		'fuchsia': 0xFF00FF,
		'gainsboro': 0xDCDCDC,
		'ghostwhite': 0xF8F8FF,
		'gold': 0xFFD700,
		'goldenrod': 0xDAA520,
		'gray': 0x808080,
		'green': 0x008000,
		'greenyellow': 0xADFF2F,
		'grey': 0x808080,
		'honeydew': 0xF0FFF0,
		'hotpink': 0xFF69B4,
		'indianred': 0xCD5C5C,
		'indigo': 0x4B0082,
		'ivory': 0xFFFFF0,
		'khaki': 0xF0E68C,
		'lavender': 0xE6E6FA,
		'lavenderblush': 0xFFF0F5,
		'lawngreen': 0x7CFC00,
		'lemonchiffon': 0xFFFACD,
		'lightblue': 0xADD8E6,
		'lightcoral': 0xF08080,
		'lightcyan': 0xE0FFFF,
		'lightgoldenrodyellow': 0xFAFAD2,
		'lightgray': 0xD3D3D3,
		'lightgreen': 0x90EE90,
		'lightgrey': 0xD3D3D3,
		'lightpink': 0xFFB6C1,
		'lightsalmon': 0xFFA07A,
		'lightseagreen': 0x20B2AA,
		'lightskyblue': 0x87CEFA,
		'lightslategray': 0x778899,
		'lightslategrey': 0x778899,
		'lightsteelblue': 0xB0C4DE,
		'lightyellow': 0xFFFFE0,
		'lime': 0x00FF00,
		'limegreen': 0x32CD32,
		'linen': 0xFAF0E6,
		'magenta': 0xFF00FF,
		'maroon': 0x800000,
		'mediumaquamarine': 0x66CDAA,
		'mediumblue': 0x0000CD,
		'mediumorchid': 0xBA55D3,
		'mediumpurple': 0x9370DB,
		'mediumseagreen': 0x3CB371,
		'mediumslateblue': 0x7B68EE,
		'mediumspringgreen': 0x00FA9A,
		'mediumturquoise': 0x48D1CC,
		'mediumvioletred': 0xC71585,
		'midnightblue': 0x191970,
		'mintcream': 0xF5FFFA,
		'mistyrose': 0xFFE4E1,
		'moccasin': 0xFFE4B5,
		'navajowhite': 0xFFDEAD,
		'navy': 0x000080,
		'oldlace': 0xFDF5E6,
		'olive': 0x808000,
		'olivedrab': 0x6B8E23,
		'orange': 0xFFA500,
		'orangered': 0xFF4500,
		'orchid': 0xDA70D6,
		'palegoldenrod': 0xEEE8AA,
		'palegreen': 0x98FB98,
		'paleturquoise': 0xAFEEEE,
		'palevioletred': 0xDB7093,
		'papayawhip': 0xFFEFD5,
		'peachpuff': 0xFFDAB9,
		'peru': 0xCD853F,
		'pink': 0xFFC0CB,
		'plum': 0xDDA0DD,
		'powderblue': 0xB0E0E6,
		'purple': 0x800080,
		'rebeccapurple': 0x663399,
		'red': 0xFF0000,
		'rosybrown': 0xBC8F8F,
		'royalblue': 0x4169E1,
		'saddlebrown': 0x8B4513,
		'salmon': 0xFA8072,
		'sandybrown': 0xF4A460,
		'seagreen': 0x2E8B57,
		'seashell': 0xFFF5EE,
		'sienna': 0xA0522D,
		'silver': 0xC0C0C0,
		'skyblue': 0x87CEEB,
		'slateblue': 0x6A5ACD,
		'slategray': 0x708090,
		'slategrey': 0x708090,
		'snow': 0xFFFAFA,
		'springgreen': 0x00FF7F,
		'steelblue': 0x4682B4,
		'tan': 0xD2B48C,
		'teal': 0x008080,
		'thistle': 0xD8BFD8,
		'tomato': 0xFF6347,
		'turquoise': 0x40E0D0,
		'violet': 0xEE82EE,
		'wheat': 0xF5DEB3,
		'white': 0xFFFFFF,
		'whitesmoke': 0xF5F5F5,
		'yellow': 0xFFFF00,
		'yellowgreen': 0x9ACD32
	};
	const _hslA = {
		h: 0,
		s: 0,
		l: 0
	};
	const _hslB = {
		h: 0,
		s: 0,
		l: 0
	};

	function hue2rgb(p, q, t) {
		if (t < 0) t += 1;
		if (t > 1) t -= 1;
		if (t < 1 / 6) return p + (q - p) * 6 * t;
		if (t < 1 / 2) return q;
		if (t < 2 / 3) return p + (q - p) * 6 * (2 / 3 - t);
		return p;
	}

	function SRGBToLinear(c) {
		return c < 0.04045 ? c * 0.0773993808 : Math.pow(c * 0.9478672986 + 0.0521327014, 2.4);
	}

	function LinearToSRGB(c) {
		return c < 0.0031308 ? c * 12.92 : 1.055 * Math.pow(c, 0.41666) - 0.055;
	}

	class Color {
		constructor(r, g, b) {
			if (g === undefined && b === undefined) {
				// r is THREE.Color, hex or string
				return this.set(r);
			}

			return this.setRGB(r, g, b);
		}

		set(value) {
			if (value && value.isColor) {
				this.copy(value);
			} else if (typeof value === 'number') {
				this.setHex(value);
			} else if (typeof value === 'string') {
				this.setStyle(value);
			}

			return this;
		}

		setScalar(scalar) {
			this.r = scalar;
			this.g = scalar;
			this.b = scalar;
			return this;
		}

		setHex(hex) {
			hex = Math.floor(hex);
			this.r = (hex >> 16 & 255) / 255;
			this.g = (hex >> 8 & 255) / 255;
			this.b = (hex & 255) / 255;
			return this;
		}

		setRGB(r, g, b) {
			this.r = r;
			this.g = g;
			this.b = b;
			return this;
		}

		setHSL(h, s, l) {
			// h,s,l ranges are in 0.0 - 1.0
			h = euclideanModulo(h, 1);
			s = clamp(s, 0, 1);
			l = clamp(l, 0, 1);

			if (s === 0) {
				this.r = this.g = this.b = l;
			} else {
				const p = l <= 0.5 ? l * (1 + s) : l + s - l * s;
				const q = 2 * l - p;
				this.r = hue2rgb(q, p, h + 1 / 3);
				this.g = hue2rgb(q, p, h);
				this.b = hue2rgb(q, p, h - 1 / 3);
			}

			return this;
		}

		setStyle(style) {
			function handleAlpha(string) {
				if (string === undefined) return;

				if (parseFloat(string) < 1) {
					console.warn('THREE.Color: Alpha component of ' + style + ' will be ignored.');
				}
			}

			let m;

			if (m = /^((?:rgb|hsl)a?)\(([^\)]*)\)/.exec(style)) {
				// rgb / hsl
				let color;
				const name = m[1];
				const components = m[2];

				switch (name) {
					case 'rgb':
					case 'rgba':
						if (color = /^\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*(?:,\s*(\d*\.?\d+)\s*)?$/.exec(components)) {
							// rgb(255,0,0) rgba(255,0,0,0.5)
							this.r = Math.min(255, parseInt(color[1], 10)) / 255;
							this.g = Math.min(255, parseInt(color[2], 10)) / 255;
							this.b = Math.min(255, parseInt(color[3], 10)) / 255;
							handleAlpha(color[4]);
							return this;
						}

						if (color = /^\s*(\d+)\%\s*,\s*(\d+)\%\s*,\s*(\d+)\%\s*(?:,\s*(\d*\.?\d+)\s*)?$/.exec(components)) {
							// rgb(100%,0%,0%) rgba(100%,0%,0%,0.5)
							this.r = Math.min(100, parseInt(color[1], 10)) / 100;
							this.g = Math.min(100, parseInt(color[2], 10)) / 100;
							this.b = Math.min(100, parseInt(color[3], 10)) / 100;
							handleAlpha(color[4]);
							return this;
						}

						break;

					case 'hsl':
					case 'hsla':
						if (color = /^\s*(\d*\.?\d+)\s*,\s*(\d+)\%\s*,\s*(\d+)\%\s*(?:,\s*(\d*\.?\d+)\s*)?$/.exec(components)) {
							// hsl(120,50%,50%) hsla(120,50%,50%,0.5)
							const h = parseFloat(color[1]) / 360;
							const s = parseInt(color[2], 10) / 100;
							const l = parseInt(color[3], 10) / 100;
							handleAlpha(color[4]);
							return this.setHSL(h, s, l);
						}

						break;
				}
			} else if (m = /^\#([A-Fa-f\d]+)$/.exec(style)) {
				// hex color
				const hex = m[1];
				const size = hex.length;

				if (size === 3) {
					// #ff0
					this.r = parseInt(hex.charAt(0) + hex.charAt(0), 16) / 255;
					this.g = parseInt(hex.charAt(1) + hex.charAt(1), 16) / 255;
					this.b = parseInt(hex.charAt(2) + hex.charAt(2), 16) / 255;
					return this;
				} else if (size === 6) {
					// #ff0000
					this.r = parseInt(hex.charAt(0) + hex.charAt(1), 16) / 255;
					this.g = parseInt(hex.charAt(2) + hex.charAt(3), 16) / 255;
					this.b = parseInt(hex.charAt(4) + hex.charAt(5), 16) / 255;
					return this;
				}
			}

			if (style && style.length > 0) {
				return this.setColorName(style);
			}

			return this;
		}

		setColorName(style) {
			// color keywords
			const hex = _colorKeywords[style.toLowerCase()];

			if (hex !== undefined) {
				// red
				this.setHex(hex);
			} else {
				// unknown color
				console.warn('THREE.Color: Unknown color ' + style);
			}

			return this;
		}

		clone() {
			return new this.constructor(this.r, this.g, this.b);
		}

		copy(color) {
			this.r = color.r;
			this.g = color.g;
			this.b = color.b;
			return this;
		}

		copyGammaToLinear(color, gammaFactor = 2.0) {
			this.r = Math.pow(color.r, gammaFactor);
			this.g = Math.pow(color.g, gammaFactor);
			this.b = Math.pow(color.b, gammaFactor);
			return this;
		}

		copyLinearToGamma(color, gammaFactor = 2.0) {
			const safeInverse = gammaFactor > 0 ? 1.0 / gammaFactor : 1.0;
			this.r = Math.pow(color.r, safeInverse);
			this.g = Math.pow(color.g, safeInverse);
			this.b = Math.pow(color.b, safeInverse);
			return this;
		}

		convertGammaToLinear(gammaFactor) {
			this.copyGammaToLinear(this, gammaFactor);
			return this;
		}

		convertLinearToGamma(gammaFactor) {
			this.copyLinearToGamma(this, gammaFactor);
			return this;
		}

		copySRGBToLinear(color) {
			this.r = SRGBToLinear(color.r);
			this.g = SRGBToLinear(color.g);
			this.b = SRGBToLinear(color.b);
			return this;
		}

		copyLinearToSRGB(color) {
			this.r = LinearToSRGB(color.r);
			this.g = LinearToSRGB(color.g);
			this.b = LinearToSRGB(color.b);
			return this;
		}

		convertSRGBToLinear() {
			this.copySRGBToLinear(this);
			return this;
		}

		convertLinearToSRGB() {
			this.copyLinearToSRGB(this);
			return this;
		}

		getHex() {
			return this.r * 255 << 16 ^ this.g * 255 << 8 ^ this.b * 255 << 0;
		}

		getHexString() {
			return ('000000' + this.getHex().toString(16)).slice(-6);
		}

		getHSL(target) {
			// h,s,l ranges are in 0.0 - 1.0
			const r = this.r,
						g = this.g,
						b = this.b;
			const max = Math.max(r, g, b);
			const min = Math.min(r, g, b);
			let hue, saturation;
			const lightness = (min + max) / 2.0;

			if (min === max) {
				hue = 0;
				saturation = 0;
			} else {
				const delta = max - min;
				saturation = lightness <= 0.5 ? delta / (max + min) : delta / (2 - max - min);

				switch (max) {
					case r:
						hue = (g - b) / delta + (g < b ? 6 : 0);
						break;

					case g:
						hue = (b - r) / delta + 2;
						break;

					case b:
						hue = (r - g) / delta + 4;
						break;
				}

				hue /= 6;
			}

			target.h = hue;
			target.s = saturation;
			target.l = lightness;
			return target;
		}

		getStyle() {
			return 'rgb(' + (this.r * 255 | 0) + ',' + (this.g * 255 | 0) + ',' + (this.b * 255 | 0) + ')';
		}

		offsetHSL(h, s, l) {
			this.getHSL(_hslA);
			_hslA.h += h;
			_hslA.s += s;
			_hslA.l += l;
			this.setHSL(_hslA.h, _hslA.s, _hslA.l);
			return this;
		}

		add(color) {
			this.r += color.r;
			this.g += color.g;
			this.b += color.b;
			return this;
		}

		addColors(color1, color2) {
			this.r = color1.r + color2.r;
			this.g = color1.g + color2.g;
			this.b = color1.b + color2.b;
			return this;
		}

		addScalar(s) {
			this.r += s;
			this.g += s;
			this.b += s;
			return this;
		}

		sub(color) {
			this.r = Math.max(0, this.r - color.r);
			this.g = Math.max(0, this.g - color.g);
			this.b = Math.max(0, this.b - color.b);
			return this;
		}

		multiply(color) {
			this.r *= color.r;
			this.g *= color.g;
			this.b *= color.b;
			return this;
		}

		multiplyScalar(s) {
			this.r *= s;
			this.g *= s;
			this.b *= s;
			return this;
		}

		lerp(color, alpha) {
			this.r += (color.r - this.r) * alpha;
			this.g += (color.g - this.g) * alpha;
			this.b += (color.b - this.b) * alpha;
			return this;
		}

		lerpColors(color1, color2, alpha) {
			this.r = color1.r + (color2.r - color1.r) * alpha;
			this.g = color1.g + (color2.g - color1.g) * alpha;
			this.b = color1.b + (color2.b - color1.b) * alpha;
			return this;
		}

		lerpHSL(color, alpha) {
			this.getHSL(_hslA);
			color.getHSL(_hslB);
			const h = lerp(_hslA.h, _hslB.h, alpha);
			const s = lerp(_hslA.s, _hslB.s, alpha);
			const l = lerp(_hslA.l, _hslB.l, alpha);
			this.setHSL(h, s, l);
			return this;
		}

		equals(c) {
			return c.r === this.r && c.g === this.g && c.b === this.b;
		}

		fromArray(array, offset = 0) {
			this.r = array[offset];
			this.g = array[offset + 1];
			this.b = array[offset + 2];
			return this;
		}

		toArray(array = [], offset = 0) {
			array[offset] = this.r;
			array[offset + 1] = this.g;
			array[offset + 2] = this.b;
			return array;
		}

		fromBufferAttribute(attribute, index) {
			this.r = attribute.getX(index);
			this.g = attribute.getY(index);
			this.b = attribute.getZ(index);

			if (attribute.normalized === true) {
				// assuming Uint8Array
				this.r /= 255;
				this.g /= 255;
				this.b /= 255;
			}

			return this;
		}

		toJSON() {
			return this.getHex();
		}

	}

	Color.NAMES = _colorKeywords;
	Color.prototype.isColor = true;
	Color.prototype.r = 1;
	Color.prototype.g = 1;
	Color.prototype.b = 1;

	/**
	 * parameters = {
	 *	color: <hex>,
	 *	opacity: <float>,
	 *	map: new THREE.Texture( <Image> ),
	 *
	 *	lightMap: new THREE.Texture( <Image> ),
	 *	lightMapIntensity: <float>
	 *
	 *	aoMap: new THREE.Texture( <Image> ),
	 *	aoMapIntensity: <float>
	 *
	 *	specularMap: new THREE.Texture( <Image> ),
	 *
	 *	alphaMap: new THREE.Texture( <Image> ),
	 *
	 *	envMap: new THREE.CubeTexture( [posx, negx, posy, negy, posz, negz] ),
	 *	combine: THREE.Multiply,
	 *	reflectivity: <float>,
	 *	refractionRatio: <float>,
	 *
	 *	depthTest: <bool>,
	 *	depthWrite: <bool>,
	 *
	 *	wireframe: <boolean>,
	 *	wireframeLinewidth: <float>,
	 * }
	 */

	class MeshBasicMaterial extends Material {
		constructor(parameters) {
			super();
			this.type = 'MeshBasicMaterial';
			this.color = new Color(0xffffff); // emissive

			this.map = null;
			this.lightMap = null;
			this.lightMapIntensity = 1.0;
			this.aoMap = null;
			this.aoMapIntensity = 1.0;
			this.specularMap = null;
			this.alphaMap = null;
			this.envMap = null;
			this.combine = MultiplyOperation;
			this.reflectivity = 1;
			this.refractionRatio = 0.98;
			this.wireframe = false;
			this.wireframeLinewidth = 1;
			this.wireframeLinecap = 'round';
			this.wireframeLinejoin = 'round';
			this.setValues(parameters);
		}

		copy(source) {
			super.copy(source);
			this.color.copy(source.color);
			this.map = source.map;
			this.lightMap = source.lightMap;
			this.lightMapIntensity = source.lightMapIntensity;
			this.aoMap = source.aoMap;
			this.aoMapIntensity = source.aoMapIntensity;
			this.specularMap = source.specularMap;
			this.alphaMap = source.alphaMap;
			this.envMap = source.envMap;
			this.combine = source.combine;
			this.reflectivity = source.reflectivity;
			this.refractionRatio = source.refractionRatio;
			this.wireframe = source.wireframe;
			this.wireframeLinewidth = source.wireframeLinewidth;
			this.wireframeLinecap = source.wireframeLinecap;
			this.wireframeLinejoin = source.wireframeLinejoin;
			return this;
		}

	}

	MeshBasicMaterial.prototype.isMeshBasicMaterial = true;

	const _vector$9 = /*@__PURE__*/new Vector3();

	const _vector2$1 = /*@__PURE__*/new Vector2();

	class BufferAttribute {
		constructor(array, itemSize, normalized) {
			if (Array.isArray(array)) {
				throw new TypeError('THREE.BufferAttribute: array should be a Typed Array.');
			}

			this.name = '';
			this.array = array;
			this.itemSize = itemSize;
			this.count = array !== undefined ? array.length / itemSize : 0;
			this.normalized = normalized === true;
			this.usage = StaticDrawUsage;
			this.updateRange = {
				offset: 0,
				count: -1
			};
			this.version = 0;
		}

		onUploadCallback() {}

		set needsUpdate(value) {
			if (value === true) this.version++;
		}

		setUsage(value) {
			this.usage = value;
			return this;
		}

		copy(source) {
			this.name = source.name;
			this.array = new source.array.constructor(source.array);
			this.itemSize = source.itemSize;
			this.count = source.count;
			this.normalized = source.normalized;
			this.usage = source.usage;
			return this;
		}

		copyAt(index1, attribute, index2) {
			index1 *= this.itemSize;
			index2 *= attribute.itemSize;

			for (let i = 0, l = this.itemSize; i < l; i++) {
				this.array[index1 + i] = attribute.array[index2 + i];
			}

			return this;
		}

		copyArray(array) {
			this.array.set(array);
			return this;
		}

		copyColorsArray(colors) {
			const array = this.array;
			let offset = 0;

			for (let i = 0, l = colors.length; i < l; i++) {
				let color = colors[i];

				if (color === undefined) {
					console.warn('THREE.BufferAttribute.copyColorsArray(): color is undefined', i);
					color = new Color();
				}

				array[offset++] = color.r;
				array[offset++] = color.g;
				array[offset++] = color.b;
			}

			return this;
		}

		copyVector2sArray(vectors) {
			const array = this.array;
			let offset = 0;

			for (let i = 0, l = vectors.length; i < l; i++) {
				let vector = vectors[i];

				if (vector === undefined) {
					console.warn('THREE.BufferAttribute.copyVector2sArray(): vector is undefined', i);
					vector = new Vector2();
				}

				array[offset++] = vector.x;
				array[offset++] = vector.y;
			}

			return this;
		}

		copyVector3sArray(vectors) {
			const array = this.array;
			let offset = 0;

			for (let i = 0, l = vectors.length; i < l; i++) {
				let vector = vectors[i];

				if (vector === undefined) {
					console.warn('THREE.BufferAttribute.copyVector3sArray(): vector is undefined', i);
					vector = new Vector3();
				}

				array[offset++] = vector.x;
				array[offset++] = vector.y;
				array[offset++] = vector.z;
			}

			return this;
		}

		copyVector4sArray(vectors) {
			const array = this.array;
			let offset = 0;

			for (let i = 0, l = vectors.length; i < l; i++) {
				let vector = vectors[i];

				if (vector === undefined) {
					console.warn('THREE.BufferAttribute.copyVector4sArray(): vector is undefined', i);
					vector = new Vector4();
				}

				array[offset++] = vector.x;
				array[offset++] = vector.y;
				array[offset++] = vector.z;
				array[offset++] = vector.w;
			}

			return this;
		}

		applyMatrix3(m) {
			if (this.itemSize === 2) {
				for (let i = 0, l = this.count; i < l; i++) {
					_vector2$1.fromBufferAttribute(this, i);

					_vector2$1.applyMatrix3(m);

					this.setXY(i, _vector2$1.x, _vector2$1.y);
				}
			} else if (this.itemSize === 3) {
				for (let i = 0, l = this.count; i < l; i++) {
					_vector$9.fromBufferAttribute(this, i);

					_vector$9.applyMatrix3(m);

					this.setXYZ(i, _vector$9.x, _vector$9.y, _vector$9.z);
				}
			}

			return this;
		}

		applyMatrix4(m) {
			for (let i = 0, l = this.count; i < l; i++) {
				_vector$9.x = this.getX(i);
				_vector$9.y = this.getY(i);
				_vector$9.z = this.getZ(i);

				_vector$9.applyMatrix4(m);

				this.setXYZ(i, _vector$9.x, _vector$9.y, _vector$9.z);
			}

			return this;
		}

		applyNormalMatrix(m) {
			for (let i = 0, l = this.count; i < l; i++) {
				_vector$9.x = this.getX(i);
				_vector$9.y = this.getY(i);
				_vector$9.z = this.getZ(i);

				_vector$9.applyNormalMatrix(m);

				this.setXYZ(i, _vector$9.x, _vector$9.y, _vector$9.z);
			}

			return this;
		}

		transformDirection(m) {
			for (let i = 0, l = this.count; i < l; i++) {
				_vector$9.x = this.getX(i);
				_vector$9.y = this.getY(i);
				_vector$9.z = this.getZ(i);

				_vector$9.transformDirection(m);

				this.setXYZ(i, _vector$9.x, _vector$9.y, _vector$9.z);
			}

			return this;
		}

		set(value, offset = 0) {
			this.array.set(value, offset);
			return this;
		}

		getX(index) {
			return this.array[index * this.itemSize];
		}

		setX(index, x) {
			this.array[index * this.itemSize] = x;
			return this;
		}

		getY(index) {
			return this.array[index * this.itemSize + 1];
		}

		setY(index, y) {
			this.array[index * this.itemSize + 1] = y;
			return this;
		}

		getZ(index) {
			return this.array[index * this.itemSize + 2];
		}

		setZ(index, z) {
			this.array[index * this.itemSize + 2] = z;
			return this;
		}

		getW(index) {
			return this.array[index * this.itemSize + 3];
		}

		setW(index, w) {
			this.array[index * this.itemSize + 3] = w;
			return this;
		}

		setXY(index, x, y) {
			index *= this.itemSize;
			this.array[index + 0] = x;
			this.array[index + 1] = y;
			return this;
		}

		setXYZ(index, x, y, z) {
			index *= this.itemSize;
			this.array[index + 0] = x;
			this.array[index + 1] = y;
			this.array[index + 2] = z;
			return this;
		}

		setXYZW(index, x, y, z, w) {
			index *= this.itemSize;
			this.array[index + 0] = x;
			this.array[index + 1] = y;
			this.array[index + 2] = z;
			this.array[index + 3] = w;
			return this;
		}

		onUpload(callback) {
			this.onUploadCallback = callback;
			return this;
		}

		clone() {
			return new this.constructor(this.array, this.itemSize).copy(this);
		}

		toJSON() {
			const data = {
				itemSize: this.itemSize,
				type: this.array.constructor.name,
				array: Array.prototype.slice.call(this.array),
				normalized: this.normalized
			};
			if (this.name !== '') data.name = this.name;
			if (this.usage !== StaticDrawUsage) data.usage = this.usage;
			if (this.updateRange.offset !== 0 || this.updateRange.count !== -1) data.updateRange = this.updateRange;
			return data;
		}

	}

	BufferAttribute.prototype.isBufferAttribute = true; //

	class Int8BufferAttribute extends BufferAttribute {
		constructor(array, itemSize, normalized) {
			super(new Int8Array(array), itemSize, normalized);
		}

	}

	class Uint8BufferAttribute extends BufferAttribute {
		constructor(array, itemSize, normalized) {
			super(new Uint8Array(array), itemSize, normalized);
		}

	}

	class Uint8ClampedBufferAttribute extends BufferAttribute {
		constructor(array, itemSize, normalized) {
			super(new Uint8ClampedArray(array), itemSize, normalized);
		}

	}

	class Int16BufferAttribute extends BufferAttribute {
		constructor(array, itemSize, normalized) {
			super(new Int16Array(array), itemSize, normalized);
		}

	}

	class Uint16BufferAttribute extends BufferAttribute {
		constructor(array, itemSize, normalized) {
			super(new Uint16Array(array), itemSize, normalized);
		}

	}

	class Int32BufferAttribute extends BufferAttribute {
		constructor(array, itemSize, normalized) {
			super(new Int32Array(array), itemSize, normalized);
		}

	}

	class Uint32BufferAttribute extends BufferAttribute {
		constructor(array, itemSize, normalized) {
			super(new Uint32Array(array), itemSize, normalized);
		}

	}

	class Float16BufferAttribute extends BufferAttribute {
		constructor(array, itemSize, normalized) {
			super(new Uint16Array(array), itemSize, normalized);
		}

	}

	Float16BufferAttribute.prototype.isFloat16BufferAttribute = true;

	class Float32BufferAttribute extends BufferAttribute {
		constructor(array, itemSize, normalized) {
			super(new Float32Array(array), itemSize, normalized);
		}

	}

	class Float64BufferAttribute extends BufferAttribute {
		constructor(array, itemSize, normalized) {
			super(new Float64Array(array), itemSize, normalized);
		}

	} //

	let _id = 0;

	const _m1 = /*@__PURE__*/new Matrix4();

	const _obj = /*@__PURE__*/new Object3D();

	const _offset = /*@__PURE__*/new Vector3();

	const _box$1 = /*@__PURE__*/new Box3();

	const _boxMorphTargets = /*@__PURE__*/new Box3();

	const _vector$8 = /*@__PURE__*/new Vector3();

	class BufferGeometry extends EventDispatcher {
		constructor() {
			super();
			Object.defineProperty(this, 'id', {
				value: _id++
			});
			this.uuid = generateUUID();
			this.name = '';
			this.type = 'BufferGeometry';
			this.index = null;
			this.attributes = {};
			this.morphAttributes = {};
			this.morphTargetsRelative = false;
			this.groups = [];
			this.boundingBox = null;
			this.boundingSphere = null;
			this.drawRange = {
				start: 0,
				count: Infinity
			};
			this.userData = {};
		}

		getIndex() {
			return this.index;
		}

		setIndex(index) {
			if (Array.isArray(index)) {
				this.index = new (arrayMax(index) > 65535 ? Uint32BufferAttribute : Uint16BufferAttribute)(index, 1);
			} else {
				this.index = index;
			}

			return this;
		}

		getAttribute(name) {
			return this.attributes[name];
		}

		setAttribute(name, attribute) {
			this.attributes[name] = attribute;
			return this;
		}

		deleteAttribute(name) {
			delete this.attributes[name];
			return this;
		}

		hasAttribute(name) {
			return this.attributes[name] !== undefined;
		}

		addGroup(start, count, materialIndex = 0) {
			this.groups.push({
				start: start,
				count: count,
				materialIndex: materialIndex
			});
		}

		clearGroups() {
			this.groups = [];
		}

		setDrawRange(start, count) {
			this.drawRange.start = start;
			this.drawRange.count = count;
		}

		applyMatrix4(matrix) {
			const position = this.attributes.position;

			if (position !== undefined) {
				position.applyMatrix4(matrix);
				position.needsUpdate = true;
			}

			const normal = this.attributes.normal;

			if (normal !== undefined) {
				const normalMatrix = new Matrix3().getNormalMatrix(matrix);
				normal.applyNormalMatrix(normalMatrix);
				normal.needsUpdate = true;
			}

			const tangent = this.attributes.tangent;

			if (tangent !== undefined) {
				tangent.transformDirection(matrix);
				tangent.needsUpdate = true;
			}

			if (this.boundingBox !== null) {
				this.computeBoundingBox();
			}

			if (this.boundingSphere !== null) {
				this.computeBoundingSphere();
			}

			return this;
		}

		applyQuaternion(q) {
			_m1.makeRotationFromQuaternion(q);

			this.applyMatrix4(_m1);
			return this;
		}

		rotateX(angle) {
			// rotate geometry around world x-axis
			_m1.makeRotationX(angle);

			this.applyMatrix4(_m1);
			return this;
		}

		rotateY(angle) {
			// rotate geometry around world y-axis
			_m1.makeRotationY(angle);

			this.applyMatrix4(_m1);
			return this;
		}

		rotateZ(angle) {
			// rotate geometry around world z-axis
			_m1.makeRotationZ(angle);

			this.applyMatrix4(_m1);
			return this;
		}

		translate(x, y, z) {
			// translate geometry
			_m1.makeTranslation(x, y, z);

			this.applyMatrix4(_m1);
			return this;
		}

		scale(x, y, z) {
			// scale geometry
			_m1.makeScale(x, y, z);

			this.applyMatrix4(_m1);
			return this;
		}

		lookAt(vector) {
			_obj.lookAt(vector);

			_obj.updateMatrix();

			this.applyMatrix4(_obj.matrix);
			return this;
		}

		center() {
			this.computeBoundingBox();
			this.boundingBox.getCenter(_offset).negate();
			this.translate(_offset.x, _offset.y, _offset.z);
			return this;
		}

		setFromPoints(points) {
			const position = [];

			for (let i = 0, l = points.length; i < l; i++) {
				const point = points[i];
				position.push(point.x, point.y, point.z || 0);
			}

			this.setAttribute('position', new Float32BufferAttribute(position, 3));
			return this;
		}

		computeBoundingBox() {
			if (this.boundingBox === null) {
				this.boundingBox = new Box3();
			}

			const position = this.attributes.position;
			const morphAttributesPosition = this.morphAttributes.position;

			if (position && position.isGLBufferAttribute) {
				console.error('THREE.BufferGeometry.computeBoundingBox(): GLBufferAttribute requires a manual bounding box. Alternatively set "mesh.frustumCulled" to "false".', this);
				this.boundingBox.set(new Vector3(-Infinity, -Infinity, -Infinity), new Vector3(+Infinity, +Infinity, +Infinity));
				return;
			}

			if (position !== undefined) {
				this.boundingBox.setFromBufferAttribute(position); // process morph attributes if present

				if (morphAttributesPosition) {
					for (let i = 0, il = morphAttributesPosition.length; i < il; i++) {
						const morphAttribute = morphAttributesPosition[i];

						_box$1.setFromBufferAttribute(morphAttribute);

						if (this.morphTargetsRelative) {
							_vector$8.addVectors(this.boundingBox.min, _box$1.min);

							this.boundingBox.expandByPoint(_vector$8);

							_vector$8.addVectors(this.boundingBox.max, _box$1.max);

							this.boundingBox.expandByPoint(_vector$8);
						} else {
							this.boundingBox.expandByPoint(_box$1.min);
							this.boundingBox.expandByPoint(_box$1.max);
						}
					}
				}
			} else {
				this.boundingBox.makeEmpty();
			}

			if (isNaN(this.boundingBox.min.x) || isNaN(this.boundingBox.min.y) || isNaN(this.boundingBox.min.z)) {
				console.error('THREE.BufferGeometry.computeBoundingBox(): Computed min/max have NaN values. The "position" attribute is likely to have NaN values.', this);
			}
		}

		computeBoundingSphere() {
			if (this.boundingSphere === null) {
				this.boundingSphere = new Sphere();
			}

			const position = this.attributes.position;
			const morphAttributesPosition = this.morphAttributes.position;

			if (position && position.isGLBufferAttribute) {
				console.error('THREE.BufferGeometry.computeBoundingSphere(): GLBufferAttribute requires a manual bounding sphere. Alternatively set "mesh.frustumCulled" to "false".', this);
				this.boundingSphere.set(new Vector3(), Infinity);
				return;
			}

			if (position) {
				// first, find the center of the bounding sphere
				const center = this.boundingSphere.center;

				_box$1.setFromBufferAttribute(position); // process morph attributes if present


				if (morphAttributesPosition) {
					for (let i = 0, il = morphAttributesPosition.length; i < il; i++) {
						const morphAttribute = morphAttributesPosition[i];

						_boxMorphTargets.setFromBufferAttribute(morphAttribute);

						if (this.morphTargetsRelative) {
							_vector$8.addVectors(_box$1.min, _boxMorphTargets.min);

							_box$1.expandByPoint(_vector$8);

							_vector$8.addVectors(_box$1.max, _boxMorphTargets.max);

							_box$1.expandByPoint(_vector$8);
						} else {
							_box$1.expandByPoint(_boxMorphTargets.min);

							_box$1.expandByPoint(_boxMorphTargets.max);
						}
					}
				}

				_box$1.getCenter(center); // second, try to find a boundingSphere with a radius smaller than the
				// boundingSphere of the boundingBox: sqrt(3) smaller in the best case


				let maxRadiusSq = 0;

				for (let i = 0, il = position.count; i < il; i++) {
					_vector$8.fromBufferAttribute(position, i);

					maxRadiusSq = Math.max(maxRadiusSq, center.distanceToSquared(_vector$8));
				} // process morph attributes if present


				if (morphAttributesPosition) {
					for (let i = 0, il = morphAttributesPosition.length; i < il; i++) {
						const morphAttribute = morphAttributesPosition[i];
						const morphTargetsRelative = this.morphTargetsRelative;

						for (let j = 0, jl = morphAttribute.count; j < jl; j++) {
							_vector$8.fromBufferAttribute(morphAttribute, j);

							if (morphTargetsRelative) {
								_offset.fromBufferAttribute(position, j);

								_vector$8.add(_offset);
							}

							maxRadiusSq = Math.max(maxRadiusSq, center.distanceToSquared(_vector$8));
						}
					}
				}

				this.boundingSphere.radius = Math.sqrt(maxRadiusSq);

				if (isNaN(this.boundingSphere.radius)) {
					console.error('THREE.BufferGeometry.computeBoundingSphere(): Computed radius is NaN. The "position" attribute is likely to have NaN values.', this);
				}
			}
		}

		computeTangents() {
			const index = this.index;
			const attributes = this.attributes; // based on http://www.terathon.com/code/tangent.html
			// (per vertex tangents)

			if (index === null || attributes.position === undefined || attributes.normal === undefined || attributes.uv === undefined) {
				console.error('THREE.BufferGeometry: .computeTangents() failed. Missing required attributes (index, position, normal or uv)');
				return;
			}

			const indices = index.array;
			const positions = attributes.position.array;
			const normals = attributes.normal.array;
			const uvs = attributes.uv.array;
			const nVertices = positions.length / 3;

			if (attributes.tangent === undefined) {
				this.setAttribute('tangent', new BufferAttribute(new Float32Array(4 * nVertices), 4));
			}

			const tangents = attributes.tangent.array;
			const tan1 = [],
						tan2 = [];

			for (let i = 0; i < nVertices; i++) {
				tan1[i] = new Vector3();
				tan2[i] = new Vector3();
			}

			const vA = new Vector3(),
						vB = new Vector3(),
						vC = new Vector3(),
						uvA = new Vector2(),
						uvB = new Vector2(),
						uvC = new Vector2(),
						sdir = new Vector3(),
						tdir = new Vector3();

			function handleTriangle(a, b, c) {
				vA.fromArray(positions, a * 3);
				vB.fromArray(positions, b * 3);
				vC.fromArray(positions, c * 3);
				uvA.fromArray(uvs, a * 2);
				uvB.fromArray(uvs, b * 2);
				uvC.fromArray(uvs, c * 2);
				vB.sub(vA);
				vC.sub(vA);
				uvB.sub(uvA);
				uvC.sub(uvA);
				const r = 1.0 / (uvB.x * uvC.y - uvC.x * uvB.y); // silently ignore degenerate uv triangles having coincident or colinear vertices

				if (!isFinite(r)) return;
				sdir.copy(vB).multiplyScalar(uvC.y).addScaledVector(vC, -uvB.y).multiplyScalar(r);
				tdir.copy(vC).multiplyScalar(uvB.x).addScaledVector(vB, -uvC.x).multiplyScalar(r);
				tan1[a].add(sdir);
				tan1[b].add(sdir);
				tan1[c].add(sdir);
				tan2[a].add(tdir);
				tan2[b].add(tdir);
				tan2[c].add(tdir);
			}

			let groups = this.groups;

			if (groups.length === 0) {
				groups = [{
					start: 0,
					count: indices.length
				}];
			}

			for (let i = 0, il = groups.length; i < il; ++i) {
				const group = groups[i];
				const start = group.start;
				const count = group.count;

				for (let j = start, jl = start + count; j < jl; j += 3) {
					handleTriangle(indices[j + 0], indices[j + 1], indices[j + 2]);
				}
			}

			const tmp = new Vector3(),
						tmp2 = new Vector3();
			const n = new Vector3(),
						n2 = new Vector3();

			function handleVertex(v) {
				n.fromArray(normals, v * 3);
				n2.copy(n);
				const t = tan1[v]; // Gram-Schmidt orthogonalize

				tmp.copy(t);
				tmp.sub(n.multiplyScalar(n.dot(t))).normalize(); // Calculate handedness

				tmp2.crossVectors(n2, t);
				const test = tmp2.dot(tan2[v]);
				const w = test < 0.0 ? -1.0 : 1.0;
				tangents[v * 4] = tmp.x;
				tangents[v * 4 + 1] = tmp.y;
				tangents[v * 4 + 2] = tmp.z;
				tangents[v * 4 + 3] = w;
			}

			for (let i = 0, il = groups.length; i < il; ++i) {
				const group = groups[i];
				const start = group.start;
				const count = group.count;

				for (let j = start, jl = start + count; j < jl; j += 3) {
					handleVertex(indices[j + 0]);
					handleVertex(indices[j + 1]);
					handleVertex(indices[j + 2]);
				}
			}
		}

		computeVertexNormals() {
			const index = this.index;
			const positionAttribute = this.getAttribute('position');

			if (positionAttribute !== undefined) {
				let normalAttribute = this.getAttribute('normal');

				if (normalAttribute === undefined) {
					normalAttribute = new BufferAttribute(new Float32Array(positionAttribute.count * 3), 3);
					this.setAttribute('normal', normalAttribute);
				} else {
					// reset existing normals to zero
					for (let i = 0, il = normalAttribute.count; i < il; i++) {
						normalAttribute.setXYZ(i, 0, 0, 0);
					}
				}

				const pA = new Vector3(),
							pB = new Vector3(),
							pC = new Vector3();
				const nA = new Vector3(),
							nB = new Vector3(),
							nC = new Vector3();
				const cb = new Vector3(),
							ab = new Vector3(); // indexed elements

				if (index) {
					for (let i = 0, il = index.count; i < il; i += 3) {
						const vA = index.getX(i + 0);
						const vB = index.getX(i + 1);
						const vC = index.getX(i + 2);
						pA.fromBufferAttribute(positionAttribute, vA);
						pB.fromBufferAttribute(positionAttribute, vB);
						pC.fromBufferAttribute(positionAttribute, vC);
						cb.subVectors(pC, pB);
						ab.subVectors(pA, pB);
						cb.cross(ab);
						nA.fromBufferAttribute(normalAttribute, vA);
						nB.fromBufferAttribute(normalAttribute, vB);
						nC.fromBufferAttribute(normalAttribute, vC);
						nA.add(cb);
						nB.add(cb);
						nC.add(cb);
						normalAttribute.setXYZ(vA, nA.x, nA.y, nA.z);
						normalAttribute.setXYZ(vB, nB.x, nB.y, nB.z);
						normalAttribute.setXYZ(vC, nC.x, nC.y, nC.z);
					}
				} else {
					// non-indexed elements (unconnected triangle soup)
					for (let i = 0, il = positionAttribute.count; i < il; i += 3) {
						pA.fromBufferAttribute(positionAttribute, i + 0);
						pB.fromBufferAttribute(positionAttribute, i + 1);
						pC.fromBufferAttribute(positionAttribute, i + 2);
						cb.subVectors(pC, pB);
						ab.subVectors(pA, pB);
						cb.cross(ab);
						normalAttribute.setXYZ(i + 0, cb.x, cb.y, cb.z);
						normalAttribute.setXYZ(i + 1, cb.x, cb.y, cb.z);
						normalAttribute.setXYZ(i + 2, cb.x, cb.y, cb.z);
					}
				}

				this.normalizeNormals();
				normalAttribute.needsUpdate = true;
			}
		}

		merge(geometry, offset) {
			if (!(geometry && geometry.isBufferGeometry)) {
				console.error('THREE.BufferGeometry.merge(): geometry not an instance of THREE.BufferGeometry.', geometry);
				return;
			}

			if (offset === undefined) {
				offset = 0;
				console.warn('THREE.BufferGeometry.merge(): Overwriting original geometry, starting at offset=0. ' + 'Use BufferGeometryUtils.mergeBufferGeometries() for lossless merge.');
			}

			const attributes = this.attributes;

			for (const key in attributes) {
				if (geometry.attributes[key] === undefined) continue;
				const attribute1 = attributes[key];
				const attributeArray1 = attribute1.array;
				const attribute2 = geometry.attributes[key];
				const attributeArray2 = attribute2.array;
				const attributeOffset = attribute2.itemSize * offset;
				const length = Math.min(attributeArray2.length, attributeArray1.length - attributeOffset);

				for (let i = 0, j = attributeOffset; i < length; i++, j++) {
					attributeArray1[j] = attributeArray2[i];
				}
			}

			return this;
		}

		normalizeNormals() {
			const normals = this.attributes.normal;

			for (let i = 0, il = normals.count; i < il; i++) {
				_vector$8.fromBufferAttribute(normals, i);

				_vector$8.normalize();

				normals.setXYZ(i, _vector$8.x, _vector$8.y, _vector$8.z);
			}
		}

		toNonIndexed() {
			function convertBufferAttribute(attribute, indices) {
				const array = attribute.array;
				const itemSize = attribute.itemSize;
				const normalized = attribute.normalized;
				const array2 = new array.constructor(indices.length * itemSize);
				let index = 0,
						index2 = 0;

				for (let i = 0, l = indices.length; i < l; i++) {
					if (attribute.isInterleavedBufferAttribute) {
						index = indices[i] * attribute.data.stride + attribute.offset;
					} else {
						index = indices[i] * itemSize;
					}

					for (let j = 0; j < itemSize; j++) {
						array2[index2++] = array[index++];
					}
				}

				return new BufferAttribute(array2, itemSize, normalized);
			} //


			if (this.index === null) {
				console.warn('THREE.BufferGeometry.toNonIndexed(): BufferGeometry is already non-indexed.');
				return this;
			}

			const geometry2 = new BufferGeometry();
			const indices = this.index.array;
			const attributes = this.attributes; // attributes

			for (const name in attributes) {
				const attribute = attributes[name];
				const newAttribute = convertBufferAttribute(attribute, indices);
				geometry2.setAttribute(name, newAttribute);
			} // morph attributes


			const morphAttributes = this.morphAttributes;

			for (const name in morphAttributes) {
				const morphArray = [];
				const morphAttribute = morphAttributes[name]; // morphAttribute: array of Float32BufferAttributes

				for (let i = 0, il = morphAttribute.length; i < il; i++) {
					const attribute = morphAttribute[i];
					const newAttribute = convertBufferAttribute(attribute, indices);
					morphArray.push(newAttribute);
				}

				geometry2.morphAttributes[name] = morphArray;
			}

			geometry2.morphTargetsRelative = this.morphTargetsRelative; // groups

			const groups = this.groups;

			for (let i = 0, l = groups.length; i < l; i++) {
				const group = groups[i];
				geometry2.addGroup(group.start, group.count, group.materialIndex);
			}

			return geometry2;
		}

		toJSON() {
			const data = {
				metadata: {
					version: 4.5,
					type: 'BufferGeometry',
					generator: 'BufferGeometry.toJSON'
				}
			}; // standard BufferGeometry serialization

			data.uuid = this.uuid;
			data.type = this.type;
			if (this.name !== '') data.name = this.name;
			if (Object.keys(this.userData).length > 0) data.userData = this.userData;

			if (this.parameters !== undefined) {
				const parameters = this.parameters;

				for (const key in parameters) {
					if (parameters[key] !== undefined) data[key] = parameters[key];
				}

				return data;
			} // for simplicity the code assumes attributes are not shared across geometries, see #15811


			data.data = {
				attributes: {}
			};
			const index = this.index;

			if (index !== null) {
				data.data.index = {
					type: index.array.constructor.name,
					array: Array.prototype.slice.call(index.array)
				};
			}

			const attributes = this.attributes;

			for (const key in attributes) {
				const attribute = attributes[key];
				data.data.attributes[key] = attribute.toJSON(data.data);
			}

			const morphAttributes = {};
			let hasMorphAttributes = false;

			for (const key in this.morphAttributes) {
				const attributeArray = this.morphAttributes[key];
				const array = [];

				for (let i = 0, il = attributeArray.length; i < il; i++) {
					const attribute = attributeArray[i];
					array.push(attribute.toJSON(data.data));
				}

				if (array.length > 0) {
					morphAttributes[key] = array;
					hasMorphAttributes = true;
				}
			}

			if (hasMorphAttributes) {
				data.data.morphAttributes = morphAttributes;
				data.data.morphTargetsRelative = this.morphTargetsRelative;
			}

			const groups = this.groups;

			if (groups.length > 0) {
				data.data.groups = JSON.parse(JSON.stringify(groups));
			}

			const boundingSphere = this.boundingSphere;

			if (boundingSphere !== null) {
				data.data.boundingSphere = {
					center: boundingSphere.center.toArray(),
					radius: boundingSphere.radius
				};
			}

			return data;
		}

		clone() {
			return new this.constructor().copy(this);
		}

		copy(source) {
			// reset
			this.index = null;
			this.attributes = {};
			this.morphAttributes = {};
			this.groups = [];
			this.boundingBox = null;
			this.boundingSphere = null; // used for storing cloned, shared data

			const data = {}; // name

			this.name = source.name; // index

			const index = source.index;

			if (index !== null) {
				this.setIndex(index.clone(data));
			} // attributes


			const attributes = source.attributes;

			for (const name in attributes) {
				const attribute = attributes[name];
				this.setAttribute(name, attribute.clone(data));
			} // morph attributes


			const morphAttributes = source.morphAttributes;

			for (const name in morphAttributes) {
				const array = [];
				const morphAttribute = morphAttributes[name]; // morphAttribute: array of Float32BufferAttributes

				for (let i = 0, l = morphAttribute.length; i < l; i++) {
					array.push(morphAttribute[i].clone(data));
				}

				this.morphAttributes[name] = array;
			}

			this.morphTargetsRelative = source.morphTargetsRelative; // groups

			const groups = source.groups;

			for (let i = 0, l = groups.length; i < l; i++) {
				const group = groups[i];
				this.addGroup(group.start, group.count, group.materialIndex);
			} // bounding box


			const boundingBox = source.boundingBox;

			if (boundingBox !== null) {
				this.boundingBox = boundingBox.clone();
			} // bounding sphere


			const boundingSphere = source.boundingSphere;

			if (boundingSphere !== null) {
				this.boundingSphere = boundingSphere.clone();
			} // draw range


			this.drawRange.start = source.drawRange.start;
			this.drawRange.count = source.drawRange.count; // user data

			this.userData = source.userData; // geometry generator parameters

			if (source.parameters !== undefined) this.parameters = Object.assign({}, source.parameters);
			return this;
		}

		dispose() {
			this.dispatchEvent({
				type: 'dispose'
			});
		}

	}

	BufferGeometry.prototype.isBufferGeometry = true;

	const _inverseMatrix$2 = /*@__PURE__*/new Matrix4();

	const _ray$2 = /*@__PURE__*/new Ray();

	const _sphere$3 = /*@__PURE__*/new Sphere();

	const _vA$1 = /*@__PURE__*/new Vector3();

	const _vB$1 = /*@__PURE__*/new Vector3();

	const _vC$1 = /*@__PURE__*/new Vector3();

	const _tempA = /*@__PURE__*/new Vector3();

	const _tempB = /*@__PURE__*/new Vector3();

	const _tempC = /*@__PURE__*/new Vector3();

	const _morphA = /*@__PURE__*/new Vector3();

	const _morphB = /*@__PURE__*/new Vector3();

	const _morphC = /*@__PURE__*/new Vector3();

	const _uvA$1 = /*@__PURE__*/new Vector2();

	const _uvB$1 = /*@__PURE__*/new Vector2();

	const _uvC$1 = /*@__PURE__*/new Vector2();

	const _intersectionPoint = /*@__PURE__*/new Vector3();

	const _intersectionPointWorld = /*@__PURE__*/new Vector3();

	class Mesh extends Object3D {
		constructor(geometry = new BufferGeometry(), material = new MeshBasicMaterial()) {
			super();
			this.type = 'Mesh';
			this.geometry = geometry;
			this.material = material;
			this.updateMorphTargets();
		}

		copy(source) {
			super.copy(source);

			if (source.morphTargetInfluences !== undefined) {
				this.morphTargetInfluences = source.morphTargetInfluences.slice();
			}

			if (source.morphTargetDictionary !== undefined) {
				this.morphTargetDictionary = Object.assign({}, source.morphTargetDictionary);
			}

			this.material = source.material;
			this.geometry = source.geometry;
			return this;
		}

		updateMorphTargets() {
			const geometry = this.geometry;

			if (geometry.isBufferGeometry) {
				const morphAttributes = geometry.morphAttributes;
				const keys = Object.keys(morphAttributes);

				if (keys.length > 0) {
					const morphAttribute = morphAttributes[keys[0]];

					if (morphAttribute !== undefined) {
						this.morphTargetInfluences = [];
						this.morphTargetDictionary = {};

						for (let m = 0, ml = morphAttribute.length; m < ml; m++) {
							const name = morphAttribute[m].name || String(m);
							this.morphTargetInfluences.push(0);
							this.morphTargetDictionary[name] = m;
						}
					}
				}
			} else {
				const morphTargets = geometry.morphTargets;

				if (morphTargets !== undefined && morphTargets.length > 0) {
					console.error('THREE.Mesh.updateMorphTargets() no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.');
				}
			}
		}

		raycast(raycaster, intersects) {
			const geometry = this.geometry;
			const material = this.material;
			const matrixWorld = this.matrixWorld;
			if (material === undefined) return; // Checking boundingSphere distance to ray

			if (geometry.boundingSphere === null) geometry.computeBoundingSphere();

			_sphere$3.copy(geometry.boundingSphere);

			_sphere$3.applyMatrix4(matrixWorld);

			if (raycaster.ray.intersectsSphere(_sphere$3) === false) return; //

			_inverseMatrix$2.copy(matrixWorld).invert();

			_ray$2.copy(raycaster.ray).applyMatrix4(_inverseMatrix$2); // Check boundingBox before continuing


			if (geometry.boundingBox !== null) {
				if (_ray$2.intersectsBox(geometry.boundingBox) === false) return;
			}

			let intersection;

			if (geometry.isBufferGeometry) {
				const index = geometry.index;
				const position = geometry.attributes.position;
				const morphPosition = geometry.morphAttributes.position;
				const morphTargetsRelative = geometry.morphTargetsRelative;
				const uv = geometry.attributes.uv;
				const uv2 = geometry.attributes.uv2;
				const groups = geometry.groups;
				const drawRange = geometry.drawRange;

				if (index !== null) {
					// indexed buffer geometry
					if (Array.isArray(material)) {
						for (let i = 0, il = groups.length; i < il; i++) {
							const group = groups[i];
							const groupMaterial = material[group.materialIndex];
							const start = Math.max(group.start, drawRange.start);
							const end = Math.min(index.count, Math.min(group.start + group.count, drawRange.start + drawRange.count));

							for (let j = start, jl = end; j < jl; j += 3) {
								const a = index.getX(j);
								const b = index.getX(j + 1);
								const c = index.getX(j + 2);
								intersection = checkBufferGeometryIntersection(this, groupMaterial, raycaster, _ray$2, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c);

								if (intersection) {
									intersection.faceIndex = Math.floor(j / 3); // triangle number in indexed buffer semantics

									intersection.face.materialIndex = group.materialIndex;
									intersects.push(intersection);
								}
							}
						}
					} else {
						const start = Math.max(0, drawRange.start);
						const end = Math.min(index.count, drawRange.start + drawRange.count);

						for (let i = start, il = end; i < il; i += 3) {
							const a = index.getX(i);
							const b = index.getX(i + 1);
							const c = index.getX(i + 2);
							intersection = checkBufferGeometryIntersection(this, material, raycaster, _ray$2, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c);

							if (intersection) {
								intersection.faceIndex = Math.floor(i / 3); // triangle number in indexed buffer semantics

								intersects.push(intersection);
							}
						}
					}
				} else if (position !== undefined) {
					// non-indexed buffer geometry
					if (Array.isArray(material)) {
						for (let i = 0, il = groups.length; i < il; i++) {
							const group = groups[i];
							const groupMaterial = material[group.materialIndex];
							const start = Math.max(group.start, drawRange.start);
							const end = Math.min(position.count, Math.min(group.start + group.count, drawRange.start + drawRange.count));

							for (let j = start, jl = end; j < jl; j += 3) {
								const a = j;
								const b = j + 1;
								const c = j + 2;
								intersection = checkBufferGeometryIntersection(this, groupMaterial, raycaster, _ray$2, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c);

								if (intersection) {
									intersection.faceIndex = Math.floor(j / 3); // triangle number in non-indexed buffer semantics

									intersection.face.materialIndex = group.materialIndex;
									intersects.push(intersection);
								}
							}
						}
					} else {
						const start = Math.max(0, drawRange.start);
						const end = Math.min(position.count, drawRange.start + drawRange.count);

						for (let i = start, il = end; i < il; i += 3) {
							const a = i;
							const b = i + 1;
							const c = i + 2;
							intersection = checkBufferGeometryIntersection(this, material, raycaster, _ray$2, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c);

							if (intersection) {
								intersection.faceIndex = Math.floor(i / 3); // triangle number in non-indexed buffer semantics

								intersects.push(intersection);
							}
						}
					}
				}
			} else if (geometry.isGeometry) {
				console.error('THREE.Mesh.raycast() no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.');
			}
		}

	}

	Mesh.prototype.isMesh = true;

	function checkIntersection(object, material, raycaster, ray, pA, pB, pC, point) {
		let intersect;

		if (material.side === BackSide) {
			intersect = ray.intersectTriangle(pC, pB, pA, true, point);
		} else {
			intersect = ray.intersectTriangle(pA, pB, pC, material.side !== DoubleSide, point);
		}

		if (intersect === null) return null;

		_intersectionPointWorld.copy(point);

		_intersectionPointWorld.applyMatrix4(object.matrixWorld);

		const distance = raycaster.ray.origin.distanceTo(_intersectionPointWorld);
		if (distance < raycaster.near || distance > raycaster.far) return null;
		return {
			distance: distance,
			point: _intersectionPointWorld.clone(),
			object: object
		};
	}

	function checkBufferGeometryIntersection(object, material, raycaster, ray, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c) {
		_vA$1.fromBufferAttribute(position, a);

		_vB$1.fromBufferAttribute(position, b);

		_vC$1.fromBufferAttribute(position, c);

		const morphInfluences = object.morphTargetInfluences;

		if (morphPosition && morphInfluences) {
			_morphA.set(0, 0, 0);

			_morphB.set(0, 0, 0);

			_morphC.set(0, 0, 0);

			for (let i = 0, il = morphPosition.length; i < il; i++) {
				const influence = morphInfluences[i];
				const morphAttribute = morphPosition[i];
				if (influence === 0) continue;

				_tempA.fromBufferAttribute(morphAttribute, a);

				_tempB.fromBufferAttribute(morphAttribute, b);

				_tempC.fromBufferAttribute(morphAttribute, c);

				if (morphTargetsRelative) {
					_morphA.addScaledVector(_tempA, influence);

					_morphB.addScaledVector(_tempB, influence);

					_morphC.addScaledVector(_tempC, influence);
				} else {
					_morphA.addScaledVector(_tempA.sub(_vA$1), influence);

					_morphB.addScaledVector(_tempB.sub(_vB$1), influence);

					_morphC.addScaledVector(_tempC.sub(_vC$1), influence);
				}
			}

			_vA$1.add(_morphA);

			_vB$1.add(_morphB);

			_vC$1.add(_morphC);
		}

		if (object.isSkinnedMesh) {
			object.boneTransform(a, _vA$1);
			object.boneTransform(b, _vB$1);
			object.boneTransform(c, _vC$1);
		}

		const intersection = checkIntersection(object, material, raycaster, ray, _vA$1, _vB$1, _vC$1, _intersectionPoint);

		if (intersection) {
			if (uv) {
				_uvA$1.fromBufferAttribute(uv, a);

				_uvB$1.fromBufferAttribute(uv, b);

				_uvC$1.fromBufferAttribute(uv, c);

				intersection.uv = Triangle.getUV(_intersectionPoint, _vA$1, _vB$1, _vC$1, _uvA$1, _uvB$1, _uvC$1, new Vector2());
			}

			if (uv2) {
				_uvA$1.fromBufferAttribute(uv2, a);

				_uvB$1.fromBufferAttribute(uv2, b);

				_uvC$1.fromBufferAttribute(uv2, c);

				intersection.uv2 = Triangle.getUV(_intersectionPoint, _vA$1, _vB$1, _vC$1, _uvA$1, _uvB$1, _uvC$1, new Vector2());
			}

			const face = {
				a: a,
				b: b,
				c: c,
				normal: new Vector3(),
				materialIndex: 0
			};
			Triangle.getNormal(_vA$1, _vB$1, _vC$1, face.normal);
			intersection.face = face;
		}

		return intersection;
	}

	class BoxGeometry extends BufferGeometry {
		constructor(width = 1, height = 1, depth = 1, widthSegments = 1, heightSegments = 1, depthSegments = 1) {
			super();
			this.type = 'BoxGeometry';
			this.parameters = {
				width: width,
				height: height,
				depth: depth,
				widthSegments: widthSegments,
				heightSegments: heightSegments,
				depthSegments: depthSegments
			};
			const scope = this; // segments

			widthSegments = Math.floor(widthSegments);
			heightSegments = Math.floor(heightSegments);
			depthSegments = Math.floor(depthSegments); // buffers

			const indices = [];
			const vertices = [];
			const normals = [];
			const uvs = []; // helper variables

			let numberOfVertices = 0;
			let groupStart = 0; // build each side of the box geometry

			buildPlane('z', 'y', 'x', -1, -1, depth, height, width, depthSegments, heightSegments, 0); // px

			buildPlane('z', 'y', 'x', 1, -1, depth, height, -width, depthSegments, heightSegments, 1); // nx

			buildPlane('x', 'z', 'y', 1, 1, width, depth, height, widthSegments, depthSegments, 2); // py

			buildPlane('x', 'z', 'y', 1, -1, width, depth, -height, widthSegments, depthSegments, 3); // ny

			buildPlane('x', 'y', 'z', 1, -1, width, height, depth, widthSegments, heightSegments, 4); // pz

			buildPlane('x', 'y', 'z', -1, -1, width, height, -depth, widthSegments, heightSegments, 5); // nz
			// build geometry

			this.setIndex(indices);
			this.setAttribute('position', new Float32BufferAttribute(vertices, 3));
			this.setAttribute('normal', new Float32BufferAttribute(normals, 3));
			this.setAttribute('uv', new Float32BufferAttribute(uvs, 2));

			function buildPlane(u, v, w, udir, vdir, width, height, depth, gridX, gridY, materialIndex) {
				const segmentWidth = width / gridX;
				const segmentHeight = height / gridY;
				const widthHalf = width / 2;
				const heightHalf = height / 2;
				const depthHalf = depth / 2;
				const gridX1 = gridX + 1;
				const gridY1 = gridY + 1;
				let vertexCounter = 0;
				let groupCount = 0;
				const vector = new Vector3(); // generate vertices, normals and uvs

				for (let iy = 0; iy < gridY1; iy++) {
					const y = iy * segmentHeight - heightHalf;

					for (let ix = 0; ix < gridX1; ix++) {
						const x = ix * segmentWidth - widthHalf; // set values to correct vector component

						vector[u] = x * udir;
						vector[v] = y * vdir;
						vector[w] = depthHalf; // now apply vector to vertex buffer

						vertices.push(vector.x, vector.y, vector.z); // set values to correct vector component

						vector[u] = 0;
						vector[v] = 0;
						vector[w] = depth > 0 ? 1 : -1; // now apply vector to normal buffer

						normals.push(vector.x, vector.y, vector.z); // uvs

						uvs.push(ix / gridX);
						uvs.push(1 - iy / gridY); // counters

						vertexCounter += 1;
					}
				} // indices
				// 1. you need three indices to draw a single face
				// 2. a single segment consists of two faces
				// 3. so we need to generate six (2*3) indices per segment


				for (let iy = 0; iy < gridY; iy++) {
					for (let ix = 0; ix < gridX; ix++) {
						const a = numberOfVertices + ix + gridX1 * iy;
						const b = numberOfVertices + ix + gridX1 * (iy + 1);
						const c = numberOfVertices + (ix + 1) + gridX1 * (iy + 1);
						const d = numberOfVertices + (ix + 1) + gridX1 * iy; // faces

						indices.push(a, b, d);
						indices.push(b, c, d); // increase counter

						groupCount += 6;
					}
				} // add a group to the geometry. this will ensure multi material support


				scope.addGroup(groupStart, groupCount, materialIndex); // calculate new start value for groups

				groupStart += groupCount; // update total number of vertices

				numberOfVertices += vertexCounter;
			}
		}

		static fromJSON(data) {
			return new BoxGeometry(data.width, data.height, data.depth, data.widthSegments, data.heightSegments, data.depthSegments);
		}

	}

	/**
	 * Uniform Utilities
	 */
	function cloneUniforms(src) {
		const dst = {};

		for (const u in src) {
			dst[u] = {};

			for (const p in src[u]) {
				const property = src[u][p];

				if (property && (property.isColor || property.isMatrix3 || property.isMatrix4 || property.isVector2 || property.isVector3 || property.isVector4 || property.isTexture || property.isQuaternion)) {
					dst[u][p] = property.clone();
				} else if (Array.isArray(property)) {
					dst[u][p] = property.slice();
				} else {
					dst[u][p] = property;
				}
			}
		}

		return dst;
	}
	function mergeUniforms(uniforms) {
		const merged = {};

		for (let u = 0; u < uniforms.length; u++) {
			const tmp = cloneUniforms(uniforms[u]);

			for (const p in tmp) {
				merged[p] = tmp[p];
			}
		}

		return merged;
	} // Legacy

	const UniformsUtils = {
		clone: cloneUniforms,
		merge: mergeUniforms
	};

	var default_vertex = "void main() {\n\tgl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );\n}";

	var default_fragment = "void main() {\n\tgl_FragColor = vec4( 1.0, 0.0, 0.0, 1.0 );\n}";

	/**
	 * parameters = {
	 *	defines: { "label" : "value" },
	 *	uniforms: { "parameter1": { value: 1.0 }, "parameter2": { value2: 2 } },
	 *
	 *	fragmentShader: <string>,
	 *	vertexShader: <string>,
	 *
	 *	wireframe: <boolean>,
	 *	wireframeLinewidth: <float>,
	 *
	 *	lights: <bool>
	 * }
	 */

	class ShaderMaterial extends Material {
		constructor(parameters) {
			super();
			this.type = 'ShaderMaterial';
			this.defines = {};
			this.uniforms = {};
			this.vertexShader = default_vertex;
			this.fragmentShader = default_fragment;
			this.linewidth = 1;
			this.wireframe = false;
			this.wireframeLinewidth = 1;
			this.fog = false; // set to use scene fog

			this.lights = false; // set to use scene lights

			this.clipping = false; // set to use user-defined clipping planes

			this.extensions = {
				derivatives: false,
				// set to use derivatives
				fragDepth: false,
				// set to use fragment depth values
				drawBuffers: false,
				// set to use draw buffers
				shaderTextureLOD: false // set to use shader texture LOD

			}; // When rendered geometry doesn't include these attributes but the material does,
			// use these default values in WebGL. This avoids errors when buffer data is missing.

			this.defaultAttributeValues = {
				'color': [1, 1, 1],
				'uv': [0, 0],
				'uv2': [0, 0]
			};
			this.index0AttributeName = undefined;
			this.uniformsNeedUpdate = false;
			this.glslVersion = null;

			if (parameters !== undefined) {
				if (parameters.attributes !== undefined) {
					console.error('THREE.ShaderMaterial: attributes should now be defined in THREE.BufferGeometry instead.');
				}

				this.setValues(parameters);
			}
		}

		copy(source) {
			super.copy(source);
			this.fragmentShader = source.fragmentShader;
			this.vertexShader = source.vertexShader;
			this.uniforms = cloneUniforms(source.uniforms);
			this.defines = Object.assign({}, source.defines);
			this.wireframe = source.wireframe;
			this.wireframeLinewidth = source.wireframeLinewidth;
			this.lights = source.lights;
			this.clipping = source.clipping;
			this.extensions = Object.assign({}, source.extensions);
			this.glslVersion = source.glslVersion;
			return this;
		}

		toJSON(meta) {
			const data = super.toJSON(meta);
			data.glslVersion = this.glslVersion;
			data.uniforms = {};

			for (const name in this.uniforms) {
				const uniform = this.uniforms[name];
				const value = uniform.value;

				if (value && value.isTexture) {
					data.uniforms[name] = {
						type: 't',
						value: value.toJSON(meta).uuid
					};
				} else if (value && value.isColor) {
					data.uniforms[name] = {
						type: 'c',
						value: value.getHex()
					};
				} else if (value && value.isVector2) {
					data.uniforms[name] = {
						type: 'v2',
						value: value.toArray()
					};
				} else if (value && value.isVector3) {
					data.uniforms[name] = {
						type: 'v3',
						value: value.toArray()
					};
				} else if (value && value.isVector4) {
					data.uniforms[name] = {
						type: 'v4',
						value: value.toArray()
					};
				} else if (value && value.isMatrix3) {
					data.uniforms[name] = {
						type: 'm3',
						value: value.toArray()
					};
				} else if (value && value.isMatrix4) {
					data.uniforms[name] = {
						type: 'm4',
						value: value.toArray()
					};
				} else {
					data.uniforms[name] = {
						value: value
					}; // note: the array variants v2v, v3v, v4v, m4v and tv are not supported so far
				}
			}

			if (Object.keys(this.defines).length > 0) data.defines = this.defines;
			data.vertexShader = this.vertexShader;
			data.fragmentShader = this.fragmentShader;
			const extensions = {};

			for (const key in this.extensions) {
				if (this.extensions[key] === true) extensions[key] = true;
			}

			if (Object.keys(extensions).length > 0) data.extensions = extensions;
			return data;
		}

	}

	ShaderMaterial.prototype.isShaderMaterial = true;

	class Camera extends Object3D {
		constructor() {
			super();
			this.type = 'Camera';
			this.matrixWorldInverse = new Matrix4();
			this.projectionMatrix = new Matrix4();
			this.projectionMatrixInverse = new Matrix4();
		}

		copy(source, recursive) {
			super.copy(source, recursive);
			this.matrixWorldInverse.copy(source.matrixWorldInverse);
			this.projectionMatrix.copy(source.projectionMatrix);
			this.projectionMatrixInverse.copy(source.projectionMatrixInverse);
			return this;
		}

		getWorldDirection(target) {
			this.updateWorldMatrix(true, false);
			const e = this.matrixWorld.elements;
			return target.set(-e[8], -e[9], -e[10]).normalize();
		}

		updateMatrixWorld(force) {
			super.updateMatrixWorld(force);
			this.matrixWorldInverse.copy(this.matrixWorld).invert();
		}

		updateWorldMatrix(updateParents, updateChildren) {
			super.updateWorldMatrix(updateParents, updateChildren);
			this.matrixWorldInverse.copy(this.matrixWorld).invert();
		}

		clone() {
			return new this.constructor().copy(this);
		}

	}

	Camera.prototype.isCamera = true;

	class PerspectiveCamera extends Camera {
		constructor(fov = 50, aspect = 1, near = 0.1, far = 2000) {
			super();
			this.type = 'PerspectiveCamera';
			this.fov = fov;
			this.zoom = 1;
			this.near = near;
			this.far = far;
			this.focus = 10;
			this.aspect = aspect;
			this.view = null;
			this.filmGauge = 35; // width of the film (default in millimeters)

			this.filmOffset = 0; // horizontal film offset (same unit as gauge)

			this.updateProjectionMatrix();
		}

		copy(source, recursive) {
			super.copy(source, recursive);
			this.fov = source.fov;
			this.zoom = source.zoom;
			this.near = source.near;
			this.far = source.far;
			this.focus = source.focus;
			this.aspect = source.aspect;
			this.view = source.view === null ? null : Object.assign({}, source.view);
			this.filmGauge = source.filmGauge;
			this.filmOffset = source.filmOffset;
			return this;
		}
		/**
		 * Sets the FOV by focal length in respect to the current .filmGauge.
		 *
		 * The default film gauge is 35, so that the focal length can be specified for
		 * a 35mm (full frame) camera.
		 *
		 * Values for focal length and film gauge must have the same unit.
		 */


		setFocalLength(focalLength) {
			/** see {@link http://www.bobatkins.com/photography/technical/field_of_view.html} */
			const vExtentSlope = 0.5 * this.getFilmHeight() / focalLength;
			this.fov = RAD2DEG * 2 * Math.atan(vExtentSlope);
			this.updateProjectionMatrix();
		}
		/**
		 * Calculates the focal length from the current .fov and .filmGauge.
		 */


		getFocalLength() {
			const vExtentSlope = Math.tan(DEG2RAD * 0.5 * this.fov);
			return 0.5 * this.getFilmHeight() / vExtentSlope;
		}

		getEffectiveFOV() {
			return RAD2DEG * 2 * Math.atan(Math.tan(DEG2RAD * 0.5 * this.fov) / this.zoom);
		}

		getFilmWidth() {
			// film not completely covered in portrait format (aspect < 1)
			return this.filmGauge * Math.min(this.aspect, 1);
		}

		getFilmHeight() {
			// film not completely covered in landscape format (aspect > 1)
			return this.filmGauge / Math.max(this.aspect, 1);
		}
		/**
		 * Sets an offset in a larger frustum. This is useful for multi-window or
		 * multi-monitor/multi-machine setups.
		 *
		 * For example, if you have 3x2 monitors and each monitor is 1920x1080 and
		 * the monitors are in grid like this
		 *
		 *	 +---+---+---+
		 *	 | A | B | C |
		 *	 +---+---+---+
		 *	 | D | E | F |
		 *	 +---+---+---+
		 *
		 * then for each monitor you would call it like this
		 *
		 *	 const w = 1920;
		 *	 const h = 1080;
		 *	 const fullWidth = w * 3;
		 *	 const fullHeight = h * 2;
		 *
		 *	 --A--
		 *	 camera.setViewOffset( fullWidth, fullHeight, w * 0, h * 0, w, h );
		 *	 --B--
		 *	 camera.setViewOffset( fullWidth, fullHeight, w * 1, h * 0, w, h );
		 *	 --C--
		 *	 camera.setViewOffset( fullWidth, fullHeight, w * 2, h * 0, w, h );
		 *	 --D--
		 *	 camera.setViewOffset( fullWidth, fullHeight, w * 0, h * 1, w, h );
		 *	 --E--
		 *	 camera.setViewOffset( fullWidth, fullHeight, w * 1, h * 1, w, h );
		 *	 --F--
		 *	 camera.setViewOffset( fullWidth, fullHeight, w * 2, h * 1, w, h );
		 *
		 *	 Note there is no reason monitors have to be the same size or in a grid.
		 */


		setViewOffset(fullWidth, fullHeight, x, y, width, height) {
			this.aspect = fullWidth / fullHeight;

			if (this.view === null) {
				this.view = {
					enabled: true,
					fullWidth: 1,
					fullHeight: 1,
					offsetX: 0,
					offsetY: 0,
					width: 1,
					height: 1
				};
			}

			this.view.enabled = true;
			this.view.fullWidth = fullWidth;
			this.view.fullHeight = fullHeight;
			this.view.offsetX = x;
			this.view.offsetY = y;
			this.view.width = width;
			this.view.height = height;
			this.updateProjectionMatrix();
		}

		clearViewOffset() {
			if (this.view !== null) {
				this.view.enabled = false;
			}

			this.updateProjectionMatrix();
		}

		updateProjectionMatrix() {
			const near = this.near;
			let top = near * Math.tan(DEG2RAD * 0.5 * this.fov) / this.zoom;
			let height = 2 * top;
			let width = this.aspect * height;
			let left = -0.5 * width;
			const view = this.view;

			if (this.view !== null && this.view.enabled) {
				const fullWidth = view.fullWidth,
							fullHeight = view.fullHeight;
				left += view.offsetX * width / fullWidth;
				top -= view.offsetY * height / fullHeight;
				width *= view.width / fullWidth;
				height *= view.height / fullHeight;
			}

			const skew = this.filmOffset;
			if (skew !== 0) left += near * skew / this.getFilmWidth();
			this.projectionMatrix.makePerspective(left, left + width, top, top - height, near, this.far);
			this.projectionMatrixInverse.copy(this.projectionMatrix).invert();
		}

		toJSON(meta) {
			const data = super.toJSON(meta);
			data.object.fov = this.fov;
			data.object.zoom = this.zoom;
			data.object.near = this.near;
			data.object.far = this.far;
			data.object.focus = this.focus;
			data.object.aspect = this.aspect;
			if (this.view !== null) data.object.view = Object.assign({}, this.view);
			data.object.filmGauge = this.filmGauge;
			data.object.filmOffset = this.filmOffset;
			return data;
		}

	}

	PerspectiveCamera.prototype.isPerspectiveCamera = true;

	const fov = 90,
				aspect = 1;

	class CubeCamera extends Object3D {
		constructor(near, far, renderTarget) {
			super();
			this.type = 'CubeCamera';

			if (renderTarget.isWebGLCubeRenderTarget !== true) {
				console.error('THREE.CubeCamera: The constructor now expects an instance of WebGLCubeRenderTarget as third parameter.');
				return;
			}

			this.renderTarget = renderTarget;
			const cameraPX = new PerspectiveCamera(fov, aspect, near, far);
			cameraPX.layers = this.layers;
			cameraPX.up.set(0, -1, 0);
			cameraPX.lookAt(new Vector3(1, 0, 0));
			this.add(cameraPX);
			const cameraNX = new PerspectiveCamera(fov, aspect, near, far);
			cameraNX.layers = this.layers;
			cameraNX.up.set(0, -1, 0);
			cameraNX.lookAt(new Vector3(-1, 0, 0));
			this.add(cameraNX);
			const cameraPY = new PerspectiveCamera(fov, aspect, near, far);
			cameraPY.layers = this.layers;
			cameraPY.up.set(0, 0, 1);
			cameraPY.lookAt(new Vector3(0, 1, 0));
			this.add(cameraPY);
			const cameraNY = new PerspectiveCamera(fov, aspect, near, far);
			cameraNY.layers = this.layers;
			cameraNY.up.set(0, 0, -1);
			cameraNY.lookAt(new Vector3(0, -1, 0));
			this.add(cameraNY);
			const cameraPZ = new PerspectiveCamera(fov, aspect, near, far);
			cameraPZ.layers = this.layers;
			cameraPZ.up.set(0, -1, 0);
			cameraPZ.lookAt(new Vector3(0, 0, 1));
			this.add(cameraPZ);
			const cameraNZ = new PerspectiveCamera(fov, aspect, near, far);
			cameraNZ.layers = this.layers;
			cameraNZ.up.set(0, -1, 0);
			cameraNZ.lookAt(new Vector3(0, 0, -1));
			this.add(cameraNZ);
		}

		update(renderer, scene) {
			if (this.parent === null) this.updateMatrixWorld();
			const renderTarget = this.renderTarget;
			const [cameraPX, cameraNX, cameraPY, cameraNY, cameraPZ, cameraNZ] = this.children;
			const currentXrEnabled = renderer.xr.enabled;
			const currentRenderTarget = renderer.getRenderTarget();
			renderer.xr.enabled = false;
			const generateMipmaps = renderTarget.texture.generateMipmaps;
			renderTarget.texture.generateMipmaps = false;
			renderer.setRenderTarget(renderTarget, 0);
			renderer.render(scene, cameraPX);
			renderer.setRenderTarget(renderTarget, 1);
			renderer.render(scene, cameraNX);
			renderer.setRenderTarget(renderTarget, 2);
			renderer.render(scene, cameraPY);
			renderer.setRenderTarget(renderTarget, 3);
			renderer.render(scene, cameraNY);
			renderer.setRenderTarget(renderTarget, 4);
			renderer.render(scene, cameraPZ);
			renderTarget.texture.generateMipmaps = generateMipmaps;
			renderer.setRenderTarget(renderTarget, 5);
			renderer.render(scene, cameraNZ);
			renderer.setRenderTarget(currentRenderTarget);
			renderer.xr.enabled = currentXrEnabled;
		}

	}

	class CubeTexture extends Texture {
		constructor(images, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding) {
			images = images !== undefined ? images : [];
			mapping = mapping !== undefined ? mapping : CubeReflectionMapping;
			super(images, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding);
			this.flipY = false;
		}

		get images() {
			return this.image;
		}

		set images(value) {
			this.image = value;
		}

	}

	CubeTexture.prototype.isCubeTexture = true;

	class WebGLCubeRenderTarget extends WebGLRenderTarget {
		constructor(size, options, dummy) {
			if (Number.isInteger(options)) {
				console.warn('THREE.WebGLCubeRenderTarget: constructor signature is now WebGLCubeRenderTarget( size, options )');
				options = dummy;
			}

			super(size, size, options);
			options = options || {}; // By convention -- likely based on the RenderMan spec from the 1990's -- cube maps are specified by WebGL (and three.js)
			// in a coordinate system in which positive-x is to the right when looking up the positive-z axis -- in other words,
			// in a left-handed coordinate system. By continuing this convention, preexisting cube maps continued to render correctly.
			// three.js uses a right-handed coordinate system. So environment maps used in three.js appear to have px and nx swapped
			// and the flag isRenderTargetTexture controls this conversion. The flip is not required when using WebGLCubeRenderTarget.texture
			// as a cube texture (this is detected when isRenderTargetTexture is set to true for cube textures).

			this.texture = new CubeTexture(undefined, options.mapping, options.wrapS, options.wrapT, options.magFilter, options.minFilter, options.format, options.type, options.anisotropy, options.encoding);
			this.texture.isRenderTargetTexture = true;
			this.texture.generateMipmaps = options.generateMipmaps !== undefined ? options.generateMipmaps : false;
			this.texture.minFilter = options.minFilter !== undefined ? options.minFilter : LinearFilter;
			this.texture._needsFlipEnvMap = false;
		}

		fromEquirectangularTexture(renderer, texture) {
			this.texture.type = texture.type;
			this.texture.format = RGBAFormat; // see #18859

			this.texture.encoding = texture.encoding;
			this.texture.generateMipmaps = texture.generateMipmaps;
			this.texture.minFilter = texture.minFilter;
			this.texture.magFilter = texture.magFilter;
			const shader = {
				uniforms: {
					tEquirect: {
						value: null
					}
				},
				vertexShader:
				/* glsl */
				`

				varying vec3 vWorldDirection;

				vec3 transformDirection( in vec3 dir, in mat4 matrix ) {

					return normalize( ( matrix * vec4( dir, 0.0 ) ).xyz );

				}

				void main() {

					vWorldDirection = transformDirection( position, modelMatrix );

					#include <begin_vertex>
					#include <project_vertex>

				}
			`,
				fragmentShader:
				/* glsl */
				`

				uniform sampler2D tEquirect;

				varying vec3 vWorldDirection;

				#include <common>

				void main() {

					vec3 direction = normalize( vWorldDirection );

					vec2 sampleUV = equirectUv( direction );

					gl_FragColor = texture2D( tEquirect, sampleUV );

				}
			`
			};
			const geometry = new BoxGeometry(5, 5, 5);
			const material = new ShaderMaterial({
				name: 'CubemapFromEquirect',
				uniforms: cloneUniforms(shader.uniforms),
				vertexShader: shader.vertexShader,
				fragmentShader: shader.fragmentShader,
				side: BackSide,
				blending: NoBlending
			});
			material.uniforms.tEquirect.value = texture;
			const mesh = new Mesh(geometry, material);
			const currentMinFilter = texture.minFilter; // Avoid blurred poles

			if (texture.minFilter === LinearMipmapLinearFilter) texture.minFilter = LinearFilter;
			const camera = new CubeCamera(1, 10, this);
			camera.update(renderer, mesh);
			texture.minFilter = currentMinFilter;
			mesh.geometry.dispose();
			mesh.material.dispose();
			return this;
		}

		clear(renderer, color, depth, stencil) {
			const currentRenderTarget = renderer.getRenderTarget();

			for (let i = 0; i < 6; i++) {
				renderer.setRenderTarget(this, i);
				renderer.clear(color, depth, stencil);
			}

			renderer.setRenderTarget(currentRenderTarget);
		}

	}

	WebGLCubeRenderTarget.prototype.isWebGLCubeRenderTarget = true;

	const _vector1 = /*@__PURE__*/new Vector3();

	const _vector2 = /*@__PURE__*/new Vector3();

	const _normalMatrix = /*@__PURE__*/new Matrix3();

	class Plane {
		constructor(normal = new Vector3(1, 0, 0), constant = 0) {
			// normal is assumed to be normalized
			this.normal = normal;
			this.constant = constant;
		}

		set(normal, constant) {
			this.normal.copy(normal);
			this.constant = constant;
			return this;
		}

		setComponents(x, y, z, w) {
			this.normal.set(x, y, z);
			this.constant = w;
			return this;
		}

		setFromNormalAndCoplanarPoint(normal, point) {
			this.normal.copy(normal);
			this.constant = -point.dot(this.normal);
			return this;
		}

		setFromCoplanarPoints(a, b, c) {
			const normal = _vector1.subVectors(c, b).cross(_vector2.subVectors(a, b)).normalize(); // Q: should an error be thrown if normal is zero (e.g. degenerate plane)?


			this.setFromNormalAndCoplanarPoint(normal, a);
			return this;
		}

		copy(plane) {
			this.normal.copy(plane.normal);
			this.constant = plane.constant;
			return this;
		}

		normalize() {
			// Note: will lead to a divide by zero if the plane is invalid.
			const inverseNormalLength = 1.0 / this.normal.length();
			this.normal.multiplyScalar(inverseNormalLength);
			this.constant *= inverseNormalLength;
			return this;
		}

		negate() {
			this.constant *= -1;
			this.normal.negate();
			return this;
		}

		distanceToPoint(point) {
			return this.normal.dot(point) + this.constant;
		}

		distanceToSphere(sphere) {
			return this.distanceToPoint(sphere.center) - sphere.radius;
		}

		projectPoint(point, target) {
			return target.copy(this.normal).multiplyScalar(-this.distanceToPoint(point)).add(point);
		}

		intersectLine(line, target) {
			const direction = line.delta(_vector1);
			const denominator = this.normal.dot(direction);

			if (denominator === 0) {
				// line is coplanar, return origin
				if (this.distanceToPoint(line.start) === 0) {
					return target.copy(line.start);
				} // Unsure if this is the correct method to handle this case.


				return null;
			}

			const t = -(line.start.dot(this.normal) + this.constant) / denominator;

			if (t < 0 || t > 1) {
				return null;
			}

			return target.copy(direction).multiplyScalar(t).add(line.start);
		}

		intersectsLine(line) {
			// Note: this tests if a line intersects the plane, not whether it (or its end-points) are coplanar with it.
			const startSign = this.distanceToPoint(line.start);
			const endSign = this.distanceToPoint(line.end);
			return startSign < 0 && endSign > 0 || endSign < 0 && startSign > 0;
		}

		intersectsBox(box) {
			return box.intersectsPlane(this);
		}

		intersectsSphere(sphere) {
			return sphere.intersectsPlane(this);
		}

		coplanarPoint(target) {
			return target.copy(this.normal).multiplyScalar(-this.constant);
		}

		applyMatrix4(matrix, optionalNormalMatrix) {
			const normalMatrix = optionalNormalMatrix || _normalMatrix.getNormalMatrix(matrix);

			const referencePoint = this.coplanarPoint(_vector1).applyMatrix4(matrix);
			const normal = this.normal.applyMatrix3(normalMatrix).normalize();
			this.constant = -referencePoint.dot(normal);
			return this;
		}

		translate(offset) {
			this.constant -= offset.dot(this.normal);
			return this;
		}

		equals(plane) {
			return plane.normal.equals(this.normal) && plane.constant === this.constant;
		}

		clone() {
			return new this.constructor().copy(this);
		}

	}

	Plane.prototype.isPlane = true;

	const _sphere$2 = /*@__PURE__*/new Sphere();

	const _vector$7 = /*@__PURE__*/new Vector3();

	class Frustum {
		constructor(p0 = new Plane(), p1 = new Plane(), p2 = new Plane(), p3 = new Plane(), p4 = new Plane(), p5 = new Plane()) {
			this.planes = [p0, p1, p2, p3, p4, p5];
		}

		set(p0, p1, p2, p3, p4, p5) {
			const planes = this.planes;
			planes[0].copy(p0);
			planes[1].copy(p1);
			planes[2].copy(p2);
			planes[3].copy(p3);
			planes[4].copy(p4);
			planes[5].copy(p5);
			return this;
		}

		copy(frustum) {
			const planes = this.planes;

			for (let i = 0; i < 6; i++) {
				planes[i].copy(frustum.planes[i]);
			}

			return this;
		}

		setFromProjectionMatrix(m) {
			const planes = this.planes;
			const me = m.elements;
			const me0 = me[0],
						me1 = me[1],
						me2 = me[2],
						me3 = me[3];
			const me4 = me[4],
						me5 = me[5],
						me6 = me[6],
						me7 = me[7];
			const me8 = me[8],
						me9 = me[9],
						me10 = me[10],
						me11 = me[11];
			const me12 = me[12],
						me13 = me[13],
						me14 = me[14],
						me15 = me[15];
			planes[0].setComponents(me3 - me0, me7 - me4, me11 - me8, me15 - me12).normalize();
			planes[1].setComponents(me3 + me0, me7 + me4, me11 + me8, me15 + me12).normalize();
			planes[2].setComponents(me3 + me1, me7 + me5, me11 + me9, me15 + me13).normalize();
			planes[3].setComponents(me3 - me1, me7 - me5, me11 - me9, me15 - me13).normalize();
			planes[4].setComponents(me3 - me2, me7 - me6, me11 - me10, me15 - me14).normalize();
			planes[5].setComponents(me3 + me2, me7 + me6, me11 + me10, me15 + me14).normalize();
			return this;
		}

		intersectsObject(object) {
			const geometry = object.geometry;
			if (geometry.boundingSphere === null) geometry.computeBoundingSphere();

			_sphere$2.copy(geometry.boundingSphere).applyMatrix4(object.matrixWorld);

			return this.intersectsSphere(_sphere$2);
		}

		intersectsSprite(sprite) {
			_sphere$2.center.set(0, 0, 0);

			_sphere$2.radius = 0.7071067811865476;

			_sphere$2.applyMatrix4(sprite.matrixWorld);

			return this.intersectsSphere(_sphere$2);
		}

		intersectsSphere(sphere) {
			const planes = this.planes;
			const center = sphere.center;
			const negRadius = -sphere.radius;

			for (let i = 0; i < 6; i++) {
				const distance = planes[i].distanceToPoint(center);

				if (distance < negRadius) {
					return false;
				}
			}

			return true;
		}

		intersectsBox(box) {
			const planes = this.planes;

			for (let i = 0; i < 6; i++) {
				const plane = planes[i]; // corner at max distance

				_vector$7.x = plane.normal.x > 0 ? box.max.x : box.min.x;
				_vector$7.y = plane.normal.y > 0 ? box.max.y : box.min.y;
				_vector$7.z = plane.normal.z > 0 ? box.max.z : box.min.z;

				if (plane.distanceToPoint(_vector$7) < 0) {
					return false;
				}
			}

			return true;
		}

		containsPoint(point) {
			const planes = this.planes;

			for (let i = 0; i < 6; i++) {
				if (planes[i].distanceToPoint(point) < 0) {
					return false;
				}
			}

			return true;
		}

		clone() {
			return new this.constructor().copy(this);
		}

	}

	function WebGLAnimation() {
		let context = null;
		let isAnimating = false;
		let animationLoop = null;
		let requestId = null;

		function onAnimationFrame(time, frame) {
			animationLoop(time, frame);
			requestId = context.requestAnimationFrame(onAnimationFrame);
		}

		return {
			start: function () {
				if (isAnimating === true) return;
				if (animationLoop === null) return;
				requestId = context.requestAnimationFrame(onAnimationFrame);
				isAnimating = true;
			},
			stop: function () {
				context.cancelAnimationFrame(requestId);
				isAnimating = false;
			},
			setAnimationLoop: function (callback) {
				animationLoop = callback;
			},
			setContext: function (value) {
				context = value;
			}
		};
	}

	function WebGLAttributes(gl, capabilities) {
		const isWebGL2 = capabilities.isWebGL2;
		const buffers = new WeakMap();

		function createBuffer(attribute, bufferType) {
			const array = attribute.array;
			const usage = attribute.usage;
			const buffer = gl.createBuffer();
			gl.bindBuffer(bufferType, buffer);
			gl.bufferData(bufferType, array, usage);
			attribute.onUploadCallback();
			let type = gl.FLOAT;

			if (array instanceof Float32Array) {
				type = gl.FLOAT;
			} else if (array instanceof Float64Array) {
				console.warn('THREE.WebGLAttributes: Unsupported data buffer format: Float64Array.');
			} else if (array instanceof Uint16Array) {
				if (attribute.isFloat16BufferAttribute) {
					if (isWebGL2) {
						type = gl.HALF_FLOAT;
					} else {
						console.warn('THREE.WebGLAttributes: Usage of Float16BufferAttribute requires WebGL2.');
					}
				} else {
					type = gl.UNSIGNED_SHORT;
				}
			} else if (array instanceof Int16Array) {
				type = gl.SHORT;
			} else if (array instanceof Uint32Array) {
				type = gl.UNSIGNED_INT;
			} else if (array instanceof Int32Array) {
				type = gl.INT;
			} else if (array instanceof Int8Array) {
				type = gl.BYTE;
			} else if (array instanceof Uint8Array) {
				type = gl.UNSIGNED_BYTE;
			} else if (array instanceof Uint8ClampedArray) {
				type = gl.UNSIGNED_BYTE;
			}

			return {
				buffer: buffer,
				type: type,
				bytesPerElement: array.BYTES_PER_ELEMENT,
				version: attribute.version
			};
		}

		function updateBuffer(buffer, attribute, bufferType) {
			const array = attribute.array;
			const updateRange = attribute.updateRange;
			gl.bindBuffer(bufferType, buffer);

			if (updateRange.count === -1) {
				// Not using update ranges
				gl.bufferSubData(bufferType, 0, array);
			} else {
				if (isWebGL2) {
					gl.bufferSubData(bufferType, updateRange.offset * array.BYTES_PER_ELEMENT, array, updateRange.offset, updateRange.count);
				} else {
					gl.bufferSubData(bufferType, updateRange.offset * array.BYTES_PER_ELEMENT, array.subarray(updateRange.offset, updateRange.offset + updateRange.count));
				}

				updateRange.count = -1; // reset range
			}
		} //


		function get(attribute) {
			if (attribute.isInterleavedBufferAttribute) attribute = attribute.data;
			return buffers.get(attribute);
		}

		function remove(attribute) {
			if (attribute.isInterleavedBufferAttribute) attribute = attribute.data;
			const data = buffers.get(attribute);

			if (data) {
				gl.deleteBuffer(data.buffer);
				buffers.delete(attribute);
			}
		}

		function update(attribute, bufferType) {
			if (attribute.isGLBufferAttribute) {
				const cached = buffers.get(attribute);

				if (!cached || cached.version < attribute.version) {
					buffers.set(attribute, {
						buffer: attribute.buffer,
						type: attribute.type,
						bytesPerElement: attribute.elementSize,
						version: attribute.version
					});
				}

				return;
			}

			if (attribute.isInterleavedBufferAttribute) attribute = attribute.data;
			const data = buffers.get(attribute);

			if (data === undefined) {
				buffers.set(attribute, createBuffer(attribute, bufferType));
			} else if (data.version < attribute.version) {
				updateBuffer(data.buffer, attribute, bufferType);
				data.version = attribute.version;
			}
		}

		return {
			get: get,
			remove: remove,
			update: update
		};
	}

	class PlaneGeometry extends BufferGeometry {
		constructor(width = 1, height = 1, widthSegments = 1, heightSegments = 1) {
			super();
			this.type = 'PlaneGeometry';
			this.parameters = {
				width: width,
				height: height,
				widthSegments: widthSegments,
				heightSegments: heightSegments
			};
			const width_half = width / 2;
			const height_half = height / 2;
			const gridX = Math.floor(widthSegments);
			const gridY = Math.floor(heightSegments);
			const gridX1 = gridX + 1;
			const gridY1 = gridY + 1;
			const segment_width = width / gridX;
			const segment_height = height / gridY; //

			const indices = [];
			const vertices = [];
			const normals = [];
			const uvs = [];

			for (let iy = 0; iy < gridY1; iy++) {
				const y = iy * segment_height - height_half;

				for (let ix = 0; ix < gridX1; ix++) {
					const x = ix * segment_width - width_half;
					vertices.push(x, -y, 0);
					normals.push(0, 0, 1);
					uvs.push(ix / gridX);
					uvs.push(1 - iy / gridY);
				}
			}

			for (let iy = 0; iy < gridY; iy++) {
				for (let ix = 0; ix < gridX; ix++) {
					const a = ix + gridX1 * iy;
					const b = ix + gridX1 * (iy + 1);
					const c = ix + 1 + gridX1 * (iy + 1);
					const d = ix + 1 + gridX1 * iy;
					indices.push(a, b, d);
					indices.push(b, c, d);
				}
			}

			this.setIndex(indices);
			this.setAttribute('position', new Float32BufferAttribute(vertices, 3));
			this.setAttribute('normal', new Float32BufferAttribute(normals, 3));
			this.setAttribute('uv', new Float32BufferAttribute(uvs, 2));
		}

		static fromJSON(data) {
			return new PlaneGeometry(data.width, data.height, data.widthSegments, data.heightSegments);
		}

	}

	var alphamap_fragment = "#ifdef USE_ALPHAMAP\n\tdiffuseColor.a *= texture2D( alphaMap, vUv ).g;\n#endif";

	var alphamap_pars_fragment = "#ifdef USE_ALPHAMAP\n\tuniform sampler2D alphaMap;\n#endif";

	var alphatest_fragment = "#ifdef USE_ALPHATEST\n\tif ( diffuseColor.a < alphaTest ) discard;\n#endif";

	var alphatest_pars_fragment = "#ifdef USE_ALPHATEST\n\tuniform float alphaTest;\n#endif";

	var aomap_fragment = "#ifdef USE_AOMAP\n\tfloat ambientOcclusion = ( texture2D( aoMap, vUv2 ).r - 1.0 ) * aoMapIntensity + 1.0;\n\treflectedLight.indirectDiffuse *= ambientOcclusion;\n\t#if defined( USE_ENVMAP ) && defined( STANDARD )\n\t\tfloat dotNV = saturate( dot( geometry.normal, geometry.viewDir ) );\n\t\treflectedLight.indirectSpecular *= computeSpecularOcclusion( dotNV, ambientOcclusion, material.roughness );\n\t#endif\n#endif";

	var aomap_pars_fragment = "#ifdef USE_AOMAP\n\tuniform sampler2D aoMap;\n\tuniform float aoMapIntensity;\n#endif";

	var begin_vertex = "vec3 transformed = vec3( position );";

	var beginnormal_vertex = "vec3 objectNormal = vec3( normal );\n#ifdef USE_TANGENT\n\tvec3 objectTangent = vec3( tangent.xyz );\n#endif";

	var bsdfs = "vec3 BRDF_Lambert( const in vec3 diffuseColor ) {\n\treturn RECIPROCAL_PI * diffuseColor;\n}\nvec3 F_Schlick( const in vec3 f0, const in float f90, const in float dotVH ) {\n\tfloat fresnel = exp2( ( - 5.55473 * dotVH - 6.98316 ) * dotVH );\n\treturn f0 * ( 1.0 - fresnel ) + ( f90 * fresnel );\n}\nfloat V_GGX_SmithCorrelated( const in float alpha, const in float dotNL, const in float dotNV ) {\n\tfloat a2 = pow2( alpha );\n\tfloat gv = dotNL * sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNV ) );\n\tfloat gl = dotNV * sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNL ) );\n\treturn 0.5 / max( gv + gl, EPSILON );\n}\nfloat D_GGX( const in float alpha, const in float dotNH ) {\n\tfloat a2 = pow2( alpha );\n\tfloat denom = pow2( dotNH ) * ( a2 - 1.0 ) + 1.0;\n\treturn RECIPROCAL_PI * a2 / pow2( denom );\n}\nvec3 BRDF_GGX( const in vec3 lightDir, const in vec3 viewDir, const in vec3 normal, const in vec3 f0, const in float f90, const in float roughness ) {\n\tfloat alpha = pow2( roughness );\n\tvec3 halfDir = normalize( lightDir + viewDir );\n\tfloat dotNL = saturate( dot( normal, lightDir ) );\n\tfloat dotNV = saturate( dot( normal, viewDir ) );\n\tfloat dotNH = saturate( dot( normal, halfDir ) );\n\tfloat dotVH = saturate( dot( viewDir, halfDir ) );\n\tvec3 F = F_Schlick( f0, f90, dotVH );\n\tfloat V = V_GGX_SmithCorrelated( alpha, dotNL, dotNV );\n\tfloat D = D_GGX( alpha, dotNH );\n\treturn F * ( V * D );\n}\nvec2 LTC_Uv( const in vec3 N, const in vec3 V, const in float roughness ) {\n\tconst float LUT_SIZE = 64.0;\n\tconst float LUT_SCALE = ( LUT_SIZE - 1.0 ) / LUT_SIZE;\n\tconst float LUT_BIAS = 0.5 / LUT_SIZE;\n\tfloat dotNV = saturate( dot( N, V ) );\n\tvec2 uv = vec2( roughness, sqrt( 1.0 - dotNV ) );\n\tuv = uv * LUT_SCALE + LUT_BIAS;\n\treturn uv;\n}\nfloat LTC_ClippedSphereFormFactor( const in vec3 f ) {\n\tfloat l = length( f );\n\treturn max( ( l * l + f.z ) / ( l + 1.0 ), 0.0 );\n}\nvec3 LTC_EdgeVectorFormFactor( const in vec3 v1, const in vec3 v2 ) {\n\tfloat x = dot( v1, v2 );\n\tfloat y = abs( x );\n\tfloat a = 0.8543985 + ( 0.4965155 + 0.0145206 * y ) * y;\n\tfloat b = 3.4175940 + ( 4.1616724 + y ) * y;\n\tfloat v = a / b;\n\tfloat theta_sintheta = ( x > 0.0 ) ? v : 0.5 * inversesqrt( max( 1.0 - x * x, 1e-7 ) ) - v;\n\treturn cross( v1, v2 ) * theta_sintheta;\n}\nvec3 LTC_Evaluate( const in vec3 N, const in vec3 V, const in vec3 P, const in mat3 mInv, const in vec3 rectCoords[ 4 ] ) {\n\tvec3 v1 = rectCoords[ 1 ] - rectCoords[ 0 ];\n\tvec3 v2 = rectCoords[ 3 ] - rectCoords[ 0 ];\n\tvec3 lightNormal = cross( v1, v2 );\n\tif( dot( lightNormal, P - rectCoords[ 0 ] ) < 0.0 ) return vec3( 0.0 );\n\tvec3 T1, T2;\n\tT1 = normalize( V - N * dot( V, N ) );\n\tT2 = - cross( N, T1 );\n\tmat3 mat = mInv * transposeMat3( mat3( T1, T2, N ) );\n\tvec3 coords[ 4 ];\n\tcoords[ 0 ] = mat * ( rectCoords[ 0 ] - P );\n\tcoords[ 1 ] = mat * ( rectCoords[ 1 ] - P );\n\tcoords[ 2 ] = mat * ( rectCoords[ 2 ] - P );\n\tcoords[ 3 ] = mat * ( rectCoords[ 3 ] - P );\n\tcoords[ 0 ] = normalize( coords[ 0 ] );\n\tcoords[ 1 ] = normalize( coords[ 1 ] );\n\tcoords[ 2 ] = normalize( coords[ 2 ] );\n\tcoords[ 3 ] = normalize( coords[ 3 ] );\n\tvec3 vectorFormFactor = vec3( 0.0 );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 0 ], coords[ 1 ] );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 1 ], coords[ 2 ] );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 2 ], coords[ 3 ] );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 3 ], coords[ 0 ] );\n\tfloat result = LTC_ClippedSphereFormFactor( vectorFormFactor );\n\treturn vec3( result );\n}\nfloat G_BlinnPhong_Implicit( ) {\n\treturn 0.25;\n}\nfloat D_BlinnPhong( const in float shininess, const in float dotNH ) {\n\treturn RECIPROCAL_PI * ( shininess * 0.5 + 1.0 ) * pow( dotNH, shininess );\n}\nvec3 BRDF_BlinnPhong( const in vec3 lightDir, const in vec3 viewDir, const in vec3 normal, const in vec3 specularColor, const in float shininess ) {\n\tvec3 halfDir = normalize( lightDir + viewDir );\n\tfloat dotNH = saturate( dot( normal, halfDir ) );\n\tfloat dotVH = saturate( dot( viewDir, halfDir ) );\n\tvec3 F = F_Schlick( specularColor, 1.0, dotVH );\n\tfloat G = G_BlinnPhong_Implicit( );\n\tfloat D = D_BlinnPhong( shininess, dotNH );\n\treturn F * ( G * D );\n}\n#if defined( USE_SHEEN )\nfloat D_Charlie( float roughness, float dotNH ) {\n\tfloat alpha = pow2( roughness );\n\tfloat invAlpha = 1.0 / alpha;\n\tfloat cos2h = dotNH * dotNH;\n\tfloat sin2h = max( 1.0 - cos2h, 0.0078125 );\n\treturn ( 2.0 + invAlpha ) * pow( sin2h, invAlpha * 0.5 ) / ( 2.0 * PI );\n}\nfloat V_Neubelt( float dotNV, float dotNL ) {\n\treturn saturate( 1.0 / ( 4.0 * ( dotNL + dotNV - dotNL * dotNV ) ) );\n}\nvec3 BRDF_Sheen( const in vec3 lightDir, const in vec3 viewDir, const in vec3 normal, vec3 sheenTint, const in float sheenRoughness ) {\n\tvec3 halfDir = normalize( lightDir + viewDir );\n\tfloat dotNL = saturate( dot( normal, lightDir ) );\n\tfloat dotNV = saturate( dot( normal, viewDir ) );\n\tfloat dotNH = saturate( dot( normal, halfDir ) );\n\tfloat D = D_Charlie( sheenRoughness, dotNH );\n\tfloat V = V_Neubelt( dotNV, dotNL );\n\treturn sheenTint * ( D * V );\n}\n#endif";

	var bumpmap_pars_fragment = "#ifdef USE_BUMPMAP\n\tuniform sampler2D bumpMap;\n\tuniform float bumpScale;\n\tvec2 dHdxy_fwd() {\n\t\tvec2 dSTdx = dFdx( vUv );\n\t\tvec2 dSTdy = dFdy( vUv );\n\t\tfloat Hll = bumpScale * texture2D( bumpMap, vUv ).x;\n\t\tfloat dBx = bumpScale * texture2D( bumpMap, vUv + dSTdx ).x - Hll;\n\t\tfloat dBy = bumpScale * texture2D( bumpMap, vUv + dSTdy ).x - Hll;\n\t\treturn vec2( dBx, dBy );\n\t}\n\tvec3 perturbNormalArb( vec3 surf_pos, vec3 surf_norm, vec2 dHdxy, float faceDirection ) {\n\t\tvec3 vSigmaX = vec3( dFdx( surf_pos.x ), dFdx( surf_pos.y ), dFdx( surf_pos.z ) );\n\t\tvec3 vSigmaY = vec3( dFdy( surf_pos.x ), dFdy( surf_pos.y ), dFdy( surf_pos.z ) );\n\t\tvec3 vN = surf_norm;\n\t\tvec3 R1 = cross( vSigmaY, vN );\n\t\tvec3 R2 = cross( vN, vSigmaX );\n\t\tfloat fDet = dot( vSigmaX, R1 ) * faceDirection;\n\t\tvec3 vGrad = sign( fDet ) * ( dHdxy.x * R1 + dHdxy.y * R2 );\n\t\treturn normalize( abs( fDet ) * surf_norm - vGrad );\n\t}\n#endif";

	var clipping_planes_fragment = "#if NUM_CLIPPING_PLANES > 0\n\tvec4 plane;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < UNION_CLIPPING_PLANES; i ++ ) {\n\t\tplane = clippingPlanes[ i ];\n\t\tif ( dot( vClipPosition, plane.xyz ) > plane.w ) discard;\n\t}\n\t#pragma unroll_loop_end\n\t#if UNION_CLIPPING_PLANES < NUM_CLIPPING_PLANES\n\t\tbool clipped = true;\n\t\t#pragma unroll_loop_start\n\t\tfor ( int i = UNION_CLIPPING_PLANES; i < NUM_CLIPPING_PLANES; i ++ ) {\n\t\t\tplane = clippingPlanes[ i ];\n\t\t\tclipped = ( dot( vClipPosition, plane.xyz ) > plane.w ) && clipped;\n\t\t}\n\t\t#pragma unroll_loop_end\n\t\tif ( clipped ) discard;\n\t#endif\n#endif";

	var clipping_planes_pars_fragment = "#if NUM_CLIPPING_PLANES > 0\n\tvarying vec3 vClipPosition;\n\tuniform vec4 clippingPlanes[ NUM_CLIPPING_PLANES ];\n#endif";

	var clipping_planes_pars_vertex = "#if NUM_CLIPPING_PLANES > 0\n\tvarying vec3 vClipPosition;\n#endif";

	var clipping_planes_vertex = "#if NUM_CLIPPING_PLANES > 0\n\tvClipPosition = - mvPosition.xyz;\n#endif";

	var color_fragment = "#if defined( USE_COLOR_ALPHA )\n\tdiffuseColor *= vColor;\n#elif defined( USE_COLOR )\n\tdiffuseColor.rgb *= vColor;\n#endif";

	var color_pars_fragment = "#if defined( USE_COLOR_ALPHA )\n\tvarying vec4 vColor;\n#elif defined( USE_COLOR )\n\tvarying vec3 vColor;\n#endif";

	var color_pars_vertex = "#if defined( USE_COLOR_ALPHA )\n\tvarying vec4 vColor;\n#elif defined( USE_COLOR ) || defined( USE_INSTANCING_COLOR )\n\tvarying vec3 vColor;\n#endif";

	var color_vertex = "#if defined( USE_COLOR_ALPHA )\n\tvColor = vec4( 1.0 );\n#elif defined( USE_COLOR ) || defined( USE_INSTANCING_COLOR )\n\tvColor = vec3( 1.0 );\n#endif\n#ifdef USE_COLOR\n\tvColor *= color;\n#endif\n#ifdef USE_INSTANCING_COLOR\n\tvColor.xyz *= instanceColor.xyz;\n#endif";

	var common = "#define PI 3.141592653589793\n#define PI2 6.283185307179586\n#define PI_HALF 1.5707963267948966\n#define RECIPROCAL_PI 0.3183098861837907\n#define RECIPROCAL_PI2 0.15915494309189535\n#define EPSILON 1e-6\n#ifndef saturate\n#define saturate( a ) clamp( a, 0.0, 1.0 )\n#endif\n#define whiteComplement( a ) ( 1.0 - saturate( a ) )\nfloat pow2( const in float x ) { return x*x; }\nfloat pow3( const in float x ) { return x*x*x; }\nfloat pow4( const in float x ) { float x2 = x*x; return x2*x2; }\nfloat max3( const in vec3 v ) { return max( max( v.x, v.y ), v.z ); }\nfloat average( const in vec3 color ) { return dot( color, vec3( 0.3333 ) ); }\nhighp float rand( const in vec2 uv ) {\n\tconst highp float a = 12.9898, b = 78.233, c = 43758.5453;\n\thighp float dt = dot( uv.xy, vec2( a,b ) ), sn = mod( dt, PI );\n\treturn fract( sin( sn ) * c );\n}\n#ifdef HIGH_PRECISION\n\tfloat precisionSafeLength( vec3 v ) { return length( v ); }\n#else\n\tfloat precisionSafeLength( vec3 v ) {\n\t\tfloat maxComponent = max3( abs( v ) );\n\t\treturn length( v / maxComponent ) * maxComponent;\n\t}\n#endif\nstruct IncidentLight {\n\tvec3 color;\n\tvec3 direction;\n\tbool visible;\n};\nstruct ReflectedLight {\n\tvec3 directDiffuse;\n\tvec3 directSpecular;\n\tvec3 indirectDiffuse;\n\tvec3 indirectSpecular;\n};\nstruct GeometricContext {\n\tvec3 position;\n\tvec3 normal;\n\tvec3 viewDir;\n#ifdef USE_CLEARCOAT\n\tvec3 clearcoatNormal;\n#endif\n};\nvec3 transformDirection( in vec3 dir, in mat4 matrix ) {\n\treturn normalize( ( matrix * vec4( dir, 0.0 ) ).xyz );\n}\nvec3 inverseTransformDirection( in vec3 dir, in mat4 matrix ) {\n\treturn normalize( ( vec4( dir, 0.0 ) * matrix ).xyz );\n}\nmat3 transposeMat3( const in mat3 m ) {\n\tmat3 tmp;\n\ttmp[ 0 ] = vec3( m[ 0 ].x, m[ 1 ].x, m[ 2 ].x );\n\ttmp[ 1 ] = vec3( m[ 0 ].y, m[ 1 ].y, m[ 2 ].y );\n\ttmp[ 2 ] = vec3( m[ 0 ].z, m[ 1 ].z, m[ 2 ].z );\n\treturn tmp;\n}\nfloat linearToRelativeLuminance( const in vec3 color ) {\n\tvec3 weights = vec3( 0.2126, 0.7152, 0.0722 );\n\treturn dot( weights, color.rgb );\n}\nbool isPerspectiveMatrix( mat4 m ) {\n\treturn m[ 2 ][ 3 ] == - 1.0;\n}\nvec2 equirectUv( in vec3 dir ) {\n\tfloat u = atan( dir.z, dir.x ) * RECIPROCAL_PI2 + 0.5;\n\tfloat v = asin( clamp( dir.y, - 1.0, 1.0 ) ) * RECIPROCAL_PI + 0.5;\n\treturn vec2( u, v );\n}";

	var cube_uv_reflection_fragment = "#ifdef ENVMAP_TYPE_CUBE_UV\n\t#define cubeUV_maxMipLevel 8.0\n\t#define cubeUV_minMipLevel 4.0\n\t#define cubeUV_maxTileSize 256.0\n\t#define cubeUV_minTileSize 16.0\n\tfloat getFace( vec3 direction ) {\n\t\tvec3 absDirection = abs( direction );\n\t\tfloat face = - 1.0;\n\t\tif ( absDirection.x > absDirection.z ) {\n\t\t\tif ( absDirection.x > absDirection.y )\n\t\t\t\tface = direction.x > 0.0 ? 0.0 : 3.0;\n\t\t\telse\n\t\t\t\tface = direction.y > 0.0 ? 1.0 : 4.0;\n\t\t} else {\n\t\t\tif ( absDirection.z > absDirection.y )\n\t\t\t\tface = direction.z > 0.0 ? 2.0 : 5.0;\n\t\t\telse\n\t\t\t\tface = direction.y > 0.0 ? 1.0 : 4.0;\n\t\t}\n\t\treturn face;\n\t}\n\tvec2 getUV( vec3 direction, float face ) {\n\t\tvec2 uv;\n\t\tif ( face == 0.0 ) {\n\t\t\tuv = vec2( direction.z, direction.y ) / abs( direction.x );\n\t\t} else if ( face == 1.0 ) {\n\t\t\tuv = vec2( - direction.x, - direction.z ) / abs( direction.y );\n\t\t} else if ( face == 2.0 ) {\n\t\t\tuv = vec2( - direction.x, direction.y ) / abs( direction.z );\n\t\t} else if ( face == 3.0 ) {\n\t\t\tuv = vec2( - direction.z, direction.y ) / abs( direction.x );\n\t\t} else if ( face == 4.0 ) {\n\t\t\tuv = vec2( - direction.x, direction.z ) / abs( direction.y );\n\t\t} else {\n\t\t\tuv = vec2( direction.x, direction.y ) / abs( direction.z );\n\t\t}\n\t\treturn 0.5 * ( uv + 1.0 );\n\t}\n\tvec3 bilinearCubeUV( sampler2D envMap, vec3 direction, float mipInt ) {\n\t\tfloat face = getFace( direction );\n\t\tfloat filterInt = max( cubeUV_minMipLevel - mipInt, 0.0 );\n\t\tmipInt = max( mipInt, cubeUV_minMipLevel );\n\t\tfloat faceSize = exp2( mipInt );\n\t\tfloat texelSize = 1.0 / ( 3.0 * cubeUV_maxTileSize );\n\t\tvec2 uv = getUV( direction, face ) * ( faceSize - 1.0 );\n\t\tvec2 f = fract( uv );\n\t\tuv += 0.5 - f;\n\t\tif ( face > 2.0 ) {\n\t\t\tuv.y += faceSize;\n\t\t\tface -= 3.0;\n\t\t}\n\t\tuv.x += face * faceSize;\n\t\tif ( mipInt < cubeUV_maxMipLevel ) {\n\t\t\tuv.y += 2.0 * cubeUV_maxTileSize;\n\t\t}\n\t\tuv.y += filterInt * 2.0 * cubeUV_minTileSize;\n\t\tuv.x += 3.0 * max( 0.0, cubeUV_maxTileSize - 2.0 * faceSize );\n\t\tuv *= texelSize;\n\t\tvec3 tl = envMapTexelToLinear( texture2D( envMap, uv ) ).rgb;\n\t\tuv.x += texelSize;\n\t\tvec3 tr = envMapTexelToLinear( texture2D( envMap, uv ) ).rgb;\n\t\tuv.y += texelSize;\n\t\tvec3 br = envMapTexelToLinear( texture2D( envMap, uv ) ).rgb;\n\t\tuv.x -= texelSize;\n\t\tvec3 bl = envMapTexelToLinear( texture2D( envMap, uv ) ).rgb;\n\t\tvec3 tm = mix( tl, tr, f.x );\n\t\tvec3 bm = mix( bl, br, f.x );\n\t\treturn mix( tm, bm, f.y );\n\t}\n\t#define r0 1.0\n\t#define v0 0.339\n\t#define m0 - 2.0\n\t#define r1 0.8\n\t#define v1 0.276\n\t#define m1 - 1.0\n\t#define r4 0.4\n\t#define v4 0.046\n\t#define m4 2.0\n\t#define r5 0.305\n\t#define v5 0.016\n\t#define m5 3.0\n\t#define r6 0.21\n\t#define v6 0.0038\n\t#define m6 4.0\n\tfloat roughnessToMip( float roughness ) {\n\t\tfloat mip = 0.0;\n\t\tif ( roughness >= r1 ) {\n\t\t\tmip = ( r0 - roughness ) * ( m1 - m0 ) / ( r0 - r1 ) + m0;\n\t\t} else if ( roughness >= r4 ) {\n\t\t\tmip = ( r1 - roughness ) * ( m4 - m1 ) / ( r1 - r4 ) + m1;\n\t\t} else if ( roughness >= r5 ) {\n\t\t\tmip = ( r4 - roughness ) * ( m5 - m4 ) / ( r4 - r5 ) + m4;\n\t\t} else if ( roughness >= r6 ) {\n\t\t\tmip = ( r5 - roughness ) * ( m6 - m5 ) / ( r5 - r6 ) + m5;\n\t\t} else {\n\t\t\tmip = - 2.0 * log2( 1.16 * roughness );\t\t}\n\t\treturn mip;\n\t}\n\tvec4 textureCubeUV( sampler2D envMap, vec3 sampleDir, float roughness ) {\n\t\tfloat mip = clamp( roughnessToMip( roughness ), m0, cubeUV_maxMipLevel );\n\t\tfloat mipF = fract( mip );\n\t\tfloat mipInt = floor( mip );\n\t\tvec3 color0 = bilinearCubeUV( envMap, sampleDir, mipInt );\n\t\tif ( mipF == 0.0 ) {\n\t\t\treturn vec4( color0, 1.0 );\n\t\t} else {\n\t\t\tvec3 color1 = bilinearCubeUV( envMap, sampleDir, mipInt + 1.0 );\n\t\t\treturn vec4( mix( color0, color1, mipF ), 1.0 );\n\t\t}\n\t}\n#endif";

	var defaultnormal_vertex = "vec3 transformedNormal = objectNormal;\n#ifdef USE_INSTANCING\n\tmat3 m = mat3( instanceMatrix );\n\ttransformedNormal /= vec3( dot( m[ 0 ], m[ 0 ] ), dot( m[ 1 ], m[ 1 ] ), dot( m[ 2 ], m[ 2 ] ) );\n\ttransformedNormal = m * transformedNormal;\n#endif\ntransformedNormal = normalMatrix * transformedNormal;\n#ifdef FLIP_SIDED\n\ttransformedNormal = - transformedNormal;\n#endif\n#ifdef USE_TANGENT\n\tvec3 transformedTangent = ( modelViewMatrix * vec4( objectTangent, 0.0 ) ).xyz;\n\t#ifdef FLIP_SIDED\n\t\ttransformedTangent = - transformedTangent;\n\t#endif\n#endif";

	var displacementmap_pars_vertex = "#ifdef USE_DISPLACEMENTMAP\n\tuniform sampler2D displacementMap;\n\tuniform float displacementScale;\n\tuniform float displacementBias;\n#endif";

	var displacementmap_vertex = "#ifdef USE_DISPLACEMENTMAP\n\ttransformed += normalize( objectNormal ) * ( texture2D( displacementMap, vUv ).x * displacementScale + displacementBias );\n#endif";

	var emissivemap_fragment = "#ifdef USE_EMISSIVEMAP\n\tvec4 emissiveColor = texture2D( emissiveMap, vUv );\n\temissiveColor.rgb = emissiveMapTexelToLinear( emissiveColor ).rgb;\n\ttotalEmissiveRadiance *= emissiveColor.rgb;\n#endif";

	var emissivemap_pars_fragment = "#ifdef USE_EMISSIVEMAP\n\tuniform sampler2D emissiveMap;\n#endif";

	var encodings_fragment = "gl_FragColor = linearToOutputTexel( gl_FragColor );";

	var encodings_pars_fragment = "\nvec4 LinearToLinear( in vec4 value ) {\n\treturn value;\n}\nvec4 GammaToLinear( in vec4 value, in float gammaFactor ) {\n\treturn vec4( pow( value.rgb, vec3( gammaFactor ) ), value.a );\n}\nvec4 LinearToGamma( in vec4 value, in float gammaFactor ) {\n\treturn vec4( pow( value.rgb, vec3( 1.0 / gammaFactor ) ), value.a );\n}\nvec4 sRGBToLinear( in vec4 value ) {\n\treturn vec4( mix( pow( value.rgb * 0.9478672986 + vec3( 0.0521327014 ), vec3( 2.4 ) ), value.rgb * 0.0773993808, vec3( lessThanEqual( value.rgb, vec3( 0.04045 ) ) ) ), value.a );\n}\nvec4 LinearTosRGB( in vec4 value ) {\n\treturn vec4( mix( pow( value.rgb, vec3( 0.41666 ) ) * 1.055 - vec3( 0.055 ), value.rgb * 12.92, vec3( lessThanEqual( value.rgb, vec3( 0.0031308 ) ) ) ), value.a );\n}\nvec4 RGBEToLinear( in vec4 value ) {\n\treturn vec4( value.rgb * exp2( value.a * 255.0 - 128.0 ), 1.0 );\n}\nvec4 LinearToRGBE( in vec4 value ) {\n\tfloat maxComponent = max( max( value.r, value.g ), value.b );\n\tfloat fExp = clamp( ceil( log2( maxComponent ) ), -128.0, 127.0 );\n\treturn vec4( value.rgb / exp2( fExp ), ( fExp + 128.0 ) / 255.0 );\n}\nvec4 RGBMToLinear( in vec4 value, in float maxRange ) {\n\treturn vec4( value.rgb * value.a * maxRange, 1.0 );\n}\nvec4 LinearToRGBM( in vec4 value, in float maxRange ) {\n\tfloat maxRGB = max( value.r, max( value.g, value.b ) );\n\tfloat M = clamp( maxRGB / maxRange, 0.0, 1.0 );\n\tM = ceil( M * 255.0 ) / 255.0;\n\treturn vec4( value.rgb / ( M * maxRange ), M );\n}\nvec4 RGBDToLinear( in vec4 value, in float maxRange ) {\n\treturn vec4( value.rgb * ( ( maxRange / 255.0 ) / value.a ), 1.0 );\n}\nvec4 LinearToRGBD( in vec4 value, in float maxRange ) {\n\tfloat maxRGB = max( value.r, max( value.g, value.b ) );\n\tfloat D = max( maxRange / maxRGB, 1.0 );\n\tD = clamp( floor( D ) / 255.0, 0.0, 1.0 );\n\treturn vec4( value.rgb * ( D * ( 255.0 / maxRange ) ), D );\n}\nconst mat3 cLogLuvM = mat3( 0.2209, 0.3390, 0.4184, 0.1138, 0.6780, 0.7319, 0.0102, 0.1130, 0.2969 );\nvec4 LinearToLogLuv( in vec4 value ) {\n\tvec3 Xp_Y_XYZp = cLogLuvM * value.rgb;\n\tXp_Y_XYZp = max( Xp_Y_XYZp, vec3( 1e-6, 1e-6, 1e-6 ) );\n\tvec4 vResult;\n\tvResult.xy = Xp_Y_XYZp.xy / Xp_Y_XYZp.z;\n\tfloat Le = 2.0 * log2(Xp_Y_XYZp.y) + 127.0;\n\tvResult.w = fract( Le );\n\tvResult.z = ( Le - ( floor( vResult.w * 255.0 ) ) / 255.0 ) / 255.0;\n\treturn vResult;\n}\nconst mat3 cLogLuvInverseM = mat3( 6.0014, -2.7008, -1.7996, -1.3320, 3.1029, -5.7721, 0.3008, -1.0882, 5.6268 );\nvec4 LogLuvToLinear( in vec4 value ) {\n\tfloat Le = value.z * 255.0 + value.w;\n\tvec3 Xp_Y_XYZp;\n\tXp_Y_XYZp.y = exp2( ( Le - 127.0 ) / 2.0 );\n\tXp_Y_XYZp.z = Xp_Y_XYZp.y / value.y;\n\tXp_Y_XYZp.x = value.x * Xp_Y_XYZp.z;\n\tvec3 vRGB = cLogLuvInverseM * Xp_Y_XYZp.rgb;\n\treturn vec4( max( vRGB, 0.0 ), 1.0 );\n}";

	var envmap_fragment = "#ifdef USE_ENVMAP\n\t#ifdef ENV_WORLDPOS\n\t\tvec3 cameraToFrag;\n\t\tif ( isOrthographic ) {\n\t\t\tcameraToFrag = normalize( vec3( - viewMatrix[ 0 ][ 2 ], - viewMatrix[ 1 ][ 2 ], - viewMatrix[ 2 ][ 2 ] ) );\n\t\t} else {\n\t\t\tcameraToFrag = normalize( vWorldPosition - cameraPosition );\n\t\t}\n\t\tvec3 worldNormal = inverseTransformDirection( normal, viewMatrix );\n\t\t#ifdef ENVMAP_MODE_REFLECTION\n\t\t\tvec3 reflectVec = reflect( cameraToFrag, worldNormal );\n\t\t#else\n\t\t\tvec3 reflectVec = refract( cameraToFrag, worldNormal, refractionRatio );\n\t\t#endif\n\t#else\n\t\tvec3 reflectVec = vReflect;\n\t#endif\n\t#ifdef ENVMAP_TYPE_CUBE\n\t\tvec4 envColor = textureCube( envMap, vec3( flipEnvMap * reflectVec.x, reflectVec.yz ) );\n\t\tenvColor = envMapTexelToLinear( envColor );\n\t#elif defined( ENVMAP_TYPE_CUBE_UV )\n\t\tvec4 envColor = textureCubeUV( envMap, reflectVec, 0.0 );\n\t#else\n\t\tvec4 envColor = vec4( 0.0 );\n\t#endif\n\t#ifdef ENVMAP_BLENDING_MULTIPLY\n\t\toutgoingLight = mix( outgoingLight, outgoingLight * envColor.xyz, specularStrength * reflectivity );\n\t#elif defined( ENVMAP_BLENDING_MIX )\n\t\toutgoingLight = mix( outgoingLight, envColor.xyz, specularStrength * reflectivity );\n\t#elif defined( ENVMAP_BLENDING_ADD )\n\t\toutgoingLight += envColor.xyz * specularStrength * reflectivity;\n\t#endif\n#endif";

	var envmap_common_pars_fragment = "#ifdef USE_ENVMAP\n\tuniform float envMapIntensity;\n\tuniform float flipEnvMap;\n\tuniform int maxMipLevel;\n\t#ifdef ENVMAP_TYPE_CUBE\n\t\tuniform samplerCube envMap;\n\t#else\n\t\tuniform sampler2D envMap;\n\t#endif\n\t\n#endif";

	var envmap_pars_fragment = "#ifdef USE_ENVMAP\n\tuniform float reflectivity;\n\t#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( PHONG )\n\t\t#define ENV_WORLDPOS\n\t#endif\n\t#ifdef ENV_WORLDPOS\n\t\tvarying vec3 vWorldPosition;\n\t\tuniform float refractionRatio;\n\t#else\n\t\tvarying vec3 vReflect;\n\t#endif\n#endif";

	var envmap_pars_vertex = "#ifdef USE_ENVMAP\n\t#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) ||defined( PHONG )\n\t\t#define ENV_WORLDPOS\n\t#endif\n\t#ifdef ENV_WORLDPOS\n\t\t\n\t\tvarying vec3 vWorldPosition;\n\t#else\n\t\tvarying vec3 vReflect;\n\t\tuniform float refractionRatio;\n\t#endif\n#endif";

	var envmap_vertex = "#ifdef USE_ENVMAP\n\t#ifdef ENV_WORLDPOS\n\t\tvWorldPosition = worldPosition.xyz;\n\t#else\n\t\tvec3 cameraToVertex;\n\t\tif ( isOrthographic ) {\n\t\t\tcameraToVertex = normalize( vec3( - viewMatrix[ 0 ][ 2 ], - viewMatrix[ 1 ][ 2 ], - viewMatrix[ 2 ][ 2 ] ) );\n\t\t} else {\n\t\t\tcameraToVertex = normalize( worldPosition.xyz - cameraPosition );\n\t\t}\n\t\tvec3 worldNormal = inverseTransformDirection( transformedNormal, viewMatrix );\n\t\t#ifdef ENVMAP_MODE_REFLECTION\n\t\t\tvReflect = reflect( cameraToVertex, worldNormal );\n\t\t#else\n\t\t\tvReflect = refract( cameraToVertex, worldNormal, refractionRatio );\n\t\t#endif\n\t#endif\n#endif";

	var fog_vertex = "#ifdef USE_FOG\n\tvFogDepth = - mvPosition.z;\n#endif";

	var fog_pars_vertex = "#ifdef USE_FOG\n\tvarying float vFogDepth;\n#endif";

	var fog_fragment = "#ifdef USE_FOG\n\t#ifdef FOG_EXP2\n\t\tfloat fogFactor = 1.0 - exp( - fogDensity * fogDensity * vFogDepth * vFogDepth );\n\t#else\n\t\tfloat fogFactor = smoothstep( fogNear, fogFar, vFogDepth );\n\t#endif\n\tgl_FragColor.rgb = mix( gl_FragColor.rgb, fogColor, fogFactor );\n#endif";

	var fog_pars_fragment = "#ifdef USE_FOG\n\tuniform vec3 fogColor;\n\tvarying float vFogDepth;\n\t#ifdef FOG_EXP2\n\t\tuniform float fogDensity;\n\t#else\n\t\tuniform float fogNear;\n\t\tuniform float fogFar;\n\t#endif\n#endif";

	var gradientmap_pars_fragment = "#ifdef USE_GRADIENTMAP\n\tuniform sampler2D gradientMap;\n#endif\nvec3 getGradientIrradiance( vec3 normal, vec3 lightDirection ) {\n\tfloat dotNL = dot( normal, lightDirection );\n\tvec2 coord = vec2( dotNL * 0.5 + 0.5, 0.0 );\n\t#ifdef USE_GRADIENTMAP\n\t\treturn texture2D( gradientMap, coord ).rgb;\n\t#else\n\t\treturn ( coord.x < 0.7 ) ? vec3( 0.7 ) : vec3( 1.0 );\n\t#endif\n}";

	var lightmap_fragment = "#ifdef USE_LIGHTMAP\n\tvec4 lightMapTexel = texture2D( lightMap, vUv2 );\n\tvec3 lightMapIrradiance = lightMapTexelToLinear( lightMapTexel ).rgb * lightMapIntensity;\n\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\tlightMapIrradiance *= PI;\n\t#endif\n\treflectedLight.indirectDiffuse += lightMapIrradiance;\n#endif";

	var lightmap_pars_fragment = "#ifdef USE_LIGHTMAP\n\tuniform sampler2D lightMap;\n\tuniform float lightMapIntensity;\n#endif";

	var lights_lambert_vertex = "vec3 diffuse = vec3( 1.0 );\nGeometricContext geometry;\ngeometry.position = mvPosition.xyz;\ngeometry.normal = normalize( transformedNormal );\ngeometry.viewDir = ( isOrthographic ) ? vec3( 0, 0, 1 ) : normalize( -mvPosition.xyz );\nGeometricContext backGeometry;\nbackGeometry.position = geometry.position;\nbackGeometry.normal = -geometry.normal;\nbackGeometry.viewDir = geometry.viewDir;\nvLightFront = vec3( 0.0 );\nvIndirectFront = vec3( 0.0 );\n#ifdef DOUBLE_SIDED\n\tvLightBack = vec3( 0.0 );\n\tvIndirectBack = vec3( 0.0 );\n#endif\nIncidentLight directLight;\nfloat dotNL;\nvec3 directLightColor_Diffuse;\nvIndirectFront += getAmbientLightIrradiance( ambientLightColor );\nvIndirectFront += getLightProbeIrradiance( lightProbe, geometry.normal );\n#ifdef DOUBLE_SIDED\n\tvIndirectBack += getAmbientLightIrradiance( ambientLightColor );\n\tvIndirectBack += getLightProbeIrradiance( lightProbe, backGeometry.normal );\n#endif\n#if NUM_POINT_LIGHTS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_POINT_LIGHTS; i ++ ) {\n\t\tgetPointLightInfo( pointLights[ i ], geometry, directLight );\n\t\tdotNL = dot( geometry.normal, directLight.direction );\n\t\tdirectLightColor_Diffuse = directLight.color;\n\t\tvLightFront += saturate( dotNL ) * directLightColor_Diffuse;\n\t\t#ifdef DOUBLE_SIDED\n\t\t\tvLightBack += saturate( - dotNL ) * directLightColor_Diffuse;\n\t\t#endif\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if NUM_SPOT_LIGHTS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_SPOT_LIGHTS; i ++ ) {\n\t\tgetSpotLightInfo( spotLights[ i ], geometry, directLight );\n\t\tdotNL = dot( geometry.normal, directLight.direction );\n\t\tdirectLightColor_Diffuse = directLight.color;\n\t\tvLightFront += saturate( dotNL ) * directLightColor_Diffuse;\n\t\t#ifdef DOUBLE_SIDED\n\t\t\tvLightBack += saturate( - dotNL ) * directLightColor_Diffuse;\n\t\t#endif\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if NUM_DIR_LIGHTS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_DIR_LIGHTS; i ++ ) {\n\t\tgetDirectionalLightInfo( directionalLights[ i ], geometry, directLight );\n\t\tdotNL = dot( geometry.normal, directLight.direction );\n\t\tdirectLightColor_Diffuse = directLight.color;\n\t\tvLightFront += saturate( dotNL ) * directLightColor_Diffuse;\n\t\t#ifdef DOUBLE_SIDED\n\t\t\tvLightBack += saturate( - dotNL ) * directLightColor_Diffuse;\n\t\t#endif\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if NUM_HEMI_LIGHTS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_HEMI_LIGHTS; i ++ ) {\n\t\tvIndirectFront += getHemisphereLightIrradiance( hemisphereLights[ i ], geometry.normal );\n\t\t#ifdef DOUBLE_SIDED\n\t\t\tvIndirectBack += getHemisphereLightIrradiance( hemisphereLights[ i ], backGeometry.normal );\n\t\t#endif\n\t}\n\t#pragma unroll_loop_end\n#endif";

	var lights_pars_begin = "uniform bool receiveShadow;\nuniform vec3 ambientLightColor;\nuniform vec3 lightProbe[ 9 ];\nvec3 shGetIrradianceAt( in vec3 normal, in vec3 shCoefficients[ 9 ] ) {\n\tfloat x = normal.x, y = normal.y, z = normal.z;\n\tvec3 result = shCoefficients[ 0 ] * 0.886227;\n\tresult += shCoefficients[ 1 ] * 2.0 * 0.511664 * y;\n\tresult += shCoefficients[ 2 ] * 2.0 * 0.511664 * z;\n\tresult += shCoefficients[ 3 ] * 2.0 * 0.511664 * x;\n\tresult += shCoefficients[ 4 ] * 2.0 * 0.429043 * x * y;\n\tresult += shCoefficients[ 5 ] * 2.0 * 0.429043 * y * z;\n\tresult += shCoefficients[ 6 ] * ( 0.743125 * z * z - 0.247708 );\n\tresult += shCoefficients[ 7 ] * 2.0 * 0.429043 * x * z;\n\tresult += shCoefficients[ 8 ] * 0.429043 * ( x * x - y * y );\n\treturn result;\n}\nvec3 getLightProbeIrradiance( const in vec3 lightProbe[ 9 ], const in vec3 normal ) {\n\tvec3 worldNormal = inverseTransformDirection( normal, viewMatrix );\n\tvec3 irradiance = shGetIrradianceAt( worldNormal, lightProbe );\n\treturn irradiance;\n}\nvec3 getAmbientLightIrradiance( const in vec3 ambientLightColor ) {\n\tvec3 irradiance = ambientLightColor;\n\treturn irradiance;\n}\nfloat getDistanceAttenuation( const in float lightDistance, const in float cutoffDistance, const in float decayExponent ) {\n\t#if defined ( PHYSICALLY_CORRECT_LIGHTS )\n\t\tfloat distanceFalloff = 1.0 / max( pow( lightDistance, decayExponent ), 0.01 );\n\t\tif ( cutoffDistance > 0.0 ) {\n\t\t\tdistanceFalloff *= pow2( saturate( 1.0 - pow4( lightDistance / cutoffDistance ) ) );\n\t\t}\n\t\treturn distanceFalloff;\n\t#else\n\t\tif ( cutoffDistance > 0.0 && decayExponent > 0.0 ) {\n\t\t\treturn pow( saturate( - lightDistance / cutoffDistance + 1.0 ), decayExponent );\n\t\t}\n\t\treturn 1.0;\n\t#endif\n}\nfloat getSpotAttenuation( const in float coneCosine, const in float penumbraCosine, const in float angleCosine ) {\n\treturn smoothstep( coneCosine, penumbraCosine, angleCosine );\n}\n#if NUM_DIR_LIGHTS > 0\n\tstruct DirectionalLight {\n\t\tvec3 direction;\n\t\tvec3 color;\n\t};\n\tuniform DirectionalLight directionalLights[ NUM_DIR_LIGHTS ];\n\tvoid getDirectionalLightInfo( const in DirectionalLight directionalLight, const in GeometricContext geometry, out IncidentLight light ) {\n\t\tlight.color = directionalLight.color;\n\t\tlight.direction = directionalLight.direction;\n\t\tlight.visible = true;\n\t}\n#endif\n#if NUM_POINT_LIGHTS > 0\n\tstruct PointLight {\n\t\tvec3 position;\n\t\tvec3 color;\n\t\tfloat distance;\n\t\tfloat decay;\n\t};\n\tuniform PointLight pointLights[ NUM_POINT_LIGHTS ];\n\tvoid getPointLightInfo( const in PointLight pointLight, const in GeometricContext geometry, out IncidentLight light ) {\n\t\tvec3 lVector = pointLight.position - geometry.position;\n\t\tlight.direction = normalize( lVector );\n\t\tfloat lightDistance = length( lVector );\n\t\tlight.color = pointLight.color;\n\t\tlight.color *= getDistanceAttenuation( lightDistance, pointLight.distance, pointLight.decay );\n\t\tlight.visible = ( light.color != vec3( 0.0 ) );\n\t}\n#endif\n#if NUM_SPOT_LIGHTS > 0\n\tstruct SpotLight {\n\t\tvec3 position;\n\t\tvec3 direction;\n\t\tvec3 color;\n\t\tfloat distance;\n\t\tfloat decay;\n\t\tfloat coneCos;\n\t\tfloat penumbraCos;\n\t};\n\tuniform SpotLight spotLights[ NUM_SPOT_LIGHTS ];\n\tvoid getSpotLightInfo( const in SpotLight spotLight, const in GeometricContext geometry, out IncidentLight light ) {\n\t\tvec3 lVector = spotLight.position - geometry.position;\n\t\tlight.direction = normalize( lVector );\n\t\tfloat angleCos = dot( light.direction, spotLight.direction );\n\t\tfloat spotAttenuation = getSpotAttenuation( spotLight.coneCos, spotLight.penumbraCos, angleCos );\n\t\tif ( spotAttenuation > 0.0 ) {\n\t\t\tfloat lightDistance = length( lVector );\n\t\t\tlight.color = spotLight.color * spotAttenuation;\n\t\t\tlight.color *= getDistanceAttenuation( lightDistance, spotLight.distance, spotLight.decay );\n\t\t\tlight.visible = ( light.color != vec3( 0.0 ) );\n\t\t} else {\n\t\t\tlight.color = vec3( 0.0 );\n\t\t\tlight.visible = false;\n\t\t}\n\t}\n#endif\n#if NUM_RECT_AREA_LIGHTS > 0\n\tstruct RectAreaLight {\n\t\tvec3 color;\n\t\tvec3 position;\n\t\tvec3 halfWidth;\n\t\tvec3 halfHeight;\n\t};\n\tuniform sampler2D ltc_1;\tuniform sampler2D ltc_2;\n\tuniform RectAreaLight rectAreaLights[ NUM_RECT_AREA_LIGHTS ];\n#endif\n#if NUM_HEMI_LIGHTS > 0\n\tstruct HemisphereLight {\n\t\tvec3 direction;\n\t\tvec3 skyColor;\n\t\tvec3 groundColor;\n\t};\n\tuniform HemisphereLight hemisphereLights[ NUM_HEMI_LIGHTS ];\n\tvec3 getHemisphereLightIrradiance( const in HemisphereLight hemiLight, const in vec3 normal ) {\n\t\tfloat dotNL = dot( normal, hemiLight.direction );\n\t\tfloat hemiDiffuseWeight = 0.5 * dotNL + 0.5;\n\t\tvec3 irradiance = mix( hemiLight.groundColor, hemiLight.skyColor, hemiDiffuseWeight );\n\t\treturn irradiance;\n\t}\n#endif";

	var envmap_physical_pars_fragment = "#if defined( USE_ENVMAP )\n\t#ifdef ENVMAP_MODE_REFRACTION\n\t\tuniform float refractionRatio;\n\t#endif\n\tvec3 getIBLIrradiance( const in vec3 normal ) {\n\t\t#if defined( ENVMAP_TYPE_CUBE_UV )\n\t\t\tvec3 worldNormal = inverseTransformDirection( normal, viewMatrix );\n\t\t\tvec4 envMapColor = textureCubeUV( envMap, worldNormal, 1.0 );\n\t\t\treturn PI * envMapColor.rgb * envMapIntensity;\n\t\t#else\n\t\t\treturn vec3( 0.0 );\n\t\t#endif\n\t}\n\tvec3 getIBLRadiance( const in vec3 viewDir, const in vec3 normal, const in float roughness ) {\n\t\t#if defined( ENVMAP_TYPE_CUBE_UV )\n\t\t\tvec3 reflectVec;\n\t\t\t#ifdef ENVMAP_MODE_REFLECTION\n\t\t\t\treflectVec = reflect( - viewDir, normal );\n\t\t\t\treflectVec = normalize( mix( reflectVec, normal, roughness * roughness) );\n\t\t\t#else\n\t\t\t\treflectVec = refract( - viewDir, normal, refractionRatio );\n\t\t\t#endif\n\t\t\treflectVec = inverseTransformDirection( reflectVec, viewMatrix );\n\t\t\tvec4 envMapColor = textureCubeUV( envMap, reflectVec, roughness );\n\t\t\treturn envMapColor.rgb * envMapIntensity;\n\t\t#else\n\t\t\treturn vec3( 0.0 );\n\t\t#endif\n\t}\n#endif";

	var lights_toon_fragment = "ToonMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb;";

	var lights_toon_pars_fragment = "varying vec3 vViewPosition;\nstruct ToonMaterial {\n\tvec3 diffuseColor;\n};\nvoid RE_Direct_Toon( const in IncidentLight directLight, const in GeometricContext geometry, const in ToonMaterial material, inout ReflectedLight reflectedLight ) {\n\tvec3 irradiance = getGradientIrradiance( geometry.normal, directLight.direction ) * directLight.color;\n\treflectedLight.directDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\n}\nvoid RE_IndirectDiffuse_Toon( const in vec3 irradiance, const in GeometricContext geometry, const in ToonMaterial material, inout ReflectedLight reflectedLight ) {\n\treflectedLight.indirectDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\n}\n#define RE_Direct\t\t\t\tRE_Direct_Toon\n#define RE_IndirectDiffuse\t\tRE_IndirectDiffuse_Toon\n#define Material_LightProbeLOD( material )\t(0)";

	var lights_phong_fragment = "BlinnPhongMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb;\nmaterial.specularColor = specular;\nmaterial.specularShininess = shininess;\nmaterial.specularStrength = specularStrength;";

	var lights_phong_pars_fragment = "varying vec3 vViewPosition;\nstruct BlinnPhongMaterial {\n\tvec3 diffuseColor;\n\tvec3 specularColor;\n\tfloat specularShininess;\n\tfloat specularStrength;\n};\nvoid RE_Direct_BlinnPhong( const in IncidentLight directLight, const in GeometricContext geometry, const in BlinnPhongMaterial material, inout ReflectedLight reflectedLight ) {\n\tfloat dotNL = saturate( dot( geometry.normal, directLight.direction ) );\n\tvec3 irradiance = dotNL * directLight.color;\n\treflectedLight.directDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\n\treflectedLight.directSpecular += irradiance * BRDF_BlinnPhong( directLight.direction, geometry.viewDir, geometry.normal, material.specularColor, material.specularShininess ) * material.specularStrength;\n}\nvoid RE_IndirectDiffuse_BlinnPhong( const in vec3 irradiance, const in GeometricContext geometry, const in BlinnPhongMaterial material, inout ReflectedLight reflectedLight ) {\n\treflectedLight.indirectDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\n}\n#define RE_Direct\t\t\t\tRE_Direct_BlinnPhong\n#define RE_IndirectDiffuse\t\tRE_IndirectDiffuse_BlinnPhong\n#define Material_LightProbeLOD( material )\t(0)";

	var lights_physical_fragment = "PhysicalMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb * ( 1.0 - metalnessFactor );\nvec3 dxy = max( abs( dFdx( geometryNormal ) ), abs( dFdy( geometryNormal ) ) );\nfloat geometryRoughness = max( max( dxy.x, dxy.y ), dxy.z );\nmaterial.roughness = max( roughnessFactor, 0.0525 );material.roughness += geometryRoughness;\nmaterial.roughness = min( material.roughness, 1.0 );\n#ifdef IOR\n\t#ifdef SPECULAR\n\t\tfloat specularIntensityFactor = specularIntensity;\n\t\tvec3 specularTintFactor = specularTint;\n\t\t#ifdef USE_SPECULARINTENSITYMAP\n\t\t\tspecularIntensityFactor *= texture2D( specularIntensityMap, vUv ).a;\n\t\t#endif\n\t\t#ifdef USE_SPECULARTINTMAP\n\t\t\tspecularTintFactor *= specularTintMapTexelToLinear( texture2D( specularTintMap, vUv ) ).rgb;\n\t\t#endif\n\t\tmaterial.specularF90 = mix( specularIntensityFactor, 1.0, metalnessFactor );\n\t#else\n\t\tfloat specularIntensityFactor = 1.0;\n\t\tvec3 specularTintFactor = vec3( 1.0 );\n\t\tmaterial.specularF90 = 1.0;\n\t#endif\n\tmaterial.specularColor = mix( min( pow2( ( ior - 1.0 ) / ( ior + 1.0 ) ) * specularTintFactor, vec3( 1.0 ) ) * specularIntensityFactor, diffuseColor.rgb, metalnessFactor );\n#else\n\tmaterial.specularColor = mix( vec3( 0.04 ), diffuseColor.rgb, metalnessFactor );\n\tmaterial.specularF90 = 1.0;\n#endif\n#ifdef USE_CLEARCOAT\n\tmaterial.clearcoat = clearcoat;\n\tmaterial.clearcoatRoughness = clearcoatRoughness;\n\tmaterial.clearcoatF0 = vec3( 0.04 );\n\tmaterial.clearcoatF90 = 1.0;\n\t#ifdef USE_CLEARCOATMAP\n\t\tmaterial.clearcoat *= texture2D( clearcoatMap, vUv ).x;\n\t#endif\n\t#ifdef USE_CLEARCOAT_ROUGHNESSMAP\n\t\tmaterial.clearcoatRoughness *= texture2D( clearcoatRoughnessMap, vUv ).y;\n\t#endif\n\tmaterial.clearcoat = saturate( material.clearcoat );\tmaterial.clearcoatRoughness = max( material.clearcoatRoughness, 0.0525 );\n\tmaterial.clearcoatRoughness += geometryRoughness;\n\tmaterial.clearcoatRoughness = min( material.clearcoatRoughness, 1.0 );\n#endif\n#ifdef USE_SHEEN\n\tmaterial.sheenTint = sheenTint;\n\tmaterial.sheenRoughness = clamp( sheenRoughness, 0.07, 1.0 );\n#endif";

	var lights_physical_pars_fragment = "struct PhysicalMaterial {\n\tvec3 diffuseColor;\n\tfloat roughness;\n\tvec3 specularColor;\n\tfloat specularF90;\n\t#ifdef USE_CLEARCOAT\n\t\tfloat clearcoat;\n\t\tfloat clearcoatRoughness;\n\t\tvec3 clearcoatF0;\n\t\tfloat clearcoatF90;\n\t#endif\n\t#ifdef USE_SHEEN\n\t\tvec3 sheenTint;\n\t\tfloat sheenRoughness;\n\t#endif\n};\nvec3 clearcoatSpecular = vec3( 0.0 );\nvec2 DFGApprox( const in vec3 normal, const in vec3 viewDir, const in float roughness ) {\n\tfloat dotNV = saturate( dot( normal, viewDir ) );\n\tconst vec4 c0 = vec4( - 1, - 0.0275, - 0.572, 0.022 );\n\tconst vec4 c1 = vec4( 1, 0.0425, 1.04, - 0.04 );\n\tvec4 r = roughness * c0 + c1;\n\tfloat a004 = min( r.x * r.x, exp2( - 9.28 * dotNV ) ) * r.x + r.y;\n\tvec2 fab = vec2( - 1.04, 1.04 ) * a004 + r.zw;\n\treturn fab;\n}\nvec3 EnvironmentBRDF( const in vec3 normal, const in vec3 viewDir, const in vec3 specularColor, const in float specularF90, const in float roughness ) {\n\tvec2 fab = DFGApprox( normal, viewDir, roughness );\n\treturn specularColor * fab.x + specularF90 * fab.y;\n}\nvoid computeMultiscattering( const in vec3 normal, const in vec3 viewDir, const in vec3 specularColor, const in float specularF90, const in float roughness, inout vec3 singleScatter, inout vec3 multiScatter ) {\n\tvec2 fab = DFGApprox( normal, viewDir, roughness );\n\tvec3 FssEss = specularColor * fab.x + specularF90 * fab.y;\n\tfloat Ess = fab.x + fab.y;\n\tfloat Ems = 1.0 - Ess;\n\tvec3 Favg = specularColor + ( 1.0 - specularColor ) * 0.047619;\tvec3 Fms = FssEss * Favg / ( 1.0 - Ems * Favg );\n\tsingleScatter += FssEss;\n\tmultiScatter += Fms * Ems;\n}\n#if NUM_RECT_AREA_LIGHTS > 0\n\tvoid RE_Direct_RectArea_Physical( const in RectAreaLight rectAreaLight, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n\t\tvec3 normal = geometry.normal;\n\t\tvec3 viewDir = geometry.viewDir;\n\t\tvec3 position = geometry.position;\n\t\tvec3 lightPos = rectAreaLight.position;\n\t\tvec3 halfWidth = rectAreaLight.halfWidth;\n\t\tvec3 halfHeight = rectAreaLight.halfHeight;\n\t\tvec3 lightColor = rectAreaLight.color;\n\t\tfloat roughness = material.roughness;\n\t\tvec3 rectCoords[ 4 ];\n\t\trectCoords[ 0 ] = lightPos + halfWidth - halfHeight;\t\trectCoords[ 1 ] = lightPos - halfWidth - halfHeight;\n\t\trectCoords[ 2 ] = lightPos - halfWidth + halfHeight;\n\t\trectCoords[ 3 ] = lightPos + halfWidth + halfHeight;\n\t\tvec2 uv = LTC_Uv( normal, viewDir, roughness );\n\t\tvec4 t1 = texture2D( ltc_1, uv );\n\t\tvec4 t2 = texture2D( ltc_2, uv );\n\t\tmat3 mInv = mat3(\n\t\t\tvec3( t1.x, 0, t1.y ),\n\t\t\tvec3(		0, 1,		0 ),\n\t\t\tvec3( t1.z, 0, t1.w )\n\t\t);\n\t\tvec3 fresnel = ( material.specularColor * t2.x + ( vec3( 1.0 ) - material.specularColor ) * t2.y );\n\t\treflectedLight.directSpecular += lightColor * fresnel * LTC_Evaluate( normal, viewDir, position, mInv, rectCoords );\n\t\treflectedLight.directDiffuse += lightColor * material.diffuseColor * LTC_Evaluate( normal, viewDir, position, mat3( 1.0 ), rectCoords );\n\t}\n#endif\nvoid RE_Direct_Physical( const in IncidentLight directLight, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n\tfloat dotNL = saturate( dot( geometry.normal, directLight.direction ) );\n\tvec3 irradiance = dotNL * directLight.color;\n\t#ifdef USE_CLEARCOAT\n\t\tfloat dotNLcc = saturate( dot( geometry.clearcoatNormal, directLight.direction ) );\n\t\tvec3 ccIrradiance = dotNLcc * directLight.color;\n\t\tclearcoatSpecular += ccIrradiance * BRDF_GGX( directLight.direction, geometry.viewDir, geometry.clearcoatNormal, material.clearcoatF0, material.clearcoatF90, material.clearcoatRoughness );\n\t#endif\n\t#ifdef USE_SHEEN\n\t\treflectedLight.directSpecular += irradiance * BRDF_Sheen( directLight.direction, geometry.viewDir, geometry.normal, material.sheenTint, material.sheenRoughness );\n\t#endif\n\treflectedLight.directSpecular += irradiance * BRDF_GGX( directLight.direction, geometry.viewDir, geometry.normal, material.specularColor, material.specularF90, material.roughness );\n\treflectedLight.directDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\n}\nvoid RE_IndirectDiffuse_Physical( const in vec3 irradiance, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n\treflectedLight.indirectDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\n}\nvoid RE_IndirectSpecular_Physical( const in vec3 radiance, const in vec3 irradiance, const in vec3 clearcoatRadiance, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight) {\n\t#ifdef USE_CLEARCOAT\n\t\tclearcoatSpecular += clearcoatRadiance * EnvironmentBRDF( geometry.clearcoatNormal, geometry.viewDir, material.clearcoatF0, material.clearcoatF90, material.clearcoatRoughness );\n\t#endif\n\tvec3 singleScattering = vec3( 0.0 );\n\tvec3 multiScattering = vec3( 0.0 );\n\tvec3 cosineWeightedIrradiance = irradiance * RECIPROCAL_PI;\n\tcomputeMultiscattering( geometry.normal, geometry.viewDir, material.specularColor, material.specularF90, material.roughness, singleScattering, multiScattering );\n\tvec3 diffuse = material.diffuseColor * ( 1.0 - ( singleScattering + multiScattering ) );\n\treflectedLight.indirectSpecular += radiance * singleScattering;\n\treflectedLight.indirectSpecular += multiScattering * cosineWeightedIrradiance;\n\treflectedLight.indirectDiffuse += diffuse * cosineWeightedIrradiance;\n}\n#define RE_Direct\t\t\t\tRE_Direct_Physical\n#define RE_Direct_RectArea\t\tRE_Direct_RectArea_Physical\n#define RE_IndirectDiffuse\t\tRE_IndirectDiffuse_Physical\n#define RE_IndirectSpecular\t\tRE_IndirectSpecular_Physical\nfloat computeSpecularOcclusion( const in float dotNV, const in float ambientOcclusion, const in float roughness ) {\n\treturn saturate( pow( dotNV + ambientOcclusion, exp2( - 16.0 * roughness - 1.0 ) ) - 1.0 + ambientOcclusion );\n}";

	var lights_fragment_begin = "\nGeometricContext geometry;\ngeometry.position = - vViewPosition;\ngeometry.normal = normal;\ngeometry.viewDir = ( isOrthographic ) ? vec3( 0, 0, 1 ) : normalize( vViewPosition );\n#ifdef USE_CLEARCOAT\n\tgeometry.clearcoatNormal = clearcoatNormal;\n#endif\nIncidentLight directLight;\n#if ( NUM_POINT_LIGHTS > 0 ) && defined( RE_Direct )\n\tPointLight pointLight;\n\t#if defined( USE_SHADOWMAP ) && NUM_POINT_LIGHT_SHADOWS > 0\n\tPointLightShadow pointLightShadow;\n\t#endif\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_POINT_LIGHTS; i ++ ) {\n\t\tpointLight = pointLights[ i ];\n\t\tgetPointLightInfo( pointLight, geometry, directLight );\n\t\t#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_POINT_LIGHT_SHADOWS )\n\t\tpointLightShadow = pointLightShadows[ i ];\n\t\tdirectLight.color *= all( bvec2( directLight.visible, receiveShadow ) ) ? getPointShadow( pointShadowMap[ i ], pointLightShadow.shadowMapSize, pointLightShadow.shadowBias, pointLightShadow.shadowRadius, vPointShadowCoord[ i ], pointLightShadow.shadowCameraNear, pointLightShadow.shadowCameraFar ) : 1.0;\n\t\t#endif\n\t\tRE_Direct( directLight, geometry, material, reflectedLight );\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if ( NUM_SPOT_LIGHTS > 0 ) && defined( RE_Direct )\n\tSpotLight spotLight;\n\t#if defined( USE_SHADOWMAP ) && NUM_SPOT_LIGHT_SHADOWS > 0\n\tSpotLightShadow spotLightShadow;\n\t#endif\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_SPOT_LIGHTS; i ++ ) {\n\t\tspotLight = spotLights[ i ];\n\t\tgetSpotLightInfo( spotLight, geometry, directLight );\n\t\t#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_SPOT_LIGHT_SHADOWS )\n\t\tspotLightShadow = spotLightShadows[ i ];\n\t\tdirectLight.color *= all( bvec2( directLight.visible, receiveShadow ) ) ? getShadow( spotShadowMap[ i ], spotLightShadow.shadowMapSize, spotLightShadow.shadowBias, spotLightShadow.shadowRadius, vSpotShadowCoord[ i ] ) : 1.0;\n\t\t#endif\n\t\tRE_Direct( directLight, geometry, material, reflectedLight );\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if ( NUM_DIR_LIGHTS > 0 ) && defined( RE_Direct )\n\tDirectionalLight directionalLight;\n\t#if defined( USE_SHADOWMAP ) && NUM_DIR_LIGHT_SHADOWS > 0\n\tDirectionalLightShadow directionalLightShadow;\n\t#endif\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_DIR_LIGHTS; i ++ ) {\n\t\tdirectionalLight = directionalLights[ i ];\n\t\tgetDirectionalLightInfo( directionalLight, geometry, directLight );\n\t\t#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_DIR_LIGHT_SHADOWS )\n\t\tdirectionalLightShadow = directionalLightShadows[ i ];\n\t\tdirectLight.color *= all( bvec2( directLight.visible, receiveShadow ) ) ? getShadow( directionalShadowMap[ i ], directionalLightShadow.shadowMapSize, directionalLightShadow.shadowBias, directionalLightShadow.shadowRadius, vDirectionalShadowCoord[ i ] ) : 1.0;\n\t\t#endif\n\t\tRE_Direct( directLight, geometry, material, reflectedLight );\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if ( NUM_RECT_AREA_LIGHTS > 0 ) && defined( RE_Direct_RectArea )\n\tRectAreaLight rectAreaLight;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_RECT_AREA_LIGHTS; i ++ ) {\n\t\trectAreaLight = rectAreaLights[ i ];\n\t\tRE_Direct_RectArea( rectAreaLight, geometry, material, reflectedLight );\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if defined( RE_IndirectDiffuse )\n\tvec3 iblIrradiance = vec3( 0.0 );\n\tvec3 irradiance = getAmbientLightIrradiance( ambientLightColor );\n\tirradiance += getLightProbeIrradiance( lightProbe, geometry.normal );\n\t#if ( NUM_HEMI_LIGHTS > 0 )\n\t\t#pragma unroll_loop_start\n\t\tfor ( int i = 0; i < NUM_HEMI_LIGHTS; i ++ ) {\n\t\t\tirradiance += getHemisphereLightIrradiance( hemisphereLights[ i ], geometry.normal );\n\t\t}\n\t\t#pragma unroll_loop_end\n\t#endif\n#endif\n#if defined( RE_IndirectSpecular )\n\tvec3 radiance = vec3( 0.0 );\n\tvec3 clearcoatRadiance = vec3( 0.0 );\n#endif";

	var lights_fragment_maps = "#if defined( RE_IndirectDiffuse )\n\t#ifdef USE_LIGHTMAP\n\t\tvec4 lightMapTexel = texture2D( lightMap, vUv2 );\n\t\tvec3 lightMapIrradiance = lightMapTexelToLinear( lightMapTexel ).rgb * lightMapIntensity;\n\t\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\t\tlightMapIrradiance *= PI;\n\t\t#endif\n\t\tirradiance += lightMapIrradiance;\n\t#endif\n\t#if defined( USE_ENVMAP ) && defined( STANDARD ) && defined( ENVMAP_TYPE_CUBE_UV )\n\t\tiblIrradiance += getIBLIrradiance( geometry.normal );\n\t#endif\n#endif\n#if defined( USE_ENVMAP ) && defined( RE_IndirectSpecular )\n\tradiance += getIBLRadiance( geometry.viewDir, geometry.normal, material.roughness );\n\t#ifdef USE_CLEARCOAT\n\t\tclearcoatRadiance += getIBLRadiance( geometry.viewDir, geometry.clearcoatNormal, material.clearcoatRoughness );\n\t#endif\n#endif";

	var lights_fragment_end = "#if defined( RE_IndirectDiffuse )\n\tRE_IndirectDiffuse( irradiance, geometry, material, reflectedLight );\n#endif\n#if defined( RE_IndirectSpecular )\n\tRE_IndirectSpecular( radiance, iblIrradiance, clearcoatRadiance, geometry, material, reflectedLight );\n#endif";

	var logdepthbuf_fragment = "#if defined( USE_LOGDEPTHBUF ) && defined( USE_LOGDEPTHBUF_EXT )\n\tgl_FragDepthEXT = vIsPerspective == 0.0 ? gl_FragCoord.z : log2( vFragDepth ) * logDepthBufFC * 0.5;\n#endif";

	var logdepthbuf_pars_fragment = "#if defined( USE_LOGDEPTHBUF ) && defined( USE_LOGDEPTHBUF_EXT )\n\tuniform float logDepthBufFC;\n\tvarying float vFragDepth;\n\tvarying float vIsPerspective;\n#endif";

	var logdepthbuf_pars_vertex = "#ifdef USE_LOGDEPTHBUF\n\t#ifdef USE_LOGDEPTHBUF_EXT\n\t\tvarying float vFragDepth;\n\t\tvarying float vIsPerspective;\n\t#else\n\t\tuniform float logDepthBufFC;\n\t#endif\n#endif";

	var logdepthbuf_vertex = "#ifdef USE_LOGDEPTHBUF\n\t#ifdef USE_LOGDEPTHBUF_EXT\n\t\tvFragDepth = 1.0 + gl_Position.w;\n\t\tvIsPerspective = float( isPerspectiveMatrix( projectionMatrix ) );\n\t#else\n\t\tif ( isPerspectiveMatrix( projectionMatrix ) ) {\n\t\t\tgl_Position.z = log2( max( EPSILON, gl_Position.w + 1.0 ) ) * logDepthBufFC - 1.0;\n\t\t\tgl_Position.z *= gl_Position.w;\n\t\t}\n\t#endif\n#endif";

	var map_fragment = "#ifdef USE_MAP\n\tvec4 texelColor = texture2D( map, vUv );\n\ttexelColor = mapTexelToLinear( texelColor );\n\tdiffuseColor *= texelColor;\n#endif";

	var map_pars_fragment = "#ifdef USE_MAP\n\tuniform sampler2D map;\n#endif";

	var map_particle_fragment = "#if defined( USE_MAP ) || defined( USE_ALPHAMAP )\n\tvec2 uv = ( uvTransform * vec3( gl_PointCoord.x, 1.0 - gl_PointCoord.y, 1 ) ).xy;\n#endif\n#ifdef USE_MAP\n\tvec4 mapTexel = texture2D( map, uv );\n\tdiffuseColor *= mapTexelToLinear( mapTexel );\n#endif\n#ifdef USE_ALPHAMAP\n\tdiffuseColor.a *= texture2D( alphaMap, uv ).g;\n#endif";

	var map_particle_pars_fragment = "#if defined( USE_MAP ) || defined( USE_ALPHAMAP )\n\tuniform mat3 uvTransform;\n#endif\n#ifdef USE_MAP\n\tuniform sampler2D map;\n#endif\n#ifdef USE_ALPHAMAP\n\tuniform sampler2D alphaMap;\n#endif";

	var metalnessmap_fragment = "float metalnessFactor = metalness;\n#ifdef USE_METALNESSMAP\n\tvec4 texelMetalness = texture2D( metalnessMap, vUv );\n\tmetalnessFactor *= texelMetalness.b;\n#endif";

	var metalnessmap_pars_fragment = "#ifdef USE_METALNESSMAP\n\tuniform sampler2D metalnessMap;\n#endif";

	var morphnormal_vertex = "#ifdef USE_MORPHNORMALS\n\tobjectNormal *= morphTargetBaseInfluence;\n\t#ifdef MORPHTARGETS_TEXTURE\n\t\tfor ( int i = 0; i < MORPHTARGETS_COUNT; i ++ ) {\n\t\t\tif ( morphTargetInfluences[ i ] > 0.0 ) objectNormal += getMorph( gl_VertexID, i, 1, 2 ) * morphTargetInfluences[ i ];\n\t\t}\n\t#else\n\t\tobjectNormal += morphNormal0 * morphTargetInfluences[ 0 ];\n\t\tobjectNormal += morphNormal1 * morphTargetInfluences[ 1 ];\n\t\tobjectNormal += morphNormal2 * morphTargetInfluences[ 2 ];\n\t\tobjectNormal += morphNormal3 * morphTargetInfluences[ 3 ];\n\t#endif\n#endif";

	var morphtarget_pars_vertex = "#ifdef USE_MORPHTARGETS\n\tuniform float morphTargetBaseInfluence;\n\t#ifdef MORPHTARGETS_TEXTURE\n\t\tuniform float morphTargetInfluences[ MORPHTARGETS_COUNT ];\n\t\tuniform sampler2DArray morphTargetsTexture;\n\t\tuniform vec2 morphTargetsTextureSize;\n\t\tvec3 getMorph( const in int vertexIndex, const in int morphTargetIndex, const in int offset, const in int stride ) {\n\t\t\tfloat texelIndex = float( vertexIndex * stride + offset );\n\t\t\tfloat y = floor( texelIndex / morphTargetsTextureSize.x );\n\t\t\tfloat x = texelIndex - y * morphTargetsTextureSize.x;\n\t\t\tvec3 morphUV = vec3( ( x + 0.5 ) / morphTargetsTextureSize.x, y / morphTargetsTextureSize.y, morphTargetIndex );\n\t\t\treturn texture( morphTargetsTexture, morphUV ).xyz;\n\t\t}\n\t#else\n\t\t#ifndef USE_MORPHNORMALS\n\t\t\tuniform float morphTargetInfluences[ 8 ];\n\t\t#else\n\t\t\tuniform float morphTargetInfluences[ 4 ];\n\t\t#endif\n\t#endif\n#endif";

	var morphtarget_vertex = "#ifdef USE_MORPHTARGETS\n\ttransformed *= morphTargetBaseInfluence;\n\t#ifdef MORPHTARGETS_TEXTURE\n\t\tfor ( int i = 0; i < MORPHTARGETS_COUNT; i ++ ) {\n\t\t\t#ifndef USE_MORPHNORMALS\n\t\t\t\tif ( morphTargetInfluences[ i ] > 0.0 ) transformed += getMorph( gl_VertexID, i, 0, 1 ) * morphTargetInfluences[ i ];\n\t\t\t#else\n\t\t\t\tif ( morphTargetInfluences[ i ] > 0.0 ) transformed += getMorph( gl_VertexID, i, 0, 2 ) * morphTargetInfluences[ i ];\n\t\t\t#endif\n\t\t}\n\t#else\n\t\ttransformed += morphTarget0 * morphTargetInfluences[ 0 ];\n\t\ttransformed += morphTarget1 * morphTargetInfluences[ 1 ];\n\t\ttransformed += morphTarget2 * morphTargetInfluences[ 2 ];\n\t\ttransformed += morphTarget3 * morphTargetInfluences[ 3 ];\n\t\t#ifndef USE_MORPHNORMALS\n\t\t\ttransformed += morphTarget4 * morphTargetInfluences[ 4 ];\n\t\t\ttransformed += morphTarget5 * morphTargetInfluences[ 5 ];\n\t\t\ttransformed += morphTarget6 * morphTargetInfluences[ 6 ];\n\t\t\ttransformed += morphTarget7 * morphTargetInfluences[ 7 ];\n\t\t#endif\n\t#endif\n#endif";

	var normal_fragment_begin = "float faceDirection = gl_FrontFacing ? 1.0 : - 1.0;\n#ifdef FLAT_SHADED\n\tvec3 fdx = vec3( dFdx( vViewPosition.x ), dFdx( vViewPosition.y ), dFdx( vViewPosition.z ) );\n\tvec3 fdy = vec3( dFdy( vViewPosition.x ), dFdy( vViewPosition.y ), dFdy( vViewPosition.z ) );\n\tvec3 normal = normalize( cross( fdx, fdy ) );\n#else\n\tvec3 normal = normalize( vNormal );\n\t#ifdef DOUBLE_SIDED\n\t\tnormal = normal * faceDirection;\n\t#endif\n\t#ifdef USE_TANGENT\n\t\tvec3 tangent = normalize( vTangent );\n\t\tvec3 bitangent = normalize( vBitangent );\n\t\t#ifdef DOUBLE_SIDED\n\t\t\ttangent = tangent * faceDirection;\n\t\t\tbitangent = bitangent * faceDirection;\n\t\t#endif\n\t\t#if defined( TANGENTSPACE_NORMALMAP ) || defined( USE_CLEARCOAT_NORMALMAP )\n\t\t\tmat3 vTBN = mat3( tangent, bitangent, normal );\n\t\t#endif\n\t#endif\n#endif\nvec3 geometryNormal = normal;";

	var normal_fragment_maps = "#ifdef OBJECTSPACE_NORMALMAP\n\tnormal = texture2D( normalMap, vUv ).xyz * 2.0 - 1.0;\n\t#ifdef FLIP_SIDED\n\t\tnormal = - normal;\n\t#endif\n\t#ifdef DOUBLE_SIDED\n\t\tnormal = normal * faceDirection;\n\t#endif\n\tnormal = normalize( normalMatrix * normal );\n#elif defined( TANGENTSPACE_NORMALMAP )\n\tvec3 mapN = texture2D( normalMap, vUv ).xyz * 2.0 - 1.0;\n\tmapN.xy *= normalScale;\n\t#ifdef USE_TANGENT\n\t\tnormal = normalize( vTBN * mapN );\n\t#else\n\t\tnormal = perturbNormal2Arb( - vViewPosition, normal, mapN, faceDirection );\n\t#endif\n#elif defined( USE_BUMPMAP )\n\tnormal = perturbNormalArb( - vViewPosition, normal, dHdxy_fwd(), faceDirection );\n#endif";

	var normal_pars_fragment = "#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n\t#ifdef USE_TANGENT\n\t\tvarying vec3 vTangent;\n\t\tvarying vec3 vBitangent;\n\t#endif\n#endif";

	var normal_pars_vertex = "#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n\t#ifdef USE_TANGENT\n\t\tvarying vec3 vTangent;\n\t\tvarying vec3 vBitangent;\n\t#endif\n#endif";

	var normal_vertex = "#ifndef FLAT_SHADED\n\tvNormal = normalize( transformedNormal );\n\t#ifdef USE_TANGENT\n\t\tvTangent = normalize( transformedTangent );\n\t\tvBitangent = normalize( cross( vNormal, vTangent ) * tangent.w );\n\t#endif\n#endif";

	var normalmap_pars_fragment = "#ifdef USE_NORMALMAP\n\tuniform sampler2D normalMap;\n\tuniform vec2 normalScale;\n#endif\n#ifdef OBJECTSPACE_NORMALMAP\n\tuniform mat3 normalMatrix;\n#endif\n#if ! defined ( USE_TANGENT ) && ( defined ( TANGENTSPACE_NORMALMAP ) || defined ( USE_CLEARCOAT_NORMALMAP ) )\n\tvec3 perturbNormal2Arb( vec3 eye_pos, vec3 surf_norm, vec3 mapN, float faceDirection ) {\n\t\tvec3 q0 = vec3( dFdx( eye_pos.x ), dFdx( eye_pos.y ), dFdx( eye_pos.z ) );\n\t\tvec3 q1 = vec3( dFdy( eye_pos.x ), dFdy( eye_pos.y ), dFdy( eye_pos.z ) );\n\t\tvec2 st0 = dFdx( vUv.st );\n\t\tvec2 st1 = dFdy( vUv.st );\n\t\tvec3 N = surf_norm;\n\t\tvec3 q1perp = cross( q1, N );\n\t\tvec3 q0perp = cross( N, q0 );\n\t\tvec3 T = q1perp * st0.x + q0perp * st1.x;\n\t\tvec3 B = q1perp * st0.y + q0perp * st1.y;\n\t\tfloat det = max( dot( T, T ), dot( B, B ) );\n\t\tfloat scale = ( det == 0.0 ) ? 0.0 : faceDirection * inversesqrt( det );\n\t\treturn normalize( T * ( mapN.x * scale ) + B * ( mapN.y * scale ) + N * mapN.z );\n\t}\n#endif";

	var clearcoat_normal_fragment_begin = "#ifdef USE_CLEARCOAT\n\tvec3 clearcoatNormal = geometryNormal;\n#endif";

	var clearcoat_normal_fragment_maps = "#ifdef USE_CLEARCOAT_NORMALMAP\n\tvec3 clearcoatMapN = texture2D( clearcoatNormalMap, vUv ).xyz * 2.0 - 1.0;\n\tclearcoatMapN.xy *= clearcoatNormalScale;\n\t#ifdef USE_TANGENT\n\t\tclearcoatNormal = normalize( vTBN * clearcoatMapN );\n\t#else\n\t\tclearcoatNormal = perturbNormal2Arb( - vViewPosition, clearcoatNormal, clearcoatMapN, faceDirection );\n\t#endif\n#endif";

	var clearcoat_pars_fragment = "#ifdef USE_CLEARCOATMAP\n\tuniform sampler2D clearcoatMap;\n#endif\n#ifdef USE_CLEARCOAT_ROUGHNESSMAP\n\tuniform sampler2D clearcoatRoughnessMap;\n#endif\n#ifdef USE_CLEARCOAT_NORMALMAP\n\tuniform sampler2D clearcoatNormalMap;\n\tuniform vec2 clearcoatNormalScale;\n#endif";

	var output_fragment = "#ifdef OPAQUE\ndiffuseColor.a = 1.0;\n#endif\n#ifdef USE_TRANSMISSION\ndiffuseColor.a *= transmissionAlpha + 0.1;\n#endif\ngl_FragColor = vec4( outgoingLight, diffuseColor.a );";

	var packing = "vec3 packNormalToRGB( const in vec3 normal ) {\n\treturn normalize( normal ) * 0.5 + 0.5;\n}\nvec3 unpackRGBToNormal( const in vec3 rgb ) {\n\treturn 2.0 * rgb.xyz - 1.0;\n}\nconst float PackUpscale = 256. / 255.;const float UnpackDownscale = 255. / 256.;\nconst vec3 PackFactors = vec3( 256. * 256. * 256., 256. * 256., 256. );\nconst vec4 UnpackFactors = UnpackDownscale / vec4( PackFactors, 1. );\nconst float ShiftRight8 = 1. / 256.;\nvec4 packDepthToRGBA( const in float v ) {\n\tvec4 r = vec4( fract( v * PackFactors ), v );\n\tr.yzw -= r.xyz * ShiftRight8;\treturn r * PackUpscale;\n}\nfloat unpackRGBAToDepth( const in vec4 v ) {\n\treturn dot( v, UnpackFactors );\n}\nvec4 pack2HalfToRGBA( vec2 v ) {\n\tvec4 r = vec4( v.x, fract( v.x * 255.0 ), v.y, fract( v.y * 255.0 ) );\n\treturn vec4( r.x - r.y / 255.0, r.y, r.z - r.w / 255.0, r.w );\n}\nvec2 unpackRGBATo2Half( vec4 v ) {\n\treturn vec2( v.x + ( v.y / 255.0 ), v.z + ( v.w / 255.0 ) );\n}\nfloat viewZToOrthographicDepth( const in float viewZ, const in float near, const in float far ) {\n\treturn ( viewZ + near ) / ( near - far );\n}\nfloat orthographicDepthToViewZ( const in float linearClipZ, const in float near, const in float far ) {\n\treturn linearClipZ * ( near - far ) - near;\n}\nfloat viewZToPerspectiveDepth( const in float viewZ, const in float near, const in float far ) {\n\treturn ( ( near + viewZ ) * far ) / ( ( far - near ) * viewZ );\n}\nfloat perspectiveDepthToViewZ( const in float invClipZ, const in float near, const in float far ) {\n\treturn ( near * far ) / ( ( far - near ) * invClipZ - far );\n}";

	var premultiplied_alpha_fragment = "#ifdef PREMULTIPLIED_ALPHA\n\tgl_FragColor.rgb *= gl_FragColor.a;\n#endif";

	var project_vertex = "vec4 mvPosition = vec4( transformed, 1.0 );\n#ifdef USE_INSTANCING\n\tmvPosition = instanceMatrix * mvPosition;\n#endif\nmvPosition = modelViewMatrix * mvPosition;\ngl_Position = projectionMatrix * mvPosition;";

	var dithering_fragment = "#ifdef DITHERING\n\tgl_FragColor.rgb = dithering( gl_FragColor.rgb );\n#endif";

	var dithering_pars_fragment = "#ifdef DITHERING\n\tvec3 dithering( vec3 color ) {\n\t\tfloat grid_position = rand( gl_FragCoord.xy );\n\t\tvec3 dither_shift_RGB = vec3( 0.25 / 255.0, -0.25 / 255.0, 0.25 / 255.0 );\n\t\tdither_shift_RGB = mix( 2.0 * dither_shift_RGB, -2.0 * dither_shift_RGB, grid_position );\n\t\treturn color + dither_shift_RGB;\n\t}\n#endif";

	var roughnessmap_fragment = "float roughnessFactor = roughness;\n#ifdef USE_ROUGHNESSMAP\n\tvec4 texelRoughness = texture2D( roughnessMap, vUv );\n\troughnessFactor *= texelRoughness.g;\n#endif";

	var roughnessmap_pars_fragment = "#ifdef USE_ROUGHNESSMAP\n\tuniform sampler2D roughnessMap;\n#endif";

	var shadowmap_pars_fragment = "#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHT_SHADOWS > 0\n\t\tuniform sampler2D directionalShadowMap[ NUM_DIR_LIGHT_SHADOWS ];\n\t\tvarying vec4 vDirectionalShadowCoord[ NUM_DIR_LIGHT_SHADOWS ];\n\t\tstruct DirectionalLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t};\n\t\tuniform DirectionalLightShadow directionalLightShadows[ NUM_DIR_LIGHT_SHADOWS ];\n\t#endif\n\t#if NUM_SPOT_LIGHT_SHADOWS > 0\n\t\tuniform sampler2D spotShadowMap[ NUM_SPOT_LIGHT_SHADOWS ];\n\t\tvarying vec4 vSpotShadowCoord[ NUM_SPOT_LIGHT_SHADOWS ];\n\t\tstruct SpotLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t};\n\t\tuniform SpotLightShadow spotLightShadows[ NUM_SPOT_LIGHT_SHADOWS ];\n\t#endif\n\t#if NUM_POINT_LIGHT_SHADOWS > 0\n\t\tuniform sampler2D pointShadowMap[ NUM_POINT_LIGHT_SHADOWS ];\n\t\tvarying vec4 vPointShadowCoord[ NUM_POINT_LIGHT_SHADOWS ];\n\t\tstruct PointLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t\tfloat shadowCameraNear;\n\t\t\tfloat shadowCameraFar;\n\t\t};\n\t\tuniform PointLightShadow pointLightShadows[ NUM_POINT_LIGHT_SHADOWS ];\n\t#endif\n\tfloat texture2DCompare( sampler2D depths, vec2 uv, float compare ) {\n\t\treturn step( compare, unpackRGBAToDepth( texture2D( depths, uv ) ) );\n\t}\n\tvec2 texture2DDistribution( sampler2D shadow, vec2 uv ) {\n\t\treturn unpackRGBATo2Half( texture2D( shadow, uv ) );\n\t}\n\tfloat VSMShadow (sampler2D shadow, vec2 uv, float compare ){\n\t\tfloat occlusion = 1.0;\n\t\tvec2 distribution = texture2DDistribution( shadow, uv );\n\t\tfloat hard_shadow = step( compare , distribution.x );\n\t\tif (hard_shadow != 1.0 ) {\n\t\t\tfloat distance = compare - distribution.x ;\n\t\t\tfloat variance = max( 0.00000, distribution.y * distribution.y );\n\t\t\tfloat softness_probability = variance / (variance + distance * distance );\t\t\tsoftness_probability = clamp( ( softness_probability - 0.3 ) / ( 0.95 - 0.3 ), 0.0, 1.0 );\t\t\tocclusion = clamp( max( hard_shadow, softness_probability ), 0.0, 1.0 );\n\t\t}\n\t\treturn occlusion;\n\t}\n\tfloat getShadow( sampler2D shadowMap, vec2 shadowMapSize, float shadowBias, float shadowRadius, vec4 shadowCoord ) {\n\t\tfloat shadow = 1.0;\n\t\tshadowCoord.xyz /= shadowCoord.w;\n\t\tshadowCoord.z += shadowBias;\n\t\tbvec4 inFrustumVec = bvec4 ( shadowCoord.x >= 0.0, shadowCoord.x <= 1.0, shadowCoord.y >= 0.0, shadowCoord.y <= 1.0 );\n\t\tbool inFrustum = all( inFrustumVec );\n\t\tbvec2 frustumTestVec = bvec2( inFrustum, shadowCoord.z <= 1.0 );\n\t\tbool frustumTest = all( frustumTestVec );\n\t\tif ( frustumTest ) {\n\t\t#if defined( SHADOWMAP_TYPE_PCF )\n\t\t\tvec2 texelSize = vec2( 1.0 ) / shadowMapSize;\n\t\t\tfloat dx0 = - texelSize.x * shadowRadius;\n\t\t\tfloat dy0 = - texelSize.y * shadowRadius;\n\t\t\tfloat dx1 = + texelSize.x * shadowRadius;\n\t\t\tfloat dy1 = + texelSize.y * shadowRadius;\n\t\t\tfloat dx2 = dx0 / 2.0;\n\t\t\tfloat dy2 = dy0 / 2.0;\n\t\t\tfloat dx3 = dx1 / 2.0;\n\t\t\tfloat dy3 = dy1 / 2.0;\n\t\t\tshadow = (\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, dy2 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy2 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, dy2 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy, shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, dy3 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy3 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, dy3 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, dy1 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy1 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, dy1 ), shadowCoord.z )\n\t\t\t) * ( 1.0 / 17.0 );\n\t\t#elif defined( SHADOWMAP_TYPE_PCF_SOFT )\n\t\t\tvec2 texelSize = vec2( 1.0 ) / shadowMapSize;\n\t\t\tfloat dx = texelSize.x;\n\t\t\tfloat dy = texelSize.y;\n\t\t\tvec2 uv = shadowCoord.xy;\n\t\t\tvec2 f = fract( uv * shadowMapSize + 0.5 );\n\t\t\tuv -= f * texelSize;\n\t\t\tshadow = (\n\t\t\t\ttexture2DCompare( shadowMap, uv, shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, uv + vec2( dx, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, uv + vec2( 0.0, dy ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, uv + texelSize, shadowCoord.z ) +\n\t\t\t\tmix( texture2DCompare( shadowMap, uv + vec2( -dx, 0.0 ), shadowCoord.z ), \n\t\t\t\t\t texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, 0.0 ), shadowCoord.z ),\n\t\t\t\t\t f.x ) +\n\t\t\t\tmix( texture2DCompare( shadowMap, uv + vec2( -dx, dy ), shadowCoord.z ), \n\t\t\t\t\t texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, dy ), shadowCoord.z ),\n\t\t\t\t\t f.x ) +\n\t\t\t\tmix( texture2DCompare( shadowMap, uv + vec2( 0.0, -dy ), shadowCoord.z ), \n\t\t\t\t\t texture2DCompare( shadowMap, uv + vec2( 0.0, 2.0 * dy ), shadowCoord.z ),\n\t\t\t\t\t f.y ) +\n\t\t\t\tmix( texture2DCompare( shadowMap, uv + vec2( dx, -dy ), shadowCoord.z ), \n\t\t\t\t\t texture2DCompare( shadowMap, uv + vec2( dx, 2.0 * dy ), shadowCoord.z ),\n\t\t\t\t\t f.y ) +\n\t\t\t\tmix( mix( texture2DCompare( shadowMap, uv + vec2( -dx, -dy ), shadowCoord.z ), \n\t\t\t\t\t\t	texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, -dy ), shadowCoord.z ),\n\t\t\t\t\t\t	f.x ),\n\t\t\t\t\t mix( texture2DCompare( shadowMap, uv + vec2( -dx, 2.0 * dy ), shadowCoord.z ), \n\t\t\t\t\t\t	texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, 2.0 * dy ), shadowCoord.z ),\n\t\t\t\t\t\t	f.x ),\n\t\t\t\t\t f.y )\n\t\t\t) * ( 1.0 / 9.0 );\n\t\t#elif defined( SHADOWMAP_TYPE_VSM )\n\t\t\tshadow = VSMShadow( shadowMap, shadowCoord.xy, shadowCoord.z );\n\t\t#else\n\t\t\tshadow = texture2DCompare( shadowMap, shadowCoord.xy, shadowCoord.z );\n\t\t#endif\n\t\t}\n\t\treturn shadow;\n\t}\n\tvec2 cubeToUV( vec3 v, float texelSizeY ) {\n\t\tvec3 absV = abs( v );\n\t\tfloat scaleToCube = 1.0 / max( absV.x, max( absV.y, absV.z ) );\n\t\tabsV *= scaleToCube;\n\t\tv *= scaleToCube * ( 1.0 - 2.0 * texelSizeY );\n\t\tvec2 planar = v.xy;\n\t\tfloat almostATexel = 1.5 * texelSizeY;\n\t\tfloat almostOne = 1.0 - almostATexel;\n\t\tif ( absV.z >= almostOne ) {\n\t\t\tif ( v.z > 0.0 )\n\t\t\t\tplanar.x = 4.0 - v.x;\n\t\t} else if ( absV.x >= almostOne ) {\n\t\t\tfloat signX = sign( v.x );\n\t\t\tplanar.x = v.z * signX + 2.0 * signX;\n\t\t} else if ( absV.y >= almostOne ) {\n\t\t\tfloat signY = sign( v.y );\n\t\t\tplanar.x = v.x + 2.0 * signY + 2.0;\n\t\t\tplanar.y = v.z * signY - 2.0;\n\t\t}\n\t\treturn vec2( 0.125, 0.25 ) * planar + vec2( 0.375, 0.75 );\n\t}\n\tfloat getPointShadow( sampler2D shadowMap, vec2 shadowMapSize, float shadowBias, float shadowRadius, vec4 shadowCoord, float shadowCameraNear, float shadowCameraFar ) {\n\t\tvec2 texelSize = vec2( 1.0 ) / ( shadowMapSize * vec2( 4.0, 2.0 ) );\n\t\tvec3 lightToPosition = shadowCoord.xyz;\n\t\tfloat dp = ( length( lightToPosition ) - shadowCameraNear ) / ( shadowCameraFar - shadowCameraNear );\t\tdp += shadowBias;\n\t\tvec3 bd3D = normalize( lightToPosition );\n\t\t#if defined( SHADOWMAP_TYPE_PCF ) || defined( SHADOWMAP_TYPE_PCF_SOFT ) || defined( SHADOWMAP_TYPE_VSM )\n\t\t\tvec2 offset = vec2( - 1, 1 ) * shadowRadius * texelSize.y;\n\t\t\treturn (\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xyy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yyy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xyx, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yyx, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xxy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yxy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xxx, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yxx, texelSize.y ), dp )\n\t\t\t) * ( 1.0 / 9.0 );\n\t\t#else\n\t\t\treturn texture2DCompare( shadowMap, cubeToUV( bd3D, texelSize.y ), dp );\n\t\t#endif\n\t}\n#endif";

	var shadowmap_pars_vertex = "#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHT_SHADOWS > 0\n\t\tuniform mat4 directionalShadowMatrix[ NUM_DIR_LIGHT_SHADOWS ];\n\t\tvarying vec4 vDirectionalShadowCoord[ NUM_DIR_LIGHT_SHADOWS ];\n\t\tstruct DirectionalLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t};\n\t\tuniform DirectionalLightShadow directionalLightShadows[ NUM_DIR_LIGHT_SHADOWS ];\n\t#endif\n\t#if NUM_SPOT_LIGHT_SHADOWS > 0\n\t\tuniform mat4 spotShadowMatrix[ NUM_SPOT_LIGHT_SHADOWS ];\n\t\tvarying vec4 vSpotShadowCoord[ NUM_SPOT_LIGHT_SHADOWS ];\n\t\tstruct SpotLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t};\n\t\tuniform SpotLightShadow spotLightShadows[ NUM_SPOT_LIGHT_SHADOWS ];\n\t#endif\n\t#if NUM_POINT_LIGHT_SHADOWS > 0\n\t\tuniform mat4 pointShadowMatrix[ NUM_POINT_LIGHT_SHADOWS ];\n\t\tvarying vec4 vPointShadowCoord[ NUM_POINT_LIGHT_SHADOWS ];\n\t\tstruct PointLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t\tfloat shadowCameraNear;\n\t\t\tfloat shadowCameraFar;\n\t\t};\n\t\tuniform PointLightShadow pointLightShadows[ NUM_POINT_LIGHT_SHADOWS ];\n\t#endif\n#endif";

	var shadowmap_vertex = "#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHT_SHADOWS > 0 || NUM_SPOT_LIGHT_SHADOWS > 0 || NUM_POINT_LIGHT_SHADOWS > 0\n\t\tvec3 shadowWorldNormal = inverseTransformDirection( transformedNormal, viewMatrix );\n\t\tvec4 shadowWorldPosition;\n\t#endif\n\t#if NUM_DIR_LIGHT_SHADOWS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_DIR_LIGHT_SHADOWS; i ++ ) {\n\t\tshadowWorldPosition = worldPosition + vec4( shadowWorldNormal * directionalLightShadows[ i ].shadowNormalBias, 0 );\n\t\tvDirectionalShadowCoord[ i ] = directionalShadowMatrix[ i ] * shadowWorldPosition;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#if NUM_SPOT_LIGHT_SHADOWS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_SPOT_LIGHT_SHADOWS; i ++ ) {\n\t\tshadowWorldPosition = worldPosition + vec4( shadowWorldNormal * spotLightShadows[ i ].shadowNormalBias, 0 );\n\t\tvSpotShadowCoord[ i ] = spotShadowMatrix[ i ] * shadowWorldPosition;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#if NUM_POINT_LIGHT_SHADOWS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_POINT_LIGHT_SHADOWS; i ++ ) {\n\t\tshadowWorldPosition = worldPosition + vec4( shadowWorldNormal * pointLightShadows[ i ].shadowNormalBias, 0 );\n\t\tvPointShadowCoord[ i ] = pointShadowMatrix[ i ] * shadowWorldPosition;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n#endif";

	var shadowmask_pars_fragment = "float getShadowMask() {\n\tfloat shadow = 1.0;\n\t#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHT_SHADOWS > 0\n\tDirectionalLightShadow directionalLight;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_DIR_LIGHT_SHADOWS; i ++ ) {\n\t\tdirectionalLight = directionalLightShadows[ i ];\n\t\tshadow *= receiveShadow ? getShadow( directionalShadowMap[ i ], directionalLight.shadowMapSize, directionalLight.shadowBias, directionalLight.shadowRadius, vDirectionalShadowCoord[ i ] ) : 1.0;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#if NUM_SPOT_LIGHT_SHADOWS > 0\n\tSpotLightShadow spotLight;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_SPOT_LIGHT_SHADOWS; i ++ ) {\n\t\tspotLight = spotLightShadows[ i ];\n\t\tshadow *= receiveShadow ? getShadow( spotShadowMap[ i ], spotLight.shadowMapSize, spotLight.shadowBias, spotLight.shadowRadius, vSpotShadowCoord[ i ] ) : 1.0;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#if NUM_POINT_LIGHT_SHADOWS > 0\n\tPointLightShadow pointLight;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_POINT_LIGHT_SHADOWS; i ++ ) {\n\t\tpointLight = pointLightShadows[ i ];\n\t\tshadow *= receiveShadow ? getPointShadow( pointShadowMap[ i ], pointLight.shadowMapSize, pointLight.shadowBias, pointLight.shadowRadius, vPointShadowCoord[ i ], pointLight.shadowCameraNear, pointLight.shadowCameraFar ) : 1.0;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#endif\n\treturn shadow;\n}";

	var skinbase_vertex = "#ifdef USE_SKINNING\n\tmat4 boneMatX = getBoneMatrix( skinIndex.x );\n\tmat4 boneMatY = getBoneMatrix( skinIndex.y );\n\tmat4 boneMatZ = getBoneMatrix( skinIndex.z );\n\tmat4 boneMatW = getBoneMatrix( skinIndex.w );\n#endif";

	var skinning_pars_vertex = "#ifdef USE_SKINNING\n\tuniform mat4 bindMatrix;\n\tuniform mat4 bindMatrixInverse;\n\t#ifdef BONE_TEXTURE\n\t\tuniform highp sampler2D boneTexture;\n\t\tuniform int boneTextureSize;\n\t\tmat4 getBoneMatrix( const in float i ) {\n\t\t\tfloat j = i * 4.0;\n\t\t\tfloat x = mod( j, float( boneTextureSize ) );\n\t\t\tfloat y = floor( j / float( boneTextureSize ) );\n\t\t\tfloat dx = 1.0 / float( boneTextureSize );\n\t\t\tfloat dy = 1.0 / float( boneTextureSize );\n\t\t\ty = dy * ( y + 0.5 );\n\t\t\tvec4 v1 = texture2D( boneTexture, vec2( dx * ( x + 0.5 ), y ) );\n\t\t\tvec4 v2 = texture2D( boneTexture, vec2( dx * ( x + 1.5 ), y ) );\n\t\t\tvec4 v3 = texture2D( boneTexture, vec2( dx * ( x + 2.5 ), y ) );\n\t\t\tvec4 v4 = texture2D( boneTexture, vec2( dx * ( x + 3.5 ), y ) );\n\t\t\tmat4 bone = mat4( v1, v2, v3, v4 );\n\t\t\treturn bone;\n\t\t}\n\t#else\n\t\tuniform mat4 boneMatrices[ MAX_BONES ];\n\t\tmat4 getBoneMatrix( const in float i ) {\n\t\t\tmat4 bone = boneMatrices[ int(i) ];\n\t\t\treturn bone;\n\t\t}\n\t#endif\n#endif";

	var skinning_vertex = "#ifdef USE_SKINNING\n\tvec4 skinVertex = bindMatrix * vec4( transformed, 1.0 );\n\tvec4 skinned = vec4( 0.0 );\n\tskinned += boneMatX * skinVertex * skinWeight.x;\n\tskinned += boneMatY * skinVertex * skinWeight.y;\n\tskinned += boneMatZ * skinVertex * skinWeight.z;\n\tskinned += boneMatW * skinVertex * skinWeight.w;\n\ttransformed = ( bindMatrixInverse * skinned ).xyz;\n#endif";

	var skinnormal_vertex = "#ifdef USE_SKINNING\n\tmat4 skinMatrix = mat4( 0.0 );\n\tskinMatrix += skinWeight.x * boneMatX;\n\tskinMatrix += skinWeight.y * boneMatY;\n\tskinMatrix += skinWeight.z * boneMatZ;\n\tskinMatrix += skinWeight.w * boneMatW;\n\tskinMatrix = bindMatrixInverse * skinMatrix * bindMatrix;\n\tobjectNormal = vec4( skinMatrix * vec4( objectNormal, 0.0 ) ).xyz;\n\t#ifdef USE_TANGENT\n\t\tobjectTangent = vec4( skinMatrix * vec4( objectTangent, 0.0 ) ).xyz;\n\t#endif\n#endif";

	var specularmap_fragment = "float specularStrength;\n#ifdef USE_SPECULARMAP\n\tvec4 texelSpecular = texture2D( specularMap, vUv );\n\tspecularStrength = texelSpecular.r;\n#else\n\tspecularStrength = 1.0;\n#endif";

	var specularmap_pars_fragment = "#ifdef USE_SPECULARMAP\n\tuniform sampler2D specularMap;\n#endif";

	var tonemapping_fragment = "#if defined( TONE_MAPPING )\n\tgl_FragColor.rgb = toneMapping( gl_FragColor.rgb );\n#endif";

	var tonemapping_pars_fragment = "#ifndef saturate\n#define saturate( a ) clamp( a, 0.0, 1.0 )\n#endif\nuniform float toneMappingExposure;\nvec3 LinearToneMapping( vec3 color ) {\n\treturn toneMappingExposure * color;\n}\nvec3 ReinhardToneMapping( vec3 color ) {\n\tcolor *= toneMappingExposure;\n\treturn saturate( color / ( vec3( 1.0 ) + color ) );\n}\nvec3 OptimizedCineonToneMapping( vec3 color ) {\n\tcolor *= toneMappingExposure;\n\tcolor = max( vec3( 0.0 ), color - 0.004 );\n\treturn pow( ( color * ( 6.2 * color + 0.5 ) ) / ( color * ( 6.2 * color + 1.7 ) + 0.06 ), vec3( 2.2 ) );\n}\nvec3 RRTAndODTFit( vec3 v ) {\n\tvec3 a = v * ( v + 0.0245786 ) - 0.000090537;\n\tvec3 b = v * ( 0.983729 * v + 0.4329510 ) + 0.238081;\n\treturn a / b;\n}\nvec3 ACESFilmicToneMapping( vec3 color ) {\n\tconst mat3 ACESInputMat = mat3(\n\t\tvec3( 0.59719, 0.07600, 0.02840 ),\t\tvec3( 0.35458, 0.90834, 0.13383 ),\n\t\tvec3( 0.04823, 0.01566, 0.83777 )\n\t);\n\tconst mat3 ACESOutputMat = mat3(\n\t\tvec3(	1.60475, -0.10208, -0.00327 ),\t\tvec3( -0.53108,	1.10813, -0.07276 ),\n\t\tvec3( -0.07367, -0.00605,	1.07602 )\n\t);\n\tcolor *= toneMappingExposure / 0.6;\n\tcolor = ACESInputMat * color;\n\tcolor = RRTAndODTFit( color );\n\tcolor = ACESOutputMat * color;\n\treturn saturate( color );\n}\nvec3 CustomToneMapping( vec3 color ) { return color; }";

	var transmission_fragment = "#ifdef USE_TRANSMISSION\n\tfloat transmissionAlpha = 1.0;\n\tfloat transmissionFactor = transmission;\n\tfloat thicknessFactor = thickness;\n\t#ifdef USE_TRANSMISSIONMAP\n\t\ttransmissionFactor *= texture2D( transmissionMap, vUv ).r;\n\t#endif\n\t#ifdef USE_THICKNESSMAP\n\t\tthicknessFactor *= texture2D( thicknessMap, vUv ).g;\n\t#endif\n\tvec3 pos = vWorldPosition;\n\tvec3 v = normalize( cameraPosition - pos );\n\tvec3 n = inverseTransformDirection( normal, viewMatrix );\n\tvec4 transmission = getIBLVolumeRefraction(\n\t\tn, v, roughnessFactor, material.diffuseColor, material.specularColor, material.specularF90,\n\t\tpos, modelMatrix, viewMatrix, projectionMatrix, ior, thicknessFactor,\n\t\tattenuationTint, attenuationDistance );\n\ttotalDiffuse = mix( totalDiffuse, transmission.rgb, transmissionFactor );\n\ttransmissionAlpha = mix( transmissionAlpha, transmission.a, transmissionFactor );\n#endif";

	var transmission_pars_fragment = "#ifdef USE_TRANSMISSION\n\tuniform float transmission;\n\tuniform float thickness;\n\tuniform float attenuationDistance;\n\tuniform vec3 attenuationTint;\n\t#ifdef USE_TRANSMISSIONMAP\n\t\tuniform sampler2D transmissionMap;\n\t#endif\n\t#ifdef USE_THICKNESSMAP\n\t\tuniform sampler2D thicknessMap;\n\t#endif\n\tuniform vec2 transmissionSamplerSize;\n\tuniform sampler2D transmissionSamplerMap;\n\tuniform mat4 modelMatrix;\n\tuniform mat4 projectionMatrix;\n\tvarying vec3 vWorldPosition;\n\tvec3 getVolumeTransmissionRay( vec3 n, vec3 v, float thickness, float ior, mat4 modelMatrix ) {\n\t\tvec3 refractionVector = refract( - v, normalize( n ), 1.0 / ior );\n\t\tvec3 modelScale;\n\t\tmodelScale.x = length( vec3( modelMatrix[ 0 ].xyz ) );\n\t\tmodelScale.y = length( vec3( modelMatrix[ 1 ].xyz ) );\n\t\tmodelScale.z = length( vec3( modelMatrix[ 2 ].xyz ) );\n\t\treturn normalize( refractionVector ) * thickness * modelScale;\n\t}\n\tfloat applyIorToRoughness( float roughness, float ior ) {\n\t\treturn roughness * clamp( ior * 2.0 - 2.0, 0.0, 1.0 );\n\t}\n\tvec4 getTransmissionSample( vec2 fragCoord, float roughness, float ior ) {\n\t\tfloat framebufferLod = log2( transmissionSamplerSize.x ) * applyIorToRoughness( roughness, ior );\n\t\t#ifdef TEXTURE_LOD_EXT\n\t\t\treturn texture2DLodEXT( transmissionSamplerMap, fragCoord.xy, framebufferLod );\n\t\t#else\n\t\t\treturn texture2D( transmissionSamplerMap, fragCoord.xy, framebufferLod );\n\t\t#endif\n\t}\n\tvec3 applyVolumeAttenuation( vec3 radiance, float transmissionDistance, vec3 attenuationColor, float attenuationDistance ) {\n\t\tif ( attenuationDistance == 0.0 ) {\n\t\t\treturn radiance;\n\t\t} else {\n\t\t\tvec3 attenuationCoefficient = -log( attenuationColor ) / attenuationDistance;\n\t\t\tvec3 transmittance = exp( - attenuationCoefficient * transmissionDistance );\t\t\treturn transmittance * radiance;\n\t\t}\n\t}\n\tvec4 getIBLVolumeRefraction( vec3 n, vec3 v, float roughness, vec3 diffuseColor, vec3 specularColor, float specularF90,\n\t\tvec3 position, mat4 modelMatrix, mat4 viewMatrix, mat4 projMatrix, float ior, float thickness,\n\t\tvec3 attenuationColor, float attenuationDistance ) {\n\t\tvec3 transmissionRay = getVolumeTransmissionRay( n, v, thickness, ior, modelMatrix );\n\t\tvec3 refractedRayExit = position + transmissionRay;\n\t\tvec4 ndcPos = projMatrix * viewMatrix * vec4( refractedRayExit, 1.0 );\n\t\tvec2 refractionCoords = ndcPos.xy / ndcPos.w;\n\t\trefractionCoords += 1.0;\n\t\trefractionCoords /= 2.0;\n\t\tvec4 transmittedLight = getTransmissionSample( refractionCoords, roughness, ior );\n\t\tvec3 attenuatedColor = applyVolumeAttenuation( transmittedLight.rgb, length( transmissionRay ), attenuationColor, attenuationDistance );\n\t\tvec3 F = EnvironmentBRDF( n, v, specularColor, specularF90, roughness );\n\t\treturn vec4( ( 1.0 - F ) * attenuatedColor * diffuseColor, transmittedLight.a );\n\t}\n#endif";

	var uv_pars_fragment = "#if ( defined( USE_UV ) && ! defined( UVS_VERTEX_ONLY ) )\n\tvarying vec2 vUv;\n#endif";

	var uv_pars_vertex = "#ifdef USE_UV\n\t#ifdef UVS_VERTEX_ONLY\n\t\tvec2 vUv;\n\t#else\n\t\tvarying vec2 vUv;\n\t#endif\n\tuniform mat3 uvTransform;\n#endif";

	var uv_vertex = "#ifdef USE_UV\n\tvUv = ( uvTransform * vec3( uv, 1 ) ).xy;\n#endif";

	var uv2_pars_fragment = "#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\n\tvarying vec2 vUv2;\n#endif";

	var uv2_pars_vertex = "#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\n\tattribute vec2 uv2;\n\tvarying vec2 vUv2;\n\tuniform mat3 uv2Transform;\n#endif";

	var uv2_vertex = "#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\n\tvUv2 = ( uv2Transform * vec3( uv2, 1 ) ).xy;\n#endif";

	var worldpos_vertex = "#if defined( USE_ENVMAP ) || defined( DISTANCE ) || defined ( USE_SHADOWMAP ) || defined ( USE_TRANSMISSION )\n\tvec4 worldPosition = vec4( transformed, 1.0 );\n\t#ifdef USE_INSTANCING\n\t\tworldPosition = instanceMatrix * worldPosition;\n\t#endif\n\tworldPosition = modelMatrix * worldPosition;\n#endif";

	const vertex$g = "varying vec2 vUv;\nuniform mat3 uvTransform;\nvoid main() {\n\tvUv = ( uvTransform * vec3( uv, 1 ) ).xy;\n\tgl_Position = vec4( position.xy, 1.0, 1.0 );\n}";
	const fragment$g = "uniform sampler2D t2D;\nvarying vec2 vUv;\nvoid main() {\n\tvec4 texColor = texture2D( t2D, vUv );\n\tgl_FragColor = mapTexelToLinear( texColor );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n}";

	const vertex$f = "varying vec3 vWorldDirection;\n#include <common>\nvoid main() {\n\tvWorldDirection = transformDirection( position, modelMatrix );\n\t#include <begin_vertex>\n\t#include <project_vertex>\n\tgl_Position.z = gl_Position.w;\n}";
	const fragment$f = "#include <envmap_common_pars_fragment>\nuniform float opacity;\nvarying vec3 vWorldDirection;\n#include <cube_uv_reflection_fragment>\nvoid main() {\n\tvec3 vReflect = vWorldDirection;\n\t#include <envmap_fragment>\n\tgl_FragColor = envColor;\n\tgl_FragColor.a *= opacity;\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n}";

	const vertex$e = "#include <common>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvarying vec2 vHighPrecisionZW;\nvoid main() {\n\t#include <uv_vertex>\n\t#include <skinbase_vertex>\n\t#ifdef USE_DISPLACEMENTMAP\n\t\t#include <beginnormal_vertex>\n\t\t#include <morphnormal_vertex>\n\t\t#include <skinnormal_vertex>\n\t#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvHighPrecisionZW = gl_Position.zw;\n}";
	const fragment$e = "#if DEPTH_PACKING == 3200\n\tuniform float opacity;\n#endif\n#include <common>\n#include <packing>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvarying vec2 vHighPrecisionZW;\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( 1.0 );\n\t#if DEPTH_PACKING == 3200\n\t\tdiffuseColor.a = opacity;\n\t#endif\n\t#include <map_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <logdepthbuf_fragment>\n\tfloat fragCoordZ = 0.5 * vHighPrecisionZW[0] / vHighPrecisionZW[1] + 0.5;\n\t#if DEPTH_PACKING == 3200\n\t\tgl_FragColor = vec4( vec3( 1.0 - fragCoordZ ), opacity );\n\t#elif DEPTH_PACKING == 3201\n\t\tgl_FragColor = packDepthToRGBA( fragCoordZ );\n\t#endif\n}";

	const vertex$d = "#define DISTANCE\nvarying vec3 vWorldPosition;\n#include <common>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <skinbase_vertex>\n\t#ifdef USE_DISPLACEMENTMAP\n\t\t#include <beginnormal_vertex>\n\t\t#include <morphnormal_vertex>\n\t\t#include <skinnormal_vertex>\n\t#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <worldpos_vertex>\n\t#include <clipping_planes_vertex>\n\tvWorldPosition = worldPosition.xyz;\n}";
	const fragment$d = "#define DISTANCE\nuniform vec3 referencePosition;\nuniform float nearDistance;\nuniform float farDistance;\nvarying vec3 vWorldPosition;\n#include <common>\n#include <packing>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main () {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( 1.0 );\n\t#include <map_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\tfloat dist = length( vWorldPosition - referencePosition );\n\tdist = ( dist - nearDistance ) / ( farDistance - nearDistance );\n\tdist = saturate( dist );\n\tgl_FragColor = packDepthToRGBA( dist );\n}";

	const vertex$c = "varying vec3 vWorldDirection;\n#include <common>\nvoid main() {\n\tvWorldDirection = transformDirection( position, modelMatrix );\n\t#include <begin_vertex>\n\t#include <project_vertex>\n}";
	const fragment$c = "uniform sampler2D tEquirect;\nvarying vec3 vWorldDirection;\n#include <common>\nvoid main() {\n\tvec3 direction = normalize( vWorldDirection );\n\tvec2 sampleUV = equirectUv( direction );\n\tvec4 texColor = texture2D( tEquirect, sampleUV );\n\tgl_FragColor = mapTexelToLinear( texColor );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n}";

	const vertex$b = "uniform float scale;\nattribute float lineDistance;\nvarying float vLineDistance;\n#include <common>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\tvLineDistance = scale * lineDistance;\n\t#include <color_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <fog_vertex>\n}";
	const fragment$b = "uniform vec3 diffuse;\nuniform float opacity;\nuniform float dashSize;\nuniform float totalSize;\nvarying float vLineDistance;\n#include <common>\n#include <color_pars_fragment>\n#include <fog_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tif ( mod( vLineDistance, totalSize ) > dashSize ) {\n\t\tdiscard;\n\t}\n\tvec3 outgoingLight = vec3( 0.0 );\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <color_fragment>\n\toutgoingLight = diffuseColor.rgb;\n\t#include <output_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n}";

	const vertex$a = "#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <envmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#if defined ( USE_ENVMAP ) || defined ( USE_SKINNING )\n\t\t#include <beginnormal_vertex>\n\t\t#include <morphnormal_vertex>\n\t\t#include <skinbase_vertex>\n\t\t#include <skinnormal_vertex>\n\t\t#include <defaultnormal_vertex>\n\t#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <worldpos_vertex>\n\t#include <envmap_vertex>\n\t#include <fog_vertex>\n}";
	const fragment$a = "uniform vec3 diffuse;\nuniform float opacity;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <common>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_pars_fragment>\n#include <cube_uv_reflection_fragment>\n#include <fog_pars_fragment>\n#include <specularmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <specularmap_fragment>\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\t#ifdef USE_LIGHTMAP\n\t\tvec4 lightMapTexel= texture2D( lightMap, vUv2 );\n\t\treflectedLight.indirectDiffuse += lightMapTexelToLinear( lightMapTexel ).rgb * lightMapIntensity;\n\t#else\n\t\treflectedLight.indirectDiffuse += vec3( 1.0 );\n\t#endif\n\t#include <aomap_fragment>\n\treflectedLight.indirectDiffuse *= diffuseColor.rgb;\n\tvec3 outgoingLight = reflectedLight.indirectDiffuse;\n\t#include <envmap_fragment>\n\t#include <output_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";

	const vertex$9 = "#define LAMBERT\nvarying vec3 vLightFront;\nvarying vec3 vIndirectFront;\n#ifdef DOUBLE_SIDED\n\tvarying vec3 vLightBack;\n\tvarying vec3 vIndirectBack;\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <envmap_pars_vertex>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <worldpos_vertex>\n\t#include <envmap_vertex>\n\t#include <lights_lambert_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}";
	const fragment$9 = "uniform vec3 diffuse;\nuniform vec3 emissive;\nuniform float opacity;\nvarying vec3 vLightFront;\nvarying vec3 vIndirectFront;\n#ifdef DOUBLE_SIDED\n\tvarying vec3 vLightBack;\n\tvarying vec3 vIndirectBack;\n#endif\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_pars_fragment>\n#include <cube_uv_reflection_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <fog_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <shadowmask_pars_fragment>\n#include <specularmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <specularmap_fragment>\n\t#include <emissivemap_fragment>\n\t#ifdef DOUBLE_SIDED\n\t\treflectedLight.indirectDiffuse += ( gl_FrontFacing ) ? vIndirectFront : vIndirectBack;\n\t#else\n\t\treflectedLight.indirectDiffuse += vIndirectFront;\n\t#endif\n\t#include <lightmap_fragment>\n\treflectedLight.indirectDiffuse *= BRDF_Lambert( diffuseColor.rgb );\n\t#ifdef DOUBLE_SIDED\n\t\treflectedLight.directDiffuse = ( gl_FrontFacing ) ? vLightFront : vLightBack;\n\t#else\n\t\treflectedLight.directDiffuse = vLightFront;\n\t#endif\n\treflectedLight.directDiffuse *= BRDF_Lambert( diffuseColor.rgb ) * getShadowMask();\n\t#include <aomap_fragment>\n\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + totalEmissiveRadiance;\n\t#include <envmap_fragment>\n\t#include <output_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";

	const vertex$8 = "#define MATCAP\nvarying vec3 vViewPosition;\n#include <common>\n#include <uv_pars_vertex>\n#include <color_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <fog_pars_vertex>\n#include <normal_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <color_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <normal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <fog_vertex>\n\tvViewPosition = - mvPosition.xyz;\n}";
	const fragment$8 = "#define MATCAP\nuniform vec3 diffuse;\nuniform float opacity;\nuniform sampler2D matcap;\nvarying vec3 vViewPosition;\n#include <common>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <fog_pars_fragment>\n#include <normal_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\tvec3 viewDir = normalize( vViewPosition );\n\tvec3 x = normalize( vec3( viewDir.z, 0.0, - viewDir.x ) );\n\tvec3 y = cross( viewDir, x );\n\tvec2 uv = vec2( dot( x, normal ), dot( y, normal ) ) * 0.495 + 0.5;\n\t#ifdef USE_MATCAP\n\t\tvec4 matcapColor = texture2D( matcap, uv );\n\t\tmatcapColor = matcapTexelToLinear( matcapColor );\n\t#else\n\t\tvec4 matcapColor = vec4( 1.0 );\n\t#endif\n\tvec3 outgoingLight = diffuseColor.rgb * matcapColor.rgb;\n\t#include <output_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";

	const vertex$7 = "#define NORMAL\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( TANGENTSPACE_NORMALMAP )\n\tvarying vec3 vViewPosition;\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <normal_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <normal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( TANGENTSPACE_NORMALMAP )\n\tvViewPosition = - mvPosition.xyz;\n#endif\n}";
	const fragment$7 = "#define NORMAL\nuniform float opacity;\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( TANGENTSPACE_NORMALMAP )\n\tvarying vec3 vViewPosition;\n#endif\n#include <packing>\n#include <uv_pars_fragment>\n#include <normal_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\t#include <logdepthbuf_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\tgl_FragColor = vec4( packNormalToRGB( normal ), opacity );\n}";

	const vertex$6 = "#define PHONG\nvarying vec3 vViewPosition;\n#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <envmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <normal_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <normal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvViewPosition = - mvPosition.xyz;\n\t#include <worldpos_vertex>\n\t#include <envmap_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}";
	const fragment$6 = "#define PHONG\nuniform vec3 diffuse;\nuniform vec3 emissive;\nuniform vec3 specular;\nuniform float shininess;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_pars_fragment>\n#include <cube_uv_reflection_fragment>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <normal_pars_fragment>\n#include <lights_phong_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <specularmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <specularmap_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\t#include <emissivemap_fragment>\n\t#include <lights_phong_fragment>\n\t#include <lights_fragment_begin>\n\t#include <lights_fragment_maps>\n\t#include <lights_fragment_end>\n\t#include <aomap_fragment>\n\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + reflectedLight.directSpecular + reflectedLight.indirectSpecular + totalEmissiveRadiance;\n\t#include <envmap_fragment>\n\t#include <output_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";

	const vertex$5 = "#define STANDARD\nvarying vec3 vViewPosition;\n#ifdef USE_TRANSMISSION\n\tvarying vec3 vWorldPosition;\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <normal_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <normal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvViewPosition = - mvPosition.xyz;\n\t#include <worldpos_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n#ifdef USE_TRANSMISSION\n\tvWorldPosition = worldPosition.xyz;\n#endif\n}";
	const fragment$5 = "#define STANDARD\n#ifdef PHYSICAL\n\t#define IOR\n\t#define SPECULAR\n#endif\nuniform vec3 diffuse;\nuniform vec3 emissive;\nuniform float roughness;\nuniform float metalness;\nuniform float opacity;\n#ifdef IOR\n\tuniform float ior;\n#endif\n#ifdef SPECULAR\n\tuniform float specularIntensity;\n\tuniform vec3 specularTint;\n\t#ifdef USE_SPECULARINTENSITYMAP\n\t\tuniform sampler2D specularIntensityMap;\n\t#endif\n\t#ifdef USE_SPECULARTINTMAP\n\t\tuniform sampler2D specularTintMap;\n\t#endif\n#endif\n#ifdef USE_CLEARCOAT\n\tuniform float clearcoat;\n\tuniform float clearcoatRoughness;\n#endif\n#ifdef USE_SHEEN\n\tuniform vec3 sheenTint;\n\tuniform float sheenRoughness;\n#endif\nvarying vec3 vViewPosition;\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <bsdfs>\n#include <cube_uv_reflection_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_physical_pars_fragment>\n#include <fog_pars_fragment>\n#include <lights_pars_begin>\n#include <normal_pars_fragment>\n#include <lights_physical_pars_fragment>\n#include <transmission_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <clearcoat_pars_fragment>\n#include <roughnessmap_pars_fragment>\n#include <metalnessmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <roughnessmap_fragment>\n\t#include <metalnessmap_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\t#include <clearcoat_normal_fragment_begin>\n\t#include <clearcoat_normal_fragment_maps>\n\t#include <emissivemap_fragment>\n\t#include <lights_physical_fragment>\n\t#include <lights_fragment_begin>\n\t#include <lights_fragment_maps>\n\t#include <lights_fragment_end>\n\t#include <aomap_fragment>\n\tvec3 totalDiffuse = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse;\n\tvec3 totalSpecular = reflectedLight.directSpecular + reflectedLight.indirectSpecular;\n\t#include <transmission_fragment>\n\tvec3 outgoingLight = totalDiffuse + totalSpecular + totalEmissiveRadiance;\n\t#ifdef USE_CLEARCOAT\n\t\tfloat dotNVcc = saturate( dot( geometry.clearcoatNormal, geometry.viewDir ) );\n\t\tvec3 Fcc = F_Schlick( material.clearcoatF0, material.clearcoatF90, dotNVcc );\n\t\toutgoingLight = outgoingLight * ( 1.0 - clearcoat * Fcc ) + clearcoatSpecular * clearcoat;\n\t#endif\n\t#include <output_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";

	const vertex$4 = "#define TOON\nvarying vec3 vViewPosition;\n#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <normal_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <normal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvViewPosition = - mvPosition.xyz;\n\t#include <worldpos_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}";
	const fragment$4 = "#define TOON\nuniform vec3 diffuse;\nuniform vec3 emissive;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <gradientmap_pars_fragment>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <normal_pars_fragment>\n#include <lights_toon_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\t#include <emissivemap_fragment>\n\t#include <lights_toon_fragment>\n\t#include <lights_fragment_begin>\n\t#include <lights_fragment_maps>\n\t#include <lights_fragment_end>\n\t#include <aomap_fragment>\n\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + totalEmissiveRadiance;\n\t#include <output_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";

	const vertex$3 = "uniform float size;\nuniform float scale;\n#include <common>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <color_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <project_vertex>\n\tgl_PointSize = size;\n\t#ifdef USE_SIZEATTENUATION\n\t\tbool isPerspective = isPerspectiveMatrix( projectionMatrix );\n\t\tif ( isPerspective ) gl_PointSize *= ( scale / - mvPosition.z );\n\t#endif\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <worldpos_vertex>\n\t#include <fog_vertex>\n}";
	const fragment$3 = "uniform vec3 diffuse;\nuniform float opacity;\n#include <common>\n#include <color_pars_fragment>\n#include <map_particle_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <fog_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec3 outgoingLight = vec3( 0.0 );\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <map_particle_fragment>\n\t#include <color_fragment>\n\t#include <alphatest_fragment>\n\toutgoingLight = diffuseColor.rgb;\n\t#include <output_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n}";

	const vertex$2 = "#include <common>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\nvoid main() {\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <project_vertex>\n\t#include <worldpos_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}";
	const fragment$2 = "uniform vec3 color;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <shadowmap_pars_fragment>\n#include <shadowmask_pars_fragment>\nvoid main() {\n\tgl_FragColor = vec4( color, opacity * ( 1.0 - getShadowMask() ) );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n}";

	const vertex$1 = "uniform float rotation;\nuniform vec2 center;\n#include <common>\n#include <uv_pars_vertex>\n#include <fog_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\tvec4 mvPosition = modelViewMatrix * vec4( 0.0, 0.0, 0.0, 1.0 );\n\tvec2 scale;\n\tscale.x = length( vec3( modelMatrix[ 0 ].x, modelMatrix[ 0 ].y, modelMatrix[ 0 ].z ) );\n\tscale.y = length( vec3( modelMatrix[ 1 ].x, modelMatrix[ 1 ].y, modelMatrix[ 1 ].z ) );\n\t#ifndef USE_SIZEATTENUATION\n\t\tbool isPerspective = isPerspectiveMatrix( projectionMatrix );\n\t\tif ( isPerspective ) scale *= - mvPosition.z;\n\t#endif\n\tvec2 alignedPosition = ( position.xy - ( center - vec2( 0.5 ) ) ) * scale;\n\tvec2 rotatedPosition;\n\trotatedPosition.x = cos( rotation ) * alignedPosition.x - sin( rotation ) * alignedPosition.y;\n\trotatedPosition.y = sin( rotation ) * alignedPosition.x + cos( rotation ) * alignedPosition.y;\n\tmvPosition.xy += rotatedPosition;\n\tgl_Position = projectionMatrix * mvPosition;\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <fog_vertex>\n}";
	const fragment$1 = "uniform vec3 diffuse;\nuniform float opacity;\n#include <common>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <fog_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec3 outgoingLight = vec3( 0.0 );\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\toutgoingLight = diffuseColor.rgb;\n\t#include <output_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n}";

	const ShaderChunk = {
		alphamap_fragment: alphamap_fragment,
		alphamap_pars_fragment: alphamap_pars_fragment,
		alphatest_fragment: alphatest_fragment,
		alphatest_pars_fragment: alphatest_pars_fragment,
		aomap_fragment: aomap_fragment,
		aomap_pars_fragment: aomap_pars_fragment,
		begin_vertex: begin_vertex,
		beginnormal_vertex: beginnormal_vertex,
		bsdfs: bsdfs,
		bumpmap_pars_fragment: bumpmap_pars_fragment,
		clipping_planes_fragment: clipping_planes_fragment,
		clipping_planes_pars_fragment: clipping_planes_pars_fragment,
		clipping_planes_pars_vertex: clipping_planes_pars_vertex,
		clipping_planes_vertex: clipping_planes_vertex,
		color_fragment: color_fragment,
		color_pars_fragment: color_pars_fragment,
		color_pars_vertex: color_pars_vertex,
		color_vertex: color_vertex,
		common: common,
		cube_uv_reflection_fragment: cube_uv_reflection_fragment,
		defaultnormal_vertex: defaultnormal_vertex,
		displacementmap_pars_vertex: displacementmap_pars_vertex,
		displacementmap_vertex: displacementmap_vertex,
		emissivemap_fragment: emissivemap_fragment,
		emissivemap_pars_fragment: emissivemap_pars_fragment,
		encodings_fragment: encodings_fragment,
		encodings_pars_fragment: encodings_pars_fragment,
		envmap_fragment: envmap_fragment,
		envmap_common_pars_fragment: envmap_common_pars_fragment,
		envmap_pars_fragment: envmap_pars_fragment,
		envmap_pars_vertex: envmap_pars_vertex,
		envmap_physical_pars_fragment: envmap_physical_pars_fragment,
		envmap_vertex: envmap_vertex,
		fog_vertex: fog_vertex,
		fog_pars_vertex: fog_pars_vertex,
		fog_fragment: fog_fragment,
		fog_pars_fragment: fog_pars_fragment,
		gradientmap_pars_fragment: gradientmap_pars_fragment,
		lightmap_fragment: lightmap_fragment,
		lightmap_pars_fragment: lightmap_pars_fragment,
		lights_lambert_vertex: lights_lambert_vertex,
		lights_pars_begin: lights_pars_begin,
		lights_toon_fragment: lights_toon_fragment,
		lights_toon_pars_fragment: lights_toon_pars_fragment,
		lights_phong_fragment: lights_phong_fragment,
		lights_phong_pars_fragment: lights_phong_pars_fragment,
		lights_physical_fragment: lights_physical_fragment,
		lights_physical_pars_fragment: lights_physical_pars_fragment,
		lights_fragment_begin: lights_fragment_begin,
		lights_fragment_maps: lights_fragment_maps,
		lights_fragment_end: lights_fragment_end,
		logdepthbuf_fragment: logdepthbuf_fragment,
		logdepthbuf_pars_fragment: logdepthbuf_pars_fragment,
		logdepthbuf_pars_vertex: logdepthbuf_pars_vertex,
		logdepthbuf_vertex: logdepthbuf_vertex,
		map_fragment: map_fragment,
		map_pars_fragment: map_pars_fragment,
		map_particle_fragment: map_particle_fragment,
		map_particle_pars_fragment: map_particle_pars_fragment,
		metalnessmap_fragment: metalnessmap_fragment,
		metalnessmap_pars_fragment: metalnessmap_pars_fragment,
		morphnormal_vertex: morphnormal_vertex,
		morphtarget_pars_vertex: morphtarget_pars_vertex,
		morphtarget_vertex: morphtarget_vertex,
		normal_fragment_begin: normal_fragment_begin,
		normal_fragment_maps: normal_fragment_maps,
		normal_pars_fragment: normal_pars_fragment,
		normal_pars_vertex: normal_pars_vertex,
		normal_vertex: normal_vertex,
		normalmap_pars_fragment: normalmap_pars_fragment,
		clearcoat_normal_fragment_begin: clearcoat_normal_fragment_begin,
		clearcoat_normal_fragment_maps: clearcoat_normal_fragment_maps,
		clearcoat_pars_fragment: clearcoat_pars_fragment,
		output_fragment: output_fragment,
		packing: packing,
		premultiplied_alpha_fragment: premultiplied_alpha_fragment,
		project_vertex: project_vertex,
		dithering_fragment: dithering_fragment,
		dithering_pars_fragment: dithering_pars_fragment,
		roughnessmap_fragment: roughnessmap_fragment,
		roughnessmap_pars_fragment: roughnessmap_pars_fragment,
		shadowmap_pars_fragment: shadowmap_pars_fragment,
		shadowmap_pars_vertex: shadowmap_pars_vertex,
		shadowmap_vertex: shadowmap_vertex,
		shadowmask_pars_fragment: shadowmask_pars_fragment,
		skinbase_vertex: skinbase_vertex,
		skinning_pars_vertex: skinning_pars_vertex,
		skinning_vertex: skinning_vertex,
		skinnormal_vertex: skinnormal_vertex,
		specularmap_fragment: specularmap_fragment,
		specularmap_pars_fragment: specularmap_pars_fragment,
		tonemapping_fragment: tonemapping_fragment,
		tonemapping_pars_fragment: tonemapping_pars_fragment,
		transmission_fragment: transmission_fragment,
		transmission_pars_fragment: transmission_pars_fragment,
		uv_pars_fragment: uv_pars_fragment,
		uv_pars_vertex: uv_pars_vertex,
		uv_vertex: uv_vertex,
		uv2_pars_fragment: uv2_pars_fragment,
		uv2_pars_vertex: uv2_pars_vertex,
		uv2_vertex: uv2_vertex,
		worldpos_vertex: worldpos_vertex,
		background_vert: vertex$g,
		background_frag: fragment$g,
		cube_vert: vertex$f,
		cube_frag: fragment$f,
		depth_vert: vertex$e,
		depth_frag: fragment$e,
		distanceRGBA_vert: vertex$d,
		distanceRGBA_frag: fragment$d,
		equirect_vert: vertex$c,
		equirect_frag: fragment$c,
		linedashed_vert: vertex$b,
		linedashed_frag: fragment$b,
		meshbasic_vert: vertex$a,
		meshbasic_frag: fragment$a,
		meshlambert_vert: vertex$9,
		meshlambert_frag: fragment$9,
		meshmatcap_vert: vertex$8,
		meshmatcap_frag: fragment$8,
		meshnormal_vert: vertex$7,
		meshnormal_frag: fragment$7,
		meshphong_vert: vertex$6,
		meshphong_frag: fragment$6,
		meshphysical_vert: vertex$5,
		meshphysical_frag: fragment$5,
		meshtoon_vert: vertex$4,
		meshtoon_frag: fragment$4,
		points_vert: vertex$3,
		points_frag: fragment$3,
		shadow_vert: vertex$2,
		shadow_frag: fragment$2,
		sprite_vert: vertex$1,
		sprite_frag: fragment$1
	};

	/**
	 * Uniforms library for shared webgl shaders
	 */

	const UniformsLib = {
		common: {
			diffuse: {
				value: new Color(0xffffff)
			},
			opacity: {
				value: 1.0
			},
			map: {
				value: null
			},
			uvTransform: {
				value: new Matrix3()
			},
			uv2Transform: {
				value: new Matrix3()
			},
			alphaMap: {
				value: null
			},
			alphaTest: {
				value: 0
			}
		},
		specularmap: {
			specularMap: {
				value: null
			}
		},
		envmap: {
			envMap: {
				value: null
			},
			flipEnvMap: {
				value: -1
			},
			reflectivity: {
				value: 1.0
			},
			// basic, lambert, phong
			ior: {
				value: 1.5
			},
			// standard, physical
			refractionRatio: {
				value: 0.98
			},
			maxMipLevel: {
				value: 0
			}
		},
		aomap: {
			aoMap: {
				value: null
			},
			aoMapIntensity: {
				value: 1
			}
		},
		lightmap: {
			lightMap: {
				value: null
			},
			lightMapIntensity: {
				value: 1
			}
		},
		emissivemap: {
			emissiveMap: {
				value: null
			}
		},
		bumpmap: {
			bumpMap: {
				value: null
			},
			bumpScale: {
				value: 1
			}
		},
		normalmap: {
			normalMap: {
				value: null
			},
			normalScale: {
				value: new Vector2(1, 1)
			}
		},
		displacementmap: {
			displacementMap: {
				value: null
			},
			displacementScale: {
				value: 1
			},
			displacementBias: {
				value: 0
			}
		},
		roughnessmap: {
			roughnessMap: {
				value: null
			}
		},
		metalnessmap: {
			metalnessMap: {
				value: null
			}
		},
		gradientmap: {
			gradientMap: {
				value: null
			}
		},
		fog: {
			fogDensity: {
				value: 0.00025
			},
			fogNear: {
				value: 1
			},
			fogFar: {
				value: 2000
			},
			fogColor: {
				value: new Color(0xffffff)
			}
		},
		lights: {
			ambientLightColor: {
				value: []
			},
			lightProbe: {
				value: []
			},
			directionalLights: {
				value: [],
				properties: {
					direction: {},
					color: {}
				}
			},
			directionalLightShadows: {
				value: [],
				properties: {
					shadowBias: {},
					shadowNormalBias: {},
					shadowRadius: {},
					shadowMapSize: {}
				}
			},
			directionalShadowMap: {
				value: []
			},
			directionalShadowMatrix: {
				value: []
			},
			spotLights: {
				value: [],
				properties: {
					color: {},
					position: {},
					direction: {},
					distance: {},
					coneCos: {},
					penumbraCos: {},
					decay: {}
				}
			},
			spotLightShadows: {
				value: [],
				properties: {
					shadowBias: {},
					shadowNormalBias: {},
					shadowRadius: {},
					shadowMapSize: {}
				}
			},
			spotShadowMap: {
				value: []
			},
			spotShadowMatrix: {
				value: []
			},
			pointLights: {
				value: [],
				properties: {
					color: {},
					position: {},
					decay: {},
					distance: {}
				}
			},
			pointLightShadows: {
				value: [],
				properties: {
					shadowBias: {},
					shadowNormalBias: {},
					shadowRadius: {},
					shadowMapSize: {},
					shadowCameraNear: {},
					shadowCameraFar: {}
				}
			},
			pointShadowMap: {
				value: []
			},
			pointShadowMatrix: {
				value: []
			},
			hemisphereLights: {
				value: [],
				properties: {
					direction: {},
					skyColor: {},
					groundColor: {}
				}
			},
			// TODO (abelnation): RectAreaLight BRDF data needs to be moved from example to main src
			rectAreaLights: {
				value: [],
				properties: {
					color: {},
					position: {},
					width: {},
					height: {}
				}
			},
			ltc_1: {
				value: null
			},
			ltc_2: {
				value: null
			}
		},
		points: {
			diffuse: {
				value: new Color(0xffffff)
			},
			opacity: {
				value: 1.0
			},
			size: {
				value: 1.0
			},
			scale: {
				value: 1.0
			},
			map: {
				value: null
			},
			alphaMap: {
				value: null
			},
			alphaTest: {
				value: 0
			},
			uvTransform: {
				value: new Matrix3()
			}
		},
		sprite: {
			diffuse: {
				value: new Color(0xffffff)
			},
			opacity: {
				value: 1.0
			},
			center: {
				value: new Vector2(0.5, 0.5)
			},
			rotation: {
				value: 0.0
			},
			map: {
				value: null
			},
			alphaMap: {
				value: null
			},
			alphaTest: {
				value: 0
			},
			uvTransform: {
				value: new Matrix3()
			}
		}
	};

	const ShaderLib = {
		basic: {
			uniforms: mergeUniforms([UniformsLib.common, UniformsLib.specularmap, UniformsLib.envmap, UniformsLib.aomap, UniformsLib.lightmap, UniformsLib.fog]),
			vertexShader: ShaderChunk.meshbasic_vert,
			fragmentShader: ShaderChunk.meshbasic_frag
		},
		lambert: {
			uniforms: mergeUniforms([UniformsLib.common, UniformsLib.specularmap, UniformsLib.envmap, UniformsLib.aomap, UniformsLib.lightmap, UniformsLib.emissivemap, UniformsLib.fog, UniformsLib.lights, {
				emissive: {
					value: new Color(0x000000)
				}
			}]),
			vertexShader: ShaderChunk.meshlambert_vert,
			fragmentShader: ShaderChunk.meshlambert_frag
		},
		phong: {
			uniforms: mergeUniforms([UniformsLib.common, UniformsLib.specularmap, UniformsLib.envmap, UniformsLib.aomap, UniformsLib.lightmap, UniformsLib.emissivemap, UniformsLib.bumpmap, UniformsLib.normalmap, UniformsLib.displacementmap, UniformsLib.fog, UniformsLib.lights, {
				emissive: {
					value: new Color(0x000000)
				},
				specular: {
					value: new Color(0x111111)
				},
				shininess: {
					value: 30
				}
			}]),
			vertexShader: ShaderChunk.meshphong_vert,
			fragmentShader: ShaderChunk.meshphong_frag
		},
		standard: {
			uniforms: mergeUniforms([UniformsLib.common, UniformsLib.envmap, UniformsLib.aomap, UniformsLib.lightmap, UniformsLib.emissivemap, UniformsLib.bumpmap, UniformsLib.normalmap, UniformsLib.displacementmap, UniformsLib.roughnessmap, UniformsLib.metalnessmap, UniformsLib.fog, UniformsLib.lights, {
				emissive: {
					value: new Color(0x000000)
				},
				roughness: {
					value: 1.0
				},
				metalness: {
					value: 0.0
				},
				envMapIntensity: {
					value: 1
				} // temporary

			}]),
			vertexShader: ShaderChunk.meshphysical_vert,
			fragmentShader: ShaderChunk.meshphysical_frag
		},
		toon: {
			uniforms: mergeUniforms([UniformsLib.common, UniformsLib.aomap, UniformsLib.lightmap, UniformsLib.emissivemap, UniformsLib.bumpmap, UniformsLib.normalmap, UniformsLib.displacementmap, UniformsLib.gradientmap, UniformsLib.fog, UniformsLib.lights, {
				emissive: {
					value: new Color(0x000000)
				}
			}]),
			vertexShader: ShaderChunk.meshtoon_vert,
			fragmentShader: ShaderChunk.meshtoon_frag
		},
		matcap: {
			uniforms: mergeUniforms([UniformsLib.common, UniformsLib.bumpmap, UniformsLib.normalmap, UniformsLib.displacementmap, UniformsLib.fog, {
				matcap: {
					value: null
				}
			}]),
			vertexShader: ShaderChunk.meshmatcap_vert,
			fragmentShader: ShaderChunk.meshmatcap_frag
		},
		points: {
			uniforms: mergeUniforms([UniformsLib.points, UniformsLib.fog]),
			vertexShader: ShaderChunk.points_vert,
			fragmentShader: ShaderChunk.points_frag
		},
		dashed: {
			uniforms: mergeUniforms([UniformsLib.common, UniformsLib.fog, {
				scale: {
					value: 1
				},
				dashSize: {
					value: 1
				},
				totalSize: {
					value: 2
				}
			}]),
			vertexShader: ShaderChunk.linedashed_vert,
			fragmentShader: ShaderChunk.linedashed_frag
		},
		depth: {
			uniforms: mergeUniforms([UniformsLib.common, UniformsLib.displacementmap]),
			vertexShader: ShaderChunk.depth_vert,
			fragmentShader: ShaderChunk.depth_frag
		},
		normal: {
			uniforms: mergeUniforms([UniformsLib.common, UniformsLib.bumpmap, UniformsLib.normalmap, UniformsLib.displacementmap, {
				opacity: {
					value: 1.0
				}
			}]),
			vertexShader: ShaderChunk.meshnormal_vert,
			fragmentShader: ShaderChunk.meshnormal_frag
		},
		sprite: {
			uniforms: mergeUniforms([UniformsLib.sprite, UniformsLib.fog]),
			vertexShader: ShaderChunk.sprite_vert,
			fragmentShader: ShaderChunk.sprite_frag
		},
		background: {
			uniforms: {
				uvTransform: {
					value: new Matrix3()
				},
				t2D: {
					value: null
				}
			},
			vertexShader: ShaderChunk.background_vert,
			fragmentShader: ShaderChunk.background_frag
		},

		/* -------------------------------------------------------------------------
		//	Cube map shader
		 ------------------------------------------------------------------------- */
		cube: {
			uniforms: mergeUniforms([UniformsLib.envmap, {
				opacity: {
					value: 1.0
				}
			}]),
			vertexShader: ShaderChunk.cube_vert,
			fragmentShader: ShaderChunk.cube_frag
		},
		equirect: {
			uniforms: {
				tEquirect: {
					value: null
				}
			},
			vertexShader: ShaderChunk.equirect_vert,
			fragmentShader: ShaderChunk.equirect_frag
		},
		distanceRGBA: {
			uniforms: mergeUniforms([UniformsLib.common, UniformsLib.displacementmap, {
				referencePosition: {
					value: new Vector3()
				},
				nearDistance: {
					value: 1
				},
				farDistance: {
					value: 1000
				}
			}]),
			vertexShader: ShaderChunk.distanceRGBA_vert,
			fragmentShader: ShaderChunk.distanceRGBA_frag
		},
		shadow: {
			uniforms: mergeUniforms([UniformsLib.lights, UniformsLib.fog, {
				color: {
					value: new Color(0x00000)
				},
				opacity: {
					value: 1.0
				}
			}]),
			vertexShader: ShaderChunk.shadow_vert,
			fragmentShader: ShaderChunk.shadow_frag
		}
	};
	ShaderLib.physical = {
		uniforms: mergeUniforms([ShaderLib.standard.uniforms, {
			clearcoat: {
				value: 0
			},
			clearcoatMap: {
				value: null
			},
			clearcoatRoughness: {
				value: 0
			},
			clearcoatRoughnessMap: {
				value: null
			},
			clearcoatNormalScale: {
				value: new Vector2(1, 1)
			},
			clearcoatNormalMap: {
				value: null
			},
			sheen: {
				value: 0
			},
			sheenTint: {
				value: new Color(0x000000)
			},
			sheenRoughness: {
				value: 0
			},
			transmission: {
				value: 0
			},
			transmissionMap: {
				value: null
			},
			transmissionSamplerSize: {
				value: new Vector2()
			},
			transmissionSamplerMap: {
				value: null
			},
			thickness: {
				value: 0
			},
			thicknessMap: {
				value: null
			},
			attenuationDistance: {
				value: 0
			},
			attenuationTint: {
				value: new Color(0x000000)
			},
			specularIntensity: {
				value: 0
			},
			specularIntensityMap: {
				value: null
			},
			specularTint: {
				value: new Color(1, 1, 1)
			},
			specularTintMap: {
				value: null
			}
		}]),
		vertexShader: ShaderChunk.meshphysical_vert,
		fragmentShader: ShaderChunk.meshphysical_frag
	};

	function WebGLBackground(renderer, cubemaps, state, objects, premultipliedAlpha) {
		const clearColor = new Color(0x000000);
		let clearAlpha = 0;
		let planeMesh;
		let boxMesh;
		let currentBackground = null;
		let currentBackgroundVersion = 0;
		let currentTonemapping = null;

		function render(renderList, scene) {
			let forceClear = false;
			let background = scene.isScene === true ? scene.background : null;

			if (background && background.isTexture) {
				background = cubemaps.get(background);
			} // Ignore background in AR
			// TODO: Reconsider this.


			const xr = renderer.xr;
			const session = xr.getSession && xr.getSession();

			if (session && session.environmentBlendMode === 'additive') {
				background = null;
			}

			if (background === null) {
				setClear(clearColor, clearAlpha);
			} else if (background && background.isColor) {
				setClear(background, 1);
				forceClear = true;
			}

			if (renderer.autoClear || forceClear) {
				renderer.clear(renderer.autoClearColor, renderer.autoClearDepth, renderer.autoClearStencil);
			}

			if (background && (background.isCubeTexture || background.mapping === CubeUVReflectionMapping)) {
				if (boxMesh === undefined) {
					boxMesh = new Mesh(new BoxGeometry(1, 1, 1), new ShaderMaterial({
						name: 'BackgroundCubeMaterial',
						uniforms: cloneUniforms(ShaderLib.cube.uniforms),
						vertexShader: ShaderLib.cube.vertexShader,
						fragmentShader: ShaderLib.cube.fragmentShader,
						side: BackSide,
						depthTest: false,
						depthWrite: false,
						fog: false
					}));
					boxMesh.geometry.deleteAttribute('normal');
					boxMesh.geometry.deleteAttribute('uv');

					boxMesh.onBeforeRender = function (renderer, scene, camera) {
						this.matrixWorld.copyPosition(camera.matrixWorld);
					}; // enable code injection for non-built-in material


					Object.defineProperty(boxMesh.material, 'envMap', {
						get: function () {
							return this.uniforms.envMap.value;
						}
					});
					objects.update(boxMesh);
				}

				boxMesh.material.uniforms.envMap.value = background;
				boxMesh.material.uniforms.flipEnvMap.value = background.isCubeTexture && background.isRenderTargetTexture === false ? -1 : 1;

				if (currentBackground !== background || currentBackgroundVersion !== background.version || currentTonemapping !== renderer.toneMapping) {
					boxMesh.material.needsUpdate = true;
					currentBackground = background;
					currentBackgroundVersion = background.version;
					currentTonemapping = renderer.toneMapping;
				} // push to the pre-sorted opaque render list


				renderList.unshift(boxMesh, boxMesh.geometry, boxMesh.material, 0, 0, null);
			} else if (background && background.isTexture) {
				if (planeMesh === undefined) {
					planeMesh = new Mesh(new PlaneGeometry(2, 2), new ShaderMaterial({
						name: 'BackgroundMaterial',
						uniforms: cloneUniforms(ShaderLib.background.uniforms),
						vertexShader: ShaderLib.background.vertexShader,
						fragmentShader: ShaderLib.background.fragmentShader,
						side: FrontSide,
						depthTest: false,
						depthWrite: false,
						fog: false
					}));
					planeMesh.geometry.deleteAttribute('normal'); // enable code injection for non-built-in material

					Object.defineProperty(planeMesh.material, 'map', {
						get: function () {
							return this.uniforms.t2D.value;
						}
					});
					objects.update(planeMesh);
				}

				planeMesh.material.uniforms.t2D.value = background;

				if (background.matrixAutoUpdate === true) {
					background.updateMatrix();
				}

				planeMesh.material.uniforms.uvTransform.value.copy(background.matrix);

				if (currentBackground !== background || currentBackgroundVersion !== background.version || currentTonemapping !== renderer.toneMapping) {
					planeMesh.material.needsUpdate = true;
					currentBackground = background;
					currentBackgroundVersion = background.version;
					currentTonemapping = renderer.toneMapping;
				} // push to the pre-sorted opaque render list


				renderList.unshift(planeMesh, planeMesh.geometry, planeMesh.material, 0, 0, null);
			}
		}

		function setClear(color, alpha) {
			state.buffers.color.setClear(color.r, color.g, color.b, alpha, premultipliedAlpha);
		}

		return {
			getClearColor: function () {
				return clearColor;
			},
			setClearColor: function (color, alpha = 1) {
				clearColor.set(color);
				clearAlpha = alpha;
				setClear(clearColor, clearAlpha);
			},
			getClearAlpha: function () {
				return clearAlpha;
			},
			setClearAlpha: function (alpha) {
				clearAlpha = alpha;
				setClear(clearColor, clearAlpha);
			},
			render: render
		};
	}

	function WebGLBindingStates(gl, extensions, attributes, capabilities) {
		const maxVertexAttributes = gl.getParameter(gl.MAX_VERTEX_ATTRIBS);
		const extension = capabilities.isWebGL2 ? null : extensions.get('OES_vertex_array_object');
		const vaoAvailable = capabilities.isWebGL2 || extension !== null;
		const bindingStates = {};
		const defaultState = createBindingState(null);
		let currentState = defaultState;

		function setup(object, material, program, geometry, index) {
			let updateBuffers = false;

			if (vaoAvailable) {
				const state = getBindingState(geometry, program, material);

				if (currentState !== state) {
					currentState = state;
					bindVertexArrayObject(currentState.object);
				}

				updateBuffers = needsUpdate(geometry, index);
				if (updateBuffers) saveCache(geometry, index);
			} else {
				const wireframe = material.wireframe === true;

				if (currentState.geometry !== geometry.id || currentState.program !== program.id || currentState.wireframe !== wireframe) {
					currentState.geometry = geometry.id;
					currentState.program = program.id;
					currentState.wireframe = wireframe;
					updateBuffers = true;
				}
			}

			if (object.isInstancedMesh === true) {
				updateBuffers = true;
			}

			if (index !== null) {
				attributes.update(index, gl.ELEMENT_ARRAY_BUFFER);
			}

			if (updateBuffers) {
				setupVertexAttributes(object, material, program, geometry);

				if (index !== null) {
					gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, attributes.get(index).buffer);
				}
			}
		}

		function createVertexArrayObject() {
			if (capabilities.isWebGL2) return gl.createVertexArray();
			return extension.createVertexArrayOES();
		}

		function bindVertexArrayObject(vao) {
			if (capabilities.isWebGL2) return gl.bindVertexArray(vao);
			return extension.bindVertexArrayOES(vao);
		}

		function deleteVertexArrayObject(vao) {
			if (capabilities.isWebGL2) return gl.deleteVertexArray(vao);
			return extension.deleteVertexArrayOES(vao);
		}

		function getBindingState(geometry, program, material) {
			const wireframe = material.wireframe === true;
			let programMap = bindingStates[geometry.id];

			if (programMap === undefined) {
				programMap = {};
				bindingStates[geometry.id] = programMap;
			}

			let stateMap = programMap[program.id];

			if (stateMap === undefined) {
				stateMap = {};
				programMap[program.id] = stateMap;
			}

			let state = stateMap[wireframe];

			if (state === undefined) {
				state = createBindingState(createVertexArrayObject());
				stateMap[wireframe] = state;
			}

			return state;
		}

		function createBindingState(vao) {
			const newAttributes = [];
			const enabledAttributes = [];
			const attributeDivisors = [];

			for (let i = 0; i < maxVertexAttributes; i++) {
				newAttributes[i] = 0;
				enabledAttributes[i] = 0;
				attributeDivisors[i] = 0;
			}

			return {
				// for backward compatibility on non-VAO support browser
				geometry: null,
				program: null,
				wireframe: false,
				newAttributes: newAttributes,
				enabledAttributes: enabledAttributes,
				attributeDivisors: attributeDivisors,
				object: vao,
				attributes: {},
				index: null
			};
		}

		function needsUpdate(geometry, index) {
			const cachedAttributes = currentState.attributes;
			const geometryAttributes = geometry.attributes;
			let attributesNum = 0;

			for (const key in geometryAttributes) {
				const cachedAttribute = cachedAttributes[key];
				const geometryAttribute = geometryAttributes[key];
				if (cachedAttribute === undefined) return true;
				if (cachedAttribute.attribute !== geometryAttribute) return true;
				if (cachedAttribute.data !== geometryAttribute.data) return true;
				attributesNum++;
			}

			if (currentState.attributesNum !== attributesNum) return true;
			if (currentState.index !== index) return true;
			return false;
		}

		function saveCache(geometry, index) {
			const cache = {};
			const attributes = geometry.attributes;
			let attributesNum = 0;

			for (const key in attributes) {
				const attribute = attributes[key];
				const data = {};
				data.attribute = attribute;

				if (attribute.data) {
					data.data = attribute.data;
				}

				cache[key] = data;
				attributesNum++;
			}

			currentState.attributes = cache;
			currentState.attributesNum = attributesNum;
			currentState.index = index;
		}

		function initAttributes() {
			const newAttributes = currentState.newAttributes;

			for (let i = 0, il = newAttributes.length; i < il; i++) {
				newAttributes[i] = 0;
			}
		}

		function enableAttribute(attribute) {
			enableAttributeAndDivisor(attribute, 0);
		}

		function enableAttributeAndDivisor(attribute, meshPerAttribute) {
			const newAttributes = currentState.newAttributes;
			const enabledAttributes = currentState.enabledAttributes;
			const attributeDivisors = currentState.attributeDivisors;
			newAttributes[attribute] = 1;

			if (enabledAttributes[attribute] === 0) {
				gl.enableVertexAttribArray(attribute);
				enabledAttributes[attribute] = 1;
			}

			if (attributeDivisors[attribute] !== meshPerAttribute) {
				const extension = capabilities.isWebGL2 ? gl : extensions.get('ANGLE_instanced_arrays');
				extension[capabilities.isWebGL2 ? 'vertexAttribDivisor' : 'vertexAttribDivisorANGLE'](attribute, meshPerAttribute);
				attributeDivisors[attribute] = meshPerAttribute;
			}
		}

		function disableUnusedAttributes() {
			const newAttributes = currentState.newAttributes;
			const enabledAttributes = currentState.enabledAttributes;

			for (let i = 0, il = enabledAttributes.length; i < il; i++) {
				if (enabledAttributes[i] !== newAttributes[i]) {
					gl.disableVertexAttribArray(i);
					enabledAttributes[i] = 0;
				}
			}
		}

		function vertexAttribPointer(index, size, type, normalized, stride, offset) {
			if (capabilities.isWebGL2 === true && (type === gl.INT || type === gl.UNSIGNED_INT)) {
				gl.vertexAttribIPointer(index, size, type, stride, offset);
			} else {
				gl.vertexAttribPointer(index, size, type, normalized, stride, offset);
			}
		}

		function setupVertexAttributes(object, material, program, geometry) {
			if (capabilities.isWebGL2 === false && (object.isInstancedMesh || geometry.isInstancedBufferGeometry)) {
				if (extensions.get('ANGLE_instanced_arrays') === null) return;
			}

			initAttributes();
			const geometryAttributes = geometry.attributes;
			const programAttributes = program.getAttributes();
			const materialDefaultAttributeValues = material.defaultAttributeValues;

			for (const name in programAttributes) {
				const programAttribute = programAttributes[name];

				if (programAttribute.location >= 0) {
					let geometryAttribute = geometryAttributes[name];

					if (geometryAttribute === undefined) {
						if (name === 'instanceMatrix' && object.instanceMatrix) geometryAttribute = object.instanceMatrix;
						if (name === 'instanceColor' && object.instanceColor) geometryAttribute = object.instanceColor;
					}

					if (geometryAttribute !== undefined) {
						const normalized = geometryAttribute.normalized;
						const size = geometryAttribute.itemSize;
						const attribute = attributes.get(geometryAttribute); // TODO Attribute may not be available on context restore

						if (attribute === undefined) continue;
						const buffer = attribute.buffer;
						const type = attribute.type;
						const bytesPerElement = attribute.bytesPerElement;

						if (geometryAttribute.isInterleavedBufferAttribute) {
							const data = geometryAttribute.data;
							const stride = data.stride;
							const offset = geometryAttribute.offset;

							if (data && data.isInstancedInterleavedBuffer) {
								for (let i = 0; i < programAttribute.locationSize; i++) {
									enableAttributeAndDivisor(programAttribute.location + i, data.meshPerAttribute);
								}

								if (object.isInstancedMesh !== true && geometry._maxInstanceCount === undefined) {
									geometry._maxInstanceCount = data.meshPerAttribute * data.count;
								}
							} else {
								for (let i = 0; i < programAttribute.locationSize; i++) {
									enableAttribute(programAttribute.location + i);
								}
							}

							gl.bindBuffer(gl.ARRAY_BUFFER, buffer);

							for (let i = 0; i < programAttribute.locationSize; i++) {
								vertexAttribPointer(programAttribute.location + i, size / programAttribute.locationSize, type, normalized, stride * bytesPerElement, (offset + size / programAttribute.locationSize * i) * bytesPerElement);
							}
						} else {
							if (geometryAttribute.isInstancedBufferAttribute) {
								for (let i = 0; i < programAttribute.locationSize; i++) {
									enableAttributeAndDivisor(programAttribute.location + i, geometryAttribute.meshPerAttribute);
								}

								if (object.isInstancedMesh !== true && geometry._maxInstanceCount === undefined) {
									geometry._maxInstanceCount = geometryAttribute.meshPerAttribute * geometryAttribute.count;
								}
							} else {
								for (let i = 0; i < programAttribute.locationSize; i++) {
									enableAttribute(programAttribute.location + i);
								}
							}

							gl.bindBuffer(gl.ARRAY_BUFFER, buffer);

							for (let i = 0; i < programAttribute.locationSize; i++) {
								vertexAttribPointer(programAttribute.location + i, size / programAttribute.locationSize, type, normalized, size * bytesPerElement, size / programAttribute.locationSize * i * bytesPerElement);
							}
						}
					} else if (materialDefaultAttributeValues !== undefined) {
						const value = materialDefaultAttributeValues[name];

						if (value !== undefined) {
							switch (value.length) {
								case 2:
									gl.vertexAttrib2fv(programAttribute.location, value);
									break;

								case 3:
									gl.vertexAttrib3fv(programAttribute.location, value);
									break;

								case 4:
									gl.vertexAttrib4fv(programAttribute.location, value);
									break;

								default:
									gl.vertexAttrib1fv(programAttribute.location, value);
							}
						}
					}
				}
			}

			disableUnusedAttributes();
		}

		function dispose() {
			reset();

			for (const geometryId in bindingStates) {
				const programMap = bindingStates[geometryId];

				for (const programId in programMap) {
					const stateMap = programMap[programId];

					for (const wireframe in stateMap) {
						deleteVertexArrayObject(stateMap[wireframe].object);
						delete stateMap[wireframe];
					}

					delete programMap[programId];
				}

				delete bindingStates[geometryId];
			}
		}

		function releaseStatesOfGeometry(geometry) {
			if (bindingStates[geometry.id] === undefined) return;
			const programMap = bindingStates[geometry.id];

			for (const programId in programMap) {
				const stateMap = programMap[programId];

				for (const wireframe in stateMap) {
					deleteVertexArrayObject(stateMap[wireframe].object);
					delete stateMap[wireframe];
				}

				delete programMap[programId];
			}

			delete bindingStates[geometry.id];
		}

		function releaseStatesOfProgram(program) {
			for (const geometryId in bindingStates) {
				const programMap = bindingStates[geometryId];
				if (programMap[program.id] === undefined) continue;
				const stateMap = programMap[program.id];

				for (const wireframe in stateMap) {
					deleteVertexArrayObject(stateMap[wireframe].object);
					delete stateMap[wireframe];
				}

				delete programMap[program.id];
			}
		}

		function reset() {
			resetDefaultState();
			if (currentState === defaultState) return;
			currentState = defaultState;
			bindVertexArrayObject(currentState.object);
		} // for backward-compatilibity


		function resetDefaultState() {
			defaultState.geometry = null;
			defaultState.program = null;
			defaultState.wireframe = false;
		}

		return {
			setup: setup,
			reset: reset,
			resetDefaultState: resetDefaultState,
			dispose: dispose,
			releaseStatesOfGeometry: releaseStatesOfGeometry,
			releaseStatesOfProgram: releaseStatesOfProgram,
			initAttributes: initAttributes,
			enableAttribute: enableAttribute,
			disableUnusedAttributes: disableUnusedAttributes
		};
	}

	function WebGLBufferRenderer(gl, extensions, info, capabilities) {
		const isWebGL2 = capabilities.isWebGL2;
		let mode;

		function setMode(value) {
			mode = value;
		}

		function render(start, count) {
			gl.drawArrays(mode, start, count);
			info.update(count, mode, 1);
		}

		function renderInstances(start, count, primcount) {
			if (primcount === 0) return;
			let extension, methodName;

			if (isWebGL2) {
				extension = gl;
				methodName = 'drawArraysInstanced';
			} else {
				extension = extensions.get('ANGLE_instanced_arrays');
				methodName = 'drawArraysInstancedANGLE';

				if (extension === null) {
					console.error('THREE.WebGLBufferRenderer: using THREE.InstancedBufferGeometry but hardware does not support extension ANGLE_instanced_arrays.');
					return;
				}
			}

			extension[methodName](mode, start, count, primcount);
			info.update(count, mode, primcount);
		} //


		this.setMode = setMode;
		this.render = render;
		this.renderInstances = renderInstances;
	}

	function WebGLCapabilities(gl, extensions, parameters) {
		let maxAnisotropy;

		function getMaxAnisotropy() {
			if (maxAnisotropy !== undefined) return maxAnisotropy;

			if (extensions.has('EXT_texture_filter_anisotropic') === true) {
				const extension = extensions.get('EXT_texture_filter_anisotropic');
				maxAnisotropy = gl.getParameter(extension.MAX_TEXTURE_MAX_ANISOTROPY_EXT);
			} else {
				maxAnisotropy = 0;
			}

			return maxAnisotropy;
		}

		function getMaxPrecision(precision) {
			if (precision === 'highp') {
				if (gl.getShaderPrecisionFormat(gl.VERTEX_SHADER, gl.HIGH_FLOAT).precision > 0 && gl.getShaderPrecisionFormat(gl.FRAGMENT_SHADER, gl.HIGH_FLOAT).precision > 0) {
					return 'highp';
				}

				precision = 'mediump';
			}

			if (precision === 'mediump') {
				if (gl.getShaderPrecisionFormat(gl.VERTEX_SHADER, gl.MEDIUM_FLOAT).precision > 0 && gl.getShaderPrecisionFormat(gl.FRAGMENT_SHADER, gl.MEDIUM_FLOAT).precision > 0) {
					return 'mediump';
				}
			}

			return 'lowp';
		}
		/* eslint-disable no-undef */


		const isWebGL2 = typeof WebGL2RenderingContext !== 'undefined' && gl instanceof WebGL2RenderingContext || typeof WebGL2ComputeRenderingContext !== 'undefined' && gl instanceof WebGL2ComputeRenderingContext;
		/* eslint-enable no-undef */

		let precision = parameters.precision !== undefined ? parameters.precision : 'highp';
		const maxPrecision = getMaxPrecision(precision);

		if (maxPrecision !== precision) {
			console.warn('THREE.WebGLRenderer:', precision, 'not supported, using', maxPrecision, 'instead.');
			precision = maxPrecision;
		}

		const drawBuffers = isWebGL2 || extensions.has('WEBGL_draw_buffers');
		const logarithmicDepthBuffer = parameters.logarithmicDepthBuffer === true;
		const maxTextures = gl.getParameter(gl.MAX_TEXTURE_IMAGE_UNITS);
		const maxVertexTextures = gl.getParameter(gl.MAX_VERTEX_TEXTURE_IMAGE_UNITS);
		const maxTextureSize = gl.getParameter(gl.MAX_TEXTURE_SIZE);
		const maxCubemapSize = gl.getParameter(gl.MAX_CUBE_MAP_TEXTURE_SIZE);
		const maxAttributes = gl.getParameter(gl.MAX_VERTEX_ATTRIBS);
		const maxVertexUniforms = gl.getParameter(gl.MAX_VERTEX_UNIFORM_VECTORS);
		const maxVaryings = gl.getParameter(gl.MAX_VARYING_VECTORS);
		const maxFragmentUniforms = gl.getParameter(gl.MAX_FRAGMENT_UNIFORM_VECTORS);
		const vertexTextures = maxVertexTextures > 0;
		const floatFragmentTextures = isWebGL2 || extensions.has('OES_texture_float');
		const floatVertexTextures = vertexTextures && floatFragmentTextures;
		const maxSamples = isWebGL2 ? gl.getParameter(gl.MAX_SAMPLES) : 0;
		return {
			isWebGL2: isWebGL2,
			drawBuffers: drawBuffers,
			getMaxAnisotropy: getMaxAnisotropy,
			getMaxPrecision: getMaxPrecision,
			precision: precision,
			logarithmicDepthBuffer: logarithmicDepthBuffer,
			maxTextures: maxTextures,
			maxVertexTextures: maxVertexTextures,
			maxTextureSize: maxTextureSize,
			maxCubemapSize: maxCubemapSize,
			maxAttributes: maxAttributes,
			maxVertexUniforms: maxVertexUniforms,
			maxVaryings: maxVaryings,
			maxFragmentUniforms: maxFragmentUniforms,
			vertexTextures: vertexTextures,
			floatFragmentTextures: floatFragmentTextures,
			floatVertexTextures: floatVertexTextures,
			maxSamples: maxSamples
		};
	}

	function WebGLClipping(properties) {
		const scope = this;
		let globalState = null,
				numGlobalPlanes = 0,
				localClippingEnabled = false,
				renderingShadows = false;
		const plane = new Plane(),
					viewNormalMatrix = new Matrix3(),
					uniform = {
			value: null,
			needsUpdate: false
		};
		this.uniform = uniform;
		this.numPlanes = 0;
		this.numIntersection = 0;

		this.init = function (planes, enableLocalClipping, camera) {
			const enabled = planes.length !== 0 || enableLocalClipping || // enable state of previous frame - the clipping code has to
			// run another frame in order to reset the state:
			numGlobalPlanes !== 0 || localClippingEnabled;
			localClippingEnabled = enableLocalClipping;
			globalState = projectPlanes(planes, camera, 0);
			numGlobalPlanes = planes.length;
			return enabled;
		};

		this.beginShadows = function () {
			renderingShadows = true;
			projectPlanes(null);
		};

		this.endShadows = function () {
			renderingShadows = false;
			resetGlobalState();
		};

		this.setState = function (material, camera, useCache) {
			const planes = material.clippingPlanes,
						clipIntersection = material.clipIntersection,
						clipShadows = material.clipShadows;
			const materialProperties = properties.get(material);

			if (!localClippingEnabled || planes === null || planes.length === 0 || renderingShadows && !clipShadows) {
				// there's no local clipping
				if (renderingShadows) {
					// there's no global clipping
					projectPlanes(null);
				} else {
					resetGlobalState();
				}
			} else {
				const nGlobal = renderingShadows ? 0 : numGlobalPlanes,
							lGlobal = nGlobal * 4;
				let dstArray = materialProperties.clippingState || null;
				uniform.value = dstArray; // ensure unique state

				dstArray = projectPlanes(planes, camera, lGlobal, useCache);

				for (let i = 0; i !== lGlobal; ++i) {
					dstArray[i] = globalState[i];
				}

				materialProperties.clippingState = dstArray;
				this.numIntersection = clipIntersection ? this.numPlanes : 0;
				this.numPlanes += nGlobal;
			}
		};

		function resetGlobalState() {
			if (uniform.value !== globalState) {
				uniform.value = globalState;
				uniform.needsUpdate = numGlobalPlanes > 0;
			}

			scope.numPlanes = numGlobalPlanes;
			scope.numIntersection = 0;
		}

		function projectPlanes(planes, camera, dstOffset, skipTransform) {
			const nPlanes = planes !== null ? planes.length : 0;
			let dstArray = null;

			if (nPlanes !== 0) {
				dstArray = uniform.value;

				if (skipTransform !== true || dstArray === null) {
					const flatSize = dstOffset + nPlanes * 4,
								viewMatrix = camera.matrixWorldInverse;
					viewNormalMatrix.getNormalMatrix(viewMatrix);

					if (dstArray === null || dstArray.length < flatSize) {
						dstArray = new Float32Array(flatSize);
					}

					for (let i = 0, i4 = dstOffset; i !== nPlanes; ++i, i4 += 4) {
						plane.copy(planes[i]).applyMatrix4(viewMatrix, viewNormalMatrix);
						plane.normal.toArray(dstArray, i4);
						dstArray[i4 + 3] = plane.constant;
					}
				}

				uniform.value = dstArray;
				uniform.needsUpdate = true;
			}

			scope.numPlanes = nPlanes;
			scope.numIntersection = 0;
			return dstArray;
		}
	}

	function WebGLCubeMaps(renderer) {
		let cubemaps = new WeakMap();

		function mapTextureMapping(texture, mapping) {
			if (mapping === EquirectangularReflectionMapping) {
				texture.mapping = CubeReflectionMapping;
			} else if (mapping === EquirectangularRefractionMapping) {
				texture.mapping = CubeRefractionMapping;
			}

			return texture;
		}

		function get(texture) {
			if (texture && texture.isTexture && texture.isRenderTargetTexture === false) {
				const mapping = texture.mapping;

				if (mapping === EquirectangularReflectionMapping || mapping === EquirectangularRefractionMapping) {
					if (cubemaps.has(texture)) {
						const cubemap = cubemaps.get(texture).texture;
						return mapTextureMapping(cubemap, texture.mapping);
					} else {
						const image = texture.image;

						if (image && image.height > 0) {
							const currentRenderTarget = renderer.getRenderTarget();
							const renderTarget = new WebGLCubeRenderTarget(image.height / 2);
							renderTarget.fromEquirectangularTexture(renderer, texture);
							cubemaps.set(texture, renderTarget);
							renderer.setRenderTarget(currentRenderTarget);
							texture.addEventListener('dispose', onTextureDispose);
							return mapTextureMapping(renderTarget.texture, texture.mapping);
						} else {
							// image not yet ready. try the conversion next frame
							return null;
						}
					}
				}
			}

			return texture;
		}

		function onTextureDispose(event) {
			const texture = event.target;
			texture.removeEventListener('dispose', onTextureDispose);
			const cubemap = cubemaps.get(texture);

			if (cubemap !== undefined) {
				cubemaps.delete(texture);
				cubemap.dispose();
			}
		}

		function dispose() {
			cubemaps = new WeakMap();
		}

		return {
			get: get,
			dispose: dispose
		};
	}

	class OrthographicCamera extends Camera {
		constructor(left = -1, right = 1, top = 1, bottom = -1, near = 0.1, far = 2000) {
			super();
			this.type = 'OrthographicCamera';
			this.zoom = 1;
			this.view = null;
			this.left = left;
			this.right = right;
			this.top = top;
			this.bottom = bottom;
			this.near = near;
			this.far = far;
			this.updateProjectionMatrix();
		}

		copy(source, recursive) {
			super.copy(source, recursive);
			this.left = source.left;
			this.right = source.right;
			this.top = source.top;
			this.bottom = source.bottom;
			this.near = source.near;
			this.far = source.far;
			this.zoom = source.zoom;
			this.view = source.view === null ? null : Object.assign({}, source.view);
			return this;
		}

		setViewOffset(fullWidth, fullHeight, x, y, width, height) {
			if (this.view === null) {
				this.view = {
					enabled: true,
					fullWidth: 1,
					fullHeight: 1,
					offsetX: 0,
					offsetY: 0,
					width: 1,
					height: 1
				};
			}

			this.view.enabled = true;
			this.view.fullWidth = fullWidth;
			this.view.fullHeight = fullHeight;
			this.view.offsetX = x;
			this.view.offsetY = y;
			this.view.width = width;
			this.view.height = height;
			this.updateProjectionMatrix();
		}

		clearViewOffset() {
			if (this.view !== null) {
				this.view.enabled = false;
			}

			this.updateProjectionMatrix();
		}

		updateProjectionMatrix() {
			const dx = (this.right - this.left) / (2 * this.zoom);
			const dy = (this.top - this.bottom) / (2 * this.zoom);
			const cx = (this.right + this.left) / 2;
			const cy = (this.top + this.bottom) / 2;
			let left = cx - dx;
			let right = cx + dx;
			let top = cy + dy;
			let bottom = cy - dy;

			if (this.view !== null && this.view.enabled) {
				const scaleW = (this.right - this.left) / this.view.fullWidth / this.zoom;
				const scaleH = (this.top - this.bottom) / this.view.fullHeight / this.zoom;
				left += scaleW * this.view.offsetX;
				right = left + scaleW * this.view.width;
				top -= scaleH * this.view.offsetY;
				bottom = top - scaleH * this.view.height;
			}

			this.projectionMatrix.makeOrthographic(left, right, top, bottom, this.near, this.far);
			this.projectionMatrixInverse.copy(this.projectionMatrix).invert();
		}

		toJSON(meta) {
			const data = super.toJSON(meta);
			data.object.zoom = this.zoom;
			data.object.left = this.left;
			data.object.right = this.right;
			data.object.top = this.top;
			data.object.bottom = this.bottom;
			data.object.near = this.near;
			data.object.far = this.far;
			if (this.view !== null) data.object.view = Object.assign({}, this.view);
			return data;
		}

	}

	OrthographicCamera.prototype.isOrthographicCamera = true;

	class RawShaderMaterial extends ShaderMaterial {
		constructor(parameters) {
			super(parameters);
			this.type = 'RawShaderMaterial';
		}

	}

	RawShaderMaterial.prototype.isRawShaderMaterial = true;

	const LOD_MIN = 4;
	const LOD_MAX = 8;
	const SIZE_MAX = Math.pow(2, LOD_MAX); // The standard deviations (radians) associated with the extra mips. These are
	// chosen to approximate a Trowbridge-Reitz distribution function times the
	// geometric shadowing function. These sigma values squared must match the
	// variance #defines in cube_uv_reflection_fragment.glsl.js.

	const EXTRA_LOD_SIGMA = [0.125, 0.215, 0.35, 0.446, 0.526, 0.582];
	const TOTAL_LODS = LOD_MAX - LOD_MIN + 1 + EXTRA_LOD_SIGMA.length; // The maximum length of the blur for loop. Smaller sigmas will use fewer
	// samples and exit early, but not recompile the shader.

	const MAX_SAMPLES = 20;
	const ENCODINGS = {
		[LinearEncoding]: 0,
		[sRGBEncoding]: 1,
		[RGBEEncoding]: 2,
		[RGBM7Encoding]: 3,
		[RGBM16Encoding]: 4,
		[RGBDEncoding]: 5,
		[GammaEncoding]: 6
	};

	const _flatCamera = /*@__PURE__*/new OrthographicCamera();

	const {
		_lodPlanes,
		_sizeLods,
		_sigmas
	} = /*@__PURE__*/_createPlanes();

	const _clearColor = /*@__PURE__*/new Color();

	let _oldTarget = null; // Golden Ratio

	const PHI = (1 + Math.sqrt(5)) / 2;
	const INV_PHI = 1 / PHI; // Vertices of a dodecahedron (except the opposites, which represent the
	// same axis), used as axis directions evenly spread on a sphere.

	const _axisDirections = [/*@__PURE__*/new Vector3(1, 1, 1), /*@__PURE__*/new Vector3(-1, 1, 1), /*@__PURE__*/new Vector3(1, 1, -1), /*@__PURE__*/new Vector3(-1, 1, -1), /*@__PURE__*/new Vector3(0, PHI, INV_PHI), /*@__PURE__*/new Vector3(0, PHI, -INV_PHI), /*@__PURE__*/new Vector3(INV_PHI, 0, PHI), /*@__PURE__*/new Vector3(-INV_PHI, 0, PHI), /*@__PURE__*/new Vector3(PHI, INV_PHI, 0), /*@__PURE__*/new Vector3(-PHI, INV_PHI, 0)];
	/**
	 * This class generates a Prefiltered, Mipmapped Radiance Environment Map
	 * (PMREM) from a cubeMap environment texture. This allows different levels of
	 * blur to be quickly accessed based on material roughness. It is packed into a
	 * special CubeUV format that allows us to perform custom interpolation so that
	 * we can support nonlinear formats such as RGBE. Unlike a traditional mipmap
	 * chain, it only goes down to the LOD_MIN level (above), and then creates extra
	 * even more filtered 'mips' at the same LOD_MIN resolution, associated with
	 * higher roughness levels. In this way we maintain resolution to smoothly
	 * interpolate diffuse lighting while limiting sampling computation.
	 *
	 * Paper: Fast, Accurate Image-Based Lighting
	 * https://drive.google.com/file/d/15y8r_UpKlU9SvV4ILb0C3qCPecS8pvLz/view
	*/

	class PMREMGenerator {
		constructor(renderer) {
			this._renderer = renderer;
			this._pingPongRenderTarget = null;
			this._blurMaterial = _getBlurShader(MAX_SAMPLES);
			this._equirectShader = null;
			this._cubemapShader = null;

			this._compileMaterial(this._blurMaterial);
		}
		/**
		 * Generates a PMREM from a supplied Scene, which can be faster than using an
		 * image if networking bandwidth is low. Optional sigma specifies a blur radius
		 * in radians to be applied to the scene before PMREM generation. Optional near
		 * and far planes ensure the scene is rendered in its entirety (the cubeCamera
		 * is placed at the origin).
		 */


		fromScene(scene, sigma = 0, near = 0.1, far = 100) {
			_oldTarget = this._renderer.getRenderTarget();

			const cubeUVRenderTarget = this._allocateTargets();

			this._sceneToCubeUV(scene, near, far, cubeUVRenderTarget);

			if (sigma > 0) {
				this._blur(cubeUVRenderTarget, 0, 0, sigma);
			}

			this._applyPMREM(cubeUVRenderTarget);

			this._cleanup(cubeUVRenderTarget);

			return cubeUVRenderTarget;
		}
		/**
		 * Generates a PMREM from an equirectangular texture, which can be either LDR
		 * (RGBFormat) or HDR (RGBEFormat). The ideal input image size is 1k (1024 x 512),
		 * as this matches best with the 256 x 256 cubemap output.
		 */


		fromEquirectangular(equirectangular) {
			return this._fromTexture(equirectangular);
		}
		/**
		 * Generates a PMREM from an cubemap texture, which can be either LDR
		 * (RGBFormat) or HDR (RGBEFormat). The ideal input cube size is 256 x 256,
		 * as this matches best with the 256 x 256 cubemap output.
		 */


		fromCubemap(cubemap) {
			return this._fromTexture(cubemap);
		}
		/**
		 * Pre-compiles the cubemap shader. You can get faster start-up by invoking this method during
		 * your texture's network fetch for increased concurrency.
		 */


		compileCubemapShader() {
			if (this._cubemapShader === null) {
				this._cubemapShader = _getCubemapShader();

				this._compileMaterial(this._cubemapShader);
			}
		}
		/**
		 * Pre-compiles the equirectangular shader. You can get faster start-up by invoking this method during
		 * your texture's network fetch for increased concurrency.
		 */


		compileEquirectangularShader() {
			if (this._equirectShader === null) {
				this._equirectShader = _getEquirectShader();

				this._compileMaterial(this._equirectShader);
			}
		}
		/**
		 * Disposes of the PMREMGenerator's internal memory. Note that PMREMGenerator is a static class,
		 * so you should not need more than one PMREMGenerator object. If you do, calling dispose() on
		 * one of them will cause any others to also become unusable.
		 */


		dispose() {
			this._blurMaterial.dispose();

			if (this._cubemapShader !== null) this._cubemapShader.dispose();
			if (this._equirectShader !== null) this._equirectShader.dispose();

			for (let i = 0; i < _lodPlanes.length; i++) {
				_lodPlanes[i].dispose();
			}
		} // private interface


		_cleanup(outputTarget) {
			this._pingPongRenderTarget.dispose();

			this._renderer.setRenderTarget(_oldTarget);

			outputTarget.scissorTest = false;

			_setViewport(outputTarget, 0, 0, outputTarget.width, outputTarget.height);
		}

		_fromTexture(texture) {
			_oldTarget = this._renderer.getRenderTarget();

			const cubeUVRenderTarget = this._allocateTargets(texture);

			this._textureToCubeUV(texture, cubeUVRenderTarget);

			this._applyPMREM(cubeUVRenderTarget);

			this._cleanup(cubeUVRenderTarget);

			return cubeUVRenderTarget;
		}

		_allocateTargets(texture) {
			// warning: null texture is valid
			const params = {
				magFilter: NearestFilter,
				minFilter: NearestFilter,
				generateMipmaps: false,
				type: UnsignedByteType,
				format: RGBEFormat,
				encoding: _isLDR(texture) ? texture.encoding : RGBEEncoding,
				depthBuffer: false
			};

			const cubeUVRenderTarget = _createRenderTarget(params);

			cubeUVRenderTarget.depthBuffer = texture ? false : true;
			this._pingPongRenderTarget = _createRenderTarget(params);
			return cubeUVRenderTarget;
		}

		_compileMaterial(material) {
			const tmpMesh = new Mesh(_lodPlanes[0], material);

			this._renderer.compile(tmpMesh, _flatCamera);
		}

		_sceneToCubeUV(scene, near, far, cubeUVRenderTarget) {
			const fov = 90;
			const aspect = 1;
			const cubeCamera = new PerspectiveCamera(fov, aspect, near, far);
			const upSign = [1, -1, 1, 1, 1, 1];
			const forwardSign = [1, 1, 1, -1, -1, -1];
			const renderer = this._renderer;
			const originalAutoClear = renderer.autoClear;
			const outputEncoding = renderer.outputEncoding;
			const toneMapping = renderer.toneMapping;
			renderer.getClearColor(_clearColor);
			renderer.toneMapping = NoToneMapping;
			renderer.outputEncoding = LinearEncoding;
			renderer.autoClear = false;
			const backgroundMaterial = new MeshBasicMaterial({
				name: 'PMREM.Background',
				side: BackSide,
				depthWrite: false,
				depthTest: false
			});
			const backgroundBox = new Mesh(new BoxGeometry(), backgroundMaterial);
			let useSolidColor = false;
			const background = scene.background;

			if (background) {
				if (background.isColor) {
					backgroundMaterial.color.copy(background);
					scene.background = null;
					useSolidColor = true;
				}
			} else {
				backgroundMaterial.color.copy(_clearColor);
				useSolidColor = true;
			}

			for (let i = 0; i < 6; i++) {
				const col = i % 3;

				if (col == 0) {
					cubeCamera.up.set(0, upSign[i], 0);
					cubeCamera.lookAt(forwardSign[i], 0, 0);
				} else if (col == 1) {
					cubeCamera.up.set(0, 0, upSign[i]);
					cubeCamera.lookAt(0, forwardSign[i], 0);
				} else {
					cubeCamera.up.set(0, upSign[i], 0);
					cubeCamera.lookAt(0, 0, forwardSign[i]);
				}

				_setViewport(cubeUVRenderTarget, col * SIZE_MAX, i > 2 ? SIZE_MAX : 0, SIZE_MAX, SIZE_MAX);

				renderer.setRenderTarget(cubeUVRenderTarget);

				if (useSolidColor) {
					renderer.render(backgroundBox, cubeCamera);
				}

				renderer.render(scene, cubeCamera);
			}

			backgroundBox.geometry.dispose();
			backgroundBox.material.dispose();
			renderer.toneMapping = toneMapping;
			renderer.outputEncoding = outputEncoding;
			renderer.autoClear = originalAutoClear;
			scene.background = background;
		}

		_setEncoding(uniform, texture) {
			if (this._renderer.capabilities.isWebGL2 === true && texture.format === RGBAFormat && texture.type === UnsignedByteType && texture.encoding === sRGBEncoding) {
				uniform.value = ENCODINGS[LinearEncoding];
			} else {
				uniform.value = ENCODINGS[texture.encoding];
			}
		}

		_textureToCubeUV(texture, cubeUVRenderTarget) {
			const renderer = this._renderer;

			if (texture.isCubeTexture) {
				if (this._cubemapShader == null) {
					this._cubemapShader = _getCubemapShader();
				}
			} else {
				if (this._equirectShader == null) {
					this._equirectShader = _getEquirectShader();
				}
			}

			const material = texture.isCubeTexture ? this._cubemapShader : this._equirectShader;
			const mesh = new Mesh(_lodPlanes[0], material);
			const uniforms = material.uniforms;
			uniforms['envMap'].value = texture;

			if (!texture.isCubeTexture) {
				uniforms['texelSize'].value.set(1.0 / texture.image.width, 1.0 / texture.image.height);
			}

			this._setEncoding(uniforms['inputEncoding'], texture);

			this._setEncoding(uniforms['outputEncoding'], cubeUVRenderTarget.texture);

			_setViewport(cubeUVRenderTarget, 0, 0, 3 * SIZE_MAX, 2 * SIZE_MAX);

			renderer.setRenderTarget(cubeUVRenderTarget);
			renderer.render(mesh, _flatCamera);
		}

		_applyPMREM(cubeUVRenderTarget) {
			const renderer = this._renderer;
			const autoClear = renderer.autoClear;
			renderer.autoClear = false;

			for (let i = 1; i < TOTAL_LODS; i++) {
				const sigma = Math.sqrt(_sigmas[i] * _sigmas[i] - _sigmas[i - 1] * _sigmas[i - 1]);
				const poleAxis = _axisDirections[(i - 1) % _axisDirections.length];

				this._blur(cubeUVRenderTarget, i - 1, i, sigma, poleAxis);
			}

			renderer.autoClear = autoClear;
		}
		/**
		 * This is a two-pass Gaussian blur for a cubemap. Normally this is done
		 * vertically and horizontally, but this breaks down on a cube. Here we apply
		 * the blur latitudinally (around the poles), and then longitudinally (towards
		 * the poles) to approximate the orthogonally-separable blur. It is least
		 * accurate at the poles, but still does a decent job.
		 */


		_blur(cubeUVRenderTarget, lodIn, lodOut, sigma, poleAxis) {
			const pingPongRenderTarget = this._pingPongRenderTarget;

			this._halfBlur(cubeUVRenderTarget, pingPongRenderTarget, lodIn, lodOut, sigma, 'latitudinal', poleAxis);

			this._halfBlur(pingPongRenderTarget, cubeUVRenderTarget, lodOut, lodOut, sigma, 'longitudinal', poleAxis);
		}

		_halfBlur(targetIn, targetOut, lodIn, lodOut, sigmaRadians, direction, poleAxis) {
			const renderer = this._renderer;
			const blurMaterial = this._blurMaterial;

			if (direction !== 'latitudinal' && direction !== 'longitudinal') {
				console.error('blur direction must be either latitudinal or longitudinal!');
			} // Number of standard deviations at which to cut off the discrete approximation.


			const STANDARD_DEVIATIONS = 3;
			const blurMesh = new Mesh(_lodPlanes[lodOut], blurMaterial);
			const blurUniforms = blurMaterial.uniforms;
			const pixels = _sizeLods[lodIn] - 1;
			const radiansPerPixel = isFinite(sigmaRadians) ? Math.PI / (2 * pixels) : 2 * Math.PI / (2 * MAX_SAMPLES - 1);
			const sigmaPixels = sigmaRadians / radiansPerPixel;
			const samples = isFinite(sigmaRadians) ? 1 + Math.floor(STANDARD_DEVIATIONS * sigmaPixels) : MAX_SAMPLES;

			if (samples > MAX_SAMPLES) {
				console.warn(`sigmaRadians, ${sigmaRadians}, is too large and will clip, as it requested ${samples} samples when the maximum is set to ${MAX_SAMPLES}`);
			}

			const weights = [];
			let sum = 0;

			for (let i = 0; i < MAX_SAMPLES; ++i) {
				const x = i / sigmaPixels;
				const weight = Math.exp(-x * x / 2);
				weights.push(weight);

				if (i == 0) {
					sum += weight;
				} else if (i < samples) {
					sum += 2 * weight;
				}
			}

			for (let i = 0; i < weights.length; i++) {
				weights[i] = weights[i] / sum;
			}

			blurUniforms['envMap'].value = targetIn.texture;
			blurUniforms['samples'].value = samples;
			blurUniforms['weights'].value = weights;
			blurUniforms['latitudinal'].value = direction === 'latitudinal';

			if (poleAxis) {
				blurUniforms['poleAxis'].value = poleAxis;
			}

			blurUniforms['dTheta'].value = radiansPerPixel;
			blurUniforms['mipInt'].value = LOD_MAX - lodIn;

			this._setEncoding(blurUniforms['inputEncoding'], targetIn.texture);

			this._setEncoding(blurUniforms['outputEncoding'], targetIn.texture);

			const outputSize = _sizeLods[lodOut];
			const x = 3 * Math.max(0, SIZE_MAX - 2 * outputSize);
			const y = (lodOut === 0 ? 0 : 2 * SIZE_MAX) + 2 * outputSize * (lodOut > LOD_MAX - LOD_MIN ? lodOut - LOD_MAX + LOD_MIN : 0);

			_setViewport(targetOut, x, y, 3 * outputSize, 2 * outputSize);

			renderer.setRenderTarget(targetOut);
			renderer.render(blurMesh, _flatCamera);
		}

	}

	function _isLDR(texture) {
		if (texture === undefined || texture.type !== UnsignedByteType) return false;
		return texture.encoding === LinearEncoding || texture.encoding === sRGBEncoding || texture.encoding === GammaEncoding;
	}

	function _createPlanes() {
		const _lodPlanes = [];
		const _sizeLods = [];
		const _sigmas = [];
		let lod = LOD_MAX;

		for (let i = 0; i < TOTAL_LODS; i++) {
			const sizeLod = Math.pow(2, lod);

			_sizeLods.push(sizeLod);

			let sigma = 1.0 / sizeLod;

			if (i > LOD_MAX - LOD_MIN) {
				sigma = EXTRA_LOD_SIGMA[i - LOD_MAX + LOD_MIN - 1];
			} else if (i == 0) {
				sigma = 0;
			}

			_sigmas.push(sigma);

			const texelSize = 1.0 / (sizeLod - 1);
			const min = -texelSize / 2;
			const max = 1 + texelSize / 2;
			const uv1 = [min, min, max, min, max, max, min, min, max, max, min, max];
			const cubeFaces = 6;
			const vertices = 6;
			const positionSize = 3;
			const uvSize = 2;
			const faceIndexSize = 1;
			const position = new Float32Array(positionSize * vertices * cubeFaces);
			const uv = new Float32Array(uvSize * vertices * cubeFaces);
			const faceIndex = new Float32Array(faceIndexSize * vertices * cubeFaces);

			for (let face = 0; face < cubeFaces; face++) {
				const x = face % 3 * 2 / 3 - 1;
				const y = face > 2 ? 0 : -1;
				const coordinates = [x, y, 0, x + 2 / 3, y, 0, x + 2 / 3, y + 1, 0, x, y, 0, x + 2 / 3, y + 1, 0, x, y + 1, 0];
				position.set(coordinates, positionSize * vertices * face);
				uv.set(uv1, uvSize * vertices * face);
				const fill = [face, face, face, face, face, face];
				faceIndex.set(fill, faceIndexSize * vertices * face);
			}

			const planes = new BufferGeometry();
			planes.setAttribute('position', new BufferAttribute(position, positionSize));
			planes.setAttribute('uv', new BufferAttribute(uv, uvSize));
			planes.setAttribute('faceIndex', new BufferAttribute(faceIndex, faceIndexSize));

			_lodPlanes.push(planes);

			if (lod > LOD_MIN) {
				lod--;
			}
		}

		return {
			_lodPlanes,
			_sizeLods,
			_sigmas
		};
	}

	function _createRenderTarget(params) {
		const cubeUVRenderTarget = new WebGLRenderTarget(3 * SIZE_MAX, 3 * SIZE_MAX, params);
		cubeUVRenderTarget.texture.mapping = CubeUVReflectionMapping;
		cubeUVRenderTarget.texture.name = 'PMREM.cubeUv';
		cubeUVRenderTarget.scissorTest = true;
		return cubeUVRenderTarget;
	}

	function _setViewport(target, x, y, width, height) {
		target.viewport.set(x, y, width, height);
		target.scissor.set(x, y, width, height);
	}

	function _getBlurShader(maxSamples) {
		const weights = new Float32Array(maxSamples);
		const poleAxis = new Vector3(0, 1, 0);
		const shaderMaterial = new RawShaderMaterial({
			name: 'SphericalGaussianBlur',
			defines: {
				'n': maxSamples
			},
			uniforms: {
				'envMap': {
					value: null
				},
				'samples': {
					value: 1
				},
				'weights': {
					value: weights
				},
				'latitudinal': {
					value: false
				},
				'dTheta': {
					value: 0
				},
				'mipInt': {
					value: 0
				},
				'poleAxis': {
					value: poleAxis
				},
				'inputEncoding': {
					value: ENCODINGS[LinearEncoding]
				},
				'outputEncoding': {
					value: ENCODINGS[LinearEncoding]
				}
			},
			vertexShader: _getCommonVertexShader(),
			fragmentShader:
			/* glsl */
			`

			precision mediump float;
			precision mediump int;

			varying vec3 vOutputDirection;

			uniform sampler2D envMap;
			uniform int samples;
			uniform float weights[ n ];
			uniform bool latitudinal;
			uniform float dTheta;
			uniform float mipInt;
			uniform vec3 poleAxis;

			${_getEncodings()}

			#define ENVMAP_TYPE_CUBE_UV
			#include <cube_uv_reflection_fragment>

			vec3 getSample( float theta, vec3 axis ) {

				float cosTheta = cos( theta );
				// Rodrigues' axis-angle rotation
				vec3 sampleDirection = vOutputDirection * cosTheta
					+ cross( axis, vOutputDirection ) * sin( theta )
					+ axis * dot( axis, vOutputDirection ) * ( 1.0 - cosTheta );

				return bilinearCubeUV( envMap, sampleDirection, mipInt );

			}

			void main() {

				vec3 axis = latitudinal ? poleAxis : cross( poleAxis, vOutputDirection );

				if ( all( equal( axis, vec3( 0.0 ) ) ) ) {

					axis = vec3( vOutputDirection.z, 0.0, - vOutputDirection.x );

				}

				axis = normalize( axis );

				gl_FragColor = vec4( 0.0, 0.0, 0.0, 1.0 );
				gl_FragColor.rgb += weights[ 0 ] * getSample( 0.0, axis );

				for ( int i = 1; i < n; i++ ) {

					if ( i >= samples ) {

						break;

					}

					float theta = dTheta * float( i );
					gl_FragColor.rgb += weights[ i ] * getSample( -1.0 * theta, axis );
					gl_FragColor.rgb += weights[ i ] * getSample( theta, axis );

				}

				gl_FragColor = linearToOutputTexel( gl_FragColor );

			}
		`,
			blending: NoBlending,
			depthTest: false,
			depthWrite: false
		});
		return shaderMaterial;
	}

	function _getEquirectShader() {
		const texelSize = new Vector2(1, 1);
		const shaderMaterial = new RawShaderMaterial({
			name: 'EquirectangularToCubeUV',
			uniforms: {
				'envMap': {
					value: null
				},
				'texelSize': {
					value: texelSize
				},
				'inputEncoding': {
					value: ENCODINGS[LinearEncoding]
				},
				'outputEncoding': {
					value: ENCODINGS[LinearEncoding]
				}
			},
			vertexShader: _getCommonVertexShader(),
			fragmentShader:
			/* glsl */
			`

			precision mediump float;
			precision mediump int;

			varying vec3 vOutputDirection;

			uniform sampler2D envMap;
			uniform vec2 texelSize;

			${_getEncodings()}

			#include <common>

			void main() {

				gl_FragColor = vec4( 0.0, 0.0, 0.0, 1.0 );

				vec3 outputDirection = normalize( vOutputDirection );
				vec2 uv = equirectUv( outputDirection );

				vec2 f = fract( uv / texelSize - 0.5 );
				uv -= f * texelSize;
				vec3 tl = envMapTexelToLinear( texture2D ( envMap, uv ) ).rgb;
				uv.x += texelSize.x;
				vec3 tr = envMapTexelToLinear( texture2D ( envMap, uv ) ).rgb;
				uv.y += texelSize.y;
				vec3 br = envMapTexelToLinear( texture2D ( envMap, uv ) ).rgb;
				uv.x -= texelSize.x;
				vec3 bl = envMapTexelToLinear( texture2D ( envMap, uv ) ).rgb;

				vec3 tm = mix( tl, tr, f.x );
				vec3 bm = mix( bl, br, f.x );
				gl_FragColor.rgb = mix( tm, bm, f.y );

				gl_FragColor = linearToOutputTexel( gl_FragColor );

			}
		`,
			blending: NoBlending,
			depthTest: false,
			depthWrite: false
		});
		return shaderMaterial;
	}

	function _getCubemapShader() {
		const shaderMaterial = new RawShaderMaterial({
			name: 'CubemapToCubeUV',
			uniforms: {
				'envMap': {
					value: null
				},
				'inputEncoding': {
					value: ENCODINGS[LinearEncoding]
				},
				'outputEncoding': {
					value: ENCODINGS[LinearEncoding]
				}
			},
			vertexShader: _getCommonVertexShader(),
			fragmentShader:
			/* glsl */
			`

			precision mediump float;
			precision mediump int;

			varying vec3 vOutputDirection;

			uniform samplerCube envMap;

			${_getEncodings()}

			void main() {

				gl_FragColor = vec4( 0.0, 0.0, 0.0, 1.0 );
				gl_FragColor.rgb = envMapTexelToLinear( textureCube( envMap, vec3( - vOutputDirection.x, vOutputDirection.yz ) ) ).rgb;
				gl_FragColor = linearToOutputTexel( gl_FragColor );

			}
		`,
			blending: NoBlending,
			depthTest: false,
			depthWrite: false
		});
		return shaderMaterial;
	}

	function _getCommonVertexShader() {
		return (
			/* glsl */
			`

		precision mediump float;
		precision mediump int;

		attribute vec3 position;
		attribute vec2 uv;
		attribute float faceIndex;

		varying vec3 vOutputDirection;

		// RH coordinate system; PMREM face-indexing convention
		vec3 getDirection( vec2 uv, float face ) {

			uv = 2.0 * uv - 1.0;

			vec3 direction = vec3( uv, 1.0 );

			if ( face == 0.0 ) {

				direction = direction.zyx; // ( 1, v, u ) pos x

			} else if ( face == 1.0 ) {

				direction = direction.xzy;
				direction.xz *= -1.0; // ( -u, 1, -v ) pos y

			} else if ( face == 2.0 ) {

				direction.x *= -1.0; // ( -u, v, 1 ) pos z

			} else if ( face == 3.0 ) {

				direction = direction.zyx;
				direction.xz *= -1.0; // ( -1, v, -u ) neg x

			} else if ( face == 4.0 ) {

				direction = direction.xzy;
				direction.xy *= -1.0; // ( -u, -1, v ) neg y

			} else if ( face == 5.0 ) {

				direction.z *= -1.0; // ( u, v, -1 ) neg z

			}

			return direction;

		}

		void main() {

			vOutputDirection = getDirection( uv, faceIndex );
			gl_Position = vec4( position, 1.0 );

		}
	`
		);
	}

	function _getEncodings() {
		return (
			/* glsl */
			`

		uniform int inputEncoding;
		uniform int outputEncoding;

		#include <encodings_pars_fragment>

		vec4 inputTexelToLinear( vec4 value ) {

			if ( inputEncoding == 0 ) {

				return value;

			} else if ( inputEncoding == 1 ) {

				return sRGBToLinear( value );

			} else if ( inputEncoding == 2 ) {

				return RGBEToLinear( value );

			} else if ( inputEncoding == 3 ) {

				return RGBMToLinear( value, 7.0 );

			} else if ( inputEncoding == 4 ) {

				return RGBMToLinear( value, 16.0 );

			} else if ( inputEncoding == 5 ) {

				return RGBDToLinear( value, 256.0 );

			} else {

				return GammaToLinear( value, 2.2 );

			}

		}

		vec4 linearToOutputTexel( vec4 value ) {

			if ( outputEncoding == 0 ) {

				return value;

			} else if ( outputEncoding == 1 ) {

				return LinearTosRGB( value );

			} else if ( outputEncoding == 2 ) {

				return LinearToRGBE( value );

			} else if ( outputEncoding == 3 ) {

				return LinearToRGBM( value, 7.0 );

			} else if ( outputEncoding == 4 ) {

				return LinearToRGBM( value, 16.0 );

			} else if ( outputEncoding == 5 ) {

				return LinearToRGBD( value, 256.0 );

			} else {

				return LinearToGamma( value, 2.2 );

			}

		}

		vec4 envMapTexelToLinear( vec4 color ) {

			return inputTexelToLinear( color );

		}
	`
		);
	}

	function WebGLCubeUVMaps(renderer) {
		let cubeUVmaps = new WeakMap();
		let pmremGenerator = null;

		function get(texture) {
			if (texture && texture.isTexture && texture.isRenderTargetTexture === false) {
				const mapping = texture.mapping;
				const isEquirectMap = mapping === EquirectangularReflectionMapping || mapping === EquirectangularRefractionMapping;
				const isCubeMap = mapping === CubeReflectionMapping || mapping === CubeRefractionMapping;

				if (isEquirectMap || isCubeMap) {
					// equirect/cube map to cubeUV conversion
					if (cubeUVmaps.has(texture)) {
						return cubeUVmaps.get(texture).texture;
					} else {
						const image = texture.image;

						if (isEquirectMap && image && image.height > 0 || isCubeMap && image && isCubeTextureComplete(image)) {
							const currentRenderTarget = renderer.getRenderTarget();
							if (pmremGenerator === null) pmremGenerator = new PMREMGenerator(renderer);
							const renderTarget = isEquirectMap ? pmremGenerator.fromEquirectangular(texture) : pmremGenerator.fromCubemap(texture);
							cubeUVmaps.set(texture, renderTarget);
							renderer.setRenderTarget(currentRenderTarget);
							texture.addEventListener('dispose', onTextureDispose);
							return renderTarget.texture;
						} else {
							// image not yet ready. try the conversion next frame
							return null;
						}
					}
				}
			}

			return texture;
		}

		function isCubeTextureComplete(image) {
			let count = 0;
			const length = 6;

			for (let i = 0; i < length; i++) {
				if (image[i] !== undefined) count++;
			}

			return count === length;
		}

		function onTextureDispose(event) {
			const texture = event.target;
			texture.removeEventListener('dispose', onTextureDispose);
			const cubemapUV = cubeUVmaps.get(texture);

			if (cubemapUV !== undefined) {
				cubeUVmaps.delete(texture);
				cubemapUV.dispose();
			}
		}

		function dispose() {
			cubeUVmaps = new WeakMap();

			if (pmremGenerator !== null) {
				pmremGenerator.dispose();
				pmremGenerator = null;
			}
		}

		return {
			get: get,
			dispose: dispose
		};
	}

	function WebGLExtensions(gl) {
		const extensions = {};

		function getExtension(name) {
			if (extensions[name] !== undefined) {
				return extensions[name];
			}

			let extension;

			switch (name) {
				case 'WEBGL_depth_texture':
					extension = gl.getExtension('WEBGL_depth_texture') || gl.getExtension('MOZ_WEBGL_depth_texture') || gl.getExtension('WEBKIT_WEBGL_depth_texture');
					break;

				case 'EXT_texture_filter_anisotropic':
					extension = gl.getExtension('EXT_texture_filter_anisotropic') || gl.getExtension('MOZ_EXT_texture_filter_anisotropic') || gl.getExtension('WEBKIT_EXT_texture_filter_anisotropic');
					break;

				case 'WEBGL_compressed_texture_s3tc':
					extension = gl.getExtension('WEBGL_compressed_texture_s3tc') || gl.getExtension('MOZ_WEBGL_compressed_texture_s3tc') || gl.getExtension('WEBKIT_WEBGL_compressed_texture_s3tc');
					break;

				case 'WEBGL_compressed_texture_pvrtc':
					extension = gl.getExtension('WEBGL_compressed_texture_pvrtc') || gl.getExtension('WEBKIT_WEBGL_compressed_texture_pvrtc');
					break;

				default:
					extension = gl.getExtension(name);
			}

			extensions[name] = extension;
			return extension;
		}

		return {
			has: function (name) {
				return getExtension(name) !== null;
			},
			init: function (capabilities) {
				if (capabilities.isWebGL2) {
					getExtension('EXT_color_buffer_float');
				} else {
					getExtension('WEBGL_depth_texture');
					getExtension('OES_texture_float');
					getExtension('OES_texture_half_float');
					getExtension('OES_texture_half_float_linear');
					getExtension('OES_standard_derivatives');
					getExtension('OES_element_index_uint');
					getExtension('OES_vertex_array_object');
					getExtension('ANGLE_instanced_arrays');
				}

				getExtension('OES_texture_float_linear');
				getExtension('EXT_color_buffer_half_float');
			},
			get: function (name) {
				const extension = getExtension(name);

				if (extension === null) {
					console.warn('THREE.WebGLRenderer: ' + name + ' extension not supported.');
				}

				return extension;
			}
		};
	}

	function WebGLGeometries(gl, attributes, info, bindingStates) {
		const geometries = {};
		const wireframeAttributes = new WeakMap();

		function onGeometryDispose(event) {
			const geometry = event.target;

			if (geometry.index !== null) {
				attributes.remove(geometry.index);
			}

			for (const name in geometry.attributes) {
				attributes.remove(geometry.attributes[name]);
			}

			geometry.removeEventListener('dispose', onGeometryDispose);
			delete geometries[geometry.id];
			const attribute = wireframeAttributes.get(geometry);

			if (attribute) {
				attributes.remove(attribute);
				wireframeAttributes.delete(geometry);
			}

			bindingStates.releaseStatesOfGeometry(geometry);

			if (geometry.isInstancedBufferGeometry === true) {
				delete geometry._maxInstanceCount;
			} //


			info.memory.geometries--;
		}

		function get(object, geometry) {
			if (geometries[geometry.id] === true) return geometry;
			geometry.addEventListener('dispose', onGeometryDispose);
			geometries[geometry.id] = true;
			info.memory.geometries++;
			return geometry;
		}

		function update(geometry) {
			const geometryAttributes = geometry.attributes; // Updating index buffer in VAO now. See WebGLBindingStates.

			for (const name in geometryAttributes) {
				attributes.update(geometryAttributes[name], gl.ARRAY_BUFFER);
			} // morph targets


			const morphAttributes = geometry.morphAttributes;

			for (const name in morphAttributes) {
				const array = morphAttributes[name];

				for (let i = 0, l = array.length; i < l; i++) {
					attributes.update(array[i], gl.ARRAY_BUFFER);
				}
			}
		}

		function updateWireframeAttribute(geometry) {
			const indices = [];
			const geometryIndex = geometry.index;
			const geometryPosition = geometry.attributes.position;
			let version = 0;

			if (geometryIndex !== null) {
				const array = geometryIndex.array;
				version = geometryIndex.version;

				for (let i = 0, l = array.length; i < l; i += 3) {
					const a = array[i + 0];
					const b = array[i + 1];
					const c = array[i + 2];
					indices.push(a, b, b, c, c, a);
				}
			} else {
				const array = geometryPosition.array;
				version = geometryPosition.version;

				for (let i = 0, l = array.length / 3 - 1; i < l; i += 3) {
					const a = i + 0;
					const b = i + 1;
					const c = i + 2;
					indices.push(a, b, b, c, c, a);
				}
			}

			const attribute = new (arrayMax(indices) > 65535 ? Uint32BufferAttribute : Uint16BufferAttribute)(indices, 1);
			attribute.version = version; // Updating index buffer in VAO now. See WebGLBindingStates
			//

			const previousAttribute = wireframeAttributes.get(geometry);
			if (previousAttribute) attributes.remove(previousAttribute); //

			wireframeAttributes.set(geometry, attribute);
		}

		function getWireframeAttribute(geometry) {
			const currentAttribute = wireframeAttributes.get(geometry);

			if (currentAttribute) {
				const geometryIndex = geometry.index;

				if (geometryIndex !== null) {
					// if the attribute is obsolete, create a new one
					if (currentAttribute.version < geometryIndex.version) {
						updateWireframeAttribute(geometry);
					}
				}
			} else {
				updateWireframeAttribute(geometry);
			}

			return wireframeAttributes.get(geometry);
		}

		return {
			get: get,
			update: update,
			getWireframeAttribute: getWireframeAttribute
		};
	}

	function WebGLIndexedBufferRenderer(gl, extensions, info, capabilities) {
		const isWebGL2 = capabilities.isWebGL2;
		let mode;

		function setMode(value) {
			mode = value;
		}

		let type, bytesPerElement;

		function setIndex(value) {
			type = value.type;
			bytesPerElement = value.bytesPerElement;
		}

		function render(start, count) {
			gl.drawElements(mode, count, type, start * bytesPerElement);
			info.update(count, mode, 1);
		}

		function renderInstances(start, count, primcount) {
			if (primcount === 0) return;
			let extension, methodName;

			if (isWebGL2) {
				extension = gl;
				methodName = 'drawElementsInstanced';
			} else {
				extension = extensions.get('ANGLE_instanced_arrays');
				methodName = 'drawElementsInstancedANGLE';

				if (extension === null) {
					console.error('THREE.WebGLIndexedBufferRenderer: using THREE.InstancedBufferGeometry but hardware does not support extension ANGLE_instanced_arrays.');
					return;
				}
			}

			extension[methodName](mode, count, type, start * bytesPerElement, primcount);
			info.update(count, mode, primcount);
		} //


		this.setMode = setMode;
		this.setIndex = setIndex;
		this.render = render;
		this.renderInstances = renderInstances;
	}

	function WebGLInfo(gl) {
		const memory = {
			geometries: 0,
			textures: 0
		};
		const render = {
			frame: 0,
			calls: 0,
			triangles: 0,
			points: 0,
			lines: 0
		};

		function update(count, mode, instanceCount) {
			render.calls++;

			switch (mode) {
				case gl.TRIANGLES:
					render.triangles += instanceCount * (count / 3);
					break;

				case gl.LINES:
					render.lines += instanceCount * (count / 2);
					break;

				case gl.LINE_STRIP:
					render.lines += instanceCount * (count - 1);
					break;

				case gl.LINE_LOOP:
					render.lines += instanceCount * count;
					break;

				case gl.POINTS:
					render.points += instanceCount * count;
					break;

				default:
					console.error('THREE.WebGLInfo: Unknown draw mode:', mode);
					break;
			}
		}

		function reset() {
			render.frame++;
			render.calls = 0;
			render.triangles = 0;
			render.points = 0;
			render.lines = 0;
		}

		return {
			memory: memory,
			render: render,
			programs: null,
			autoReset: true,
			reset: reset,
			update: update
		};
	}

	class DataTexture2DArray extends Texture {
		constructor(data = null, width = 1, height = 1, depth = 1) {
			super(null);
			this.image = {
				data,
				width,
				height,
				depth
			};
			this.magFilter = NearestFilter;
			this.minFilter = NearestFilter;
			this.wrapR = ClampToEdgeWrapping;
			this.generateMipmaps = false;
			this.flipY = false;
			this.unpackAlignment = 1;
			this.needsUpdate = true;
		}

	}

	DataTexture2DArray.prototype.isDataTexture2DArray = true;

	function numericalSort(a, b) {
		return a[0] - b[0];
	}

	function absNumericalSort(a, b) {
		return Math.abs(b[1]) - Math.abs(a[1]);
	}

	function denormalize(morph, attribute) {
		let denominator = 1;
		const array = attribute.isInterleavedBufferAttribute ? attribute.data.array : attribute.array;
		if (array instanceof Int8Array) denominator = 127;else if (array instanceof Int16Array) denominator = 32767;else if (array instanceof Int32Array) denominator = 2147483647;else console.error('THREE.WebGLMorphtargets: Unsupported morph attribute data type: ', array);
		morph.divideScalar(denominator);
	}

	function WebGLMorphtargets(gl, capabilities, textures) {
		const influencesList = {};
		const morphInfluences = new Float32Array(8);
		const morphTextures = new WeakMap();
		const morph = new Vector3();
		const workInfluences = [];

		for (let i = 0; i < 8; i++) {
			workInfluences[i] = [i, 0];
		}

		function update(object, geometry, material, program) {
			const objectInfluences = object.morphTargetInfluences;

			if (capabilities.isWebGL2 === true) {
				// instead of using attributes, the WebGL 2 code path encodes morph targets
				// into an array of data textures. Each layer represents a single morph target.
				const numberOfMorphTargets = geometry.morphAttributes.position.length;
				let entry = morphTextures.get(geometry);

				if (entry === undefined || entry.count !== numberOfMorphTargets) {
					if (entry !== undefined) entry.texture.dispose();
					const hasMorphNormals = geometry.morphAttributes.normal !== undefined;
					const morphTargets = geometry.morphAttributes.position;
					const morphNormals = geometry.morphAttributes.normal || [];
					const numberOfVertices = geometry.attributes.position.count;
					const numberOfVertexData = hasMorphNormals === true ? 2 : 1; // (v,n) vs. (v)

					let width = numberOfVertices * numberOfVertexData;
					let height = 1;

					if (width > capabilities.maxTextureSize) {
						height = Math.ceil(width / capabilities.maxTextureSize);
						width = capabilities.maxTextureSize;
					}

					const buffer = new Float32Array(width * height * 4 * numberOfMorphTargets);
					const texture = new DataTexture2DArray(buffer, width, height, numberOfMorphTargets);
					texture.format = RGBAFormat; // using RGBA since RGB might be emulated (and is thus slower)

					texture.type = FloatType; // fill buffer

					const vertexDataStride = numberOfVertexData * 4;

					for (let i = 0; i < numberOfMorphTargets; i++) {
						const morphTarget = morphTargets[i];
						const morphNormal = morphNormals[i];
						const offset = width * height * 4 * i;

						for (let j = 0; j < morphTarget.count; j++) {
							morph.fromBufferAttribute(morphTarget, j);
							if (morphTarget.normalized === true) denormalize(morph, morphTarget);
							const stride = j * vertexDataStride;
							buffer[offset + stride + 0] = morph.x;
							buffer[offset + stride + 1] = morph.y;
							buffer[offset + stride + 2] = morph.z;
							buffer[offset + stride + 3] = 0;

							if (hasMorphNormals === true) {
								morph.fromBufferAttribute(morphNormal, j);
								if (morphNormal.normalized === true) denormalize(morph, morphNormal);
								buffer[offset + stride + 4] = morph.x;
								buffer[offset + stride + 5] = morph.y;
								buffer[offset + stride + 6] = morph.z;
								buffer[offset + stride + 7] = 0;
							}
						}
					}

					entry = {
						count: numberOfMorphTargets,
						texture: texture,
						size: new Vector2(width, height)
					};
					morphTextures.set(geometry, entry);
				} //


				let morphInfluencesSum = 0;

				for (let i = 0; i < objectInfluences.length; i++) {
					morphInfluencesSum += objectInfluences[i];
				}

				const morphBaseInfluence = geometry.morphTargetsRelative ? 1 : 1 - morphInfluencesSum;
				program.getUniforms().setValue(gl, 'morphTargetBaseInfluence', morphBaseInfluence);
				program.getUniforms().setValue(gl, 'morphTargetInfluences', objectInfluences);
				program.getUniforms().setValue(gl, 'morphTargetsTexture', entry.texture, textures);
				program.getUniforms().setValue(gl, 'morphTargetsTextureSize', entry.size);
			} else {
				// When object doesn't have morph target influences defined, we treat it as a 0-length array
				// This is important to make sure we set up morphTargetBaseInfluence / morphTargetInfluences
				const length = objectInfluences === undefined ? 0 : objectInfluences.length;
				let influences = influencesList[geometry.id];

				if (influences === undefined || influences.length !== length) {
					// initialise list
					influences = [];

					for (let i = 0; i < length; i++) {
						influences[i] = [i, 0];
					}

					influencesList[geometry.id] = influences;
				} // Collect influences


				for (let i = 0; i < length; i++) {
					const influence = influences[i];
					influence[0] = i;
					influence[1] = objectInfluences[i];
				}

				influences.sort(absNumericalSort);

				for (let i = 0; i < 8; i++) {
					if (i < length && influences[i][1]) {
						workInfluences[i][0] = influences[i][0];
						workInfluences[i][1] = influences[i][1];
					} else {
						workInfluences[i][0] = Number.MAX_SAFE_INTEGER;
						workInfluences[i][1] = 0;
					}
				}

				workInfluences.sort(numericalSort);
				const morphTargets = geometry.morphAttributes.position;
				const morphNormals = geometry.morphAttributes.normal;
				let morphInfluencesSum = 0;

				for (let i = 0; i < 8; i++) {
					const influence = workInfluences[i];
					const index = influence[0];
					const value = influence[1];

					if (index !== Number.MAX_SAFE_INTEGER && value) {
						if (morphTargets && geometry.getAttribute('morphTarget' + i) !== morphTargets[index]) {
							geometry.setAttribute('morphTarget' + i, morphTargets[index]);
						}

						if (morphNormals && geometry.getAttribute('morphNormal' + i) !== morphNormals[index]) {
							geometry.setAttribute('morphNormal' + i, morphNormals[index]);
						}

						morphInfluences[i] = value;
						morphInfluencesSum += value;
					} else {
						if (morphTargets && geometry.hasAttribute('morphTarget' + i) === true) {
							geometry.deleteAttribute('morphTarget' + i);
						}

						if (morphNormals && geometry.hasAttribute('morphNormal' + i) === true) {
							geometry.deleteAttribute('morphNormal' + i);
						}

						morphInfluences[i] = 0;
					}
				} // GLSL shader uses formula baseinfluence * base + sum(target * influence)
				// This allows us to switch between absolute morphs and relative morphs without changing shader code
				// When baseinfluence = 1 - sum(influence), the above is equivalent to sum((target - base) * influence)


				const morphBaseInfluence = geometry.morphTargetsRelative ? 1 : 1 - morphInfluencesSum;
				program.getUniforms().setValue(gl, 'morphTargetBaseInfluence', morphBaseInfluence);
				program.getUniforms().setValue(gl, 'morphTargetInfluences', morphInfluences);
			}
		}

		return {
			update: update
		};
	}

	function WebGLObjects(gl, geometries, attributes, info) {
		let updateMap = new WeakMap();

		function update(object) {
			const frame = info.render.frame;
			const geometry = object.geometry;
			const buffergeometry = geometries.get(object, geometry); // Update once per frame

			if (updateMap.get(buffergeometry) !== frame) {
				geometries.update(buffergeometry);
				updateMap.set(buffergeometry, frame);
			}

			if (object.isInstancedMesh) {
				if (object.hasEventListener('dispose', onInstancedMeshDispose) === false) {
					object.addEventListener('dispose', onInstancedMeshDispose);
				}

				attributes.update(object.instanceMatrix, gl.ARRAY_BUFFER);

				if (object.instanceColor !== null) {
					attributes.update(object.instanceColor, gl.ARRAY_BUFFER);
				}
			}

			return buffergeometry;
		}

		function dispose() {
			updateMap = new WeakMap();
		}

		function onInstancedMeshDispose(event) {
			const instancedMesh = event.target;
			instancedMesh.removeEventListener('dispose', onInstancedMeshDispose);
			attributes.remove(instancedMesh.instanceMatrix);
			if (instancedMesh.instanceColor !== null) attributes.remove(instancedMesh.instanceColor);
		}

		return {
			update: update,
			dispose: dispose
		};
	}

	class DataTexture3D extends Texture {
		constructor(data = null, width = 1, height = 1, depth = 1) {
			// We're going to add .setXXX() methods for setting properties later.
			// Users can still set in DataTexture3D directly.
			//
			//	const texture = new THREE.DataTexture3D( data, width, height, depth );
			// 	texture.anisotropy = 16;
			//
			// See #14839
			super(null);
			this.image = {
				data,
				width,
				height,
				depth
			};
			this.magFilter = NearestFilter;
			this.minFilter = NearestFilter;
			this.wrapR = ClampToEdgeWrapping;
			this.generateMipmaps = false;
			this.flipY = false;
			this.unpackAlignment = 1;
			this.needsUpdate = true;
		}

	}

	DataTexture3D.prototype.isDataTexture3D = true;

	/**
	 * Uniforms of a program.
	 * Those form a tree structure with a special top-level container for the root,
	 * which you get by calling 'new WebGLUniforms( gl, program )'.
	 *
	 *
	 * Properties of inner nodes including the top-level container:
	 *
	 * .seq - array of nested uniforms
	 * .map - nested uniforms by name
	 *
	 *
	 * Methods of all nodes except the top-level container:
	 *
	 * .setValue( gl, value, [textures] )
	 *
	 * 		uploads a uniform value(s)
	 *		the 'textures' parameter is needed for sampler uniforms
	 *
	 *
	 * Static methods of the top-level container (textures factorizations):
	 *
	 * .upload( gl, seq, values, textures )
	 *
	 * 		sets uniforms in 'seq' to 'values[id].value'
	 *
	 * .seqWithValue( seq, values ) : filteredSeq
	 *
	 * 		filters 'seq' entries with corresponding entry in values
	 *
	 *
	 * Methods of the top-level container (textures factorizations):
	 *
	 * .setValue( gl, name, value, textures )
	 *
	 * 		sets uniform with	name 'name' to 'value'
	 *
	 * .setOptional( gl, obj, prop )
	 *
	 * 		like .set for an optional property of the object
	 *
	 */
	const emptyTexture = new Texture();
	const emptyTexture2dArray = new DataTexture2DArray();
	const emptyTexture3d = new DataTexture3D();
	const emptyCubeTexture = new CubeTexture(); // --- Utilities ---
	// Array Caches (provide typed arrays for temporary by size)

	const arrayCacheF32 = [];
	const arrayCacheI32 = []; // Float32Array caches used for uploading Matrix uniforms

	const mat4array = new Float32Array(16);
	const mat3array = new Float32Array(9);
	const mat2array = new Float32Array(4); // Flattening for arrays of vectors and matrices

	function flatten(array, nBlocks, blockSize) {
		const firstElem = array[0];
		if (firstElem <= 0 || firstElem > 0) return array; // unoptimized: ! isNaN( firstElem )
		// see http://jacksondunstan.com/articles/983

		const n = nBlocks * blockSize;
		let r = arrayCacheF32[n];

		if (r === undefined) {
			r = new Float32Array(n);
			arrayCacheF32[n] = r;
		}

		if (nBlocks !== 0) {
			firstElem.toArray(r, 0);

			for (let i = 1, offset = 0; i !== nBlocks; ++i) {
				offset += blockSize;
				array[i].toArray(r, offset);
			}
		}

		return r;
	}

	function arraysEqual(a, b) {
		if (a.length !== b.length) return false;

		for (let i = 0, l = a.length; i < l; i++) {
			if (a[i] !== b[i]) return false;
		}

		return true;
	}

	function copyArray(a, b) {
		for (let i = 0, l = b.length; i < l; i++) {
			a[i] = b[i];
		}
	} // Texture unit allocation


	function allocTexUnits(textures, n) {
		let r = arrayCacheI32[n];

		if (r === undefined) {
			r = new Int32Array(n);
			arrayCacheI32[n] = r;
		}

		for (let i = 0; i !== n; ++i) {
			r[i] = textures.allocateTextureUnit();
		}

		return r;
	} // --- Setters ---
	// Note: Defining these methods externally, because they come in a bunch
	// and this way their names minify.
	// Single scalar


	function setValueV1f(gl, v) {
		const cache = this.cache;
		if (cache[0] === v) return;
		gl.uniform1f(this.addr, v);
		cache[0] = v;
	} // Single float vector (from flat array or THREE.VectorN)


	function setValueV2f(gl, v) {
		const cache = this.cache;

		if (v.x !== undefined) {
			if (cache[0] !== v.x || cache[1] !== v.y) {
				gl.uniform2f(this.addr, v.x, v.y);
				cache[0] = v.x;
				cache[1] = v.y;
			}
		} else {
			if (arraysEqual(cache, v)) return;
			gl.uniform2fv(this.addr, v);
			copyArray(cache, v);
		}
	}

	function setValueV3f(gl, v) {
		const cache = this.cache;

		if (v.x !== undefined) {
			if (cache[0] !== v.x || cache[1] !== v.y || cache[2] !== v.z) {
				gl.uniform3f(this.addr, v.x, v.y, v.z);
				cache[0] = v.x;
				cache[1] = v.y;
				cache[2] = v.z;
			}
		} else if (v.r !== undefined) {
			if (cache[0] !== v.r || cache[1] !== v.g || cache[2] !== v.b) {
				gl.uniform3f(this.addr, v.r, v.g, v.b);
				cache[0] = v.r;
				cache[1] = v.g;
				cache[2] = v.b;
			}
		} else {
			if (arraysEqual(cache, v)) return;
			gl.uniform3fv(this.addr, v);
			copyArray(cache, v);
		}
	}

	function setValueV4f(gl, v) {
		const cache = this.cache;

		if (v.x !== undefined) {
			if (cache[0] !== v.x || cache[1] !== v.y || cache[2] !== v.z || cache[3] !== v.w) {
				gl.uniform4f(this.addr, v.x, v.y, v.z, v.w);
				cache[0] = v.x;
				cache[1] = v.y;
				cache[2] = v.z;
				cache[3] = v.w;
			}
		} else {
			if (arraysEqual(cache, v)) return;
			gl.uniform4fv(this.addr, v);
			copyArray(cache, v);
		}
	} // Single matrix (from flat array or THREE.MatrixN)


	function setValueM2(gl, v) {
		const cache = this.cache;
		const elements = v.elements;

		if (elements === undefined) {
			if (arraysEqual(cache, v)) return;
			gl.uniformMatrix2fv(this.addr, false, v);
			copyArray(cache, v);
		} else {
			if (arraysEqual(cache, elements)) return;
			mat2array.set(elements);
			gl.uniformMatrix2fv(this.addr, false, mat2array);
			copyArray(cache, elements);
		}
	}

	function setValueM3(gl, v) {
		const cache = this.cache;
		const elements = v.elements;

		if (elements === undefined) {
			if (arraysEqual(cache, v)) return;
			gl.uniformMatrix3fv(this.addr, false, v);
			copyArray(cache, v);
		} else {
			if (arraysEqual(cache, elements)) return;
			mat3array.set(elements);
			gl.uniformMatrix3fv(this.addr, false, mat3array);
			copyArray(cache, elements);
		}
	}

	function setValueM4(gl, v) {
		const cache = this.cache;
		const elements = v.elements;

		if (elements === undefined) {
			if (arraysEqual(cache, v)) return;
			gl.uniformMatrix4fv(this.addr, false, v);
			copyArray(cache, v);
		} else {
			if (arraysEqual(cache, elements)) return;
			mat4array.set(elements);
			gl.uniformMatrix4fv(this.addr, false, mat4array);
			copyArray(cache, elements);
		}
	} // Single integer / boolean


	function setValueV1i(gl, v) {
		const cache = this.cache;
		if (cache[0] === v) return;
		gl.uniform1i(this.addr, v);
		cache[0] = v;
	} // Single integer / boolean vector (from flat array)


	function setValueV2i(gl, v) {
		const cache = this.cache;
		if (arraysEqual(cache, v)) return;
		gl.uniform2iv(this.addr, v);
		copyArray(cache, v);
	}

	function setValueV3i(gl, v) {
		const cache = this.cache;
		if (arraysEqual(cache, v)) return;
		gl.uniform3iv(this.addr, v);
		copyArray(cache, v);
	}

	function setValueV4i(gl, v) {
		const cache = this.cache;
		if (arraysEqual(cache, v)) return;
		gl.uniform4iv(this.addr, v);
		copyArray(cache, v);
	} // Single unsigned integer


	function setValueV1ui(gl, v) {
		const cache = this.cache;
		if (cache[0] === v) return;
		gl.uniform1ui(this.addr, v);
		cache[0] = v;
	} // Single unsigned integer vector (from flat array)


	function setValueV2ui(gl, v) {
		const cache = this.cache;
		if (arraysEqual(cache, v)) return;
		gl.uniform2uiv(this.addr, v);
		copyArray(cache, v);
	}

	function setValueV3ui(gl, v) {
		const cache = this.cache;
		if (arraysEqual(cache, v)) return;
		gl.uniform3uiv(this.addr, v);
		copyArray(cache, v);
	}

	function setValueV4ui(gl, v) {
		const cache = this.cache;
		if (arraysEqual(cache, v)) return;
		gl.uniform4uiv(this.addr, v);
		copyArray(cache, v);
	} // Single texture (2D / Cube)


	function setValueT1(gl, v, textures) {
		const cache = this.cache;
		const unit = textures.allocateTextureUnit();

		if (cache[0] !== unit) {
			gl.uniform1i(this.addr, unit);
			cache[0] = unit;
		}

		textures.safeSetTexture2D(v || emptyTexture, unit);
	}

	function setValueT3D1(gl, v, textures) {
		const cache = this.cache;
		const unit = textures.allocateTextureUnit();

		if (cache[0] !== unit) {
			gl.uniform1i(this.addr, unit);
			cache[0] = unit;
		}

		textures.setTexture3D(v || emptyTexture3d, unit);
	}

	function setValueT6(gl, v, textures) {
		const cache = this.cache;
		const unit = textures.allocateTextureUnit();

		if (cache[0] !== unit) {
			gl.uniform1i(this.addr, unit);
			cache[0] = unit;
		}

		textures.safeSetTextureCube(v || emptyCubeTexture, unit);
	}

	function setValueT2DArray1(gl, v, textures) {
		const cache = this.cache;
		const unit = textures.allocateTextureUnit();

		if (cache[0] !== unit) {
			gl.uniform1i(this.addr, unit);
			cache[0] = unit;
		}

		textures.setTexture2DArray(v || emptyTexture2dArray, unit);
	} // Helper to pick the right setter for the singular case


	function getSingularSetter(type) {
		switch (type) {
			case 0x1406:
				return setValueV1f;
			// FLOAT

			case 0x8b50:
				return setValueV2f;
			// _VEC2

			case 0x8b51:
				return setValueV3f;
			// _VEC3

			case 0x8b52:
				return setValueV4f;
			// _VEC4

			case 0x8b5a:
				return setValueM2;
			// _MAT2

			case 0x8b5b:
				return setValueM3;
			// _MAT3

			case 0x8b5c:
				return setValueM4;
			// _MAT4

			case 0x1404:
			case 0x8b56:
				return setValueV1i;
			// INT, BOOL

			case 0x8b53:
			case 0x8b57:
				return setValueV2i;
			// _VEC2

			case 0x8b54:
			case 0x8b58:
				return setValueV3i;
			// _VEC3

			case 0x8b55:
			case 0x8b59:
				return setValueV4i;
			// _VEC4

			case 0x1405:
				return setValueV1ui;
			// UINT

			case 0x8dc6:
				return setValueV2ui;
			// _VEC2

			case 0x8dc7:
				return setValueV3ui;
			// _VEC3

			case 0x8dc8:
				return setValueV4ui;
			// _VEC4

			case 0x8b5e: // SAMPLER_2D

			case 0x8d66: // SAMPLER_EXTERNAL_OES

			case 0x8dca: // INT_SAMPLER_2D

			case 0x8dd2: // UNSIGNED_INT_SAMPLER_2D

			case 0x8b62:
				// SAMPLER_2D_SHADOW
				return setValueT1;

			case 0x8b5f: // SAMPLER_3D

			case 0x8dcb: // INT_SAMPLER_3D

			case 0x8dd3:
				// UNSIGNED_INT_SAMPLER_3D
				return setValueT3D1;

			case 0x8b60: // SAMPLER_CUBE

			case 0x8dcc: // INT_SAMPLER_CUBE

			case 0x8dd4: // UNSIGNED_INT_SAMPLER_CUBE

			case 0x8dc5:
				// SAMPLER_CUBE_SHADOW
				return setValueT6;

			case 0x8dc1: // SAMPLER_2D_ARRAY

			case 0x8dcf: // INT_SAMPLER_2D_ARRAY

			case 0x8dd7: // UNSIGNED_INT_SAMPLER_2D_ARRAY

			case 0x8dc4:
				// SAMPLER_2D_ARRAY_SHADOW
				return setValueT2DArray1;
		}
	} // Array of scalars


	function setValueV1fArray(gl, v) {
		gl.uniform1fv(this.addr, v);
	} // Array of vectors (from flat array or array of THREE.VectorN)


	function setValueV2fArray(gl, v) {
		const data = flatten(v, this.size, 2);
		gl.uniform2fv(this.addr, data);
	}

	function setValueV3fArray(gl, v) {
		const data = flatten(v, this.size, 3);
		gl.uniform3fv(this.addr, data);
	}

	function setValueV4fArray(gl, v) {
		const data = flatten(v, this.size, 4);
		gl.uniform4fv(this.addr, data);
	} // Array of matrices (from flat array or array of THREE.MatrixN)


	function setValueM2Array(gl, v) {
		const data = flatten(v, this.size, 4);
		gl.uniformMatrix2fv(this.addr, false, data);
	}

	function setValueM3Array(gl, v) {
		const data = flatten(v, this.size, 9);
		gl.uniformMatrix3fv(this.addr, false, data);
	}

	function setValueM4Array(gl, v) {
		const data = flatten(v, this.size, 16);
		gl.uniformMatrix4fv(this.addr, false, data);
	} // Array of integer / boolean


	function setValueV1iArray(gl, v) {
		gl.uniform1iv(this.addr, v);
	} // Array of integer / boolean vectors (from flat array)


	function setValueV2iArray(gl, v) {
		gl.uniform2iv(this.addr, v);
	}

	function setValueV3iArray(gl, v) {
		gl.uniform3iv(this.addr, v);
	}

	function setValueV4iArray(gl, v) {
		gl.uniform4iv(this.addr, v);
	} // Array of unsigned integer


	function setValueV1uiArray(gl, v) {
		gl.uniform1uiv(this.addr, v);
	} // Array of unsigned integer vectors (from flat array)


	function setValueV2uiArray(gl, v) {
		gl.uniform2uiv(this.addr, v);
	}

	function setValueV3uiArray(gl, v) {
		gl.uniform3uiv(this.addr, v);
	}

	function setValueV4uiArray(gl, v) {
		gl.uniform4uiv(this.addr, v);
	} // Array of textures (2D / Cube)


	function setValueT1Array(gl, v, textures) {
		const n = v.length;
		const units = allocTexUnits(textures, n);
		gl.uniform1iv(this.addr, units);

		for (let i = 0; i !== n; ++i) {
			textures.safeSetTexture2D(v[i] || emptyTexture, units[i]);
		}
	}

	function setValueT6Array(gl, v, textures) {
		const n = v.length;
		const units = allocTexUnits(textures, n);
		gl.uniform1iv(this.addr, units);

		for (let i = 0; i !== n; ++i) {
			textures.safeSetTextureCube(v[i] || emptyCubeTexture, units[i]);
		}
	} // Helper to pick the right setter for a pure (bottom-level) array


	function getPureArraySetter(type) {
		switch (type) {
			case 0x1406:
				return setValueV1fArray;
			// FLOAT

			case 0x8b50:
				return setValueV2fArray;
			// _VEC2

			case 0x8b51:
				return setValueV3fArray;
			// _VEC3

			case 0x8b52:
				return setValueV4fArray;
			// _VEC4

			case 0x8b5a:
				return setValueM2Array;
			// _MAT2

			case 0x8b5b:
				return setValueM3Array;
			// _MAT3

			case 0x8b5c:
				return setValueM4Array;
			// _MAT4

			case 0x1404:
			case 0x8b56:
				return setValueV1iArray;
			// INT, BOOL

			case 0x8b53:
			case 0x8b57:
				return setValueV2iArray;
			// _VEC2

			case 0x8b54:
			case 0x8b58:
				return setValueV3iArray;
			// _VEC3

			case 0x8b55:
			case 0x8b59:
				return setValueV4iArray;
			// _VEC4

			case 0x1405:
				return setValueV1uiArray;
			// UINT

			case 0x8dc6:
				return setValueV2uiArray;
			// _VEC2

			case 0x8dc7:
				return setValueV3uiArray;
			// _VEC3

			case 0x8dc8:
				return setValueV4uiArray;
			// _VEC4

			case 0x8b5e: // SAMPLER_2D

			case 0x8d66: // SAMPLER_EXTERNAL_OES

			case 0x8dca: // INT_SAMPLER_2D

			case 0x8dd2: // UNSIGNED_INT_SAMPLER_2D

			case 0x8b62:
				// SAMPLER_2D_SHADOW
				return setValueT1Array;

			case 0x8b60: // SAMPLER_CUBE

			case 0x8dcc: // INT_SAMPLER_CUBE

			case 0x8dd4: // UNSIGNED_INT_SAMPLER_CUBE

			case 0x8dc5:
				// SAMPLER_CUBE_SHADOW
				return setValueT6Array;
		}
	} // --- Uniform Classes ---


	function SingleUniform(id, activeInfo, addr) {
		this.id = id;
		this.addr = addr;
		this.cache = [];
		this.setValue = getSingularSetter(activeInfo.type); // this.path = activeInfo.name; // DEBUG
	}

	function PureArrayUniform(id, activeInfo, addr) {
		this.id = id;
		this.addr = addr;
		this.cache = [];
		this.size = activeInfo.size;
		this.setValue = getPureArraySetter(activeInfo.type); // this.path = activeInfo.name; // DEBUG
	}

	PureArrayUniform.prototype.updateCache = function (data) {
		const cache = this.cache;

		if (data instanceof Float32Array && cache.length !== data.length) {
			this.cache = new Float32Array(data.length);
		}

		copyArray(cache, data);
	};

	function StructuredUniform(id) {
		this.id = id;
		this.seq = [];
		this.map = {};
	}

	StructuredUniform.prototype.setValue = function (gl, value, textures) {
		const seq = this.seq;

		for (let i = 0, n = seq.length; i !== n; ++i) {
			const u = seq[i];
			u.setValue(gl, value[u.id], textures);
		}
	}; // --- Top-level ---
	// Parser - builds up the property tree from the path strings


	const RePathPart = /(\w+)(\])?(\[|\.)?/g; // extracts
	// 	- the identifier (member name or array index)
	//	- followed by an optional right bracket (found when array index)
	//	- followed by an optional left bracket or dot (type of subscript)
	//
	// Note: These portions can be read in a non-overlapping fashion and
	// allow straightforward parsing of the hierarchy that WebGL encodes
	// in the uniform names.

	function addUniform(container, uniformObject) {
		container.seq.push(uniformObject);
		container.map[uniformObject.id] = uniformObject;
	}

	function parseUniform(activeInfo, addr, container) {
		const path = activeInfo.name,
					pathLength = path.length; // reset RegExp object, because of the early exit of a previous run

		RePathPart.lastIndex = 0;

		while (true) {
			const match = RePathPart.exec(path),
						matchEnd = RePathPart.lastIndex;
			let id = match[1];
			const idIsIndex = match[2] === ']',
						subscript = match[3];
			if (idIsIndex) id = id | 0; // convert to integer

			if (subscript === undefined || subscript === '[' && matchEnd + 2 === pathLength) {
				// bare name or "pure" bottom-level array "[0]" suffix
				addUniform(container, subscript === undefined ? new SingleUniform(id, activeInfo, addr) : new PureArrayUniform(id, activeInfo, addr));
				break;
			} else {
				// step into inner node / create it in case it doesn't exist
				const map = container.map;
				let next = map[id];

				if (next === undefined) {
					next = new StructuredUniform(id);
					addUniform(container, next);
				}

				container = next;
			}
		}
	} // Root Container


	function WebGLUniforms(gl, program) {
		this.seq = [];
		this.map = {};
		const n = gl.getProgramParameter(program, gl.ACTIVE_UNIFORMS);

		for (let i = 0; i < n; ++i) {
			const info = gl.getActiveUniform(program, i),
						addr = gl.getUniformLocation(program, info.name);
			parseUniform(info, addr, this);
		}
	}

	WebGLUniforms.prototype.setValue = function (gl, name, value, textures) {
		const u = this.map[name];
		if (u !== undefined) u.setValue(gl, value, textures);
	};

	WebGLUniforms.prototype.setOptional = function (gl, object, name) {
		const v = object[name];
		if (v !== undefined) this.setValue(gl, name, v);
	}; // Static interface


	WebGLUniforms.upload = function (gl, seq, values, textures) {
		for (let i = 0, n = seq.length; i !== n; ++i) {
			const u = seq[i],
						v = values[u.id];

			if (v.needsUpdate !== false) {
				// note: always updating when .needsUpdate is undefined
				u.setValue(gl, v.value, textures);
			}
		}
	};

	WebGLUniforms.seqWithValue = function (seq, values) {
		const r = [];

		for (let i = 0, n = seq.length; i !== n; ++i) {
			const u = seq[i];
			if (u.id in values) r.push(u);
		}

		return r;
	};

	function WebGLShader(gl, type, string) {
		const shader = gl.createShader(type);
		gl.shaderSource(shader, string);
		gl.compileShader(shader);
		return shader;
	}

	let programIdCount = 0;

	function addLineNumbers(string) {
		const lines = string.split('\n');

		for (let i = 0; i < lines.length; i++) {
			lines[i] = i + 1 + ': ' + lines[i];
		}

		return lines.join('\n');
	}

	function getEncodingComponents(encoding) {
		switch (encoding) {
			case LinearEncoding:
				return ['Linear', '( value )'];

			case sRGBEncoding:
				return ['sRGB', '( value )'];

			case RGBEEncoding:
				return ['RGBE', '( value )'];

			case RGBM7Encoding:
				return ['RGBM', '( value, 7.0 )'];

			case RGBM16Encoding:
				return ['RGBM', '( value, 16.0 )'];

			case RGBDEncoding:
				return ['RGBD', '( value, 256.0 )'];

			case GammaEncoding:
				return ['Gamma', '( value, float( GAMMA_FACTOR ) )'];

			case LogLuvEncoding:
				return ['LogLuv', '( value )'];

			default:
				console.warn('THREE.WebGLProgram: Unsupported encoding:', encoding);
				return ['Linear', '( value )'];
		}
	}

	function getShaderErrors(gl, shader, type) {
		const status = gl.getShaderParameter(shader, gl.COMPILE_STATUS);
		const errors = gl.getShaderInfoLog(shader).trim();
		if (status && errors === '') return ''; // --enable-privileged-webgl-extension
		// console.log( '**' + type + '**', gl.getExtension( 'WEBGL_debug_shaders' ).getTranslatedShaderSource( shader ) );

		return type.toUpperCase() + '\n\n' + errors + '\n\n' + addLineNumbers(gl.getShaderSource(shader));
	}

	function getTexelDecodingFunction(functionName, encoding) {
		const components = getEncodingComponents(encoding);
		return 'vec4 ' + functionName + '( vec4 value ) { return ' + components[0] + 'ToLinear' + components[1] + '; }';
	}

	function getTexelEncodingFunction(functionName, encoding) {
		const components = getEncodingComponents(encoding);
		return 'vec4 ' + functionName + '( vec4 value ) { return LinearTo' + components[0] + components[1] + '; }';
	}

	function getToneMappingFunction(functionName, toneMapping) {
		let toneMappingName;

		switch (toneMapping) {
			case LinearToneMapping:
				toneMappingName = 'Linear';
				break;

			case ReinhardToneMapping:
				toneMappingName = 'Reinhard';
				break;

			case CineonToneMapping:
				toneMappingName = 'OptimizedCineon';
				break;

			case ACESFilmicToneMapping:
				toneMappingName = 'ACESFilmic';
				break;

			case CustomToneMapping:
				toneMappingName = 'Custom';
				break;

			default:
				console.warn('THREE.WebGLProgram: Unsupported toneMapping:', toneMapping);
				toneMappingName = 'Linear';
		}

		return 'vec3 ' + functionName + '( vec3 color ) { return ' + toneMappingName + 'ToneMapping( color ); }';
	}

	function generateExtensions(parameters) {
		const chunks = [parameters.extensionDerivatives || parameters.envMapCubeUV || parameters.bumpMap || parameters.tangentSpaceNormalMap || parameters.clearcoatNormalMap || parameters.flatShading || parameters.shaderID === 'physical' ? '#extension GL_OES_standard_derivatives : enable' : '', (parameters.extensionFragDepth || parameters.logarithmicDepthBuffer) && parameters.rendererExtensionFragDepth ? '#extension GL_EXT_frag_depth : enable' : '', parameters.extensionDrawBuffers && parameters.rendererExtensionDrawBuffers ? '#extension GL_EXT_draw_buffers : require' : '', (parameters.extensionShaderTextureLOD || parameters.envMap || parameters.transmission) && parameters.rendererExtensionShaderTextureLod ? '#extension GL_EXT_shader_texture_lod : enable' : ''];
		return chunks.filter(filterEmptyLine).join('\n');
	}

	function generateDefines(defines) {
		const chunks = [];

		for (const name in defines) {
			const value = defines[name];
			if (value === false) continue;
			chunks.push('#define ' + name + ' ' + value);
		}

		return chunks.join('\n');
	}

	function fetchAttributeLocations(gl, program) {
		const attributes = {};
		const n = gl.getProgramParameter(program, gl.ACTIVE_ATTRIBUTES);

		for (let i = 0; i < n; i++) {
			const info = gl.getActiveAttrib(program, i);
			const name = info.name;
			let locationSize = 1;
			if (info.type === gl.FLOAT_MAT2) locationSize = 2;
			if (info.type === gl.FLOAT_MAT3) locationSize = 3;
			if (info.type === gl.FLOAT_MAT4) locationSize = 4; // console.log( 'THREE.WebGLProgram: ACTIVE VERTEX ATTRIBUTE:', name, i );

			attributes[name] = {
				type: info.type,
				location: gl.getAttribLocation(program, name),
				locationSize: locationSize
			};
		}

		return attributes;
	}

	function filterEmptyLine(string) {
		return string !== '';
	}

	function replaceLightNums(string, parameters) {
		return string.replace(/NUM_DIR_LIGHTS/g, parameters.numDirLights).replace(/NUM_SPOT_LIGHTS/g, parameters.numSpotLights).replace(/NUM_RECT_AREA_LIGHTS/g, parameters.numRectAreaLights).replace(/NUM_POINT_LIGHTS/g, parameters.numPointLights).replace(/NUM_HEMI_LIGHTS/g, parameters.numHemiLights).replace(/NUM_DIR_LIGHT_SHADOWS/g, parameters.numDirLightShadows).replace(/NUM_SPOT_LIGHT_SHADOWS/g, parameters.numSpotLightShadows).replace(/NUM_POINT_LIGHT_SHADOWS/g, parameters.numPointLightShadows);
	}

	function replaceClippingPlaneNums(string, parameters) {
		return string.replace(/NUM_CLIPPING_PLANES/g, parameters.numClippingPlanes).replace(/UNION_CLIPPING_PLANES/g, parameters.numClippingPlanes - parameters.numClipIntersection);
	} // Resolve Includes


	const includePattern = /^[ \t]*#include +<([\w\d./]+)>/gm;

	function resolveIncludes(string) {
		return string.replace(includePattern, includeReplacer);
	}

	function includeReplacer(match, include) {
		const string = ShaderChunk[include];

		if (string === undefined) {
			throw new Error('Can not resolve #include <' + include + '>');
		}

		return resolveIncludes(string);
	} // Unroll Loops


	const deprecatedUnrollLoopPattern = /#pragma unroll_loop[\s]+?for \( int i \= (\d+)\; i < (\d+)\; i \+\+ \) \{([\s\S]+?)(?=\})\}/g;
	const unrollLoopPattern = /#pragma unroll_loop_start\s+for\s*\(\s*int\s+i\s*=\s*(\d+)\s*;\s*i\s*<\s*(\d+)\s*;\s*i\s*\+\+\s*\)\s*{([\s\S]+?)}\s+#pragma unroll_loop_end/g;

	function unrollLoops(string) {
		return string.replace(unrollLoopPattern, loopReplacer).replace(deprecatedUnrollLoopPattern, deprecatedLoopReplacer);
	}

	function deprecatedLoopReplacer(match, start, end, snippet) {
		console.warn('WebGLProgram: #pragma unroll_loop shader syntax is deprecated. Please use #pragma unroll_loop_start syntax instead.');
		return loopReplacer(match, start, end, snippet);
	}

	function loopReplacer(match, start, end, snippet) {
		let string = '';

		for (let i = parseInt(start); i < parseInt(end); i++) {
			string += snippet.replace(/\[\s*i\s*\]/g, '[ ' + i + ' ]').replace(/UNROLLED_LOOP_INDEX/g, i);
		}

		return string;
	} //


	function generatePrecision(parameters) {
		let precisionstring = 'precision ' + parameters.precision + ' float;\nprecision ' + parameters.precision + ' int;';

		if (parameters.precision === 'highp') {
			precisionstring += '\n#define HIGH_PRECISION';
		} else if (parameters.precision === 'mediump') {
			precisionstring += '\n#define MEDIUM_PRECISION';
		} else if (parameters.precision === 'lowp') {
			precisionstring += '\n#define LOW_PRECISION';
		}

		return precisionstring;
	}

	function generateShadowMapTypeDefine(parameters) {
		let shadowMapTypeDefine = 'SHADOWMAP_TYPE_BASIC';

		if (parameters.shadowMapType === PCFShadowMap) {
			shadowMapTypeDefine = 'SHADOWMAP_TYPE_PCF';
		} else if (parameters.shadowMapType === PCFSoftShadowMap) {
			shadowMapTypeDefine = 'SHADOWMAP_TYPE_PCF_SOFT';
		} else if (parameters.shadowMapType === VSMShadowMap) {
			shadowMapTypeDefine = 'SHADOWMAP_TYPE_VSM';
		}

		return shadowMapTypeDefine;
	}

	function generateEnvMapTypeDefine(parameters) {
		let envMapTypeDefine = 'ENVMAP_TYPE_CUBE';

		if (parameters.envMap) {
			switch (parameters.envMapMode) {
				case CubeReflectionMapping:
				case CubeRefractionMapping:
					envMapTypeDefine = 'ENVMAP_TYPE_CUBE';
					break;

				case CubeUVReflectionMapping:
				case CubeUVRefractionMapping:
					envMapTypeDefine = 'ENVMAP_TYPE_CUBE_UV';
					break;
			}
		}

		return envMapTypeDefine;
	}

	function generateEnvMapModeDefine(parameters) {
		let envMapModeDefine = 'ENVMAP_MODE_REFLECTION';

		if (parameters.envMap) {
			switch (parameters.envMapMode) {
				case CubeRefractionMapping:
				case CubeUVRefractionMapping:
					envMapModeDefine = 'ENVMAP_MODE_REFRACTION';
					break;
			}
		}

		return envMapModeDefine;
	}

	function generateEnvMapBlendingDefine(parameters) {
		let envMapBlendingDefine = 'ENVMAP_BLENDING_NONE';

		if (parameters.envMap) {
			switch (parameters.combine) {
				case MultiplyOperation:
					envMapBlendingDefine = 'ENVMAP_BLENDING_MULTIPLY';
					break;

				case MixOperation:
					envMapBlendingDefine = 'ENVMAP_BLENDING_MIX';
					break;

				case AddOperation:
					envMapBlendingDefine = 'ENVMAP_BLENDING_ADD';
					break;
			}
		}

		return envMapBlendingDefine;
	}

	function WebGLProgram(renderer, cacheKey, parameters, bindingStates) {
		// TODO Send this event to Three.js DevTools
		// console.log( 'WebGLProgram', cacheKey );
		const gl = renderer.getContext();
		const defines = parameters.defines;
		let vertexShader = parameters.vertexShader;
		let fragmentShader = parameters.fragmentShader;
		const shadowMapTypeDefine = generateShadowMapTypeDefine(parameters);
		const envMapTypeDefine = generateEnvMapTypeDefine(parameters);
		const envMapModeDefine = generateEnvMapModeDefine(parameters);
		const envMapBlendingDefine = generateEnvMapBlendingDefine(parameters);
		const gammaFactorDefine = renderer.gammaFactor > 0 ? renderer.gammaFactor : 1.0;
		const customExtensions = parameters.isWebGL2 ? '' : generateExtensions(parameters);
		const customDefines = generateDefines(defines);
		const program = gl.createProgram();
		let prefixVertex, prefixFragment;
		let versionString = parameters.glslVersion ? '#version ' + parameters.glslVersion + '\n' : '';

		if (parameters.isRawShaderMaterial) {
			prefixVertex = [customDefines].filter(filterEmptyLine).join('\n');

			if (prefixVertex.length > 0) {
				prefixVertex += '\n';
			}

			prefixFragment = [customExtensions, customDefines].filter(filterEmptyLine).join('\n');

			if (prefixFragment.length > 0) {
				prefixFragment += '\n';
			}
		} else {
			prefixVertex = [generatePrecision(parameters), '#define SHADER_NAME ' + parameters.shaderName, customDefines, parameters.instancing ? '#define USE_INSTANCING' : '', parameters.instancingColor ? '#define USE_INSTANCING_COLOR' : '', parameters.supportsVertexTextures ? '#define VERTEX_TEXTURES' : '', '#define GAMMA_FACTOR ' + gammaFactorDefine, '#define MAX_BONES ' + parameters.maxBones, parameters.useFog && parameters.fog ? '#define USE_FOG' : '', parameters.useFog && parameters.fogExp2 ? '#define FOG_EXP2' : '', parameters.map ? '#define USE_MAP' : '', parameters.envMap ? '#define USE_ENVMAP' : '', parameters.envMap ? '#define ' + envMapModeDefine : '', parameters.lightMap ? '#define USE_LIGHTMAP' : '', parameters.aoMap ? '#define USE_AOMAP' : '', parameters.emissiveMap ? '#define USE_EMISSIVEMAP' : '', parameters.bumpMap ? '#define USE_BUMPMAP' : '', parameters.normalMap ? '#define USE_NORMALMAP' : '', parameters.normalMap && parameters.objectSpaceNormalMap ? '#define OBJECTSPACE_NORMALMAP' : '', parameters.normalMap && parameters.tangentSpaceNormalMap ? '#define TANGENTSPACE_NORMALMAP' : '', parameters.clearcoatMap ? '#define USE_CLEARCOATMAP' : '', parameters.clearcoatRoughnessMap ? '#define USE_CLEARCOAT_ROUGHNESSMAP' : '', parameters.clearcoatNormalMap ? '#define USE_CLEARCOAT_NORMALMAP' : '', parameters.displacementMap && parameters.supportsVertexTextures ? '#define USE_DISPLACEMENTMAP' : '', parameters.specularMap ? '#define USE_SPECULARMAP' : '', parameters.specularIntensityMap ? '#define USE_SPECULARINTENSITYMAP' : '', parameters.specularTintMap ? '#define USE_SPECULARTINTMAP' : '', parameters.roughnessMap ? '#define USE_ROUGHNESSMAP' : '', parameters.metalnessMap ? '#define USE_METALNESSMAP' : '', parameters.alphaMap ? '#define USE_ALPHAMAP' : '', parameters.transmission ? '#define USE_TRANSMISSION' : '', parameters.transmissionMap ? '#define USE_TRANSMISSIONMAP' : '', parameters.thicknessMap ? '#define USE_THICKNESSMAP' : '', parameters.vertexTangents ? '#define USE_TANGENT' : '', parameters.vertexColors ? '#define USE_COLOR' : '', parameters.vertexAlphas ? '#define USE_COLOR_ALPHA' : '', parameters.vertexUvs ? '#define USE_UV' : '', parameters.uvsVertexOnly ? '#define UVS_VERTEX_ONLY' : '', parameters.flatShading ? '#define FLAT_SHADED' : '', parameters.skinning ? '#define USE_SKINNING' : '', parameters.useVertexTexture ? '#define BONE_TEXTURE' : '', parameters.morphTargets ? '#define USE_MORPHTARGETS' : '', parameters.morphNormals && parameters.flatShading === false ? '#define USE_MORPHNORMALS' : '', parameters.morphTargets && parameters.isWebGL2 ? '#define MORPHTARGETS_TEXTURE' : '', parameters.morphTargets && parameters.isWebGL2 ? '#define MORPHTARGETS_COUNT ' + parameters.morphTargetsCount : '', parameters.doubleSided ? '#define DOUBLE_SIDED' : '', parameters.flipSided ? '#define FLIP_SIDED' : '', parameters.shadowMapEnabled ? '#define USE_SHADOWMAP' : '', parameters.shadowMapEnabled ? '#define ' + shadowMapTypeDefine : '', parameters.sizeAttenuation ? '#define USE_SIZEATTENUATION' : '', parameters.logarithmicDepthBuffer ? '#define USE_LOGDEPTHBUF' : '', parameters.logarithmicDepthBuffer && parameters.rendererExtensionFragDepth ? '#define USE_LOGDEPTHBUF_EXT' : '', 'uniform mat4 modelMatrix;', 'uniform mat4 modelViewMatrix;', 'uniform mat4 projectionMatrix;', 'uniform mat4 viewMatrix;', 'uniform mat3 normalMatrix;', 'uniform vec3 cameraPosition;', 'uniform bool isOrthographic;', '#ifdef USE_INSTANCING', '	attribute mat4 instanceMatrix;', '#endif', '#ifdef USE_INSTANCING_COLOR', '	attribute vec3 instanceColor;', '#endif', 'attribute vec3 position;', 'attribute vec3 normal;', 'attribute vec2 uv;', '#ifdef USE_TANGENT', '	attribute vec4 tangent;', '#endif', '#if defined( USE_COLOR_ALPHA )', '	attribute vec4 color;', '#elif defined( USE_COLOR )', '	attribute vec3 color;', '#endif', '#if ( defined( USE_MORPHTARGETS ) && ! defined( MORPHTARGETS_TEXTURE ) )', '	attribute vec3 morphTarget0;', '	attribute vec3 morphTarget1;', '	attribute vec3 morphTarget2;', '	attribute vec3 morphTarget3;', '	#ifdef USE_MORPHNORMALS', '		attribute vec3 morphNormal0;', '		attribute vec3 morphNormal1;', '		attribute vec3 morphNormal2;', '		attribute vec3 morphNormal3;', '	#else', '		attribute vec3 morphTarget4;', '		attribute vec3 morphTarget5;', '		attribute vec3 morphTarget6;', '		attribute vec3 morphTarget7;', '	#endif', '#endif', '#ifdef USE_SKINNING', '	attribute vec4 skinIndex;', '	attribute vec4 skinWeight;', '#endif', '\n'].filter(filterEmptyLine).join('\n');
			prefixFragment = [customExtensions, generatePrecision(parameters), '#define SHADER_NAME ' + parameters.shaderName, customDefines, '#define GAMMA_FACTOR ' + gammaFactorDefine, parameters.useFog && parameters.fog ? '#define USE_FOG' : '', parameters.useFog && parameters.fogExp2 ? '#define FOG_EXP2' : '', parameters.map ? '#define USE_MAP' : '', parameters.matcap ? '#define USE_MATCAP' : '', parameters.envMap ? '#define USE_ENVMAP' : '', parameters.envMap ? '#define ' + envMapTypeDefine : '', parameters.envMap ? '#define ' + envMapModeDefine : '', parameters.envMap ? '#define ' + envMapBlendingDefine : '', parameters.lightMap ? '#define USE_LIGHTMAP' : '', parameters.aoMap ? '#define USE_AOMAP' : '', parameters.emissiveMap ? '#define USE_EMISSIVEMAP' : '', parameters.bumpMap ? '#define USE_BUMPMAP' : '', parameters.normalMap ? '#define USE_NORMALMAP' : '', parameters.normalMap && parameters.objectSpaceNormalMap ? '#define OBJECTSPACE_NORMALMAP' : '', parameters.normalMap && parameters.tangentSpaceNormalMap ? '#define TANGENTSPACE_NORMALMAP' : '', parameters.clearcoat ? '#define USE_CLEARCOAT' : '', parameters.clearcoatMap ? '#define USE_CLEARCOATMAP' : '', parameters.clearcoatRoughnessMap ? '#define USE_CLEARCOAT_ROUGHNESSMAP' : '', parameters.clearcoatNormalMap ? '#define USE_CLEARCOAT_NORMALMAP' : '', parameters.specularMap ? '#define USE_SPECULARMAP' : '', parameters.specularIntensityMap ? '#define USE_SPECULARINTENSITYMAP' : '', parameters.specularTintMap ? '#define USE_SPECULARTINTMAP' : '', parameters.roughnessMap ? '#define USE_ROUGHNESSMAP' : '', parameters.metalnessMap ? '#define USE_METALNESSMAP' : '', parameters.alphaMap ? '#define USE_ALPHAMAP' : '', parameters.alphaTest ? '#define USE_ALPHATEST' : '', parameters.sheen ? '#define USE_SHEEN' : '', parameters.transmission ? '#define USE_TRANSMISSION' : '', parameters.transmissionMap ? '#define USE_TRANSMISSIONMAP' : '', parameters.thicknessMap ? '#define USE_THICKNESSMAP' : '', parameters.vertexTangents ? '#define USE_TANGENT' : '', parameters.vertexColors || parameters.instancingColor ? '#define USE_COLOR' : '', parameters.vertexAlphas ? '#define USE_COLOR_ALPHA' : '', parameters.vertexUvs ? '#define USE_UV' : '', parameters.uvsVertexOnly ? '#define UVS_VERTEX_ONLY' : '', parameters.gradientMap ? '#define USE_GRADIENTMAP' : '', parameters.flatShading ? '#define FLAT_SHADED' : '', parameters.doubleSided ? '#define DOUBLE_SIDED' : '', parameters.flipSided ? '#define FLIP_SIDED' : '', parameters.shadowMapEnabled ? '#define USE_SHADOWMAP' : '', parameters.shadowMapEnabled ? '#define ' + shadowMapTypeDefine : '', parameters.premultipliedAlpha ? '#define PREMULTIPLIED_ALPHA' : '', parameters.physicallyCorrectLights ? '#define PHYSICALLY_CORRECT_LIGHTS' : '', parameters.logarithmicDepthBuffer ? '#define USE_LOGDEPTHBUF' : '', parameters.logarithmicDepthBuffer && parameters.rendererExtensionFragDepth ? '#define USE_LOGDEPTHBUF_EXT' : '', (parameters.extensionShaderTextureLOD || parameters.envMap) && parameters.rendererExtensionShaderTextureLod ? '#define TEXTURE_LOD_EXT' : '', 'uniform mat4 viewMatrix;', 'uniform vec3 cameraPosition;', 'uniform bool isOrthographic;', parameters.toneMapping !== NoToneMapping ? '#define TONE_MAPPING' : '', parameters.toneMapping !== NoToneMapping ? ShaderChunk['tonemapping_pars_fragment'] : '', // this code is required here because it is used by the toneMapping() function defined below
			parameters.toneMapping !== NoToneMapping ? getToneMappingFunction('toneMapping', parameters.toneMapping) : '', parameters.dithering ? '#define DITHERING' : '', parameters.format === RGBFormat ? '#define OPAQUE' : '', ShaderChunk['encodings_pars_fragment'], // this code is required here because it is used by the various encoding/decoding function defined below
			parameters.map ? getTexelDecodingFunction('mapTexelToLinear', parameters.mapEncoding) : '', parameters.matcap ? getTexelDecodingFunction('matcapTexelToLinear', parameters.matcapEncoding) : '', parameters.envMap ? getTexelDecodingFunction('envMapTexelToLinear', parameters.envMapEncoding) : '', parameters.emissiveMap ? getTexelDecodingFunction('emissiveMapTexelToLinear', parameters.emissiveMapEncoding) : '', parameters.specularTintMap ? getTexelDecodingFunction('specularTintMapTexelToLinear', parameters.specularTintMapEncoding) : '', parameters.lightMap ? getTexelDecodingFunction('lightMapTexelToLinear', parameters.lightMapEncoding) : '', getTexelEncodingFunction('linearToOutputTexel', parameters.outputEncoding), parameters.depthPacking ? '#define DEPTH_PACKING ' + parameters.depthPacking : '', '\n'].filter(filterEmptyLine).join('\n');
		}

		vertexShader = resolveIncludes(vertexShader);
		vertexShader = replaceLightNums(vertexShader, parameters);
		vertexShader = replaceClippingPlaneNums(vertexShader, parameters);
		fragmentShader = resolveIncludes(fragmentShader);
		fragmentShader = replaceLightNums(fragmentShader, parameters);
		fragmentShader = replaceClippingPlaneNums(fragmentShader, parameters);
		vertexShader = unrollLoops(vertexShader);
		fragmentShader = unrollLoops(fragmentShader);

		if (parameters.isWebGL2 && parameters.isRawShaderMaterial !== true) {
			// GLSL 3.0 conversion for built-in materials and ShaderMaterial
			versionString = '#version 300 es\n';
			prefixVertex = ['precision mediump sampler2DArray;', '#define attribute in', '#define varying out', '#define texture2D texture'].join('\n') + '\n' + prefixVertex;
			prefixFragment = ['#define varying in', parameters.glslVersion === GLSL3 ? '' : 'out highp vec4 pc_fragColor;', parameters.glslVersion === GLSL3 ? '' : '#define gl_FragColor pc_fragColor', '#define gl_FragDepthEXT gl_FragDepth', '#define texture2D texture', '#define textureCube texture', '#define texture2DProj textureProj', '#define texture2DLodEXT textureLod', '#define texture2DProjLodEXT textureProjLod', '#define textureCubeLodEXT textureLod', '#define texture2DGradEXT textureGrad', '#define texture2DProjGradEXT textureProjGrad', '#define textureCubeGradEXT textureGrad'].join('\n') + '\n' + prefixFragment;
		}

		const vertexGlsl = versionString + prefixVertex + vertexShader;
		const fragmentGlsl = versionString + prefixFragment + fragmentShader; // console.log( '*VERTEX*', vertexGlsl );
		// console.log( '*FRAGMENT*', fragmentGlsl );

		const glVertexShader = WebGLShader(gl, gl.VERTEX_SHADER, vertexGlsl);
		const glFragmentShader = WebGLShader(gl, gl.FRAGMENT_SHADER, fragmentGlsl);
		gl.attachShader(program, glVertexShader);
		gl.attachShader(program, glFragmentShader); // Force a particular attribute to index 0.

		if (parameters.index0AttributeName !== undefined) {
			gl.bindAttribLocation(program, 0, parameters.index0AttributeName);
		} else if (parameters.morphTargets === true) {
			// programs with morphTargets displace position out of attribute 0
			gl.bindAttribLocation(program, 0, 'position');
		}

		gl.linkProgram(program); // check for link errors

		if (renderer.debug.checkShaderErrors) {
			const programLog = gl.getProgramInfoLog(program).trim();
			const vertexLog = gl.getShaderInfoLog(glVertexShader).trim();
			const fragmentLog = gl.getShaderInfoLog(glFragmentShader).trim();
			let runnable = true;
			let haveDiagnostics = true;

			if (gl.getProgramParameter(program, gl.LINK_STATUS) === false) {
				runnable = false;
				const vertexErrors = getShaderErrors(gl, glVertexShader, 'vertex');
				const fragmentErrors = getShaderErrors(gl, glFragmentShader, 'fragment');
				console.error('THREE.WebGLProgram: Shader Error ' + gl.getError() + ' - ' + 'VALIDATE_STATUS ' + gl.getProgramParameter(program, gl.VALIDATE_STATUS) + '\n\n' + 'Program Info Log: ' + programLog + '\n' + vertexErrors + '\n' + fragmentErrors);
			} else if (programLog !== '') {
				console.warn('THREE.WebGLProgram: Program Info Log:', programLog);
			} else if (vertexLog === '' || fragmentLog === '') {
				haveDiagnostics = false;
			}

			if (haveDiagnostics) {
				this.diagnostics = {
					runnable: runnable,
					programLog: programLog,
					vertexShader: {
						log: vertexLog,
						prefix: prefixVertex
					},
					fragmentShader: {
						log: fragmentLog,
						prefix: prefixFragment
					}
				};
			}
		} // Clean up
		// Crashes in iOS9 and iOS10. #18402
		// gl.detachShader( program, glVertexShader );
		// gl.detachShader( program, glFragmentShader );


		gl.deleteShader(glVertexShader);
		gl.deleteShader(glFragmentShader); // set up caching for uniform locations

		let cachedUniforms;

		this.getUniforms = function () {
			if (cachedUniforms === undefined) {
				cachedUniforms = new WebGLUniforms(gl, program);
			}

			return cachedUniforms;
		}; // set up caching for attribute locations


		let cachedAttributes;

		this.getAttributes = function () {
			if (cachedAttributes === undefined) {
				cachedAttributes = fetchAttributeLocations(gl, program);
			}

			return cachedAttributes;
		}; // free resource


		this.destroy = function () {
			bindingStates.releaseStatesOfProgram(this);
			gl.deleteProgram(program);
			this.program = undefined;
		}; //


		this.name = parameters.shaderName;
		this.id = programIdCount++;
		this.cacheKey = cacheKey;
		this.usedTimes = 1;
		this.program = program;
		this.vertexShader = glVertexShader;
		this.fragmentShader = glFragmentShader;
		return this;
	}

	function WebGLPrograms(renderer, cubemaps, cubeuvmaps, extensions, capabilities, bindingStates, clipping) {
		const programs = [];
		const isWebGL2 = capabilities.isWebGL2;
		const logarithmicDepthBuffer = capabilities.logarithmicDepthBuffer;
		const floatVertexTextures = capabilities.floatVertexTextures;
		const maxVertexUniforms = capabilities.maxVertexUniforms;
		const vertexTextures = capabilities.vertexTextures;
		let precision = capabilities.precision;
		const shaderIDs = {
			MeshDepthMaterial: 'depth',
			MeshDistanceMaterial: 'distanceRGBA',
			MeshNormalMaterial: 'normal',
			MeshBasicMaterial: 'basic',
			MeshLambertMaterial: 'lambert',
			MeshPhongMaterial: 'phong',
			MeshToonMaterial: 'toon',
			MeshStandardMaterial: 'physical',
			MeshPhysicalMaterial: 'physical',
			MeshMatcapMaterial: 'matcap',
			LineBasicMaterial: 'basic',
			LineDashedMaterial: 'dashed',
			PointsMaterial: 'points',
			ShadowMaterial: 'shadow',
			SpriteMaterial: 'sprite'
		};
		const parameterNames = ['precision', 'isWebGL2', 'supportsVertexTextures', 'outputEncoding', 'instancing', 'instancingColor', 'map', 'mapEncoding', 'matcap', 'matcapEncoding', 'envMap', 'envMapMode', 'envMapEncoding', 'envMapCubeUV', 'lightMap', 'lightMapEncoding', 'aoMap', 'emissiveMap', 'emissiveMapEncoding', 'bumpMap', 'normalMap', 'objectSpaceNormalMap', 'tangentSpaceNormalMap', 'clearcoat', 'clearcoatMap', 'clearcoatRoughnessMap', 'clearcoatNormalMap', 'displacementMap', 'specularMap', 'specularIntensityMap', 'specularTintMap', 'specularTintMapEncoding', 'roughnessMap', 'metalnessMap', 'gradientMap', 'alphaMap', 'alphaTest', 'combine', 'vertexColors', 'vertexAlphas', 'vertexTangents', 'vertexUvs', 'uvsVertexOnly', 'fog', 'useFog', 'fogExp2', 'flatShading', 'sizeAttenuation', 'logarithmicDepthBuffer', 'skinning', 'maxBones', 'useVertexTexture', 'morphTargets', 'morphNormals', 'morphTargetsCount', 'premultipliedAlpha', 'numDirLights', 'numPointLights', 'numSpotLights', 'numHemiLights', 'numRectAreaLights', 'numDirLightShadows', 'numPointLightShadows', 'numSpotLightShadows', 'shadowMapEnabled', 'shadowMapType', 'toneMapping', 'physicallyCorrectLights', 'doubleSided', 'flipSided', 'numClippingPlanes', 'numClipIntersection', 'depthPacking', 'dithering', 'format', 'sheen', 'transmission', 'transmissionMap', 'thicknessMap'];

		function getMaxBones(object) {
			const skeleton = object.skeleton;
			const bones = skeleton.bones;

			if (floatVertexTextures) {
				return 1024;
			} else {
				// default for when object is not specified
				// ( for example when prebuilding shader to be used with multiple objects )
				//
				//	- leave some extra space for other uniforms
				//	- limit here is ANGLE's 254 max uniform vectors
				//		(up to 54 should be safe)
				const nVertexUniforms = maxVertexUniforms;
				const nVertexMatrices = Math.floor((nVertexUniforms - 20) / 4);
				const maxBones = Math.min(nVertexMatrices, bones.length);

				if (maxBones < bones.length) {
					console.warn('THREE.WebGLRenderer: Skeleton has ' + bones.length + ' bones. This GPU supports ' + maxBones + '.');
					return 0;
				}

				return maxBones;
			}
		}

		function getTextureEncodingFromMap(map) {
			let encoding;

			if (map && map.isTexture) {
				encoding = map.encoding;
			} else if (map && map.isWebGLRenderTarget) {
				console.warn('THREE.WebGLPrograms.getTextureEncodingFromMap: don\'t use render targets as textures. Use their .texture property instead.');
				encoding = map.texture.encoding;
			} else {
				encoding = LinearEncoding;
			}

			if (isWebGL2 && map && map.isTexture && map.format === RGBAFormat && map.type === UnsignedByteType && map.encoding === sRGBEncoding) {
				encoding = LinearEncoding; // disable inline decode for sRGB textures in WebGL 2
			}

			return encoding;
		}

		function getParameters(material, lights, shadows, scene, object) {
			const fog = scene.fog;
			const environment = material.isMeshStandardMaterial ? scene.environment : null;
			const envMap = (material.isMeshStandardMaterial ? cubeuvmaps : cubemaps).get(material.envMap || environment);
			const shaderID = shaderIDs[material.type]; // heuristics to create shader parameters according to lights in the scene
			// (not to blow over maxLights budget)

			const maxBones = object.isSkinnedMesh ? getMaxBones(object) : 0;

			if (material.precision !== null) {
				precision = capabilities.getMaxPrecision(material.precision);

				if (precision !== material.precision) {
					console.warn('THREE.WebGLProgram.getParameters:', material.precision, 'not supported, using', precision, 'instead.');
				}
			}

			let vertexShader, fragmentShader;

			if (shaderID) {
				const shader = ShaderLib[shaderID];
				vertexShader = shader.vertexShader;
				fragmentShader = shader.fragmentShader;
			} else {
				vertexShader = material.vertexShader;
				fragmentShader = material.fragmentShader;
			}

			const currentRenderTarget = renderer.getRenderTarget();
			const useAlphaTest = material.alphaTest > 0;
			const useClearcoat = material.clearcoat > 0;
			const parameters = {
				isWebGL2: isWebGL2,
				shaderID: shaderID,
				shaderName: material.type,
				vertexShader: vertexShader,
				fragmentShader: fragmentShader,
				defines: material.defines,
				isRawShaderMaterial: material.isRawShaderMaterial === true,
				glslVersion: material.glslVersion,
				precision: precision,
				instancing: object.isInstancedMesh === true,
				instancingColor: object.isInstancedMesh === true && object.instanceColor !== null,
				supportsVertexTextures: vertexTextures,
				outputEncoding: currentRenderTarget !== null ? getTextureEncodingFromMap(currentRenderTarget.texture) : renderer.outputEncoding,
				map: !!material.map,
				mapEncoding: getTextureEncodingFromMap(material.map),
				matcap: !!material.matcap,
				matcapEncoding: getTextureEncodingFromMap(material.matcap),
				envMap: !!envMap,
				envMapMode: envMap && envMap.mapping,
				envMapEncoding: getTextureEncodingFromMap(envMap),
				envMapCubeUV: !!envMap && (envMap.mapping === CubeUVReflectionMapping || envMap.mapping === CubeUVRefractionMapping),
				lightMap: !!material.lightMap,
				lightMapEncoding: getTextureEncodingFromMap(material.lightMap),
				aoMap: !!material.aoMap,
				emissiveMap: !!material.emissiveMap,
				emissiveMapEncoding: getTextureEncodingFromMap(material.emissiveMap),
				bumpMap: !!material.bumpMap,
				normalMap: !!material.normalMap,
				objectSpaceNormalMap: material.normalMapType === ObjectSpaceNormalMap,
				tangentSpaceNormalMap: material.normalMapType === TangentSpaceNormalMap,
				clearcoat: useClearcoat,
				clearcoatMap: useClearcoat && !!material.clearcoatMap,
				clearcoatRoughnessMap: useClearcoat && !!material.clearcoatRoughnessMap,
				clearcoatNormalMap: useClearcoat && !!material.clearcoatNormalMap,
				displacementMap: !!material.displacementMap,
				roughnessMap: !!material.roughnessMap,
				metalnessMap: !!material.metalnessMap,
				specularMap: !!material.specularMap,
				specularIntensityMap: !!material.specularIntensityMap,
				specularTintMap: !!material.specularTintMap,
				specularTintMapEncoding: getTextureEncodingFromMap(material.specularTintMap),
				alphaMap: !!material.alphaMap,
				alphaTest: useAlphaTest,
				gradientMap: !!material.gradientMap,
				sheen: material.sheen > 0,
				transmission: material.transmission > 0,
				transmissionMap: !!material.transmissionMap,
				thicknessMap: !!material.thicknessMap,
				combine: material.combine,
				vertexTangents: !!material.normalMap && !!object.geometry && !!object.geometry.attributes.tangent,
				vertexColors: material.vertexColors,
				vertexAlphas: material.vertexColors === true && !!object.geometry && !!object.geometry.attributes.color && object.geometry.attributes.color.itemSize === 4,
				vertexUvs: !!material.map || !!material.bumpMap || !!material.normalMap || !!material.specularMap || !!material.alphaMap || !!material.emissiveMap || !!material.roughnessMap || !!material.metalnessMap || !!material.clearcoatMap || !!material.clearcoatRoughnessMap || !!material.clearcoatNormalMap || !!material.displacementMap || !!material.transmissionMap || !!material.thicknessMap || !!material.specularIntensityMap || !!material.specularTintMap,
				uvsVertexOnly: !(!!material.map || !!material.bumpMap || !!material.normalMap || !!material.specularMap || !!material.alphaMap || !!material.emissiveMap || !!material.roughnessMap || !!material.metalnessMap || !!material.clearcoatNormalMap || material.transmission > 0 || !!material.transmissionMap || !!material.thicknessMap || !!material.specularIntensityMap || !!material.specularTintMap) && !!material.displacementMap,
				fog: !!fog,
				useFog: material.fog,
				fogExp2: fog && fog.isFogExp2,
				flatShading: !!material.flatShading,
				sizeAttenuation: material.sizeAttenuation,
				logarithmicDepthBuffer: logarithmicDepthBuffer,
				skinning: object.isSkinnedMesh === true && maxBones > 0,
				maxBones: maxBones,
				useVertexTexture: floatVertexTextures,
				morphTargets: !!object.geometry && !!object.geometry.morphAttributes.position,
				morphNormals: !!object.geometry && !!object.geometry.morphAttributes.normal,
				morphTargetsCount: !!object.geometry && !!object.geometry.morphAttributes.position ? object.geometry.morphAttributes.position.length : 0,
				numDirLights: lights.directional.length,
				numPointLights: lights.point.length,
				numSpotLights: lights.spot.length,
				numRectAreaLights: lights.rectArea.length,
				numHemiLights: lights.hemi.length,
				numDirLightShadows: lights.directionalShadowMap.length,
				numPointLightShadows: lights.pointShadowMap.length,
				numSpotLightShadows: lights.spotShadowMap.length,
				numClippingPlanes: clipping.numPlanes,
				numClipIntersection: clipping.numIntersection,
				format: material.format,
				dithering: material.dithering,
				shadowMapEnabled: renderer.shadowMap.enabled && shadows.length > 0,
				shadowMapType: renderer.shadowMap.type,
				toneMapping: material.toneMapped ? renderer.toneMapping : NoToneMapping,
				physicallyCorrectLights: renderer.physicallyCorrectLights,
				premultipliedAlpha: material.premultipliedAlpha,
				doubleSided: material.side === DoubleSide,
				flipSided: material.side === BackSide,
				depthPacking: material.depthPacking !== undefined ? material.depthPacking : false,
				index0AttributeName: material.index0AttributeName,
				extensionDerivatives: material.extensions && material.extensions.derivatives,
				extensionFragDepth: material.extensions && material.extensions.fragDepth,
				extensionDrawBuffers: material.extensions && material.extensions.drawBuffers,
				extensionShaderTextureLOD: material.extensions && material.extensions.shaderTextureLOD,
				rendererExtensionFragDepth: isWebGL2 || extensions.has('EXT_frag_depth'),
				rendererExtensionDrawBuffers: isWebGL2 || extensions.has('WEBGL_draw_buffers'),
				rendererExtensionShaderTextureLod: isWebGL2 || extensions.has('EXT_shader_texture_lod'),
				customProgramCacheKey: material.customProgramCacheKey()
			};
			return parameters;
		}

		function getProgramCacheKey(parameters) {
			const array = [];

			if (parameters.shaderID) {
				array.push(parameters.shaderID);
			} else {
				array.push(parameters.fragmentShader);
				array.push(parameters.vertexShader);
			}

			if (parameters.defines !== undefined) {
				for (const name in parameters.defines) {
					array.push(name);
					array.push(parameters.defines[name]);
				}
			}

			if (parameters.isRawShaderMaterial === false) {
				for (let i = 0; i < parameterNames.length; i++) {
					array.push(parameters[parameterNames[i]]);
				}

				array.push(renderer.outputEncoding);
				array.push(renderer.gammaFactor);
			}

			array.push(parameters.customProgramCacheKey);
			return array.join();
		}

		function getUniforms(material) {
			const shaderID = shaderIDs[material.type];
			let uniforms;

			if (shaderID) {
				const shader = ShaderLib[shaderID];
				uniforms = UniformsUtils.clone(shader.uniforms);
			} else {
				uniforms = material.uniforms;
			}

			return uniforms;
		}

		function acquireProgram(parameters, cacheKey) {
			let program; // Check if code has been already compiled

			for (let p = 0, pl = programs.length; p < pl; p++) {
				const preexistingProgram = programs[p];

				if (preexistingProgram.cacheKey === cacheKey) {
					program = preexistingProgram;
					++program.usedTimes;
					break;
				}
			}

			if (program === undefined) {
				program = new WebGLProgram(renderer, cacheKey, parameters, bindingStates);
				programs.push(program);
			}

			return program;
		}

		function releaseProgram(program) {
			if (--program.usedTimes === 0) {
				// Remove from unordered set
				const i = programs.indexOf(program);
				programs[i] = programs[programs.length - 1];
				programs.pop(); // Free WebGL resources

				program.destroy();
			}
		}

		return {
			getParameters: getParameters,
			getProgramCacheKey: getProgramCacheKey,
			getUniforms: getUniforms,
			acquireProgram: acquireProgram,
			releaseProgram: releaseProgram,
			// Exposed for resource monitoring & error feedback via renderer.info:
			programs: programs
		};
	}

	function WebGLProperties() {
		let properties = new WeakMap();

		function get(object) {
			let map = properties.get(object);

			if (map === undefined) {
				map = {};
				properties.set(object, map);
			}

			return map;
		}

		function remove(object) {
			properties.delete(object);
		}

		function update(object, key, value) {
			properties.get(object)[key] = value;
		}

		function dispose() {
			properties = new WeakMap();
		}

		return {
			get: get,
			remove: remove,
			update: update,
			dispose: dispose
		};
	}

	function painterSortStable(a, b) {
		if (a.groupOrder !== b.groupOrder) {
			return a.groupOrder - b.groupOrder;
		} else if (a.renderOrder !== b.renderOrder) {
			return a.renderOrder - b.renderOrder;
		} else if (a.program !== b.program) {
			return a.program.id - b.program.id;
		} else if (a.material.id !== b.material.id) {
			return a.material.id - b.material.id;
		} else if (a.z !== b.z) {
			return a.z - b.z;
		} else {
			return a.id - b.id;
		}
	}

	function reversePainterSortStable(a, b) {
		if (a.groupOrder !== b.groupOrder) {
			return a.groupOrder - b.groupOrder;
		} else if (a.renderOrder !== b.renderOrder) {
			return a.renderOrder - b.renderOrder;
		} else if (a.z !== b.z) {
			return b.z - a.z;
		} else {
			return a.id - b.id;
		}
	}

	function WebGLRenderList(properties) {
		const renderItems = [];
		let renderItemsIndex = 0;
		const opaque = [];
		const transmissive = [];
		const transparent = [];
		const defaultProgram = {
			id: -1
		};

		function init() {
			renderItemsIndex = 0;
			opaque.length = 0;
			transmissive.length = 0;
			transparent.length = 0;
		}

		function getNextRenderItem(object, geometry, material, groupOrder, z, group) {
			let renderItem = renderItems[renderItemsIndex];
			const materialProperties = properties.get(material);

			if (renderItem === undefined) {
				renderItem = {
					id: object.id,
					object: object,
					geometry: geometry,
					material: material,
					program: materialProperties.program || defaultProgram,
					groupOrder: groupOrder,
					renderOrder: object.renderOrder,
					z: z,
					group: group
				};
				renderItems[renderItemsIndex] = renderItem;
			} else {
				renderItem.id = object.id;
				renderItem.object = object;
				renderItem.geometry = geometry;
				renderItem.material = material;
				renderItem.program = materialProperties.program || defaultProgram;
				renderItem.groupOrder = groupOrder;
				renderItem.renderOrder = object.renderOrder;
				renderItem.z = z;
				renderItem.group = group;
			}

			renderItemsIndex++;
			return renderItem;
		}

		function push(object, geometry, material, groupOrder, z, group) {
			const renderItem = getNextRenderItem(object, geometry, material, groupOrder, z, group);

			if (material.transmission > 0.0) {
				transmissive.push(renderItem);
			} else if (material.transparent === true) {
				transparent.push(renderItem);
			} else {
				opaque.push(renderItem);
			}
		}

		function unshift(object, geometry, material, groupOrder, z, group) {
			const renderItem = getNextRenderItem(object, geometry, material, groupOrder, z, group);

			if (material.transmission > 0.0) {
				transmissive.unshift(renderItem);
			} else if (material.transparent === true) {
				transparent.unshift(renderItem);
			} else {
				opaque.unshift(renderItem);
			}
		}

		function sort(customOpaqueSort, customTransparentSort) {
			if (opaque.length > 1) opaque.sort(customOpaqueSort || painterSortStable);
			if (transmissive.length > 1) transmissive.sort(customTransparentSort || reversePainterSortStable);
			if (transparent.length > 1) transparent.sort(customTransparentSort || reversePainterSortStable);
		}

		function finish() {
			// Clear references from inactive renderItems in the list
			for (let i = renderItemsIndex, il = renderItems.length; i < il; i++) {
				const renderItem = renderItems[i];
				if (renderItem.id === null) break;
				renderItem.id = null;
				renderItem.object = null;
				renderItem.geometry = null;
				renderItem.material = null;
				renderItem.program = null;
				renderItem.group = null;
			}
		}

		return {
			opaque: opaque,
			transmissive: transmissive,
			transparent: transparent,
			init: init,
			push: push,
			unshift: unshift,
			finish: finish,
			sort: sort
		};
	}

	function WebGLRenderLists(properties) {
		let lists = new WeakMap();

		function get(scene, renderCallDepth) {
			let list;

			if (lists.has(scene) === false) {
				list = new WebGLRenderList(properties);
				lists.set(scene, [list]);
			} else {
				if (renderCallDepth >= lists.get(scene).length) {
					list = new WebGLRenderList(properties);
					lists.get(scene).push(list);
				} else {
					list = lists.get(scene)[renderCallDepth];
				}
			}

			return list;
		}

		function dispose() {
			lists = new WeakMap();
		}

		return {
			get: get,
			dispose: dispose
		};
	}

	function UniformsCache() {
		const lights = {};
		return {
			get: function (light) {
				if (lights[light.id] !== undefined) {
					return lights[light.id];
				}

				let uniforms;

				switch (light.type) {
					case 'DirectionalLight':
						uniforms = {
							direction: new Vector3(),
							color: new Color()
						};
						break;

					case 'SpotLight':
						uniforms = {
							position: new Vector3(),
							direction: new Vector3(),
							color: new Color(),
							distance: 0,
							coneCos: 0,
							penumbraCos: 0,
							decay: 0
						};
						break;

					case 'PointLight':
						uniforms = {
							position: new Vector3(),
							color: new Color(),
							distance: 0,
							decay: 0
						};
						break;

					case 'HemisphereLight':
						uniforms = {
							direction: new Vector3(),
							skyColor: new Color(),
							groundColor: new Color()
						};
						break;

					case 'RectAreaLight':
						uniforms = {
							color: new Color(),
							position: new Vector3(),
							halfWidth: new Vector3(),
							halfHeight: new Vector3()
						};
						break;
				}

				lights[light.id] = uniforms;
				return uniforms;
			}
		};
	}

	function ShadowUniformsCache() {
		const lights = {};
		return {
			get: function (light) {
				if (lights[light.id] !== undefined) {
					return lights[light.id];
				}

				let uniforms;

				switch (light.type) {
					case 'DirectionalLight':
						uniforms = {
							shadowBias: 0,
							shadowNormalBias: 0,
							shadowRadius: 1,
							shadowMapSize: new Vector2()
						};
						break;

					case 'SpotLight':
						uniforms = {
							shadowBias: 0,
							shadowNormalBias: 0,
							shadowRadius: 1,
							shadowMapSize: new Vector2()
						};
						break;

					case 'PointLight':
						uniforms = {
							shadowBias: 0,
							shadowNormalBias: 0,
							shadowRadius: 1,
							shadowMapSize: new Vector2(),
							shadowCameraNear: 1,
							shadowCameraFar: 1000
						};
						break;
					// TODO (abelnation): set RectAreaLight shadow uniforms
				}

				lights[light.id] = uniforms;
				return uniforms;
			}
		};
	}

	let nextVersion = 0;

	function shadowCastingLightsFirst(lightA, lightB) {
		return (lightB.castShadow ? 1 : 0) - (lightA.castShadow ? 1 : 0);
	}

	function WebGLLights(extensions, capabilities) {
		const cache = new UniformsCache();
		const shadowCache = ShadowUniformsCache();
		const state = {
			version: 0,
			hash: {
				directionalLength: -1,
				pointLength: -1,
				spotLength: -1,
				rectAreaLength: -1,
				hemiLength: -1,
				numDirectionalShadows: -1,
				numPointShadows: -1,
				numSpotShadows: -1
			},
			ambient: [0, 0, 0],
			probe: [],
			directional: [],
			directionalShadow: [],
			directionalShadowMap: [],
			directionalShadowMatrix: [],
			spot: [],
			spotShadow: [],
			spotShadowMap: [],
			spotShadowMatrix: [],
			rectArea: [],
			rectAreaLTC1: null,
			rectAreaLTC2: null,
			point: [],
			pointShadow: [],
			pointShadowMap: [],
			pointShadowMatrix: [],
			hemi: []
		};

		for (let i = 0; i < 9; i++) state.probe.push(new Vector3());

		const vector3 = new Vector3();
		const matrix4 = new Matrix4();
		const matrix42 = new Matrix4();

		function setup(lights, physicallyCorrectLights) {
			let r = 0,
					g = 0,
					b = 0;

			for (let i = 0; i < 9; i++) state.probe[i].set(0, 0, 0);

			let directionalLength = 0;
			let pointLength = 0;
			let spotLength = 0;
			let rectAreaLength = 0;
			let hemiLength = 0;
			let numDirectionalShadows = 0;
			let numPointShadows = 0;
			let numSpotShadows = 0;
			lights.sort(shadowCastingLightsFirst); // artist-friendly light intensity scaling factor

			const scaleFactor = physicallyCorrectLights !== true ? Math.PI : 1;

			for (let i = 0, l = lights.length; i < l; i++) {
				const light = lights[i];
				const color = light.color;
				const intensity = light.intensity;
				const distance = light.distance;
				const shadowMap = light.shadow && light.shadow.map ? light.shadow.map.texture : null;

				if (light.isAmbientLight) {
					r += color.r * intensity * scaleFactor;
					g += color.g * intensity * scaleFactor;
					b += color.b * intensity * scaleFactor;
				} else if (light.isLightProbe) {
					for (let j = 0; j < 9; j++) {
						state.probe[j].addScaledVector(light.sh.coefficients[j], intensity);
					}
				} else if (light.isDirectionalLight) {
					const uniforms = cache.get(light);
					uniforms.color.copy(light.color).multiplyScalar(light.intensity * scaleFactor);

					if (light.castShadow) {
						const shadow = light.shadow;
						const shadowUniforms = shadowCache.get(light);
						shadowUniforms.shadowBias = shadow.bias;
						shadowUniforms.shadowNormalBias = shadow.normalBias;
						shadowUniforms.shadowRadius = shadow.radius;
						shadowUniforms.shadowMapSize = shadow.mapSize;
						state.directionalShadow[directionalLength] = shadowUniforms;
						state.directionalShadowMap[directionalLength] = shadowMap;
						state.directionalShadowMatrix[directionalLength] = light.shadow.matrix;
						numDirectionalShadows++;
					}

					state.directional[directionalLength] = uniforms;
					directionalLength++;
				} else if (light.isSpotLight) {
					const uniforms = cache.get(light);
					uniforms.position.setFromMatrixPosition(light.matrixWorld);
					uniforms.color.copy(color).multiplyScalar(intensity * scaleFactor);
					uniforms.distance = distance;
					uniforms.coneCos = Math.cos(light.angle);
					uniforms.penumbraCos = Math.cos(light.angle * (1 - light.penumbra));
					uniforms.decay = light.decay;

					if (light.castShadow) {
						const shadow = light.shadow;
						const shadowUniforms = shadowCache.get(light);
						shadowUniforms.shadowBias = shadow.bias;
						shadowUniforms.shadowNormalBias = shadow.normalBias;
						shadowUniforms.shadowRadius = shadow.radius;
						shadowUniforms.shadowMapSize = shadow.mapSize;
						state.spotShadow[spotLength] = shadowUniforms;
						state.spotShadowMap[spotLength] = shadowMap;
						state.spotShadowMatrix[spotLength] = light.shadow.matrix;
						numSpotShadows++;
					}

					state.spot[spotLength] = uniforms;
					spotLength++;
				} else if (light.isRectAreaLight) {
					const uniforms = cache.get(light); // (a) intensity is the total visible light emitted
					//uniforms.color.copy( color ).multiplyScalar( intensity / ( light.width * light.height * Math.PI ) );
					// (b) intensity is the brightness of the light

					uniforms.color.copy(color).multiplyScalar(intensity);
					uniforms.halfWidth.set(light.width * 0.5, 0.0, 0.0);
					uniforms.halfHeight.set(0.0, light.height * 0.5, 0.0);
					state.rectArea[rectAreaLength] = uniforms;
					rectAreaLength++;
				} else if (light.isPointLight) {
					const uniforms = cache.get(light);
					uniforms.color.copy(light.color).multiplyScalar(light.intensity * scaleFactor);
					uniforms.distance = light.distance;
					uniforms.decay = light.decay;

					if (light.castShadow) {
						const shadow = light.shadow;
						const shadowUniforms = shadowCache.get(light);
						shadowUniforms.shadowBias = shadow.bias;
						shadowUniforms.shadowNormalBias = shadow.normalBias;
						shadowUniforms.shadowRadius = shadow.radius;
						shadowUniforms.shadowMapSize = shadow.mapSize;
						shadowUniforms.shadowCameraNear = shadow.camera.near;
						shadowUniforms.shadowCameraFar = shadow.camera.far;
						state.pointShadow[pointLength] = shadowUniforms;
						state.pointShadowMap[pointLength] = shadowMap;
						state.pointShadowMatrix[pointLength] = light.shadow.matrix;
						numPointShadows++;
					}

					state.point[pointLength] = uniforms;
					pointLength++;
				} else if (light.isHemisphereLight) {
					const uniforms = cache.get(light);
					uniforms.skyColor.copy(light.color).multiplyScalar(intensity * scaleFactor);
					uniforms.groundColor.copy(light.groundColor).multiplyScalar(intensity * scaleFactor);
					state.hemi[hemiLength] = uniforms;
					hemiLength++;
				}
			}

			if (rectAreaLength > 0) {
				if (capabilities.isWebGL2) {
					// WebGL 2
					state.rectAreaLTC1 = UniformsLib.LTC_FLOAT_1;
					state.rectAreaLTC2 = UniformsLib.LTC_FLOAT_2;
				} else {
					// WebGL 1
					if (extensions.has('OES_texture_float_linear') === true) {
						state.rectAreaLTC1 = UniformsLib.LTC_FLOAT_1;
						state.rectAreaLTC2 = UniformsLib.LTC_FLOAT_2;
					} else if (extensions.has('OES_texture_half_float_linear') === true) {
						state.rectAreaLTC1 = UniformsLib.LTC_HALF_1;
						state.rectAreaLTC2 = UniformsLib.LTC_HALF_2;
					} else {
						console.error('THREE.WebGLRenderer: Unable to use RectAreaLight. Missing WebGL extensions.');
					}
				}
			}

			state.ambient[0] = r;
			state.ambient[1] = g;
			state.ambient[2] = b;
			const hash = state.hash;

			if (hash.directionalLength !== directionalLength || hash.pointLength !== pointLength || hash.spotLength !== spotLength || hash.rectAreaLength !== rectAreaLength || hash.hemiLength !== hemiLength || hash.numDirectionalShadows !== numDirectionalShadows || hash.numPointShadows !== numPointShadows || hash.numSpotShadows !== numSpotShadows) {
				state.directional.length = directionalLength;
				state.spot.length = spotLength;
				state.rectArea.length = rectAreaLength;
				state.point.length = pointLength;
				state.hemi.length = hemiLength;
				state.directionalShadow.length = numDirectionalShadows;
				state.directionalShadowMap.length = numDirectionalShadows;
				state.pointShadow.length = numPointShadows;
				state.pointShadowMap.length = numPointShadows;
				state.spotShadow.length = numSpotShadows;
				state.spotShadowMap.length = numSpotShadows;
				state.directionalShadowMatrix.length = numDirectionalShadows;
				state.pointShadowMatrix.length = numPointShadows;
				state.spotShadowMatrix.length = numSpotShadows;
				hash.directionalLength = directionalLength;
				hash.pointLength = pointLength;
				hash.spotLength = spotLength;
				hash.rectAreaLength = rectAreaLength;
				hash.hemiLength = hemiLength;
				hash.numDirectionalShadows = numDirectionalShadows;
				hash.numPointShadows = numPointShadows;
				hash.numSpotShadows = numSpotShadows;
				state.version = nextVersion++;
			}
		}

		function setupView(lights, camera) {
			let directionalLength = 0;
			let pointLength = 0;
			let spotLength = 0;
			let rectAreaLength = 0;
			let hemiLength = 0;
			const viewMatrix = camera.matrixWorldInverse;

			for (let i = 0, l = lights.length; i < l; i++) {
				const light = lights[i];

				if (light.isDirectionalLight) {
					const uniforms = state.directional[directionalLength];
					uniforms.direction.setFromMatrixPosition(light.matrixWorld);
					vector3.setFromMatrixPosition(light.target.matrixWorld);
					uniforms.direction.sub(vector3);
					uniforms.direction.transformDirection(viewMatrix);
					directionalLength++;
				} else if (light.isSpotLight) {
					const uniforms = state.spot[spotLength];
					uniforms.position.setFromMatrixPosition(light.matrixWorld);
					uniforms.position.applyMatrix4(viewMatrix);
					uniforms.direction.setFromMatrixPosition(light.matrixWorld);
					vector3.setFromMatrixPosition(light.target.matrixWorld);
					uniforms.direction.sub(vector3);
					uniforms.direction.transformDirection(viewMatrix);
					spotLength++;
				} else if (light.isRectAreaLight) {
					const uniforms = state.rectArea[rectAreaLength];
					uniforms.position.setFromMatrixPosition(light.matrixWorld);
					uniforms.position.applyMatrix4(viewMatrix); // extract local rotation of light to derive width/height half vectors

					matrix42.identity();
					matrix4.copy(light.matrixWorld);
					matrix4.premultiply(viewMatrix);
					matrix42.extractRotation(matrix4);
					uniforms.halfWidth.set(light.width * 0.5, 0.0, 0.0);
					uniforms.halfHeight.set(0.0, light.height * 0.5, 0.0);
					uniforms.halfWidth.applyMatrix4(matrix42);
					uniforms.halfHeight.applyMatrix4(matrix42);
					rectAreaLength++;
				} else if (light.isPointLight) {
					const uniforms = state.point[pointLength];
					uniforms.position.setFromMatrixPosition(light.matrixWorld);
					uniforms.position.applyMatrix4(viewMatrix);
					pointLength++;
				} else if (light.isHemisphereLight) {
					const uniforms = state.hemi[hemiLength];
					uniforms.direction.setFromMatrixPosition(light.matrixWorld);
					uniforms.direction.transformDirection(viewMatrix);
					uniforms.direction.normalize();
					hemiLength++;
				}
			}
		}

		return {
			setup: setup,
			setupView: setupView,
			state: state
		};
	}

	function WebGLRenderState(extensions, capabilities) {
		const lights = new WebGLLights(extensions, capabilities);
		const lightsArray = [];
		const shadowsArray = [];

		function init() {
			lightsArray.length = 0;
			shadowsArray.length = 0;
		}

		function pushLight(light) {
			lightsArray.push(light);
		}

		function pushShadow(shadowLight) {
			shadowsArray.push(shadowLight);
		}

		function setupLights(physicallyCorrectLights) {
			lights.setup(lightsArray, physicallyCorrectLights);
		}

		function setupLightsView(camera) {
			lights.setupView(lightsArray, camera);
		}

		const state = {
			lightsArray: lightsArray,
			shadowsArray: shadowsArray,
			lights: lights
		};
		return {
			init: init,
			state: state,
			setupLights: setupLights,
			setupLightsView: setupLightsView,
			pushLight: pushLight,
			pushShadow: pushShadow
		};
	}

	function WebGLRenderStates(extensions, capabilities) {
		let renderStates = new WeakMap();

		function get(scene, renderCallDepth = 0) {
			let renderState;

			if (renderStates.has(scene) === false) {
				renderState = new WebGLRenderState(extensions, capabilities);
				renderStates.set(scene, [renderState]);
			} else {
				if (renderCallDepth >= renderStates.get(scene).length) {
					renderState = new WebGLRenderState(extensions, capabilities);
					renderStates.get(scene).push(renderState);
				} else {
					renderState = renderStates.get(scene)[renderCallDepth];
				}
			}

			return renderState;
		}

		function dispose() {
			renderStates = new WeakMap();
		}

		return {
			get: get,
			dispose: dispose
		};
	}

	/**
	 * parameters = {
	 *
	 *	opacity: <float>,
	 *
	 *	map: new THREE.Texture( <Image> ),
	 *
	 *	alphaMap: new THREE.Texture( <Image> ),
	 *
	 *	displacementMap: new THREE.Texture( <Image> ),
	 *	displacementScale: <float>,
	 *	displacementBias: <float>,
	 *
	 *	wireframe: <boolean>,
	 *	wireframeLinewidth: <float>
	 * }
	 */

	class MeshDepthMaterial extends Material {
		constructor(parameters) {
			super();
			this.type = 'MeshDepthMaterial';
			this.depthPacking = BasicDepthPacking;
			this.map = null;
			this.alphaMap = null;
			this.displacementMap = null;
			this.displacementScale = 1;
			this.displacementBias = 0;
			this.wireframe = false;
			this.wireframeLinewidth = 1;
			this.fog = false;
			this.setValues(parameters);
		}

		copy(source) {
			super.copy(source);
			this.depthPacking = source.depthPacking;
			this.map = source.map;
			this.alphaMap = source.alphaMap;
			this.displacementMap = source.displacementMap;
			this.displacementScale = source.displacementScale;
			this.displacementBias = source.displacementBias;
			this.wireframe = source.wireframe;
			this.wireframeLinewidth = source.wireframeLinewidth;
			return this;
		}

	}

	MeshDepthMaterial.prototype.isMeshDepthMaterial = true;

	/**
	 * parameters = {
	 *
	 *	referencePosition: <float>,
	 *	nearDistance: <float>,
	 *	farDistance: <float>,
	 *
	 *	map: new THREE.Texture( <Image> ),
	 *
	 *	alphaMap: new THREE.Texture( <Image> ),
	 *
	 *	displacementMap: new THREE.Texture( <Image> ),
	 *	displacementScale: <float>,
	 *	displacementBias: <float>
	 *
	 * }
	 */

	class MeshDistanceMaterial extends Material {
		constructor(parameters) {
			super();
			this.type = 'MeshDistanceMaterial';
			this.referencePosition = new Vector3();
			this.nearDistance = 1;
			this.farDistance = 1000;
			this.map = null;
			this.alphaMap = null;
			this.displacementMap = null;
			this.displacementScale = 1;
			this.displacementBias = 0;
			this.fog = false;
			this.setValues(parameters);
		}

		copy(source) {
			super.copy(source);
			this.referencePosition.copy(source.referencePosition);
			this.nearDistance = source.nearDistance;
			this.farDistance = source.farDistance;
			this.map = source.map;
			this.alphaMap = source.alphaMap;
			this.displacementMap = source.displacementMap;
			this.displacementScale = source.displacementScale;
			this.displacementBias = source.displacementBias;
			return this;
		}

	}

	MeshDistanceMaterial.prototype.isMeshDistanceMaterial = true;

	const vertex = "void main() {\n\tgl_Position = vec4( position, 1.0 );\n}";
	const fragment = "uniform sampler2D shadow_pass;\nuniform vec2 resolution;\nuniform float radius;\nuniform float samples;\n#include <packing>\nvoid main() {\n\tfloat mean = 0.0;\n\tfloat squared_mean = 0.0;\n\tfloat uvStride = samples <= 1.0 ? 0.0 : 2.0 / ( samples - 1.0 );\n\tfloat uvStart = samples <= 1.0 ? 0.0 : - 1.0;\n\tfor ( float i = 0.0; i < samples; i ++ ) {\n\t\tfloat uvOffset = uvStart + i * uvStride;\n\t\t#ifdef HORIZONTAL_PASS\n\t\t\tvec2 distribution = unpackRGBATo2Half( texture2D( shadow_pass, ( gl_FragCoord.xy + vec2( uvOffset, 0.0 ) * radius ) / resolution ) );\n\t\t\tmean += distribution.x;\n\t\t\tsquared_mean += distribution.y * distribution.y + distribution.x * distribution.x;\n\t\t#else\n\t\t\tfloat depth = unpackRGBAToDepth( texture2D( shadow_pass, ( gl_FragCoord.xy + vec2( 0.0, uvOffset ) * radius ) / resolution ) );\n\t\t\tmean += depth;\n\t\t\tsquared_mean += depth * depth;\n\t\t#endif\n\t}\n\tmean = mean / samples;\n\tsquared_mean = squared_mean / samples;\n\tfloat std_dev = sqrt( squared_mean - mean * mean );\n\tgl_FragColor = pack2HalfToRGBA( vec2( mean, std_dev ) );\n}";

	function WebGLShadowMap(_renderer, _objects, _capabilities) {
		let _frustum = new Frustum();

		const _shadowMapSize = new Vector2(),
					_viewportSize = new Vector2(),
					_viewport = new Vector4(),
					_depthMaterial = new MeshDepthMaterial({
			depthPacking: RGBADepthPacking
		}),
					_distanceMaterial = new MeshDistanceMaterial(),
					_materialCache = {},
					_maxTextureSize = _capabilities.maxTextureSize;

		const shadowSide = {
			0: BackSide,
			1: FrontSide,
			2: DoubleSide
		};
		const shadowMaterialVertical = new ShaderMaterial({
			uniforms: {
				shadow_pass: {
					value: null
				},
				resolution: {
					value: new Vector2()
				},
				radius: {
					value: 4.0
				},
				samples: {
					value: 8.0
				}
			},
			vertexShader: vertex,
			fragmentShader: fragment
		});
		const shadowMaterialHorizontal = shadowMaterialVertical.clone();
		shadowMaterialHorizontal.defines.HORIZONTAL_PASS = 1;
		const fullScreenTri = new BufferGeometry();
		fullScreenTri.setAttribute('position', new BufferAttribute(new Float32Array([-1, -1, 0.5, 3, -1, 0.5, -1, 3, 0.5]), 3));
		const fullScreenMesh = new Mesh(fullScreenTri, shadowMaterialVertical);
		const scope = this;
		this.enabled = false;
		this.autoUpdate = true;
		this.needsUpdate = false;
		this.type = PCFShadowMap;

		this.render = function (lights, scene, camera) {
			if (scope.enabled === false) return;
			if (scope.autoUpdate === false && scope.needsUpdate === false) return;
			if (lights.length === 0) return;

			const currentRenderTarget = _renderer.getRenderTarget();

			const activeCubeFace = _renderer.getActiveCubeFace();

			const activeMipmapLevel = _renderer.getActiveMipmapLevel();

			const _state = _renderer.state; // Set GL state for depth map.

			_state.setBlending(NoBlending);

			_state.buffers.color.setClear(1, 1, 1, 1);

			_state.buffers.depth.setTest(true);

			_state.setScissorTest(false); // render depth map


			for (let i = 0, il = lights.length; i < il; i++) {
				const light = lights[i];
				const shadow = light.shadow;

				if (shadow === undefined) {
					console.warn('THREE.WebGLShadowMap:', light, 'has no shadow.');
					continue;
				}

				if (shadow.autoUpdate === false && shadow.needsUpdate === false) continue;

				_shadowMapSize.copy(shadow.mapSize);

				const shadowFrameExtents = shadow.getFrameExtents();

				_shadowMapSize.multiply(shadowFrameExtents);

				_viewportSize.copy(shadow.mapSize);

				if (_shadowMapSize.x > _maxTextureSize || _shadowMapSize.y > _maxTextureSize) {
					if (_shadowMapSize.x > _maxTextureSize) {
						_viewportSize.x = Math.floor(_maxTextureSize / shadowFrameExtents.x);
						_shadowMapSize.x = _viewportSize.x * shadowFrameExtents.x;
						shadow.mapSize.x = _viewportSize.x;
					}

					if (_shadowMapSize.y > _maxTextureSize) {
						_viewportSize.y = Math.floor(_maxTextureSize / shadowFrameExtents.y);
						_shadowMapSize.y = _viewportSize.y * shadowFrameExtents.y;
						shadow.mapSize.y = _viewportSize.y;
					}
				}

				if (shadow.map === null && !shadow.isPointLightShadow && this.type === VSMShadowMap) {
					const pars = {
						minFilter: LinearFilter,
						magFilter: LinearFilter,
						format: RGBAFormat
					};
					shadow.map = new WebGLRenderTarget(_shadowMapSize.x, _shadowMapSize.y, pars);
					shadow.map.texture.name = light.name + '.shadowMap';
					shadow.mapPass = new WebGLRenderTarget(_shadowMapSize.x, _shadowMapSize.y, pars);
					shadow.camera.updateProjectionMatrix();
				}

				if (shadow.map === null) {
					const pars = {
						minFilter: NearestFilter,
						magFilter: NearestFilter,
						format: RGBAFormat
					};
					shadow.map = new WebGLRenderTarget(_shadowMapSize.x, _shadowMapSize.y, pars);
					shadow.map.texture.name = light.name + '.shadowMap';
					shadow.camera.updateProjectionMatrix();
				}

				_renderer.setRenderTarget(shadow.map);

				_renderer.clear();

				const viewportCount = shadow.getViewportCount();

				for (let vp = 0; vp < viewportCount; vp++) {
					const viewport = shadow.getViewport(vp);

					_viewport.set(_viewportSize.x * viewport.x, _viewportSize.y * viewport.y, _viewportSize.x * viewport.z, _viewportSize.y * viewport.w);

					_state.viewport(_viewport);

					shadow.updateMatrices(light, vp);
					_frustum = shadow.getFrustum();
					renderObject(scene, camera, shadow.camera, light, this.type);
				} // do blur pass for VSM


				if (!shadow.isPointLightShadow && this.type === VSMShadowMap) {
					VSMPass(shadow, camera);
				}

				shadow.needsUpdate = false;
			}

			scope.needsUpdate = false;

			_renderer.setRenderTarget(currentRenderTarget, activeCubeFace, activeMipmapLevel);
		};

		function VSMPass(shadow, camera) {
			const geometry = _objects.update(fullScreenMesh); // vertical pass


			shadowMaterialVertical.uniforms.shadow_pass.value = shadow.map.texture;
			shadowMaterialVertical.uniforms.resolution.value = shadow.mapSize;
			shadowMaterialVertical.uniforms.radius.value = shadow.radius;
			shadowMaterialVertical.uniforms.samples.value = shadow.blurSamples;

			_renderer.setRenderTarget(shadow.mapPass);

			_renderer.clear();

			_renderer.renderBufferDirect(camera, null, geometry, shadowMaterialVertical, fullScreenMesh, null); // horizontal pass


			shadowMaterialHorizontal.uniforms.shadow_pass.value = shadow.mapPass.texture;
			shadowMaterialHorizontal.uniforms.resolution.value = shadow.mapSize;
			shadowMaterialHorizontal.uniforms.radius.value = shadow.radius;
			shadowMaterialHorizontal.uniforms.samples.value = shadow.blurSamples;

			_renderer.setRenderTarget(shadow.map);

			_renderer.clear();

			_renderer.renderBufferDirect(camera, null, geometry, shadowMaterialHorizontal, fullScreenMesh, null);
		}

		function getDepthMaterial(object, geometry, material, light, shadowCameraNear, shadowCameraFar, type) {
			let result = null;
			const customMaterial = light.isPointLight === true ? object.customDistanceMaterial : object.customDepthMaterial;

			if (customMaterial !== undefined) {
				result = customMaterial;
			} else {
				result = light.isPointLight === true ? _distanceMaterial : _depthMaterial;
			}

			if (_renderer.localClippingEnabled && material.clipShadows === true && material.clippingPlanes.length !== 0 || material.displacementMap && material.displacementScale !== 0 || material.alphaMap && material.alphaTest > 0) {
				// in this case we need a unique material instance reflecting the
				// appropriate state
				const keyA = result.uuid,
							keyB = material.uuid;
				let materialsForVariant = _materialCache[keyA];

				if (materialsForVariant === undefined) {
					materialsForVariant = {};
					_materialCache[keyA] = materialsForVariant;
				}

				let cachedMaterial = materialsForVariant[keyB];

				if (cachedMaterial === undefined) {
					cachedMaterial = result.clone();
					materialsForVariant[keyB] = cachedMaterial;
				}

				result = cachedMaterial;
			}

			result.visible = material.visible;
			result.wireframe = material.wireframe;

			if (type === VSMShadowMap) {
				result.side = material.shadowSide !== null ? material.shadowSide : material.side;
			} else {
				result.side = material.shadowSide !== null ? material.shadowSide : shadowSide[material.side];
			}

			result.alphaMap = material.alphaMap;
			result.alphaTest = material.alphaTest;
			result.clipShadows = material.clipShadows;
			result.clippingPlanes = material.clippingPlanes;
			result.clipIntersection = material.clipIntersection;
			result.displacementMap = material.displacementMap;
			result.displacementScale = material.displacementScale;
			result.displacementBias = material.displacementBias;
			result.wireframeLinewidth = material.wireframeLinewidth;
			result.linewidth = material.linewidth;

			if (light.isPointLight === true && result.isMeshDistanceMaterial === true) {
				result.referencePosition.setFromMatrixPosition(light.matrixWorld);
				result.nearDistance = shadowCameraNear;
				result.farDistance = shadowCameraFar;
			}

			return result;
		}

		function renderObject(object, camera, shadowCamera, light, type) {
			if (object.visible === false) return;
			const visible = object.layers.test(camera.layers);

			if (visible && (object.isMesh || object.isLine || object.isPoints)) {
				if ((object.castShadow || object.receiveShadow && type === VSMShadowMap) && (!object.frustumCulled || _frustum.intersectsObject(object))) {
					object.modelViewMatrix.multiplyMatrices(shadowCamera.matrixWorldInverse, object.matrixWorld);

					const geometry = _objects.update(object);

					const material = object.material;

					if (Array.isArray(material)) {
						const groups = geometry.groups;

						for (let k = 0, kl = groups.length; k < kl; k++) {
							const group = groups[k];
							const groupMaterial = material[group.materialIndex];

							if (groupMaterial && groupMaterial.visible) {
								const depthMaterial = getDepthMaterial(object, geometry, groupMaterial, light, shadowCamera.near, shadowCamera.far, type);

								_renderer.renderBufferDirect(shadowCamera, null, geometry, depthMaterial, object, group);
							}
						}
					} else if (material.visible) {
						const depthMaterial = getDepthMaterial(object, geometry, material, light, shadowCamera.near, shadowCamera.far, type);

						_renderer.renderBufferDirect(shadowCamera, null, geometry, depthMaterial, object, null);
					}
				}
			}

			const children = object.children;

			for (let i = 0, l = children.length; i < l; i++) {
				renderObject(children[i], camera, shadowCamera, light, type);
			}
		}
	}

	function WebGLState(gl, extensions, capabilities) {
		const isWebGL2 = capabilities.isWebGL2;

		function ColorBuffer() {
			let locked = false;
			const color = new Vector4();
			let currentColorMask = null;
			const currentColorClear = new Vector4(0, 0, 0, 0);
			return {
				setMask: function (colorMask) {
					if (currentColorMask !== colorMask && !locked) {
						gl.colorMask(colorMask, colorMask, colorMask, colorMask);
						currentColorMask = colorMask;
					}
				},
				setLocked: function (lock) {
					locked = lock;
				},
				setClear: function (r, g, b, a, premultipliedAlpha) {
					if (premultipliedAlpha === true) {
						r *= a;
						g *= a;
						b *= a;
					}

					color.set(r, g, b, a);

					if (currentColorClear.equals(color) === false) {
						gl.clearColor(r, g, b, a);
						currentColorClear.copy(color);
					}
				},
				reset: function () {
					locked = false;
					currentColorMask = null;
					currentColorClear.set(-1, 0, 0, 0); // set to invalid state
				}
			};
		}

		function DepthBuffer() {
			let locked = false;
			let currentDepthMask = null;
			let currentDepthFunc = null;
			let currentDepthClear = null;
			return {
				setTest: function (depthTest) {
					if (depthTest) {
						enable(gl.DEPTH_TEST);
					} else {
						disable(gl.DEPTH_TEST);
					}
				},
				setMask: function (depthMask) {
					if (currentDepthMask !== depthMask && !locked) {
						gl.depthMask(depthMask);
						currentDepthMask = depthMask;
					}
				},
				setFunc: function (depthFunc) {
					if (currentDepthFunc !== depthFunc) {
						if (depthFunc) {
							switch (depthFunc) {
								case NeverDepth:
									gl.depthFunc(gl.NEVER);
									break;

								case AlwaysDepth:
									gl.depthFunc(gl.ALWAYS);
									break;

								case LessDepth:
									gl.depthFunc(gl.LESS);
									break;

								case LessEqualDepth:
									gl.depthFunc(gl.LEQUAL);
									break;

								case EqualDepth:
									gl.depthFunc(gl.EQUAL);
									break;

								case GreaterEqualDepth:
									gl.depthFunc(gl.GEQUAL);
									break;

								case GreaterDepth:
									gl.depthFunc(gl.GREATER);
									break;

								case NotEqualDepth:
									gl.depthFunc(gl.NOTEQUAL);
									break;

								default:
									gl.depthFunc(gl.LEQUAL);
							}
						} else {
							gl.depthFunc(gl.LEQUAL);
						}

						currentDepthFunc = depthFunc;
					}
				},
				setLocked: function (lock) {
					locked = lock;
				},
				setClear: function (depth) {
					if (currentDepthClear !== depth) {
						gl.clearDepth(depth);
						currentDepthClear = depth;
					}
				},
				reset: function () {
					locked = false;
					currentDepthMask = null;
					currentDepthFunc = null;
					currentDepthClear = null;
				}
			};
		}

		function StencilBuffer() {
			let locked = false;
			let currentStencilMask = null;
			let currentStencilFunc = null;
			let currentStencilRef = null;
			let currentStencilFuncMask = null;
			let currentStencilFail = null;
			let currentStencilZFail = null;
			let currentStencilZPass = null;
			let currentStencilClear = null;
			return {
				setTest: function (stencilTest) {
					if (!locked) {
						if (stencilTest) {
							enable(gl.STENCIL_TEST);
						} else {
							disable(gl.STENCIL_TEST);
						}
					}
				},
				setMask: function (stencilMask) {
					if (currentStencilMask !== stencilMask && !locked) {
						gl.stencilMask(stencilMask);
						currentStencilMask = stencilMask;
					}
				},
				setFunc: function (stencilFunc, stencilRef, stencilMask) {
					if (currentStencilFunc !== stencilFunc || currentStencilRef !== stencilRef || currentStencilFuncMask !== stencilMask) {
						gl.stencilFunc(stencilFunc, stencilRef, stencilMask);
						currentStencilFunc = stencilFunc;
						currentStencilRef = stencilRef;
						currentStencilFuncMask = stencilMask;
					}
				},
				setOp: function (stencilFail, stencilZFail, stencilZPass) {
					if (currentStencilFail !== stencilFail || currentStencilZFail !== stencilZFail || currentStencilZPass !== stencilZPass) {
						gl.stencilOp(stencilFail, stencilZFail, stencilZPass);
						currentStencilFail = stencilFail;
						currentStencilZFail = stencilZFail;
						currentStencilZPass = stencilZPass;
					}
				},
				setLocked: function (lock) {
					locked = lock;
				},
				setClear: function (stencil) {
					if (currentStencilClear !== stencil) {
						gl.clearStencil(stencil);
						currentStencilClear = stencil;
					}
				},
				reset: function () {
					locked = false;
					currentStencilMask = null;
					currentStencilFunc = null;
					currentStencilRef = null;
					currentStencilFuncMask = null;
					currentStencilFail = null;
					currentStencilZFail = null;
					currentStencilZPass = null;
					currentStencilClear = null;
				}
			};
		} //


		const colorBuffer = new ColorBuffer();
		const depthBuffer = new DepthBuffer();
		const stencilBuffer = new StencilBuffer();
		let enabledCapabilities = {};
		let xrFramebuffer = null;
		let currentBoundFramebuffers = {};
		let currentProgram = null;
		let currentBlendingEnabled = false;
		let currentBlending = null;
		let currentBlendEquation = null;
		let currentBlendSrc = null;
		let currentBlendDst = null;
		let currentBlendEquationAlpha = null;
		let currentBlendSrcAlpha = null;
		let currentBlendDstAlpha = null;
		let currentPremultipledAlpha = false;
		let currentFlipSided = null;
		let currentCullFace = null;
		let currentLineWidth = null;
		let currentPolygonOffsetFactor = null;
		let currentPolygonOffsetUnits = null;
		const maxTextures = gl.getParameter(gl.MAX_COMBINED_TEXTURE_IMAGE_UNITS);
		let lineWidthAvailable = false;
		let version = 0;
		const glVersion = gl.getParameter(gl.VERSION);

		if (glVersion.indexOf('WebGL') !== -1) {
			version = parseFloat(/^WebGL (\d)/.exec(glVersion)[1]);
			lineWidthAvailable = version >= 1.0;
		} else if (glVersion.indexOf('OpenGL ES') !== -1) {
			version = parseFloat(/^OpenGL ES (\d)/.exec(glVersion)[1]);
			lineWidthAvailable = version >= 2.0;
		}

		let currentTextureSlot = null;
		let currentBoundTextures = {};
		const scissorParam = gl.getParameter(gl.SCISSOR_BOX);
		const viewportParam = gl.getParameter(gl.VIEWPORT);
		const currentScissor = new Vector4().fromArray(scissorParam);
		const currentViewport = new Vector4().fromArray(viewportParam);

		function createTexture(type, target, count) {
			const data = new Uint8Array(4); // 4 is required to match default unpack alignment of 4.

			const texture = gl.createTexture();
			gl.bindTexture(type, texture);
			gl.texParameteri(type, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
			gl.texParameteri(type, gl.TEXTURE_MAG_FILTER, gl.NEAREST);

			for (let i = 0; i < count; i++) {
				gl.texImage2D(target + i, 0, gl.RGBA, 1, 1, 0, gl.RGBA, gl.UNSIGNED_BYTE, data);
			}

			return texture;
		}

		const emptyTextures = {};
		emptyTextures[gl.TEXTURE_2D] = createTexture(gl.TEXTURE_2D, gl.TEXTURE_2D, 1);
		emptyTextures[gl.TEXTURE_CUBE_MAP] = createTexture(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_CUBE_MAP_POSITIVE_X, 6); // init

		colorBuffer.setClear(0, 0, 0, 1);
		depthBuffer.setClear(1);
		stencilBuffer.setClear(0);
		enable(gl.DEPTH_TEST);
		depthBuffer.setFunc(LessEqualDepth);
		setFlipSided(false);
		setCullFace(CullFaceBack);
		enable(gl.CULL_FACE);
		setBlending(NoBlending); //

		function enable(id) {
			if (enabledCapabilities[id] !== true) {
				gl.enable(id);
				enabledCapabilities[id] = true;
			}
		}

		function disable(id) {
			if (enabledCapabilities[id] !== false) {
				gl.disable(id);
				enabledCapabilities[id] = false;
			}
		}

		function bindXRFramebuffer(framebuffer) {
			if (framebuffer !== xrFramebuffer) {
				gl.bindFramebuffer(gl.FRAMEBUFFER, framebuffer);
				xrFramebuffer = framebuffer;
			}
		}

		function bindFramebuffer(target, framebuffer) {
			if (framebuffer === null && xrFramebuffer !== null) framebuffer = xrFramebuffer; // use active XR framebuffer if available

			if (currentBoundFramebuffers[target] !== framebuffer) {
				gl.bindFramebuffer(target, framebuffer);
				currentBoundFramebuffers[target] = framebuffer;

				if (isWebGL2) {
					// gl.DRAW_FRAMEBUFFER is equivalent to gl.FRAMEBUFFER
					if (target === gl.DRAW_FRAMEBUFFER) {
						currentBoundFramebuffers[gl.FRAMEBUFFER] = framebuffer;
					}

					if (target === gl.FRAMEBUFFER) {
						currentBoundFramebuffers[gl.DRAW_FRAMEBUFFER] = framebuffer;
					}
				}

				return true;
			}

			return false;
		}

		function useProgram(program) {
			if (currentProgram !== program) {
				gl.useProgram(program);
				currentProgram = program;
				return true;
			}

			return false;
		}

		const equationToGL = {
			[AddEquation]: gl.FUNC_ADD,
			[SubtractEquation]: gl.FUNC_SUBTRACT,
			[ReverseSubtractEquation]: gl.FUNC_REVERSE_SUBTRACT
		};

		if (isWebGL2) {
			equationToGL[MinEquation] = gl.MIN;
			equationToGL[MaxEquation] = gl.MAX;
		} else {
			const extension = extensions.get('EXT_blend_minmax');

			if (extension !== null) {
				equationToGL[MinEquation] = extension.MIN_EXT;
				equationToGL[MaxEquation] = extension.MAX_EXT;
			}
		}

		const factorToGL = {
			[ZeroFactor]: gl.ZERO,
			[OneFactor]: gl.ONE,
			[SrcColorFactor]: gl.SRC_COLOR,
			[SrcAlphaFactor]: gl.SRC_ALPHA,
			[SrcAlphaSaturateFactor]: gl.SRC_ALPHA_SATURATE,
			[DstColorFactor]: gl.DST_COLOR,
			[DstAlphaFactor]: gl.DST_ALPHA,
			[OneMinusSrcColorFactor]: gl.ONE_MINUS_SRC_COLOR,
			[OneMinusSrcAlphaFactor]: gl.ONE_MINUS_SRC_ALPHA,
			[OneMinusDstColorFactor]: gl.ONE_MINUS_DST_COLOR,
			[OneMinusDstAlphaFactor]: gl.ONE_MINUS_DST_ALPHA
		};

		function setBlending(blending, blendEquation, blendSrc, blendDst, blendEquationAlpha, blendSrcAlpha, blendDstAlpha, premultipliedAlpha) {
			if (blending === NoBlending) {
				if (currentBlendingEnabled === true) {
					disable(gl.BLEND);
					currentBlendingEnabled = false;
				}

				return;
			}

			if (currentBlendingEnabled === false) {
				enable(gl.BLEND);
				currentBlendingEnabled = true;
			}

			if (blending !== CustomBlending) {
				if (blending !== currentBlending || premultipliedAlpha !== currentPremultipledAlpha) {
					if (currentBlendEquation !== AddEquation || currentBlendEquationAlpha !== AddEquation) {
						gl.blendEquation(gl.FUNC_ADD);
						currentBlendEquation = AddEquation;
						currentBlendEquationAlpha = AddEquation;
					}

					if (premultipliedAlpha) {
						switch (blending) {
							case NormalBlending:
								gl.blendFuncSeparate(gl.ONE, gl.ONE_MINUS_SRC_ALPHA, gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
								break;

							case AdditiveBlending:
								gl.blendFunc(gl.ONE, gl.ONE);
								break;

							case SubtractiveBlending:
								gl.blendFuncSeparate(gl.ZERO, gl.ZERO, gl.ONE_MINUS_SRC_COLOR, gl.ONE_MINUS_SRC_ALPHA);
								break;

							case MultiplyBlending:
								gl.blendFuncSeparate(gl.ZERO, gl.SRC_COLOR, gl.ZERO, gl.SRC_ALPHA);
								break;

							default:
								console.error('THREE.WebGLState: Invalid blending: ', blending);
								break;
						}
					} else {
						switch (blending) {
							case NormalBlending:
								gl.blendFuncSeparate(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA, gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
								break;

							case AdditiveBlending:
								gl.blendFunc(gl.SRC_ALPHA, gl.ONE);
								break;

							case SubtractiveBlending:
								gl.blendFunc(gl.ZERO, gl.ONE_MINUS_SRC_COLOR);
								break;

							case MultiplyBlending:
								gl.blendFunc(gl.ZERO, gl.SRC_COLOR);
								break;

							default:
								console.error('THREE.WebGLState: Invalid blending: ', blending);
								break;
						}
					}

					currentBlendSrc = null;
					currentBlendDst = null;
					currentBlendSrcAlpha = null;
					currentBlendDstAlpha = null;
					currentBlending = blending;
					currentPremultipledAlpha = premultipliedAlpha;
				}

				return;
			} // custom blending


			blendEquationAlpha = blendEquationAlpha || blendEquation;
			blendSrcAlpha = blendSrcAlpha || blendSrc;
			blendDstAlpha = blendDstAlpha || blendDst;

			if (blendEquation !== currentBlendEquation || blendEquationAlpha !== currentBlendEquationAlpha) {
				gl.blendEquationSeparate(equationToGL[blendEquation], equationToGL[blendEquationAlpha]);
				currentBlendEquation = blendEquation;
				currentBlendEquationAlpha = blendEquationAlpha;
			}

			if (blendSrc !== currentBlendSrc || blendDst !== currentBlendDst || blendSrcAlpha !== currentBlendSrcAlpha || blendDstAlpha !== currentBlendDstAlpha) {
				gl.blendFuncSeparate(factorToGL[blendSrc], factorToGL[blendDst], factorToGL[blendSrcAlpha], factorToGL[blendDstAlpha]);
				currentBlendSrc = blendSrc;
				currentBlendDst = blendDst;
				currentBlendSrcAlpha = blendSrcAlpha;
				currentBlendDstAlpha = blendDstAlpha;
			}

			currentBlending = blending;
			currentPremultipledAlpha = null;
		}

		function setMaterial(material, frontFaceCW) {
			material.side === DoubleSide ? disable(gl.CULL_FACE) : enable(gl.CULL_FACE);
			let flipSided = material.side === BackSide;
			if (frontFaceCW) flipSided = !flipSided;
			setFlipSided(flipSided);
			material.blending === NormalBlending && material.transparent === false ? setBlending(NoBlending) : setBlending(material.blending, material.blendEquation, material.blendSrc, material.blendDst, material.blendEquationAlpha, material.blendSrcAlpha, material.blendDstAlpha, material.premultipliedAlpha);
			depthBuffer.setFunc(material.depthFunc);
			depthBuffer.setTest(material.depthTest);
			depthBuffer.setMask(material.depthWrite);
			colorBuffer.setMask(material.colorWrite);
			const stencilWrite = material.stencilWrite;
			stencilBuffer.setTest(stencilWrite);

			if (stencilWrite) {
				stencilBuffer.setMask(material.stencilWriteMask);
				stencilBuffer.setFunc(material.stencilFunc, material.stencilRef, material.stencilFuncMask);
				stencilBuffer.setOp(material.stencilFail, material.stencilZFail, material.stencilZPass);
			}

			setPolygonOffset(material.polygonOffset, material.polygonOffsetFactor, material.polygonOffsetUnits);
			material.alphaToCoverage === true ? enable(gl.SAMPLE_ALPHA_TO_COVERAGE) : disable(gl.SAMPLE_ALPHA_TO_COVERAGE);
		} //


		function setFlipSided(flipSided) {
			if (currentFlipSided !== flipSided) {
				if (flipSided) {
					gl.frontFace(gl.CW);
				} else {
					gl.frontFace(gl.CCW);
				}

				currentFlipSided = flipSided;
			}
		}

		function setCullFace(cullFace) {
			if (cullFace !== CullFaceNone) {
				enable(gl.CULL_FACE);

				if (cullFace !== currentCullFace) {
					if (cullFace === CullFaceBack) {
						gl.cullFace(gl.BACK);
					} else if (cullFace === CullFaceFront) {
						gl.cullFace(gl.FRONT);
					} else {
						gl.cullFace(gl.FRONT_AND_BACK);
					}
				}
			} else {
				disable(gl.CULL_FACE);
			}

			currentCullFace = cullFace;
		}

		function setLineWidth(width) {
			if (width !== currentLineWidth) {
				if (lineWidthAvailable) gl.lineWidth(width);
				currentLineWidth = width;
			}
		}

		function setPolygonOffset(polygonOffset, factor, units) {
			if (polygonOffset) {
				enable(gl.POLYGON_OFFSET_FILL);

				if (currentPolygonOffsetFactor !== factor || currentPolygonOffsetUnits !== units) {
					gl.polygonOffset(factor, units);
					currentPolygonOffsetFactor = factor;
					currentPolygonOffsetUnits = units;
				}
			} else {
				disable(gl.POLYGON_OFFSET_FILL);
			}
		}

		function setScissorTest(scissorTest) {
			if (scissorTest) {
				enable(gl.SCISSOR_TEST);
			} else {
				disable(gl.SCISSOR_TEST);
			}
		} // texture


		function activeTexture(webglSlot) {
			if (webglSlot === undefined) webglSlot = gl.TEXTURE0 + maxTextures - 1;

			if (currentTextureSlot !== webglSlot) {
				gl.activeTexture(webglSlot);
				currentTextureSlot = webglSlot;
			}
		}

		function bindTexture(webglType, webglTexture) {
			if (currentTextureSlot === null) {
				activeTexture();
			}

			let boundTexture = currentBoundTextures[currentTextureSlot];

			if (boundTexture === undefined) {
				boundTexture = {
					type: undefined,
					texture: undefined
				};
				currentBoundTextures[currentTextureSlot] = boundTexture;
			}

			if (boundTexture.type !== webglType || boundTexture.texture !== webglTexture) {
				gl.bindTexture(webglType, webglTexture || emptyTextures[webglType]);
				boundTexture.type = webglType;
				boundTexture.texture = webglTexture;
			}
		}

		function unbindTexture() {
			const boundTexture = currentBoundTextures[currentTextureSlot];

			if (boundTexture !== undefined && boundTexture.type !== undefined) {
				gl.bindTexture(boundTexture.type, null);
				boundTexture.type = undefined;
				boundTexture.texture = undefined;
			}
		}

		function compressedTexImage2D() {
			try {
				gl.compressedTexImage2D.apply(gl, arguments);
			} catch (error) {
				console.error('THREE.WebGLState:', error);
			}
		}

		function texImage2D() {
			try {
				gl.texImage2D.apply(gl, arguments);
			} catch (error) {
				console.error('THREE.WebGLState:', error);
			}
		}

		function texImage3D() {
			try {
				gl.texImage3D.apply(gl, arguments);
			} catch (error) {
				console.error('THREE.WebGLState:', error);
			}
		} //


		function scissor(scissor) {
			if (currentScissor.equals(scissor) === false) {
				gl.scissor(scissor.x, scissor.y, scissor.z, scissor.w);
				currentScissor.copy(scissor);
			}
		}

		function viewport(viewport) {
			if (currentViewport.equals(viewport) === false) {
				gl.viewport(viewport.x, viewport.y, viewport.z, viewport.w);
				currentViewport.copy(viewport);
			}
		} //


		function reset() {
			// reset state
			gl.disable(gl.BLEND);
			gl.disable(gl.CULL_FACE);
			gl.disable(gl.DEPTH_TEST);
			gl.disable(gl.POLYGON_OFFSET_FILL);
			gl.disable(gl.SCISSOR_TEST);
			gl.disable(gl.STENCIL_TEST);
			gl.disable(gl.SAMPLE_ALPHA_TO_COVERAGE);
			gl.blendEquation(gl.FUNC_ADD);
			gl.blendFunc(gl.ONE, gl.ZERO);
			gl.blendFuncSeparate(gl.ONE, gl.ZERO, gl.ONE, gl.ZERO);
			gl.colorMask(true, true, true, true);
			gl.clearColor(0, 0, 0, 0);
			gl.depthMask(true);
			gl.depthFunc(gl.LESS);
			gl.clearDepth(1);
			gl.stencilMask(0xffffffff);
			gl.stencilFunc(gl.ALWAYS, 0, 0xffffffff);
			gl.stencilOp(gl.KEEP, gl.KEEP, gl.KEEP);
			gl.clearStencil(0);
			gl.cullFace(gl.BACK);
			gl.frontFace(gl.CCW);
			gl.polygonOffset(0, 0);
			gl.activeTexture(gl.TEXTURE0);
			gl.bindFramebuffer(gl.FRAMEBUFFER, null);

			if (isWebGL2 === true) {
				gl.bindFramebuffer(gl.DRAW_FRAMEBUFFER, null);
				gl.bindFramebuffer(gl.READ_FRAMEBUFFER, null);
			}

			gl.useProgram(null);
			gl.lineWidth(1);
			gl.scissor(0, 0, gl.canvas.width, gl.canvas.height);
			gl.viewport(0, 0, gl.canvas.width, gl.canvas.height); // reset internals

			enabledCapabilities = {};
			currentTextureSlot = null;
			currentBoundTextures = {};
			xrFramebuffer = null;
			currentBoundFramebuffers = {};
			currentProgram = null;
			currentBlendingEnabled = false;
			currentBlending = null;
			currentBlendEquation = null;
			currentBlendSrc = null;
			currentBlendDst = null;
			currentBlendEquationAlpha = null;
			currentBlendSrcAlpha = null;
			currentBlendDstAlpha = null;
			currentPremultipledAlpha = false;
			currentFlipSided = null;
			currentCullFace = null;
			currentLineWidth = null;
			currentPolygonOffsetFactor = null;
			currentPolygonOffsetUnits = null;
			currentScissor.set(0, 0, gl.canvas.width, gl.canvas.height);
			currentViewport.set(0, 0, gl.canvas.width, gl.canvas.height);
			colorBuffer.reset();
			depthBuffer.reset();
			stencilBuffer.reset();
		}

		return {
			buffers: {
				color: colorBuffer,
				depth: depthBuffer,
				stencil: stencilBuffer
			},
			enable: enable,
			disable: disable,
			bindFramebuffer: bindFramebuffer,
			bindXRFramebuffer: bindXRFramebuffer,
			useProgram: useProgram,
			setBlending: setBlending,
			setMaterial: setMaterial,
			setFlipSided: setFlipSided,
			setCullFace: setCullFace,
			setLineWidth: setLineWidth,
			setPolygonOffset: setPolygonOffset,
			setScissorTest: setScissorTest,
			activeTexture: activeTexture,
			bindTexture: bindTexture,
			unbindTexture: unbindTexture,
			compressedTexImage2D: compressedTexImage2D,
			texImage2D: texImage2D,
			texImage3D: texImage3D,
			scissor: scissor,
			viewport: viewport,
			reset: reset
		};
	}

	function WebGLTextures(_gl, extensions, state, properties, capabilities, utils, info) {
		const isWebGL2 = capabilities.isWebGL2;
		const maxTextures = capabilities.maxTextures;
		const maxCubemapSize = capabilities.maxCubemapSize;
		const maxTextureSize = capabilities.maxTextureSize;
		const maxSamples = capabilities.maxSamples;

		const _videoTextures = new WeakMap();

		let _canvas; // cordova iOS (as of 5.0) still uses UIWebView, which provides OffscreenCanvas,
		// also OffscreenCanvas.getContext("webgl"), but not OffscreenCanvas.getContext("2d")!
		// Some implementations may only implement OffscreenCanvas partially (e.g. lacking 2d).


		let useOffscreenCanvas = false;

		try {
			useOffscreenCanvas = typeof OffscreenCanvas !== 'undefined' && new OffscreenCanvas(1, 1).getContext('2d') !== null;
		} catch (err) {// Ignore any errors
		}

		function createCanvas(width, height) {
			// Use OffscreenCanvas when available. Specially needed in web workers
			return useOffscreenCanvas ? new OffscreenCanvas(width, height) : createElementNS('canvas');
		}

		function resizeImage(image, needsPowerOfTwo, needsNewCanvas, maxSize) {
			let scale = 1; // handle case if texture exceeds max size

			if (image.width > maxSize || image.height > maxSize) {
				scale = maxSize / Math.max(image.width, image.height);
			} // only perform resize if necessary


			if (scale < 1 || needsPowerOfTwo === true) {
				// only perform resize for certain image types
				if (typeof HTMLImageElement !== 'undefined' && image instanceof HTMLImageElement || typeof HTMLCanvasElement !== 'undefined' && image instanceof HTMLCanvasElement || typeof ImageBitmap !== 'undefined' && image instanceof ImageBitmap) {
					const floor = needsPowerOfTwo ? floorPowerOfTwo : Math.floor;
					const width = floor(scale * image.width);
					const height = floor(scale * image.height);
					if (_canvas === undefined) _canvas = createCanvas(width, height); // cube textures can't reuse the same canvas

					const canvas = needsNewCanvas ? createCanvas(width, height) : _canvas;
					canvas.width = width;
					canvas.height = height;
					const context = canvas.getContext('2d');
					context.drawImage(image, 0, 0, width, height);
					console.warn('THREE.WebGLRenderer: Texture has been resized from (' + image.width + 'x' + image.height + ') to (' + width + 'x' + height + ').');
					return canvas;
				} else {
					if ('data' in image) {
						console.warn('THREE.WebGLRenderer: Image in DataTexture is too big (' + image.width + 'x' + image.height + ').');
					}

					return image;
				}
			}

			return image;
		}

		function isPowerOfTwo$1(image) {
			return isPowerOfTwo(image.width) && isPowerOfTwo(image.height);
		}

		function textureNeedsPowerOfTwo(texture) {
			if (isWebGL2) return false;
			return texture.wrapS !== ClampToEdgeWrapping || texture.wrapT !== ClampToEdgeWrapping || texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter;
		}

		function textureNeedsGenerateMipmaps(texture, supportsMips) {
			return texture.generateMipmaps && supportsMips && texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter;
		}

		function generateMipmap(target, texture, width, height, depth = 1) {
			_gl.generateMipmap(target);

			const textureProperties = properties.get(texture);
			textureProperties.__maxMipLevel = Math.log2(Math.max(width, height, depth));
		}

		function getInternalFormat(internalFormatName, glFormat, glType, encoding) {
			if (isWebGL2 === false) return glFormat;

			if (internalFormatName !== null) {
				if (_gl[internalFormatName] !== undefined) return _gl[internalFormatName];
				console.warn('THREE.WebGLRenderer: Attempt to use non-existing WebGL internal format \'' + internalFormatName + '\'');
			}

			let internalFormat = glFormat;

			if (glFormat === _gl.RED) {
				if (glType === _gl.FLOAT) internalFormat = _gl.R32F;
				if (glType === _gl.HALF_FLOAT) internalFormat = _gl.R16F;
				if (glType === _gl.UNSIGNED_BYTE) internalFormat = _gl.R8;
			}

			if (glFormat === _gl.RGB) {
				if (glType === _gl.FLOAT) internalFormat = _gl.RGB32F;
				if (glType === _gl.HALF_FLOAT) internalFormat = _gl.RGB16F;
				if (glType === _gl.UNSIGNED_BYTE) internalFormat = _gl.RGB8;
			}

			if (glFormat === _gl.RGBA) {
				if (glType === _gl.FLOAT) internalFormat = _gl.RGBA32F;
				if (glType === _gl.HALF_FLOAT) internalFormat = _gl.RGBA16F;
				if (glType === _gl.UNSIGNED_BYTE) internalFormat = encoding === sRGBEncoding ? _gl.SRGB8_ALPHA8 : _gl.RGBA8;
			}

			if (internalFormat === _gl.R16F || internalFormat === _gl.R32F || internalFormat === _gl.RGBA16F || internalFormat === _gl.RGBA32F) {
				extensions.get('EXT_color_buffer_float');
			}

			return internalFormat;
		} // Fallback filters for non-power-of-2 textures


		function filterFallback(f) {
			if (f === NearestFilter || f === NearestMipmapNearestFilter || f === NearestMipmapLinearFilter) {
				return _gl.NEAREST;
			}

			return _gl.LINEAR;
		} //


		function onTextureDispose(event) {
			const texture = event.target;
			texture.removeEventListener('dispose', onTextureDispose);
			deallocateTexture(texture);

			if (texture.isVideoTexture) {
				_videoTextures.delete(texture);
			}

			info.memory.textures--;
		}

		function onRenderTargetDispose(event) {
			const renderTarget = event.target;
			renderTarget.removeEventListener('dispose', onRenderTargetDispose);
			deallocateRenderTarget(renderTarget);
		} //


		function deallocateTexture(texture) {
			const textureProperties = properties.get(texture);
			if (textureProperties.__webglInit === undefined) return;

			_gl.deleteTexture(textureProperties.__webglTexture);

			properties.remove(texture);
		}

		function deallocateRenderTarget(renderTarget) {
			const texture = renderTarget.texture;
			const renderTargetProperties = properties.get(renderTarget);
			const textureProperties = properties.get(texture);
			if (!renderTarget) return;

			if (textureProperties.__webglTexture !== undefined) {
				_gl.deleteTexture(textureProperties.__webglTexture);

				info.memory.textures--;
			}

			if (renderTarget.depthTexture) {
				renderTarget.depthTexture.dispose();
			}

			if (renderTarget.isWebGLCubeRenderTarget) {
				for (let i = 0; i < 6; i++) {
					_gl.deleteFramebuffer(renderTargetProperties.__webglFramebuffer[i]);

					if (renderTargetProperties.__webglDepthbuffer) _gl.deleteRenderbuffer(renderTargetProperties.__webglDepthbuffer[i]);
				}
			} else {
				_gl.deleteFramebuffer(renderTargetProperties.__webglFramebuffer);

				if (renderTargetProperties.__webglDepthbuffer) _gl.deleteRenderbuffer(renderTargetProperties.__webglDepthbuffer);
				if (renderTargetProperties.__webglMultisampledFramebuffer) _gl.deleteFramebuffer(renderTargetProperties.__webglMultisampledFramebuffer);
				if (renderTargetProperties.__webglColorRenderbuffer) _gl.deleteRenderbuffer(renderTargetProperties.__webglColorRenderbuffer);
				if (renderTargetProperties.__webglDepthRenderbuffer) _gl.deleteRenderbuffer(renderTargetProperties.__webglDepthRenderbuffer);
			}

			if (renderTarget.isWebGLMultipleRenderTargets) {
				for (let i = 0, il = texture.length; i < il; i++) {
					const attachmentProperties = properties.get(texture[i]);

					if (attachmentProperties.__webglTexture) {
						_gl.deleteTexture(attachmentProperties.__webglTexture);

						info.memory.textures--;
					}

					properties.remove(texture[i]);
				}
			}

			properties.remove(texture);
			properties.remove(renderTarget);
		} //


		let textureUnits = 0;

		function resetTextureUnits() {
			textureUnits = 0;
		}

		function allocateTextureUnit() {
			const textureUnit = textureUnits;

			if (textureUnit >= maxTextures) {
				console.warn('THREE.WebGLTextures: Trying to use ' + textureUnit + ' texture units while this GPU supports only ' + maxTextures);
			}

			textureUnits += 1;
			return textureUnit;
		} //


		function setTexture2D(texture, slot) {
			const textureProperties = properties.get(texture);
			if (texture.isVideoTexture) updateVideoTexture(texture);

			if (texture.version > 0 && textureProperties.__version !== texture.version) {
				const image = texture.image;

				if (image === undefined) {
					console.warn('THREE.WebGLRenderer: Texture marked for update but image is undefined');
				} else if (image.complete === false) {
					console.warn('THREE.WebGLRenderer: Texture marked for update but image is incomplete');
				} else {
					uploadTexture(textureProperties, texture, slot);
					return;
				}
			}

			state.activeTexture(_gl.TEXTURE0 + slot);
			state.bindTexture(_gl.TEXTURE_2D, textureProperties.__webglTexture);
		}

		function setTexture2DArray(texture, slot) {
			const textureProperties = properties.get(texture);

			if (texture.version > 0 && textureProperties.__version !== texture.version) {
				uploadTexture(textureProperties, texture, slot);
				return;
			}

			state.activeTexture(_gl.TEXTURE0 + slot);
			state.bindTexture(_gl.TEXTURE_2D_ARRAY, textureProperties.__webglTexture);
		}

		function setTexture3D(texture, slot) {
			const textureProperties = properties.get(texture);

			if (texture.version > 0 && textureProperties.__version !== texture.version) {
				uploadTexture(textureProperties, texture, slot);
				return;
			}

			state.activeTexture(_gl.TEXTURE0 + slot);
			state.bindTexture(_gl.TEXTURE_3D, textureProperties.__webglTexture);
		}

		function setTextureCube(texture, slot) {
			const textureProperties = properties.get(texture);

			if (texture.version > 0 && textureProperties.__version !== texture.version) {
				uploadCubeTexture(textureProperties, texture, slot);
				return;
			}

			state.activeTexture(_gl.TEXTURE0 + slot);
			state.bindTexture(_gl.TEXTURE_CUBE_MAP, textureProperties.__webglTexture);
		}

		const wrappingToGL = {
			[RepeatWrapping]: _gl.REPEAT,
			[ClampToEdgeWrapping]: _gl.CLAMP_TO_EDGE,
			[MirroredRepeatWrapping]: _gl.MIRRORED_REPEAT
		};
		const filterToGL = {
			[NearestFilter]: _gl.NEAREST,
			[NearestMipmapNearestFilter]: _gl.NEAREST_MIPMAP_NEAREST,
			[NearestMipmapLinearFilter]: _gl.NEAREST_MIPMAP_LINEAR,
			[LinearFilter]: _gl.LINEAR,
			[LinearMipmapNearestFilter]: _gl.LINEAR_MIPMAP_NEAREST,
			[LinearMipmapLinearFilter]: _gl.LINEAR_MIPMAP_LINEAR
		};

		function setTextureParameters(textureType, texture, supportsMips) {
			if (supportsMips) {
				_gl.texParameteri(textureType, _gl.TEXTURE_WRAP_S, wrappingToGL[texture.wrapS]);

				_gl.texParameteri(textureType, _gl.TEXTURE_WRAP_T, wrappingToGL[texture.wrapT]);

				if (textureType === _gl.TEXTURE_3D || textureType === _gl.TEXTURE_2D_ARRAY) {
					_gl.texParameteri(textureType, _gl.TEXTURE_WRAP_R, wrappingToGL[texture.wrapR]);
				}

				_gl.texParameteri(textureType, _gl.TEXTURE_MAG_FILTER, filterToGL[texture.magFilter]);

				_gl.texParameteri(textureType, _gl.TEXTURE_MIN_FILTER, filterToGL[texture.minFilter]);
			} else {
				_gl.texParameteri(textureType, _gl.TEXTURE_WRAP_S, _gl.CLAMP_TO_EDGE);

				_gl.texParameteri(textureType, _gl.TEXTURE_WRAP_T, _gl.CLAMP_TO_EDGE);

				if (textureType === _gl.TEXTURE_3D || textureType === _gl.TEXTURE_2D_ARRAY) {
					_gl.texParameteri(textureType, _gl.TEXTURE_WRAP_R, _gl.CLAMP_TO_EDGE);
				}

				if (texture.wrapS !== ClampToEdgeWrapping || texture.wrapT !== ClampToEdgeWrapping) {
					console.warn('THREE.WebGLRenderer: Texture is not power of two. Texture.wrapS and Texture.wrapT should be set to THREE.ClampToEdgeWrapping.');
				}

				_gl.texParameteri(textureType, _gl.TEXTURE_MAG_FILTER, filterFallback(texture.magFilter));

				_gl.texParameteri(textureType, _gl.TEXTURE_MIN_FILTER, filterFallback(texture.minFilter));

				if (texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter) {
					console.warn('THREE.WebGLRenderer: Texture is not power of two. Texture.minFilter should be set to THREE.NearestFilter or THREE.LinearFilter.');
				}
			}

			if (extensions.has('EXT_texture_filter_anisotropic') === true) {
				const extension = extensions.get('EXT_texture_filter_anisotropic');
				if (texture.type === FloatType && extensions.has('OES_texture_float_linear') === false) return; // verify extension for WebGL 1 and WebGL 2

				if (isWebGL2 === false && texture.type === HalfFloatType && extensions.has('OES_texture_half_float_linear') === false) return; // verify extension for WebGL 1 only

				if (texture.anisotropy > 1 || properties.get(texture).__currentAnisotropy) {
					_gl.texParameterf(textureType, extension.TEXTURE_MAX_ANISOTROPY_EXT, Math.min(texture.anisotropy, capabilities.getMaxAnisotropy()));

					properties.get(texture).__currentAnisotropy = texture.anisotropy;
				}
			}
		}

		function initTexture(textureProperties, texture) {
			if (textureProperties.__webglInit === undefined) {
				textureProperties.__webglInit = true;
				texture.addEventListener('dispose', onTextureDispose);
				textureProperties.__webglTexture = _gl.createTexture();
				info.memory.textures++;
			}
		}

		function uploadTexture(textureProperties, texture, slot) {
			let textureType = _gl.TEXTURE_2D;
			if (texture.isDataTexture2DArray) textureType = _gl.TEXTURE_2D_ARRAY;
			if (texture.isDataTexture3D) textureType = _gl.TEXTURE_3D;
			initTexture(textureProperties, texture);
			state.activeTexture(_gl.TEXTURE0 + slot);
			state.bindTexture(textureType, textureProperties.__webglTexture);

			_gl.pixelStorei(_gl.UNPACK_FLIP_Y_WEBGL, texture.flipY);

			_gl.pixelStorei(_gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, texture.premultiplyAlpha);

			_gl.pixelStorei(_gl.UNPACK_ALIGNMENT, texture.unpackAlignment);

			_gl.pixelStorei(_gl.UNPACK_COLORSPACE_CONVERSION_WEBGL, _gl.NONE);

			const needsPowerOfTwo = textureNeedsPowerOfTwo(texture) && isPowerOfTwo$1(texture.image) === false;
			const image = resizeImage(texture.image, needsPowerOfTwo, false, maxTextureSize);
			const supportsMips = isPowerOfTwo$1(image) || isWebGL2,
						glFormat = utils.convert(texture.format);
			let glType = utils.convert(texture.type),
					glInternalFormat = getInternalFormat(texture.internalFormat, glFormat, glType, texture.encoding);
			setTextureParameters(textureType, texture, supportsMips);
			let mipmap;
			const mipmaps = texture.mipmaps;

			if (texture.isDepthTexture) {
				// populate depth texture with dummy data
				glInternalFormat = _gl.DEPTH_COMPONENT;

				if (isWebGL2) {
					if (texture.type === FloatType) {
						glInternalFormat = _gl.DEPTH_COMPONENT32F;
					} else if (texture.type === UnsignedIntType) {
						glInternalFormat = _gl.DEPTH_COMPONENT24;
					} else if (texture.type === UnsignedInt248Type) {
						glInternalFormat = _gl.DEPTH24_STENCIL8;
					} else {
						glInternalFormat = _gl.DEPTH_COMPONENT16; // WebGL2 requires sized internalformat for glTexImage2D
					}
				} else {
					if (texture.type === FloatType) {
						console.error('WebGLRenderer: Floating point depth texture requires WebGL2.');
					}
				} // validation checks for WebGL 1


				if (texture.format === DepthFormat && glInternalFormat === _gl.DEPTH_COMPONENT) {
					// The error INVALID_OPERATION is generated by texImage2D if format and internalformat are
					// DEPTH_COMPONENT and type is not UNSIGNED_SHORT or UNSIGNED_INT
					// (https://www.khronos.org/registry/webgl/extensions/WEBGL_depth_texture/)
					if (texture.type !== UnsignedShortType && texture.type !== UnsignedIntType) {
						console.warn('THREE.WebGLRenderer: Use UnsignedShortType or UnsignedIntType for DepthFormat DepthTexture.');
						texture.type = UnsignedShortType;
						glType = utils.convert(texture.type);
					}
				}

				if (texture.format === DepthStencilFormat && glInternalFormat === _gl.DEPTH_COMPONENT) {
					// Depth stencil textures need the DEPTH_STENCIL internal format
					// (https://www.khronos.org/registry/webgl/extensions/WEBGL_depth_texture/)
					glInternalFormat = _gl.DEPTH_STENCIL; // The error INVALID_OPERATION is generated by texImage2D if format and internalformat are
					// DEPTH_STENCIL and type is not UNSIGNED_INT_24_8_WEBGL.
					// (https://www.khronos.org/registry/webgl/extensions/WEBGL_depth_texture/)

					if (texture.type !== UnsignedInt248Type) {
						console.warn('THREE.WebGLRenderer: Use UnsignedInt248Type for DepthStencilFormat DepthTexture.');
						texture.type = UnsignedInt248Type;
						glType = utils.convert(texture.type);
					}
				} //


				state.texImage2D(_gl.TEXTURE_2D, 0, glInternalFormat, image.width, image.height, 0, glFormat, glType, null);
			} else if (texture.isDataTexture) {
				// use manually created mipmaps if available
				// if there are no manual mipmaps
				// set 0 level mipmap and then use GL to generate other mipmap levels
				if (mipmaps.length > 0 && supportsMips) {
					for (let i = 0, il = mipmaps.length; i < il; i++) {
						mipmap = mipmaps[i];
						state.texImage2D(_gl.TEXTURE_2D, i, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data);
					}

					texture.generateMipmaps = false;
					textureProperties.__maxMipLevel = mipmaps.length - 1;
				} else {
					state.texImage2D(_gl.TEXTURE_2D, 0, glInternalFormat, image.width, image.height, 0, glFormat, glType, image.data);
					textureProperties.__maxMipLevel = 0;
				}
			} else if (texture.isCompressedTexture) {
				for (let i = 0, il = mipmaps.length; i < il; i++) {
					mipmap = mipmaps[i];

					if (texture.format !== RGBAFormat && texture.format !== RGBFormat) {
						if (glFormat !== null) {
							state.compressedTexImage2D(_gl.TEXTURE_2D, i, glInternalFormat, mipmap.width, mipmap.height, 0, mipmap.data);
						} else {
							console.warn('THREE.WebGLRenderer: Attempt to load unsupported compressed texture format in .uploadTexture()');
						}
					} else {
						state.texImage2D(_gl.TEXTURE_2D, i, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data);
					}
				}

				textureProperties.__maxMipLevel = mipmaps.length - 1;
			} else if (texture.isDataTexture2DArray) {
				state.texImage3D(_gl.TEXTURE_2D_ARRAY, 0, glInternalFormat, image.width, image.height, image.depth, 0, glFormat, glType, image.data);
				textureProperties.__maxMipLevel = 0;
			} else if (texture.isDataTexture3D) {
				state.texImage3D(_gl.TEXTURE_3D, 0, glInternalFormat, image.width, image.height, image.depth, 0, glFormat, glType, image.data);
				textureProperties.__maxMipLevel = 0;
			} else {
				// regular Texture (image, video, canvas)
				// use manually created mipmaps if available
				// if there are no manual mipmaps
				// set 0 level mipmap and then use GL to generate other mipmap levels
				if (mipmaps.length > 0 && supportsMips) {
					for (let i = 0, il = mipmaps.length; i < il; i++) {
						mipmap = mipmaps[i];
						state.texImage2D(_gl.TEXTURE_2D, i, glInternalFormat, glFormat, glType, mipmap);
					}

					texture.generateMipmaps = false;
					textureProperties.__maxMipLevel = mipmaps.length - 1;
				} else {
					state.texImage2D(_gl.TEXTURE_2D, 0, glInternalFormat, glFormat, glType, image);
					textureProperties.__maxMipLevel = 0;
				}
			}

			if (textureNeedsGenerateMipmaps(texture, supportsMips)) {
				generateMipmap(textureType, texture, image.width, image.height);
			}

			textureProperties.__version = texture.version;
			if (texture.onUpdate) texture.onUpdate(texture);
		}

		function uploadCubeTexture(textureProperties, texture, slot) {
			if (texture.image.length !== 6) return;
			initTexture(textureProperties, texture);
			state.activeTexture(_gl.TEXTURE0 + slot);
			state.bindTexture(_gl.TEXTURE_CUBE_MAP, textureProperties.__webglTexture);

			_gl.pixelStorei(_gl.UNPACK_FLIP_Y_WEBGL, texture.flipY);

			_gl.pixelStorei(_gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, texture.premultiplyAlpha);

			_gl.pixelStorei(_gl.UNPACK_ALIGNMENT, texture.unpackAlignment);

			_gl.pixelStorei(_gl.UNPACK_COLORSPACE_CONVERSION_WEBGL, _gl.NONE);

			const isCompressed = texture && (texture.isCompressedTexture || texture.image[0].isCompressedTexture);
			const isDataTexture = texture.image[0] && texture.image[0].isDataTexture;
			const cubeImage = [];

			for (let i = 0; i < 6; i++) {
				if (!isCompressed && !isDataTexture) {
					cubeImage[i] = resizeImage(texture.image[i], false, true, maxCubemapSize);
				} else {
					cubeImage[i] = isDataTexture ? texture.image[i].image : texture.image[i];
				}
			}

			const image = cubeImage[0],
						supportsMips = isPowerOfTwo$1(image) || isWebGL2,
						glFormat = utils.convert(texture.format),
						glType = utils.convert(texture.type),
						glInternalFormat = getInternalFormat(texture.internalFormat, glFormat, glType, texture.encoding);
			setTextureParameters(_gl.TEXTURE_CUBE_MAP, texture, supportsMips);
			let mipmaps;

			if (isCompressed) {
				for (let i = 0; i < 6; i++) {
					mipmaps = cubeImage[i].mipmaps;

					for (let j = 0; j < mipmaps.length; j++) {
						const mipmap = mipmaps[j];

						if (texture.format !== RGBAFormat && texture.format !== RGBFormat) {
							if (glFormat !== null) {
								state.compressedTexImage2D(_gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, j, glInternalFormat, mipmap.width, mipmap.height, 0, mipmap.data);
							} else {
								console.warn('THREE.WebGLRenderer: Attempt to load unsupported compressed texture format in .setTextureCube()');
							}
						} else {
							state.texImage2D(_gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, j, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data);
						}
					}
				}

				textureProperties.__maxMipLevel = mipmaps.length - 1;
			} else {
				mipmaps = texture.mipmaps;

				for (let i = 0; i < 6; i++) {
					if (isDataTexture) {
						state.texImage2D(_gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, glInternalFormat, cubeImage[i].width, cubeImage[i].height, 0, glFormat, glType, cubeImage[i].data);

						for (let j = 0; j < mipmaps.length; j++) {
							const mipmap = mipmaps[j];
							const mipmapImage = mipmap.image[i].image;
							state.texImage2D(_gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, j + 1, glInternalFormat, mipmapImage.width, mipmapImage.height, 0, glFormat, glType, mipmapImage.data);
						}
					} else {
						state.texImage2D(_gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, glInternalFormat, glFormat, glType, cubeImage[i]);

						for (let j = 0; j < mipmaps.length; j++) {
							const mipmap = mipmaps[j];
							state.texImage2D(_gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, j + 1, glInternalFormat, glFormat, glType, mipmap.image[i]);
						}
					}
				}

				textureProperties.__maxMipLevel = mipmaps.length;
			}

			if (textureNeedsGenerateMipmaps(texture, supportsMips)) {
				// We assume images for cube map have the same size.
				generateMipmap(_gl.TEXTURE_CUBE_MAP, texture, image.width, image.height);
			}

			textureProperties.__version = texture.version;
			if (texture.onUpdate) texture.onUpdate(texture);
		} // Render targets
		// Setup storage for target texture and bind it to correct framebuffer


		function setupFrameBufferTexture(framebuffer, renderTarget, texture, attachment, textureTarget) {
			const glFormat = utils.convert(texture.format);
			const glType = utils.convert(texture.type);
			const glInternalFormat = getInternalFormat(texture.internalFormat, glFormat, glType, texture.encoding);

			if (textureTarget === _gl.TEXTURE_3D || textureTarget === _gl.TEXTURE_2D_ARRAY) {
				state.texImage3D(textureTarget, 0, glInternalFormat, renderTarget.width, renderTarget.height, renderTarget.depth, 0, glFormat, glType, null);
			} else {
				state.texImage2D(textureTarget, 0, glInternalFormat, renderTarget.width, renderTarget.height, 0, glFormat, glType, null);
			}

			state.bindFramebuffer(_gl.FRAMEBUFFER, framebuffer);

			_gl.framebufferTexture2D(_gl.FRAMEBUFFER, attachment, textureTarget, properties.get(texture).__webglTexture, 0);

			state.bindFramebuffer(_gl.FRAMEBUFFER, null);
		} // Setup storage for internal depth/stencil buffers and bind to correct framebuffer


		function setupRenderBufferStorage(renderbuffer, renderTarget, isMultisample) {
			_gl.bindRenderbuffer(_gl.RENDERBUFFER, renderbuffer);

			if (renderTarget.depthBuffer && !renderTarget.stencilBuffer) {
				let glInternalFormat = _gl.DEPTH_COMPONENT16;

				if (isMultisample) {
					const depthTexture = renderTarget.depthTexture;

					if (depthTexture && depthTexture.isDepthTexture) {
						if (depthTexture.type === FloatType) {
							glInternalFormat = _gl.DEPTH_COMPONENT32F;
						} else if (depthTexture.type === UnsignedIntType) {
							glInternalFormat = _gl.DEPTH_COMPONENT24;
						}
					}

					const samples = getRenderTargetSamples(renderTarget);

					_gl.renderbufferStorageMultisample(_gl.RENDERBUFFER, samples, glInternalFormat, renderTarget.width, renderTarget.height);
				} else {
					_gl.renderbufferStorage(_gl.RENDERBUFFER, glInternalFormat, renderTarget.width, renderTarget.height);
				}

				_gl.framebufferRenderbuffer(_gl.FRAMEBUFFER, _gl.DEPTH_ATTACHMENT, _gl.RENDERBUFFER, renderbuffer);
			} else if (renderTarget.depthBuffer && renderTarget.stencilBuffer) {
				if (isMultisample) {
					const samples = getRenderTargetSamples(renderTarget);

					_gl.renderbufferStorageMultisample(_gl.RENDERBUFFER, samples, _gl.DEPTH24_STENCIL8, renderTarget.width, renderTarget.height);
				} else {
					_gl.renderbufferStorage(_gl.RENDERBUFFER, _gl.DEPTH_STENCIL, renderTarget.width, renderTarget.height);
				}

				_gl.framebufferRenderbuffer(_gl.FRAMEBUFFER, _gl.DEPTH_STENCIL_ATTACHMENT, _gl.RENDERBUFFER, renderbuffer);
			} else {
				// Use the first texture for MRT so far
				const texture = renderTarget.isWebGLMultipleRenderTargets === true ? renderTarget.texture[0] : renderTarget.texture;
				const glFormat = utils.convert(texture.format);
				const glType = utils.convert(texture.type);
				const glInternalFormat = getInternalFormat(texture.internalFormat, glFormat, glType, texture.encoding);

				if (isMultisample) {
					const samples = getRenderTargetSamples(renderTarget);

					_gl.renderbufferStorageMultisample(_gl.RENDERBUFFER, samples, glInternalFormat, renderTarget.width, renderTarget.height);
				} else {
					_gl.renderbufferStorage(_gl.RENDERBUFFER, glInternalFormat, renderTarget.width, renderTarget.height);
				}
			}

			_gl.bindRenderbuffer(_gl.RENDERBUFFER, null);
		} // Setup resources for a Depth Texture for a FBO (needs an extension)


		function setupDepthTexture(framebuffer, renderTarget) {
			const isCube = renderTarget && renderTarget.isWebGLCubeRenderTarget;
			if (isCube) throw new Error('Depth Texture with cube render targets is not supported');
			state.bindFramebuffer(_gl.FRAMEBUFFER, framebuffer);

			if (!(renderTarget.depthTexture && renderTarget.depthTexture.isDepthTexture)) {
				throw new Error('renderTarget.depthTexture must be an instance of THREE.DepthTexture');
			} // upload an empty depth texture with framebuffer size


			if (!properties.get(renderTarget.depthTexture).__webglTexture || renderTarget.depthTexture.image.width !== renderTarget.width || renderTarget.depthTexture.image.height !== renderTarget.height) {
				renderTarget.depthTexture.image.width = renderTarget.width;
				renderTarget.depthTexture.image.height = renderTarget.height;
				renderTarget.depthTexture.needsUpdate = true;
			}

			setTexture2D(renderTarget.depthTexture, 0);

			const webglDepthTexture = properties.get(renderTarget.depthTexture).__webglTexture;

			if (renderTarget.depthTexture.format === DepthFormat) {
				_gl.framebufferTexture2D(_gl.FRAMEBUFFER, _gl.DEPTH_ATTACHMENT, _gl.TEXTURE_2D, webglDepthTexture, 0);
			} else if (renderTarget.depthTexture.format === DepthStencilFormat) {
				_gl.framebufferTexture2D(_gl.FRAMEBUFFER, _gl.DEPTH_STENCIL_ATTACHMENT, _gl.TEXTURE_2D, webglDepthTexture, 0);
			} else {
				throw new Error('Unknown depthTexture format');
			}
		} // Setup GL resources for a non-texture depth buffer


		function setupDepthRenderbuffer(renderTarget) {
			const renderTargetProperties = properties.get(renderTarget);
			const isCube = renderTarget.isWebGLCubeRenderTarget === true;

			if (renderTarget.depthTexture) {
				if (isCube) throw new Error('target.depthTexture not supported in Cube render targets');
				setupDepthTexture(renderTargetProperties.__webglFramebuffer, renderTarget);
			} else {
				if (isCube) {
					renderTargetProperties.__webglDepthbuffer = [];

					for (let i = 0; i < 6; i++) {
						state.bindFramebuffer(_gl.FRAMEBUFFER, renderTargetProperties.__webglFramebuffer[i]);
						renderTargetProperties.__webglDepthbuffer[i] = _gl.createRenderbuffer();
						setupRenderBufferStorage(renderTargetProperties.__webglDepthbuffer[i], renderTarget, false);
					}
				} else {
					state.bindFramebuffer(_gl.FRAMEBUFFER, renderTargetProperties.__webglFramebuffer);
					renderTargetProperties.__webglDepthbuffer = _gl.createRenderbuffer();
					setupRenderBufferStorage(renderTargetProperties.__webglDepthbuffer, renderTarget, false);
				}
			}

			state.bindFramebuffer(_gl.FRAMEBUFFER, null);
		} // Set up GL resources for the render target


		function setupRenderTarget(renderTarget) {
			const texture = renderTarget.texture;
			const renderTargetProperties = properties.get(renderTarget);
			const textureProperties = properties.get(texture);
			renderTarget.addEventListener('dispose', onRenderTargetDispose);

			if (renderTarget.isWebGLMultipleRenderTargets !== true) {
				textureProperties.__webglTexture = _gl.createTexture();
				textureProperties.__version = texture.version;
				info.memory.textures++;
			}

			const isCube = renderTarget.isWebGLCubeRenderTarget === true;
			const isMultipleRenderTargets = renderTarget.isWebGLMultipleRenderTargets === true;
			const isMultisample = renderTarget.isWebGLMultisampleRenderTarget === true;
			const isRenderTarget3D = texture.isDataTexture3D || texture.isDataTexture2DArray;
			const supportsMips = isPowerOfTwo$1(renderTarget) || isWebGL2; // Handles WebGL2 RGBFormat fallback - #18858

			if (isWebGL2 && texture.format === RGBFormat && (texture.type === FloatType || texture.type === HalfFloatType)) {
				texture.format = RGBAFormat;
				console.warn('THREE.WebGLRenderer: Rendering to textures with RGB format is not supported. Using RGBA format instead.');
			} // Setup framebuffer


			if (isCube) {
				renderTargetProperties.__webglFramebuffer = [];

				for (let i = 0; i < 6; i++) {
					renderTargetProperties.__webglFramebuffer[i] = _gl.createFramebuffer();
				}
			} else {
				renderTargetProperties.__webglFramebuffer = _gl.createFramebuffer();

				if (isMultipleRenderTargets) {
					if (capabilities.drawBuffers) {
						const textures = renderTarget.texture;

						for (let i = 0, il = textures.length; i < il; i++) {
							const attachmentProperties = properties.get(textures[i]);

							if (attachmentProperties.__webglTexture === undefined) {
								attachmentProperties.__webglTexture = _gl.createTexture();
								info.memory.textures++;
							}
						}
					} else {
						console.warn('THREE.WebGLRenderer: WebGLMultipleRenderTargets can only be used with WebGL2 or WEBGL_draw_buffers extension.');
					}
				} else if (isMultisample) {
					if (isWebGL2) {
						renderTargetProperties.__webglMultisampledFramebuffer = _gl.createFramebuffer();
						renderTargetProperties.__webglColorRenderbuffer = _gl.createRenderbuffer();

						_gl.bindRenderbuffer(_gl.RENDERBUFFER, renderTargetProperties.__webglColorRenderbuffer);

						const glFormat = utils.convert(texture.format);
						const glType = utils.convert(texture.type);
						const glInternalFormat = getInternalFormat(texture.internalFormat, glFormat, glType, texture.encoding);
						const samples = getRenderTargetSamples(renderTarget);

						_gl.renderbufferStorageMultisample(_gl.RENDERBUFFER, samples, glInternalFormat, renderTarget.width, renderTarget.height);

						state.bindFramebuffer(_gl.FRAMEBUFFER, renderTargetProperties.__webglMultisampledFramebuffer);

						_gl.framebufferRenderbuffer(_gl.FRAMEBUFFER, _gl.COLOR_ATTACHMENT0, _gl.RENDERBUFFER, renderTargetProperties.__webglColorRenderbuffer);

						_gl.bindRenderbuffer(_gl.RENDERBUFFER, null);

						if (renderTarget.depthBuffer) {
							renderTargetProperties.__webglDepthRenderbuffer = _gl.createRenderbuffer();
							setupRenderBufferStorage(renderTargetProperties.__webglDepthRenderbuffer, renderTarget, true);
						}

						state.bindFramebuffer(_gl.FRAMEBUFFER, null);
					} else {
						console.warn('THREE.WebGLRenderer: WebGLMultisampleRenderTarget can only be used with WebGL2.');
					}
				}
			} // Setup color buffer


			if (isCube) {
				state.bindTexture(_gl.TEXTURE_CUBE_MAP, textureProperties.__webglTexture);
				setTextureParameters(_gl.TEXTURE_CUBE_MAP, texture, supportsMips);

				for (let i = 0; i < 6; i++) {
					setupFrameBufferTexture(renderTargetProperties.__webglFramebuffer[i], renderTarget, texture, _gl.COLOR_ATTACHMENT0, _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i);
				}

				if (textureNeedsGenerateMipmaps(texture, supportsMips)) {
					generateMipmap(_gl.TEXTURE_CUBE_MAP, texture, renderTarget.width, renderTarget.height);
				}

				state.unbindTexture();
			} else if (isMultipleRenderTargets) {
				const textures = renderTarget.texture;

				for (let i = 0, il = textures.length; i < il; i++) {
					const attachment = textures[i];
					const attachmentProperties = properties.get(attachment);
					state.bindTexture(_gl.TEXTURE_2D, attachmentProperties.__webglTexture);
					setTextureParameters(_gl.TEXTURE_2D, attachment, supportsMips);
					setupFrameBufferTexture(renderTargetProperties.__webglFramebuffer, renderTarget, attachment, _gl.COLOR_ATTACHMENT0 + i, _gl.TEXTURE_2D);

					if (textureNeedsGenerateMipmaps(attachment, supportsMips)) {
						generateMipmap(_gl.TEXTURE_2D, attachment, renderTarget.width, renderTarget.height);
					}
				}

				state.unbindTexture();
			} else {
				let glTextureType = _gl.TEXTURE_2D;

				if (isRenderTarget3D) {
					// Render targets containing layers, i.e: Texture 3D and 2d arrays
					if (isWebGL2) {
						const isTexture3D = texture.isDataTexture3D;
						glTextureType = isTexture3D ? _gl.TEXTURE_3D : _gl.TEXTURE_2D_ARRAY;
					} else {
						console.warn('THREE.DataTexture3D and THREE.DataTexture2DArray only supported with WebGL2.');
					}
				}

				state.bindTexture(glTextureType, textureProperties.__webglTexture);
				setTextureParameters(glTextureType, texture, supportsMips);
				setupFrameBufferTexture(renderTargetProperties.__webglFramebuffer, renderTarget, texture, _gl.COLOR_ATTACHMENT0, glTextureType);

				if (textureNeedsGenerateMipmaps(texture, supportsMips)) {
					generateMipmap(glTextureType, texture, renderTarget.width, renderTarget.height, renderTarget.depth);
				}

				state.unbindTexture();
			} // Setup depth and stencil buffers


			if (renderTarget.depthBuffer) {
				setupDepthRenderbuffer(renderTarget);
			}
		}

		function updateRenderTargetMipmap(renderTarget) {
			const supportsMips = isPowerOfTwo$1(renderTarget) || isWebGL2;
			const textures = renderTarget.isWebGLMultipleRenderTargets === true ? renderTarget.texture : [renderTarget.texture];

			for (let i = 0, il = textures.length; i < il; i++) {
				const texture = textures[i];

				if (textureNeedsGenerateMipmaps(texture, supportsMips)) {
					const target = renderTarget.isWebGLCubeRenderTarget ? _gl.TEXTURE_CUBE_MAP : _gl.TEXTURE_2D;

					const webglTexture = properties.get(texture).__webglTexture;

					state.bindTexture(target, webglTexture);
					generateMipmap(target, texture, renderTarget.width, renderTarget.height);
					state.unbindTexture();
				}
			}
		}

		function updateMultisampleRenderTarget(renderTarget) {
			if (renderTarget.isWebGLMultisampleRenderTarget) {
				if (isWebGL2) {
					const width = renderTarget.width;
					const height = renderTarget.height;
					let mask = _gl.COLOR_BUFFER_BIT;
					if (renderTarget.depthBuffer) mask |= _gl.DEPTH_BUFFER_BIT;
					if (renderTarget.stencilBuffer) mask |= _gl.STENCIL_BUFFER_BIT;
					const renderTargetProperties = properties.get(renderTarget);
					state.bindFramebuffer(_gl.READ_FRAMEBUFFER, renderTargetProperties.__webglMultisampledFramebuffer);
					state.bindFramebuffer(_gl.DRAW_FRAMEBUFFER, renderTargetProperties.__webglFramebuffer);

					_gl.blitFramebuffer(0, 0, width, height, 0, 0, width, height, mask, _gl.NEAREST);

					state.bindFramebuffer(_gl.READ_FRAMEBUFFER, null);
					state.bindFramebuffer(_gl.DRAW_FRAMEBUFFER, renderTargetProperties.__webglMultisampledFramebuffer);
				} else {
					console.warn('THREE.WebGLRenderer: WebGLMultisampleRenderTarget can only be used with WebGL2.');
				}
			}
		}

		function getRenderTargetSamples(renderTarget) {
			return isWebGL2 && renderTarget.isWebGLMultisampleRenderTarget ? Math.min(maxSamples, renderTarget.samples) : 0;
		}

		function updateVideoTexture(texture) {
			const frame = info.render.frame; // Check the last frame we updated the VideoTexture

			if (_videoTextures.get(texture) !== frame) {
				_videoTextures.set(texture, frame);

				texture.update();
			}
		} // backwards compatibility


		let warnedTexture2D = false;
		let warnedTextureCube = false;

		function safeSetTexture2D(texture, slot) {
			if (texture && texture.isWebGLRenderTarget) {
				if (warnedTexture2D === false) {
					console.warn('THREE.WebGLTextures.safeSetTexture2D: don\'t use render targets as textures. Use their .texture property instead.');
					warnedTexture2D = true;
				}

				texture = texture.texture;
			}

			setTexture2D(texture, slot);
		}

		function safeSetTextureCube(texture, slot) {
			if (texture && texture.isWebGLCubeRenderTarget) {
				if (warnedTextureCube === false) {
					console.warn('THREE.WebGLTextures.safeSetTextureCube: don\'t use cube render targets as textures. Use their .texture property instead.');
					warnedTextureCube = true;
				}

				texture = texture.texture;
			}

			setTextureCube(texture, slot);
		} //


		this.allocateTextureUnit = allocateTextureUnit;
		this.resetTextureUnits = resetTextureUnits;
		this.setTexture2D = setTexture2D;
		this.setTexture2DArray = setTexture2DArray;
		this.setTexture3D = setTexture3D;
		this.setTextureCube = setTextureCube;
		this.setupRenderTarget = setupRenderTarget;
		this.updateRenderTargetMipmap = updateRenderTargetMipmap;
		this.updateMultisampleRenderTarget = updateMultisampleRenderTarget;
		this.safeSetTexture2D = safeSetTexture2D;
		this.safeSetTextureCube = safeSetTextureCube;
	}

	function WebGLUtils(gl, extensions, capabilities) {
		const isWebGL2 = capabilities.isWebGL2;

		function convert(p) {
			let extension;
			if (p === UnsignedByteType) return gl.UNSIGNED_BYTE;
			if (p === UnsignedShort4444Type) return gl.UNSIGNED_SHORT_4_4_4_4;
			if (p === UnsignedShort5551Type) return gl.UNSIGNED_SHORT_5_5_5_1;
			if (p === UnsignedShort565Type) return gl.UNSIGNED_SHORT_5_6_5;
			if (p === ByteType) return gl.BYTE;
			if (p === ShortType) return gl.SHORT;
			if (p === UnsignedShortType) return gl.UNSIGNED_SHORT;
			if (p === IntType) return gl.INT;
			if (p === UnsignedIntType) return gl.UNSIGNED_INT;
			if (p === FloatType) return gl.FLOAT;

			if (p === HalfFloatType) {
				if (isWebGL2) return gl.HALF_FLOAT;
				extension = extensions.get('OES_texture_half_float');

				if (extension !== null) {
					return extension.HALF_FLOAT_OES;
				} else {
					return null;
				}
			}

			if (p === AlphaFormat) return gl.ALPHA;
			if (p === RGBFormat) return gl.RGB;
			if (p === RGBAFormat) return gl.RGBA;
			if (p === LuminanceFormat) return gl.LUMINANCE;
			if (p === LuminanceAlphaFormat) return gl.LUMINANCE_ALPHA;
			if (p === DepthFormat) return gl.DEPTH_COMPONENT;
			if (p === DepthStencilFormat) return gl.DEPTH_STENCIL;
			if (p === RedFormat) return gl.RED; // WebGL2 formats.

			if (p === RedIntegerFormat) return gl.RED_INTEGER;
			if (p === RGFormat) return gl.RG;
			if (p === RGIntegerFormat) return gl.RG_INTEGER;
			if (p === RGBIntegerFormat) return gl.RGB_INTEGER;
			if (p === RGBAIntegerFormat) return gl.RGBA_INTEGER;

			if (p === RGB_S3TC_DXT1_Format || p === RGBA_S3TC_DXT1_Format || p === RGBA_S3TC_DXT3_Format || p === RGBA_S3TC_DXT5_Format) {
				extension = extensions.get('WEBGL_compressed_texture_s3tc');

				if (extension !== null) {
					if (p === RGB_S3TC_DXT1_Format) return extension.COMPRESSED_RGB_S3TC_DXT1_EXT;
					if (p === RGBA_S3TC_DXT1_Format) return extension.COMPRESSED_RGBA_S3TC_DXT1_EXT;
					if (p === RGBA_S3TC_DXT3_Format) return extension.COMPRESSED_RGBA_S3TC_DXT3_EXT;
					if (p === RGBA_S3TC_DXT5_Format) return extension.COMPRESSED_RGBA_S3TC_DXT5_EXT;
				} else {
					return null;
				}
			}

			if (p === RGB_PVRTC_4BPPV1_Format || p === RGB_PVRTC_2BPPV1_Format || p === RGBA_PVRTC_4BPPV1_Format || p === RGBA_PVRTC_2BPPV1_Format) {
				extension = extensions.get('WEBGL_compressed_texture_pvrtc');

				if (extension !== null) {
					if (p === RGB_PVRTC_4BPPV1_Format) return extension.COMPRESSED_RGB_PVRTC_4BPPV1_IMG;
					if (p === RGB_PVRTC_2BPPV1_Format) return extension.COMPRESSED_RGB_PVRTC_2BPPV1_IMG;
					if (p === RGBA_PVRTC_4BPPV1_Format) return extension.COMPRESSED_RGBA_PVRTC_4BPPV1_IMG;
					if (p === RGBA_PVRTC_2BPPV1_Format) return extension.COMPRESSED_RGBA_PVRTC_2BPPV1_IMG;
				} else {
					return null;
				}
			}

			if (p === RGB_ETC1_Format) {
				extension = extensions.get('WEBGL_compressed_texture_etc1');

				if (extension !== null) {
					return extension.COMPRESSED_RGB_ETC1_WEBGL;
				} else {
					return null;
				}
			}

			if (p === RGB_ETC2_Format || p === RGBA_ETC2_EAC_Format) {
				extension = extensions.get('WEBGL_compressed_texture_etc');

				if (extension !== null) {
					if (p === RGB_ETC2_Format) return extension.COMPRESSED_RGB8_ETC2;
					if (p === RGBA_ETC2_EAC_Format) return extension.COMPRESSED_RGBA8_ETC2_EAC;
				}
			}

			if (p === RGBA_ASTC_4x4_Format || p === RGBA_ASTC_5x4_Format || p === RGBA_ASTC_5x5_Format || p === RGBA_ASTC_6x5_Format || p === RGBA_ASTC_6x6_Format || p === RGBA_ASTC_8x5_Format || p === RGBA_ASTC_8x6_Format || p === RGBA_ASTC_8x8_Format || p === RGBA_ASTC_10x5_Format || p === RGBA_ASTC_10x6_Format || p === RGBA_ASTC_10x8_Format || p === RGBA_ASTC_10x10_Format || p === RGBA_ASTC_12x10_Format || p === RGBA_ASTC_12x12_Format || p === SRGB8_ALPHA8_ASTC_4x4_Format || p === SRGB8_ALPHA8_ASTC_5x4_Format || p === SRGB8_ALPHA8_ASTC_5x5_Format || p === SRGB8_ALPHA8_ASTC_6x5_Format || p === SRGB8_ALPHA8_ASTC_6x6_Format || p === SRGB8_ALPHA8_ASTC_8x5_Format || p === SRGB8_ALPHA8_ASTC_8x6_Format || p === SRGB8_ALPHA8_ASTC_8x8_Format || p === SRGB8_ALPHA8_ASTC_10x5_Format || p === SRGB8_ALPHA8_ASTC_10x6_Format || p === SRGB8_ALPHA8_ASTC_10x8_Format || p === SRGB8_ALPHA8_ASTC_10x10_Format || p === SRGB8_ALPHA8_ASTC_12x10_Format || p === SRGB8_ALPHA8_ASTC_12x12_Format) {
				extension = extensions.get('WEBGL_compressed_texture_astc');

				if (extension !== null) {
					// TODO Complete?
					return p;
				} else {
					return null;
				}
			}

			if (p === RGBA_BPTC_Format) {
				extension = extensions.get('EXT_texture_compression_bptc');

				if (extension !== null) {
					// TODO Complete?
					return p;
				} else {
					return null;
				}
			}

			if (p === UnsignedInt248Type) {
				if (isWebGL2) return gl.UNSIGNED_INT_24_8;
				extension = extensions.get('WEBGL_depth_texture');

				if (extension !== null) {
					return extension.UNSIGNED_INT_24_8_WEBGL;
				} else {
					return null;
				}
			}
		}

		return {
			convert: convert
		};
	}

	class Group extends Object3D {
		constructor() {
			super();
			this.type = 'Group';
		}

	}

	Group.prototype.isGroup = true;

	class ArrayCamera extends PerspectiveCamera {
		constructor(array = []) {
			super();
			this.cameras = array;
		}

	}

	ArrayCamera.prototype.isArrayCamera = true;

	/**
	 * @author jsantell / https://www.jsantell.com/
	 * @author mrdoob / http://mrdoob.com/
	 */
	var cameraLPos = new Vector3();
	var cameraRPos = new Vector3();
	/**
	 * Assumes 2 cameras that are parallel and share an X-axis, and that
	 * the cameras' projection and world matrices have already been set.
	 * And that near and far planes are identical for both cameras.
	 * Visualization of this technique: https://computergraphics.stackexchange.com/a/4765
	 */

	function setProjectionFromUnion(camera, cameraL, cameraR) {
		cameraLPos.setFromMatrixPosition(cameraL.matrixWorld);
		cameraRPos.setFromMatrixPosition(cameraR.matrixWorld);
		var ipd = cameraLPos.distanceTo(cameraRPos);
		var projL = cameraL.projectionMatrix.elements;
		var projR = cameraR.projectionMatrix.elements; // VR systems will have identical far and near planes, and
		// most likely identical top and bottom frustum extents.
		// Use the left camera for these values.

		var near = projL[14] / (projL[10] - 1);
		var far = projL[14] / (projL[10] + 1);
		var topFov = (projL[9] + 1) / projL[5];
		var bottomFov = (projL[9] - 1) / projL[5];
		var leftFov = (projL[8] - 1) / projL[0];
		var rightFov = (projR[8] + 1) / projR[0];
		var left = near * leftFov;
		var right = near * rightFov; // Calculate the new camera's position offset from the
		// left camera. xOffset should be roughly half `ipd`.

		var zOffset = ipd / (-leftFov + rightFov);
		var xOffset = zOffset * -leftFov; // TODO: Better way to apply this offset?

		cameraL.matrixWorld.decompose(camera.position, camera.quaternion, camera.scale);
		camera.translateX(xOffset);
		camera.translateZ(zOffset);
		camera.matrixWorld.compose(camera.position, camera.quaternion, camera.scale);
		camera.matrixWorldInverse.getInverse(camera.matrixWorld); // Find the union of the frustum values of the cameras and scale
		// the values so that the near plane's position does not change in world space,
		// although must now be relative to the new union camera.

		var near2 = near + zOffset;
		var far2 = far + zOffset;
		var left2 = left - xOffset;
		var right2 = right + (ipd - xOffset);
		var top2 = topFov * far / far2 * near2;
		var bottom2 = bottomFov * far / far2 * near2;
		camera.projectionMatrix.makePerspective(left2, right2, top2, bottom2, near2, far2);
	}

	/**
	 * @author mrdoob / http://mrdoob.com/
	 */

	function WebVRManager(renderer) {
		var renderWidth, renderHeight;
		var scope = this;
		var device = null;
		var frameData = null;
		var poseTarget = null;
		var controllers = [];
		var standingMatrix = new Matrix4();
		var standingMatrixInverse = new Matrix4();
		var framebufferScaleFactor = 1.0;
		var referenceSpaceType = 'local-floor';

		if (typeof window !== 'undefined' && 'VRFrameData' in window) {
			frameData = new window.VRFrameData();
			window.addEventListener('vrdisplaypresentchange', onVRDisplayPresentChange, false);
		}

		var matrixWorldInverse = new Matrix4();
		var tempQuaternion = new Quaternion();
		var tempPosition = new Vector3();
		var cameraL = new PerspectiveCamera();
		cameraL.viewport = new Vector4();
		cameraL.layers.enable(1);
		var cameraR = new PerspectiveCamera();
		cameraR.viewport = new Vector4();
		cameraR.layers.enable(2);
		var cameraVR = new ArrayCamera([cameraL, cameraR]);
		cameraVR.layers.enable(1);
		cameraVR.layers.enable(2);
		var currentSize = new Vector2(),
				currentPixelRatio;

		function onVRDisplayPresentChange() {
			var isPresenting = scope.isPresenting = device !== null && device.isPresenting === true;

			if (isPresenting) {
				var eyeParameters = device.getEyeParameters('left');
				renderWidth = 2 * eyeParameters.renderWidth * framebufferScaleFactor;
				renderHeight = eyeParameters.renderHeight * framebufferScaleFactor;
				currentPixelRatio = renderer.getPixelRatio();
				renderer.getSize(currentSize);
				renderer.setDrawingBufferSize(renderWidth, renderHeight, 1);
				cameraL.viewport.set(0, 0, renderWidth / 2, renderHeight);
				cameraR.viewport.set(renderWidth / 2, 0, renderWidth / 2, renderHeight);
				animation.start();
				scope.dispatchEvent({
					type: 'sessionstart'
				});
			} else {
				if (scope.enabled) {
					renderer.setDrawingBufferSize(currentSize.width, currentSize.height, currentPixelRatio);
				}

				animation.stop();
				scope.dispatchEvent({
					type: 'sessionend'
				});
			}
		} //


		var triggers = [];
		var grips = [];

		function findGamepad(id) {
			var gamepads = navigator.getGamepads && navigator.getGamepads();

			for (var i = 0, l = gamepads.length; i < l; i++) {
				var gamepad = gamepads[i];

				if (gamepad && (gamepad.id === 'Daydream Controller' || gamepad.id === 'Gear VR Controller' || gamepad.id === 'Oculus Go Controller' || gamepad.id === 'OpenVR Gamepad' || gamepad.id.startsWith('Oculus Touch') || gamepad.id.startsWith('HTC Vive Focus') || gamepad.id.startsWith('Spatial Controller'))) {
					var hand = gamepad.hand;
					if (id === 0 && (hand === '' || hand === 'right')) return gamepad;
					if (id === 1 && hand === 'left') return gamepad;
				}
			}
		}

		function updateControllers() {
			for (var i = 0; i < controllers.length; i++) {
				var controller = controllers[i];
				var gamepad = findGamepad(i);

				if (gamepad !== undefined && gamepad.pose !== undefined) {
					if (gamepad.pose === null) return; // Pose

					var pose = gamepad.pose;
					if (pose.hasPosition === false) controller.position.set(0.2, -0.6, -0.05);
					if (pose.position !== null) controller.position.fromArray(pose.position);
					if (pose.orientation !== null) controller.quaternion.fromArray(pose.orientation);
					controller.matrix.compose(controller.position, controller.quaternion, controller.scale);
					controller.matrix.premultiply(standingMatrix);
					controller.matrix.decompose(controller.position, controller.quaternion, controller.scale);
					controller.matrixWorldNeedsUpdate = true;
					controller.visible = true; // Trigger

					var buttonId = gamepad.id === 'Daydream Controller' ? 0 : 1;
					if (triggers[i] === undefined) triggers[i] = false;

					if (triggers[i] !== gamepad.buttons[buttonId].pressed) {
						triggers[i] = gamepad.buttons[buttonId].pressed;

						if (triggers[i] === true) {
							controller.dispatchEvent({
								type: 'selectstart'
							});
						} else {
							controller.dispatchEvent({
								type: 'selectend'
							});
							controller.dispatchEvent({
								type: 'select'
							});
						}
					} // Grip


					buttonId = 2;
					if (grips[i] === undefined) grips[i] = false; // Skip if the grip button doesn't exist on this controller

					if (gamepad.buttons[buttonId] !== undefined) {
						if (grips[i] !== gamepad.buttons[buttonId].pressed) {
							grips[i] = gamepad.buttons[buttonId].pressed;

							if (grips[i] === true) {
								controller.dispatchEvent({
									type: 'squeezestart'
								});
							} else {
								controller.dispatchEvent({
									type: 'squeezeend'
								});
								controller.dispatchEvent({
									type: 'squeeze'
								});
							}
						}
					}
				} else {
					controller.visible = false;
				}
			}
		}

		function updateViewportFromBounds(viewport, bounds) {
			if (bounds !== null && bounds.length === 4) {
				viewport.set(bounds[0] * renderWidth, bounds[1] * renderHeight, bounds[2] * renderWidth, bounds[3] * renderHeight);
			}
		} //


		this.enabled = false;

		this.getController = function (id) {
			var controller = controllers[id];

			if (controller === undefined) {
				controller = new Group();
				controller.matrixAutoUpdate = false;
				controller.visible = false;
				controllers[id] = controller;
			}

			return controller;
		};

		this.getDevice = function () {
			return device;
		};

		this.setDevice = function (value) {
			if (value !== undefined) device = value;
			animation.setContext(value);
		};

		this.setFramebufferScaleFactor = function (value) {
			framebufferScaleFactor = value;
		};

		this.setReferenceSpaceType = function (value) {
			referenceSpaceType = value;
		};

		this.setPoseTarget = function (object) {
			if (object !== undefined) poseTarget = object;
		};

		this.getCamera = function (camera) {
			var userHeight = referenceSpaceType === 'local-floor' ? 1.6 : 0;
			device.depthNear = camera.near;
			device.depthFar = camera.far;
			device.getFrameData(frameData); //

			if (referenceSpaceType === 'local-floor') {
				var stageParameters = device.stageParameters;

				if (stageParameters) {
					standingMatrix.fromArray(stageParameters.sittingToStandingTransform);
				} else {
					standingMatrix.makeTranslation(0, userHeight, 0);
				}
			}

			var pose = frameData.pose;
			var poseObject = poseTarget !== null ? poseTarget : camera; // We want to manipulate poseObject by its position and quaternion components since users may rely on them.

			poseObject.matrix.copy(standingMatrix);
			poseObject.matrix.decompose(poseObject.position, poseObject.quaternion, poseObject.scale);

			if (pose.orientation !== null) {
				tempQuaternion.fromArray(pose.orientation);
				poseObject.quaternion.multiply(tempQuaternion);
			}

			if (pose.position !== null) {
				tempQuaternion.setFromRotationMatrix(standingMatrix);
				tempPosition.fromArray(pose.position);
				tempPosition.applyQuaternion(tempQuaternion);
				poseObject.position.add(tempPosition);
			}

			poseObject.updateMatrixWorld();
			var children = poseObject.children;

			for (var i = 0, l = children.length; i < l; i++) {
				children[i].updateMatrixWorld(true);
			} //


			cameraL.near = camera.near;
			cameraR.near = camera.near;
			cameraL.far = camera.far;
			cameraR.far = camera.far;
			cameraL.matrixWorldInverse.fromArray(frameData.leftViewMatrix);
			cameraR.matrixWorldInverse.fromArray(frameData.rightViewMatrix); // TODO (mrdoob) Double check this code

			standingMatrixInverse.getInverse(standingMatrix);

			if (referenceSpaceType === 'local-floor') {
				cameraL.matrixWorldInverse.multiply(standingMatrixInverse);
				cameraR.matrixWorldInverse.multiply(standingMatrixInverse);
			}

			var parent = poseObject.parent;

			if (parent !== null) {
				matrixWorldInverse.getInverse(parent.matrixWorld);
				cameraL.matrixWorldInverse.multiply(matrixWorldInverse);
				cameraR.matrixWorldInverse.multiply(matrixWorldInverse);
			} // envMap and Mirror needs camera.matrixWorld


			cameraL.matrixWorld.getInverse(cameraL.matrixWorldInverse);
			cameraR.matrixWorld.getInverse(cameraR.matrixWorldInverse);
			cameraL.projectionMatrix.fromArray(frameData.leftProjectionMatrix);
			cameraR.projectionMatrix.fromArray(frameData.rightProjectionMatrix);
			setProjectionFromUnion(cameraVR, cameraL, cameraR); //

			var layers = device.getLayers();

			if (layers.length) {
				var layer = layers[0];
				updateViewportFromBounds(cameraL.viewport, layer.leftBounds);
				updateViewportFromBounds(cameraR.viewport, layer.rightBounds);
			}

			updateControllers();
			return cameraVR;
		};

		this.getStandingMatrix = function () {
			return standingMatrix;
		};

		this.isPresenting = false; // Animation Loop

		var animation = new WebGLAnimation();

		this.setAnimationLoop = function (callback) {
			animation.setAnimationLoop(callback);
			if (this.isPresenting) animation.start();
		};

		this.submitFrame = function () {
			if (this.isPresenting) device.submitFrame();
		};

		this.dispose = function () {
			if (typeof window !== 'undefined') {
				window.removeEventListener('vrdisplaypresentchange', onVRDisplayPresentChange);
			}
		}; // DEPRECATED


		this.setFrameOfReferenceType = function () {
			console.warn('THREE.WebVRManager: setFrameOfReferenceType() has been deprecated.');
		};

		this.addEventListener = function () {
			/* Stub */
		};
	}

	Object.assign(WebVRManager.prototype, EventDispatcher.prototype);

	const _moveEvent = {
		type: 'move'
	};

	class WebXRController {
		constructor() {
			this._targetRay = null;
			this._grip = null;
			this._hand = null;
		}

		getHandSpace() {
			if (this._hand === null) {
				this._hand = new Group();
				this._hand.matrixAutoUpdate = false;
				this._hand.visible = false;
				this._hand.joints = {};
				this._hand.inputState = {
					pinching: false
				};
			}

			return this._hand;
		}

		getTargetRaySpace() {
			if (this._targetRay === null) {
				this._targetRay = new Group();
				this._targetRay.matrixAutoUpdate = false;
				this._targetRay.visible = false;
				this._targetRay.hasLinearVelocity = false;
				this._targetRay.linearVelocity = new Vector3();
				this._targetRay.hasAngularVelocity = false;
				this._targetRay.angularVelocity = new Vector3();
			}

			return this._targetRay;
		}

		getGripSpace() {
			if (this._grip === null) {
				this._grip = new Group();
				this._grip.matrixAutoUpdate = false;
				this._grip.visible = false;
				this._grip.hasLinearVelocity = false;
				this._grip.linearVelocity = new Vector3();
				this._grip.hasAngularVelocity = false;
				this._grip.angularVelocity = new Vector3();
			}

			return this._grip;
		}

		dispatchEvent(event) {
			if (this._targetRay !== null) {
				this._targetRay.dispatchEvent(event);
			}

			if (this._grip !== null) {
				this._grip.dispatchEvent(event);
			}

			if (this._hand !== null) {
				this._hand.dispatchEvent(event);
			}

			return this;
		}

		disconnect(inputSource) {
			this.dispatchEvent({
				type: 'disconnected',
				data: inputSource
			});

			if (this._targetRay !== null) {
				this._targetRay.visible = false;
			}

			if (this._grip !== null) {
				this._grip.visible = false;
			}

			if (this._hand !== null) {
				this._hand.visible = false;
			}

			return this;
		}

		update(inputSource, frame, referenceSpace) {
			let inputPose = null;
			let gripPose = null;
			let handPose = null;
			const targetRay = this._targetRay;
			const grip = this._grip;
			const hand = this._hand;

			if (inputSource && frame.session.visibilityState !== 'visible-blurred') {
				if (targetRay !== null) {
					inputPose = frame.getPose(inputSource.targetRaySpace, referenceSpace);

					if (inputPose !== null) {
						targetRay.matrix.fromArray(inputPose.transform.matrix);
						targetRay.matrix.decompose(targetRay.position, targetRay.rotation, targetRay.scale);

						if (inputPose.linearVelocity) {
							targetRay.hasLinearVelocity = true;
							targetRay.linearVelocity.copy(inputPose.linearVelocity);
						} else {
							targetRay.hasLinearVelocity = false;
						}

						if (inputPose.angularVelocity) {
							targetRay.hasAngularVelocity = true;
							targetRay.angularVelocity.copy(inputPose.angularVelocity);
						} else {
							targetRay.hasAngularVelocity = false;
						}

						this.dispatchEvent(_moveEvent);
					}
				}

				if (hand && inputSource.hand) {
					handPose = true;

					for (const inputjoint of inputSource.hand.values()) {
						// Update the joints groups with the XRJoint poses
						const jointPose = frame.getJointPose(inputjoint, referenceSpace);

						if (hand.joints[inputjoint.jointName] === undefined) {
							// The transform of this joint will be updated with the joint pose on each frame
							const joint = new Group();
							joint.matrixAutoUpdate = false;
							joint.visible = false;
							hand.joints[inputjoint.jointName] = joint; // ??

							hand.add(joint);
						}

						const joint = hand.joints[inputjoint.jointName];

						if (jointPose !== null) {
							joint.matrix.fromArray(jointPose.transform.matrix);
							joint.matrix.decompose(joint.position, joint.rotation, joint.scale);
							joint.jointRadius = jointPose.radius;
						}

						joint.visible = jointPose !== null;
					} // Custom events
					// Check pinchz


					const indexTip = hand.joints['index-finger-tip'];
					const thumbTip = hand.joints['thumb-tip'];
					const distance = indexTip.position.distanceTo(thumbTip.position);
					const distanceToPinch = 0.02;
					const threshold = 0.005;

					if (hand.inputState.pinching && distance > distanceToPinch + threshold) {
						hand.inputState.pinching = false;
						this.dispatchEvent({
							type: 'pinchend',
							handedness: inputSource.handedness,
							target: this
						});
					} else if (!hand.inputState.pinching && distance <= distanceToPinch - threshold) {
						hand.inputState.pinching = true;
						this.dispatchEvent({
							type: 'pinchstart',
							handedness: inputSource.handedness,
							target: this
						});
					}
				} else {
					if (grip !== null && inputSource.gripSpace) {
						gripPose = frame.getPose(inputSource.gripSpace, referenceSpace);

						if (gripPose !== null) {
							grip.matrix.fromArray(gripPose.transform.matrix);
							grip.matrix.decompose(grip.position, grip.rotation, grip.scale);

							if (gripPose.linearVelocity) {
								grip.hasLinearVelocity = true;
								grip.linearVelocity.copy(gripPose.linearVelocity);
							} else {
								grip.hasLinearVelocity = false;
							}

							if (gripPose.angularVelocity) {
								grip.hasAngularVelocity = true;
								grip.angularVelocity.copy(gripPose.angularVelocity);
							} else {
								grip.hasAngularVelocity = false;
							}
						}
					}
				}
			}

			if (targetRay !== null) {
				targetRay.visible = inputPose !== null;
			}

			if (grip !== null) {
				grip.visible = gripPose !== null;
			}

			if (hand !== null) {
				hand.visible = handPose !== null;
			}

			return this;
		}

	}

	class WebXRManager extends EventDispatcher {
		constructor(renderer, gl) {
			super();
			const scope = this;
			const state = renderer.state;
			let session = null;
			let framebufferScaleFactor = 1.0;
			var poseTarget = null;
			let referenceSpace = null;
			let referenceSpaceType = 'local-floor';
			let pose = null;
			var layers = [];
			let glBinding = null;
			let glFramebuffer = null;
			let glProjLayer = null;
			let glBaseLayer = null;
			let isMultisample = false;
			let glMultisampledFramebuffer = null;
			let glColorRenderbuffer = null;
			let glDepthRenderbuffer = null;
			let xrFrame = null;
			let depthStyle = null;
			let clearStyle = null;
			const controllers = [];
			const inputSourcesMap = new Map(); //

			const cameraL = new PerspectiveCamera();
			cameraL.layers.enable(1);
			cameraL.viewport = new Vector4();
			const cameraR = new PerspectiveCamera();
			cameraR.layers.enable(2);
			cameraR.viewport = new Vector4();
			const cameras = [cameraL, cameraR];
			const cameraVR = new ArrayCamera();
			cameraVR.layers.enable(1);
			cameraVR.layers.enable(2);
			let _currentDepthNear = null;
			let _currentDepthFar = null; //

			this.cameraAutoUpdate = true;
			this.layersEnabled = false;
			this.enabled = false;
			this.isPresenting = false;

			this.getCameraPose = function () {
				return pose;
			};

			this.getController = function (index) {
				let controller = controllers[index];

				if (controller === undefined) {
					controller = new WebXRController();
					controllers[index] = controller;
				}

				return controller.getTargetRaySpace();
			};

			this.getControllerGrip = function (index) {
				let controller = controllers[index];

				if (controller === undefined) {
					controller = new WebXRController();
					controllers[index] = controller;
				}

				return controller.getGripSpace();
			};

			this.getHand = function (index) {
				let controller = controllers[index];

				if (controller === undefined) {
					controller = new WebXRController();
					controllers[index] = controller;
				}

				return controller.getHandSpace();
			}; //


			function onSessionEvent(event) {
				const controller = inputSourcesMap.get(event.inputSource);

				if (controller) {
					controller.dispatchEvent({
						type: event.type,
						data: event.inputSource
					});
				}
			}

			function onSessionEnd() {
				inputSourcesMap.forEach(function (controller, inputSource) {
					controller.disconnect(inputSource);
				});
				inputSourcesMap.clear();
				_currentDepthNear = null;
				_currentDepthFar = null; // restore framebuffer/rendering state

				state.bindXRFramebuffer(null);
				renderer.setRenderTarget(renderer.getRenderTarget());
				if (glFramebuffer) gl.deleteFramebuffer(glFramebuffer);
				if (glMultisampledFramebuffer) gl.deleteFramebuffer(glMultisampledFramebuffer);
				if (glColorRenderbuffer) gl.deleteRenderbuffer(glColorRenderbuffer);
				if (glDepthRenderbuffer) gl.deleteRenderbuffer(glDepthRenderbuffer);
				glFramebuffer = null;
				glMultisampledFramebuffer = null;
				glColorRenderbuffer = null;
				glDepthRenderbuffer = null;
				glBaseLayer = null;
				glProjLayer = null;
				glBinding = null;
				session = null; //

				animation.stop();
				scope.isPresenting = false;
				scope.dispatchEvent({
					type: 'sessionend'
				});
			}

			this.setFramebufferScaleFactor = function (value) {
				framebufferScaleFactor = value;

				if (scope.isPresenting === true) {
					console.warn('THREE.WebXRManager: Cannot change framebuffer scale while presenting.');
				}
			};

			this.setReferenceSpaceType = function (value) {
				referenceSpaceType = value;

				if (scope.isPresenting === true) {
					console.warn('THREE.WebXRManager: Cannot change reference space type while presenting.');
				}
			};

			this.getReferenceSpace = function () {
				return referenceSpace;
			};

			this.getBaseLayer = function () {
				return glProjLayer !== null ? glProjLayer : glBaseLayer;
			};

			this.getBinding = function () {
				return glBinding;
			};

			this.getFrame = function () {
				return xrFrame;
			};

			this.getSession = function () {
				return session;
			};

			this.setSession = async function (value) {
				session = value;

				if (session !== null) {
					session.addEventListener('select', onSessionEvent);
					session.addEventListener('selectstart', onSessionEvent);
					session.addEventListener('selectend', onSessionEvent);
					session.addEventListener('squeeze', onSessionEvent);
					session.addEventListener('squeezestart', onSessionEvent);
					session.addEventListener('squeezeend', onSessionEvent);
					session.addEventListener('end', onSessionEnd);
					session.addEventListener('inputsourceschange', onInputSourcesChange);
					const attributes = gl.getContextAttributes();

					if (attributes.xrCompatible !== true) {
						await gl.makeXRCompatible();
					}

					if (session.renderState.layers === undefined) {
						const layerInit = {
							antialias: attributes.antialias,
							alpha: attributes.alpha,
							depth: attributes.depth,
							stencil: attributes.stencil,
							framebufferScaleFactor: framebufferScaleFactor
						};
						glBaseLayer = new XRWebGLLayer(session, gl, layerInit);
						session.updateRenderState({
							baseLayer: glBaseLayer
						});
					} else if (gl instanceof WebGLRenderingContext) {
						// Use old style webgl layer because we can't use MSAA
						// WebGL2 support.
						const layerInit = {
							antialias: true,
							alpha: attributes.alpha,
							depth: attributes.depth,
							stencil: attributes.stencil,
							framebufferScaleFactor: framebufferScaleFactor
						};
						glBaseLayer = new XRWebGLLayer(session, gl, layerInit);
						session.updateRenderState({
							layers: [glBaseLayer]
						});
					} else {
						isMultisample = attributes.antialias;
						let depthFormat = null;

						if (attributes.depth) {
							clearStyle = gl.DEPTH_BUFFER_BIT;
							if (attributes.stencil) clearStyle |= gl.STENCIL_BUFFER_BIT;
							depthStyle = attributes.stencil ? gl.DEPTH_STENCIL_ATTACHMENT : gl.DEPTH_ATTACHMENT;
							depthFormat = attributes.stencil ? gl.DEPTH24_STENCIL8 : gl.DEPTH_COMPONENT24;
						}

						const projectionlayerInit = {
							colorFormat: attributes.alpha ? gl.RGBA8 : gl.RGB8,
							depthFormat: depthFormat,
							scaleFactor: framebufferScaleFactor
						};
						glBinding = new XRWebGLBinding(session, gl);
						glProjLayer = glBinding.createProjectionLayer(projectionlayerInit);
						glFramebuffer = gl.createFramebuffer();
						session.updateRenderState({
							layers: [glProjLayer]
						});

						if (isMultisample) {
							glMultisampledFramebuffer = gl.createFramebuffer();
							glColorRenderbuffer = gl.createRenderbuffer();
							gl.bindRenderbuffer(gl.RENDERBUFFER, glColorRenderbuffer);
							gl.renderbufferStorageMultisample(gl.RENDERBUFFER, 4, gl.RGBA8, glProjLayer.textureWidth, glProjLayer.textureHeight);
							state.bindFramebuffer(gl.FRAMEBUFFER, glMultisampledFramebuffer);
							gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.RENDERBUFFER, glColorRenderbuffer);
							gl.bindRenderbuffer(gl.RENDERBUFFER, null);

							if (depthFormat !== null) {
								glDepthRenderbuffer = gl.createRenderbuffer();
								gl.bindRenderbuffer(gl.RENDERBUFFER, glDepthRenderbuffer);
								gl.renderbufferStorageMultisample(gl.RENDERBUFFER, 4, depthFormat, glProjLayer.textureWidth, glProjLayer.textureHeight);
								gl.framebufferRenderbuffer(gl.FRAMEBUFFER, depthStyle, gl.RENDERBUFFER, glDepthRenderbuffer);
								gl.bindRenderbuffer(gl.RENDERBUFFER, null);
							}

							state.bindFramebuffer(gl.FRAMEBUFFER, null);
						}
					}

					referenceSpace = await session.requestReferenceSpace(referenceSpaceType);
					animation.setContext(session);
					animation.start();
					scope.isPresenting = true;
					scope.dispatchEvent({
						type: 'sessionstart'
					});
				}
			};

			this.addLayer = function (layer) {
				if (!window.XRWebGLBinding || !this.layersEnabled || !session) {
					return;
				}

				layers.push(layer);
				this.updateLayers();
			};

			this.removeLayer = function (layer) {
				if (!window.XRWebGLBinding || !this.layersEnabled || !session) {
					return;
				}

				layers.splice(layers.indexOf(layer), 1);
				this.updateLayers();
			};

			this.updateLayers = function () {
				var layersCopy = layers.map(function (x) {
					return x;
				});
				layersCopy.unshift(session.renderState.layers[0]);
				session.updateRenderState({
					layers: layersCopy
				});
			};

			function onInputSourcesChange(event) {
				const inputSources = session.inputSources; // Assign inputSources to available controllers

				for (let i = 0; i < controllers.length; i++) {
					inputSourcesMap.set(inputSources[i], controllers[i]);
				} // Notify disconnected


				for (let i = 0; i < event.removed.length; i++) {
					const inputSource = event.removed[i];
					const controller = inputSourcesMap.get(inputSource);

					if (controller) {
						controller.dispatchEvent({
							type: 'disconnected',
							data: inputSource
						});
						inputSourcesMap.delete(inputSource);
					}
				} // Notify connected


				for (let i = 0; i < event.added.length; i++) {
					const inputSource = event.added[i];
					const controller = inputSourcesMap.get(inputSource);

					if (controller) {
						controller.dispatchEvent({
							type: 'connected',
							data: inputSource
						});
					}
				}
			} //


			const cameraLPos = new Vector3();
			const cameraRPos = new Vector3();
			/**
			 * Assumes 2 cameras that are parallel and share an X-axis, and that
			 * the cameras' projection and world matrices have already been set.
			 * And that near and far planes are identical for both cameras.
			 * Visualization of this technique: https://computergraphics.stackexchange.com/a/4765
			 */

			function setProjectionFromUnion(camera, cameraL, cameraR) {
				cameraLPos.setFromMatrixPosition(cameraL.matrixWorld);
				cameraRPos.setFromMatrixPosition(cameraR.matrixWorld);
				const ipd = cameraLPos.distanceTo(cameraRPos);
				const projL = cameraL.projectionMatrix.elements;
				const projR = cameraR.projectionMatrix.elements; // VR systems will have identical far and near planes, and
				// most likely identical top and bottom frustum extents.
				// Use the left camera for these values.

				const near = projL[14] / (projL[10] - 1);
				const far = projL[14] / (projL[10] + 1);
				const topFov = (projL[9] + 1) / projL[5];
				const bottomFov = (projL[9] - 1) / projL[5];
				const leftFov = (projL[8] - 1) / projL[0];
				const rightFov = (projR[8] + 1) / projR[0];
				const left = near * leftFov;
				const right = near * rightFov; // Calculate the new camera's position offset from the
				// left camera. xOffset should be roughly half `ipd`.

				const zOffset = ipd / (-leftFov + rightFov);
				const xOffset = zOffset * -leftFov; // TODO: Better way to apply this offset?

				cameraL.matrixWorld.decompose(camera.position, camera.quaternion, camera.scale);
				camera.translateX(xOffset);
				camera.translateZ(zOffset);
				camera.matrixWorld.compose(camera.position, camera.quaternion, camera.scale);
				camera.matrixWorldInverse.copy(camera.matrixWorld).invert(); // Find the union of the frustum values of the cameras and scale
				// the values so that the near plane's position does not change in world space,
				// although must now be relative to the new union camera.

				const near2 = near + zOffset;
				const far2 = far + zOffset;
				const left2 = left - xOffset;
				const right2 = right + (ipd - xOffset);
				const top2 = topFov * far / far2 * near2;
				const bottom2 = bottomFov * far / far2 * near2;
				camera.projectionMatrix.makePerspective(left2, right2, top2, bottom2, near2, far2);
			}

			function updateCamera(camera, parent) {
				if (parent === null) {
					camera.matrixWorld.copy(camera.matrix);
				} else {
					camera.matrixWorld.multiplyMatrices(parent.matrixWorld, camera.matrix);
				}

				camera.matrixWorldInverse.copy(camera.matrixWorld).invert();
			}

			this.setPoseTarget = function (object) {
				if (object !== undefined) poseTarget = object;
			};

			this.updateCamera = function (camera) {
				if (session === null) return;
				cameraVR.near = cameraR.near = cameraL.near = camera.near;
				cameraVR.far = cameraR.far = cameraL.far = camera.far;

				if (_currentDepthNear !== cameraVR.near || _currentDepthFar !== cameraVR.far) {
					// Note that the new renderState won't apply until the next frame. See #18320
					session.updateRenderState({
						depthNear: cameraVR.near,
						depthFar: cameraVR.far
					});
					_currentDepthNear = cameraVR.near;
					_currentDepthFar = cameraVR.far;
				}

				const cameras = cameraVR.cameras;
				var object = poseTarget || camera;
				const parent = object.parent;
				updateCamera(cameraVR, parent);

				for (let i = 0; i < cameras.length; i++) {
					updateCamera(cameras[i], parent);
				}

				cameraVR.matrixWorld.decompose(cameraVR.position, cameraVR.quaternion, cameraVR.scale); // update user camera and its children

				object.matrixWorld.copy(cameraVR.matrixWorld);
				object.matrix.copy(cameraVR.matrix);
				object.matrix.decompose(object.position, object.quaternion, object.scale);
				const children = object.children;

				for (let i = 0, l = children.length; i < l; i++) {
					children[i].updateMatrixWorld(true);
				} // update projection matrix for proper view frustum culling


				if (cameras.length === 2) {
					setProjectionFromUnion(cameraVR, cameraL, cameraR);
				} else {
					// assume single camera setup (AR)
					cameraVR.projectionMatrix.copy(cameraL.projectionMatrix);
				}
			};

			this.getCamera = function () {
				return cameraVR;
			};

			this.getFoveation = function () {
				if (glProjLayer !== null) {
					return glProjLayer.fixedFoveation;
				}

				if (glBaseLayer !== null) {
					return glBaseLayer.fixedFoveation;
				}

				return undefined;
			};

			this.setFoveation = function (foveation) {
				// 0 = no foveation = full resolution
				// 1 = maximum foveation = the edges render at lower resolution
				if (glProjLayer !== null) {
					glProjLayer.fixedFoveation = foveation;
				}

				if (glBaseLayer !== null && glBaseLayer.fixedFoveation !== undefined) {
					glBaseLayer.fixedFoveation = foveation;
				}
			}; // Animation Loop


			let onAnimationFrameCallback = null;

			function onAnimationFrame(time, frame) {
				pose = frame.getViewerPose(referenceSpace);
				xrFrame = frame;

				if (pose !== null) {
					const views = pose.views;

					if (glBaseLayer !== null) {
						state.bindXRFramebuffer(glBaseLayer.framebuffer);
					}

					let cameraVRNeedsUpdate = false; // check if it's necessary to rebuild cameraVR's camera list

					if (views.length !== cameraVR.cameras.length) {
						cameraVR.cameras.length = 0;
						cameraVRNeedsUpdate = true;
					}

					for (let i = 0; i < views.length; i++) {
						const view = views[i];
						let viewport = null;

						if (glBaseLayer !== null) {
							viewport = glBaseLayer.getViewport(view);
						} else {
							const glSubImage = glBinding.getViewSubImage(glProjLayer, view);
							state.bindXRFramebuffer(glFramebuffer);

							if (glSubImage.depthStencilTexture !== undefined) {
								gl.framebufferTexture2D(gl.FRAMEBUFFER, depthStyle, gl.TEXTURE_2D, glSubImage.depthStencilTexture, 0);
							}

							gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, glSubImage.colorTexture, 0);
							viewport = glSubImage.viewport;
						}

						const camera = cameras[i];
						camera.matrix.fromArray(view.transform.matrix);
						camera.projectionMatrix.fromArray(view.projectionMatrix);
						camera.viewport.set(viewport.x, viewport.y, viewport.width, viewport.height);

						if (i === 0) {
							cameraVR.matrix.copy(camera.matrix);
						}

						if (cameraVRNeedsUpdate === true) {
							cameraVR.cameras.push(camera);
						}
					}

					if (isMultisample) {
						state.bindXRFramebuffer(glMultisampledFramebuffer);
						if (clearStyle !== null) gl.clear(clearStyle);
					}
				} //


				const inputSources = session.inputSources;

				for (let i = 0; i < controllers.length; i++) {
					const controller = controllers[i];
					const inputSource = inputSources[i];
					controller.update(inputSource, frame, referenceSpace);
				}

				if (onAnimationFrameCallback) onAnimationFrameCallback(time, frame);

				if (isMultisample) {
					const width = glProjLayer.textureWidth;
					const height = glProjLayer.textureHeight;
					state.bindFramebuffer(gl.READ_FRAMEBUFFER, glMultisampledFramebuffer);
					state.bindFramebuffer(gl.DRAW_FRAMEBUFFER, glFramebuffer); // Invalidate the depth here to avoid flush of the depth data to main memory.

					gl.invalidateFramebuffer(gl.READ_FRAMEBUFFER, [depthStyle]);
					gl.invalidateFramebuffer(gl.DRAW_FRAMEBUFFER, [depthStyle]);
					gl.blitFramebuffer(0, 0, width, height, 0, 0, width, height, gl.COLOR_BUFFER_BIT, gl.NEAREST); // Invalidate the MSAA buffer because it's not needed anymore.

					gl.invalidateFramebuffer(gl.READ_FRAMEBUFFER, [gl.COLOR_ATTACHMENT0]);
					state.bindFramebuffer(gl.READ_FRAMEBUFFER, null);
					state.bindFramebuffer(gl.DRAW_FRAMEBUFFER, null);
					state.bindFramebuffer(gl.FRAMEBUFFER, glMultisampledFramebuffer);
				}

				xrFrame = null;
			}

			const animation = new WebGLAnimation();
			animation.setAnimationLoop(onAnimationFrame);

			this.setAnimationLoop = function (callback) {
				onAnimationFrameCallback = callback;
			};

			this.dispose = function () {};
		}

	}

	function WebGLMaterials(properties) {
		function refreshFogUniforms(uniforms, fog) {
			uniforms.fogColor.value.copy(fog.color);

			if (fog.isFog) {
				uniforms.fogNear.value = fog.near;
				uniforms.fogFar.value = fog.far;
			} else if (fog.isFogExp2) {
				uniforms.fogDensity.value = fog.density;
			}
		}

		function refreshMaterialUniforms(uniforms, material, pixelRatio, height, transmissionRenderTarget) {
			if (material.isMeshBasicMaterial) {
				refreshUniformsCommon(uniforms, material);
			} else if (material.isMeshLambertMaterial) {
				refreshUniformsCommon(uniforms, material);
				refreshUniformsLambert(uniforms, material);
			} else if (material.isMeshToonMaterial) {
				refreshUniformsCommon(uniforms, material);
				refreshUniformsToon(uniforms, material);
			} else if (material.isMeshPhongMaterial) {
				refreshUniformsCommon(uniforms, material);
				refreshUniformsPhong(uniforms, material);
			} else if (material.isMeshStandardMaterial) {
				refreshUniformsCommon(uniforms, material);

				if (material.isMeshPhysicalMaterial) {
					refreshUniformsPhysical(uniforms, material, transmissionRenderTarget);
				} else {
					refreshUniformsStandard(uniforms, material);
				}
			} else if (material.isMeshMatcapMaterial) {
				refreshUniformsCommon(uniforms, material);
				refreshUniformsMatcap(uniforms, material);
			} else if (material.isMeshDepthMaterial) {
				refreshUniformsCommon(uniforms, material);
				refreshUniformsDepth(uniforms, material);
			} else if (material.isMeshDistanceMaterial) {
				refreshUniformsCommon(uniforms, material);
				refreshUniformsDistance(uniforms, material);
			} else if (material.isMeshNormalMaterial) {
				refreshUniformsCommon(uniforms, material);
				refreshUniformsNormal(uniforms, material);
			} else if (material.isLineBasicMaterial) {
				refreshUniformsLine(uniforms, material);

				if (material.isLineDashedMaterial) {
					refreshUniformsDash(uniforms, material);
				}
			} else if (material.isPointsMaterial) {
				refreshUniformsPoints(uniforms, material, pixelRatio, height);
			} else if (material.isSpriteMaterial) {
				refreshUniformsSprites(uniforms, material);
			} else if (material.isShadowMaterial) {
				uniforms.color.value.copy(material.color);
				uniforms.opacity.value = material.opacity;
			} else if (material.isShaderMaterial) {
				material.uniformsNeedUpdate = false; // #15581
			}
		}

		function refreshUniformsCommon(uniforms, material) {
			uniforms.opacity.value = material.opacity;

			if (material.color) {
				uniforms.diffuse.value.copy(material.color);
			}

			if (material.emissive) {
				uniforms.emissive.value.copy(material.emissive).multiplyScalar(material.emissiveIntensity);
			}

			if (material.map) {
				uniforms.map.value = material.map;
			}

			if (material.alphaMap) {
				uniforms.alphaMap.value = material.alphaMap;
			}

			if (material.specularMap) {
				uniforms.specularMap.value = material.specularMap;
			}

			if (material.alphaTest > 0) {
				uniforms.alphaTest.value = material.alphaTest;
			}

			const envMap = properties.get(material).envMap;

			if (envMap) {
				uniforms.envMap.value = envMap;
				uniforms.flipEnvMap.value = envMap.isCubeTexture && envMap.isRenderTargetTexture === false ? -1 : 1;
				uniforms.reflectivity.value = material.reflectivity;
				uniforms.ior.value = material.ior;
				uniforms.refractionRatio.value = material.refractionRatio;

				const maxMipLevel = properties.get(envMap).__maxMipLevel;

				if (maxMipLevel !== undefined) {
					uniforms.maxMipLevel.value = maxMipLevel;
				}
			}

			if (material.lightMap) {
				uniforms.lightMap.value = material.lightMap;
				uniforms.lightMapIntensity.value = material.lightMapIntensity;
			}

			if (material.aoMap) {
				uniforms.aoMap.value = material.aoMap;
				uniforms.aoMapIntensity.value = material.aoMapIntensity;
			} // uv repeat and offset setting priorities
			// 1. color map
			// 2. specular map
			// 3. displacementMap map
			// 4. normal map
			// 5. bump map
			// 6. roughnessMap map
			// 7. metalnessMap map
			// 8. alphaMap map
			// 9. emissiveMap map
			// 10. clearcoat map
			// 11. clearcoat normal map
			// 12. clearcoat roughnessMap map
			// 13. specular intensity map
			// 14. specular tint map
			// 15. transmission map
			// 16. thickness map


			let uvScaleMap;

			if (material.map) {
				uvScaleMap = material.map;
			} else if (material.specularMap) {
				uvScaleMap = material.specularMap;
			} else if (material.displacementMap) {
				uvScaleMap = material.displacementMap;
			} else if (material.normalMap) {
				uvScaleMap = material.normalMap;
			} else if (material.bumpMap) {
				uvScaleMap = material.bumpMap;
			} else if (material.roughnessMap) {
				uvScaleMap = material.roughnessMap;
			} else if (material.metalnessMap) {
				uvScaleMap = material.metalnessMap;
			} else if (material.alphaMap) {
				uvScaleMap = material.alphaMap;
			} else if (material.emissiveMap) {
				uvScaleMap = material.emissiveMap;
			} else if (material.clearcoatMap) {
				uvScaleMap = material.clearcoatMap;
			} else if (material.clearcoatNormalMap) {
				uvScaleMap = material.clearcoatNormalMap;
			} else if (material.clearcoatRoughnessMap) {
				uvScaleMap = material.clearcoatRoughnessMap;
			} else if (material.specularIntensityMap) {
				uvScaleMap = material.specularIntensityMap;
			} else if (material.specularTintMap) {
				uvScaleMap = material.specularTintMap;
			} else if (material.transmissionMap) {
				uvScaleMap = material.transmissionMap;
			} else if (material.thicknessMap) {
				uvScaleMap = material.thicknessMap;
			}

			if (uvScaleMap !== undefined) {
				// backwards compatibility
				if (uvScaleMap.isWebGLRenderTarget) {
					uvScaleMap = uvScaleMap.texture;
				}

				if (uvScaleMap.matrixAutoUpdate === true) {
					uvScaleMap.updateMatrix();
				}

				uniforms.uvTransform.value.copy(uvScaleMap.matrix);
			} // uv repeat and offset setting priorities for uv2
			// 1. ao map
			// 2. light map


			let uv2ScaleMap;

			if (material.aoMap) {
				uv2ScaleMap = material.aoMap;
			} else if (material.lightMap) {
				uv2ScaleMap = material.lightMap;
			}

			if (uv2ScaleMap !== undefined) {
				// backwards compatibility
				if (uv2ScaleMap.isWebGLRenderTarget) {
					uv2ScaleMap = uv2ScaleMap.texture;
				}

				if (uv2ScaleMap.matrixAutoUpdate === true) {
					uv2ScaleMap.updateMatrix();
				}

				uniforms.uv2Transform.value.copy(uv2ScaleMap.matrix);
			}
		}

		function refreshUniformsLine(uniforms, material) {
			uniforms.diffuse.value.copy(material.color);
			uniforms.opacity.value = material.opacity;
		}

		function refreshUniformsDash(uniforms, material) {
			uniforms.dashSize.value = material.dashSize;
			uniforms.totalSize.value = material.dashSize + material.gapSize;
			uniforms.scale.value = material.scale;
		}

		function refreshUniformsPoints(uniforms, material, pixelRatio, height) {
			uniforms.diffuse.value.copy(material.color);
			uniforms.opacity.value = material.opacity;
			uniforms.size.value = material.size * pixelRatio;
			uniforms.scale.value = height * 0.5;

			if (material.map) {
				uniforms.map.value = material.map;
			}

			if (material.alphaMap) {
				uniforms.alphaMap.value = material.alphaMap;
			}

			if (material.alphaTest > 0) {
				uniforms.alphaTest.value = material.alphaTest;
			} // uv repeat and offset setting priorities
			// 1. color map
			// 2. alpha map


			let uvScaleMap;

			if (material.map) {
				uvScaleMap = material.map;
			} else if (material.alphaMap) {
				uvScaleMap = material.alphaMap;
			}

			if (uvScaleMap !== undefined) {
				if (uvScaleMap.matrixAutoUpdate === true) {
					uvScaleMap.updateMatrix();
				}

				uniforms.uvTransform.value.copy(uvScaleMap.matrix);
			}
		}

		function refreshUniformsSprites(uniforms, material) {
			uniforms.diffuse.value.copy(material.color);
			uniforms.opacity.value = material.opacity;
			uniforms.rotation.value = material.rotation;

			if (material.map) {
				uniforms.map.value = material.map;
			}

			if (material.alphaMap) {
				uniforms.alphaMap.value = material.alphaMap;
			}

			if (material.alphaTest > 0) {
				uniforms.alphaTest.value = material.alphaTest;
			} // uv repeat and offset setting priorities
			// 1. color map
			// 2. alpha map


			let uvScaleMap;

			if (material.map) {
				uvScaleMap = material.map;
			} else if (material.alphaMap) {
				uvScaleMap = material.alphaMap;
			}

			if (uvScaleMap !== undefined) {
				if (uvScaleMap.matrixAutoUpdate === true) {
					uvScaleMap.updateMatrix();
				}

				uniforms.uvTransform.value.copy(uvScaleMap.matrix);
			}
		}

		function refreshUniformsLambert(uniforms, material) {
			if (material.emissiveMap) {
				uniforms.emissiveMap.value = material.emissiveMap;
			}
		}

		function refreshUniformsPhong(uniforms, material) {
			uniforms.specular.value.copy(material.specular);
			uniforms.shininess.value = Math.max(material.shininess, 1e-4); // to prevent pow( 0.0, 0.0 )

			if (material.emissiveMap) {
				uniforms.emissiveMap.value = material.emissiveMap;
			}

			if (material.bumpMap) {
				uniforms.bumpMap.value = material.bumpMap;
				uniforms.bumpScale.value = material.bumpScale;
				if (material.side === BackSide) uniforms.bumpScale.value *= -1;
			}

			if (material.normalMap) {
				uniforms.normalMap.value = material.normalMap;
				uniforms.normalScale.value.copy(material.normalScale);
				if (material.side === BackSide) uniforms.normalScale.value.negate();
			}

			if (material.displacementMap) {
				uniforms.displacementMap.value = material.displacementMap;
				uniforms.displacementScale.value = material.displacementScale;
				uniforms.displacementBias.value = material.displacementBias;
			}
		}

		function refreshUniformsToon(uniforms, material) {
			if (material.gradientMap) {
				uniforms.gradientMap.value = material.gradientMap;
			}

			if (material.emissiveMap) {
				uniforms.emissiveMap.value = material.emissiveMap;
			}

			if (material.bumpMap) {
				uniforms.bumpMap.value = material.bumpMap;
				uniforms.bumpScale.value = material.bumpScale;
				if (material.side === BackSide) uniforms.bumpScale.value *= -1;
			}

			if (material.normalMap) {
				uniforms.normalMap.value = material.normalMap;
				uniforms.normalScale.value.copy(material.normalScale);
				if (material.side === BackSide) uniforms.normalScale.value.negate();
			}

			if (material.displacementMap) {
				uniforms.displacementMap.value = material.displacementMap;
				uniforms.displacementScale.value = material.displacementScale;
				uniforms.displacementBias.value = material.displacementBias;
			}
		}

		function refreshUniformsStandard(uniforms, material) {
			uniforms.roughness.value = material.roughness;
			uniforms.metalness.value = material.metalness;

			if (material.roughnessMap) {
				uniforms.roughnessMap.value = material.roughnessMap;
			}

			if (material.metalnessMap) {
				uniforms.metalnessMap.value = material.metalnessMap;
			}

			if (material.emissiveMap) {
				uniforms.emissiveMap.value = material.emissiveMap;
			}

			if (material.bumpMap) {
				uniforms.bumpMap.value = material.bumpMap;
				uniforms.bumpScale.value = material.bumpScale;
				if (material.side === BackSide) uniforms.bumpScale.value *= -1;
			}

			if (material.normalMap) {
				uniforms.normalMap.value = material.normalMap;
				uniforms.normalScale.value.copy(material.normalScale);
				if (material.side === BackSide) uniforms.normalScale.value.negate();
			}

			if (material.displacementMap) {
				uniforms.displacementMap.value = material.displacementMap;
				uniforms.displacementScale.value = material.displacementScale;
				uniforms.displacementBias.value = material.displacementBias;
			}

			const envMap = properties.get(material).envMap;

			if (envMap) {
				//uniforms.envMap.value = material.envMap; // part of uniforms common
				uniforms.envMapIntensity.value = material.envMapIntensity;
			}
		}

		function refreshUniformsPhysical(uniforms, material, transmissionRenderTarget) {
			refreshUniformsStandard(uniforms, material);
			uniforms.ior.value = material.ior; // also part of uniforms common

			if (material.sheen > 0) {
				uniforms.sheenTint.value.copy(material.sheenTint).multiplyScalar(material.sheen);
				uniforms.sheenRoughness.value = material.sheenRoughness;
			}

			if (material.clearcoat > 0) {
				uniforms.clearcoat.value = material.clearcoat;
				uniforms.clearcoatRoughness.value = material.clearcoatRoughness;

				if (material.clearcoatMap) {
					uniforms.clearcoatMap.value = material.clearcoatMap;
				}

				if (material.clearcoatRoughnessMap) {
					uniforms.clearcoatRoughnessMap.value = material.clearcoatRoughnessMap;
				}

				if (material.clearcoatNormalMap) {
					uniforms.clearcoatNormalScale.value.copy(material.clearcoatNormalScale);
					uniforms.clearcoatNormalMap.value = material.clearcoatNormalMap;

					if (material.side === BackSide) {
						uniforms.clearcoatNormalScale.value.negate();
					}
				}
			}

			if (material.transmission > 0) {
				uniforms.transmission.value = material.transmission;
				uniforms.transmissionSamplerMap.value = transmissionRenderTarget.texture;
				uniforms.transmissionSamplerSize.value.set(transmissionRenderTarget.width, transmissionRenderTarget.height);

				if (material.transmissionMap) {
					uniforms.transmissionMap.value = material.transmissionMap;
				}

				uniforms.thickness.value = material.thickness;

				if (material.thicknessMap) {
					uniforms.thicknessMap.value = material.thicknessMap;
				}

				uniforms.attenuationDistance.value = material.attenuationDistance;
				uniforms.attenuationTint.value.copy(material.attenuationTint);
			}

			uniforms.specularIntensity.value = material.specularIntensity;
			uniforms.specularTint.value.copy(material.specularTint);

			if (material.specularIntensityMap) {
				uniforms.specularIntensityMap.value = material.specularIntensityMap;
			}

			if (material.specularTintMap) {
				uniforms.specularTintMap.value = material.specularTintMap;
			}
		}

		function refreshUniformsMatcap(uniforms, material) {
			if (material.matcap) {
				uniforms.matcap.value = material.matcap;
			}

			if (material.bumpMap) {
				uniforms.bumpMap.value = material.bumpMap;
				uniforms.bumpScale.value = material.bumpScale;
				if (material.side === BackSide) uniforms.bumpScale.value *= -1;
			}

			if (material.normalMap) {
				uniforms.normalMap.value = material.normalMap;
				uniforms.normalScale.value.copy(material.normalScale);
				if (material.side === BackSide) uniforms.normalScale.value.negate();
			}

			if (material.displacementMap) {
				uniforms.displacementMap.value = material.displacementMap;
				uniforms.displacementScale.value = material.displacementScale;
				uniforms.displacementBias.value = material.displacementBias;
			}
		}

		function refreshUniformsDepth(uniforms, material) {
			if (material.displacementMap) {
				uniforms.displacementMap.value = material.displacementMap;
				uniforms.displacementScale.value = material.displacementScale;
				uniforms.displacementBias.value = material.displacementBias;
			}
		}

		function refreshUniformsDistance(uniforms, material) {
			if (material.displacementMap) {
				uniforms.displacementMap.value = material.displacementMap;
				uniforms.displacementScale.value = material.displacementScale;
				uniforms.displacementBias.value = material.displacementBias;
			}

			uniforms.referencePosition.value.copy(material.referencePosition);
			uniforms.nearDistance.value = material.nearDistance;
			uniforms.farDistance.value = material.farDistance;
		}

		function refreshUniformsNormal(uniforms, material) {
			if (material.bumpMap) {
				uniforms.bumpMap.value = material.bumpMap;
				uniforms.bumpScale.value = material.bumpScale;
				if (material.side === BackSide) uniforms.bumpScale.value *= -1;
			}

			if (material.normalMap) {
				uniforms.normalMap.value = material.normalMap;
				uniforms.normalScale.value.copy(material.normalScale);
				if (material.side === BackSide) uniforms.normalScale.value.negate();
			}

			if (material.displacementMap) {
				uniforms.displacementMap.value = material.displacementMap;
				uniforms.displacementScale.value = material.displacementScale;
				uniforms.displacementBias.value = material.displacementBias;
			}
		}

		return {
			refreshFogUniforms: refreshFogUniforms,
			refreshMaterialUniforms: refreshMaterialUniforms
		};
	}

	function createCanvasElement() {
		const canvas = createElementNS('canvas');
		canvas.style.display = 'block';
		return canvas;
	}

	function WebGLRenderer(parameters = {}) {
		const _canvas = parameters.canvas !== undefined ? parameters.canvas : createCanvasElement(),
					_context = parameters.context !== undefined ? parameters.context : null,
					_alpha = parameters.alpha !== undefined ? parameters.alpha : false,
					_depth = parameters.depth !== undefined ? parameters.depth : true,
					_stencil = parameters.stencil !== undefined ? parameters.stencil : true,
					_antialias = parameters.antialias !== undefined ? parameters.antialias : false,
					_premultipliedAlpha = parameters.premultipliedAlpha !== undefined ? parameters.premultipliedAlpha : true,
					_preserveDrawingBuffer = parameters.preserveDrawingBuffer !== undefined ? parameters.preserveDrawingBuffer : false,
					_powerPreference = parameters.powerPreference !== undefined ? parameters.powerPreference : 'default',
					_failIfMajorPerformanceCaveat = parameters.failIfMajorPerformanceCaveat !== undefined ? parameters.failIfMajorPerformanceCaveat : false;

		let currentRenderList = null;
		let currentRenderState = null; // render() can be called from within a callback triggered by another render.
		// We track this so that the nested render call gets its list and state isolated from the parent render call.

		const renderListStack = [];
		const renderStateStack = []; // public properties

		this.domElement = _canvas; // Debug configuration container

		this.debug = {
			/**
			 * Enables error checking and reporting when shader programs are being compiled
			 * @type {boolean}
			 */
			checkShaderErrors: true
		}; // clearing

		this.autoClear = true;
		this.autoClearColor = true;
		this.autoClearDepth = true;
		this.autoClearStencil = true; // scene graph

		this.sortObjects = true; // user-defined clipping

		this.clippingPlanes = [];
		this.localClippingEnabled = false; // physically based shading

		this.gammaFactor = 2.0; // for backwards compatibility

		this.outputEncoding = LinearEncoding; // physical lights

		this.physicallyCorrectLights = false; // tone mapping

		this.toneMapping = NoToneMapping;
		this.toneMappingExposure = 1.0; // internal properties

		const _this = this;

		let _isContextLost = false; // internal state cache

		let _currentActiveCubeFace = 0;
		let _currentActiveMipmapLevel = 0;
		let _currentRenderTarget = null;

		let _currentMaterialId = -1;

		let _currentCamera = null;

		const _currentViewport = new Vector4();

		const _currentScissor = new Vector4();

		let _currentScissorTest = null; //

		let _width = _canvas.width;
		let _height = _canvas.height;
		let _pixelRatio = 1;
		let _opaqueSort = null;
		let _transparentSort = null;

		const _viewport = new Vector4(0, 0, _width, _height);

		const _scissor = new Vector4(0, 0, _width, _height);

		let _scissorTest = false; //

		const _currentDrawBuffers = []; // frustum

		const _frustum = new Frustum(); // clipping


		let _clippingEnabled = false;
		let _localClippingEnabled = false; // transmission

		let _transmissionRenderTarget = null; // camera matrices cache

		const _projScreenMatrix = new Matrix4();

		const _vector3 = new Vector3();

		const _emptyScene = {
			background: null,
			fog: null,
			environment: null,
			overrideMaterial: null,
			isScene: true
		};

		function getTargetPixelRatio() {
			return _currentRenderTarget === null ? _pixelRatio : 1;
		} // initialize


		let _gl = _context;

		function getContext(contextNames, contextAttributes) {
			for (let i = 0; i < contextNames.length; i++) {
				const contextName = contextNames[i];

				const context = _canvas.getContext(contextName, contextAttributes);

				if (context !== null) return context;
			}

			return null;
		}

		try {
			const contextAttributes = {
				alpha: _alpha,
				depth: _depth,
				stencil: _stencil,
				antialias: _antialias,
				premultipliedAlpha: _premultipliedAlpha,
				preserveDrawingBuffer: _preserveDrawingBuffer,
				powerPreference: _powerPreference,
				failIfMajorPerformanceCaveat: _failIfMajorPerformanceCaveat
			}; // event listeners must be registered before WebGL context is created, see #12753

			_canvas.addEventListener('webglcontextlost', onContextLost, false);

			_canvas.addEventListener('webglcontextrestored', onContextRestore, false);

			if (_gl === null) {
				const contextNames = ['webgl2', 'webgl', 'experimental-webgl'];

				if (_this.isWebGL1Renderer === true) {
					contextNames.shift();
				}

				_gl = getContext(contextNames, contextAttributes);

				if (_gl === null) {
					if (getContext(contextNames)) {
						throw new Error('Error creating WebGL context with your selected attributes.');
					} else {
						throw new Error('Error creating WebGL context.');
					}
				}
			} // Some experimental-webgl implementations do not have getShaderPrecisionFormat


			if (_gl.getShaderPrecisionFormat === undefined) {
				_gl.getShaderPrecisionFormat = function () {
					return {
						'rangeMin': 1,
						'rangeMax': 1,
						'precision': 1
					};
				};
			}
		} catch (error) {
			console.error('THREE.WebGLRenderer: ' + error.message);
			throw error;
		}

		let extensions, capabilities, state, info;
		let properties, textures, cubemaps, cubeuvmaps, attributes, geometries, objects;
		let programCache, materials, renderLists, renderStates, clipping, shadowMap;
		let background, morphtargets, bufferRenderer, indexedBufferRenderer;
		let utils, bindingStates;

		function initGLContext() {
			extensions = new WebGLExtensions(_gl);
			capabilities = new WebGLCapabilities(_gl, extensions, parameters);
			extensions.init(capabilities);
			utils = new WebGLUtils(_gl, extensions, capabilities);
			state = new WebGLState(_gl, extensions, capabilities);
			_currentDrawBuffers[0] = _gl.BACK;
			info = new WebGLInfo(_gl);
			properties = new WebGLProperties();
			textures = new WebGLTextures(_gl, extensions, state, properties, capabilities, utils, info);
			cubemaps = new WebGLCubeMaps(_this);
			cubeuvmaps = new WebGLCubeUVMaps(_this);
			attributes = new WebGLAttributes(_gl, capabilities);
			bindingStates = new WebGLBindingStates(_gl, extensions, attributes, capabilities);
			geometries = new WebGLGeometries(_gl, attributes, info, bindingStates);
			objects = new WebGLObjects(_gl, geometries, attributes, info);
			morphtargets = new WebGLMorphtargets(_gl, capabilities, textures);
			clipping = new WebGLClipping(properties);
			programCache = new WebGLPrograms(_this, cubemaps, cubeuvmaps, extensions, capabilities, bindingStates, clipping);
			materials = new WebGLMaterials(properties);
			renderLists = new WebGLRenderLists(properties);
			renderStates = new WebGLRenderStates(extensions, capabilities);
			background = new WebGLBackground(_this, cubemaps, state, objects, _premultipliedAlpha);
			shadowMap = new WebGLShadowMap(_this, objects, capabilities);
			bufferRenderer = new WebGLBufferRenderer(_gl, extensions, info, capabilities);
			indexedBufferRenderer = new WebGLIndexedBufferRenderer(_gl, extensions, info, capabilities);
			info.programs = programCache.programs;
			_this.capabilities = capabilities;
			_this.extensions = extensions;
			_this.properties = properties;
			_this.renderLists = renderLists;
			_this.shadowMap = shadowMap;
			_this.state = state;
			_this.info = info;
		}

		initGLContext();
		const xr = typeof navigator !== 'undefined' && 'xr' in navigator ? new WebXRManager(_this, _gl) : new WebVRManager(_this);
		this.xr = xr; // API

		this.getContext = function () {
			return _gl;
		};

		this.getContextAttributes = function () {
			return _gl.getContextAttributes();
		};

		this.forceContextLoss = function () {
			const extension = extensions.get('WEBGL_lose_context');
			if (extension) extension.loseContext();
		};

		this.forceContextRestore = function () {
			const extension = extensions.get('WEBGL_lose_context');
			if (extension) extension.restoreContext();
		};

		this.getPixelRatio = function () {
			return _pixelRatio;
		};

		this.setPixelRatio = function (value) {
			if (value === undefined) return;
			_pixelRatio = value;
			this.setSize(_width, _height, false);
		};

		this.getSize = function (target) {
			return target.set(_width, _height);
		};

		this.setSize = function (width, height, updateStyle) {
			if (xr.isPresenting) {
				console.warn('THREE.WebGLRenderer: Can\'t change size while VR device is presenting.');
				return;
			}

			_width = width;
			_height = height;
			_canvas.width = Math.floor(width * _pixelRatio);
			_canvas.height = Math.floor(height * _pixelRatio);

			if (updateStyle !== false) {
				_canvas.style.width = width + 'px';
				_canvas.style.height = height + 'px';
			}

			this.setViewport(0, 0, width, height);
		};

		this.getDrawingBufferSize = function (target) {
			return target.set(_width * _pixelRatio, _height * _pixelRatio).floor();
		};

		this.setDrawingBufferSize = function (width, height, pixelRatio) {
			_width = width;
			_height = height;
			_pixelRatio = pixelRatio;
			_canvas.width = Math.floor(width * pixelRatio);
			_canvas.height = Math.floor(height * pixelRatio);
			this.setViewport(0, 0, width, height);
		};

		this.getCurrentViewport = function (target) {
			return target.copy(_currentViewport);
		};

		this.getViewport = function (target) {
			return target.copy(_viewport);
		};

		this.setViewport = function (x, y, width, height) {
			if (x.isVector4) {
				_viewport.set(x.x, x.y, x.z, x.w);
			} else {
				_viewport.set(x, y, width, height);
			}

			state.viewport(_currentViewport.copy(_viewport).multiplyScalar(_pixelRatio).floor());
		};

		this.getScissor = function (target) {
			return target.copy(_scissor);
		};

		this.setScissor = function (x, y, width, height) {
			if (x.isVector4) {
				_scissor.set(x.x, x.y, x.z, x.w);
			} else {
				_scissor.set(x, y, width, height);
			}

			state.scissor(_currentScissor.copy(_scissor).multiplyScalar(_pixelRatio).floor());
		};

		this.getScissorTest = function () {
			return _scissorTest;
		};

		this.setScissorTest = function (boolean) {
			state.setScissorTest(_scissorTest = boolean);
		};

		this.setOpaqueSort = function (method) {
			_opaqueSort = method;
		};

		this.setTransparentSort = function (method) {
			_transparentSort = method;
		}; // Clearing


		this.getClearColor = function (target) {
			return target.copy(background.getClearColor());
		};

		this.setClearColor = function () {
			background.setClearColor.apply(background, arguments);
		};

		this.getClearAlpha = function () {
			return background.getClearAlpha();
		};

		this.setClearAlpha = function () {
			background.setClearAlpha.apply(background, arguments);
		};

		this.clear = function (color, depth, stencil) {
			let bits = 0;
			if (color === undefined || color) bits |= _gl.COLOR_BUFFER_BIT;
			if (depth === undefined || depth) bits |= _gl.DEPTH_BUFFER_BIT;
			if (stencil === undefined || stencil) bits |= _gl.STENCIL_BUFFER_BIT;

			_gl.clear(bits);
		};

		this.clearColor = function () {
			this.clear(true, false, false);
		};

		this.clearDepth = function () {
			this.clear(false, true, false);
		};

		this.clearStencil = function () {
			this.clear(false, false, true);
		}; //


		this.dispose = function () {
			_canvas.removeEventListener('webglcontextlost', onContextLost, false);

			_canvas.removeEventListener('webglcontextrestored', onContextRestore, false);

			renderLists.dispose();
			renderStates.dispose();
			properties.dispose();
			cubemaps.dispose();
			cubeuvmaps.dispose();
			objects.dispose();
			bindingStates.dispose();
			xr.dispose();
			xr.removeEventListener('sessionstart', onXRSessionStart);
			xr.removeEventListener('sessionend', onXRSessionEnd);

			if (_transmissionRenderTarget) {
				_transmissionRenderTarget.dispose();

				_transmissionRenderTarget = null;
			}

			animation.stop();
		}; // Events


		function onContextLost(event) {
			event.preventDefault();
			console.log('THREE.WebGLRenderer: Context Lost.');
			_isContextLost = true;
		}

		function onContextRestore() {
			console.log('THREE.WebGLRenderer: Context Restored.');
			_isContextLost = false;
			const infoAutoReset = info.autoReset;
			const shadowMapEnabled = shadowMap.enabled;
			const shadowMapAutoUpdate = shadowMap.autoUpdate;
			const shadowMapNeedsUpdate = shadowMap.needsUpdate;
			const shadowMapType = shadowMap.type;
			initGLContext();
			info.autoReset = infoAutoReset;
			shadowMap.enabled = shadowMapEnabled;
			shadowMap.autoUpdate = shadowMapAutoUpdate;
			shadowMap.needsUpdate = shadowMapNeedsUpdate;
			shadowMap.type = shadowMapType;
		}

		function onMaterialDispose(event) {
			const material = event.target;
			material.removeEventListener('dispose', onMaterialDispose);
			deallocateMaterial(material);
		} // Buffer deallocation


		function deallocateMaterial(material) {
			releaseMaterialProgramReferences(material);
			properties.remove(material);
		}

		function releaseMaterialProgramReferences(material) {
			const programs = properties.get(material).programs;

			if (programs !== undefined) {
				programs.forEach(function (program) {
					programCache.releaseProgram(program);
				});
			}
		} // Buffer rendering


		function renderObjectImmediate(object, program) {
			object.render(function (object) {
				_this.renderBufferImmediate(object, program);
			});
		}

		this.renderBufferImmediate = function (object, program) {
			bindingStates.initAttributes();
			const buffers = properties.get(object);
			if (object.hasPositions && !buffers.position) buffers.position = _gl.createBuffer();
			if (object.hasNormals && !buffers.normal) buffers.normal = _gl.createBuffer();
			if (object.hasUvs && !buffers.uv) buffers.uv = _gl.createBuffer();
			if (object.hasColors && !buffers.color) buffers.color = _gl.createBuffer();
			const programAttributes = program.getAttributes();

			if (object.hasPositions) {
				_gl.bindBuffer(_gl.ARRAY_BUFFER, buffers.position);

				_gl.bufferData(_gl.ARRAY_BUFFER, object.positionArray, _gl.DYNAMIC_DRAW);

				bindingStates.enableAttribute(programAttributes.position.location);

				_gl.vertexAttribPointer(programAttributes.position.location, 3, _gl.FLOAT, false, 0, 0);
			}

			if (object.hasNormals) {
				_gl.bindBuffer(_gl.ARRAY_BUFFER, buffers.normal);

				_gl.bufferData(_gl.ARRAY_BUFFER, object.normalArray, _gl.DYNAMIC_DRAW);

				bindingStates.enableAttribute(programAttributes.normal.location);

				_gl.vertexAttribPointer(programAttributes.normal.location, 3, _gl.FLOAT, false, 0, 0);
			}

			if (object.hasUvs) {
				_gl.bindBuffer(_gl.ARRAY_BUFFER, buffers.uv);

				_gl.bufferData(_gl.ARRAY_BUFFER, object.uvArray, _gl.DYNAMIC_DRAW);

				bindingStates.enableAttribute(programAttributes.uv.location);

				_gl.vertexAttribPointer(programAttributes.uv.location, 2, _gl.FLOAT, false, 0, 0);
			}

			if (object.hasColors) {
				_gl.bindBuffer(_gl.ARRAY_BUFFER, buffers.color);

				_gl.bufferData(_gl.ARRAY_BUFFER, object.colorArray, _gl.DYNAMIC_DRAW);

				bindingStates.enableAttribute(programAttributes.color.location);

				_gl.vertexAttribPointer(programAttributes.color.location, 3, _gl.FLOAT, false, 0, 0);
			}

			bindingStates.disableUnusedAttributes();

			_gl.drawArrays(_gl.TRIANGLES, 0, object.count);

			object.count = 0;
		};

		this.renderBufferDirect = function (camera, scene, geometry, material, object, group) {
			if (scene === null) scene = _emptyScene; // renderBufferDirect second parameter used to be fog (could be null)

			const frontFaceCW = object.isMesh && object.matrixWorld.determinant() < 0;
			const program = setProgram(camera, scene, geometry, material, object);
			state.setMaterial(material, frontFaceCW); //

			let index = geometry.index;
			const position = geometry.attributes.position; //

			if (index === null) {
				if (position === undefined || position.count === 0) return;
			} else if (index.count === 0) {
				return;
			} //


			let rangeFactor = 1;

			if (material.wireframe === true) {
				index = geometries.getWireframeAttribute(geometry);
				rangeFactor = 2;
			}

			bindingStates.setup(object, material, program, geometry, index);
			let attribute;
			let renderer = bufferRenderer;

			if (index !== null) {
				attribute = attributes.get(index);
				renderer = indexedBufferRenderer;
				renderer.setIndex(attribute);
			} //


			const dataCount = index !== null ? index.count : position.count;
			const rangeStart = geometry.drawRange.start * rangeFactor;
			const rangeCount = geometry.drawRange.count * rangeFactor;
			const groupStart = group !== null ? group.start * rangeFactor : 0;
			const groupCount = group !== null ? group.count * rangeFactor : Infinity;
			const drawStart = Math.max(rangeStart, groupStart);
			const drawEnd = Math.min(dataCount, rangeStart + rangeCount, groupStart + groupCount) - 1;
			const drawCount = Math.max(0, drawEnd - drawStart + 1);
			if (drawCount === 0) return; //

			if (object.isMesh) {
				if (material.wireframe === true) {
					state.setLineWidth(material.wireframeLinewidth * getTargetPixelRatio());
					renderer.setMode(_gl.LINES);
				} else {
					renderer.setMode(_gl.TRIANGLES);
				}
			} else if (object.isLine) {
				let lineWidth = material.linewidth;
				if (lineWidth === undefined) lineWidth = 1; // Not using Line*Material

				state.setLineWidth(lineWidth * getTargetPixelRatio());

				if (object.isLineSegments) {
					renderer.setMode(_gl.LINES);
				} else if (object.isLineLoop) {
					renderer.setMode(_gl.LINE_LOOP);
				} else {
					renderer.setMode(_gl.LINE_STRIP);
				}
			} else if (object.isPoints) {
				renderer.setMode(_gl.POINTS);
			} else if (object.isSprite) {
				renderer.setMode(_gl.TRIANGLES);
			}

			if (object.isInstancedMesh) {
				renderer.renderInstances(drawStart, drawCount, object.count);
			} else if (geometry.isInstancedBufferGeometry) {
				const instanceCount = Math.min(geometry.instanceCount, geometry._maxInstanceCount);
				renderer.renderInstances(drawStart, drawCount, instanceCount);
			} else {
				renderer.render(drawStart, drawCount);
			}
		}; // Compile


		this.compile = function (scene, camera) {
			currentRenderState = renderStates.get(scene);
			currentRenderState.init();
			renderStateStack.push(currentRenderState);
			scene.traverseVisible(function (object) {
				if (object.isLight && object.layers.test(camera.layers)) {
					currentRenderState.pushLight(object);

					if (object.castShadow) {
						currentRenderState.pushShadow(object);
					}
				}
			});
			currentRenderState.setupLights(_this.physicallyCorrectLights);
			scene.traverse(function (object) {
				const material = object.material;

				if (material) {
					if (Array.isArray(material)) {
						for (let i = 0; i < material.length; i++) {
							const material2 = material[i];
							getProgram(material2, scene, object);
						}
					} else {
						getProgram(material, scene, object);
					}
				}
			});
			renderStateStack.pop();
			currentRenderState = null;
		}; // Animation Loop


		let onAnimationFrameCallback = null;

		function onAnimationFrame(time) {
			if (onAnimationFrameCallback) onAnimationFrameCallback(time);
		}

		function onXRSessionStart() {
			animation.stop();
		}

		function onXRSessionEnd() {
			animation.start();
		}

		const animation = new WebGLAnimation();
		animation.setAnimationLoop(onAnimationFrame);
		if (typeof window !== 'undefined') animation.setContext(window);

		this.setAnimationLoop = function (callback) {
			onAnimationFrameCallback = callback;
			xr.setAnimationLoop(callback);
			callback === null ? animation.stop() : animation.start();
		};

		xr.addEventListener('sessionstart', onXRSessionStart);
		xr.addEventListener('sessionend', onXRSessionEnd); // Rendering

		this.render = function (scene, camera) {
			if (camera !== undefined && camera.isCamera !== true) {
				console.error('THREE.WebGLRenderer.render: camera is not an instance of THREE.Camera.');
				return;
			}

			if (_isContextLost === true) return; // update scene graph

			if (scene.autoUpdate === true) scene.updateMatrixWorld(); // update camera matrices and frustum

			if (camera.parent === null) camera.updateMatrixWorld();

			if (xr.enabled === true && xr.isPresenting === true) {
				if (xr.cameraAutoUpdate === true) xr.updateCamera(camera);
				camera = xr.getCamera(); // use XR camera for rendering
			} //


			if (scene.isScene === true) scene.onBeforeRender(_this, scene, camera, _currentRenderTarget);
			currentRenderState = renderStates.get(scene, renderStateStack.length);
			currentRenderState.init();
			renderStateStack.push(currentRenderState);

			_projScreenMatrix.multiplyMatrices(camera.projectionMatrix, camera.matrixWorldInverse);

			_frustum.setFromProjectionMatrix(_projScreenMatrix);

			_localClippingEnabled = this.localClippingEnabled;
			_clippingEnabled = clipping.init(this.clippingPlanes, _localClippingEnabled, camera);
			currentRenderList = renderLists.get(scene, renderListStack.length);
			currentRenderList.init();
			renderListStack.push(currentRenderList);
			projectObject(scene, camera, 0, _this.sortObjects);
			currentRenderList.finish();

			if (_this.sortObjects === true) {
				currentRenderList.sort(_opaqueSort, _transparentSort);
			} //


			if (_clippingEnabled === true) clipping.beginShadows();
			const shadowsArray = currentRenderState.state.shadowsArray;
			shadowMap.render(shadowsArray, scene, camera);
			if (_clippingEnabled === true) clipping.endShadows(); //

			if (this.info.autoReset === true) this.info.reset(); //

			background.render(currentRenderList, scene); // render scene

			currentRenderState.setupLights(_this.physicallyCorrectLights);

			if (camera.isArrayCamera) {
				const cameras = camera.cameras;

				for (let i = 0, l = cameras.length; i < l; i++) {
					const camera2 = cameras[i];
					renderScene(currentRenderList, scene, camera2, camera2.viewport);
				}
			} else {
				renderScene(currentRenderList, scene, camera);
			} //


			if (_currentRenderTarget !== null) {
				// resolve multisample renderbuffers to a single-sample texture if necessary
				textures.updateMultisampleRenderTarget(_currentRenderTarget); // Generate mipmap if we're using any kind of mipmap filtering

				textures.updateRenderTargetMipmap(_currentRenderTarget);
			} //


			if (scene.isScene === true) scene.onAfterRender(_this, scene, camera); // Ensure depth buffer writing is enabled so it can be cleared on next render

			state.buffers.depth.setTest(true);
			state.buffers.depth.setMask(true);
			state.buffers.color.setMask(true);
			state.setPolygonOffset(false);

			if (xr.enabled && xr.submitFrame) {
				xr.submitFrame();
			} // _gl.finish();


			bindingStates.resetDefaultState();
			_currentMaterialId = -1;
			_currentCamera = null;
			renderStateStack.pop();

			if (renderStateStack.length > 0) {
				currentRenderState = renderStateStack[renderStateStack.length - 1];
			} else {
				currentRenderState = null;
			}

			renderListStack.pop();

			if (renderListStack.length > 0) {
				currentRenderList = renderListStack[renderListStack.length - 1];
			} else {
				currentRenderList = null;
			}
		};

		function projectObject(object, camera, groupOrder, sortObjects) {
			if (object.visible === false) return;
			const visible = object.layers.test(camera.layers);

			if (visible) {
				if (object.isGroup) {
					groupOrder = object.renderOrder;
				} else if (object.isLOD) {
					if (object.autoUpdate === true) object.update(camera);
				} else if (object.isLight) {
					currentRenderState.pushLight(object);

					if (object.castShadow) {
						currentRenderState.pushShadow(object);
					}
				} else if (object.isSprite) {
					if (!object.frustumCulled || _frustum.intersectsSprite(object)) {
						if (sortObjects) {
							_vector3.setFromMatrixPosition(object.matrixWorld).applyMatrix4(_projScreenMatrix);
						}

						const geometry = objects.update(object);
						const material = object.material;

						if (material.visible) {
							currentRenderList.push(object, geometry, material, groupOrder, _vector3.z, null);
						}
					}
				} else if (object.isImmediateRenderObject) {
					if (sortObjects) {
						_vector3.setFromMatrixPosition(object.matrixWorld).applyMatrix4(_projScreenMatrix);
					}

					currentRenderList.push(object, null, object.material, groupOrder, _vector3.z, null);
				} else if (object.isMesh || object.isLine || object.isPoints) {
					if (object.isSkinnedMesh) {
						// update skeleton only once in a frame
						if (object.skeleton.frame !== info.render.frame) {
							object.skeleton.update();
							object.skeleton.frame = info.render.frame;
						}
					}

					if (!object.frustumCulled || _frustum.intersectsObject(object)) {
						if (sortObjects) {
							_vector3.setFromMatrixPosition(object.matrixWorld).applyMatrix4(_projScreenMatrix);
						}

						const geometry = objects.update(object);
						const material = object.material;

						if (Array.isArray(material)) {
							const groups = geometry.groups;

							for (let i = 0, l = groups.length; i < l; i++) {
								const group = groups[i];
								const groupMaterial = material[group.materialIndex];

								if (groupMaterial && groupMaterial.visible) {
									currentRenderList.push(object, geometry, groupMaterial, groupOrder, _vector3.z, group);
								}
							}
						} else if (material.visible) {
							currentRenderList.push(object, geometry, material, groupOrder, _vector3.z, null);
						}
					}
				}
			}

			const children = object.children;

			for (let i = 0, l = children.length; i < l; i++) {
				projectObject(children[i], camera, groupOrder, sortObjects);
			}
		}

		function renderScene(currentRenderList, scene, camera, viewport) {
			const opaqueObjects = currentRenderList.opaque;
			const transmissiveObjects = currentRenderList.transmissive;
			const transparentObjects = currentRenderList.transparent;
			currentRenderState.setupLightsView(camera);
			if (transmissiveObjects.length > 0) renderTransmissionPass(opaqueObjects, scene, camera);
			if (viewport) state.viewport(_currentViewport.copy(viewport));
			if (opaqueObjects.length > 0) renderObjects(opaqueObjects, scene, camera);
			if (transmissiveObjects.length > 0) renderObjects(transmissiveObjects, scene, camera);
			if (transparentObjects.length > 0) renderObjects(transparentObjects, scene, camera);
		}

		function renderTransmissionPass(opaqueObjects, scene, camera) {
			if (_transmissionRenderTarget === null) {
				const needsAntialias = _antialias === true && capabilities.isWebGL2 === true;
				const renderTargetType = needsAntialias ? WebGLMultisampleRenderTarget : WebGLRenderTarget;
				_transmissionRenderTarget = new renderTargetType(1024, 1024, {
					generateMipmaps: true,
					type: utils.convert(HalfFloatType) !== null ? HalfFloatType : UnsignedByteType,
					minFilter: LinearMipmapLinearFilter,
					magFilter: NearestFilter,
					wrapS: ClampToEdgeWrapping,
					wrapT: ClampToEdgeWrapping
				});
			}

			const currentRenderTarget = _this.getRenderTarget();

			_this.setRenderTarget(_transmissionRenderTarget);

			_this.clear(); // Turn off the features which can affect the frag color for opaque objects pass.
			// Otherwise they are applied twice in opaque objects pass and transmission objects pass.


			const currentToneMapping = _this.toneMapping;
			_this.toneMapping = NoToneMapping;
			renderObjects(opaqueObjects, scene, camera);
			_this.toneMapping = currentToneMapping;
			textures.updateMultisampleRenderTarget(_transmissionRenderTarget);
			textures.updateRenderTargetMipmap(_transmissionRenderTarget);

			_this.setRenderTarget(currentRenderTarget);
		}

		function renderObjects(renderList, scene, camera) {
			const overrideMaterial = scene.isScene === true ? scene.overrideMaterial : null;

			for (let i = 0, l = renderList.length; i < l; i++) {
				const renderItem = renderList[i];
				const object = renderItem.object;
				const geometry = renderItem.geometry;
				const material = overrideMaterial === null ? renderItem.material : overrideMaterial;
				const group = renderItem.group;

				if (object.layers.test(camera.layers)) {
					renderObject(object, scene, camera, geometry, material, group);
				}
			}
		}

		function renderObject(object, scene, camera, geometry, material, group) {
			object.onBeforeRender(_this, scene, camera, geometry, material, group);
			object.modelViewMatrix.multiplyMatrices(camera.matrixWorldInverse, object.matrixWorld);
			object.normalMatrix.getNormalMatrix(object.modelViewMatrix);
			material.onBeforeRender(_this, scene, camera, geometry, object, group);

			if (object.isImmediateRenderObject) {
				const program = setProgram(camera, scene, geometry, material, object);
				state.setMaterial(material);
				bindingStates.reset();
				renderObjectImmediate(object, program);
			} else {
				if (material.transparent === true && material.side === DoubleSide) {
					material.side = BackSide;
					material.needsUpdate = true;

					_this.renderBufferDirect(camera, scene, geometry, material, object, group);

					material.side = FrontSide;
					material.needsUpdate = true;

					_this.renderBufferDirect(camera, scene, geometry, material, object, group);

					material.side = DoubleSide;
				} else {
					_this.renderBufferDirect(camera, scene, geometry, material, object, group);
				}
			}

			object.onAfterRender(_this, scene, camera, geometry, material, group);
		}

		function getProgram(material, scene, object) {
			if (scene.isScene !== true) scene = _emptyScene; // scene could be a Mesh, Line, Points, ...

			const materialProperties = properties.get(material);
			const lights = currentRenderState.state.lights;
			const shadowsArray = currentRenderState.state.shadowsArray;
			const lightsStateVersion = lights.state.version;
			const parameters = programCache.getParameters(material, lights.state, shadowsArray, scene, object);
			const programCacheKey = programCache.getProgramCacheKey(parameters);
			let programs = materialProperties.programs; // always update environment and fog - changing these trigger an getProgram call, but it's possible that the program doesn't change

			materialProperties.environment = material.isMeshStandardMaterial ? scene.environment : null;
			materialProperties.fog = scene.fog;
			materialProperties.envMap = (material.isMeshStandardMaterial ? cubeuvmaps : cubemaps).get(material.envMap || materialProperties.environment);

			if (programs === undefined) {
				// new material
				material.addEventListener('dispose', onMaterialDispose);
				programs = new Map();
				materialProperties.programs = programs;
			}

			let program = programs.get(programCacheKey);

			if (program !== undefined) {
				// early out if program and light state is identical
				if (materialProperties.currentProgram === program && materialProperties.lightsStateVersion === lightsStateVersion) {
					updateCommonMaterialProperties(material, parameters);
					return program;
				}
			} else {
				parameters.uniforms = programCache.getUniforms(material);
				material.onBuild(parameters, _this);
				material.onBeforeCompile(parameters, _this);
				program = programCache.acquireProgram(parameters, programCacheKey);
				programs.set(programCacheKey, program);
				materialProperties.uniforms = parameters.uniforms;
			}

			const uniforms = materialProperties.uniforms;

			if (!material.isShaderMaterial && !material.isRawShaderMaterial || material.clipping === true) {
				uniforms.clippingPlanes = clipping.uniform;
			}

			updateCommonMaterialProperties(material, parameters); // store the light setup it was created for

			materialProperties.needsLights = materialNeedsLights(material);
			materialProperties.lightsStateVersion = lightsStateVersion;

			if (materialProperties.needsLights) {
				// wire up the material to this renderer's lighting state
				uniforms.ambientLightColor.value = lights.state.ambient;
				uniforms.lightProbe.value = lights.state.probe;
				uniforms.directionalLights.value = lights.state.directional;
				uniforms.directionalLightShadows.value = lights.state.directionalShadow;
				uniforms.spotLights.value = lights.state.spot;
				uniforms.spotLightShadows.value = lights.state.spotShadow;
				uniforms.rectAreaLights.value = lights.state.rectArea;
				uniforms.ltc_1.value = lights.state.rectAreaLTC1;
				uniforms.ltc_2.value = lights.state.rectAreaLTC2;
				uniforms.pointLights.value = lights.state.point;
				uniforms.pointLightShadows.value = lights.state.pointShadow;
				uniforms.hemisphereLights.value = lights.state.hemi;
				uniforms.directionalShadowMap.value = lights.state.directionalShadowMap;
				uniforms.directionalShadowMatrix.value = lights.state.directionalShadowMatrix;
				uniforms.spotShadowMap.value = lights.state.spotShadowMap;
				uniforms.spotShadowMatrix.value = lights.state.spotShadowMatrix;
				uniforms.pointShadowMap.value = lights.state.pointShadowMap;
				uniforms.pointShadowMatrix.value = lights.state.pointShadowMatrix; // TODO (abelnation): add area lights shadow info to uniforms
			}

			const progUniforms = program.getUniforms();
			const uniformsList = WebGLUniforms.seqWithValue(progUniforms.seq, uniforms);
			materialProperties.currentProgram = program;
			materialProperties.uniformsList = uniformsList;
			return program;
		}

		function updateCommonMaterialProperties(material, parameters) {
			const materialProperties = properties.get(material);
			materialProperties.outputEncoding = parameters.outputEncoding;
			materialProperties.instancing = parameters.instancing;
			materialProperties.skinning = parameters.skinning;
			materialProperties.morphTargets = parameters.morphTargets;
			materialProperties.morphNormals = parameters.morphNormals;
			materialProperties.morphTargetsCount = parameters.morphTargetsCount;
			materialProperties.numClippingPlanes = parameters.numClippingPlanes;
			materialProperties.numIntersection = parameters.numClipIntersection;
			materialProperties.vertexAlphas = parameters.vertexAlphas;
			materialProperties.vertexTangents = parameters.vertexTangents;
		}

		function setProgram(camera, scene, geometry, material, object) {
			if (scene.isScene !== true) scene = _emptyScene; // scene could be a Mesh, Line, Points, ...

			textures.resetTextureUnits();
			const fog = scene.fog;
			const environment = material.isMeshStandardMaterial ? scene.environment : null;
			const encoding = _currentRenderTarget === null ? _this.outputEncoding : _currentRenderTarget.texture.encoding;
			const envMap = (material.isMeshStandardMaterial ? cubeuvmaps : cubemaps).get(material.envMap || environment);
			const vertexAlphas = material.vertexColors === true && !!geometry && !!geometry.attributes.color && geometry.attributes.color.itemSize === 4;
			const vertexTangents = !!material.normalMap && !!geometry && !!geometry.attributes.tangent;
			const morphTargets = !!geometry && !!geometry.morphAttributes.position;
			const morphNormals = !!geometry && !!geometry.morphAttributes.normal;
			const morphTargetsCount = !!geometry && !!geometry.morphAttributes.position ? geometry.morphAttributes.position.length : 0;
			const materialProperties = properties.get(material);
			const lights = currentRenderState.state.lights;

			if (_clippingEnabled === true) {
				if (_localClippingEnabled === true || camera !== _currentCamera) {
					const useCache = camera === _currentCamera && material.id === _currentMaterialId; // we might want to call this function with some ClippingGroup
					// object instead of the material, once it becomes feasible
					// (#8465, #8379)

					clipping.setState(material, camera, useCache);
				}
			} //


			let needsProgramChange = false;

			if (material.version === materialProperties.__version) {
				if (materialProperties.needsLights && materialProperties.lightsStateVersion !== lights.state.version) {
					needsProgramChange = true;
				} else if (materialProperties.outputEncoding !== encoding) {
					needsProgramChange = true;
				} else if (object.isInstancedMesh && materialProperties.instancing === false) {
					needsProgramChange = true;
				} else if (!object.isInstancedMesh && materialProperties.instancing === true) {
					needsProgramChange = true;
				} else if (object.isSkinnedMesh && materialProperties.skinning === false) {
					needsProgramChange = true;
				} else if (!object.isSkinnedMesh && materialProperties.skinning === true) {
					needsProgramChange = true;
				} else if (materialProperties.envMap !== envMap) {
					needsProgramChange = true;
				} else if (material.fog && materialProperties.fog !== fog) {
					needsProgramChange = true;
				} else if (materialProperties.numClippingPlanes !== undefined && (materialProperties.numClippingPlanes !== clipping.numPlanes || materialProperties.numIntersection !== clipping.numIntersection)) {
					needsProgramChange = true;
				} else if (materialProperties.vertexAlphas !== vertexAlphas) {
					needsProgramChange = true;
				} else if (materialProperties.vertexTangents !== vertexTangents) {
					needsProgramChange = true;
				} else if (materialProperties.morphTargets !== morphTargets) {
					needsProgramChange = true;
				} else if (materialProperties.morphNormals !== morphNormals) {
					needsProgramChange = true;
				} else if (capabilities.isWebGL2 === true && materialProperties.morphTargetsCount !== morphTargetsCount) {
					needsProgramChange = true;
				}
			} else {
				needsProgramChange = true;
				materialProperties.__version = material.version;
			} //


			let program = materialProperties.currentProgram;

			if (needsProgramChange === true) {
				program = getProgram(material, scene, object);
			}

			let refreshProgram = false;
			let refreshMaterial = false;
			let refreshLights = false;
			const p_uniforms = program.getUniforms(),
						m_uniforms = materialProperties.uniforms;

			if (state.useProgram(program.program)) {
				refreshProgram = true;
				refreshMaterial = true;
				refreshLights = true;
			}

			if (material.id !== _currentMaterialId) {
				_currentMaterialId = material.id;
				refreshMaterial = true;
			}

			if (refreshProgram || _currentCamera !== camera) {
				p_uniforms.setValue(_gl, 'projectionMatrix', camera.projectionMatrix);

				if (capabilities.logarithmicDepthBuffer) {
					p_uniforms.setValue(_gl, 'logDepthBufFC', 2.0 / (Math.log(camera.far + 1.0) / Math.LN2));
				}

				if (_currentCamera !== camera) {
					_currentCamera = camera; // lighting uniforms depend on the camera so enforce an update
					// now, in case this material supports lights - or later, when
					// the next material that does gets activated:

					refreshMaterial = true; // set to true on material change

					refreshLights = true; // remains set until update done
				} // load material specific uniforms
				// (shader material also gets them for the sake of genericity)


				if (material.isShaderMaterial || material.isMeshPhongMaterial || material.isMeshToonMaterial || material.isMeshStandardMaterial || material.envMap) {
					const uCamPos = p_uniforms.map.cameraPosition;

					if (uCamPos !== undefined) {
						uCamPos.setValue(_gl, _vector3.setFromMatrixPosition(camera.matrixWorld));
					}
				}

				if (material.isMeshPhongMaterial || material.isMeshToonMaterial || material.isMeshLambertMaterial || material.isMeshBasicMaterial || material.isMeshStandardMaterial || material.isShaderMaterial) {
					p_uniforms.setValue(_gl, 'isOrthographic', camera.isOrthographicCamera === true);
				}

				if (material.isMeshPhongMaterial || material.isMeshToonMaterial || material.isMeshLambertMaterial || material.isMeshBasicMaterial || material.isMeshStandardMaterial || material.isShaderMaterial || material.isShadowMaterial || object.isSkinnedMesh) {
					p_uniforms.setValue(_gl, 'viewMatrix', camera.matrixWorldInverse);
				}
			} // skinning and morph target uniforms must be set even if material didn't change
			// auto-setting of texture unit for bone and morph texture must go before other textures
			// otherwise textures used for skinning and morphing can take over texture units reserved for other material textures


			if (object.isSkinnedMesh) {
				p_uniforms.setOptional(_gl, object, 'bindMatrix');
				p_uniforms.setOptional(_gl, object, 'bindMatrixInverse');
				const skeleton = object.skeleton;

				if (skeleton) {
					if (capabilities.floatVertexTextures) {
						if (skeleton.boneTexture === null) skeleton.computeBoneTexture();
						p_uniforms.setValue(_gl, 'boneTexture', skeleton.boneTexture, textures);
						p_uniforms.setValue(_gl, 'boneTextureSize', skeleton.boneTextureSize);
					} else {
						p_uniforms.setOptional(_gl, skeleton, 'boneMatrices');
					}
				}
			}

			if (!!geometry && (geometry.morphAttributes.position !== undefined || geometry.morphAttributes.normal !== undefined)) {
				morphtargets.update(object, geometry, material, program);
			}

			if (refreshMaterial || materialProperties.receiveShadow !== object.receiveShadow) {
				materialProperties.receiveShadow = object.receiveShadow;
				p_uniforms.setValue(_gl, 'receiveShadow', object.receiveShadow);
			}

			if (refreshMaterial) {
				p_uniforms.setValue(_gl, 'toneMappingExposure', _this.toneMappingExposure);

				if (materialProperties.needsLights) {
					// the current material requires lighting info
					// note: all lighting uniforms are always set correctly
					// they simply reference the renderer's state for their
					// values
					//
					// use the current material's .needsUpdate flags to set
					// the GL state when required
					markUniformsLightsNeedsUpdate(m_uniforms, refreshLights);
				} // refresh uniforms common to several materials


				if (fog && material.fog) {
					materials.refreshFogUniforms(m_uniforms, fog);
				}

				materials.refreshMaterialUniforms(m_uniforms, material, _pixelRatio, _height, _transmissionRenderTarget);
				WebGLUniforms.upload(_gl, materialProperties.uniformsList, m_uniforms, textures);
			}

			if (material.isShaderMaterial && material.uniformsNeedUpdate === true) {
				WebGLUniforms.upload(_gl, materialProperties.uniformsList, m_uniforms, textures);
				material.uniformsNeedUpdate = false;
			}

			if (material.isSpriteMaterial) {
				p_uniforms.setValue(_gl, 'center', object.center);
			} // common matrices


			p_uniforms.setValue(_gl, 'modelViewMatrix', object.modelViewMatrix);
			p_uniforms.setValue(_gl, 'normalMatrix', object.normalMatrix);
			p_uniforms.setValue(_gl, 'modelMatrix', object.matrixWorld);
			return program;
		} // If uniforms are marked as clean, they don't need to be loaded to the GPU.


		function markUniformsLightsNeedsUpdate(uniforms, value) {
			uniforms.ambientLightColor.needsUpdate = value;
			uniforms.lightProbe.needsUpdate = value;
			uniforms.directionalLights.needsUpdate = value;
			uniforms.directionalLightShadows.needsUpdate = value;
			uniforms.pointLights.needsUpdate = value;
			uniforms.pointLightShadows.needsUpdate = value;
			uniforms.spotLights.needsUpdate = value;
			uniforms.spotLightShadows.needsUpdate = value;
			uniforms.rectAreaLights.needsUpdate = value;
			uniforms.hemisphereLights.needsUpdate = value;
		}

		function materialNeedsLights(material) {
			return material.isMeshLambertMaterial || material.isMeshToonMaterial || material.isMeshPhongMaterial || material.isMeshStandardMaterial || material.isShadowMaterial || material.isShaderMaterial && material.lights === true;
		}

		this.setTexture2D = function () {
			var warned = false; // backwards compatibility: peel texture.texture

			return function setTexture2D(texture, slot) {
				if (texture && texture.isWebGLRenderTarget) {
					if (!warned) {
						console.warn("THREE.WebGLRenderer.setTexture2D: don't use render targets as textures. Use their .texture property instead.");
						warned = true;
					}

					texture = texture.texture;
				}

				textures.setTexture2D(texture, slot);
			};
		}();

		this.getActiveCubeFace = function () {
			return _currentActiveCubeFace;
		};

		this.getActiveMipmapLevel = function () {
			return _currentActiveMipmapLevel;
		};

		this.getRenderTarget = function () {
			return _currentRenderTarget;
		};

		this.setRenderTarget = function (renderTarget, activeCubeFace = 0, activeMipmapLevel = 0) {
			_currentRenderTarget = renderTarget;
			_currentActiveCubeFace = activeCubeFace;
			_currentActiveMipmapLevel = activeMipmapLevel;

			if (renderTarget && properties.get(renderTarget).__webglFramebuffer === undefined) {
				textures.setupRenderTarget(renderTarget);
			}

			let framebuffer = null;
			let isCube = false;
			let isRenderTarget3D = false;

			if (renderTarget) {
				const texture = renderTarget.texture;

				if (texture.isDataTexture3D || texture.isDataTexture2DArray) {
					isRenderTarget3D = true;
				}

				const __webglFramebuffer = properties.get(renderTarget).__webglFramebuffer;

				if (renderTarget.isWebGLCubeRenderTarget) {
					framebuffer = __webglFramebuffer[activeCubeFace];
					isCube = true;
				} else if (renderTarget.isWebGLMultisampleRenderTarget) {
					framebuffer = properties.get(renderTarget).__webglMultisampledFramebuffer;
				} else {
					framebuffer = __webglFramebuffer;
				}

				_currentViewport.copy(renderTarget.viewport);

				_currentScissor.copy(renderTarget.scissor);

				_currentScissorTest = renderTarget.scissorTest;
			} else {
				_currentViewport.copy(_viewport).multiplyScalar(_pixelRatio).floor();

				_currentScissor.copy(_scissor).multiplyScalar(_pixelRatio).floor();

				_currentScissorTest = _scissorTest;
			}

			const framebufferBound = state.bindFramebuffer(_gl.FRAMEBUFFER, framebuffer);

			if (framebufferBound && capabilities.drawBuffers) {
				let needsUpdate = false;

				if (renderTarget) {
					if (renderTarget.isWebGLMultipleRenderTargets) {
						const textures = renderTarget.texture;

						if (_currentDrawBuffers.length !== textures.length || _currentDrawBuffers[0] !== _gl.COLOR_ATTACHMENT0) {
							for (let i = 0, il = textures.length; i < il; i++) {
								_currentDrawBuffers[i] = _gl.COLOR_ATTACHMENT0 + i;
							}

							_currentDrawBuffers.length = textures.length;
							needsUpdate = true;
						}
					} else {
						if (_currentDrawBuffers.length !== 1 || _currentDrawBuffers[0] !== _gl.COLOR_ATTACHMENT0) {
							_currentDrawBuffers[0] = _gl.COLOR_ATTACHMENT0;
							_currentDrawBuffers.length = 1;
							needsUpdate = true;
						}
					}
				} else {
					if (_currentDrawBuffers.length !== 1 || _currentDrawBuffers[0] !== _gl.BACK) {
						_currentDrawBuffers[0] = _gl.BACK;
						_currentDrawBuffers.length = 1;
						needsUpdate = true;
					}
				}

				if (needsUpdate) {
					if (capabilities.isWebGL2) {
						_gl.drawBuffers(_currentDrawBuffers);
					} else {
						extensions.get('WEBGL_draw_buffers').drawBuffersWEBGL(_currentDrawBuffers);
					}
				}
			}

			state.viewport(_currentViewport);
			state.scissor(_currentScissor);
			state.setScissorTest(_currentScissorTest);

			if (isCube) {
				const textureProperties = properties.get(renderTarget.texture);

				_gl.framebufferTexture2D(_gl.FRAMEBUFFER, _gl.COLOR_ATTACHMENT0, _gl.TEXTURE_CUBE_MAP_POSITIVE_X + activeCubeFace, textureProperties.__webglTexture, activeMipmapLevel);
			} else if (isRenderTarget3D) {
				const textureProperties = properties.get(renderTarget.texture);
				const layer = activeCubeFace || 0;

				_gl.framebufferTextureLayer(_gl.FRAMEBUFFER, _gl.COLOR_ATTACHMENT0, textureProperties.__webglTexture, activeMipmapLevel || 0, layer);
			}

			_currentMaterialId = -1; // reset current material to ensure correct uniform bindings
		};

		this.readRenderTargetPixels = function (renderTarget, x, y, width, height, buffer, activeCubeFaceIndex) {
			if (!(renderTarget && renderTarget.isWebGLRenderTarget)) {
				console.error('THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not THREE.WebGLRenderTarget.');
				return;
			}

			let framebuffer = properties.get(renderTarget).__webglFramebuffer;

			if (renderTarget.isWebGLCubeRenderTarget && activeCubeFaceIndex !== undefined) {
				framebuffer = framebuffer[activeCubeFaceIndex];
			}

			if (framebuffer) {
				state.bindFramebuffer(_gl.FRAMEBUFFER, framebuffer);

				try {
					const texture = renderTarget.texture;
					const textureFormat = texture.format;
					const textureType = texture.type;

					if (textureFormat !== RGBAFormat && utils.convert(textureFormat) !== _gl.getParameter(_gl.IMPLEMENTATION_COLOR_READ_FORMAT)) {
						console.error('THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not in RGBA or implementation defined format.');
						return;
					}

					const halfFloatSupportedByExt = textureType === HalfFloatType && (extensions.has('EXT_color_buffer_half_float') || capabilities.isWebGL2 && extensions.has('EXT_color_buffer_float'));

					if (textureType !== UnsignedByteType && utils.convert(textureType) !== _gl.getParameter(_gl.IMPLEMENTATION_COLOR_READ_TYPE) && // Edge and Chrome Mac < 52 (#9513)
					!(textureType === FloatType && (capabilities.isWebGL2 || extensions.has('OES_texture_float') || extensions.has('WEBGL_color_buffer_float'))) && // Chrome Mac >= 52 and Firefox
					!halfFloatSupportedByExt) {
						console.error('THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not in UnsignedByteType or implementation defined type.');
						return;
					}

					if (_gl.checkFramebufferStatus(_gl.FRAMEBUFFER) === _gl.FRAMEBUFFER_COMPLETE) {
						// the following if statement ensures valid read requests (no out-of-bounds pixels, see #8604)
						if (x >= 0 && x <= renderTarget.width - width && y >= 0 && y <= renderTarget.height - height) {
							_gl.readPixels(x, y, width, height, utils.convert(textureFormat), utils.convert(textureType), buffer);
						}
					} else {
						console.error('THREE.WebGLRenderer.readRenderTargetPixels: readPixels from renderTarget failed. Framebuffer not complete.');
					}
				} finally {
					// restore framebuffer of current render target if necessary
					const framebuffer = _currentRenderTarget !== null ? properties.get(_currentRenderTarget).__webglFramebuffer : null;
					state.bindFramebuffer(_gl.FRAMEBUFFER, framebuffer);
				}
			}
		};

		this.copyFramebufferToTexture = function (position, texture, level = 0) {
			const levelScale = Math.pow(2, -level);
			const width = Math.floor(texture.image.width * levelScale);
			const height = Math.floor(texture.image.height * levelScale);
			let glFormat = utils.convert(texture.format);

			if (capabilities.isWebGL2) {
				// Workaround for https://bugs.chromium.org/p/chromium/issues/detail?id=1120100
				// Not needed in Chrome 93+
				if (glFormat === _gl.RGB) glFormat = _gl.RGB8;
				if (glFormat === _gl.RGBA) glFormat = _gl.RGBA8;
			}

			textures.setTexture2D(texture, 0);

			_gl.copyTexImage2D(_gl.TEXTURE_2D, level, glFormat, position.x, position.y, width, height, 0);

			state.unbindTexture();
		};

		this.copyTextureToTexture = function (position, srcTexture, dstTexture, level = 0) {
			const width = srcTexture.image.width;
			const height = srcTexture.image.height;
			const glFormat = utils.convert(dstTexture.format);
			const glType = utils.convert(dstTexture.type);
			textures.setTexture2D(dstTexture, 0); // As another texture upload may have changed pixelStorei
			// parameters, make sure they are correct for the dstTexture

			_gl.pixelStorei(_gl.UNPACK_FLIP_Y_WEBGL, dstTexture.flipY);

			_gl.pixelStorei(_gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, dstTexture.premultiplyAlpha);

			_gl.pixelStorei(_gl.UNPACK_ALIGNMENT, dstTexture.unpackAlignment);

			if (srcTexture.isDataTexture) {
				_gl.texSubImage2D(_gl.TEXTURE_2D, level, position.x, position.y, width, height, glFormat, glType, srcTexture.image.data);
			} else {
				if (srcTexture.isCompressedTexture) {
					_gl.compressedTexSubImage2D(_gl.TEXTURE_2D, level, position.x, position.y, srcTexture.mipmaps[0].width, srcTexture.mipmaps[0].height, glFormat, srcTexture.mipmaps[0].data);
				} else {
					_gl.texSubImage2D(_gl.TEXTURE_2D, level, position.x, position.y, glFormat, glType, srcTexture.image);
				}
			} // Generate mipmaps only when copying level 0


			if (level === 0 && dstTexture.generateMipmaps) _gl.generateMipmap(_gl.TEXTURE_2D);
			state.unbindTexture();
		};

		this.copyTextureToTexture3D = function (sourceBox, position, srcTexture, dstTexture, level = 0) {
			if (_this.isWebGL1Renderer) {
				console.warn('THREE.WebGLRenderer.copyTextureToTexture3D: can only be used with WebGL2.');
				return;
			}

			const width = sourceBox.max.x - sourceBox.min.x + 1;
			const height = sourceBox.max.y - sourceBox.min.y + 1;
			const depth = sourceBox.max.z - sourceBox.min.z + 1;
			const glFormat = utils.convert(dstTexture.format);
			const glType = utils.convert(dstTexture.type);
			let glTarget;

			if (dstTexture.isDataTexture3D) {
				textures.setTexture3D(dstTexture, 0);
				glTarget = _gl.TEXTURE_3D;
			} else if (dstTexture.isDataTexture2DArray) {
				textures.setTexture2DArray(dstTexture, 0);
				glTarget = _gl.TEXTURE_2D_ARRAY;
			} else {
				console.warn('THREE.WebGLRenderer.copyTextureToTexture3D: only supports THREE.DataTexture3D and THREE.DataTexture2DArray.');
				return;
			}

			_gl.pixelStorei(_gl.UNPACK_FLIP_Y_WEBGL, dstTexture.flipY);

			_gl.pixelStorei(_gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, dstTexture.premultiplyAlpha);

			_gl.pixelStorei(_gl.UNPACK_ALIGNMENT, dstTexture.unpackAlignment);

			const unpackRowLen = _gl.getParameter(_gl.UNPACK_ROW_LENGTH);

			const unpackImageHeight = _gl.getParameter(_gl.UNPACK_IMAGE_HEIGHT);

			const unpackSkipPixels = _gl.getParameter(_gl.UNPACK_SKIP_PIXELS);

			const unpackSkipRows = _gl.getParameter(_gl.UNPACK_SKIP_ROWS);

			const unpackSkipImages = _gl.getParameter(_gl.UNPACK_SKIP_IMAGES);

			const image = srcTexture.isCompressedTexture ? srcTexture.mipmaps[0] : srcTexture.image;

			_gl.pixelStorei(_gl.UNPACK_ROW_LENGTH, image.width);

			_gl.pixelStorei(_gl.UNPACK_IMAGE_HEIGHT, image.height);

			_gl.pixelStorei(_gl.UNPACK_SKIP_PIXELS, sourceBox.min.x);

			_gl.pixelStorei(_gl.UNPACK_SKIP_ROWS, sourceBox.min.y);

			_gl.pixelStorei(_gl.UNPACK_SKIP_IMAGES, sourceBox.min.z);

			if (srcTexture.isDataTexture || srcTexture.isDataTexture3D) {
				_gl.texSubImage3D(glTarget, level, position.x, position.y, position.z, width, height, depth, glFormat, glType, image.data);
			} else {
				if (srcTexture.isCompressedTexture) {
					console.warn('THREE.WebGLRenderer.copyTextureToTexture3D: untested support for compressed srcTexture.');

					_gl.compressedTexSubImage3D(glTarget, level, position.x, position.y, position.z, width, height, depth, glFormat, image.data);
				} else {
					_gl.texSubImage3D(glTarget, level, position.x, position.y, position.z, width, height, depth, glFormat, glType, image);
				}
			}

			_gl.pixelStorei(_gl.UNPACK_ROW_LENGTH, unpackRowLen);

			_gl.pixelStorei(_gl.UNPACK_IMAGE_HEIGHT, unpackImageHeight);

			_gl.pixelStorei(_gl.UNPACK_SKIP_PIXELS, unpackSkipPixels);

			_gl.pixelStorei(_gl.UNPACK_SKIP_ROWS, unpackSkipRows);

			_gl.pixelStorei(_gl.UNPACK_SKIP_IMAGES, unpackSkipImages); // Generate mipmaps only when copying level 0


			if (level === 0 && dstTexture.generateMipmaps) _gl.generateMipmap(glTarget);
			state.unbindTexture();
		};

		this.initTexture = function (texture) {
			textures.setTexture2D(texture, 0);
			state.unbindTexture();
		};

		this.resetState = function () {
			_currentActiveCubeFace = 0;
			_currentActiveMipmapLevel = 0;
			_currentRenderTarget = null;
			state.reset();
			bindingStates.reset();
		};

		if (typeof __THREE_DEVTOOLS__ !== 'undefined') {
			__THREE_DEVTOOLS__.dispatchEvent(new CustomEvent('observe', {
				detail: this
			})); // eslint-disable-line no-undef

		}
	}

	class WebGL1Renderer extends WebGLRenderer {}

	WebGL1Renderer.prototype.isWebGL1Renderer = true;

	class FogExp2 {
		constructor(color, density = 0.00025) {
			this.name = '';
			this.color = new Color(color);
			this.density = density;
		}

		clone() {
			return new FogExp2(this.color, this.density);
		}

		toJSON() {
			return {
				type: 'FogExp2',
				color: this.color.getHex(),
				density: this.density
			};
		}

	}

	FogExp2.prototype.isFogExp2 = true;

	class Fog {
		constructor(color, near = 1, far = 1000) {
			this.name = '';
			this.color = new Color(color);
			this.near = near;
			this.far = far;
		}

		clone() {
			return new Fog(this.color, this.near, this.far);
		}

		toJSON() {
			return {
				type: 'Fog',
				color: this.color.getHex(),
				near: this.near,
				far: this.far
			};
		}

	}

	Fog.prototype.isFog = true;

	class Scene extends Object3D {
		constructor() {
			super();
			this.type = 'Scene';
			this.background = null;
			this.environment = null;
			this.fog = null;
			this.overrideMaterial = null;
			this.autoUpdate = true; // checked by the renderer

			if (typeof __THREE_DEVTOOLS__ !== 'undefined') {
				__THREE_DEVTOOLS__.dispatchEvent(new CustomEvent('observe', {
					detail: this
				})); // eslint-disable-line no-undef

			}
		}

		copy(source, recursive) {
			super.copy(source, recursive);
			if (source.background !== null) this.background = source.background.clone();
			if (source.environment !== null) this.environment = source.environment.clone();
			if (source.fog !== null) this.fog = source.fog.clone();
			if (source.overrideMaterial !== null) this.overrideMaterial = source.overrideMaterial.clone();
			this.autoUpdate = source.autoUpdate;
			this.matrixAutoUpdate = source.matrixAutoUpdate;
			return this;
		}

		toJSON(meta) {
			const data = super.toJSON(meta);
			if (this.fog !== null) data.object.fog = this.fog.toJSON();
			return data;
		}

	}

	Scene.prototype.isScene = true;

	class InterleavedBuffer {
		constructor(array, stride) {
			this.array = array;
			this.stride = stride;
			this.count = array !== undefined ? array.length / stride : 0;
			this.usage = StaticDrawUsage;
			this.updateRange = {
				offset: 0,
				count: -1
			};
			this.version = 0;
			this.uuid = generateUUID();
		}

		onUploadCallback() {}

		set needsUpdate(value) {
			if (value === true) this.version++;
		}

		setUsage(value) {
			this.usage = value;
			return this;
		}

		copy(source) {
			this.array = new source.array.constructor(source.array);
			this.count = source.count;
			this.stride = source.stride;
			this.usage = source.usage;
			return this;
		}

		copyAt(index1, attribute, index2) {
			index1 *= this.stride;
			index2 *= attribute.stride;

			for (let i = 0, l = this.stride; i < l; i++) {
				this.array[index1 + i] = attribute.array[index2 + i];
			}

			return this;
		}

		set(value, offset = 0) {
			this.array.set(value, offset);
			return this;
		}

		clone(data) {
			if (data.arrayBuffers === undefined) {
				data.arrayBuffers = {};
			}

			if (this.array.buffer._uuid === undefined) {
				this.array.buffer._uuid = generateUUID();
			}

			if (data.arrayBuffers[this.array.buffer._uuid] === undefined) {
				data.arrayBuffers[this.array.buffer._uuid] = this.array.slice(0).buffer;
			}

			const array = new this.array.constructor(data.arrayBuffers[this.array.buffer._uuid]);
			const ib = new this.constructor(array, this.stride);
			ib.setUsage(this.usage);
			return ib;
		}

		onUpload(callback) {
			this.onUploadCallback = callback;
			return this;
		}

		toJSON(data) {
			if (data.arrayBuffers === undefined) {
				data.arrayBuffers = {};
			} // generate UUID for array buffer if necessary


			if (this.array.buffer._uuid === undefined) {
				this.array.buffer._uuid = generateUUID();
			}

			if (data.arrayBuffers[this.array.buffer._uuid] === undefined) {
				data.arrayBuffers[this.array.buffer._uuid] = Array.prototype.slice.call(new Uint32Array(this.array.buffer));
			} //


			return {
				uuid: this.uuid,
				buffer: this.array.buffer._uuid,
				type: this.array.constructor.name,
				stride: this.stride
			};
		}

	}

	InterleavedBuffer.prototype.isInterleavedBuffer = true;

	const _vector$6 = /*@__PURE__*/new Vector3();

	class InterleavedBufferAttribute {
		constructor(interleavedBuffer, itemSize, offset, normalized = false) {
			this.name = '';
			this.data = interleavedBuffer;
			this.itemSize = itemSize;
			this.offset = offset;
			this.normalized = normalized === true;
		}

		get count() {
			return this.data.count;
		}

		get array() {
			return this.data.array;
		}

		set needsUpdate(value) {
			this.data.needsUpdate = value;
		}

		applyMatrix4(m) {
			for (let i = 0, l = this.data.count; i < l; i++) {
				_vector$6.x = this.getX(i);
				_vector$6.y = this.getY(i);
				_vector$6.z = this.getZ(i);

				_vector$6.applyMatrix4(m);

				this.setXYZ(i, _vector$6.x, _vector$6.y, _vector$6.z);
			}

			return this;
		}

		applyNormalMatrix(m) {
			for (let i = 0, l = this.count; i < l; i++) {
				_vector$6.x = this.getX(i);
				_vector$6.y = this.getY(i);
				_vector$6.z = this.getZ(i);

				_vector$6.applyNormalMatrix(m);

				this.setXYZ(i, _vector$6.x, _vector$6.y, _vector$6.z);
			}

			return this;
		}

		transformDirection(m) {
			for (let i = 0, l = this.count; i < l; i++) {
				_vector$6.x = this.getX(i);
				_vector$6.y = this.getY(i);
				_vector$6.z = this.getZ(i);

				_vector$6.transformDirection(m);

				this.setXYZ(i, _vector$6.x, _vector$6.y, _vector$6.z);
			}

			return this;
		}

		setX(index, x) {
			this.data.array[index * this.data.stride + this.offset] = x;
			return this;
		}

		setY(index, y) {
			this.data.array[index * this.data.stride + this.offset + 1] = y;
			return this;
		}

		setZ(index, z) {
			this.data.array[index * this.data.stride + this.offset + 2] = z;
			return this;
		}

		setW(index, w) {
			this.data.array[index * this.data.stride + this.offset + 3] = w;
			return this;
		}

		getX(index) {
			return this.data.array[index * this.data.stride + this.offset];
		}

		getY(index) {
			return this.data.array[index * this.data.stride + this.offset + 1];
		}

		getZ(index) {
			return this.data.array[index * this.data.stride + this.offset + 2];
		}

		getW(index) {
			return this.data.array[index * this.data.stride + this.offset + 3];
		}

		setXY(index, x, y) {
			index = index * this.data.stride + this.offset;
			this.data.array[index + 0] = x;
			this.data.array[index + 1] = y;
			return this;
		}

		setXYZ(index, x, y, z) {
			index = index * this.data.stride + this.offset;
			this.data.array[index + 0] = x;
			this.data.array[index + 1] = y;
			this.data.array[index + 2] = z;
			return this;
		}

		setXYZW(index, x, y, z, w) {
			index = index * this.data.stride + this.offset;
			this.data.array[index + 0] = x;
			this.data.array[index + 1] = y;
			this.data.array[index + 2] = z;
			this.data.array[index + 3] = w;
			return this;
		}

		clone(data) {
			if (data === undefined) {
				console.log('THREE.InterleavedBufferAttribute.clone(): Cloning an interlaved buffer attribute will deinterleave buffer data.');
				const array = [];

				for (let i = 0; i < this.count; i++) {
					const index = i * this.data.stride + this.offset;

					for (let j = 0; j < this.itemSize; j++) {
						array.push(this.data.array[index + j]);
					}
				}

				return new BufferAttribute(new this.array.constructor(array), this.itemSize, this.normalized);
			} else {
				if (data.interleavedBuffers === undefined) {
					data.interleavedBuffers = {};
				}

				if (data.interleavedBuffers[this.data.uuid] === undefined) {
					data.interleavedBuffers[this.data.uuid] = this.data.clone(data);
				}

				return new InterleavedBufferAttribute(data.interleavedBuffers[this.data.uuid], this.itemSize, this.offset, this.normalized);
			}
		}

		toJSON(data) {
			if (data === undefined) {
				console.log('THREE.InterleavedBufferAttribute.toJSON(): Serializing an interlaved buffer attribute will deinterleave buffer data.');
				const array = [];

				for (let i = 0; i < this.count; i++) {
					const index = i * this.data.stride + this.offset;

					for (let j = 0; j < this.itemSize; j++) {
						array.push(this.data.array[index + j]);
					}
				} // deinterleave data and save it as an ordinary buffer attribute for now


				return {
					itemSize: this.itemSize,
					type: this.array.constructor.name,
					array: array,
					normalized: this.normalized
				};
			} else {
				// save as true interlaved attribtue
				if (data.interleavedBuffers === undefined) {
					data.interleavedBuffers = {};
				}

				if (data.interleavedBuffers[this.data.uuid] === undefined) {
					data.interleavedBuffers[this.data.uuid] = this.data.toJSON(data);
				}

				return {
					isInterleavedBufferAttribute: true,
					itemSize: this.itemSize,
					data: this.data.uuid,
					offset: this.offset,
					normalized: this.normalized
				};
			}
		}

	}

	InterleavedBufferAttribute.prototype.isInterleavedBufferAttribute = true;

	/**
	 * parameters = {
	 *	color: <hex>,
	 *	map: new THREE.Texture( <Image> ),
	 *	alphaMap: new THREE.Texture( <Image> ),
	 *	rotation: <float>,
	 *	sizeAttenuation: <bool>
	 * }
	 */

	class SpriteMaterial extends Material {
		constructor(parameters) {
			super();
			this.type = 'SpriteMaterial';
			this.color = new Color(0xffffff);
			this.map = null;
			this.alphaMap = null;
			this.rotation = 0;
			this.sizeAttenuation = true;
			this.transparent = true;
			this.setValues(parameters);
		}

		copy(source) {
			super.copy(source);
			this.color.copy(source.color);
			this.map = source.map;
			this.alphaMap = source.alphaMap;
			this.rotation = source.rotation;
			this.sizeAttenuation = source.sizeAttenuation;
			return this;
		}

	}

	SpriteMaterial.prototype.isSpriteMaterial = true;

	let _geometry;

	const _intersectPoint = /*@__PURE__*/new Vector3();

	const _worldScale = /*@__PURE__*/new Vector3();

	const _mvPosition = /*@__PURE__*/new Vector3();

	const _alignedPosition = /*@__PURE__*/new Vector2();

	const _rotatedPosition = /*@__PURE__*/new Vector2();

	const _viewWorldMatrix = /*@__PURE__*/new Matrix4();

	const _vA = /*@__PURE__*/new Vector3();

	const _vB = /*@__PURE__*/new Vector3();

	const _vC = /*@__PURE__*/new Vector3();

	const _uvA = /*@__PURE__*/new Vector2();

	const _uvB = /*@__PURE__*/new Vector2();

	const _uvC = /*@__PURE__*/new Vector2();

	class Sprite extends Object3D {
		constructor(material) {
			super();
			this.type = 'Sprite';

			if (_geometry === undefined) {
				_geometry = new BufferGeometry();
				const float32Array = new Float32Array([-0.5, -0.5, 0, 0, 0, 0.5, -0.5, 0, 1, 0, 0.5, 0.5, 0, 1, 1, -0.5, 0.5, 0, 0, 1]);
				const interleavedBuffer = new InterleavedBuffer(float32Array, 5);

				_geometry.setIndex([0, 1, 2, 0, 2, 3]);

				_geometry.setAttribute('position', new InterleavedBufferAttribute(interleavedBuffer, 3, 0, false));

				_geometry.setAttribute('uv', new InterleavedBufferAttribute(interleavedBuffer, 2, 3, false));
			}

			this.geometry = _geometry;
			this.material = material !== undefined ? material : new SpriteMaterial();
			this.center = new Vector2(0.5, 0.5);
		}

		raycast(raycaster, intersects) {
			if (raycaster.camera === null) {
				console.error('THREE.Sprite: "Raycaster.camera" needs to be set in order to raycast against sprites.');
			}

			_worldScale.setFromMatrixScale(this.matrixWorld);

			_viewWorldMatrix.copy(raycaster.camera.matrixWorld);

			this.modelViewMatrix.multiplyMatrices(raycaster.camera.matrixWorldInverse, this.matrixWorld);

			_mvPosition.setFromMatrixPosition(this.modelViewMatrix);

			if (raycaster.camera.isPerspectiveCamera && this.material.sizeAttenuation === false) {
				_worldScale.multiplyScalar(-_mvPosition.z);
			}

			const rotation = this.material.rotation;
			let sin, cos;

			if (rotation !== 0) {
				cos = Math.cos(rotation);
				sin = Math.sin(rotation);
			}

			const center = this.center;
			transformVertex(_vA.set(-0.5, -0.5, 0), _mvPosition, center, _worldScale, sin, cos);
			transformVertex(_vB.set(0.5, -0.5, 0), _mvPosition, center, _worldScale, sin, cos);
			transformVertex(_vC.set(0.5, 0.5, 0), _mvPosition, center, _worldScale, sin, cos);

			_uvA.set(0, 0);

			_uvB.set(1, 0);

			_uvC.set(1, 1); // check first triangle


			let intersect = raycaster.ray.intersectTriangle(_vA, _vB, _vC, false, _intersectPoint);

			if (intersect === null) {
				// check second triangle
				transformVertex(_vB.set(-0.5, 0.5, 0), _mvPosition, center, _worldScale, sin, cos);

				_uvB.set(0, 1);

				intersect = raycaster.ray.intersectTriangle(_vA, _vC, _vB, false, _intersectPoint);

				if (intersect === null) {
					return;
				}
			}

			const distance = raycaster.ray.origin.distanceTo(_intersectPoint);
			if (distance < raycaster.near || distance > raycaster.far) return;
			intersects.push({
				distance: distance,
				point: _intersectPoint.clone(),
				uv: Triangle.getUV(_intersectPoint, _vA, _vB, _vC, _uvA, _uvB, _uvC, new Vector2()),
				face: null,
				object: this
			});
		}

		copy(source) {
			super.copy(source);
			if (source.center !== undefined) this.center.copy(source.center);
			this.material = source.material;
			return this;
		}

	}

	Sprite.prototype.isSprite = true;

	function transformVertex(vertexPosition, mvPosition, center, scale, sin, cos) {
		// compute position in camera space
		_alignedPosition.subVectors(vertexPosition, center).addScalar(0.5).multiply(scale); // to check if rotation is not zero


		if (sin !== undefined) {
			_rotatedPosition.x = cos * _alignedPosition.x - sin * _alignedPosition.y;
			_rotatedPosition.y = sin * _alignedPosition.x + cos * _alignedPosition.y;
		} else {
			_rotatedPosition.copy(_alignedPosition);
		}

		vertexPosition.copy(mvPosition);
		vertexPosition.x += _rotatedPosition.x;
		vertexPosition.y += _rotatedPosition.y; // transform to world space

		vertexPosition.applyMatrix4(_viewWorldMatrix);
	}

	const _v1$2 = /*@__PURE__*/new Vector3();

	const _v2$1 = /*@__PURE__*/new Vector3();

	class LOD extends Object3D {
		constructor() {
			super();
			this._currentLevel = 0;
			this.type = 'LOD';
			Object.defineProperties(this, {
				levels: {
					enumerable: true,
					value: []
				},
				isLOD: {
					value: true
				}
			});
			this.autoUpdate = true;
		}

		copy(source) {
			super.copy(source, false);
			const levels = source.levels;

			for (let i = 0, l = levels.length; i < l; i++) {
				const level = levels[i];
				this.addLevel(level.object.clone(), level.distance);
			}

			this.autoUpdate = source.autoUpdate;
			return this;
		}

		addLevel(object, distance = 0) {
			distance = Math.abs(distance);
			const levels = this.levels;
			let l;

			for (l = 0; l < levels.length; l++) {
				if (distance < levels[l].distance) {
					break;
				}
			}

			levels.splice(l, 0, {
				distance: distance,
				object: object
			});
			this.add(object);
			return this;
		}

		getCurrentLevel() {
			return this._currentLevel;
		}

		getObjectForDistance(distance) {
			const levels = this.levels;

			if (levels.length > 0) {
				let i, l;

				for (i = 1, l = levels.length; i < l; i++) {
					if (distance < levels[i].distance) {
						break;
					}
				}

				return levels[i - 1].object;
			}

			return null;
		}

		raycast(raycaster, intersects) {
			const levels = this.levels;

			if (levels.length > 0) {
				_v1$2.setFromMatrixPosition(this.matrixWorld);

				const distance = raycaster.ray.origin.distanceTo(_v1$2);
				this.getObjectForDistance(distance).raycast(raycaster, intersects);
			}
		}

		update(camera) {
			const levels = this.levels;

			if (levels.length > 1) {
				_v1$2.setFromMatrixPosition(camera.matrixWorld);

				_v2$1.setFromMatrixPosition(this.matrixWorld);

				const distance = _v1$2.distanceTo(_v2$1) / camera.zoom;
				levels[0].object.visible = true;
				let i, l;

				for (i = 1, l = levels.length; i < l; i++) {
					if (distance >= levels[i].distance) {
						levels[i - 1].object.visible = false;
						levels[i].object.visible = true;
					} else {
						break;
					}
				}

				this._currentLevel = i - 1;

				for (; i < l; i++) {
					levels[i].object.visible = false;
				}
			}
		}

		toJSON(meta) {
			const data = super.toJSON(meta);
			if (this.autoUpdate === false) data.object.autoUpdate = false;
			data.object.levels = [];
			const levels = this.levels;

			for (let i = 0, l = levels.length; i < l; i++) {
				const level = levels[i];
				data.object.levels.push({
					object: level.object.uuid,
					distance: level.distance
				});
			}

			return data;
		}

	}

	const _basePosition = /*@__PURE__*/new Vector3();

	const _skinIndex = /*@__PURE__*/new Vector4();

	const _skinWeight = /*@__PURE__*/new Vector4();

	const _vector$5 = /*@__PURE__*/new Vector3();

	const _matrix = /*@__PURE__*/new Matrix4();

	class SkinnedMesh extends Mesh {
		constructor(geometry, material) {
			super(geometry, material);
			this.type = 'SkinnedMesh';
			this.bindMode = 'attached';
			this.bindMatrix = new Matrix4();
			this.bindMatrixInverse = new Matrix4();
		}

		copy(source) {
			super.copy(source);
			this.bindMode = source.bindMode;
			this.bindMatrix.copy(source.bindMatrix);
			this.bindMatrixInverse.copy(source.bindMatrixInverse);
			this.skeleton = source.skeleton;
			return this;
		}

		bind(skeleton, bindMatrix) {
			this.skeleton = skeleton;

			if (bindMatrix === undefined) {
				this.updateMatrixWorld(true);
				this.skeleton.calculateInverses();
				bindMatrix = this.matrixWorld;
			}

			this.bindMatrix.copy(bindMatrix);
			this.bindMatrixInverse.copy(bindMatrix).invert();
		}

		pose() {
			this.skeleton.pose();
		}

		normalizeSkinWeights() {
			const vector = new Vector4();
			const skinWeight = this.geometry.attributes.skinWeight;

			for (let i = 0, l = skinWeight.count; i < l; i++) {
				vector.x = skinWeight.getX(i);
				vector.y = skinWeight.getY(i);
				vector.z = skinWeight.getZ(i);
				vector.w = skinWeight.getW(i);
				const scale = 1.0 / vector.manhattanLength();

				if (scale !== Infinity) {
					vector.multiplyScalar(scale);
				} else {
					vector.set(1, 0, 0, 0); // do something reasonable
				}

				skinWeight.setXYZW(i, vector.x, vector.y, vector.z, vector.w);
			}
		}

		updateMatrixWorld(force) {
			super.updateMatrixWorld(force);

			if (this.bindMode === 'attached') {
				this.bindMatrixInverse.copy(this.matrixWorld).invert();
			} else if (this.bindMode === 'detached') {
				this.bindMatrixInverse.copy(this.bindMatrix).invert();
			} else {
				console.warn('THREE.SkinnedMesh: Unrecognized bindMode: ' + this.bindMode);
			}
		}

		boneTransform(index, target) {
			const skeleton = this.skeleton;
			const geometry = this.geometry;

			_skinIndex.fromBufferAttribute(geometry.attributes.skinIndex, index);

			_skinWeight.fromBufferAttribute(geometry.attributes.skinWeight, index);

			_basePosition.copy(target).applyMatrix4(this.bindMatrix);

			target.set(0, 0, 0);

			for (let i = 0; i < 4; i++) {
				const weight = _skinWeight.getComponent(i);

				if (weight !== 0) {
					const boneIndex = _skinIndex.getComponent(i);

					_matrix.multiplyMatrices(skeleton.bones[boneIndex].matrixWorld, skeleton.boneInverses[boneIndex]);

					target.addScaledVector(_vector$5.copy(_basePosition).applyMatrix4(_matrix), weight);
				}
			}

			return target.applyMatrix4(this.bindMatrixInverse);
		}

	}

	SkinnedMesh.prototype.isSkinnedMesh = true;

	class Bone extends Object3D {
		constructor() {
			super();
			this.type = 'Bone';
		}

	}

	Bone.prototype.isBone = true;

	class DataTexture extends Texture {
		constructor(data = null, width = 1, height = 1, format, type, mapping, wrapS, wrapT, magFilter = NearestFilter, minFilter = NearestFilter, anisotropy, encoding) {
			super(null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding);
			this.image = {
				data: data,
				width: width,
				height: height
			};
			this.magFilter = magFilter;
			this.minFilter = minFilter;
			this.generateMipmaps = false;
			this.flipY = false;
			this.unpackAlignment = 1;
			this.needsUpdate = true;
		}

	}

	DataTexture.prototype.isDataTexture = true;

	const _offsetMatrix = /*@__PURE__*/new Matrix4();

	const _identityMatrix = /*@__PURE__*/new Matrix4();

	class Skeleton {
		constructor(bones = [], boneInverses = []) {
			this.uuid = generateUUID();
			this.bones = bones.slice(0);
			this.boneInverses = boneInverses;
			this.boneMatrices = null;
			this.boneTexture = null;
			this.boneTextureSize = 0;
			this.frame = -1;
			this.init();
		}

		init() {
			const bones = this.bones;
			const boneInverses = this.boneInverses;
			this.boneMatrices = new Float32Array(bones.length * 16); // calculate inverse bone matrices if necessary

			if (boneInverses.length === 0) {
				this.calculateInverses();
			} else {
				// handle special case
				if (bones.length !== boneInverses.length) {
					console.warn('THREE.Skeleton: Number of inverse bone matrices does not match amount of bones.');
					this.boneInverses = [];

					for (let i = 0, il = this.bones.length; i < il; i++) {
						this.boneInverses.push(new Matrix4());
					}
				}
			}
		}

		calculateInverses() {
			this.boneInverses.length = 0;

			for (let i = 0, il = this.bones.length; i < il; i++) {
				const inverse = new Matrix4();

				if (this.bones[i]) {
					inverse.copy(this.bones[i].matrixWorld).invert();
				}

				this.boneInverses.push(inverse);
			}
		}

		pose() {
			// recover the bind-time world matrices
			for (let i = 0, il = this.bones.length; i < il; i++) {
				const bone = this.bones[i];

				if (bone) {
					bone.matrixWorld.copy(this.boneInverses[i]).invert();
				}
			} // compute the local matrices, positions, rotations and scales


			for (let i = 0, il = this.bones.length; i < il; i++) {
				const bone = this.bones[i];

				if (bone) {
					if (bone.parent && bone.parent.isBone) {
						bone.matrix.copy(bone.parent.matrixWorld).invert();
						bone.matrix.multiply(bone.matrixWorld);
					} else {
						bone.matrix.copy(bone.matrixWorld);
					}

					bone.matrix.decompose(bone.position, bone.quaternion, bone.scale);
				}
			}
		}

		update() {
			const bones = this.bones;
			const boneInverses = this.boneInverses;
			const boneMatrices = this.boneMatrices;
			const boneTexture = this.boneTexture; // flatten bone matrices to array

			for (let i = 0, il = bones.length; i < il; i++) {
				// compute the offset between the current and the original transform
				const matrix = bones[i] ? bones[i].matrixWorld : _identityMatrix;

				_offsetMatrix.multiplyMatrices(matrix, boneInverses[i]);

				_offsetMatrix.toArray(boneMatrices, i * 16);
			}

			if (boneTexture !== null) {
				boneTexture.needsUpdate = true;
			}
		}

		clone() {
			return new Skeleton(this.bones, this.boneInverses);
		}

		computeBoneTexture() {
			// layout (1 matrix = 4 pixels)
			//			RGBA RGBA RGBA RGBA (=> column1, column2, column3, column4)
			//	with	8x8	pixel texture max	 16 bones * 4 pixels =	(8 * 8)
			//			 16x16 pixel texture max	 64 bones * 4 pixels = (16 * 16)
			//			 32x32 pixel texture max	256 bones * 4 pixels = (32 * 32)
			//			 64x64 pixel texture max 1024 bones * 4 pixels = (64 * 64)
			let size = Math.sqrt(this.bones.length * 4); // 4 pixels needed for 1 matrix

			size = ceilPowerOfTwo(size);
			size = Math.max(size, 4);
			const boneMatrices = new Float32Array(size * size * 4); // 4 floats per RGBA pixel

			boneMatrices.set(this.boneMatrices); // copy current values

			const boneTexture = new DataTexture(boneMatrices, size, size, RGBAFormat, FloatType);
			this.boneMatrices = boneMatrices;
			this.boneTexture = boneTexture;
			this.boneTextureSize = size;
			return this;
		}

		getBoneByName(name) {
			for (let i = 0, il = this.bones.length; i < il; i++) {
				const bone = this.bones[i];

				if (bone.name === name) {
					return bone;
				}
			}

			return undefined;
		}

		dispose() {
			if (this.boneTexture !== null) {
				this.boneTexture.dispose();
				this.boneTexture = null;
			}
		}

		fromJSON(json, bones) {
			this.uuid = json.uuid;

			for (let i = 0, l = json.bones.length; i < l; i++) {
				const uuid = json.bones[i];
				let bone = bones[uuid];

				if (bone === undefined) {
					console.warn('THREE.Skeleton: No bone found with UUID:', uuid);
					bone = new Bone();
				}

				this.bones.push(bone);
				this.boneInverses.push(new Matrix4().fromArray(json.boneInverses[i]));
			}

			this.init();
			return this;
		}

		toJSON() {
			const data = {
				metadata: {
					version: 4.5,
					type: 'Skeleton',
					generator: 'Skeleton.toJSON'
				},
				bones: [],
				boneInverses: []
			};
			data.uuid = this.uuid;
			const bones = this.bones;
			const boneInverses = this.boneInverses;

			for (let i = 0, l = bones.length; i < l; i++) {
				const bone = bones[i];
				data.bones.push(bone.uuid);
				const boneInverse = boneInverses[i];
				data.boneInverses.push(boneInverse.toArray());
			}

			return data;
		}

	}

	class InstancedBufferAttribute extends BufferAttribute {
		constructor(array, itemSize, normalized, meshPerAttribute = 1) {
			if (typeof normalized === 'number') {
				meshPerAttribute = normalized;
				normalized = false;
				console.error('THREE.InstancedBufferAttribute: The constructor now expects normalized as the third argument.');
			}

			super(array, itemSize, normalized);
			this.meshPerAttribute = meshPerAttribute;
		}

		copy(source) {
			super.copy(source);
			this.meshPerAttribute = source.meshPerAttribute;
			return this;
		}

		toJSON() {
			const data = super.toJSON();
			data.meshPerAttribute = this.meshPerAttribute;
			data.isInstancedBufferAttribute = true;
			return data;
		}

	}

	InstancedBufferAttribute.prototype.isInstancedBufferAttribute = true;

	const _instanceLocalMatrix = /*@__PURE__*/new Matrix4();

	const _instanceWorldMatrix = /*@__PURE__*/new Matrix4();

	const _instanceIntersects = [];

	const _mesh = /*@__PURE__*/new Mesh();

	class InstancedMesh extends Mesh {
		constructor(geometry, material, count) {
			super(geometry, material);
			this.instanceMatrix = new InstancedBufferAttribute(new Float32Array(count * 16), 16);
			this.instanceColor = null;
			this.count = count;
			this.frustumCulled = false;
		}

		copy(source) {
			super.copy(source);
			this.instanceMatrix.copy(source.instanceMatrix);
			if (source.instanceColor !== null) this.instanceColor = source.instanceColor.clone();
			this.count = source.count;
			return this;
		}

		getColorAt(index, color) {
			color.fromArray(this.instanceColor.array, index * 3);
		}

		getMatrixAt(index, matrix) {
			matrix.fromArray(this.instanceMatrix.array, index * 16);
		}

		raycast(raycaster, intersects) {
			const matrixWorld = this.matrixWorld;
			const raycastTimes = this.count;
			_mesh.geometry = this.geometry;
			_mesh.material = this.material;
			if (_mesh.material === undefined) return;

			for (let instanceId = 0; instanceId < raycastTimes; instanceId++) {
				// calculate the world matrix for each instance
				this.getMatrixAt(instanceId, _instanceLocalMatrix);

				_instanceWorldMatrix.multiplyMatrices(matrixWorld, _instanceLocalMatrix); // the mesh represents this single instance


				_mesh.matrixWorld = _instanceWorldMatrix;

				_mesh.raycast(raycaster, _instanceIntersects); // process the result of raycast


				for (let i = 0, l = _instanceIntersects.length; i < l; i++) {
					const intersect = _instanceIntersects[i];
					intersect.instanceId = instanceId;
					intersect.object = this;
					intersects.push(intersect);
				}

				_instanceIntersects.length = 0;
			}
		}

		setColorAt(index, color) {
			if (this.instanceColor === null) {
				this.instanceColor = new InstancedBufferAttribute(new Float32Array(this.instanceMatrix.count * 3), 3);
			}

			color.toArray(this.instanceColor.array, index * 3);
		}

		setMatrixAt(index, matrix) {
			matrix.toArray(this.instanceMatrix.array, index * 16);
		}

		updateMorphTargets() {}

		dispose() {
			this.dispatchEvent({
				type: 'dispose'
			});
		}

	}

	InstancedMesh.prototype.isInstancedMesh = true;

	/**
	 * parameters = {
	 *	color: <hex>,
	 *	opacity: <float>,
	 *
	 *	linewidth: <float>,
	 *	linecap: "round",
	 *	linejoin: "round"
	 * }
	 */

	class LineBasicMaterial extends Material {
		constructor(parameters) {
			super();
			this.type = 'LineBasicMaterial';
			this.color = new Color(0xffffff);
			this.linewidth = 1;
			this.linecap = 'round';
			this.linejoin = 'round';
			this.setValues(parameters);
		}

		copy(source) {
			super.copy(source);
			this.color.copy(source.color);
			this.linewidth = source.linewidth;
			this.linecap = source.linecap;
			this.linejoin = source.linejoin;
			return this;
		}

	}

	LineBasicMaterial.prototype.isLineBasicMaterial = true;

	const _start$1 = /*@__PURE__*/new Vector3();

	const _end$1 = /*@__PURE__*/new Vector3();

	const _inverseMatrix$1 = /*@__PURE__*/new Matrix4();

	const _ray$1 = /*@__PURE__*/new Ray();

	const _sphere$1 = /*@__PURE__*/new Sphere();

	class Line extends Object3D {
		constructor(geometry = new BufferGeometry(), material = new LineBasicMaterial()) {
			super();
			this.type = 'Line';
			this.geometry = geometry;
			this.material = material;
			this.updateMorphTargets();
		}

		copy(source) {
			super.copy(source);
			this.material = source.material;
			this.geometry = source.geometry;
			return this;
		}

		computeLineDistances() {
			const geometry = this.geometry;

			if (geometry.isBufferGeometry) {
				// we assume non-indexed geometry
				if (geometry.index === null) {
					const positionAttribute = geometry.attributes.position;
					const lineDistances = [0];

					for (let i = 1, l = positionAttribute.count; i < l; i++) {
						_start$1.fromBufferAttribute(positionAttribute, i - 1);

						_end$1.fromBufferAttribute(positionAttribute, i);

						lineDistances[i] = lineDistances[i - 1];
						lineDistances[i] += _start$1.distanceTo(_end$1);
					}

					geometry.setAttribute('lineDistance', new Float32BufferAttribute(lineDistances, 1));
				} else {
					console.warn('THREE.Line.computeLineDistances(): Computation only possible with non-indexed BufferGeometry.');
				}
			} else if (geometry.isGeometry) {
				console.error('THREE.Line.computeLineDistances() no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.');
			}

			return this;
		}

		raycast(raycaster, intersects) {
			const geometry = this.geometry;
			const matrixWorld = this.matrixWorld;
			const threshold = raycaster.params.Line.threshold;
			const drawRange = geometry.drawRange; // Checking boundingSphere distance to ray

			if (geometry.boundingSphere === null) geometry.computeBoundingSphere();

			_sphere$1.copy(geometry.boundingSphere);

			_sphere$1.applyMatrix4(matrixWorld);

			_sphere$1.radius += threshold;
			if (raycaster.ray.intersectsSphere(_sphere$1) === false) return; //

			_inverseMatrix$1.copy(matrixWorld).invert();

			_ray$1.copy(raycaster.ray).applyMatrix4(_inverseMatrix$1);

			const localThreshold = threshold / ((this.scale.x + this.scale.y + this.scale.z) / 3);
			const localThresholdSq = localThreshold * localThreshold;
			const vStart = new Vector3();
			const vEnd = new Vector3();
			const interSegment = new Vector3();
			const interRay = new Vector3();
			const step = this.isLineSegments ? 2 : 1;

			if (geometry.isBufferGeometry) {
				const index = geometry.index;
				const attributes = geometry.attributes;
				const positionAttribute = attributes.position;

				if (index !== null) {
					const start = Math.max(0, drawRange.start);
					const end = Math.min(index.count, drawRange.start + drawRange.count);

					for (let i = start, l = end - 1; i < l; i += step) {
						const a = index.getX(i);
						const b = index.getX(i + 1);
						vStart.fromBufferAttribute(positionAttribute, a);
						vEnd.fromBufferAttribute(positionAttribute, b);

						const distSq = _ray$1.distanceSqToSegment(vStart, vEnd, interRay, interSegment);

						if (distSq > localThresholdSq) continue;
						interRay.applyMatrix4(this.matrixWorld); //Move back to world space for distance calculation

						const distance = raycaster.ray.origin.distanceTo(interRay);
						if (distance < raycaster.near || distance > raycaster.far) continue;
						intersects.push({
							distance: distance,
							// What do we want? intersection point on the ray or on the segment??
							// point: raycaster.ray.at( distance ),
							point: interSegment.clone().applyMatrix4(this.matrixWorld),
							index: i,
							face: null,
							faceIndex: null,
							object: this
						});
					}
				} else {
					const start = Math.max(0, drawRange.start);
					const end = Math.min(positionAttribute.count, drawRange.start + drawRange.count);

					for (let i = start, l = end - 1; i < l; i += step) {
						vStart.fromBufferAttribute(positionAttribute, i);
						vEnd.fromBufferAttribute(positionAttribute, i + 1);

						const distSq = _ray$1.distanceSqToSegment(vStart, vEnd, interRay, interSegment);

						if (distSq > localThresholdSq) continue;
						interRay.applyMatrix4(this.matrixWorld); //Move back to world space for distance calculation

						const distance = raycaster.ray.origin.distanceTo(interRay);
						if (distance < raycaster.near || distance > raycaster.far) continue;
						intersects.push({
							distance: distance,
							// What do we want? intersection point on the ray or on the segment??
							// point: raycaster.ray.at( distance ),
							point: interSegment.clone().applyMatrix4(this.matrixWorld),
							index: i,
							face: null,
							faceIndex: null,
							object: this
						});
					}
				}
			} else if (geometry.isGeometry) {
				console.error('THREE.Line.raycast() no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.');
			}
		}

		updateMorphTargets() {
			const geometry = this.geometry;

			if (geometry.isBufferGeometry) {
				const morphAttributes = geometry.morphAttributes;
				const keys = Object.keys(morphAttributes);

				if (keys.length > 0) {
					const morphAttribute = morphAttributes[keys[0]];

					if (morphAttribute !== undefined) {
						this.morphTargetInfluences = [];
						this.morphTargetDictionary = {};

						for (let m = 0, ml = morphAttribute.length; m < ml; m++) {
							const name = morphAttribute[m].name || String(m);
							this.morphTargetInfluences.push(0);
							this.morphTargetDictionary[name] = m;
						}
					}
				}
			} else {
				const morphTargets = geometry.morphTargets;

				if (morphTargets !== undefined && morphTargets.length > 0) {
					console.error('THREE.Line.updateMorphTargets() does not support THREE.Geometry. Use THREE.BufferGeometry instead.');
				}
			}
		}

	}

	Line.prototype.isLine = true;

	const _start = /*@__PURE__*/new Vector3();

	const _end = /*@__PURE__*/new Vector3();

	class LineSegments extends Line {
		constructor(geometry, material) {
			super(geometry, material);
			this.type = 'LineSegments';
		}

		computeLineDistances() {
			const geometry = this.geometry;

			if (geometry.isBufferGeometry) {
				// we assume non-indexed geometry
				if (geometry.index === null) {
					const positionAttribute = geometry.attributes.position;
					const lineDistances = [];

					for (let i = 0, l = positionAttribute.count; i < l; i += 2) {
						_start.fromBufferAttribute(positionAttribute, i);

						_end.fromBufferAttribute(positionAttribute, i + 1);

						lineDistances[i] = i === 0 ? 0 : lineDistances[i - 1];
						lineDistances[i + 1] = lineDistances[i] + _start.distanceTo(_end);
					}

					geometry.setAttribute('lineDistance', new Float32BufferAttribute(lineDistances, 1));
				} else {
					console.warn('THREE.LineSegments.computeLineDistances(): Computation only possible with non-indexed BufferGeometry.');
				}
			} else if (geometry.isGeometry) {
				console.error('THREE.LineSegments.computeLineDistances() no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.');
			}

			return this;
		}

	}

	LineSegments.prototype.isLineSegments = true;

	class LineLoop extends Line {
		constructor(geometry, material) {
			super(geometry, material);
			this.type = 'LineLoop';
		}

	}

	LineLoop.prototype.isLineLoop = true;

	/**
	 * parameters = {
	 *	color: <hex>,
	 *	opacity: <float>,
	 *	map: new THREE.Texture( <Image> ),
	 *	alphaMap: new THREE.Texture( <Image> ),
	 *
	 *	size: <float>,
	 *	sizeAttenuation: <bool>
	 *
	 * }
	 */

	class PointsMaterial extends Material {
		constructor(parameters) {
			super();
			this.type = 'PointsMaterial';
			this.color = new Color(0xffffff);
			this.map = null;
			this.alphaMap = null;
			this.size = 1;
			this.sizeAttenuation = true;
			this.setValues(parameters);
		}

		copy(source) {
			super.copy(source);
			this.color.copy(source.color);
			this.map = source.map;
			this.alphaMap = source.alphaMap;
			this.size = source.size;
			this.sizeAttenuation = source.sizeAttenuation;
			return this;
		}

	}

	PointsMaterial.prototype.isPointsMaterial = true;

	const _inverseMatrix = /*@__PURE__*/new Matrix4();

	const _ray = /*@__PURE__*/new Ray();

	const _sphere = /*@__PURE__*/new Sphere();

	const _position$2 = /*@__PURE__*/new Vector3();

	class Points extends Object3D {
		constructor(geometry = new BufferGeometry(), material = new PointsMaterial()) {
			super();
			this.type = 'Points';
			this.geometry = geometry;
			this.material = material;
			this.updateMorphTargets();
		}

		copy(source) {
			super.copy(source);
			this.material = source.material;
			this.geometry = source.geometry;
			return this;
		}

		raycast(raycaster, intersects) {
			const geometry = this.geometry;
			const matrixWorld = this.matrixWorld;
			const threshold = raycaster.params.Points.threshold;
			const drawRange = geometry.drawRange; // Checking boundingSphere distance to ray

			if (geometry.boundingSphere === null) geometry.computeBoundingSphere();

			_sphere.copy(geometry.boundingSphere);

			_sphere.applyMatrix4(matrixWorld);

			_sphere.radius += threshold;
			if (raycaster.ray.intersectsSphere(_sphere) === false) return; //

			_inverseMatrix.copy(matrixWorld).invert();

			_ray.copy(raycaster.ray).applyMatrix4(_inverseMatrix);

			const localThreshold = threshold / ((this.scale.x + this.scale.y + this.scale.z) / 3);
			const localThresholdSq = localThreshold * localThreshold;

			if (geometry.isBufferGeometry) {
				const index = geometry.index;
				const attributes = geometry.attributes;
				const positionAttribute = attributes.position;

				if (index !== null) {
					const start = Math.max(0, drawRange.start);
					const end = Math.min(index.count, drawRange.start + drawRange.count);

					for (let i = start, il = end; i < il; i++) {
						const a = index.getX(i);

						_position$2.fromBufferAttribute(positionAttribute, a);

						testPoint(_position$2, a, localThresholdSq, matrixWorld, raycaster, intersects, this);
					}
				} else {
					const start = Math.max(0, drawRange.start);
					const end = Math.min(positionAttribute.count, drawRange.start + drawRange.count);

					for (let i = start, l = end; i < l; i++) {
						_position$2.fromBufferAttribute(positionAttribute, i);

						testPoint(_position$2, i, localThresholdSq, matrixWorld, raycaster, intersects, this);
					}
				}
			} else {
				console.error('THREE.Points.raycast() no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.');
			}
		}

		updateMorphTargets() {
			const geometry = this.geometry;

			if (geometry.isBufferGeometry) {
				const morphAttributes = geometry.morphAttributes;
				const keys = Object.keys(morphAttributes);

				if (keys.length > 0) {
					const morphAttribute = morphAttributes[keys[0]];

					if (morphAttribute !== undefined) {
						this.morphTargetInfluences = [];
						this.morphTargetDictionary = {};

						for (let m = 0, ml = morphAttribute.length; m < ml; m++) {
							const name = morphAttribute[m].name || String(m);
							this.morphTargetInfluences.push(0);
							this.morphTargetDictionary[name] = m;
						}
					}
				}
			} else {
				const morphTargets = geometry.morphTargets;

				if (morphTargets !== undefined && morphTargets.length > 0) {
					console.error('THREE.Points.updateMorphTargets() does not support THREE.Geometry. Use THREE.BufferGeometry instead.');
				}
			}
		}

	}

	Points.prototype.isPoints = true;

	function testPoint(point, index, localThresholdSq, matrixWorld, raycaster, intersects, object) {
		const rayPointDistanceSq = _ray.distanceSqToPoint(point);

		if (rayPointDistanceSq < localThresholdSq) {
			const intersectPoint = new Vector3();

			_ray.closestPointToPoint(point, intersectPoint);

			intersectPoint.applyMatrix4(matrixWorld);
			const distance = raycaster.ray.origin.distanceTo(intersectPoint);
			if (distance < raycaster.near || distance > raycaster.far) return;
			intersects.push({
				distance: distance,
				distanceToRay: Math.sqrt(rayPointDistanceSq),
				point: intersectPoint,
				index: index,
				face: null,
				object: object
			});
		}
	}

	class VideoTexture extends Texture {
		constructor(video, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy) {
			super(video, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy);
			this.format = format !== undefined ? format : RGBFormat;
			this.minFilter = minFilter !== undefined ? minFilter : LinearFilter;
			this.magFilter = magFilter !== undefined ? magFilter : LinearFilter;
			this.generateMipmaps = false;
			const scope = this;

			function updateVideo() {
				scope.needsUpdate = true;
				video.requestVideoFrameCallback(updateVideo);
			}

			if ('requestVideoFrameCallback' in video) {
				video.requestVideoFrameCallback(updateVideo);
			}
		}

		clone() {
			return new this.constructor(this.image).copy(this);
		}

		update() {
			const video = this.image;
			const hasVideoFrameCallback = ('requestVideoFrameCallback' in video);

			if (hasVideoFrameCallback === false && video.readyState >= video.HAVE_CURRENT_DATA) {
				this.needsUpdate = true;
			}
		}

	}

	VideoTexture.prototype.isVideoTexture = true;

	class CompressedTexture extends Texture {
		constructor(mipmaps, width, height, format, type, mapping, wrapS, wrapT, magFilter, minFilter, anisotropy, encoding) {
			super(null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding);
			this.image = {
				width: width,
				height: height
			};
			this.mipmaps = mipmaps; // no flipping for cube textures
			// (also flipping doesn't work for compressed textures )

			this.flipY = false; // can't generate mipmaps for compressed textures
			// mips must be embedded in DDS files

			this.generateMipmaps = false;
		}

	}

	CompressedTexture.prototype.isCompressedTexture = true;

	class CanvasTexture extends Texture {
		constructor(canvas, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy) {
			super(canvas, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy);
			this.needsUpdate = true;
		}

	}

	CanvasTexture.prototype.isCanvasTexture = true;

	class DepthTexture extends Texture {
		constructor(width, height, type, mapping, wrapS, wrapT, magFilter, minFilter, anisotropy, format) {
			format = format !== undefined ? format : DepthFormat;

			if (format !== DepthFormat && format !== DepthStencilFormat) {
				throw new Error('DepthTexture format must be either THREE.DepthFormat or THREE.DepthStencilFormat');
			}

			if (type === undefined && format === DepthFormat) type = UnsignedShortType;
			if (type === undefined && format === DepthStencilFormat) type = UnsignedInt248Type;
			super(null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy);
			this.image = {
				width: width,
				height: height
			};
			this.magFilter = magFilter !== undefined ? magFilter : NearestFilter;
			this.minFilter = minFilter !== undefined ? minFilter : NearestFilter;
			this.flipY = false;
			this.generateMipmaps = false;
		}

	}

	DepthTexture.prototype.isDepthTexture = true;

	class CircleGeometry extends BufferGeometry {
		constructor(radius = 1, segments = 8, thetaStart = 0, thetaLength = Math.PI * 2) {
			super();
			this.type = 'CircleGeometry';
			this.parameters = {
				radius: radius,
				segments: segments,
				thetaStart: thetaStart,
				thetaLength: thetaLength
			};
			segments = Math.max(3, segments); // buffers

			const indices = [];
			const vertices = [];
			const normals = [];
			const uvs = []; // helper variables

			const vertex = new Vector3();
			const uv = new Vector2(); // center point

			vertices.push(0, 0, 0);
			normals.push(0, 0, 1);
			uvs.push(0.5, 0.5);

			for (let s = 0, i = 3; s <= segments; s++, i += 3) {
				const segment = thetaStart + s / segments * thetaLength; // vertex

				vertex.x = radius * Math.cos(segment);
				vertex.y = radius * Math.sin(segment);
				vertices.push(vertex.x, vertex.y, vertex.z); // normal

				normals.push(0, 0, 1); // uvs

				uv.x = (vertices[i] / radius + 1) / 2;
				uv.y = (vertices[i + 1] / radius + 1) / 2;
				uvs.push(uv.x, uv.y);
			} // indices


			for (let i = 1; i <= segments; i++) {
				indices.push(i, i + 1, 0);
			} // build geometry


			this.setIndex(indices);
			this.setAttribute('position', new Float32BufferAttribute(vertices, 3));
			this.setAttribute('normal', new Float32BufferAttribute(normals, 3));
			this.setAttribute('uv', new Float32BufferAttribute(uvs, 2));
		}

		static fromJSON(data) {
			return new CircleGeometry(data.radius, data.segments, data.thetaStart, data.thetaLength);
		}

	}

	class CylinderGeometry extends BufferGeometry {
		constructor(radiusTop = 1, radiusBottom = 1, height = 1, radialSegments = 8, heightSegments = 1, openEnded = false, thetaStart = 0, thetaLength = Math.PI * 2) {
			super();
			this.type = 'CylinderGeometry';
			this.parameters = {
				radiusTop: radiusTop,
				radiusBottom: radiusBottom,
				height: height,
				radialSegments: radialSegments,
				heightSegments: heightSegments,
				openEnded: openEnded,
				thetaStart: thetaStart,
				thetaLength: thetaLength
			};
			const scope = this;
			radialSegments = Math.floor(radialSegments);
			heightSegments = Math.floor(heightSegments); // buffers

			const indices = [];
			const vertices = [];
			const normals = [];
			const uvs = []; // helper variables

			let index = 0;
			const indexArray = [];
			const halfHeight = height / 2;
			let groupStart = 0; // generate geometry

			generateTorso();

			if (openEnded === false) {
				if (radiusTop > 0) generateCap(true);
				if (radiusBottom > 0) generateCap(false);
			} // build geometry


			this.setIndex(indices);
			this.setAttribute('position', new Float32BufferAttribute(vertices, 3));
			this.setAttribute('normal', new Float32BufferAttribute(normals, 3));
			this.setAttribute('uv', new Float32BufferAttribute(uvs, 2));

			function generateTorso() {
				const normal = new Vector3();
				const vertex = new Vector3();
				let groupCount = 0; // this will be used to calculate the normal

				const slope = (radiusBottom - radiusTop) / height; // generate vertices, normals and uvs

				for (let y = 0; y <= heightSegments; y++) {
					const indexRow = [];
					const v = y / heightSegments; // calculate the radius of the current row

					const radius = v * (radiusBottom - radiusTop) + radiusTop;

					for (let x = 0; x <= radialSegments; x++) {
						const u = x / radialSegments;
						const theta = u * thetaLength + thetaStart;
						const sinTheta = Math.sin(theta);
						const cosTheta = Math.cos(theta); // vertex

						vertex.x = radius * sinTheta;
						vertex.y = -v * height + halfHeight;
						vertex.z = radius * cosTheta;
						vertices.push(vertex.x, vertex.y, vertex.z); // normal

						normal.set(sinTheta, slope, cosTheta).normalize();
						normals.push(normal.x, normal.y, normal.z); // uv

						uvs.push(u, 1 - v); // save index of vertex in respective row

						indexRow.push(index++);
					} // now save vertices of the row in our index array


					indexArray.push(indexRow);
				} // generate indices


				for (let x = 0; x < radialSegments; x++) {
					for (let y = 0; y < heightSegments; y++) {
						// we use the index array to access the correct indices
						const a = indexArray[y][x];
						const b = indexArray[y + 1][x];
						const c = indexArray[y + 1][x + 1];
						const d = indexArray[y][x + 1]; // faces

						indices.push(a, b, d);
						indices.push(b, c, d); // update group counter

						groupCount += 6;
					}
				} // add a group to the geometry. this will ensure multi material support


				scope.addGroup(groupStart, groupCount, 0); // calculate new start value for groups

				groupStart += groupCount;
			}

			function generateCap(top) {
				// save the index of the first center vertex
				const centerIndexStart = index;
				const uv = new Vector2();
				const vertex = new Vector3();
				let groupCount = 0;
				const radius = top === true ? radiusTop : radiusBottom;
				const sign = top === true ? 1 : -1; // first we generate the center vertex data of the cap.
				// because the geometry needs one set of uvs per face,
				// we must generate a center vertex per face/segment

				for (let x = 1; x <= radialSegments; x++) {
					// vertex
					vertices.push(0, halfHeight * sign, 0); // normal

					normals.push(0, sign, 0); // uv

					uvs.push(0.5, 0.5); // increase index

					index++;
				} // save the index of the last center vertex


				const centerIndexEnd = index; // now we generate the surrounding vertices, normals and uvs

				for (let x = 0; x <= radialSegments; x++) {
					const u = x / radialSegments;
					const theta = u * thetaLength + thetaStart;
					const cosTheta = Math.cos(theta);
					const sinTheta = Math.sin(theta); // vertex

					vertex.x = radius * sinTheta;
					vertex.y = halfHeight * sign;
					vertex.z = radius * cosTheta;
					vertices.push(vertex.x, vertex.y, vertex.z); // normal

					normals.push(0, sign, 0); // uv

					uv.x = cosTheta * 0.5 + 0.5;
					uv.y = sinTheta * 0.5 * sign + 0.5;
					uvs.push(uv.x, uv.y); // increase index

					index++;
				} // generate indices


				for (let x = 0; x < radialSegments; x++) {
					const c = centerIndexStart + x;
					const i = centerIndexEnd + x;

					if (top === true) {
						// face top
						indices.push(i, i + 1, c);
					} else {
						// face bottom
						indices.push(i + 1, i, c);
					}

					groupCount += 3;
				} // add a group to the geometry. this will ensure multi material support


				scope.addGroup(groupStart, groupCount, top === true ? 1 : 2); // calculate new start value for groups

				groupStart += groupCount;
			}
		}

		static fromJSON(data) {
			return new CylinderGeometry(data.radiusTop, data.radiusBottom, data.height, data.radialSegments, data.heightSegments, data.openEnded, data.thetaStart, data.thetaLength);
		}

	}

	class ConeGeometry extends CylinderGeometry {
		constructor(radius = 1, height = 1, radialSegments = 8, heightSegments = 1, openEnded = false, thetaStart = 0, thetaLength = Math.PI * 2) {
			super(0, radius, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength);
			this.type = 'ConeGeometry';
			this.parameters = {
				radius: radius,
				height: height,
				radialSegments: radialSegments,
				heightSegments: heightSegments,
				openEnded: openEnded,
				thetaStart: thetaStart,
				thetaLength: thetaLength
			};
		}

		static fromJSON(data) {
			return new ConeGeometry(data.radius, data.height, data.radialSegments, data.heightSegments, data.openEnded, data.thetaStart, data.thetaLength);
		}

	}

	class PolyhedronGeometry extends BufferGeometry {
		constructor(vertices = [], indices = [], radius = 1, detail = 0) {
			super();
			this.type = 'PolyhedronGeometry';
			this.parameters = {
				vertices: vertices,
				indices: indices,
				radius: radius,
				detail: detail
			}; // default buffer data

			const vertexBuffer = [];
			const uvBuffer = []; // the subdivision creates the vertex buffer data

			subdivide(detail); // all vertices should lie on a conceptual sphere with a given radius

			applyRadius(radius); // finally, create the uv data

			generateUVs(); // build non-indexed geometry

			this.setAttribute('position', new Float32BufferAttribute(vertexBuffer, 3));
			this.setAttribute('normal', new Float32BufferAttribute(vertexBuffer.slice(), 3));
			this.setAttribute('uv', new Float32BufferAttribute(uvBuffer, 2));

			if (detail === 0) {
				this.computeVertexNormals(); // flat normals
			} else {
				this.normalizeNormals(); // smooth normals
			} // helper functions


			function subdivide(detail) {
				const a = new Vector3();
				const b = new Vector3();
				const c = new Vector3(); // iterate over all faces and apply a subdivison with the given detail value

				for (let i = 0; i < indices.length; i += 3) {
					// get the vertices of the face
					getVertexByIndex(indices[i + 0], a);
					getVertexByIndex(indices[i + 1], b);
					getVertexByIndex(indices[i + 2], c); // perform subdivision

					subdivideFace(a, b, c, detail);
				}
			}

			function subdivideFace(a, b, c, detail) {
				const cols = detail + 1; // we use this multidimensional array as a data structure for creating the subdivision

				const v = []; // construct all of the vertices for this subdivision

				for (let i = 0; i <= cols; i++) {
					v[i] = [];
					const aj = a.clone().lerp(c, i / cols);
					const bj = b.clone().lerp(c, i / cols);
					const rows = cols - i;

					for (let j = 0; j <= rows; j++) {
						if (j === 0 && i === cols) {
							v[i][j] = aj;
						} else {
							v[i][j] = aj.clone().lerp(bj, j / rows);
						}
					}
				} // construct all of the faces


				for (let i = 0; i < cols; i++) {
					for (let j = 0; j < 2 * (cols - i) - 1; j++) {
						const k = Math.floor(j / 2);

						if (j % 2 === 0) {
							pushVertex(v[i][k + 1]);
							pushVertex(v[i + 1][k]);
							pushVertex(v[i][k]);
						} else {
							pushVertex(v[i][k + 1]);
							pushVertex(v[i + 1][k + 1]);
							pushVertex(v[i + 1][k]);
						}
					}
				}
			}

			function applyRadius(radius) {
				const vertex = new Vector3(); // iterate over the entire buffer and apply the radius to each vertex

				for (let i = 0; i < vertexBuffer.length; i += 3) {
					vertex.x = vertexBuffer[i + 0];
					vertex.y = vertexBuffer[i + 1];
					vertex.z = vertexBuffer[i + 2];
					vertex.normalize().multiplyScalar(radius);
					vertexBuffer[i + 0] = vertex.x;
					vertexBuffer[i + 1] = vertex.y;
					vertexBuffer[i + 2] = vertex.z;
				}
			}

			function generateUVs() {
				const vertex = new Vector3();

				for (let i = 0; i < vertexBuffer.length; i += 3) {
					vertex.x = vertexBuffer[i + 0];
					vertex.y = vertexBuffer[i + 1];
					vertex.z = vertexBuffer[i + 2];
					const u = azimuth(vertex) / 2 / Math.PI + 0.5;
					const v = inclination(vertex) / Math.PI + 0.5;
					uvBuffer.push(u, 1 - v);
				}

				correctUVs();
				correctSeam();
			}

			function correctSeam() {
				// handle case when face straddles the seam, see #3269
				for (let i = 0; i < uvBuffer.length; i += 6) {
					// uv data of a single face
					const x0 = uvBuffer[i + 0];
					const x1 = uvBuffer[i + 2];
					const x2 = uvBuffer[i + 4];
					const max = Math.max(x0, x1, x2);
					const min = Math.min(x0, x1, x2); // 0.9 is somewhat arbitrary

					if (max > 0.9 && min < 0.1) {
						if (x0 < 0.2) uvBuffer[i + 0] += 1;
						if (x1 < 0.2) uvBuffer[i + 2] += 1;
						if (x2 < 0.2) uvBuffer[i + 4] += 1;
					}
				}
			}

			function pushVertex(vertex) {
				vertexBuffer.push(vertex.x, vertex.y, vertex.z);
			}

			function getVertexByIndex(index, vertex) {
				const stride = index * 3;
				vertex.x = vertices[stride + 0];
				vertex.y = vertices[stride + 1];
				vertex.z = vertices[stride + 2];
			}

			function correctUVs() {
				const a = new Vector3();
				const b = new Vector3();
				const c = new Vector3();
				const centroid = new Vector3();
				const uvA = new Vector2();
				const uvB = new Vector2();
				const uvC = new Vector2();

				for (let i = 0, j = 0; i < vertexBuffer.length; i += 9, j += 6) {
					a.set(vertexBuffer[i + 0], vertexBuffer[i + 1], vertexBuffer[i + 2]);
					b.set(vertexBuffer[i + 3], vertexBuffer[i + 4], vertexBuffer[i + 5]);
					c.set(vertexBuffer[i + 6], vertexBuffer[i + 7], vertexBuffer[i + 8]);
					uvA.set(uvBuffer[j + 0], uvBuffer[j + 1]);
					uvB.set(uvBuffer[j + 2], uvBuffer[j + 3]);
					uvC.set(uvBuffer[j + 4], uvBuffer[j + 5]);
					centroid.copy(a).add(b).add(c).divideScalar(3);
					const azi = azimuth(centroid);
					correctUV(uvA, j + 0, a, azi);
					correctUV(uvB, j + 2, b, azi);
					correctUV(uvC, j + 4, c, azi);
				}
			}

			function correctUV(uv, stride, vector, azimuth) {
				if (azimuth < 0 && uv.x === 1) {
					uvBuffer[stride] = uv.x - 1;
				}

				if (vector.x === 0 && vector.z === 0) {
					uvBuffer[stride] = azimuth / 2 / Math.PI + 0.5;
				}
			} // Angle around the Y axis, counter-clockwise when looking from above.


			function azimuth(vector) {
				return Math.atan2(vector.z, -vector.x);
			} // Angle above the XZ plane.


			function inclination(vector) {
				return Math.atan2(-vector.y, Math.sqrt(vector.x * vector.x + vector.z * vector.z));
			}
		}

		static fromJSON(data) {
			return new PolyhedronGeometry(data.vertices, data.indices, data.radius, data.details);
		}

	}

	class DodecahedronGeometry extends PolyhedronGeometry {
		constructor(radius = 1, detail = 0) {
			const t = (1 + Math.sqrt(5)) / 2;
			const r = 1 / t;
			const vertices = [// (±1, ±1, ±1)
			-1, -1, -1, -1, -1, 1, -1, 1, -1, -1, 1, 1, 1, -1, -1, 1, -1, 1, 1, 1, -1, 1, 1, 1, // (0, ±1/φ, ±φ)
			0, -r, -t, 0, -r, t, 0, r, -t, 0, r, t, // (±1/φ, ±φ, 0)
			-r, -t, 0, -r, t, 0, r, -t, 0, r, t, 0, // (±φ, 0, ±1/φ)
			-t, 0, -r, t, 0, -r, -t, 0, r, t, 0, r];
			const indices = [3, 11, 7, 3, 7, 15, 3, 15, 13, 7, 19, 17, 7, 17, 6, 7, 6, 15, 17, 4, 8, 17, 8, 10, 17, 10, 6, 8, 0, 16, 8, 16, 2, 8, 2, 10, 0, 12, 1, 0, 1, 18, 0, 18, 16, 6, 10, 2, 6, 2, 13, 6, 13, 15, 2, 16, 18, 2, 18, 3, 2, 3, 13, 18, 1, 9, 18, 9, 11, 18, 11, 3, 4, 14, 12, 4, 12, 0, 4, 0, 8, 11, 9, 5, 11, 5, 19, 11, 19, 7, 19, 5, 14, 19, 14, 4, 19, 4, 17, 1, 12, 14, 1, 14, 5, 1, 5, 9];
			super(vertices, indices, radius, detail);
			this.type = 'DodecahedronGeometry';
			this.parameters = {
				radius: radius,
				detail: detail
			};
		}

		static fromJSON(data) {
			return new DodecahedronGeometry(data.radius, data.detail);
		}

	}

	const _v0 = new Vector3();

	const _v1$1 = new Vector3();

	const _normal = new Vector3();

	const _triangle = new Triangle();

	class EdgesGeometry extends BufferGeometry {
		constructor(geometry = null, thresholdAngle = 1) {
			super();
			this.type = 'EdgesGeometry';
			this.parameters = {
				geometry: geometry,
				thresholdAngle: thresholdAngle
			};

			if (geometry !== null) {
				const precisionPoints = 4;
				const precision = Math.pow(10, precisionPoints);
				const thresholdDot = Math.cos(DEG2RAD * thresholdAngle);
				const indexAttr = geometry.getIndex();
				const positionAttr = geometry.getAttribute('position');
				const indexCount = indexAttr ? indexAttr.count : positionAttr.count;
				const indexArr = [0, 0, 0];
				const vertKeys = ['a', 'b', 'c'];
				const hashes = new Array(3);
				const edgeData = {};
				const vertices = [];

				for (let i = 0; i < indexCount; i += 3) {
					if (indexAttr) {
						indexArr[0] = indexAttr.getX(i);
						indexArr[1] = indexAttr.getX(i + 1);
						indexArr[2] = indexAttr.getX(i + 2);
					} else {
						indexArr[0] = i;
						indexArr[1] = i + 1;
						indexArr[2] = i + 2;
					}

					const {
						a,
						b,
						c
					} = _triangle;
					a.fromBufferAttribute(positionAttr, indexArr[0]);
					b.fromBufferAttribute(positionAttr, indexArr[1]);
					c.fromBufferAttribute(positionAttr, indexArr[2]);

					_triangle.getNormal(_normal); // create hashes for the edge from the vertices


					hashes[0] = `${Math.round(a.x * precision)},${Math.round(a.y * precision)},${Math.round(a.z * precision)}`;
					hashes[1] = `${Math.round(b.x * precision)},${Math.round(b.y * precision)},${Math.round(b.z * precision)}`;
					hashes[2] = `${Math.round(c.x * precision)},${Math.round(c.y * precision)},${Math.round(c.z * precision)}`; // skip degenerate triangles

					if (hashes[0] === hashes[1] || hashes[1] === hashes[2] || hashes[2] === hashes[0]) {
						continue;
					} // iterate over every edge


					for (let j = 0; j < 3; j++) {
						// get the first and next vertex making up the edge
						const jNext = (j + 1) % 3;
						const vecHash0 = hashes[j];
						const vecHash1 = hashes[jNext];
						const v0 = _triangle[vertKeys[j]];
						const v1 = _triangle[vertKeys[jNext]];
						const hash = `${vecHash0}_${vecHash1}`;
						const reverseHash = `${vecHash1}_${vecHash0}`;

						if (reverseHash in edgeData && edgeData[reverseHash]) {
							// if we found a sibling edge add it into the vertex array if
							// it meets the angle threshold and delete the edge from the map.
							if (_normal.dot(edgeData[reverseHash].normal) <= thresholdDot) {
								vertices.push(v0.x, v0.y, v0.z);
								vertices.push(v1.x, v1.y, v1.z);
							}

							edgeData[reverseHash] = null;
						} else if (!(hash in edgeData)) {
							// if we've already got an edge here then skip adding a new one
							edgeData[hash] = {
								index0: indexArr[j],
								index1: indexArr[jNext],
								normal: _normal.clone()
							};
						}
					}
				} // iterate over all remaining, unmatched edges and add them to the vertex array


				for (const key in edgeData) {
					if (edgeData[key]) {
						const {
							index0,
							index1
						} = edgeData[key];

						_v0.fromBufferAttribute(positionAttr, index0);

						_v1$1.fromBufferAttribute(positionAttr, index1);

						vertices.push(_v0.x, _v0.y, _v0.z);
						vertices.push(_v1$1.x, _v1$1.y, _v1$1.z);
					}
				}

				this.setAttribute('position', new Float32BufferAttribute(vertices, 3));
			}
		}

	}

	/**
	 * Extensible curve object.
	 *
	 * Some common of curve methods:
	 * .getPoint( t, optionalTarget ), .getTangent( t, optionalTarget )
	 * .getPointAt( u, optionalTarget ), .getTangentAt( u, optionalTarget )
	 * .getPoints(), .getSpacedPoints()
	 * .getLength()
	 * .updateArcLengths()
	 *
	 * This following curves inherit from THREE.Curve:
	 *
	 * -- 2D curves --
	 * THREE.ArcCurve
	 * THREE.CubicBezierCurve
	 * THREE.EllipseCurve
	 * THREE.LineCurve
	 * THREE.QuadraticBezierCurve
	 * THREE.SplineCurve
	 *
	 * -- 3D curves --
	 * THREE.CatmullRomCurve3
	 * THREE.CubicBezierCurve3
	 * THREE.LineCurve3
	 * THREE.QuadraticBezierCurve3
	 *
	 * A series of curves can be represented as a THREE.CurvePath.
	 *
	 **/

	class Curve {
		constructor() {
			this.type = 'Curve';
			this.arcLengthDivisions = 200;
		} // Virtual base class method to overwrite and implement in subclasses
		//	- t [0 .. 1]


		getPoint() {
			console.warn('THREE.Curve: .getPoint() not implemented.');
			return null;
		} // Get point at relative position in curve according to arc length
		// - u [0 .. 1]


		getPointAt(u, optionalTarget) {
			const t = this.getUtoTmapping(u);
			return this.getPoint(t, optionalTarget);
		} // Get sequence of points using getPoint( t )


		getPoints(divisions = 5) {
			const points = [];

			for (let d = 0; d <= divisions; d++) {
				points.push(this.getPoint(d / divisions));
			}

			return points;
		} // Get sequence of points using getPointAt( u )


		getSpacedPoints(divisions = 5) {
			const points = [];

			for (let d = 0; d <= divisions; d++) {
				points.push(this.getPointAt(d / divisions));
			}

			return points;
		} // Get total curve arc length


		getLength() {
			const lengths = this.getLengths();
			return lengths[lengths.length - 1];
		} // Get list of cumulative segment lengths


		getLengths(divisions = this.arcLengthDivisions) {
			if (this.cacheArcLengths && this.cacheArcLengths.length === divisions + 1 && !this.needsUpdate) {
				return this.cacheArcLengths;
			}

			this.needsUpdate = false;
			const cache = [];
			let current,
					last = this.getPoint(0);
			let sum = 0;
			cache.push(0);

			for (let p = 1; p <= divisions; p++) {
				current = this.getPoint(p / divisions);
				sum += current.distanceTo(last);
				cache.push(sum);
				last = current;
			}

			this.cacheArcLengths = cache;
			return cache; // { sums: cache, sum: sum }; Sum is in the last element.
		}

		updateArcLengths() {
			this.needsUpdate = true;
			this.getLengths();
		} // Given u ( 0 .. 1 ), get a t to find p. This gives you points which are equidistant


		getUtoTmapping(u, distance) {
			const arcLengths = this.getLengths();
			let i = 0;
			const il = arcLengths.length;
			let targetArcLength; // The targeted u distance value to get

			if (distance) {
				targetArcLength = distance;
			} else {
				targetArcLength = u * arcLengths[il - 1];
			} // binary search for the index with largest value smaller than target u distance


			let low = 0,
					high = il - 1,
					comparison;

			while (low <= high) {
				i = Math.floor(low + (high - low) / 2); // less likely to overflow, though probably not issue here, JS doesn't really have integers, all numbers are floats

				comparison = arcLengths[i] - targetArcLength;

				if (comparison < 0) {
					low = i + 1;
				} else if (comparison > 0) {
					high = i - 1;
				} else {
					high = i;
					break; // DONE
				}
			}

			i = high;

			if (arcLengths[i] === targetArcLength) {
				return i / (il - 1);
			} // we could get finer grain at lengths, or use simple interpolation between two points


			const lengthBefore = arcLengths[i];
			const lengthAfter = arcLengths[i + 1];
			const segmentLength = lengthAfter - lengthBefore; // determine where we are between the 'before' and 'after' points

			const segmentFraction = (targetArcLength - lengthBefore) / segmentLength; // add that fractional amount to t

			const t = (i + segmentFraction) / (il - 1);
			return t;
		} // Returns a unit vector tangent at t
		// In case any sub curve does not implement its tangent derivation,
		// 2 points a small delta apart will be used to find its gradient
		// which seems to give a reasonable approximation


		getTangent(t, optionalTarget) {
			const delta = 0.0001;
			let t1 = t - delta;
			let t2 = t + delta; // Capping in case of danger

			if (t1 < 0) t1 = 0;
			if (t2 > 1) t2 = 1;
			const pt1 = this.getPoint(t1);
			const pt2 = this.getPoint(t2);
			const tangent = optionalTarget || (pt1.isVector2 ? new Vector2() : new Vector3());
			tangent.copy(pt2).sub(pt1).normalize();
			return tangent;
		}

		getTangentAt(u, optionalTarget) {
			const t = this.getUtoTmapping(u);
			return this.getTangent(t, optionalTarget);
		}

		computeFrenetFrames(segments, closed) {
			// see http://www.cs.indiana.edu/pub/techreports/TR425.pdf
			const normal = new Vector3();
			const tangents = [];
			const normals = [];
			const binormals = [];
			const vec = new Vector3();
			const mat = new Matrix4(); // compute the tangent vectors for each segment on the curve

			for (let i = 0; i <= segments; i++) {
				const u = i / segments;
				tangents[i] = this.getTangentAt(u, new Vector3());
			} // select an initial normal vector perpendicular to the first tangent vector,
			// and in the direction of the minimum tangent xyz component


			normals[0] = new Vector3();
			binormals[0] = new Vector3();
			let min = Number.MAX_VALUE;
			const tx = Math.abs(tangents[0].x);
			const ty = Math.abs(tangents[0].y);
			const tz = Math.abs(tangents[0].z);

			if (tx <= min) {
				min = tx;
				normal.set(1, 0, 0);
			}

			if (ty <= min) {
				min = ty;
				normal.set(0, 1, 0);
			}

			if (tz <= min) {
				normal.set(0, 0, 1);
			}

			vec.crossVectors(tangents[0], normal).normalize();
			normals[0].crossVectors(tangents[0], vec);
			binormals[0].crossVectors(tangents[0], normals[0]); // compute the slowly-varying normal and binormal vectors for each segment on the curve

			for (let i = 1; i <= segments; i++) {
				normals[i] = normals[i - 1].clone();
				binormals[i] = binormals[i - 1].clone();
				vec.crossVectors(tangents[i - 1], tangents[i]);

				if (vec.length() > Number.EPSILON) {
					vec.normalize();
					const theta = Math.acos(clamp(tangents[i - 1].dot(tangents[i]), -1, 1)); // clamp for floating pt errors

					normals[i].applyMatrix4(mat.makeRotationAxis(vec, theta));
				}

				binormals[i].crossVectors(tangents[i], normals[i]);
			} // if the curve is closed, postprocess the vectors so the first and last normal vectors are the same


			if (closed === true) {
				let theta = Math.acos(clamp(normals[0].dot(normals[segments]), -1, 1));
				theta /= segments;

				if (tangents[0].dot(vec.crossVectors(normals[0], normals[segments])) > 0) {
					theta = -theta;
				}

				for (let i = 1; i <= segments; i++) {
					// twist a little...
					normals[i].applyMatrix4(mat.makeRotationAxis(tangents[i], theta * i));
					binormals[i].crossVectors(tangents[i], normals[i]);
				}
			}

			return {
				tangents: tangents,
				normals: normals,
				binormals: binormals
			};
		}

		clone() {
			return new this.constructor().copy(this);
		}

		copy(source) {
			this.arcLengthDivisions = source.arcLengthDivisions;
			return this;
		}

		toJSON() {
			const data = {
				metadata: {
					version: 4.5,
					type: 'Curve',
					generator: 'Curve.toJSON'
				}
			};
			data.arcLengthDivisions = this.arcLengthDivisions;
			data.type = this.type;
			return data;
		}

		fromJSON(json) {
			this.arcLengthDivisions = json.arcLengthDivisions;
			return this;
		}

	}

	class EllipseCurve extends Curve {
		constructor(aX = 0, aY = 0, xRadius = 1, yRadius = 1, aStartAngle = 0, aEndAngle = Math.PI * 2, aClockwise = false, aRotation = 0) {
			super();
			this.type = 'EllipseCurve';
			this.aX = aX;
			this.aY = aY;
			this.xRadius = xRadius;
			this.yRadius = yRadius;
			this.aStartAngle = aStartAngle;
			this.aEndAngle = aEndAngle;
			this.aClockwise = aClockwise;
			this.aRotation = aRotation;
		}

		getPoint(t, optionalTarget) {
			const point = optionalTarget || new Vector2();
			const twoPi = Math.PI * 2;
			let deltaAngle = this.aEndAngle - this.aStartAngle;
			const samePoints = Math.abs(deltaAngle) < Number.EPSILON; // ensures that deltaAngle is 0 .. 2 PI

			while (deltaAngle < 0) deltaAngle += twoPi;

			while (deltaAngle > twoPi) deltaAngle -= twoPi;

			if (deltaAngle < Number.EPSILON) {
				if (samePoints) {
					deltaAngle = 0;
				} else {
					deltaAngle = twoPi;
				}
			}

			if (this.aClockwise === true && !samePoints) {
				if (deltaAngle === twoPi) {
					deltaAngle = -twoPi;
				} else {
					deltaAngle = deltaAngle - twoPi;
				}
			}

			const angle = this.aStartAngle + t * deltaAngle;
			let x = this.aX + this.xRadius * Math.cos(angle);
			let y = this.aY + this.yRadius * Math.sin(angle);

			if (this.aRotation !== 0) {
				const cos = Math.cos(this.aRotation);
				const sin = Math.sin(this.aRotation);
				const tx = x - this.aX;
				const ty = y - this.aY; // Rotate the point about the center of the ellipse.

				x = tx * cos - ty * sin + this.aX;
				y = tx * sin + ty * cos + this.aY;
			}

			return point.set(x, y);
		}

		copy(source) {
			super.copy(source);
			this.aX = source.aX;
			this.aY = source.aY;
			this.xRadius = source.xRadius;
			this.yRadius = source.yRadius;
			this.aStartAngle = source.aStartAngle;
			this.aEndAngle = source.aEndAngle;
			this.aClockwise = source.aClockwise;
			this.aRotation = source.aRotation;
			return this;
		}

		toJSON() {
			const data = super.toJSON();
			data.aX = this.aX;
			data.aY = this.aY;
			data.xRadius = this.xRadius;
			data.yRadius = this.yRadius;
			data.aStartAngle = this.aStartAngle;
			data.aEndAngle = this.aEndAngle;
			data.aClockwise = this.aClockwise;
			data.aRotation = this.aRotation;
			return data;
		}

		fromJSON(json) {
			super.fromJSON(json);
			this.aX = json.aX;
			this.aY = json.aY;
			this.xRadius = json.xRadius;
			this.yRadius = json.yRadius;
			this.aStartAngle = json.aStartAngle;
			this.aEndAngle = json.aEndAngle;
			this.aClockwise = json.aClockwise;
			this.aRotation = json.aRotation;
			return this;
		}

	}

	EllipseCurve.prototype.isEllipseCurve = true;

	class ArcCurve extends EllipseCurve {
		constructor(aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise) {
			super(aX, aY, aRadius, aRadius, aStartAngle, aEndAngle, aClockwise);
			this.type = 'ArcCurve';
		}

	}

	ArcCurve.prototype.isArcCurve = true;

	/**
	 * Centripetal CatmullRom Curve - which is useful for avoiding
	 * cusps and self-intersections in non-uniform catmull rom curves.
	 * http://www.cemyuksel.com/research/catmullrom_param/catmullrom.pdf
	 *
	 * curve.type accepts centripetal(default), chordal and catmullrom
	 * curve.tension is used for catmullrom which defaults to 0.5
	 */

	/*
	Based on an optimized c++ solution in
	 - http://stackoverflow.com/questions/9489736/catmull-rom-curve-with-no-cusps-and-no-self-intersections/
	 - http://ideone.com/NoEbVM

	This CubicPoly class could be used for reusing some variables and calculations,
	but for three.js curve use, it could be possible inlined and flatten into a single function call
	which can be placed in CurveUtils.
	*/

	function CubicPoly() {
		let c0 = 0,
				c1 = 0,
				c2 = 0,
				c3 = 0;
		/*
		 * Compute coefficients for a cubic polynomial
		 *	 p(s) = c0 + c1*s + c2*s^2 + c3*s^3
		 * such that
		 *	 p(0) = x0, p(1) = x1
		 *	and
		 *	 p'(0) = t0, p'(1) = t1.
		 */

		function init(x0, x1, t0, t1) {
			c0 = x0;
			c1 = t0;
			c2 = -3 * x0 + 3 * x1 - 2 * t0 - t1;
			c3 = 2 * x0 - 2 * x1 + t0 + t1;
		}

		return {
			initCatmullRom: function (x0, x1, x2, x3, tension) {
				init(x1, x2, tension * (x2 - x0), tension * (x3 - x1));
			},
			initNonuniformCatmullRom: function (x0, x1, x2, x3, dt0, dt1, dt2) {
				// compute tangents when parameterized in [t1,t2]
				let t1 = (x1 - x0) / dt0 - (x2 - x0) / (dt0 + dt1) + (x2 - x1) / dt1;
				let t2 = (x2 - x1) / dt1 - (x3 - x1) / (dt1 + dt2) + (x3 - x2) / dt2; // rescale tangents for parametrization in [0,1]

				t1 *= dt1;
				t2 *= dt1;
				init(x1, x2, t1, t2);
			},
			calc: function (t) {
				const t2 = t * t;
				const t3 = t2 * t;
				return c0 + c1 * t + c2 * t2 + c3 * t3;
			}
		};
	} //


	const tmp = new Vector3();
	const px = new CubicPoly(),
				py = new CubicPoly(),
				pz = new CubicPoly();

	class CatmullRomCurve3 extends Curve {
		constructor(points = [], closed = false, curveType = 'centripetal', tension = 0.5) {
			super();
			this.type = 'CatmullRomCurve3';
			this.points = points;
			this.closed = closed;
			this.curveType = curveType;
			this.tension = tension;
		}

		getPoint(t, optionalTarget = new Vector3()) {
			const point = optionalTarget;
			const points = this.points;
			const l = points.length;
			const p = (l - (this.closed ? 0 : 1)) * t;
			let intPoint = Math.floor(p);
			let weight = p - intPoint;

			if (this.closed) {
				intPoint += intPoint > 0 ? 0 : (Math.floor(Math.abs(intPoint) / l) + 1) * l;
			} else if (weight === 0 && intPoint === l - 1) {
				intPoint = l - 2;
				weight = 1;
			}

			let p0, p3; // 4 points (p1 & p2 defined below)

			if (this.closed || intPoint > 0) {
				p0 = points[(intPoint - 1) % l];
			} else {
				// extrapolate first point
				tmp.subVectors(points[0], points[1]).add(points[0]);
				p0 = tmp;
			}

			const p1 = points[intPoint % l];
			const p2 = points[(intPoint + 1) % l];

			if (this.closed || intPoint + 2 < l) {
				p3 = points[(intPoint + 2) % l];
			} else {
				// extrapolate last point
				tmp.subVectors(points[l - 1], points[l - 2]).add(points[l - 1]);
				p3 = tmp;
			}

			if (this.curveType === 'centripetal' || this.curveType === 'chordal') {
				// init Centripetal / Chordal Catmull-Rom
				const pow = this.curveType === 'chordal' ? 0.5 : 0.25;
				let dt0 = Math.pow(p0.distanceToSquared(p1), pow);
				let dt1 = Math.pow(p1.distanceToSquared(p2), pow);
				let dt2 = Math.pow(p2.distanceToSquared(p3), pow); // safety check for repeated points

				if (dt1 < 1e-4) dt1 = 1.0;
				if (dt0 < 1e-4) dt0 = dt1;
				if (dt2 < 1e-4) dt2 = dt1;
				px.initNonuniformCatmullRom(p0.x, p1.x, p2.x, p3.x, dt0, dt1, dt2);
				py.initNonuniformCatmullRom(p0.y, p1.y, p2.y, p3.y, dt0, dt1, dt2);
				pz.initNonuniformCatmullRom(p0.z, p1.z, p2.z, p3.z, dt0, dt1, dt2);
			} else if (this.curveType === 'catmullrom') {
				px.initCatmullRom(p0.x, p1.x, p2.x, p3.x, this.tension);
				py.initCatmullRom(p0.y, p1.y, p2.y, p3.y, this.tension);
				pz.initCatmullRom(p0.z, p1.z, p2.z, p3.z, this.tension);
			}

			point.set(px.calc(weight), py.calc(weight), pz.calc(weight));
			return point;
		}

		copy(source) {
			super.copy(source);
			this.points = [];

			for (let i = 0, l = source.points.length; i < l; i++) {
				const point = source.points[i];
				this.points.push(point.clone());
			}

			this.closed = source.closed;
			this.curveType = source.curveType;
			this.tension = source.tension;
			return this;
		}

		toJSON() {
			const data = super.toJSON();
			data.points = [];

			for (let i = 0, l = this.points.length; i < l; i++) {
				const point = this.points[i];
				data.points.push(point.toArray());
			}

			data.closed = this.closed;
			data.curveType = this.curveType;
			data.tension = this.tension;
			return data;
		}

		fromJSON(json) {
			super.fromJSON(json);
			this.points = [];

			for (let i = 0, l = json.points.length; i < l; i++) {
				const point = json.points[i];
				this.points.push(new Vector3().fromArray(point));
			}

			this.closed = json.closed;
			this.curveType = json.curveType;
			this.tension = json.tension;
			return this;
		}

	}

	CatmullRomCurve3.prototype.isCatmullRomCurve3 = true;

	/**
	 * Bezier Curves formulas obtained from
	 * http://en.wikipedia.org/wiki/Bézier_curve
	 */
	function CatmullRom(t, p0, p1, p2, p3) {
		const v0 = (p2 - p0) * 0.5;
		const v1 = (p3 - p1) * 0.5;
		const t2 = t * t;
		const t3 = t * t2;
		return (2 * p1 - 2 * p2 + v0 + v1) * t3 + (-3 * p1 + 3 * p2 - 2 * v0 - v1) * t2 + v0 * t + p1;
	} //


	function QuadraticBezierP0(t, p) {
		const k = 1 - t;
		return k * k * p;
	}

	function QuadraticBezierP1(t, p) {
		return 2 * (1 - t) * t * p;
	}

	function QuadraticBezierP2(t, p) {
		return t * t * p;
	}

	function QuadraticBezier(t, p0, p1, p2) {
		return QuadraticBezierP0(t, p0) + QuadraticBezierP1(t, p1) + QuadraticBezierP2(t, p2);
	} //


	function CubicBezierP0(t, p) {
		const k = 1 - t;
		return k * k * k * p;
	}

	function CubicBezierP1(t, p) {
		const k = 1 - t;
		return 3 * k * k * t * p;
	}

	function CubicBezierP2(t, p) {
		return 3 * (1 - t) * t * t * p;
	}

	function CubicBezierP3(t, p) {
		return t * t * t * p;
	}

	function CubicBezier(t, p0, p1, p2, p3) {
		return CubicBezierP0(t, p0) + CubicBezierP1(t, p1) + CubicBezierP2(t, p2) + CubicBezierP3(t, p3);
	}

	class CubicBezierCurve extends Curve {
		constructor(v0 = new Vector2(), v1 = new Vector2(), v2 = new Vector2(), v3 = new Vector2()) {
			super();
			this.type = 'CubicBezierCurve';
			this.v0 = v0;
			this.v1 = v1;
			this.v2 = v2;
			this.v3 = v3;
		}

		getPoint(t, optionalTarget = new Vector2()) {
			const point = optionalTarget;
			const v0 = this.v0,
						v1 = this.v1,
						v2 = this.v2,
						v3 = this.v3;
			point.set(CubicBezier(t, v0.x, v1.x, v2.x, v3.x), CubicBezier(t, v0.y, v1.y, v2.y, v3.y));
			return point;
		}

		copy(source) {
			super.copy(source);
			this.v0.copy(source.v0);
			this.v1.copy(source.v1);
			this.v2.copy(source.v2);
			this.v3.copy(source.v3);
			return this;
		}

		toJSON() {
			const data = super.toJSON();
			data.v0 = this.v0.toArray();
			data.v1 = this.v1.toArray();
			data.v2 = this.v2.toArray();
			data.v3 = this.v3.toArray();
			return data;
		}

		fromJSON(json) {
			super.fromJSON(json);
			this.v0.fromArray(json.v0);
			this.v1.fromArray(json.v1);
			this.v2.fromArray(json.v2);
			this.v3.fromArray(json.v3);
			return this;
		}

	}

	CubicBezierCurve.prototype.isCubicBezierCurve = true;

	class CubicBezierCurve3 extends Curve {
		constructor(v0 = new Vector3(), v1 = new Vector3(), v2 = new Vector3(), v3 = new Vector3()) {
			super();
			this.type = 'CubicBezierCurve3';
			this.v0 = v0;
			this.v1 = v1;
			this.v2 = v2;
			this.v3 = v3;
		}

		getPoint(t, optionalTarget = new Vector3()) {
			const point = optionalTarget;
			const v0 = this.v0,
						v1 = this.v1,
						v2 = this.v2,
						v3 = this.v3;
			point.set(CubicBezier(t, v0.x, v1.x, v2.x, v3.x), CubicBezier(t, v0.y, v1.y, v2.y, v3.y), CubicBezier(t, v0.z, v1.z, v2.z, v3.z));
			return point;
		}

		copy(source) {
			super.copy(source);
			this.v0.copy(source.v0);
			this.v1.copy(source.v1);
			this.v2.copy(source.v2);
			this.v3.copy(source.v3);
			return this;
		}

		toJSON() {
			const data = super.toJSON();
			data.v0 = this.v0.toArray();
			data.v1 = this.v1.toArray();
			data.v2 = this.v2.toArray();
			data.v3 = this.v3.toArray();
			return data;
		}

		fromJSON(json) {
			super.fromJSON(json);
			this.v0.fromArray(json.v0);
			this.v1.fromArray(json.v1);
			this.v2.fromArray(json.v2);
			this.v3.fromArray(json.v3);
			return this;
		}

	}

	CubicBezierCurve3.prototype.isCubicBezierCurve3 = true;

	class LineCurve extends Curve {
		constructor(v1 = new Vector2(), v2 = new Vector2()) {
			super();
			this.type = 'LineCurve';
			this.v1 = v1;
			this.v2 = v2;
		}

		getPoint(t, optionalTarget = new Vector2()) {
			const point = optionalTarget;

			if (t === 1) {
				point.copy(this.v2);
			} else {
				point.copy(this.v2).sub(this.v1);
				point.multiplyScalar(t).add(this.v1);
			}

			return point;
		} // Line curve is linear, so we can overwrite default getPointAt


		getPointAt(u, optionalTarget) {
			return this.getPoint(u, optionalTarget);
		}

		getTangent(t, optionalTarget) {
			const tangent = optionalTarget || new Vector2();
			tangent.copy(this.v2).sub(this.v1).normalize();
			return tangent;
		}

		copy(source) {
			super.copy(source);
			this.v1.copy(source.v1);
			this.v2.copy(source.v2);
			return this;
		}

		toJSON() {
			const data = super.toJSON();
			data.v1 = this.v1.toArray();
			data.v2 = this.v2.toArray();
			return data;
		}

		fromJSON(json) {
			super.fromJSON(json);
			this.v1.fromArray(json.v1);
			this.v2.fromArray(json.v2);
			return this;
		}

	}

	LineCurve.prototype.isLineCurve = true;

	class LineCurve3 extends Curve {
		constructor(v1 = new Vector3(), v2 = new Vector3()) {
			super();
			this.type = 'LineCurve3';
			this.isLineCurve3 = true;
			this.v1 = v1;
			this.v2 = v2;
		}

		getPoint(t, optionalTarget = new Vector3()) {
			const point = optionalTarget;

			if (t === 1) {
				point.copy(this.v2);
			} else {
				point.copy(this.v2).sub(this.v1);
				point.multiplyScalar(t).add(this.v1);
			}

			return point;
		} // Line curve is linear, so we can overwrite default getPointAt


		getPointAt(u, optionalTarget) {
			return this.getPoint(u, optionalTarget);
		}

		copy(source) {
			super.copy(source);
			this.v1.copy(source.v1);
			this.v2.copy(source.v2);
			return this;
		}

		toJSON() {
			const data = super.toJSON();
			data.v1 = this.v1.toArray();
			data.v2 = this.v2.toArray();
			return data;
		}

		fromJSON(json) {
			super.fromJSON(json);
			this.v1.fromArray(json.v1);
			this.v2.fromArray(json.v2);
			return this;
		}

	}

	class QuadraticBezierCurve extends Curve {
		constructor(v0 = new Vector2(), v1 = new Vector2(), v2 = new Vector2()) {
			super();
			this.type = 'QuadraticBezierCurve';
			this.v0 = v0;
			this.v1 = v1;
			this.v2 = v2;
		}

		getPoint(t, optionalTarget = new Vector2()) {
			const point = optionalTarget;
			const v0 = this.v0,
						v1 = this.v1,
						v2 = this.v2;
			point.set(QuadraticBezier(t, v0.x, v1.x, v2.x), QuadraticBezier(t, v0.y, v1.y, v2.y));
			return point;
		}

		copy(source) {
			super.copy(source);
			this.v0.copy(source.v0);
			this.v1.copy(source.v1);
			this.v2.copy(source.v2);
			return this;
		}

		toJSON() {
			const data = super.toJSON();
			data.v0 = this.v0.toArray();
			data.v1 = this.v1.toArray();
			data.v2 = this.v2.toArray();
			return data;
		}

		fromJSON(json) {
			super.fromJSON(json);
			this.v0.fromArray(json.v0);
			this.v1.fromArray(json.v1);
			this.v2.fromArray(json.v2);
			return this;
		}

	}

	QuadraticBezierCurve.prototype.isQuadraticBezierCurve = true;

	class QuadraticBezierCurve3 extends Curve {
		constructor(v0 = new Vector3(), v1 = new Vector3(), v2 = new Vector3()) {
			super();
			this.type = 'QuadraticBezierCurve3';
			this.v0 = v0;
			this.v1 = v1;
			this.v2 = v2;
		}

		getPoint(t, optionalTarget = new Vector3()) {
			const point = optionalTarget;
			const v0 = this.v0,
						v1 = this.v1,
						v2 = this.v2;
			point.set(QuadraticBezier(t, v0.x, v1.x, v2.x), QuadraticBezier(t, v0.y, v1.y, v2.y), QuadraticBezier(t, v0.z, v1.z, v2.z));
			return point;
		}

		copy(source) {
			super.copy(source);
			this.v0.copy(source.v0);
			this.v1.copy(source.v1);
			this.v2.copy(source.v2);
			return this;
		}

		toJSON() {
			const data = super.toJSON();
			data.v0 = this.v0.toArray();
			data.v1 = this.v1.toArray();
			data.v2 = this.v2.toArray();
			return data;
		}

		fromJSON(json) {
			super.fromJSON(json);
			this.v0.fromArray(json.v0);
			this.v1.fromArray(json.v1);
			this.v2.fromArray(json.v2);
			return this;
		}

	}

	QuadraticBezierCurve3.prototype.isQuadraticBezierCurve3 = true;

	class SplineCurve extends Curve {
		constructor(points = []) {
			super();
			this.type = 'SplineCurve';
			this.points = points;
		}

		getPoint(t, optionalTarget = new Vector2()) {
			const point = optionalTarget;
			const points = this.points;
			const p = (points.length - 1) * t;
			const intPoint = Math.floor(p);
			const weight = p - intPoint;
			const p0 = points[intPoint === 0 ? intPoint : intPoint - 1];
			const p1 = points[intPoint];
			const p2 = points[intPoint > points.length - 2 ? points.length - 1 : intPoint + 1];
			const p3 = points[intPoint > points.length - 3 ? points.length - 1 : intPoint + 2];
			point.set(CatmullRom(weight, p0.x, p1.x, p2.x, p3.x), CatmullRom(weight, p0.y, p1.y, p2.y, p3.y));
			return point;
		}

		copy(source) {
			super.copy(source);
			this.points = [];

			for (let i = 0, l = source.points.length; i < l; i++) {
				const point = source.points[i];
				this.points.push(point.clone());
			}

			return this;
		}

		toJSON() {
			const data = super.toJSON();
			data.points = [];

			for (let i = 0, l = this.points.length; i < l; i++) {
				const point = this.points[i];
				data.points.push(point.toArray());
			}

			return data;
		}

		fromJSON(json) {
			super.fromJSON(json);
			this.points = [];

			for (let i = 0, l = json.points.length; i < l; i++) {
				const point = json.points[i];
				this.points.push(new Vector2().fromArray(point));
			}

			return this;
		}

	}

	SplineCurve.prototype.isSplineCurve = true;

	var Curves = /*#__PURE__*/Object.freeze({
		__proto__: null,
		ArcCurve: ArcCurve,
		CatmullRomCurve3: CatmullRomCurve3,
		CubicBezierCurve: CubicBezierCurve,
		CubicBezierCurve3: CubicBezierCurve3,
		EllipseCurve: EllipseCurve,
		LineCurve: LineCurve,
		LineCurve3: LineCurve3,
		QuadraticBezierCurve: QuadraticBezierCurve,
		QuadraticBezierCurve3: QuadraticBezierCurve3,
		SplineCurve: SplineCurve
	});

	/**************************************************************
	 *	Curved Path - a curve path is simply a array of connected
	 *	curves, but retains the api of a curve
	 **************************************************************/

	class CurvePath extends Curve {
		constructor() {
			super();
			this.type = 'CurvePath';
			this.curves = [];
			this.autoClose = false; // Automatically closes the path
		}

		add(curve) {
			this.curves.push(curve);
		}

		closePath() {
			// Add a line curve if start and end of lines are not connected
			const startPoint = this.curves[0].getPoint(0);
			const endPoint = this.curves[this.curves.length - 1].getPoint(1);

			if (!startPoint.equals(endPoint)) {
				this.curves.push(new LineCurve(endPoint, startPoint));
			}
		} // To get accurate point with reference to
		// entire path distance at time t,
		// following has to be done:
		// 1. Length of each sub path have to be known
		// 2. Locate and identify type of curve
		// 3. Get t for the curve
		// 4. Return curve.getPointAt(t')


		getPoint(t, optionalTarget) {
			const d = t * this.getLength();
			const curveLengths = this.getCurveLengths();
			let i = 0; // To think about boundaries points.

			while (i < curveLengths.length) {
				if (curveLengths[i] >= d) {
					const diff = curveLengths[i] - d;
					const curve = this.curves[i];
					const segmentLength = curve.getLength();
					const u = segmentLength === 0 ? 0 : 1 - diff / segmentLength;
					return curve.getPointAt(u, optionalTarget);
				}

				i++;
			}

			return null; // loop where sum != 0, sum > d , sum+1 <d
		} // We cannot use the default THREE.Curve getPoint() with getLength() because in
		// THREE.Curve, getLength() depends on getPoint() but in THREE.CurvePath
		// getPoint() depends on getLength


		getLength() {
			const lens = this.getCurveLengths();
			return lens[lens.length - 1];
		} // cacheLengths must be recalculated.


		updateArcLengths() {
			this.needsUpdate = true;
			this.cacheLengths = null;
			this.getCurveLengths();
		} // Compute lengths and cache them
		// We cannot overwrite getLengths() because UtoT mapping uses it.


		getCurveLengths() {
			// We use cache values if curves and cache array are same length
			if (this.cacheLengths && this.cacheLengths.length === this.curves.length) {
				return this.cacheLengths;
			} // Get length of sub-curve
			// Push sums into cached array


			const lengths = [];
			let sums = 0;

			for (let i = 0, l = this.curves.length; i < l; i++) {
				sums += this.curves[i].getLength();
				lengths.push(sums);
			}

			this.cacheLengths = lengths;
			return lengths;
		}

		getSpacedPoints(divisions = 40) {
			const points = [];

			for (let i = 0; i <= divisions; i++) {
				points.push(this.getPoint(i / divisions));
			}

			if (this.autoClose) {
				points.push(points[0]);
			}

			return points;
		}

		getPoints(divisions = 12) {
			const points = [];
			let last;

			for (let i = 0, curves = this.curves; i < curves.length; i++) {
				const curve = curves[i];
				const resolution = curve && curve.isEllipseCurve ? divisions * 2 : curve && (curve.isLineCurve || curve.isLineCurve3) ? 1 : curve && curve.isSplineCurve ? divisions * curve.points.length : divisions;
				const pts = curve.getPoints(resolution);

				for (let j = 0; j < pts.length; j++) {
					const point = pts[j];
					if (last && last.equals(point)) continue; // ensures no consecutive points are duplicates

					points.push(point);
					last = point;
				}
			}

			if (this.autoClose && points.length > 1 && !points[points.length - 1].equals(points[0])) {
				points.push(points[0]);
			}

			return points;
		}

		copy(source) {
			super.copy(source);
			this.curves = [];

			for (let i = 0, l = source.curves.length; i < l; i++) {
				const curve = source.curves[i];
				this.curves.push(curve.clone());
			}

			this.autoClose = source.autoClose;
			return this;
		}

		toJSON() {
			const data = super.toJSON();
			data.autoClose = this.autoClose;
			data.curves = [];

			for (let i = 0, l = this.curves.length; i < l; i++) {
				const curve = this.curves[i];
				data.curves.push(curve.toJSON());
			}

			return data;
		}

		fromJSON(json) {
			super.fromJSON(json);
			this.autoClose = json.autoClose;
			this.curves = [];

			for (let i = 0, l = json.curves.length; i < l; i++) {
				const curve = json.curves[i];
				this.curves.push(new Curves[curve.type]().fromJSON(curve));
			}

			return this;
		}

	}

	class Path extends CurvePath {
		constructor(points) {
			super();
			this.type = 'Path';
			this.currentPoint = new Vector2();

			if (points) {
				this.setFromPoints(points);
			}
		}

		setFromPoints(points) {
			this.moveTo(points[0].x, points[0].y);

			for (let i = 1, l = points.length; i < l; i++) {
				this.lineTo(points[i].x, points[i].y);
			}

			return this;
		}

		moveTo(x, y) {
			this.currentPoint.set(x, y); // TODO consider referencing vectors instead of copying?

			return this;
		}

		lineTo(x, y) {
			const curve = new LineCurve(this.currentPoint.clone(), new Vector2(x, y));
			this.curves.push(curve);
			this.currentPoint.set(x, y);
			return this;
		}

		quadraticCurveTo(aCPx, aCPy, aX, aY) {
			const curve = new QuadraticBezierCurve(this.currentPoint.clone(), new Vector2(aCPx, aCPy), new Vector2(aX, aY));
			this.curves.push(curve);
			this.currentPoint.set(aX, aY);
			return this;
		}

		bezierCurveTo(aCP1x, aCP1y, aCP2x, aCP2y, aX, aY) {
			const curve = new CubicBezierCurve(this.currentPoint.clone(), new Vector2(aCP1x, aCP1y), new Vector2(aCP2x, aCP2y), new Vector2(aX, aY));
			this.curves.push(curve);
			this.currentPoint.set(aX, aY);
			return this;
		}

		splineThru(pts
		/*Array of Vector*/
		) {
			const npts = [this.currentPoint.clone()].concat(pts);
			const curve = new SplineCurve(npts);
			this.curves.push(curve);
			this.currentPoint.copy(pts[pts.length - 1]);
			return this;
		}

		arc(aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise) {
			const x0 = this.currentPoint.x;
			const y0 = this.currentPoint.y;
			this.absarc(aX + x0, aY + y0, aRadius, aStartAngle, aEndAngle, aClockwise);
			return this;
		}

		absarc(aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise) {
			this.absellipse(aX, aY, aRadius, aRadius, aStartAngle, aEndAngle, aClockwise);
			return this;
		}

		ellipse(aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation) {
			const x0 = this.currentPoint.x;
			const y0 = this.currentPoint.y;
			this.absellipse(aX + x0, aY + y0, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation);
			return this;
		}

		absellipse(aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation) {
			const curve = new EllipseCurve(aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation);

			if (this.curves.length > 0) {
				// if a previous curve is present, attempt to join
				const firstPoint = curve.getPoint(0);

				if (!firstPoint.equals(this.currentPoint)) {
					this.lineTo(firstPoint.x, firstPoint.y);
				}
			}

			this.curves.push(curve);
			const lastPoint = curve.getPoint(1);
			this.currentPoint.copy(lastPoint);
			return this;
		}

		copy(source) {
			super.copy(source);
			this.currentPoint.copy(source.currentPoint);
			return this;
		}

		toJSON() {
			const data = super.toJSON();
			data.currentPoint = this.currentPoint.toArray();
			return data;
		}

		fromJSON(json) {
			super.fromJSON(json);
			this.currentPoint.fromArray(json.currentPoint);
			return this;
		}

	}

	class Shape extends Path {
		constructor(points) {
			super(points);
			this.uuid = generateUUID();
			this.type = 'Shape';
			this.holes = [];
		}

		getPointsHoles(divisions) {
			const holesPts = [];

			for (let i = 0, l = this.holes.length; i < l; i++) {
				holesPts[i] = this.holes[i].getPoints(divisions);
			}

			return holesPts;
		} // get points of shape and holes (keypoints based on segments parameter)


		extractPoints(divisions) {
			return {
				shape: this.getPoints(divisions),
				holes: this.getPointsHoles(divisions)
			};
		}

		copy(source) {
			super.copy(source);
			this.holes = [];

			for (let i = 0, l = source.holes.length; i < l; i++) {
				const hole = source.holes[i];
				this.holes.push(hole.clone());
			}

			return this;
		}

		toJSON() {
			const data = super.toJSON();
			data.uuid = this.uuid;
			data.holes = [];

			for (let i = 0, l = this.holes.length; i < l; i++) {
				const hole = this.holes[i];
				data.holes.push(hole.toJSON());
			}

			return data;
		}

		fromJSON(json) {
			super.fromJSON(json);
			this.uuid = json.uuid;
			this.holes = [];

			for (let i = 0, l = json.holes.length; i < l; i++) {
				const hole = json.holes[i];
				this.holes.push(new Path().fromJSON(hole));
			}

			return this;
		}

	}

	/**
	 * Port from https://github.com/mapbox/earcut (v2.2.2)
	 */
	const Earcut = {
		triangulate: function (data, holeIndices, dim = 2) {
			const hasHoles = holeIndices && holeIndices.length;
			const outerLen = hasHoles ? holeIndices[0] * dim : data.length;
			let outerNode = linkedList(data, 0, outerLen, dim, true);
			const triangles = [];
			if (!outerNode || outerNode.next === outerNode.prev) return triangles;
			let minX, minY, maxX, maxY, x, y, invSize;
			if (hasHoles) outerNode = eliminateHoles(data, holeIndices, outerNode, dim); // if the shape is not too simple, we'll use z-order curve hash later; calculate polygon bbox

			if (data.length > 80 * dim) {
				minX = maxX = data[0];
				minY = maxY = data[1];

				for (let i = dim; i < outerLen; i += dim) {
					x = data[i];
					y = data[i + 1];
					if (x < minX) minX = x;
					if (y < minY) minY = y;
					if (x > maxX) maxX = x;
					if (y > maxY) maxY = y;
				} // minX, minY and invSize are later used to transform coords into integers for z-order calculation


				invSize = Math.max(maxX - minX, maxY - minY);
				invSize = invSize !== 0 ? 1 / invSize : 0;
			}

			earcutLinked(outerNode, triangles, dim, minX, minY, invSize);
			return triangles;
		}
	}; // create a circular doubly linked list from polygon points in the specified winding order

	function linkedList(data, start, end, dim, clockwise) {
		let i, last;

		if (clockwise === signedArea(data, start, end, dim) > 0) {
			for (i = start; i < end; i += dim) last = insertNode(i, data[i], data[i + 1], last);
		} else {
			for (i = end - dim; i >= start; i -= dim) last = insertNode(i, data[i], data[i + 1], last);
		}

		if (last && equals(last, last.next)) {
			removeNode(last);
			last = last.next;
		}

		return last;
	} // eliminate colinear or duplicate points


	function filterPoints(start, end) {
		if (!start) return start;
		if (!end) end = start;
		let p = start,
				again;

		do {
			again = false;

			if (!p.steiner && (equals(p, p.next) || area(p.prev, p, p.next) === 0)) {
				removeNode(p);
				p = end = p.prev;
				if (p === p.next) break;
				again = true;
			} else {
				p = p.next;
			}
		} while (again || p !== end);

		return end;
	} // main ear slicing loop which triangulates a polygon (given as a linked list)


	function earcutLinked(ear, triangles, dim, minX, minY, invSize, pass) {
		if (!ear) return; // interlink polygon nodes in z-order

		if (!pass && invSize) indexCurve(ear, minX, minY, invSize);
		let stop = ear,
				prev,
				next; // iterate through ears, slicing them one by one

		while (ear.prev !== ear.next) {
			prev = ear.prev;
			next = ear.next;

			if (invSize ? isEarHashed(ear, minX, minY, invSize) : isEar(ear)) {
				// cut off the triangle
				triangles.push(prev.i / dim);
				triangles.push(ear.i / dim);
				triangles.push(next.i / dim);
				removeNode(ear); // skipping the next vertex leads to less sliver triangles

				ear = next.next;
				stop = next.next;
				continue;
			}

			ear = next; // if we looped through the whole remaining polygon and can't find any more ears

			if (ear === stop) {
				// try filtering points and slicing again
				if (!pass) {
					earcutLinked(filterPoints(ear), triangles, dim, minX, minY, invSize, 1); // if this didn't work, try curing all small self-intersections locally
				} else if (pass === 1) {
					ear = cureLocalIntersections(filterPoints(ear), triangles, dim);
					earcutLinked(ear, triangles, dim, minX, minY, invSize, 2); // as a last resort, try splitting the remaining polygon into two
				} else if (pass === 2) {
					splitEarcut(ear, triangles, dim, minX, minY, invSize);
				}

				break;
			}
		}
	} // check whether a polygon node forms a valid ear with adjacent nodes


	function isEar(ear) {
		const a = ear.prev,
					b = ear,
					c = ear.next;
		if (area(a, b, c) >= 0) return false; // reflex, can't be an ear
		// now make sure we don't have other points inside the potential ear

		let p = ear.next.next;

		while (p !== ear.prev) {
			if (pointInTriangle(a.x, a.y, b.x, b.y, c.x, c.y, p.x, p.y) && area(p.prev, p, p.next) >= 0) return false;
			p = p.next;
		}

		return true;
	}

	function isEarHashed(ear, minX, minY, invSize) {
		const a = ear.prev,
					b = ear,
					c = ear.next;
		if (area(a, b, c) >= 0) return false; // reflex, can't be an ear
		// triangle bbox; min & max are calculated like this for speed

		const minTX = a.x < b.x ? a.x < c.x ? a.x : c.x : b.x < c.x ? b.x : c.x,
					minTY = a.y < b.y ? a.y < c.y ? a.y : c.y : b.y < c.y ? b.y : c.y,
					maxTX = a.x > b.x ? a.x > c.x ? a.x : c.x : b.x > c.x ? b.x : c.x,
					maxTY = a.y > b.y ? a.y > c.y ? a.y : c.y : b.y > c.y ? b.y : c.y; // z-order range for the current triangle bbox;

		const minZ = zOrder(minTX, minTY, minX, minY, invSize),
					maxZ = zOrder(maxTX, maxTY, minX, minY, invSize);
		let p = ear.prevZ,
				n = ear.nextZ; // look for points inside the triangle in both directions

		while (p && p.z >= minZ && n && n.z <= maxZ) {
			if (p !== ear.prev && p !== ear.next && pointInTriangle(a.x, a.y, b.x, b.y, c.x, c.y, p.x, p.y) && area(p.prev, p, p.next) >= 0) return false;
			p = p.prevZ;
			if (n !== ear.prev && n !== ear.next && pointInTriangle(a.x, a.y, b.x, b.y, c.x, c.y, n.x, n.y) && area(n.prev, n, n.next) >= 0) return false;
			n = n.nextZ;
		} // look for remaining points in decreasing z-order


		while (p && p.z >= minZ) {
			if (p !== ear.prev && p !== ear.next && pointInTriangle(a.x, a.y, b.x, b.y, c.x, c.y, p.x, p.y) && area(p.prev, p, p.next) >= 0) return false;
			p = p.prevZ;
		} // look for remaining points in increasing z-order


		while (n && n.z <= maxZ) {
			if (n !== ear.prev && n !== ear.next && pointInTriangle(a.x, a.y, b.x, b.y, c.x, c.y, n.x, n.y) && area(n.prev, n, n.next) >= 0) return false;
			n = n.nextZ;
		}

		return true;
	} // go through all polygon nodes and cure small local self-intersections


	function cureLocalIntersections(start, triangles, dim) {
		let p = start;

		do {
			const a = p.prev,
						b = p.next.next;

			if (!equals(a, b) && intersects(a, p, p.next, b) && locallyInside(a, b) && locallyInside(b, a)) {
				triangles.push(a.i / dim);
				triangles.push(p.i / dim);
				triangles.push(b.i / dim); // remove two nodes involved

				removeNode(p);
				removeNode(p.next);
				p = start = b;
			}

			p = p.next;
		} while (p !== start);

		return filterPoints(p);
	} // try splitting polygon into two and triangulate them independently


	function splitEarcut(start, triangles, dim, minX, minY, invSize) {
		// look for a valid diagonal that divides the polygon into two
		let a = start;

		do {
			let b = a.next.next;

			while (b !== a.prev) {
				if (a.i !== b.i && isValidDiagonal(a, b)) {
					// split the polygon in two by the diagonal
					let c = splitPolygon(a, b); // filter colinear points around the cuts

					a = filterPoints(a, a.next);
					c = filterPoints(c, c.next); // run earcut on each half

					earcutLinked(a, triangles, dim, minX, minY, invSize);
					earcutLinked(c, triangles, dim, minX, minY, invSize);
					return;
				}

				b = b.next;
			}

			a = a.next;
		} while (a !== start);
	} // link every hole into the outer loop, producing a single-ring polygon without holes


	function eliminateHoles(data, holeIndices, outerNode, dim) {
		const queue = [];
		let i, len, start, end, list;

		for (i = 0, len = holeIndices.length; i < len; i++) {
			start = holeIndices[i] * dim;
			end = i < len - 1 ? holeIndices[i + 1] * dim : data.length;
			list = linkedList(data, start, end, dim, false);
			if (list === list.next) list.steiner = true;
			queue.push(getLeftmost(list));
		}

		queue.sort(compareX); // process holes from left to right

		for (i = 0; i < queue.length; i++) {
			eliminateHole(queue[i], outerNode);
			outerNode = filterPoints(outerNode, outerNode.next);
		}

		return outerNode;
	}

	function compareX(a, b) {
		return a.x - b.x;
	} // find a bridge between vertices that connects hole with an outer ring and and link it


	function eliminateHole(hole, outerNode) {
		outerNode = findHoleBridge(hole, outerNode);

		if (outerNode) {
			const b = splitPolygon(outerNode, hole); // filter collinear points around the cuts

			filterPoints(outerNode, outerNode.next);
			filterPoints(b, b.next);
		}
	} // David Eberly's algorithm for finding a bridge between hole and outer polygon


	function findHoleBridge(hole, outerNode) {
		let p = outerNode;
		const hx = hole.x;
		const hy = hole.y;
		let qx = -Infinity,
				m; // find a segment intersected by a ray from the hole's leftmost point to the left;
		// segment's endpoint with lesser x will be potential connection point

		do {
			if (hy <= p.y && hy >= p.next.y && p.next.y !== p.y) {
				const x = p.x + (hy - p.y) * (p.next.x - p.x) / (p.next.y - p.y);

				if (x <= hx && x > qx) {
					qx = x;

					if (x === hx) {
						if (hy === p.y) return p;
						if (hy === p.next.y) return p.next;
					}

					m = p.x < p.next.x ? p : p.next;
				}
			}

			p = p.next;
		} while (p !== outerNode);

		if (!m) return null;
		if (hx === qx) return m; // hole touches outer segment; pick leftmost endpoint
		// look for points inside the triangle of hole point, segment intersection and endpoint;
		// if there are no points found, we have a valid connection;
		// otherwise choose the point of the minimum angle with the ray as connection point

		const stop = m,
					mx = m.x,
					my = m.y;
		let tanMin = Infinity,
				tan;
		p = m;

		do {
			if (hx >= p.x && p.x >= mx && hx !== p.x && pointInTriangle(hy < my ? hx : qx, hy, mx, my, hy < my ? qx : hx, hy, p.x, p.y)) {
				tan = Math.abs(hy - p.y) / (hx - p.x); // tangential

				if (locallyInside(p, hole) && (tan < tanMin || tan === tanMin && (p.x > m.x || p.x === m.x && sectorContainsSector(m, p)))) {
					m = p;
					tanMin = tan;
				}
			}

			p = p.next;
		} while (p !== stop);

		return m;
	} // whether sector in vertex m contains sector in vertex p in the same coordinates


	function sectorContainsSector(m, p) {
		return area(m.prev, m, p.prev) < 0 && area(p.next, m, m.next) < 0;
	} // interlink polygon nodes in z-order


	function indexCurve(start, minX, minY, invSize) {
		let p = start;

		do {
			if (p.z === null) p.z = zOrder(p.x, p.y, minX, minY, invSize);
			p.prevZ = p.prev;
			p.nextZ = p.next;
			p = p.next;
		} while (p !== start);

		p.prevZ.nextZ = null;
		p.prevZ = null;
		sortLinked(p);
	} // Simon Tatham's linked list merge sort algorithm
	// http://www.chiark.greenend.org.uk/~sgtatham/algorithms/listsort.html


	function sortLinked(list) {
		let i,
				p,
				q,
				e,
				tail,
				numMerges,
				pSize,
				qSize,
				inSize = 1;

		do {
			p = list;
			list = null;
			tail = null;
			numMerges = 0;

			while (p) {
				numMerges++;
				q = p;
				pSize = 0;

				for (i = 0; i < inSize; i++) {
					pSize++;
					q = q.nextZ;
					if (!q) break;
				}

				qSize = inSize;

				while (pSize > 0 || qSize > 0 && q) {
					if (pSize !== 0 && (qSize === 0 || !q || p.z <= q.z)) {
						e = p;
						p = p.nextZ;
						pSize--;
					} else {
						e = q;
						q = q.nextZ;
						qSize--;
					}

					if (tail) tail.nextZ = e;else list = e;
					e.prevZ = tail;
					tail = e;
				}

				p = q;
			}

			tail.nextZ = null;
			inSize *= 2;
		} while (numMerges > 1);

		return list;
	} // z-order of a point given coords and inverse of the longer side of data bbox


	function zOrder(x, y, minX, minY, invSize) {
		// coords are transformed into non-negative 15-bit integer range
		x = 32767 * (x - minX) * invSize;
		y = 32767 * (y - minY) * invSize;
		x = (x | x << 8) & 0x00FF00FF;
		x = (x | x << 4) & 0x0F0F0F0F;
		x = (x | x << 2) & 0x33333333;
		x = (x | x << 1) & 0x55555555;
		y = (y | y << 8) & 0x00FF00FF;
		y = (y | y << 4) & 0x0F0F0F0F;
		y = (y | y << 2) & 0x33333333;
		y = (y | y << 1) & 0x55555555;
		return x | y << 1;
	} // find the leftmost node of a polygon ring


	function getLeftmost(start) {
		let p = start,
				leftmost = start;

		do {
			if (p.x < leftmost.x || p.x === leftmost.x && p.y < leftmost.y) leftmost = p;
			p = p.next;
		} while (p !== start);

		return leftmost;
	} // check if a point lies within a convex triangle


	function pointInTriangle(ax, ay, bx, by, cx, cy, px, py) {
		return (cx - px) * (ay - py) - (ax - px) * (cy - py) >= 0 && (ax - px) * (by - py) - (bx - px) * (ay - py) >= 0 && (bx - px) * (cy - py) - (cx - px) * (by - py) >= 0;
	} // check if a diagonal between two polygon nodes is valid (lies in polygon interior)


	function isValidDiagonal(a, b) {
		return a.next.i !== b.i && a.prev.i !== b.i && !intersectsPolygon(a, b) && (locallyInside(a, b) && locallyInside(b, a) && middleInside(a, b) && (area(a.prev, a, b.prev) || area(a, b.prev, b)) || // does not create opposite-facing sectors
		equals(a, b) && area(a.prev, a, a.next) > 0 && area(b.prev, b, b.next) > 0); // special zero-length case
	} // signed area of a triangle


	function area(p, q, r) {
		return (q.y - p.y) * (r.x - q.x) - (q.x - p.x) * (r.y - q.y);
	} // check if two points are equal


	function equals(p1, p2) {
		return p1.x === p2.x && p1.y === p2.y;
	} // check if two segments intersect


	function intersects(p1, q1, p2, q2) {
		const o1 = sign(area(p1, q1, p2));
		const o2 = sign(area(p1, q1, q2));
		const o3 = sign(area(p2, q2, p1));
		const o4 = sign(area(p2, q2, q1));
		if (o1 !== o2 && o3 !== o4) return true; // general case

		if (o1 === 0 && onSegment(p1, p2, q1)) return true; // p1, q1 and p2 are collinear and p2 lies on p1q1

		if (o2 === 0 && onSegment(p1, q2, q1)) return true; // p1, q1 and q2 are collinear and q2 lies on p1q1

		if (o3 === 0 && onSegment(p2, p1, q2)) return true; // p2, q2 and p1 are collinear and p1 lies on p2q2

		if (o4 === 0 && onSegment(p2, q1, q2)) return true; // p2, q2 and q1 are collinear and q1 lies on p2q2

		return false;
	} // for collinear points p, q, r, check if point q lies on segment pr


	function onSegment(p, q, r) {
		return q.x <= Math.max(p.x, r.x) && q.x >= Math.min(p.x, r.x) && q.y <= Math.max(p.y, r.y) && q.y >= Math.min(p.y, r.y);
	}

	function sign(num) {
		return num > 0 ? 1 : num < 0 ? -1 : 0;
	} // check if a polygon diagonal intersects any polygon segments


	function intersectsPolygon(a, b) {
		let p = a;

		do {
			if (p.i !== a.i && p.next.i !== a.i && p.i !== b.i && p.next.i !== b.i && intersects(p, p.next, a, b)) return true;
			p = p.next;
		} while (p !== a);

		return false;
	} // check if a polygon diagonal is locally inside the polygon


	function locallyInside(a, b) {
		return area(a.prev, a, a.next) < 0 ? area(a, b, a.next) >= 0 && area(a, a.prev, b) >= 0 : area(a, b, a.prev) < 0 || area(a, a.next, b) < 0;
	} // check if the middle point of a polygon diagonal is inside the polygon


	function middleInside(a, b) {
		let p = a,
				inside = false;
		const px = (a.x + b.x) / 2,
					py = (a.y + b.y) / 2;

		do {
			if (p.y > py !== p.next.y > py && p.next.y !== p.y && px < (p.next.x - p.x) * (py - p.y) / (p.next.y - p.y) + p.x) inside = !inside;
			p = p.next;
		} while (p !== a);

		return inside;
	} // link two polygon vertices with a bridge; if the vertices belong to the same ring, it splits polygon into two;
	// if one belongs to the outer ring and another to a hole, it merges it into a single ring


	function splitPolygon(a, b) {
		const a2 = new Node(a.i, a.x, a.y),
					b2 = new Node(b.i, b.x, b.y),
					an = a.next,
					bp = b.prev;
		a.next = b;
		b.prev = a;
		a2.next = an;
		an.prev = a2;
		b2.next = a2;
		a2.prev = b2;
		bp.next = b2;
		b2.prev = bp;
		return b2;
	} // create a node and optionally link it with previous one (in a circular doubly linked list)


	function insertNode(i, x, y, last) {
		const p = new Node(i, x, y);

		if (!last) {
			p.prev = p;
			p.next = p;
		} else {
			p.next = last.next;
			p.prev = last;
			last.next.prev = p;
			last.next = p;
		}

		return p;
	}

	function removeNode(p) {
		p.next.prev = p.prev;
		p.prev.next = p.next;
		if (p.prevZ) p.prevZ.nextZ = p.nextZ;
		if (p.nextZ) p.nextZ.prevZ = p.prevZ;
	}

	function Node(i, x, y) {
		// vertex index in coordinates array
		this.i = i; // vertex coordinates

		this.x = x;
		this.y = y; // previous and next vertex nodes in a polygon ring

		this.prev = null;
		this.next = null; // z-order curve value

		this.z = null; // previous and next nodes in z-order

		this.prevZ = null;
		this.nextZ = null; // indicates whether this is a steiner point

		this.steiner = false;
	}

	function signedArea(data, start, end, dim) {
		let sum = 0;

		for (let i = start, j = end - dim; i < end; i += dim) {
			sum += (data[j] - data[i]) * (data[i + 1] + data[j + 1]);
			j = i;
		}

		return sum;
	}

	class ShapeUtils {
		// calculate area of the contour polygon
		static area(contour) {
			const n = contour.length;
			let a = 0.0;

			for (let p = n - 1, q = 0; q < n; p = q++) {
				a += contour[p].x * contour[q].y - contour[q].x * contour[p].y;
			}

			return a * 0.5;
		}

		static isClockWise(pts) {
			return ShapeUtils.area(pts) < 0;
		}

		static triangulateShape(contour, holes) {
			const vertices = []; // flat array of vertices like [ x0,y0, x1,y1, x2,y2, ... ]

			const holeIndices = []; // array of hole indices

			const faces = []; // final array of vertex indices like [ [ a,b,d ], [ b,c,d ] ]

			removeDupEndPts(contour);
			addContour(vertices, contour); //

			let holeIndex = contour.length;
			holes.forEach(removeDupEndPts);

			for (let i = 0; i < holes.length; i++) {
				holeIndices.push(holeIndex);
				holeIndex += holes[i].length;
				addContour(vertices, holes[i]);
			} //


			const triangles = Earcut.triangulate(vertices, holeIndices); //

			for (let i = 0; i < triangles.length; i += 3) {
				faces.push(triangles.slice(i, i + 3));
			}

			return faces;
		}

	}

	function removeDupEndPts(points) {
		const l = points.length;

		if (l > 2 && points[l - 1].equals(points[0])) {
			points.pop();
		}
	}

	function addContour(vertices, contour) {
		for (let i = 0; i < contour.length; i++) {
			vertices.push(contour[i].x);
			vertices.push(contour[i].y);
		}
	}

	/**
	 * Creates extruded geometry from a path shape.
	 *
	 * parameters = {
	 *
	 *	curveSegments: <int>, // number of points on the curves
	 *	steps: <int>, // number of points for z-side extrusions / used for subdividing segments of extrude spline too
	 *	depth: <float>, // Depth to extrude the shape
	 *
	 *	bevelEnabled: <bool>, // turn on bevel
	 *	bevelThickness: <float>, // how deep into the original shape bevel goes
	 *	bevelSize: <float>, // how far from shape outline (including bevelOffset) is bevel
	 *	bevelOffset: <float>, // how far from shape outline does bevel start
	 *	bevelSegments: <int>, // number of bevel layers
	 *
	 *	extrudePath: <THREE.Curve> // curve to extrude shape along
	 *
	 *	UVGenerator: <Object> // object that provides UV generator functions
	 *
	 * }
	 */

	class ExtrudeGeometry extends BufferGeometry {
		constructor(shapes = new Shape([new Vector2(0.5, 0.5), new Vector2(-0.5, 0.5), new Vector2(-0.5, -0.5), new Vector2(0.5, -0.5)]), options = {}) {
			super();
			this.type = 'ExtrudeGeometry';
			this.parameters = {
				shapes: shapes,
				options: options
			};
			shapes = Array.isArray(shapes) ? shapes : [shapes];
			const scope = this;
			const verticesArray = [];
			const uvArray = [];

			for (let i = 0, l = shapes.length; i < l; i++) {
				const shape = shapes[i];
				addShape(shape);
			} // build geometry


			this.setAttribute('position', new Float32BufferAttribute(verticesArray, 3));
			this.setAttribute('uv', new Float32BufferAttribute(uvArray, 2));
			this.computeVertexNormals(); // functions

			function addShape(shape) {
				const placeholder = []; // options

				const curveSegments = options.curveSegments !== undefined ? options.curveSegments : 12;
				const steps = options.steps !== undefined ? options.steps : 1;
				let depth = options.depth !== undefined ? options.depth : 1;
				let bevelEnabled = options.bevelEnabled !== undefined ? options.bevelEnabled : true;
				let bevelThickness = options.bevelThickness !== undefined ? options.bevelThickness : 0.2;
				let bevelSize = options.bevelSize !== undefined ? options.bevelSize : bevelThickness - 0.1;
				let bevelOffset = options.bevelOffset !== undefined ? options.bevelOffset : 0;
				let bevelSegments = options.bevelSegments !== undefined ? options.bevelSegments : 3;
				const extrudePath = options.extrudePath;
				const uvgen = options.UVGenerator !== undefined ? options.UVGenerator : WorldUVGenerator; // deprecated options

				if (options.amount !== undefined) {
					console.warn('THREE.ExtrudeBufferGeometry: amount has been renamed to depth.');
					depth = options.amount;
				} //


				let extrudePts,
						extrudeByPath = false;
				let splineTube, binormal, normal, position2;

				if (extrudePath) {
					extrudePts = extrudePath.getSpacedPoints(steps);
					extrudeByPath = true;
					bevelEnabled = false; // bevels not supported for path extrusion
					// SETUP TNB variables
					// TODO1 - have a .isClosed in spline?

					splineTube = extrudePath.computeFrenetFrames(steps, false); // console.log(splineTube, 'splineTube', splineTube.normals.length, 'steps', steps, 'extrudePts', extrudePts.length);

					binormal = new Vector3();
					normal = new Vector3();
					position2 = new Vector3();
				} // Safeguards if bevels are not enabled


				if (!bevelEnabled) {
					bevelSegments = 0;
					bevelThickness = 0;
					bevelSize = 0;
					bevelOffset = 0;
				} // Variables initialization


				const shapePoints = shape.extractPoints(curveSegments);
				let vertices = shapePoints.shape;
				const holes = shapePoints.holes;
				const reverse = !ShapeUtils.isClockWise(vertices);

				if (reverse) {
					vertices = vertices.reverse(); // Maybe we should also check if holes are in the opposite direction, just to be safe ...

					for (let h = 0, hl = holes.length; h < hl; h++) {
						const ahole = holes[h];

						if (ShapeUtils.isClockWise(ahole)) {
							holes[h] = ahole.reverse();
						}
					}
				}

				const faces = ShapeUtils.triangulateShape(vertices, holes);
				/* Vertices */

				const contour = vertices; // vertices has all points but contour has only points of circumference

				for (let h = 0, hl = holes.length; h < hl; h++) {
					const ahole = holes[h];
					vertices = vertices.concat(ahole);
				}

				function scalePt2(pt, vec, size) {
					if (!vec) console.error('THREE.ExtrudeGeometry: vec does not exist');
					return vec.clone().multiplyScalar(size).add(pt);
				}

				const vlen = vertices.length,
							flen = faces.length; // Find directions for point movement

				function getBevelVec(inPt, inPrev, inNext) {
					// computes for inPt the corresponding point inPt' on a new contour
					//	 shifted by 1 unit (length of normalized vector) to the left
					// if we walk along contour clockwise, this new contour is outside the old one
					//
					// inPt' is the intersection of the two lines parallel to the two
					//	adjacent edges of inPt at a distance of 1 unit on the left side.
					let v_trans_x, v_trans_y, shrink_by; // resulting translation vector for inPt
					// good reading for geometry algorithms (here: line-line intersection)
					// http://geomalgorithms.com/a05-_intersect-1.html

					const v_prev_x = inPt.x - inPrev.x,
								v_prev_y = inPt.y - inPrev.y;
					const v_next_x = inNext.x - inPt.x,
								v_next_y = inNext.y - inPt.y;
					const v_prev_lensq = v_prev_x * v_prev_x + v_prev_y * v_prev_y; // check for collinear edges

					const collinear0 = v_prev_x * v_next_y - v_prev_y * v_next_x;

					if (Math.abs(collinear0) > Number.EPSILON) {
						// not collinear
						// length of vectors for normalizing
						const v_prev_len = Math.sqrt(v_prev_lensq);
						const v_next_len = Math.sqrt(v_next_x * v_next_x + v_next_y * v_next_y); // shift adjacent points by unit vectors to the left

						const ptPrevShift_x = inPrev.x - v_prev_y / v_prev_len;
						const ptPrevShift_y = inPrev.y + v_prev_x / v_prev_len;
						const ptNextShift_x = inNext.x - v_next_y / v_next_len;
						const ptNextShift_y = inNext.y + v_next_x / v_next_len; // scaling factor for v_prev to intersection point

						const sf = ((ptNextShift_x - ptPrevShift_x) * v_next_y - (ptNextShift_y - ptPrevShift_y) * v_next_x) / (v_prev_x * v_next_y - v_prev_y * v_next_x); // vector from inPt to intersection point

						v_trans_x = ptPrevShift_x + v_prev_x * sf - inPt.x;
						v_trans_y = ptPrevShift_y + v_prev_y * sf - inPt.y; // Don't normalize!, otherwise sharp corners become ugly
						//	but prevent crazy spikes

						const v_trans_lensq = v_trans_x * v_trans_x + v_trans_y * v_trans_y;

						if (v_trans_lensq <= 2) {
							return new Vector2(v_trans_x, v_trans_y);
						} else {
							shrink_by = Math.sqrt(v_trans_lensq / 2);
						}
					} else {
						// handle special case of collinear edges
						let direction_eq = false; // assumes: opposite

						if (v_prev_x > Number.EPSILON) {
							if (v_next_x > Number.EPSILON) {
								direction_eq = true;
							}
						} else {
							if (v_prev_x < -Number.EPSILON) {
								if (v_next_x < -Number.EPSILON) {
									direction_eq = true;
								}
							} else {
								if (Math.sign(v_prev_y) === Math.sign(v_next_y)) {
									direction_eq = true;
								}
							}
						}

						if (direction_eq) {
							// console.log("Warning: lines are a straight sequence");
							v_trans_x = -v_prev_y;
							v_trans_y = v_prev_x;
							shrink_by = Math.sqrt(v_prev_lensq);
						} else {
							// console.log("Warning: lines are a straight spike");
							v_trans_x = v_prev_x;
							v_trans_y = v_prev_y;
							shrink_by = Math.sqrt(v_prev_lensq / 2);
						}
					}

					return new Vector2(v_trans_x / shrink_by, v_trans_y / shrink_by);
				}

				const contourMovements = [];

				for (let i = 0, il = contour.length, j = il - 1, k = i + 1; i < il; i++, j++, k++) {
					if (j === il) j = 0;
					if (k === il) k = 0; //	(j)---(i)---(k)
					// console.log('i,j,k', i, j , k)

					contourMovements[i] = getBevelVec(contour[i], contour[j], contour[k]);
				}

				const holesMovements = [];
				let oneHoleMovements,
						verticesMovements = contourMovements.concat();

				for (let h = 0, hl = holes.length; h < hl; h++) {
					const ahole = holes[h];
					oneHoleMovements = [];

					for (let i = 0, il = ahole.length, j = il - 1, k = i + 1; i < il; i++, j++, k++) {
						if (j === il) j = 0;
						if (k === il) k = 0; //	(j)---(i)---(k)

						oneHoleMovements[i] = getBevelVec(ahole[i], ahole[j], ahole[k]);
					}

					holesMovements.push(oneHoleMovements);
					verticesMovements = verticesMovements.concat(oneHoleMovements);
				} // Loop bevelSegments, 1 for the front, 1 for the back


				for (let b = 0; b < bevelSegments; b++) {
					//for ( b = bevelSegments; b > 0; b -- ) {
					const t = b / bevelSegments;
					const z = bevelThickness * Math.cos(t * Math.PI / 2);
					const bs = bevelSize * Math.sin(t * Math.PI / 2) + bevelOffset; // contract shape

					for (let i = 0, il = contour.length; i < il; i++) {
						const vert = scalePt2(contour[i], contourMovements[i], bs);
						v(vert.x, vert.y, -z);
					} // expand holes


					for (let h = 0, hl = holes.length; h < hl; h++) {
						const ahole = holes[h];
						oneHoleMovements = holesMovements[h];

						for (let i = 0, il = ahole.length; i < il; i++) {
							const vert = scalePt2(ahole[i], oneHoleMovements[i], bs);
							v(vert.x, vert.y, -z);
						}
					}
				}

				const bs = bevelSize + bevelOffset; // Back facing vertices

				for (let i = 0; i < vlen; i++) {
					const vert = bevelEnabled ? scalePt2(vertices[i], verticesMovements[i], bs) : vertices[i];

					if (!extrudeByPath) {
						v(vert.x, vert.y, 0);
					} else {
						// v( vert.x, vert.y + extrudePts[ 0 ].y, extrudePts[ 0 ].x );
						normal.copy(splineTube.normals[0]).multiplyScalar(vert.x);
						binormal.copy(splineTube.binormals[0]).multiplyScalar(vert.y);
						position2.copy(extrudePts[0]).add(normal).add(binormal);
						v(position2.x, position2.y, position2.z);
					}
				} // Add stepped vertices...
				// Including front facing vertices


				for (let s = 1; s <= steps; s++) {
					for (let i = 0; i < vlen; i++) {
						const vert = bevelEnabled ? scalePt2(vertices[i], verticesMovements[i], bs) : vertices[i];

						if (!extrudeByPath) {
							v(vert.x, vert.y, depth / steps * s);
						} else {
							// v( vert.x, vert.y + extrudePts[ s - 1 ].y, extrudePts[ s - 1 ].x );
							normal.copy(splineTube.normals[s]).multiplyScalar(vert.x);
							binormal.copy(splineTube.binormals[s]).multiplyScalar(vert.y);
							position2.copy(extrudePts[s]).add(normal).add(binormal);
							v(position2.x, position2.y, position2.z);
						}
					}
				} // Add bevel segments planes
				//for ( b = 1; b <= bevelSegments; b ++ ) {


				for (let b = bevelSegments - 1; b >= 0; b--) {
					const t = b / bevelSegments;
					const z = bevelThickness * Math.cos(t * Math.PI / 2);
					const bs = bevelSize * Math.sin(t * Math.PI / 2) + bevelOffset; // contract shape

					for (let i = 0, il = contour.length; i < il; i++) {
						const vert = scalePt2(contour[i], contourMovements[i], bs);
						v(vert.x, vert.y, depth + z);
					} // expand holes


					for (let h = 0, hl = holes.length; h < hl; h++) {
						const ahole = holes[h];
						oneHoleMovements = holesMovements[h];

						for (let i = 0, il = ahole.length; i < il; i++) {
							const vert = scalePt2(ahole[i], oneHoleMovements[i], bs);

							if (!extrudeByPath) {
								v(vert.x, vert.y, depth + z);
							} else {
								v(vert.x, vert.y + extrudePts[steps - 1].y, extrudePts[steps - 1].x + z);
							}
						}
					}
				}
				/* Faces */
				// Top and bottom faces


				buildLidFaces(); // Sides faces

				buildSideFaces(); /////	Internal functions

				function buildLidFaces() {
					const start = verticesArray.length / 3;

					if (bevelEnabled) {
						let layer = 0; // steps + 1

						let offset = vlen * layer; // Bottom faces

						for (let i = 0; i < flen; i++) {
							const face = faces[i];
							f3(face[2] + offset, face[1] + offset, face[0] + offset);
						}

						layer = steps + bevelSegments * 2;
						offset = vlen * layer; // Top faces

						for (let i = 0; i < flen; i++) {
							const face = faces[i];
							f3(face[0] + offset, face[1] + offset, face[2] + offset);
						}
					} else {
						// Bottom faces
						for (let i = 0; i < flen; i++) {
							const face = faces[i];
							f3(face[2], face[1], face[0]);
						} // Top faces


						for (let i = 0; i < flen; i++) {
							const face = faces[i];
							f3(face[0] + vlen * steps, face[1] + vlen * steps, face[2] + vlen * steps);
						}
					}

					scope.addGroup(start, verticesArray.length / 3 - start, 0);
				} // Create faces for the z-sides of the shape


				function buildSideFaces() {
					const start = verticesArray.length / 3;
					let layeroffset = 0;
					sidewalls(contour, layeroffset);
					layeroffset += contour.length;

					for (let h = 0, hl = holes.length; h < hl; h++) {
						const ahole = holes[h];
						sidewalls(ahole, layeroffset); //, true

						layeroffset += ahole.length;
					}

					scope.addGroup(start, verticesArray.length / 3 - start, 1);
				}

				function sidewalls(contour, layeroffset) {
					let i = contour.length;

					while (--i >= 0) {
						const j = i;
						let k = i - 1;
						if (k < 0) k = contour.length - 1; //console.log('b', i,j, i-1, k,vertices.length);

						for (let s = 0, sl = steps + bevelSegments * 2; s < sl; s++) {
							const slen1 = vlen * s;
							const slen2 = vlen * (s + 1);
							const a = layeroffset + j + slen1,
										b = layeroffset + k + slen1,
										c = layeroffset + k + slen2,
										d = layeroffset + j + slen2;
							f4(a, b, c, d);
						}
					}
				}

				function v(x, y, z) {
					placeholder.push(x);
					placeholder.push(y);
					placeholder.push(z);
				}

				function f3(a, b, c) {
					addVertex(a);
					addVertex(b);
					addVertex(c);
					const nextIndex = verticesArray.length / 3;
					const uvs = uvgen.generateTopUV(scope, verticesArray, nextIndex - 3, nextIndex - 2, nextIndex - 1);
					addUV(uvs[0]);
					addUV(uvs[1]);
					addUV(uvs[2]);
				}

				function f4(a, b, c, d) {
					addVertex(a);
					addVertex(b);
					addVertex(d);
					addVertex(b);
					addVertex(c);
					addVertex(d);
					const nextIndex = verticesArray.length / 3;
					const uvs = uvgen.generateSideWallUV(scope, verticesArray, nextIndex - 6, nextIndex - 3, nextIndex - 2, nextIndex - 1);
					addUV(uvs[0]);
					addUV(uvs[1]);
					addUV(uvs[3]);
					addUV(uvs[1]);
					addUV(uvs[2]);
					addUV(uvs[3]);
				}

				function addVertex(index) {
					verticesArray.push(placeholder[index * 3 + 0]);
					verticesArray.push(placeholder[index * 3 + 1]);
					verticesArray.push(placeholder[index * 3 + 2]);
				}

				function addUV(vector2) {
					uvArray.push(vector2.x);
					uvArray.push(vector2.y);
				}
			}
		}

		toJSON() {
			const data = super.toJSON();
			const shapes = this.parameters.shapes;
			const options = this.parameters.options;
			return toJSON$1(shapes, options, data);
		}

		static fromJSON(data, shapes) {
			const geometryShapes = [];

			for (let j = 0, jl = data.shapes.length; j < jl; j++) {
				const shape = shapes[data.shapes[j]];
				geometryShapes.push(shape);
			}

			const extrudePath = data.options.extrudePath;

			if (extrudePath !== undefined) {
				data.options.extrudePath = new Curves[extrudePath.type]().fromJSON(extrudePath);
			}

			return new ExtrudeGeometry(geometryShapes, data.options);
		}

	}

	const WorldUVGenerator = {
		generateTopUV: function (geometry, vertices, indexA, indexB, indexC) {
			const a_x = vertices[indexA * 3];
			const a_y = vertices[indexA * 3 + 1];
			const b_x = vertices[indexB * 3];
			const b_y = vertices[indexB * 3 + 1];
			const c_x = vertices[indexC * 3];
			const c_y = vertices[indexC * 3 + 1];
			return [new Vector2(a_x, a_y), new Vector2(b_x, b_y), new Vector2(c_x, c_y)];
		},
		generateSideWallUV: function (geometry, vertices, indexA, indexB, indexC, indexD) {
			const a_x = vertices[indexA * 3];
			const a_y = vertices[indexA * 3 + 1];
			const a_z = vertices[indexA * 3 + 2];
			const b_x = vertices[indexB * 3];
			const b_y = vertices[indexB * 3 + 1];
			const b_z = vertices[indexB * 3 + 2];
			const c_x = vertices[indexC * 3];
			const c_y = vertices[indexC * 3 + 1];
			const c_z = vertices[indexC * 3 + 2];
			const d_x = vertices[indexD * 3];
			const d_y = vertices[indexD * 3 + 1];
			const d_z = vertices[indexD * 3 + 2];

			if (Math.abs(a_y - b_y) < Math.abs(a_x - b_x)) {
				return [new Vector2(a_x, 1 - a_z), new Vector2(b_x, 1 - b_z), new Vector2(c_x, 1 - c_z), new Vector2(d_x, 1 - d_z)];
			} else {
				return [new Vector2(a_y, 1 - a_z), new Vector2(b_y, 1 - b_z), new Vector2(c_y, 1 - c_z), new Vector2(d_y, 1 - d_z)];
			}
		}
	};

	function toJSON$1(shapes, options, data) {
		data.shapes = [];

		if (Array.isArray(shapes)) {
			for (let i = 0, l = shapes.length; i < l; i++) {
				const shape = shapes[i];
				data.shapes.push(shape.uuid);
			}
		} else {
			data.shapes.push(shapes.uuid);
		}

		if (options.extrudePath !== undefined) data.options.extrudePath = options.extrudePath.toJSON();
		return data;
	}

	class IcosahedronGeometry extends PolyhedronGeometry {
		constructor(radius = 1, detail = 0) {
			const t = (1 + Math.sqrt(5)) / 2;
			const vertices = [-1, t, 0, 1, t, 0, -1, -t, 0, 1, -t, 0, 0, -1, t, 0, 1, t, 0, -1, -t, 0, 1, -t, t, 0, -1, t, 0, 1, -t, 0, -1, -t, 0, 1];
			const indices = [0, 11, 5, 0, 5, 1, 0, 1, 7, 0, 7, 10, 0, 10, 11, 1, 5, 9, 5, 11, 4, 11, 10, 2, 10, 7, 6, 7, 1, 8, 3, 9, 4, 3, 4, 2, 3, 2, 6, 3, 6, 8, 3, 8, 9, 4, 9, 5, 2, 4, 11, 6, 2, 10, 8, 6, 7, 9, 8, 1];
			super(vertices, indices, radius, detail);
			this.type = 'IcosahedronGeometry';
			this.parameters = {
				radius: radius,
				detail: detail
			};
		}

		static fromJSON(data) {
			return new IcosahedronGeometry(data.radius, data.detail);
		}

	}

	class LatheGeometry extends BufferGeometry {
		constructor(points = [new Vector2(0, 0.5), new Vector2(0.5, 0), new Vector2(0, -0.5)], segments = 12, phiStart = 0, phiLength = Math.PI * 2) {
			super();
			this.type = 'LatheGeometry';
			this.parameters = {
				points: points,
				segments: segments,
				phiStart: phiStart,
				phiLength: phiLength
			};
			segments = Math.floor(segments); // clamp phiLength so it's in range of [ 0, 2PI ]

			phiLength = clamp(phiLength, 0, Math.PI * 2); // buffers

			const indices = [];
			const vertices = [];
			const uvs = []; // helper variables

			const inverseSegments = 1.0 / segments;
			const vertex = new Vector3();
			const uv = new Vector2(); // generate vertices and uvs

			for (let i = 0; i <= segments; i++) {
				const phi = phiStart + i * inverseSegments * phiLength;
				const sin = Math.sin(phi);
				const cos = Math.cos(phi);

				for (let j = 0; j <= points.length - 1; j++) {
					// vertex
					vertex.x = points[j].x * sin;
					vertex.y = points[j].y;
					vertex.z = points[j].x * cos;
					vertices.push(vertex.x, vertex.y, vertex.z); // uv

					uv.x = i / segments;
					uv.y = j / (points.length - 1);
					uvs.push(uv.x, uv.y);
				}
			} // indices


			for (let i = 0; i < segments; i++) {
				for (let j = 0; j < points.length - 1; j++) {
					const base = j + i * points.length;
					const a = base;
					const b = base + points.length;
					const c = base + points.length + 1;
					const d = base + 1; // faces

					indices.push(a, b, d);
					indices.push(b, c, d);
				}
			} // build geometry


			this.setIndex(indices);
			this.setAttribute('position', new Float32BufferAttribute(vertices, 3));
			this.setAttribute('uv', new Float32BufferAttribute(uvs, 2)); // generate normals

			this.computeVertexNormals(); // if the geometry is closed, we need to average the normals along the seam.
			// because the corresponding vertices are identical (but still have different UVs).

			if (phiLength === Math.PI * 2) {
				const normals = this.attributes.normal.array;
				const n1 = new Vector3();
				const n2 = new Vector3();
				const n = new Vector3(); // this is the buffer offset for the last line of vertices

				const base = segments * points.length * 3;

				for (let i = 0, j = 0; i < points.length; i++, j += 3) {
					// select the normal of the vertex in the first line
					n1.x = normals[j + 0];
					n1.y = normals[j + 1];
					n1.z = normals[j + 2]; // select the normal of the vertex in the last line

					n2.x = normals[base + j + 0];
					n2.y = normals[base + j + 1];
					n2.z = normals[base + j + 2]; // average normals

					n.addVectors(n1, n2).normalize(); // assign the new values to both normals

					normals[j + 0] = normals[base + j + 0] = n.x;
					normals[j + 1] = normals[base + j + 1] = n.y;
					normals[j + 2] = normals[base + j + 2] = n.z;
				}
			}
		}

		static fromJSON(data) {
			return new LatheGeometry(data.points, data.segments, data.phiStart, data.phiLength);
		}

	}

	class OctahedronGeometry extends PolyhedronGeometry {
		constructor(radius = 1, detail = 0) {
			const vertices = [1, 0, 0, -1, 0, 0, 0, 1, 0, 0, -1, 0, 0, 0, 1, 0, 0, -1];
			const indices = [0, 2, 4, 0, 4, 3, 0, 3, 5, 0, 5, 2, 1, 2, 5, 1, 5, 3, 1, 3, 4, 1, 4, 2];
			super(vertices, indices, radius, detail);
			this.type = 'OctahedronGeometry';
			this.parameters = {
				radius: radius,
				detail: detail
			};
		}

		static fromJSON(data) {
			return new OctahedronGeometry(data.radius, data.detail);
		}

	}

	class RingGeometry extends BufferGeometry {
		constructor(innerRadius = 0.5, outerRadius = 1, thetaSegments = 8, phiSegments = 1, thetaStart = 0, thetaLength = Math.PI * 2) {
			super();
			this.type = 'RingGeometry';
			this.parameters = {
				innerRadius: innerRadius,
				outerRadius: outerRadius,
				thetaSegments: thetaSegments,
				phiSegments: phiSegments,
				thetaStart: thetaStart,
				thetaLength: thetaLength
			};
			thetaSegments = Math.max(3, thetaSegments);
			phiSegments = Math.max(1, phiSegments); // buffers

			const indices = [];
			const vertices = [];
			const normals = [];
			const uvs = []; // some helper variables

			let radius = innerRadius;
			const radiusStep = (outerRadius - innerRadius) / phiSegments;
			const vertex = new Vector3();
			const uv = new Vector2(); // generate vertices, normals and uvs

			for (let j = 0; j <= phiSegments; j++) {
				for (let i = 0; i <= thetaSegments; i++) {
					// values are generate from the inside of the ring to the outside
					const segment = thetaStart + i / thetaSegments * thetaLength; // vertex

					vertex.x = radius * Math.cos(segment);
					vertex.y = radius * Math.sin(segment);
					vertices.push(vertex.x, vertex.y, vertex.z); // normal

					normals.push(0, 0, 1); // uv

					uv.x = (vertex.x / outerRadius + 1) / 2;
					uv.y = (vertex.y / outerRadius + 1) / 2;
					uvs.push(uv.x, uv.y);
				} // increase the radius for next row of vertices


				radius += radiusStep;
			} // indices


			for (let j = 0; j < phiSegments; j++) {
				const thetaSegmentLevel = j * (thetaSegments + 1);

				for (let i = 0; i < thetaSegments; i++) {
					const segment = i + thetaSegmentLevel;
					const a = segment;
					const b = segment + thetaSegments + 1;
					const c = segment + thetaSegments + 2;
					const d = segment + 1; // faces

					indices.push(a, b, d);
					indices.push(b, c, d);
				}
			} // build geometry


			this.setIndex(indices);
			this.setAttribute('position', new Float32BufferAttribute(vertices, 3));
			this.setAttribute('normal', new Float32BufferAttribute(normals, 3));
			this.setAttribute('uv', new Float32BufferAttribute(uvs, 2));
		}

		static fromJSON(data) {
			return new RingGeometry(data.innerRadius, data.outerRadius, data.thetaSegments, data.phiSegments, data.thetaStart, data.thetaLength);
		}

	}

	class ShapeGeometry extends BufferGeometry {
		constructor(shapes = new Shape([new Vector2(0, 0.5), new Vector2(-0.5, -0.5), new Vector2(0.5, -0.5)]), curveSegments = 12) {
			super();
			this.type = 'ShapeGeometry';
			this.parameters = {
				shapes: shapes,
				curveSegments: curveSegments
			}; // buffers

			const indices = [];
			const vertices = [];
			const normals = [];
			const uvs = []; // helper variables

			let groupStart = 0;
			let groupCount = 0; // allow single and array values for "shapes" parameter

			if (Array.isArray(shapes) === false) {
				addShape(shapes);
			} else {
				for (let i = 0; i < shapes.length; i++) {
					addShape(shapes[i]);
					this.addGroup(groupStart, groupCount, i); // enables MultiMaterial support

					groupStart += groupCount;
					groupCount = 0;
				}
			} // build geometry


			this.setIndex(indices);
			this.setAttribute('position', new Float32BufferAttribute(vertices, 3));
			this.setAttribute('normal', new Float32BufferAttribute(normals, 3));
			this.setAttribute('uv', new Float32BufferAttribute(uvs, 2)); // helper functions

			function addShape(shape) {
				const indexOffset = vertices.length / 3;
				const points = shape.extractPoints(curveSegments);
				let shapeVertices = points.shape;
				const shapeHoles = points.holes; // check direction of vertices

				if (ShapeUtils.isClockWise(shapeVertices) === false) {
					shapeVertices = shapeVertices.reverse();
				}

				for (let i = 0, l = shapeHoles.length; i < l; i++) {
					const shapeHole = shapeHoles[i];

					if (ShapeUtils.isClockWise(shapeHole) === true) {
						shapeHoles[i] = shapeHole.reverse();
					}
				}

				const faces = ShapeUtils.triangulateShape(shapeVertices, shapeHoles); // join vertices of inner and outer paths to a single array

				for (let i = 0, l = shapeHoles.length; i < l; i++) {
					const shapeHole = shapeHoles[i];
					shapeVertices = shapeVertices.concat(shapeHole);
				} // vertices, normals, uvs


				for (let i = 0, l = shapeVertices.length; i < l; i++) {
					const vertex = shapeVertices[i];
					vertices.push(vertex.x, vertex.y, 0);
					normals.push(0, 0, 1);
					uvs.push(vertex.x, vertex.y); // world uvs
				} // incides


				for (let i = 0, l = faces.length; i < l; i++) {
					const face = faces[i];
					const a = face[0] + indexOffset;
					const b = face[1] + indexOffset;
					const c = face[2] + indexOffset;
					indices.push(a, b, c);
					groupCount += 3;
				}
			}
		}

		toJSON() {
			const data = super.toJSON();
			const shapes = this.parameters.shapes;
			return toJSON(shapes, data);
		}

		static fromJSON(data, shapes) {
			const geometryShapes = [];

			for (let j = 0, jl = data.shapes.length; j < jl; j++) {
				const shape = shapes[data.shapes[j]];
				geometryShapes.push(shape);
			}

			return new ShapeGeometry(geometryShapes, data.curveSegments);
		}

	}

	function toJSON(shapes, data) {
		data.shapes = [];

		if (Array.isArray(shapes)) {
			for (let i = 0, l = shapes.length; i < l; i++) {
				const shape = shapes[i];
				data.shapes.push(shape.uuid);
			}
		} else {
			data.shapes.push(shapes.uuid);
		}

		return data;
	}

	class SphereGeometry extends BufferGeometry {
		constructor(radius = 1, widthSegments = 32, heightSegments = 16, phiStart = 0, phiLength = Math.PI * 2, thetaStart = 0, thetaLength = Math.PI) {
			super();
			this.type = 'SphereGeometry';
			this.parameters = {
				radius: radius,
				widthSegments: widthSegments,
				heightSegments: heightSegments,
				phiStart: phiStart,
				phiLength: phiLength,
				thetaStart: thetaStart,
				thetaLength: thetaLength
			};
			widthSegments = Math.max(3, Math.floor(widthSegments));
			heightSegments = Math.max(2, Math.floor(heightSegments));
			const thetaEnd = Math.min(thetaStart + thetaLength, Math.PI);
			let index = 0;
			const grid = [];
			const vertex = new Vector3();
			const normal = new Vector3(); // buffers

			const indices = [];
			const vertices = [];
			const normals = [];
			const uvs = []; // generate vertices, normals and uvs

			for (let iy = 0; iy <= heightSegments; iy++) {
				const verticesRow = [];
				const v = iy / heightSegments; // special case for the poles

				let uOffset = 0;

				if (iy == 0 && thetaStart == 0) {
					uOffset = 0.5 / widthSegments;
				} else if (iy == heightSegments && thetaEnd == Math.PI) {
					uOffset = -0.5 / widthSegments;
				}

				for (let ix = 0; ix <= widthSegments; ix++) {
					const u = ix / widthSegments; // vertex

					vertex.x = -radius * Math.cos(phiStart + u * phiLength) * Math.sin(thetaStart + v * thetaLength);
					vertex.y = radius * Math.cos(thetaStart + v * thetaLength);
					vertex.z = radius * Math.sin(phiStart + u * phiLength) * Math.sin(thetaStart + v * thetaLength);
					vertices.push(vertex.x, vertex.y, vertex.z); // normal

					normal.copy(vertex).normalize();
					normals.push(normal.x, normal.y, normal.z); // uv

					uvs.push(u + uOffset, 1 - v);
					verticesRow.push(index++);
				}

				grid.push(verticesRow);
			} // indices


			for (let iy = 0; iy < heightSegments; iy++) {
				for (let ix = 0; ix < widthSegments; ix++) {
					const a = grid[iy][ix + 1];
					const b = grid[iy][ix];
					const c = grid[iy + 1][ix];
					const d = grid[iy + 1][ix + 1];
					if (iy !== 0 || thetaStart > 0) indices.push(a, b, d);
					if (iy !== heightSegments - 1 || thetaEnd < Math.PI) indices.push(b, c, d);
				}
			} // build geometry


			this.setIndex(indices);
			this.setAttribute('position', new Float32BufferAttribute(vertices, 3));
			this.setAttribute('normal', new Float32BufferAttribute(normals, 3));
			this.setAttribute('uv', new Float32BufferAttribute(uvs, 2));
		}

		static fromJSON(data) {
			return new SphereGeometry(data.radius, data.widthSegments, data.heightSegments, data.phiStart, data.phiLength, data.thetaStart, data.thetaLength);
		}

	}

	class TetrahedronGeometry extends PolyhedronGeometry {
		constructor(radius = 1, detail = 0) {
			const vertices = [1, 1, 1, -1, -1, 1, -1, 1, -1, 1, -1, -1];
			const indices = [2, 1, 0, 0, 3, 2, 1, 3, 0, 2, 3, 1];
			super(vertices, indices, radius, detail);
			this.type = 'TetrahedronGeometry';
			this.parameters = {
				radius: radius,
				detail: detail
			};
		}

		static fromJSON(data) {
			return new TetrahedronGeometry(data.radius, data.detail);
		}

	}

	class TorusGeometry extends BufferGeometry {
		constructor(radius = 1, tube = 0.4, radialSegments = 8, tubularSegments = 6, arc = Math.PI * 2) {
			super();
			this.type = 'TorusGeometry';
			this.parameters = {
				radius: radius,
				tube: tube,
				radialSegments: radialSegments,
				tubularSegments: tubularSegments,
				arc: arc
			};
			radialSegments = Math.floor(radialSegments);
			tubularSegments = Math.floor(tubularSegments); // buffers

			const indices = [];
			const vertices = [];
			const normals = [];
			const uvs = []; // helper variables

			const center = new Vector3();
			const vertex = new Vector3();
			const normal = new Vector3(); // generate vertices, normals and uvs

			for (let j = 0; j <= radialSegments; j++) {
				for (let i = 0; i <= tubularSegments; i++) {
					const u = i / tubularSegments * arc;
					const v = j / radialSegments * Math.PI * 2; // vertex

					vertex.x = (radius + tube * Math.cos(v)) * Math.cos(u);
					vertex.y = (radius + tube * Math.cos(v)) * Math.sin(u);
					vertex.z = tube * Math.sin(v);
					vertices.push(vertex.x, vertex.y, vertex.z); // normal

					center.x = radius * Math.cos(u);
					center.y = radius * Math.sin(u);
					normal.subVectors(vertex, center).normalize();
					normals.push(normal.x, normal.y, normal.z); // uv

					uvs.push(i / tubularSegments);
					uvs.push(j / radialSegments);
				}
			} // generate indices


			for (let j = 1; j <= radialSegments; j++) {
				for (let i = 1; i <= tubularSegments; i++) {
					// indices
					const a = (tubularSegments + 1) * j + i - 1;
					const b = (tubularSegments + 1) * (j - 1) + i - 1;
					const c = (tubularSegments + 1) * (j - 1) + i;
					const d = (tubularSegments + 1) * j + i; // faces

					indices.push(a, b, d);
					indices.push(b, c, d);
				}
			} // build geometry


			this.setIndex(indices);
			this.setAttribute('position', new Float32BufferAttribute(vertices, 3));
			this.setAttribute('normal', new Float32BufferAttribute(normals, 3));
			this.setAttribute('uv', new Float32BufferAttribute(uvs, 2));
		}

		static fromJSON(data) {
			return new TorusGeometry(data.radius, data.tube, data.radialSegments, data.tubularSegments, data.arc);
		}

	}

	class TorusKnotGeometry extends BufferGeometry {
		constructor(radius = 1, tube = 0.4, tubularSegments = 64, radialSegments = 8, p = 2, q = 3) {
			super();
			this.type = 'TorusKnotGeometry';
			this.parameters = {
				radius: radius,
				tube: tube,
				tubularSegments: tubularSegments,
				radialSegments: radialSegments,
				p: p,
				q: q
			};
			tubularSegments = Math.floor(tubularSegments);
			radialSegments = Math.floor(radialSegments); // buffers

			const indices = [];
			const vertices = [];
			const normals = [];
			const uvs = []; // helper variables

			const vertex = new Vector3();
			const normal = new Vector3();
			const P1 = new Vector3();
			const P2 = new Vector3();
			const B = new Vector3();
			const T = new Vector3();
			const N = new Vector3(); // generate vertices, normals and uvs

			for (let i = 0; i <= tubularSegments; ++i) {
				// the radian "u" is used to calculate the position on the torus curve of the current tubular segement
				const u = i / tubularSegments * p * Math.PI * 2; // now we calculate two points. P1 is our current position on the curve, P2 is a little farther ahead.
				// these points are used to create a special "coordinate space", which is necessary to calculate the correct vertex positions

				calculatePositionOnCurve(u, p, q, radius, P1);
				calculatePositionOnCurve(u + 0.01, p, q, radius, P2); // calculate orthonormal basis

				T.subVectors(P2, P1);
				N.addVectors(P2, P1);
				B.crossVectors(T, N);
				N.crossVectors(B, T); // normalize B, N. T can be ignored, we don't use it

				B.normalize();
				N.normalize();

				for (let j = 0; j <= radialSegments; ++j) {
					// now calculate the vertices. they are nothing more than an extrusion of the torus curve.
					// because we extrude a shape in the xy-plane, there is no need to calculate a z-value.
					const v = j / radialSegments * Math.PI * 2;
					const cx = -tube * Math.cos(v);
					const cy = tube * Math.sin(v); // now calculate the final vertex position.
					// first we orient the extrusion with our basis vectos, then we add it to the current position on the curve

					vertex.x = P1.x + (cx * N.x + cy * B.x);
					vertex.y = P1.y + (cx * N.y + cy * B.y);
					vertex.z = P1.z + (cx * N.z + cy * B.z);
					vertices.push(vertex.x, vertex.y, vertex.z); // normal (P1 is always the center/origin of the extrusion, thus we can use it to calculate the normal)

					normal.subVectors(vertex, P1).normalize();
					normals.push(normal.x, normal.y, normal.z); // uv

					uvs.push(i / tubularSegments);
					uvs.push(j / radialSegments);
				}
			} // generate indices


			for (let j = 1; j <= tubularSegments; j++) {
				for (let i = 1; i <= radialSegments; i++) {
					// indices
					const a = (radialSegments + 1) * (j - 1) + (i - 1);
					const b = (radialSegments + 1) * j + (i - 1);
					const c = (radialSegments + 1) * j + i;
					const d = (radialSegments + 1) * (j - 1) + i; // faces

					indices.push(a, b, d);
					indices.push(b, c, d);
				}
			} // build geometry


			this.setIndex(indices);
			this.setAttribute('position', new Float32BufferAttribute(vertices, 3));
			this.setAttribute('normal', new Float32BufferAttribute(normals, 3));
			this.setAttribute('uv', new Float32BufferAttribute(uvs, 2)); // this function calculates the current position on the torus curve

			function calculatePositionOnCurve(u, p, q, radius, position) {
				const cu = Math.cos(u);
				const su = Math.sin(u);
				const quOverP = q / p * u;
				const cs = Math.cos(quOverP);
				position.x = radius * (2 + cs) * 0.5 * cu;
				position.y = radius * (2 + cs) * su * 0.5;
				position.z = radius * Math.sin(quOverP) * 0.5;
			}
		}

		static fromJSON(data) {
			return new TorusKnotGeometry(data.radius, data.tube, data.tubularSegments, data.radialSegments, data.p, data.q);
		}

	}

	class TubeGeometry extends BufferGeometry {
		constructor(path = new QuadraticBezierCurve3(new Vector3(-1, -1, 0), new Vector3(-1, 1, 0), new Vector3(1, 1, 0)), tubularSegments = 64, radius = 1, radialSegments = 8, closed = false) {
			super();
			this.type = 'TubeGeometry';
			this.parameters = {
				path: path,
				tubularSegments: tubularSegments,
				radius: radius,
				radialSegments: radialSegments,
				closed: closed
			};
			const frames = path.computeFrenetFrames(tubularSegments, closed); // expose internals

			this.tangents = frames.tangents;
			this.normals = frames.normals;
			this.binormals = frames.binormals; // helper variables

			const vertex = new Vector3();
			const normal = new Vector3();
			const uv = new Vector2();
			let P = new Vector3(); // buffer

			const vertices = [];
			const normals = [];
			const uvs = [];
			const indices = []; // create buffer data

			generateBufferData(); // build geometry

			this.setIndex(indices);
			this.setAttribute('position', new Float32BufferAttribute(vertices, 3));
			this.setAttribute('normal', new Float32BufferAttribute(normals, 3));
			this.setAttribute('uv', new Float32BufferAttribute(uvs, 2)); // functions

			function generateBufferData() {
				for (let i = 0; i < tubularSegments; i++) {
					generateSegment(i);
				} // if the geometry is not closed, generate the last row of vertices and normals
				// at the regular position on the given path
				//
				// if the geometry is closed, duplicate the first row of vertices and normals (uvs will differ)


				generateSegment(closed === false ? tubularSegments : 0); // uvs are generated in a separate function.
				// this makes it easy compute correct values for closed geometries

				generateUVs(); // finally create faces

				generateIndices();
			}

			function generateSegment(i) {
				// we use getPointAt to sample evenly distributed points from the given path
				P = path.getPointAt(i / tubularSegments, P); // retrieve corresponding normal and binormal

				const N = frames.normals[i];
				const B = frames.binormals[i]; // generate normals and vertices for the current segment

				for (let j = 0; j <= radialSegments; j++) {
					const v = j / radialSegments * Math.PI * 2;
					const sin = Math.sin(v);
					const cos = -Math.cos(v); // normal

					normal.x = cos * N.x + sin * B.x;
					normal.y = cos * N.y + sin * B.y;
					normal.z = cos * N.z + sin * B.z;
					normal.normalize();
					normals.push(normal.x, normal.y, normal.z); // vertex

					vertex.x = P.x + radius * normal.x;
					vertex.y = P.y + radius * normal.y;
					vertex.z = P.z + radius * normal.z;
					vertices.push(vertex.x, vertex.y, vertex.z);
				}
			}

			function generateIndices() {
				for (let j = 1; j <= tubularSegments; j++) {
					for (let i = 1; i <= radialSegments; i++) {
						const a = (radialSegments + 1) * (j - 1) + (i - 1);
						const b = (radialSegments + 1) * j + (i - 1);
						const c = (radialSegments + 1) * j + i;
						const d = (radialSegments + 1) * (j - 1) + i; // faces

						indices.push(a, b, d);
						indices.push(b, c, d);
					}
				}
			}

			function generateUVs() {
				for (let i = 0; i <= tubularSegments; i++) {
					for (let j = 0; j <= radialSegments; j++) {
						uv.x = i / tubularSegments;
						uv.y = j / radialSegments;
						uvs.push(uv.x, uv.y);
					}
				}
			}
		}

		toJSON() {
			const data = super.toJSON();
			data.path = this.parameters.path.toJSON();
			return data;
		}

		static fromJSON(data) {
			// This only works for built-in curves (e.g. CatmullRomCurve3).
			// User defined curves or instances of CurvePath will not be deserialized.
			return new TubeGeometry(new Curves[data.path.type]().fromJSON(data.path), data.tubularSegments, data.radius, data.radialSegments, data.closed);
		}

	}

	class WireframeGeometry extends BufferGeometry {
		constructor(geometry = null) {
			super();
			this.type = 'WireframeGeometry';
			this.parameters = {
				geometry: geometry
			};

			if (geometry !== null) {
				// buffer
				const vertices = [];
				const edges = new Set(); // helper variables

				const start = new Vector3();
				const end = new Vector3();

				if (geometry.index !== null) {
					// indexed BufferGeometry
					const position = geometry.attributes.position;
					const indices = geometry.index;
					let groups = geometry.groups;

					if (groups.length === 0) {
						groups = [{
							start: 0,
							count: indices.count,
							materialIndex: 0
						}];
					} // create a data structure that contains all eges without duplicates


					for (let o = 0, ol = groups.length; o < ol; ++o) {
						const group = groups[o];
						const groupStart = group.start;
						const groupCount = group.count;

						for (let i = groupStart, l = groupStart + groupCount; i < l; i += 3) {
							for (let j = 0; j < 3; j++) {
								const index1 = indices.getX(i + j);
								const index2 = indices.getX(i + (j + 1) % 3);
								start.fromBufferAttribute(position, index1);
								end.fromBufferAttribute(position, index2);

								if (isUniqueEdge(start, end, edges) === true) {
									vertices.push(start.x, start.y, start.z);
									vertices.push(end.x, end.y, end.z);
								}
							}
						}
					}
				} else {
					// non-indexed BufferGeometry
					const position = geometry.attributes.position;

					for (let i = 0, l = position.count / 3; i < l; i++) {
						for (let j = 0; j < 3; j++) {
							// three edges per triangle, an edge is represented as (index1, index2)
							// e.g. the first triangle has the following edges: (0,1),(1,2),(2,0)
							const index1 = 3 * i + j;
							const index2 = 3 * i + (j + 1) % 3;
							start.fromBufferAttribute(position, index1);
							end.fromBufferAttribute(position, index2);

							if (isUniqueEdge(start, end, edges) === true) {
								vertices.push(start.x, start.y, start.z);
								vertices.push(end.x, end.y, end.z);
							}
						}
					}
				} // build geometry


				this.setAttribute('position', new Float32BufferAttribute(vertices, 3));
			}
		}

	}

	function isUniqueEdge(start, end, edges) {
		const hash1 = `${start.x},${start.y},${start.z}-${end.x},${end.y},${end.z}`;
		const hash2 = `${end.x},${end.y},${end.z}-${start.x},${start.y},${start.z}`; // coincident edge

		if (edges.has(hash1) === true || edges.has(hash2) === true) {
			return false;
		} else {
			edges.add(hash1, hash2);
			return true;
		}
	}

	var Geometries = /*#__PURE__*/Object.freeze({
		__proto__: null,
		BoxGeometry: BoxGeometry,
		BoxBufferGeometry: BoxGeometry,
		CircleGeometry: CircleGeometry,
		CircleBufferGeometry: CircleGeometry,
		ConeGeometry: ConeGeometry,
		ConeBufferGeometry: ConeGeometry,
		CylinderGeometry: CylinderGeometry,
		CylinderBufferGeometry: CylinderGeometry,
		DodecahedronGeometry: DodecahedronGeometry,
		DodecahedronBufferGeometry: DodecahedronGeometry,
		EdgesGeometry: EdgesGeometry,
		ExtrudeGeometry: ExtrudeGeometry,
		ExtrudeBufferGeometry: ExtrudeGeometry,
		IcosahedronGeometry: IcosahedronGeometry,
		IcosahedronBufferGeometry: IcosahedronGeometry,
		LatheGeometry: LatheGeometry,
		LatheBufferGeometry: LatheGeometry,
		OctahedronGeometry: OctahedronGeometry,
		OctahedronBufferGeometry: OctahedronGeometry,
		PlaneGeometry: PlaneGeometry,
		PlaneBufferGeometry: PlaneGeometry,
		PolyhedronGeometry: PolyhedronGeometry,
		PolyhedronBufferGeometry: PolyhedronGeometry,
		RingGeometry: RingGeometry,
		RingBufferGeometry: RingGeometry,
		ShapeGeometry: ShapeGeometry,
		ShapeBufferGeometry: ShapeGeometry,
		SphereGeometry: SphereGeometry,
		SphereBufferGeometry: SphereGeometry,
		TetrahedronGeometry: TetrahedronGeometry,
		TetrahedronBufferGeometry: TetrahedronGeometry,
		TorusGeometry: TorusGeometry,
		TorusBufferGeometry: TorusGeometry,
		TorusKnotGeometry: TorusKnotGeometry,
		TorusKnotBufferGeometry: TorusKnotGeometry,
		TubeGeometry: TubeGeometry,
		TubeBufferGeometry: TubeGeometry,
		WireframeGeometry: WireframeGeometry
	});

	/**
	 * parameters = {
	 *	color: <THREE.Color>
	 * }
	 */

	class ShadowMaterial extends Material {
		constructor(parameters) {
			super();
			this.type = 'ShadowMaterial';
			this.color = new Color(0x000000);
			this.transparent = true;
			this.setValues(parameters);
		}

		copy(source) {
			super.copy(source);
			this.color.copy(source.color);
			return this;
		}

	}

	ShadowMaterial.prototype.isShadowMaterial = true;

	/**
	 * parameters = {
	 *	color: <hex>,
	 *	roughness: <float>,
	 *	metalness: <float>,
	 *	opacity: <float>,
	 *
	 *	map: new THREE.Texture( <Image> ),
	 *
	 *	lightMap: new THREE.Texture( <Image> ),
	 *	lightMapIntensity: <float>
	 *
	 *	aoMap: new THREE.Texture( <Image> ),
	 *	aoMapIntensity: <float>
	 *
	 *	emissive: <hex>,
	 *	emissiveIntensity: <float>
	 *	emissiveMap: new THREE.Texture( <Image> ),
	 *
	 *	bumpMap: new THREE.Texture( <Image> ),
	 *	bumpScale: <float>,
	 *
	 *	normalMap: new THREE.Texture( <Image> ),
	 *	normalMapType: THREE.TangentSpaceNormalMap,
	 *	normalScale: <Vector2>,
	 *
	 *	displacementMap: new THREE.Texture( <Image> ),
	 *	displacementScale: <float>,
	 *	displacementBias: <float>,
	 *
	 *	roughnessMap: new THREE.Texture( <Image> ),
	 *
	 *	metalnessMap: new THREE.Texture( <Image> ),
	 *
	 *	alphaMap: new THREE.Texture( <Image> ),
	 *
	 *	envMap: new THREE.CubeTexture( [posx, negx, posy, negy, posz, negz] ),
	 *	envMapIntensity: <float>
	 *
	 *	refractionRatio: <float>,
	 *
	 *	wireframe: <boolean>,
	 *	wireframeLinewidth: <float>,
	 *
	 *	flatShading: <bool>
	 * }
	 */

	class MeshStandardMaterial extends Material {
		constructor(parameters) {
			super();
			this.defines = {
				'STANDARD': ''
			};
			this.type = 'MeshStandardMaterial';
			this.color = new Color(0xffffff); // diffuse

			this.roughness = 1.0;
			this.metalness = 0.0;
			this.map = null;
			this.lightMap = null;
			this.lightMapIntensity = 1.0;
			this.aoMap = null;
			this.aoMapIntensity = 1.0;
			this.emissive = new Color(0x000000);
			this.emissiveIntensity = 1.0;
			this.emissiveMap = null;
			this.bumpMap = null;
			this.bumpScale = 1;
			this.normalMap = null;
			this.normalMapType = TangentSpaceNormalMap;
			this.normalScale = new Vector2(1, 1);
			this.displacementMap = null;
			this.displacementScale = 1;
			this.displacementBias = 0;
			this.roughnessMap = null;
			this.metalnessMap = null;
			this.alphaMap = null;
			this.envMap = null;
			this.envMapIntensity = 1.0;
			this.refractionRatio = 0.98;
			this.wireframe = false;
			this.wireframeLinewidth = 1;
			this.wireframeLinecap = 'round';
			this.wireframeLinejoin = 'round';
			this.flatShading = false;
			this.setValues(parameters);
		}

		copy(source) {
			super.copy(source);
			this.defines = {
				'STANDARD': ''
			};
			this.color.copy(source.color);
			this.roughness = source.roughness;
			this.metalness = source.metalness;
			this.map = source.map;
			this.lightMap = source.lightMap;
			this.lightMapIntensity = source.lightMapIntensity;
			this.aoMap = source.aoMap;
			this.aoMapIntensity = source.aoMapIntensity;
			this.emissive.copy(source.emissive);
			this.emissiveMap = source.emissiveMap;
			this.emissiveIntensity = source.emissiveIntensity;
			this.bumpMap = source.bumpMap;
			this.bumpScale = source.bumpScale;
			this.normalMap = source.normalMap;
			this.normalMapType = source.normalMapType;
			this.normalScale.copy(source.normalScale);
			this.displacementMap = source.displacementMap;
			this.displacementScale = source.displacementScale;
			this.displacementBias = source.displacementBias;
			this.roughnessMap = source.roughnessMap;
			this.metalnessMap = source.metalnessMap;
			this.alphaMap = source.alphaMap;
			this.envMap = source.envMap;
			this.envMapIntensity = source.envMapIntensity;
			this.refractionRatio = source.refractionRatio;
			this.wireframe = source.wireframe;
			this.wireframeLinewidth = source.wireframeLinewidth;
			this.wireframeLinecap = source.wireframeLinecap;
			this.wireframeLinejoin = source.wireframeLinejoin;
			this.flatShading = source.flatShading;
			return this;
		}

	}

	MeshStandardMaterial.prototype.isMeshStandardMaterial = true;

	/**
	 * parameters = {
	 *	clearcoat: <float>,
	 *	clearcoatMap: new THREE.Texture( <Image> ),
	 *	clearcoatRoughness: <float>,
	 *	clearcoatRoughnessMap: new THREE.Texture( <Image> ),
	 *	clearcoatNormalScale: <Vector2>,
	 *	clearcoatNormalMap: new THREE.Texture( <Image> ),
	 *
	 *	ior: <float>,
	 *	reflectivity: <float>,
	 *
	 *	sheen: <float>,
	 *	sheenTint: <Color>,
	 *	sheenRoughness: <float>,
	 *
	 *	transmission: <float>,
	 *	transmissionMap: new THREE.Texture( <Image> ),
	 *
	 *	thickness: <float>,
	 *	thicknessMap: new THREE.Texture( <Image> ),
	 *	attenuationDistance: <float>,
	 *	attenuationTint: <Color>,
	 *
	 *	specularIntensity: <float>,
	 *	specularIntensityhMap: new THREE.Texture( <Image> ),
	 *	specularTint: <Color>,
	 *	specularTintMap: new THREE.Texture( <Image> )
	 * }
	 */

	class MeshPhysicalMaterial extends MeshStandardMaterial {
		constructor(parameters) {
			super();
			this.defines = {
				'STANDARD': '',
				'PHYSICAL': ''
			};
			this.type = 'MeshPhysicalMaterial';
			this.clearcoatMap = null;
			this.clearcoatRoughness = 0.0;
			this.clearcoatRoughnessMap = null;
			this.clearcoatNormalScale = new Vector2(1, 1);
			this.clearcoatNormalMap = null;
			this.ior = 1.5;
			Object.defineProperty(this, 'reflectivity', {
				get: function () {
					return clamp(2.5 * (this.ior - 1) / (this.ior + 1), 0, 1);
				},
				set: function (reflectivity) {
					this.ior = (1 + 0.4 * reflectivity) / (1 - 0.4 * reflectivity);
				}
			});
			this.sheenTint = new Color(0x000000);
			this.sheenRoughness = 1.0;
			this.transmissionMap = null;
			this.thickness = 0.01;
			this.thicknessMap = null;
			this.attenuationDistance = 0.0;
			this.attenuationTint = new Color(1, 1, 1);
			this.specularIntensity = 1.0;
			this.specularIntensityMap = null;
			this.specularTint = new Color(1, 1, 1);
			this.specularTintMap = null;
			this._sheen = 0.0;
			this._clearcoat = 0;
			this._transmission = 0;
			this.setValues(parameters);
		}

		get sheen() {
			return this._sheen;
		}

		set sheen(value) {
			if (this._sheen > 0 !== value > 0) {
				this.version++;
			}

			this._sheen = value;
		}

		get clearcoat() {
			return this._clearcoat;
		}

		set clearcoat(value) {
			if (this._clearcoat > 0 !== value > 0) {
				this.version++;
			}

			this._clearcoat = value;
		}

		get transmission() {
			return this._transmission;
		}

		set transmission(value) {
			if (this._transmission > 0 !== value > 0) {
				this.version++;
			}

			this._transmission = value;
		}

		copy(source) {
			super.copy(source);
			this.defines = {
				'STANDARD': '',
				'PHYSICAL': ''
			};
			this.clearcoat = source.clearcoat;
			this.clearcoatMap = source.clearcoatMap;
			this.clearcoatRoughness = source.clearcoatRoughness;
			this.clearcoatRoughnessMap = source.clearcoatRoughnessMap;
			this.clearcoatNormalMap = source.clearcoatNormalMap;
			this.clearcoatNormalScale.copy(source.clearcoatNormalScale);
			this.ior = source.ior;
			this.sheen = source.sheen;
			this.sheenTint.copy(source.sheenTint);
			this.sheenRoughness = source.sheenRoughness;
			this.transmission = source.transmission;
			this.transmissionMap = source.transmissionMap;
			this.thickness = source.thickness;
			this.thicknessMap = source.thicknessMap;
			this.attenuationDistance = source.attenuationDistance;
			this.attenuationTint.copy(source.attenuationTint);
			this.specularIntensity = source.specularIntensity;
			this.specularIntensityMap = source.specularIntensityMap;
			this.specularTint.copy(source.specularTint);
			this.specularTintMap = source.specularTintMap;
			return this;
		}

	}

	MeshPhysicalMaterial.prototype.isMeshPhysicalMaterial = true;

	/**
	 * parameters = {
	 *	color: <hex>,
	 *	specular: <hex>,
	 *	shininess: <float>,
	 *	opacity: <float>,
	 *
	 *	map: new THREE.Texture( <Image> ),
	 *
	 *	lightMap: new THREE.Texture( <Image> ),
	 *	lightMapIntensity: <float>
	 *
	 *	aoMap: new THREE.Texture( <Image> ),
	 *	aoMapIntensity: <float>
	 *
	 *	emissive: <hex>,
	 *	emissiveIntensity: <float>
	 *	emissiveMap: new THREE.Texture( <Image> ),
	 *
	 *	bumpMap: new THREE.Texture( <Image> ),
	 *	bumpScale: <float>,
	 *
	 *	normalMap: new THREE.Texture( <Image> ),
	 *	normalMapType: THREE.TangentSpaceNormalMap,
	 *	normalScale: <Vector2>,
	 *
	 *	displacementMap: new THREE.Texture( <Image> ),
	 *	displacementScale: <float>,
	 *	displacementBias: <float>,
	 *
	 *	specularMap: new THREE.Texture( <Image> ),
	 *
	 *	alphaMap: new THREE.Texture( <Image> ),
	 *
	 *	envMap: new THREE.CubeTexture( [posx, negx, posy, negy, posz, negz] ),
	 *	combine: THREE.MultiplyOperation,
	 *	reflectivity: <float>,
	 *	refractionRatio: <float>,
	 *
	 *	wireframe: <boolean>,
	 *	wireframeLinewidth: <float>,
	 *
	 *	flatShading: <bool>
	 * }
	 */

	class MeshPhongMaterial extends Material {
		constructor(parameters) {
			super();
			this.type = 'MeshPhongMaterial';
			this.color = new Color(0xffffff); // diffuse

			this.specular = new Color(0x111111);
			this.shininess = 30;
			this.map = null;
			this.lightMap = null;
			this.lightMapIntensity = 1.0;
			this.aoMap = null;
			this.aoMapIntensity = 1.0;
			this.emissive = new Color(0x000000);
			this.emissiveIntensity = 1.0;
			this.emissiveMap = null;
			this.bumpMap = null;
			this.bumpScale = 1;
			this.normalMap = null;
			this.normalMapType = TangentSpaceNormalMap;
			this.normalScale = new Vector2(1, 1);
			this.displacementMap = null;
			this.displacementScale = 1;
			this.displacementBias = 0;
			this.specularMap = null;
			this.alphaMap = null;
			this.envMap = null;
			this.combine = MultiplyOperation;
			this.reflectivity = 1;
			this.refractionRatio = 0.98;
			this.wireframe = false;
			this.wireframeLinewidth = 1;
			this.wireframeLinecap = 'round';
			this.wireframeLinejoin = 'round';
			this.flatShading = false;
			this.setValues(parameters);
		}

		copy(source) {
			super.copy(source);
			this.color.copy(source.color);
			this.specular.copy(source.specular);
			this.shininess = source.shininess;
			this.map = source.map;
			this.lightMap = source.lightMap;
			this.lightMapIntensity = source.lightMapIntensity;
			this.aoMap = source.aoMap;
			this.aoMapIntensity = source.aoMapIntensity;
			this.emissive.copy(source.emissive);
			this.emissiveMap = source.emissiveMap;
			this.emissiveIntensity = source.emissiveIntensity;
			this.bumpMap = source.bumpMap;
			this.bumpScale = source.bumpScale;
			this.normalMap = source.normalMap;
			this.normalMapType = source.normalMapType;
			this.normalScale.copy(source.normalScale);
			this.displacementMap = source.displacementMap;
			this.displacementScale = source.displacementScale;
			this.displacementBias = source.displacementBias;
			this.specularMap = source.specularMap;
			this.alphaMap = source.alphaMap;
			this.envMap = source.envMap;
			this.combine = source.combine;
			this.reflectivity = source.reflectivity;
			this.refractionRatio = source.refractionRatio;
			this.wireframe = source.wireframe;
			this.wireframeLinewidth = source.wireframeLinewidth;
			this.wireframeLinecap = source.wireframeLinecap;
			this.wireframeLinejoin = source.wireframeLinejoin;
			this.flatShading = source.flatShading;
			return this;
		}

	}

	MeshPhongMaterial.prototype.isMeshPhongMaterial = true;

	/**
	 * parameters = {
	 *	color: <hex>,
	 *
	 *	map: new THREE.Texture( <Image> ),
	 *	gradientMap: new THREE.Texture( <Image> ),
	 *
	 *	lightMap: new THREE.Texture( <Image> ),
	 *	lightMapIntensity: <float>
	 *
	 *	aoMap: new THREE.Texture( <Image> ),
	 *	aoMapIntensity: <float>
	 *
	 *	emissive: <hex>,
	 *	emissiveIntensity: <float>
	 *	emissiveMap: new THREE.Texture( <Image> ),
	 *
	 *	bumpMap: new THREE.Texture( <Image> ),
	 *	bumpScale: <float>,
	 *
	 *	normalMap: new THREE.Texture( <Image> ),
	 *	normalMapType: THREE.TangentSpaceNormalMap,
	 *	normalScale: <Vector2>,
	 *
	 *	displacementMap: new THREE.Texture( <Image> ),
	 *	displacementScale: <float>,
	 *	displacementBias: <float>,
	 *
	 *	alphaMap: new THREE.Texture( <Image> ),
	 *
	 *	wireframe: <boolean>,
	 *	wireframeLinewidth: <float>,
	 *
	 * }
	 */

	class MeshToonMaterial extends Material {
		constructor(parameters) {
			super();
			this.defines = {
				'TOON': ''
			};
			this.type = 'MeshToonMaterial';
			this.color = new Color(0xffffff);
			this.map = null;
			this.gradientMap = null;
			this.lightMap = null;
			this.lightMapIntensity = 1.0;
			this.aoMap = null;
			this.aoMapIntensity = 1.0;
			this.emissive = new Color(0x000000);
			this.emissiveIntensity = 1.0;
			this.emissiveMap = null;
			this.bumpMap = null;
			this.bumpScale = 1;
			this.normalMap = null;
			this.normalMapType = TangentSpaceNormalMap;
			this.normalScale = new Vector2(1, 1);
			this.displacementMap = null;
			this.displacementScale = 1;
			this.displacementBias = 0;
			this.alphaMap = null;
			this.wireframe = false;
			this.wireframeLinewidth = 1;
			this.wireframeLinecap = 'round';
			this.wireframeLinejoin = 'round';
			this.setValues(parameters);
		}

		copy(source) {
			super.copy(source);
			this.color.copy(source.color);
			this.map = source.map;
			this.gradientMap = source.gradientMap;
			this.lightMap = source.lightMap;
			this.lightMapIntensity = source.lightMapIntensity;
			this.aoMap = source.aoMap;
			this.aoMapIntensity = source.aoMapIntensity;
			this.emissive.copy(source.emissive);
			this.emissiveMap = source.emissiveMap;
			this.emissiveIntensity = source.emissiveIntensity;
			this.bumpMap = source.bumpMap;
			this.bumpScale = source.bumpScale;
			this.normalMap = source.normalMap;
			this.normalMapType = source.normalMapType;
			this.normalScale.copy(source.normalScale);
			this.displacementMap = source.displacementMap;
			this.displacementScale = source.displacementScale;
			this.displacementBias = source.displacementBias;
			this.alphaMap = source.alphaMap;
			this.wireframe = source.wireframe;
			this.wireframeLinewidth = source.wireframeLinewidth;
			this.wireframeLinecap = source.wireframeLinecap;
			this.wireframeLinejoin = source.wireframeLinejoin;
			return this;
		}

	}

	MeshToonMaterial.prototype.isMeshToonMaterial = true;

	/**
	 * parameters = {
	 *	opacity: <float>,
	 *
	 *	bumpMap: new THREE.Texture( <Image> ),
	 *	bumpScale: <float>,
	 *
	 *	normalMap: new THREE.Texture( <Image> ),
	 *	normalMapType: THREE.TangentSpaceNormalMap,
	 *	normalScale: <Vector2>,
	 *
	 *	displacementMap: new THREE.Texture( <Image> ),
	 *	displacementScale: <float>,
	 *	displacementBias: <float>,
	 *
	 *	wireframe: <boolean>,
	 *	wireframeLinewidth: <float>
	 *
	 *	flatShading: <bool>
	 * }
	 */

	class MeshNormalMaterial extends Material {
		constructor(parameters) {
			super();
			this.type = 'MeshNormalMaterial';
			this.bumpMap = null;
			this.bumpScale = 1;
			this.normalMap = null;
			this.normalMapType = TangentSpaceNormalMap;
			this.normalScale = new Vector2(1, 1);
			this.displacementMap = null;
			this.displacementScale = 1;
			this.displacementBias = 0;
			this.wireframe = false;
			this.wireframeLinewidth = 1;
			this.fog = false;
			this.flatShading = false;
			this.setValues(parameters);
		}

		copy(source) {
			super.copy(source);
			this.bumpMap = source.bumpMap;
			this.bumpScale = source.bumpScale;
			this.normalMap = source.normalMap;
			this.normalMapType = source.normalMapType;
			this.normalScale.copy(source.normalScale);
			this.displacementMap = source.displacementMap;
			this.displacementScale = source.displacementScale;
			this.displacementBias = source.displacementBias;
			this.wireframe = source.wireframe;
			this.wireframeLinewidth = source.wireframeLinewidth;
			this.flatShading = source.flatShading;
			return this;
		}

	}

	MeshNormalMaterial.prototype.isMeshNormalMaterial = true;

	/**
	 * parameters = {
	 *	color: <hex>,
	 *	opacity: <float>,
	 *
	 *	map: new THREE.Texture( <Image> ),
	 *
	 *	lightMap: new THREE.Texture( <Image> ),
	 *	lightMapIntensity: <float>
	 *
	 *	aoMap: new THREE.Texture( <Image> ),
	 *	aoMapIntensity: <float>
	 *
	 *	emissive: <hex>,
	 *	emissiveIntensity: <float>
	 *	emissiveMap: new THREE.Texture( <Image> ),
	 *
	 *	specularMap: new THREE.Texture( <Image> ),
	 *
	 *	alphaMap: new THREE.Texture( <Image> ),
	 *
	 *	envMap: new THREE.CubeTexture( [posx, negx, posy, negy, posz, negz] ),
	 *	combine: THREE.Multiply,
	 *	reflectivity: <float>,
	 *	refractionRatio: <float>,
	 *
	 *	wireframe: <boolean>,
	 *	wireframeLinewidth: <float>,
	 *
	 * }
	 */

	class MeshLambertMaterial extends Material {
		constructor(parameters) {
			super();
			this.type = 'MeshLambertMaterial';
			this.color = new Color(0xffffff); // diffuse

			this.map = null;
			this.lightMap = null;
			this.lightMapIntensity = 1.0;
			this.aoMap = null;
			this.aoMapIntensity = 1.0;
			this.emissive = new Color(0x000000);
			this.emissiveIntensity = 1.0;
			this.emissiveMap = null;
			this.specularMap = null;
			this.alphaMap = null;
			this.envMap = null;
			this.combine = MultiplyOperation;
			this.reflectivity = 1;
			this.refractionRatio = 0.98;
			this.wireframe = false;
			this.wireframeLinewidth = 1;
			this.wireframeLinecap = 'round';
			this.wireframeLinejoin = 'round';
			this.setValues(parameters);
		}

		copy(source) {
			super.copy(source);
			this.color.copy(source.color);
			this.map = source.map;
			this.lightMap = source.lightMap;
			this.lightMapIntensity = source.lightMapIntensity;
			this.aoMap = source.aoMap;
			this.aoMapIntensity = source.aoMapIntensity;
			this.emissive.copy(source.emissive);
			this.emissiveMap = source.emissiveMap;
			this.emissiveIntensity = source.emissiveIntensity;
			this.specularMap = source.specularMap;
			this.alphaMap = source.alphaMap;
			this.envMap = source.envMap;
			this.combine = source.combine;
			this.reflectivity = source.reflectivity;
			this.refractionRatio = source.refractionRatio;
			this.wireframe = source.wireframe;
			this.wireframeLinewidth = source.wireframeLinewidth;
			this.wireframeLinecap = source.wireframeLinecap;
			this.wireframeLinejoin = source.wireframeLinejoin;
			return this;
		}

	}

	MeshLambertMaterial.prototype.isMeshLambertMaterial = true;

	/**
	 * parameters = {
	 *	color: <hex>,
	 *	opacity: <float>,
	 *
	 *	matcap: new THREE.Texture( <Image> ),
	 *
	 *	map: new THREE.Texture( <Image> ),
	 *
	 *	bumpMap: new THREE.Texture( <Image> ),
	 *	bumpScale: <float>,
	 *
	 *	normalMap: new THREE.Texture( <Image> ),
	 *	normalMapType: THREE.TangentSpaceNormalMap,
	 *	normalScale: <Vector2>,
	 *
	 *	displacementMap: new THREE.Texture( <Image> ),
	 *	displacementScale: <float>,
	 *	displacementBias: <float>,
	 *
	 *	alphaMap: new THREE.Texture( <Image> ),
	 *
	 *	flatShading: <bool>
	 * }
	 */

	class MeshMatcapMaterial extends Material {
		constructor(parameters) {
			super();
			this.defines = {
				'MATCAP': ''
			};
			this.type = 'MeshMatcapMaterial';
			this.color = new Color(0xffffff); // diffuse

			this.matcap = null;
			this.map = null;
			this.bumpMap = null;
			this.bumpScale = 1;
			this.normalMap = null;
			this.normalMapType = TangentSpaceNormalMap;
			this.normalScale = new Vector2(1, 1);
			this.displacementMap = null;
			this.displacementScale = 1;
			this.displacementBias = 0;
			this.alphaMap = null;
			this.flatShading = false;
			this.setValues(parameters);
		}

		copy(source) {
			super.copy(source);
			this.defines = {
				'MATCAP': ''
			};
			this.color.copy(source.color);
			this.matcap = source.matcap;
			this.map = source.map;
			this.bumpMap = source.bumpMap;
			this.bumpScale = source.bumpScale;
			this.normalMap = source.normalMap;
			this.normalMapType = source.normalMapType;
			this.normalScale.copy(source.normalScale);
			this.displacementMap = source.displacementMap;
			this.displacementScale = source.displacementScale;
			this.displacementBias = source.displacementBias;
			this.alphaMap = source.alphaMap;
			this.flatShading = source.flatShading;
			return this;
		}

	}

	MeshMatcapMaterial.prototype.isMeshMatcapMaterial = true;

	/**
	 * parameters = {
	 *	color: <hex>,
	 *	opacity: <float>,
	 *
	 *	linewidth: <float>,
	 *
	 *	scale: <float>,
	 *	dashSize: <float>,
	 *	gapSize: <float>
	 * }
	 */

	class LineDashedMaterial extends LineBasicMaterial {
		constructor(parameters) {
			super();
			this.type = 'LineDashedMaterial';
			this.scale = 1;
			this.dashSize = 3;
			this.gapSize = 1;
			this.setValues(parameters);
		}

		copy(source) {
			super.copy(source);
			this.scale = source.scale;
			this.dashSize = source.dashSize;
			this.gapSize = source.gapSize;
			return this;
		}

	}

	LineDashedMaterial.prototype.isLineDashedMaterial = true;

	var Materials = /*#__PURE__*/Object.freeze({
		__proto__: null,
		ShadowMaterial: ShadowMaterial,
		SpriteMaterial: SpriteMaterial,
		RawShaderMaterial: RawShaderMaterial,
		ShaderMaterial: ShaderMaterial,
		PointsMaterial: PointsMaterial,
		MeshPhysicalMaterial: MeshPhysicalMaterial,
		MeshStandardMaterial: MeshStandardMaterial,
		MeshPhongMaterial: MeshPhongMaterial,
		MeshToonMaterial: MeshToonMaterial,
		MeshNormalMaterial: MeshNormalMaterial,
		MeshLambertMaterial: MeshLambertMaterial,
		MeshDepthMaterial: MeshDepthMaterial,
		MeshDistanceMaterial: MeshDistanceMaterial,
		MeshBasicMaterial: MeshBasicMaterial,
		MeshMatcapMaterial: MeshMatcapMaterial,
		LineDashedMaterial: LineDashedMaterial,
		LineBasicMaterial: LineBasicMaterial,
		Material: Material
	});

	const AnimationUtils = {
		// same as Array.prototype.slice, but also works on typed arrays
		arraySlice: function (array, from, to) {
			if (AnimationUtils.isTypedArray(array)) {
				// in ios9 array.subarray(from, undefined) will return empty array
				// but array.subarray(from) or array.subarray(from, len) is correct
				return new array.constructor(array.subarray(from, to !== undefined ? to : array.length));
			}

			return array.slice(from, to);
		},
		// converts an array to a specific type
		convertArray: function (array, type, forceClone) {
			if (!array || // let 'undefined' and 'null' pass
			!forceClone && array.constructor === type) return array;

			if (typeof type.BYTES_PER_ELEMENT === 'number') {
				return new type(array); // create typed array
			}

			return Array.prototype.slice.call(array); // create Array
		},
		isTypedArray: function (object) {
			return ArrayBuffer.isView(object) && !(object instanceof DataView);
		},
		// returns an array by which times and values can be sorted
		getKeyframeOrder: function (times) {
			function compareTime(i, j) {
				return times[i] - times[j];
			}

			const n = times.length;
			const result = new Array(n);

			for (let i = 0; i !== n; ++i) result[i] = i;

			result.sort(compareTime);
			return result;
		},
		// uses the array previously returned by 'getKeyframeOrder' to sort data
		sortedArray: function (values, stride, order) {
			const nValues = values.length;
			const result = new values.constructor(nValues);

			for (let i = 0, dstOffset = 0; dstOffset !== nValues; ++i) {
				const srcOffset = order[i] * stride;

				for (let j = 0; j !== stride; ++j) {
					result[dstOffset++] = values[srcOffset + j];
				}
			}

			return result;
		},
		// function for parsing AOS keyframe formats
		flattenJSON: function (jsonKeys, times, values, valuePropertyName) {
			let i = 1,
					key = jsonKeys[0];

			while (key !== undefined && key[valuePropertyName] === undefined) {
				key = jsonKeys[i++];
			}

			if (key === undefined) return; // no data

			let value = key[valuePropertyName];
			if (value === undefined) return; // no data

			if (Array.isArray(value)) {
				do {
					value = key[valuePropertyName];

					if (value !== undefined) {
						times.push(key.time);
						values.push.apply(values, value); // push all elements
					}

					key = jsonKeys[i++];
				} while (key !== undefined);
			} else if (value.toArray !== undefined) {
				// ...assume THREE.Math-ish
				do {
					value = key[valuePropertyName];

					if (value !== undefined) {
						times.push(key.time);
						value.toArray(values, values.length);
					}

					key = jsonKeys[i++];
				} while (key !== undefined);
			} else {
				// otherwise push as-is
				do {
					value = key[valuePropertyName];

					if (value !== undefined) {
						times.push(key.time);
						values.push(value);
					}

					key = jsonKeys[i++];
				} while (key !== undefined);
			}
		},
		subclip: function (sourceClip, name, startFrame, endFrame, fps = 30) {
			const clip = sourceClip.clone();
			clip.name = name;
			const tracks = [];

			for (let i = 0; i < clip.tracks.length; ++i) {
				const track = clip.tracks[i];
				const valueSize = track.getValueSize();
				const times = [];
				const values = [];

				for (let j = 0; j < track.times.length; ++j) {
					const frame = track.times[j] * fps;
					if (frame < startFrame || frame >= endFrame) continue;
					times.push(track.times[j]);

					for (let k = 0; k < valueSize; ++k) {
						values.push(track.values[j * valueSize + k]);
					}
				}

				if (times.length === 0) continue;
				track.times = AnimationUtils.convertArray(times, track.times.constructor);
				track.values = AnimationUtils.convertArray(values, track.values.constructor);
				tracks.push(track);
			}

			clip.tracks = tracks; // find minimum .times value across all tracks in the trimmed clip

			let minStartTime = Infinity;

			for (let i = 0; i < clip.tracks.length; ++i) {
				if (minStartTime > clip.tracks[i].times[0]) {
					minStartTime = clip.tracks[i].times[0];
				}
			} // shift all tracks such that clip begins at t=0


			for (let i = 0; i < clip.tracks.length; ++i) {
				clip.tracks[i].shift(-1 * minStartTime);
			}

			clip.resetDuration();
			return clip;
		},
		makeClipAdditive: function (targetClip, referenceFrame = 0, referenceClip = targetClip, fps = 30) {
			if (fps <= 0) fps = 30;
			const numTracks = referenceClip.tracks.length;
			const referenceTime = referenceFrame / fps; // Make each track's values relative to the values at the reference frame

			for (let i = 0; i < numTracks; ++i) {
				const referenceTrack = referenceClip.tracks[i];
				const referenceTrackType = referenceTrack.ValueTypeName; // Skip this track if it's non-numeric

				if (referenceTrackType === 'bool' || referenceTrackType === 'string') continue; // Find the track in the target clip whose name and type matches the reference track

				const targetTrack = targetClip.tracks.find(function (track) {
					return track.name === referenceTrack.name && track.ValueTypeName === referenceTrackType;
				});
				if (targetTrack === undefined) continue;
				let referenceOffset = 0;
				const referenceValueSize = referenceTrack.getValueSize();

				if (referenceTrack.createInterpolant.isInterpolantFactoryMethodGLTFCubicSpline) {
					referenceOffset = referenceValueSize / 3;
				}

				let targetOffset = 0;
				const targetValueSize = targetTrack.getValueSize();

				if (targetTrack.createInterpolant.isInterpolantFactoryMethodGLTFCubicSpline) {
					targetOffset = targetValueSize / 3;
				}

				const lastIndex = referenceTrack.times.length - 1;
				let referenceValue; // Find the value to subtract out of the track

				if (referenceTime <= referenceTrack.times[0]) {
					// Reference frame is earlier than the first keyframe, so just use the first keyframe
					const startIndex = referenceOffset;
					const endIndex = referenceValueSize - referenceOffset;
					referenceValue = AnimationUtils.arraySlice(referenceTrack.values, startIndex, endIndex);
				} else if (referenceTime >= referenceTrack.times[lastIndex]) {
					// Reference frame is after the last keyframe, so just use the last keyframe
					const startIndex = lastIndex * referenceValueSize + referenceOffset;
					const endIndex = startIndex + referenceValueSize - referenceOffset;
					referenceValue = AnimationUtils.arraySlice(referenceTrack.values, startIndex, endIndex);
				} else {
					// Interpolate to the reference value
					const interpolant = referenceTrack.createInterpolant();
					const startIndex = referenceOffset;
					const endIndex = referenceValueSize - referenceOffset;
					interpolant.evaluate(referenceTime);
					referenceValue = AnimationUtils.arraySlice(interpolant.resultBuffer, startIndex, endIndex);
				} // Conjugate the quaternion


				if (referenceTrackType === 'quaternion') {
					const referenceQuat = new Quaternion().fromArray(referenceValue).normalize().conjugate();
					referenceQuat.toArray(referenceValue);
				} // Subtract the reference value from all of the track values


				const numTimes = targetTrack.times.length;

				for (let j = 0; j < numTimes; ++j) {
					const valueStart = j * targetValueSize + targetOffset;

					if (referenceTrackType === 'quaternion') {
						// Multiply the conjugate for quaternion track types
						Quaternion.multiplyQuaternionsFlat(targetTrack.values, valueStart, referenceValue, 0, targetTrack.values, valueStart);
					} else {
						const valueEnd = targetValueSize - targetOffset * 2; // Subtract each value for all other numeric track types

						for (let k = 0; k < valueEnd; ++k) {
							targetTrack.values[valueStart + k] -= referenceValue[k];
						}
					}
				}
			}

			targetClip.blendMode = AdditiveAnimationBlendMode;
			return targetClip;
		}
	};

	/**
	 * Abstract base class of interpolants over parametric samples.
	 *
	 * The parameter domain is one dimensional, typically the time or a path
	 * along a curve defined by the data.
	 *
	 * The sample values can have any dimensionality and derived classes may
	 * apply special interpretations to the data.
	 *
	 * This class provides the interval seek in a Template Method, deferring
	 * the actual interpolation to derived classes.
	 *
	 * Time complexity is O(1) for linear access crossing at most two points
	 * and O(log N) for random access, where N is the number of positions.
	 *
	 * References:
	 *
	 * 		http://www.oodesign.com/template-method-pattern.html
	 *
	 */
	class Interpolant {
		constructor(parameterPositions, sampleValues, sampleSize, resultBuffer) {
			this.parameterPositions = parameterPositions;
			this._cachedIndex = 0;
			this.resultBuffer = resultBuffer !== undefined ? resultBuffer : new sampleValues.constructor(sampleSize);
			this.sampleValues = sampleValues;
			this.valueSize = sampleSize;
			this.settings = null;
			this.DefaultSettings_ = {};
		}

		evaluate(t) {
			const pp = this.parameterPositions;
			let i1 = this._cachedIndex,
					t1 = pp[i1],
					t0 = pp[i1 - 1];

			validate_interval: {
				seek: {
					let right;

					linear_scan: {
						//- See http://jsperf.com/comparison-to-undefined/3
						//- slower code:
						//-
						//- 				if ( t >= t1 || t1 === undefined ) {
						forward_scan: if (!(t < t1)) {
							for (let giveUpAt = i1 + 2;;) {
								if (t1 === undefined) {
									if (t < t0) break forward_scan; // after end

									i1 = pp.length;
									this._cachedIndex = i1;
									return this.afterEnd_(i1 - 1, t, t0);
								}

								if (i1 === giveUpAt) break; // this loop

								t0 = t1;
								t1 = pp[++i1];

								if (t < t1) {
									// we have arrived at the sought interval
									break seek;
								}
							} // prepare binary search on the right side of the index


							right = pp.length;
							break linear_scan;
						} //- slower code:
						//-					if ( t < t0 || t0 === undefined ) {


						if (!(t >= t0)) {
							// looping?
							const t1global = pp[1];

							if (t < t1global) {
								i1 = 2; // + 1, using the scan for the details

								t0 = t1global;
							} // linear reverse scan


							for (let giveUpAt = i1 - 2;;) {
								if (t0 === undefined) {
									// before start
									this._cachedIndex = 0;
									return this.beforeStart_(0, t, t1);
								}

								if (i1 === giveUpAt) break; // this loop

								t1 = t0;
								t0 = pp[--i1 - 1];

								if (t >= t0) {
									// we have arrived at the sought interval
									break seek;
								}
							} // prepare binary search on the left side of the index


							right = i1;
							i1 = 0;
							break linear_scan;
						} // the interval is valid


						break validate_interval;
					} // linear scan
					// binary search


					while (i1 < right) {
						const mid = i1 + right >>> 1;

						if (t < pp[mid]) {
							right = mid;
						} else {
							i1 = mid + 1;
						}
					}

					t1 = pp[i1];
					t0 = pp[i1 - 1]; // check boundary cases, again

					if (t0 === undefined) {
						this._cachedIndex = 0;
						return this.beforeStart_(0, t, t1);
					}

					if (t1 === undefined) {
						i1 = pp.length;
						this._cachedIndex = i1;
						return this.afterEnd_(i1 - 1, t0, t);
					}
				} // seek


				this._cachedIndex = i1;
				this.intervalChanged_(i1, t0, t1);
			} // validate_interval


			return this.interpolate_(i1, t0, t, t1);
		}

		getSettings_() {
			return this.settings || this.DefaultSettings_;
		}

		copySampleValue_(index) {
			// copies a sample value to the result buffer
			const result = this.resultBuffer,
						values = this.sampleValues,
						stride = this.valueSize,
						offset = index * stride;

			for (let i = 0; i !== stride; ++i) {
				result[i] = values[offset + i];
			}

			return result;
		} // Template methods for derived classes:


		interpolate_() {
			throw new Error('call to abstract method'); // implementations shall return this.resultBuffer
		}

		intervalChanged_() {// empty
		}

	} // ALIAS DEFINITIONS


	Interpolant.prototype.beforeStart_ = Interpolant.prototype.copySampleValue_;
	Interpolant.prototype.afterEnd_ = Interpolant.prototype.copySampleValue_;

	/**
	 * Fast and simple cubic spline interpolant.
	 *
	 * It was derived from a Hermitian construction setting the first derivative
	 * at each sample position to the linear slope between neighboring positions
	 * over their parameter interval.
	 */

	class CubicInterpolant extends Interpolant {
		constructor(parameterPositions, sampleValues, sampleSize, resultBuffer) {
			super(parameterPositions, sampleValues, sampleSize, resultBuffer);
			this._weightPrev = -0;
			this._offsetPrev = -0;
			this._weightNext = -0;
			this._offsetNext = -0;
			this.DefaultSettings_ = {
				endingStart: ZeroCurvatureEnding,
				endingEnd: ZeroCurvatureEnding
			};
		}

		intervalChanged_(i1, t0, t1) {
			const pp = this.parameterPositions;
			let iPrev = i1 - 2,
					iNext = i1 + 1,
					tPrev = pp[iPrev],
					tNext = pp[iNext];

			if (tPrev === undefined) {
				switch (this.getSettings_().endingStart) {
					case ZeroSlopeEnding:
						// f'(t0) = 0
						iPrev = i1;
						tPrev = 2 * t0 - t1;
						break;

					case WrapAroundEnding:
						// use the other end of the curve
						iPrev = pp.length - 2;
						tPrev = t0 + pp[iPrev] - pp[iPrev + 1];
						break;

					default:
						// ZeroCurvatureEnding
						// f''(t0) = 0 a.k.a. Natural Spline
						iPrev = i1;
						tPrev = t1;
				}
			}

			if (tNext === undefined) {
				switch (this.getSettings_().endingEnd) {
					case ZeroSlopeEnding:
						// f'(tN) = 0
						iNext = i1;
						tNext = 2 * t1 - t0;
						break;

					case WrapAroundEnding:
						// use the other end of the curve
						iNext = 1;
						tNext = t1 + pp[1] - pp[0];
						break;

					default:
						// ZeroCurvatureEnding
						// f''(tN) = 0, a.k.a. Natural Spline
						iNext = i1 - 1;
						tNext = t0;
				}
			}

			const halfDt = (t1 - t0) * 0.5,
						stride = this.valueSize;
			this._weightPrev = halfDt / (t0 - tPrev);
			this._weightNext = halfDt / (tNext - t1);
			this._offsetPrev = iPrev * stride;
			this._offsetNext = iNext * stride;
		}

		interpolate_(i1, t0, t, t1) {
			const result = this.resultBuffer,
						values = this.sampleValues,
						stride = this.valueSize,
						o1 = i1 * stride,
						o0 = o1 - stride,
						oP = this._offsetPrev,
						oN = this._offsetNext,
						wP = this._weightPrev,
						wN = this._weightNext,
						p = (t - t0) / (t1 - t0),
						pp = p * p,
						ppp = pp * p; // evaluate polynomials

			const sP = -wP * ppp + 2 * wP * pp - wP * p;
			const s0 = (1 + wP) * ppp + (-1.5 - 2 * wP) * pp + (-0.5 + wP) * p + 1;
			const s1 = (-1 - wN) * ppp + (1.5 + wN) * pp + 0.5 * p;
			const sN = wN * ppp - wN * pp; // combine data linearly

			for (let i = 0; i !== stride; ++i) {
				result[i] = sP * values[oP + i] + s0 * values[o0 + i] + s1 * values[o1 + i] + sN * values[oN + i];
			}

			return result;
		}

	}

	class LinearInterpolant extends Interpolant {
		constructor(parameterPositions, sampleValues, sampleSize, resultBuffer) {
			super(parameterPositions, sampleValues, sampleSize, resultBuffer);
		}

		interpolate_(i1, t0, t, t1) {
			const result = this.resultBuffer,
						values = this.sampleValues,
						stride = this.valueSize,
						offset1 = i1 * stride,
						offset0 = offset1 - stride,
						weight1 = (t - t0) / (t1 - t0),
						weight0 = 1 - weight1;

			for (let i = 0; i !== stride; ++i) {
				result[i] = values[offset0 + i] * weight0 + values[offset1 + i] * weight1;
			}

			return result;
		}

	}

	/**
	 *
	 * Interpolant that evaluates to the sample value at the position preceeding
	 * the parameter.
	 */

	class DiscreteInterpolant extends Interpolant {
		constructor(parameterPositions, sampleValues, sampleSize, resultBuffer) {
			super(parameterPositions, sampleValues, sampleSize, resultBuffer);
		}

		interpolate_(i1
		/*, t0, t, t1 */
		) {
			return this.copySampleValue_(i1 - 1);
		}

	}

	class KeyframeTrack {
		constructor(name, times, values, interpolation) {
			if (name === undefined) throw new Error('THREE.KeyframeTrack: track name is undefined');
			if (times === undefined || times.length === 0) throw new Error('THREE.KeyframeTrack: no keyframes in track named ' + name);
			this.name = name;
			this.times = AnimationUtils.convertArray(times, this.TimeBufferType);
			this.values = AnimationUtils.convertArray(values, this.ValueBufferType);
			this.setInterpolation(interpolation || this.DefaultInterpolation);
		} // Serialization (in static context, because of constructor invocation
		// and automatic invocation of .toJSON):


		static toJSON(track) {
			const trackType = track.constructor;
			let json; // derived classes can define a static toJSON method

			if (trackType.toJSON !== this.toJSON) {
				json = trackType.toJSON(track);
			} else {
				// by default, we assume the data can be serialized as-is
				json = {
					'name': track.name,
					'times': AnimationUtils.convertArray(track.times, Array),
					'values': AnimationUtils.convertArray(track.values, Array)
				};
				const interpolation = track.getInterpolation();

				if (interpolation !== track.DefaultInterpolation) {
					json.interpolation = interpolation;
				}
			}

			json.type = track.ValueTypeName; // mandatory

			return json;
		}

		InterpolantFactoryMethodDiscrete(result) {
			return new DiscreteInterpolant(this.times, this.values, this.getValueSize(), result);
		}

		InterpolantFactoryMethodLinear(result) {
			return new LinearInterpolant(this.times, this.values, this.getValueSize(), result);
		}

		InterpolantFactoryMethodSmooth(result) {
			return new CubicInterpolant(this.times, this.values, this.getValueSize(), result);
		}

		setInterpolation(interpolation) {
			let factoryMethod;

			switch (interpolation) {
				case InterpolateDiscrete:
					factoryMethod = this.InterpolantFactoryMethodDiscrete;
					break;

				case InterpolateLinear:
					factoryMethod = this.InterpolantFactoryMethodLinear;
					break;

				case InterpolateSmooth:
					factoryMethod = this.InterpolantFactoryMethodSmooth;
					break;
			}

			if (factoryMethod === undefined) {
				const message = 'unsupported interpolation for ' + this.ValueTypeName + ' keyframe track named ' + this.name;

				if (this.createInterpolant === undefined) {
					// fall back to default, unless the default itself is messed up
					if (interpolation !== this.DefaultInterpolation) {
						this.setInterpolation(this.DefaultInterpolation);
					} else {
						throw new Error(message); // fatal, in this case
					}
				}

				console.warn('THREE.KeyframeTrack:', message);
				return this;
			}

			this.createInterpolant = factoryMethod;
			return this;
		}

		getInterpolation() {
			switch (this.createInterpolant) {
				case this.InterpolantFactoryMethodDiscrete:
					return InterpolateDiscrete;

				case this.InterpolantFactoryMethodLinear:
					return InterpolateLinear;

				case this.InterpolantFactoryMethodSmooth:
					return InterpolateSmooth;
			}
		}

		getValueSize() {
			return this.values.length / this.times.length;
		} // move all keyframes either forwards or backwards in time


		shift(timeOffset) {
			if (timeOffset !== 0.0) {
				const times = this.times;

				for (let i = 0, n = times.length; i !== n; ++i) {
					times[i] += timeOffset;
				}
			}

			return this;
		} // scale all keyframe times by a factor (useful for frame <-> seconds conversions)


		scale(timeScale) {
			if (timeScale !== 1.0) {
				const times = this.times;

				for (let i = 0, n = times.length; i !== n; ++i) {
					times[i] *= timeScale;
				}
			}

			return this;
		} // removes keyframes before and after animation without changing any values within the range [startTime, endTime].
		// IMPORTANT: We do not shift around keys to the start of the track time, because for interpolated keys this will change their values


		trim(startTime, endTime) {
			const times = this.times,
						nKeys = times.length;
			let from = 0,
					to = nKeys - 1;

			while (from !== nKeys && times[from] < startTime) {
				++from;
			}

			while (to !== -1 && times[to] > endTime) {
				--to;
			}

			++to; // inclusive -> exclusive bound

			if (from !== 0 || to !== nKeys) {
				// empty tracks are forbidden, so keep at least one keyframe
				if (from >= to) {
					to = Math.max(to, 1);
					from = to - 1;
				}

				const stride = this.getValueSize();
				this.times = AnimationUtils.arraySlice(times, from, to);
				this.values = AnimationUtils.arraySlice(this.values, from * stride, to * stride);
			}

			return this;
		} // ensure we do not get a GarbageInGarbageOut situation, make sure tracks are at least minimally viable


		validate() {
			let valid = true;
			const valueSize = this.getValueSize();

			if (valueSize - Math.floor(valueSize) !== 0) {
				console.error('THREE.KeyframeTrack: Invalid value size in track.', this);
				valid = false;
			}

			const times = this.times,
						values = this.values,
						nKeys = times.length;

			if (nKeys === 0) {
				console.error('THREE.KeyframeTrack: Track is empty.', this);
				valid = false;
			}

			let prevTime = null;

			for (let i = 0; i !== nKeys; i++) {
				const currTime = times[i];

				if (typeof currTime === 'number' && isNaN(currTime)) {
					console.error('THREE.KeyframeTrack: Time is not a valid number.', this, i, currTime);
					valid = false;
					break;
				}

				if (prevTime !== null && prevTime > currTime) {
					console.error('THREE.KeyframeTrack: Out of order keys.', this, i, currTime, prevTime);
					valid = false;
					break;
				}

				prevTime = currTime;
			}

			if (values !== undefined) {
				if (AnimationUtils.isTypedArray(values)) {
					for (let i = 0, n = values.length; i !== n; ++i) {
						const value = values[i];

						if (isNaN(value)) {
							console.error('THREE.KeyframeTrack: Value is not a valid number.', this, i, value);
							valid = false;
							break;
						}
					}
				}
			}

			return valid;
		} // removes equivalent sequential keys as common in morph target sequences
		// (0,0,0,0,1,1,1,0,0,0,0,0,0,0) --> (0,0,1,1,0,0)


		optimize() {
			// times or values may be shared with other tracks, so overwriting is unsafe
			const times = AnimationUtils.arraySlice(this.times),
						values = AnimationUtils.arraySlice(this.values),
						stride = this.getValueSize(),
						smoothInterpolation = this.getInterpolation() === InterpolateSmooth,
						lastIndex = times.length - 1;
			let writeIndex = 1;

			for (let i = 1; i < lastIndex; ++i) {
				let keep = false;
				const time = times[i];
				const timeNext = times[i + 1]; // remove adjacent keyframes scheduled at the same time

				if (time !== timeNext && (i !== 1 || time !== times[0])) {
					if (!smoothInterpolation) {
						// remove unnecessary keyframes same as their neighbors
						const offset = i * stride,
									offsetP = offset - stride,
									offsetN = offset + stride;

						for (let j = 0; j !== stride; ++j) {
							const value = values[offset + j];

							if (value !== values[offsetP + j] || value !== values[offsetN + j]) {
								keep = true;
								break;
							}
						}
					} else {
						keep = true;
					}
				} // in-place compaction


				if (keep) {
					if (i !== writeIndex) {
						times[writeIndex] = times[i];
						const readOffset = i * stride,
									writeOffset = writeIndex * stride;

						for (let j = 0; j !== stride; ++j) {
							values[writeOffset + j] = values[readOffset + j];
						}
					}

					++writeIndex;
				}
			} // flush last keyframe (compaction looks ahead)


			if (lastIndex > 0) {
				times[writeIndex] = times[lastIndex];

				for (let readOffset = lastIndex * stride, writeOffset = writeIndex * stride, j = 0; j !== stride; ++j) {
					values[writeOffset + j] = values[readOffset + j];
				}

				++writeIndex;
			}

			if (writeIndex !== times.length) {
				this.times = AnimationUtils.arraySlice(times, 0, writeIndex);
				this.values = AnimationUtils.arraySlice(values, 0, writeIndex * stride);
			} else {
				this.times = times;
				this.values = values;
			}

			return this;
		}

		clone() {
			const times = AnimationUtils.arraySlice(this.times, 0);
			const values = AnimationUtils.arraySlice(this.values, 0);
			const TypedKeyframeTrack = this.constructor;
			const track = new TypedKeyframeTrack(this.name, times, values); // Interpolant argument to constructor is not saved, so copy the factory method directly.

			track.createInterpolant = this.createInterpolant;
			return track;
		}

	}

	KeyframeTrack.prototype.TimeBufferType = Float32Array;
	KeyframeTrack.prototype.ValueBufferType = Float32Array;
	KeyframeTrack.prototype.DefaultInterpolation = InterpolateLinear;

	/**
	 * A Track of Boolean keyframe values.
	 */

	class BooleanKeyframeTrack extends KeyframeTrack {}

	BooleanKeyframeTrack.prototype.ValueTypeName = 'bool';
	BooleanKeyframeTrack.prototype.ValueBufferType = Array;
	BooleanKeyframeTrack.prototype.DefaultInterpolation = InterpolateDiscrete;
	BooleanKeyframeTrack.prototype.InterpolantFactoryMethodLinear = undefined;
	BooleanKeyframeTrack.prototype.InterpolantFactoryMethodSmooth = undefined; // Note: Actually this track could have a optimized / compressed

	/**
	 * A Track of keyframe values that represent color.
	 */

	class ColorKeyframeTrack extends KeyframeTrack {}

	ColorKeyframeTrack.prototype.ValueTypeName = 'color'; // ValueBufferType is inherited

	/**
	 * A Track of numeric keyframe values.
	 */

	class NumberKeyframeTrack extends KeyframeTrack {}

	NumberKeyframeTrack.prototype.ValueTypeName = 'number'; // ValueBufferType is inherited

	/**
	 * Spherical linear unit quaternion interpolant.
	 */

	class QuaternionLinearInterpolant extends Interpolant {
		constructor(parameterPositions, sampleValues, sampleSize, resultBuffer) {
			super(parameterPositions, sampleValues, sampleSize, resultBuffer);
		}

		interpolate_(i1, t0, t, t1) {
			const result = this.resultBuffer,
						values = this.sampleValues,
						stride = this.valueSize,
						alpha = (t - t0) / (t1 - t0);
			let offset = i1 * stride;

			for (let end = offset + stride; offset !== end; offset += 4) {
				Quaternion.slerpFlat(result, 0, values, offset - stride, values, offset, alpha);
			}

			return result;
		}

	}

	/**
	 * A Track of quaternion keyframe values.
	 */

	class QuaternionKeyframeTrack extends KeyframeTrack {
		InterpolantFactoryMethodLinear(result) {
			return new QuaternionLinearInterpolant(this.times, this.values, this.getValueSize(), result);
		}

	}

	QuaternionKeyframeTrack.prototype.ValueTypeName = 'quaternion'; // ValueBufferType is inherited

	QuaternionKeyframeTrack.prototype.DefaultInterpolation = InterpolateLinear;
	QuaternionKeyframeTrack.prototype.InterpolantFactoryMethodSmooth = undefined;

	/**
	 * A Track that interpolates Strings
	 */

	class StringKeyframeTrack extends KeyframeTrack {}

	StringKeyframeTrack.prototype.ValueTypeName = 'string';
	StringKeyframeTrack.prototype.ValueBufferType = Array;
	StringKeyframeTrack.prototype.DefaultInterpolation = InterpolateDiscrete;
	StringKeyframeTrack.prototype.InterpolantFactoryMethodLinear = undefined;
	StringKeyframeTrack.prototype.InterpolantFactoryMethodSmooth = undefined;

	/**
	 * A Track of vectored keyframe values.
	 */

	class VectorKeyframeTrack extends KeyframeTrack {}

	VectorKeyframeTrack.prototype.ValueTypeName = 'vector'; // ValueBufferType is inherited

	class AnimationClip {
		constructor(name, duration = -1, tracks, blendMode = NormalAnimationBlendMode) {
			this.name = name;
			this.tracks = tracks;
			this.duration = duration;
			this.blendMode = blendMode;
			this.uuid = generateUUID(); // this means it should figure out its duration by scanning the tracks

			if (this.duration < 0) {
				this.resetDuration();
			}
		}

		static parse(json) {
			const tracks = [],
						jsonTracks = json.tracks,
						frameTime = 1.0 / (json.fps || 1.0);

			for (let i = 0, n = jsonTracks.length; i !== n; ++i) {
				tracks.push(parseKeyframeTrack(jsonTracks[i]).scale(frameTime));
			}

			const clip = new this(json.name, json.duration, tracks, json.blendMode);
			clip.uuid = json.uuid;
			return clip;
		}

		static toJSON(clip) {
			const tracks = [],
						clipTracks = clip.tracks;
			const json = {
				'name': clip.name,
				'duration': clip.duration,
				'tracks': tracks,
				'uuid': clip.uuid,
				'blendMode': clip.blendMode
			};

			for (let i = 0, n = clipTracks.length; i !== n; ++i) {
				tracks.push(KeyframeTrack.toJSON(clipTracks[i]));
			}

			return json;
		}

		static CreateFromMorphTargetSequence(name, morphTargetSequence, fps, noLoop) {
			const numMorphTargets = morphTargetSequence.length;
			const tracks = [];

			for (let i = 0; i < numMorphTargets; i++) {
				let times = [];
				let values = [];
				times.push((i + numMorphTargets - 1) % numMorphTargets, i, (i + 1) % numMorphTargets);
				values.push(0, 1, 0);
				const order = AnimationUtils.getKeyframeOrder(times);
				times = AnimationUtils.sortedArray(times, 1, order);
				values = AnimationUtils.sortedArray(values, 1, order); // if there is a key at the first frame, duplicate it as the
				// last frame as well for perfect loop.

				if (!noLoop && times[0] === 0) {
					times.push(numMorphTargets);
					values.push(values[0]);
				}

				tracks.push(new NumberKeyframeTrack('.morphTargetInfluences[' + morphTargetSequence[i].name + ']', times, values).scale(1.0 / fps));
			}

			return new this(name, -1, tracks);
		}

		static findByName(objectOrClipArray, name) {
			let clipArray = objectOrClipArray;

			if (!Array.isArray(objectOrClipArray)) {
				const o = objectOrClipArray;
				clipArray = o.geometry && o.geometry.animations || o.animations;
			}

			for (let i = 0; i < clipArray.length; i++) {
				if (clipArray[i].name === name) {
					return clipArray[i];
				}
			}

			return null;
		}

		static CreateClipsFromMorphTargetSequences(morphTargets, fps, noLoop) {
			const animationToMorphTargets = {}; // tested with https://regex101.com/ on trick sequences
			// such flamingo_flyA_003, flamingo_run1_003, crdeath0059

			const pattern = /^([\w-]*?)([\d]+)$/; // sort morph target names into animation groups based
			// patterns like Walk_001, Walk_002, Run_001, Run_002

			for (let i = 0, il = morphTargets.length; i < il; i++) {
				const morphTarget = morphTargets[i];
				const parts = morphTarget.name.match(pattern);

				if (parts && parts.length > 1) {
					const name = parts[1];
					let animationMorphTargets = animationToMorphTargets[name];

					if (!animationMorphTargets) {
						animationToMorphTargets[name] = animationMorphTargets = [];
					}

					animationMorphTargets.push(morphTarget);
				}
			}

			const clips = [];

			for (const name in animationToMorphTargets) {
				clips.push(this.CreateFromMorphTargetSequence(name, animationToMorphTargets[name], fps, noLoop));
			}

			return clips;
		} // parse the animation.hierarchy format


		static parseAnimation(animation, bones) {
			if (!animation) {
				console.error('THREE.AnimationClip: No animation in JSONLoader data.');
				return null;
			}

			const addNonemptyTrack = function (trackType, trackName, animationKeys, propertyName, destTracks) {
				// only return track if there are actually keys.
				if (animationKeys.length !== 0) {
					const times = [];
					const values = [];
					AnimationUtils.flattenJSON(animationKeys, times, values, propertyName); // empty keys are filtered out, so check again

					if (times.length !== 0) {
						destTracks.push(new trackType(trackName, times, values));
					}
				}
			};

			const tracks = [];
			const clipName = animation.name || 'default';
			const fps = animation.fps || 30;
			const blendMode = animation.blendMode; // automatic length determination in AnimationClip.

			let duration = animation.length || -1;
			const hierarchyTracks = animation.hierarchy || [];

			for (let h = 0; h < hierarchyTracks.length; h++) {
				const animationKeys = hierarchyTracks[h].keys; // skip empty tracks

				if (!animationKeys || animationKeys.length === 0) continue; // process morph targets

				if (animationKeys[0].morphTargets) {
					// figure out all morph targets used in this track
					const morphTargetNames = {};
					let k;

					for (k = 0; k < animationKeys.length; k++) {
						if (animationKeys[k].morphTargets) {
							for (let m = 0; m < animationKeys[k].morphTargets.length; m++) {
								morphTargetNames[animationKeys[k].morphTargets[m]] = -1;
							}
						}
					} // create a track for each morph target with all zero
					// morphTargetInfluences except for the keys in which
					// the morphTarget is named.


					for (const morphTargetName in morphTargetNames) {
						const times = [];
						const values = [];

						for (let m = 0; m !== animationKeys[k].morphTargets.length; ++m) {
							const animationKey = animationKeys[k];
							times.push(animationKey.time);
							values.push(animationKey.morphTarget === morphTargetName ? 1 : 0);
						}

						tracks.push(new NumberKeyframeTrack('.morphTargetInfluence[' + morphTargetName + ']', times, values));
					}

					duration = morphTargetNames.length * (fps || 1.0);
				} else {
					// ...assume skeletal animation
					const boneName = '.bones[' + bones[h].name + ']';
					addNonemptyTrack(VectorKeyframeTrack, boneName + '.position', animationKeys, 'pos', tracks);
					addNonemptyTrack(QuaternionKeyframeTrack, boneName + '.quaternion', animationKeys, 'rot', tracks);
					addNonemptyTrack(VectorKeyframeTrack, boneName + '.scale', animationKeys, 'scl', tracks);
				}
			}

			if (tracks.length === 0) {
				return null;
			}

			const clip = new this(clipName, duration, tracks, blendMode);
			return clip;
		}

		resetDuration() {
			const tracks = this.tracks;
			let duration = 0;

			for (let i = 0, n = tracks.length; i !== n; ++i) {
				const track = this.tracks[i];
				duration = Math.max(duration, track.times[track.times.length - 1]);
			}

			this.duration = duration;
			return this;
		}

		trim() {
			for (let i = 0; i < this.tracks.length; i++) {
				this.tracks[i].trim(0, this.duration);
			}

			return this;
		}

		validate() {
			let valid = true;

			for (let i = 0; i < this.tracks.length; i++) {
				valid = valid && this.tracks[i].validate();
			}

			return valid;
		}

		optimize() {
			for (let i = 0; i < this.tracks.length; i++) {
				this.tracks[i].optimize();
			}

			return this;
		}

		clone() {
			const tracks = [];

			for (let i = 0; i < this.tracks.length; i++) {
				tracks.push(this.tracks[i].clone());
			}

			return new this.constructor(this.name, this.duration, tracks, this.blendMode);
		}

		toJSON() {
			return this.constructor.toJSON(this);
		}

	}

	function getTrackTypeForValueTypeName(typeName) {
		switch (typeName.toLowerCase()) {
			case 'scalar':
			case 'double':
			case 'float':
			case 'number':
			case 'integer':
				return NumberKeyframeTrack;

			case 'vector':
			case 'vector2':
			case 'vector3':
			case 'vector4':
				return VectorKeyframeTrack;

			case 'color':
				return ColorKeyframeTrack;

			case 'quaternion':
				return QuaternionKeyframeTrack;

			case 'bool':
			case 'boolean':
				return BooleanKeyframeTrack;

			case 'string':
				return StringKeyframeTrack;
		}

		throw new Error('THREE.KeyframeTrack: Unsupported typeName: ' + typeName);
	}

	function parseKeyframeTrack(json) {
		if (json.type === undefined) {
			throw new Error('THREE.KeyframeTrack: track type undefined, can not parse');
		}

		const trackType = getTrackTypeForValueTypeName(json.type);

		if (json.times === undefined) {
			const times = [],
						values = [];
			AnimationUtils.flattenJSON(json.keys, times, values, 'value');
			json.times = times;
			json.values = values;
		} // derived classes can define a static parse method


		if (trackType.parse !== undefined) {
			return trackType.parse(json);
		} else {
			// by default, we assume a constructor compatible with the base
			return new trackType(json.name, json.times, json.values, json.interpolation);
		}
	}

	const Cache = {
		enabled: false,
		files: {},
		add: function (key, file) {
			if (this.enabled === false) return; // console.log( 'THREE.Cache', 'Adding key:', key );

			this.files[key] = file;
		},
		get: function (key) {
			if (this.enabled === false) return; // console.log( 'THREE.Cache', 'Checking key:', key );

			return this.files[key];
		},
		remove: function (key) {
			delete this.files[key];
		},
		clear: function () {
			this.files = {};
		}
	};

	class LoadingManager {
		constructor(onLoad, onProgress, onError) {
			const scope = this;
			let isLoading = false;
			let itemsLoaded = 0;
			let itemsTotal = 0;
			let urlModifier = undefined;
			const handlers = []; // Refer to #5689 for the reason why we don't set .onStart
			// in the constructor

			this.onStart = undefined;
			this.onLoad = onLoad;
			this.onProgress = onProgress;
			this.onError = onError;

			this.itemStart = function (url) {
				itemsTotal++;

				if (isLoading === false) {
					if (scope.onStart !== undefined) {
						scope.onStart(url, itemsLoaded, itemsTotal);
					}
				}

				isLoading = true;
			};

			this.itemEnd = function (url) {
				itemsLoaded++;

				if (scope.onProgress !== undefined) {
					scope.onProgress(url, itemsLoaded, itemsTotal);
				}

				if (itemsLoaded === itemsTotal) {
					isLoading = false;

					if (scope.onLoad !== undefined) {
						scope.onLoad();
					}
				}
			};

			this.itemError = function (url) {
				if (scope.onError !== undefined) {
					scope.onError(url);
				}
			};

			this.resolveURL = function (url) {
				if (urlModifier) {
					return urlModifier(url);
				}

				return url;
			};

			this.setURLModifier = function (transform) {
				urlModifier = transform;
				return this;
			};

			this.addHandler = function (regex, loader) {
				handlers.push(regex, loader);
				return this;
			};

			this.removeHandler = function (regex) {
				const index = handlers.indexOf(regex);

				if (index !== -1) {
					handlers.splice(index, 2);
				}

				return this;
			};

			this.getHandler = function (file) {
				for (let i = 0, l = handlers.length; i < l; i += 2) {
					const regex = handlers[i];
					const loader = handlers[i + 1];
					if (regex.global) regex.lastIndex = 0; // see #17920

					if (regex.test(file)) {
						return loader;
					}
				}

				return null;
			};
		}

	}

	const DefaultLoadingManager = new LoadingManager();

	class Loader {
		constructor(manager) {
			this.manager = manager !== undefined ? manager : DefaultLoadingManager;
			this.crossOrigin = 'anonymous';
			this.withCredentials = false;
			this.path = '';
			this.resourcePath = '';
			this.requestHeader = {};
		}

		load() {}

		loadAsync(url, onProgress) {
			const scope = this;
			return new Promise(function (resolve, reject) {
				scope.load(url, resolve, onProgress, reject);
			});
		}

		parse() {}

		setCrossOrigin(crossOrigin) {
			this.crossOrigin = crossOrigin;
			return this;
		}

		setWithCredentials(value) {
			this.withCredentials = value;
			return this;
		}

		setPath(path) {
			this.path = path;
			return this;
		}

		setResourcePath(resourcePath) {
			this.resourcePath = resourcePath;
			return this;
		}

		setRequestHeader(requestHeader) {
			this.requestHeader = requestHeader;
			return this;
		}

	}

	const loading = {};

	class FileLoader extends Loader {
		constructor(manager) {
			super(manager);
		}

		load(url, onLoad, onProgress, onError) {
			if (url === undefined) url = '';
			if (this.path !== undefined) url = this.path + url;
			url = this.manager.resolveURL(url);
			const scope = this;
			const cached = Cache.get(url);

			if (cached !== undefined) {
				scope.manager.itemStart(url);
				setTimeout(function () {
					if (onLoad) onLoad(cached);
					scope.manager.itemEnd(url);
				}, 0);
				return cached;
			} // Check if request is duplicate


			if (loading[url] !== undefined) {
				loading[url].push({
					onLoad: onLoad,
					onProgress: onProgress,
					onError: onError
				});
				return;
			} // Check for data: URI


			const dataUriRegex = /^data:(.*?)(;base64)?,(.*)$/;
			const dataUriRegexResult = url.match(dataUriRegex);
			let request; // Safari can not handle Data URIs through XMLHttpRequest so process manually

			if (dataUriRegexResult) {
				const mimeType = dataUriRegexResult[1];
				const isBase64 = !!dataUriRegexResult[2];
				let data = dataUriRegexResult[3];
				data = decodeURIComponent(data);
				if (isBase64) data = atob(data);

				try {
					let response;
					const responseType = (this.responseType || '').toLowerCase();

					switch (responseType) {
						case 'arraybuffer':
						case 'blob':
							const view = new Uint8Array(data.length);

							for (let i = 0; i < data.length; i++) {
								view[i] = data.charCodeAt(i);
							}

							if (responseType === 'blob') {
								response = new Blob([view.buffer], {
									type: mimeType
								});
							} else {
								response = view.buffer;
							}

							break;

						case 'document':
							const parser = new DOMParser();
							response = parser.parseFromString(data, mimeType);
							break;

						case 'json':
							response = JSON.parse(data);
							break;

						default:
							// 'text' or other
							response = data;
							break;
					} // Wait for next browser tick like standard XMLHttpRequest event dispatching does


					setTimeout(function () {
						if (onLoad) onLoad(response);
						scope.manager.itemEnd(url);
					}, 0);
				} catch (error) {
					// Wait for next browser tick like standard XMLHttpRequest event dispatching does
					setTimeout(function () {
						if (onError) onError(error);
						scope.manager.itemError(url);
						scope.manager.itemEnd(url);
					}, 0);
				}
			} else {
				// Initialise array for duplicate requests
				loading[url] = [];
				loading[url].push({
					onLoad: onLoad,
					onProgress: onProgress,
					onError: onError
				});
				request = new XMLHttpRequest();
				request.open('GET', url, true);
				request.addEventListener('load', function (event) {
					const response = this.response;
					const callbacks = loading[url];
					delete loading[url];

					if (this.status === 200 || this.status === 0) {
						// Some browsers return HTTP Status 0 when using non-http protocol
						// e.g. 'file://' or 'data://'. Handle as success.
						if (this.status === 0) console.warn('THREE.FileLoader: HTTP Status 0 received.'); // Add to cache only on HTTP success, so that we do not cache
						// error response bodies as proper responses to requests.

						Cache.add(url, response);

						for (let i = 0, il = callbacks.length; i < il; i++) {
							const callback = callbacks[i];
							if (callback.onLoad) callback.onLoad(response);
						}

						scope.manager.itemEnd(url);
					} else {
						for (let i = 0, il = callbacks.length; i < il; i++) {
							const callback = callbacks[i];
							if (callback.onError) callback.onError(event);
						}

						scope.manager.itemError(url);
						scope.manager.itemEnd(url);
					}
				}, false);
				request.addEventListener('progress', function (event) {
					const callbacks = loading[url];

					for (let i = 0, il = callbacks.length; i < il; i++) {
						const callback = callbacks[i];
						if (callback.onProgress) callback.onProgress(event);
					}
				}, false);
				request.addEventListener('error', function (event) {
					const callbacks = loading[url];
					delete loading[url];

					for (let i = 0, il = callbacks.length; i < il; i++) {
						const callback = callbacks[i];
						if (callback.onError) callback.onError(event);
					}

					scope.manager.itemError(url);
					scope.manager.itemEnd(url);
				}, false);
				request.addEventListener('abort', function (event) {
					const callbacks = loading[url];
					delete loading[url];

					for (let i = 0, il = callbacks.length; i < il; i++) {
						const callback = callbacks[i];
						if (callback.onError) callback.onError(event);
					}

					scope.manager.itemError(url);
					scope.manager.itemEnd(url);
				}, false);
				if (this.responseType !== undefined) request.responseType = this.responseType;
				if (this.withCredentials !== undefined) request.withCredentials = this.withCredentials;
				if (request.overrideMimeType) request.overrideMimeType(this.mimeType !== undefined ? this.mimeType : 'text/plain');

				for (const header in this.requestHeader) {
					request.setRequestHeader(header, this.requestHeader[header]);
				}

				request.send(null);
			}

			scope.manager.itemStart(url);
			return request;
		}

		setResponseType(value) {
			this.responseType = value;
			return this;
		}

		setMimeType(value) {
			this.mimeType = value;
			return this;
		}

	}

	class AnimationLoader extends Loader {
		constructor(manager) {
			super(manager);
		}

		load(url, onLoad, onProgress, onError) {
			const scope = this;
			const loader = new FileLoader(this.manager);
			loader.setPath(this.path);
			loader.setRequestHeader(this.requestHeader);
			loader.setWithCredentials(this.withCredentials);
			loader.load(url, function (text) {
				try {
					onLoad(scope.parse(JSON.parse(text)));
				} catch (e) {
					if (onError) {
						onError(e);
					} else {
						console.error(e);
					}

					scope.manager.itemError(url);
				}
			}, onProgress, onError);
		}

		parse(json) {
			const animations = [];

			for (let i = 0; i < json.length; i++) {
				const clip = AnimationClip.parse(json[i]);
				animations.push(clip);
			}

			return animations;
		}

	}

	/**
	 * Abstract Base class to block based textures loader (dds, pvr, ...)
	 *
	 * Sub classes have to implement the parse() method which will be used in load().
	 */

	class CompressedTextureLoader extends Loader {
		constructor(manager) {
			super(manager);
		}

		load(url, onLoad, onProgress, onError) {
			const scope = this;
			const images = [];
			const texture = new CompressedTexture();
			const loader = new FileLoader(this.manager);
			loader.setPath(this.path);
			loader.setResponseType('arraybuffer');
			loader.setRequestHeader(this.requestHeader);
			loader.setWithCredentials(scope.withCredentials);
			let loaded = 0;

			function loadTexture(i) {
				loader.load(url[i], function (buffer) {
					const texDatas = scope.parse(buffer, true);
					images[i] = {
						width: texDatas.width,
						height: texDatas.height,
						format: texDatas.format,
						mipmaps: texDatas.mipmaps
					};
					loaded += 1;

					if (loaded === 6) {
						if (texDatas.mipmapCount === 1) texture.minFilter = LinearFilter;
						texture.image = images;
						texture.format = texDatas.format;
						texture.needsUpdate = true;
						if (onLoad) onLoad(texture);
					}
				}, onProgress, onError);
			}

			if (Array.isArray(url)) {
				for (let i = 0, il = url.length; i < il; ++i) {
					loadTexture(i);
				}
			} else {
				// compressed cubemap texture stored in a single DDS file
				loader.load(url, function (buffer) {
					const texDatas = scope.parse(buffer, true);

					if (texDatas.isCubemap) {
						const faces = texDatas.mipmaps.length / texDatas.mipmapCount;

						for (let f = 0; f < faces; f++) {
							images[f] = {
								mipmaps: []
							};

							for (let i = 0; i < texDatas.mipmapCount; i++) {
								images[f].mipmaps.push(texDatas.mipmaps[f * texDatas.mipmapCount + i]);
								images[f].format = texDatas.format;
								images[f].width = texDatas.width;
								images[f].height = texDatas.height;
							}
						}

						texture.image = images;
					} else {
						texture.image.width = texDatas.width;
						texture.image.height = texDatas.height;
						texture.mipmaps = texDatas.mipmaps;
					}

					if (texDatas.mipmapCount === 1) {
						texture.minFilter = LinearFilter;
					}

					texture.format = texDatas.format;
					texture.needsUpdate = true;
					if (onLoad) onLoad(texture);
				}, onProgress, onError);
			}

			return texture;
		}

	}

	class ImageLoader extends Loader {
		constructor(manager) {
			super(manager);
		}

		load(url, onLoad, onProgress, onError) {
			if (this.path !== undefined) url = this.path + url;
			url = this.manager.resolveURL(url);
			const scope = this;
			const cached = Cache.get(url);

			if (cached !== undefined) {
				scope.manager.itemStart(url);
				setTimeout(function () {
					if (onLoad) onLoad(cached);
					scope.manager.itemEnd(url);
				}, 0);
				return cached;
			}

			const image = createElementNS('img');

			function onImageLoad() {
				image.removeEventListener('load', onImageLoad, false);
				image.removeEventListener('error', onImageError, false);
				Cache.add(url, this);
				if (onLoad) onLoad(this);
				scope.manager.itemEnd(url);
			}

			function onImageError(event) {
				image.removeEventListener('load', onImageLoad, false);
				image.removeEventListener('error', onImageError, false);
				if (onError) onError(event);
				scope.manager.itemError(url);
				scope.manager.itemEnd(url);
			}

			image.addEventListener('load', onImageLoad, false);
			image.addEventListener('error', onImageError, false);

			if (url.substr(0, 5) !== 'data:') {
				if (this.crossOrigin !== undefined) image.crossOrigin = this.crossOrigin;
			}

			scope.manager.itemStart(url);
			image.src = url;
			return image;
		}

	}

	class CubeTextureLoader extends Loader {
		constructor(manager) {
			super(manager);
		}

		load(urls, onLoad, onProgress, onError) {
			const texture = new CubeTexture();
			const loader = new ImageLoader(this.manager);
			loader.setCrossOrigin(this.crossOrigin);
			loader.setPath(this.path);
			let loaded = 0;

			function loadTexture(i) {
				loader.load(urls[i], function (image) {
					texture.images[i] = image;
					loaded++;

					if (loaded === 6) {
						texture.needsUpdate = true;
						if (onLoad) onLoad(texture);
					}
				}, undefined, onError);
			}

			for (let i = 0; i < urls.length; ++i) {
				loadTexture(i);
			}

			return texture;
		}

	}

	/**
	 * Abstract Base class to load generic binary textures formats (rgbe, hdr, ...)
	 *
	 * Sub classes have to implement the parse() method which will be used in load().
	 */

	class DataTextureLoader extends Loader {
		constructor(manager) {
			super(manager);
		}

		load(url, onLoad, onProgress, onError) {
			const scope = this;
			const texture = new DataTexture();
			const loader = new FileLoader(this.manager);
			loader.setResponseType('arraybuffer');
			loader.setRequestHeader(this.requestHeader);
			loader.setPath(this.path);
			loader.setWithCredentials(scope.withCredentials);
			loader.load(url, function (buffer) {
				const texData = scope.parse(buffer);
				if (!texData) return;

				if (texData.image !== undefined) {
					texture.image = texData.image;
				} else if (texData.data !== undefined) {
					texture.image.width = texData.width;
					texture.image.height = texData.height;
					texture.image.data = texData.data;
				}

				texture.wrapS = texData.wrapS !== undefined ? texData.wrapS : ClampToEdgeWrapping;
				texture.wrapT = texData.wrapT !== undefined ? texData.wrapT : ClampToEdgeWrapping;
				texture.magFilter = texData.magFilter !== undefined ? texData.magFilter : LinearFilter;
				texture.minFilter = texData.minFilter !== undefined ? texData.minFilter : LinearFilter;
				texture.anisotropy = texData.anisotropy !== undefined ? texData.anisotropy : 1;

				if (texData.encoding !== undefined) {
					texture.encoding = texData.encoding;
				}

				if (texData.flipY !== undefined) {
					texture.flipY = texData.flipY;
				}

				if (texData.format !== undefined) {
					texture.format = texData.format;
				}

				if (texData.type !== undefined) {
					texture.type = texData.type;
				}

				if (texData.mipmaps !== undefined) {
					texture.mipmaps = texData.mipmaps;
					texture.minFilter = LinearMipmapLinearFilter; // presumably...
				}

				if (texData.mipmapCount === 1) {
					texture.minFilter = LinearFilter;
				}

				if (texData.generateMipmaps !== undefined) {
					texture.generateMipmaps = texData.generateMipmaps;
				}

				texture.needsUpdate = true;
				if (onLoad) onLoad(texture, texData);
			}, onProgress, onError);
			return texture;
		}

	}

	class TextureLoader extends Loader {
		constructor(manager) {
			super(manager);
		}

		load(url, onLoad, onProgress, onError) {
			const texture = new Texture();
			const loader = new ImageLoader(this.manager);
			loader.setCrossOrigin(this.crossOrigin);
			loader.setPath(this.path);
			loader.load(url, function (image) {
				texture.image = image;
				texture.needsUpdate = true;

				if (onLoad !== undefined) {
					onLoad(texture);
				}
			}, onProgress, onError);
			return texture;
		}

	}

	class Light extends Object3D {
		constructor(color, intensity = 1) {
			super();
			this.type = 'Light';
			this.color = new Color(color);
			this.intensity = intensity;
		}

		dispose() {// Empty here in base class; some subclasses override.
		}

		copy(source) {
			super.copy(source);
			this.color.copy(source.color);
			this.intensity = source.intensity;
			return this;
		}

		toJSON(meta) {
			const data = super.toJSON(meta);
			data.object.color = this.color.getHex();
			data.object.intensity = this.intensity;
			if (this.groundColor !== undefined) data.object.groundColor = this.groundColor.getHex();
			if (this.distance !== undefined) data.object.distance = this.distance;
			if (this.angle !== undefined) data.object.angle = this.angle;
			if (this.decay !== undefined) data.object.decay = this.decay;
			if (this.penumbra !== undefined) data.object.penumbra = this.penumbra;
			if (this.shadow !== undefined) data.object.shadow = this.shadow.toJSON();
			return data;
		}

	}

	Light.prototype.isLight = true;

	class HemisphereLight extends Light {
		constructor(skyColor, groundColor, intensity) {
			super(skyColor, intensity);
			this.type = 'HemisphereLight';
			this.position.copy(Object3D.DefaultUp);
			this.updateMatrix();
			this.groundColor = new Color(groundColor);
		}

		copy(source) {
			Light.prototype.copy.call(this, source);
			this.groundColor.copy(source.groundColor);
			return this;
		}

	}

	HemisphereLight.prototype.isHemisphereLight = true;

	const _projScreenMatrix$1 = /*@__PURE__*/new Matrix4();

	const _lightPositionWorld$1 = /*@__PURE__*/new Vector3();

	const _lookTarget$1 = /*@__PURE__*/new Vector3();

	class LightShadow {
		constructor(camera) {
			this.camera = camera;
			this.bias = 0;
			this.normalBias = 0;
			this.radius = 1;
			this.blurSamples = 8;
			this.mapSize = new Vector2(512, 512);
			this.map = null;
			this.mapPass = null;
			this.matrix = new Matrix4();
			this.autoUpdate = true;
			this.needsUpdate = false;
			this._frustum = new Frustum();
			this._frameExtents = new Vector2(1, 1);
			this._viewportCount = 1;
			this._viewports = [new Vector4(0, 0, 1, 1)];
		}

		getViewportCount() {
			return this._viewportCount;
		}

		getFrustum() {
			return this._frustum;
		}

		updateMatrices(light) {
			const shadowCamera = this.camera;
			const shadowMatrix = this.matrix;

			_lightPositionWorld$1.setFromMatrixPosition(light.matrixWorld);

			shadowCamera.position.copy(_lightPositionWorld$1);

			_lookTarget$1.setFromMatrixPosition(light.target.matrixWorld);

			shadowCamera.lookAt(_lookTarget$1);
			shadowCamera.updateMatrixWorld();

			_projScreenMatrix$1.multiplyMatrices(shadowCamera.projectionMatrix, shadowCamera.matrixWorldInverse);

			this._frustum.setFromProjectionMatrix(_projScreenMatrix$1);

			shadowMatrix.set(0.5, 0.0, 0.0, 0.5, 0.0, 0.5, 0.0, 0.5, 0.0, 0.0, 0.5, 0.5, 0.0, 0.0, 0.0, 1.0);
			shadowMatrix.multiply(shadowCamera.projectionMatrix);
			shadowMatrix.multiply(shadowCamera.matrixWorldInverse);
		}

		getViewport(viewportIndex) {
			return this._viewports[viewportIndex];
		}

		getFrameExtents() {
			return this._frameExtents;
		}

		dispose() {
			if (this.map) {
				this.map.dispose();
			}

			if (this.mapPass) {
				this.mapPass.dispose();
			}
		}

		copy(source) {
			this.camera = source.camera.clone();
			this.bias = source.bias;
			this.radius = source.radius;
			this.mapSize.copy(source.mapSize);
			return this;
		}

		clone() {
			return new this.constructor().copy(this);
		}

		toJSON() {
			const object = {};
			if (this.bias !== 0) object.bias = this.bias;
			if (this.normalBias !== 0) object.normalBias = this.normalBias;
			if (this.radius !== 1) object.radius = this.radius;
			if (this.mapSize.x !== 512 || this.mapSize.y !== 512) object.mapSize = this.mapSize.toArray();
			object.camera = this.camera.toJSON(false).object;
			delete object.camera.matrix;
			return object;
		}

	}

	class SpotLightShadow extends LightShadow {
		constructor() {
			super(new PerspectiveCamera(50, 1, 0.5, 500));
			this.focus = 1;
		}

		updateMatrices(light) {
			const camera = this.camera;
			const fov = RAD2DEG * 2 * light.angle * this.focus;
			const aspect = this.mapSize.width / this.mapSize.height;
			const far = light.distance || camera.far;

			if (fov !== camera.fov || aspect !== camera.aspect || far !== camera.far) {
				camera.fov = fov;
				camera.aspect = aspect;
				camera.far = far;
				camera.updateProjectionMatrix();
			}

			super.updateMatrices(light);
		}

		copy(source) {
			super.copy(source);
			this.focus = source.focus;
			return this;
		}

	}

	SpotLightShadow.prototype.isSpotLightShadow = true;

	class SpotLight extends Light {
		constructor(color, intensity, distance = 0, angle = Math.PI / 3, penumbra = 0, decay = 1) {
			super(color, intensity);
			this.type = 'SpotLight';
			this.position.copy(Object3D.DefaultUp);
			this.updateMatrix();
			this.target = new Object3D();
			this.distance = distance;
			this.angle = angle;
			this.penumbra = penumbra;
			this.decay = decay; // for physically correct lights, should be 2.

			this.shadow = new SpotLightShadow();
		}

		get power() {
			// compute the light's luminous power (in lumens) from its intensity (in candela)
			// by convention for a spotlight, luminous power (lm) = π * luminous intensity (cd)
			return this.intensity * Math.PI;
		}

		set power(power) {
			// set the light's intensity (in candela) from the desired luminous power (in lumens)
			this.intensity = power / Math.PI;
		}

		dispose() {
			this.shadow.dispose();
		}

		copy(source) {
			super.copy(source);
			this.distance = source.distance;
			this.angle = source.angle;
			this.penumbra = source.penumbra;
			this.decay = source.decay;
			this.target = source.target.clone();
			this.shadow = source.shadow.clone();
			return this;
		}

	}

	SpotLight.prototype.isSpotLight = true;

	const _projScreenMatrix = /*@__PURE__*/new Matrix4();

	const _lightPositionWorld = /*@__PURE__*/new Vector3();

	const _lookTarget = /*@__PURE__*/new Vector3();

	class PointLightShadow extends LightShadow {
		constructor() {
			super(new PerspectiveCamera(90, 1, 0.5, 500));
			this._frameExtents = new Vector2(4, 2);
			this._viewportCount = 6;
			this._viewports = [// These viewports map a cube-map onto a 2D texture with the
			// following orientation:
			//
			//	xzXZ
			//	 y Y
			//
			// X - Positive x direction
			// x - Negative x direction
			// Y - Positive y direction
			// y - Negative y direction
			// Z - Positive z direction
			// z - Negative z direction
			// positive X
			new Vector4(2, 1, 1, 1), // negative X
			new Vector4(0, 1, 1, 1), // positive Z
			new Vector4(3, 1, 1, 1), // negative Z
			new Vector4(1, 1, 1, 1), // positive Y
			new Vector4(3, 0, 1, 1), // negative Y
			new Vector4(1, 0, 1, 1)];
			this._cubeDirections = [new Vector3(1, 0, 0), new Vector3(-1, 0, 0), new Vector3(0, 0, 1), new Vector3(0, 0, -1), new Vector3(0, 1, 0), new Vector3(0, -1, 0)];
			this._cubeUps = [new Vector3(0, 1, 0), new Vector3(0, 1, 0), new Vector3(0, 1, 0), new Vector3(0, 1, 0), new Vector3(0, 0, 1), new Vector3(0, 0, -1)];
		}

		updateMatrices(light, viewportIndex = 0) {
			const camera = this.camera;
			const shadowMatrix = this.matrix;
			const far = light.distance || camera.far;

			if (far !== camera.far) {
				camera.far = far;
				camera.updateProjectionMatrix();
			}

			_lightPositionWorld.setFromMatrixPosition(light.matrixWorld);

			camera.position.copy(_lightPositionWorld);

			_lookTarget.copy(camera.position);

			_lookTarget.add(this._cubeDirections[viewportIndex]);

			camera.up.copy(this._cubeUps[viewportIndex]);
			camera.lookAt(_lookTarget);
			camera.updateMatrixWorld();
			shadowMatrix.makeTranslation(-_lightPositionWorld.x, -_lightPositionWorld.y, -_lightPositionWorld.z);

			_projScreenMatrix.multiplyMatrices(camera.projectionMatrix, camera.matrixWorldInverse);

			this._frustum.setFromProjectionMatrix(_projScreenMatrix);
		}

	}

	PointLightShadow.prototype.isPointLightShadow = true;

	class PointLight extends Light {
		constructor(color, intensity, distance = 0, decay = 1) {
			super(color, intensity);
			this.type = 'PointLight';
			this.distance = distance;
			this.decay = decay; // for physically correct lights, should be 2.

			this.shadow = new PointLightShadow();
		}

		get power() {
			// compute the light's luminous power (in lumens) from its intensity (in candela)
			// for an isotropic light source, luminous power (lm) = 4 π luminous intensity (cd)
			return this.intensity * 4 * Math.PI;
		}

		set power(power) {
			// set the light's intensity (in candela) from the desired luminous power (in lumens)
			this.intensity = power / (4 * Math.PI);
		}

		dispose() {
			this.shadow.dispose();
		}

		copy(source) {
			super.copy(source);
			this.distance = source.distance;
			this.decay = source.decay;
			this.shadow = source.shadow.clone();
			return this;
		}

	}

	PointLight.prototype.isPointLight = true;

	class DirectionalLightShadow extends LightShadow {
		constructor() {
			super(new OrthographicCamera(-5, 5, 5, -5, 0.5, 500));
		}

	}

	DirectionalLightShadow.prototype.isDirectionalLightShadow = true;

	class DirectionalLight extends Light {
		constructor(color, intensity) {
			super(color, intensity);
			this.type = 'DirectionalLight';
			this.position.copy(Object3D.DefaultUp);
			this.updateMatrix();
			this.target = new Object3D();
			this.shadow = new DirectionalLightShadow();
		}

		dispose() {
			this.shadow.dispose();
		}

		copy(source) {
			super.copy(source);
			this.target = source.target.clone();
			this.shadow = source.shadow.clone();
			return this;
		}

	}

	DirectionalLight.prototype.isDirectionalLight = true;

	class AmbientLight extends Light {
		constructor(color, intensity) {
			super(color, intensity);
			this.type = 'AmbientLight';
		}

	}

	AmbientLight.prototype.isAmbientLight = true;

	class RectAreaLight extends Light {
		constructor(color, intensity, width = 10, height = 10) {
			super(color, intensity);
			this.type = 'RectAreaLight';
			this.width = width;
			this.height = height;
		}

		get power() {
			// compute the light's luminous power (in lumens) from its intensity (in nits)
			return this.intensity * this.width * this.height * Math.PI;
		}

		set power(power) {
			// set the light's intensity (in nits) from the desired luminous power (in lumens)
			this.intensity = power / (this.width * this.height * Math.PI);
		}

		copy(source) {
			super.copy(source);
			this.width = source.width;
			this.height = source.height;
			return this;
		}

		toJSON(meta) {
			const data = super.toJSON(meta);
			data.object.width = this.width;
			data.object.height = this.height;
			return data;
		}

	}

	RectAreaLight.prototype.isRectAreaLight = true;

	/**
	 * Primary reference:
	 *	 https://graphics.stanford.edu/papers/envmap/envmap.pdf
	 *
	 * Secondary reference:
	 *	 https://www.ppsloan.org/publications/StupidSH36.pdf
	 */
	// 3-band SH defined by 9 coefficients

	class SphericalHarmonics3 {
		constructor() {
			this.coefficients = [];

			for (let i = 0; i < 9; i++) {
				this.coefficients.push(new Vector3());
			}
		}

		set(coefficients) {
			for (let i = 0; i < 9; i++) {
				this.coefficients[i].copy(coefficients[i]);
			}

			return this;
		}

		zero() {
			for (let i = 0; i < 9; i++) {
				this.coefficients[i].set(0, 0, 0);
			}

			return this;
		} // get the radiance in the direction of the normal
		// target is a Vector3


		getAt(normal, target) {
			// normal is assumed to be unit length
			const x = normal.x,
						y = normal.y,
						z = normal.z;
			const coeff = this.coefficients; // band 0

			target.copy(coeff[0]).multiplyScalar(0.282095); // band 1

			target.addScaledVector(coeff[1], 0.488603 * y);
			target.addScaledVector(coeff[2], 0.488603 * z);
			target.addScaledVector(coeff[3], 0.488603 * x); // band 2

			target.addScaledVector(coeff[4], 1.092548 * (x * y));
			target.addScaledVector(coeff[5], 1.092548 * (y * z));
			target.addScaledVector(coeff[6], 0.315392 * (3.0 * z * z - 1.0));
			target.addScaledVector(coeff[7], 1.092548 * (x * z));
			target.addScaledVector(coeff[8], 0.546274 * (x * x - y * y));
			return target;
		} // get the irradiance (radiance convolved with cosine lobe) in the direction of the normal
		// target is a Vector3
		// https://graphics.stanford.edu/papers/envmap/envmap.pdf


		getIrradianceAt(normal, target) {
			// normal is assumed to be unit length
			const x = normal.x,
						y = normal.y,
						z = normal.z;
			const coeff = this.coefficients; // band 0

			target.copy(coeff[0]).multiplyScalar(0.886227); // π * 0.282095
			// band 1

			target.addScaledVector(coeff[1], 2.0 * 0.511664 * y); // ( 2 * π / 3 ) * 0.488603

			target.addScaledVector(coeff[2], 2.0 * 0.511664 * z);
			target.addScaledVector(coeff[3], 2.0 * 0.511664 * x); // band 2

			target.addScaledVector(coeff[4], 2.0 * 0.429043 * x * y); // ( π / 4 ) * 1.092548

			target.addScaledVector(coeff[5], 2.0 * 0.429043 * y * z);
			target.addScaledVector(coeff[6], 0.743125 * z * z - 0.247708); // ( π / 4 ) * 0.315392 * 3

			target.addScaledVector(coeff[7], 2.0 * 0.429043 * x * z);
			target.addScaledVector(coeff[8], 0.429043 * (x * x - y * y)); // ( π / 4 ) * 0.546274

			return target;
		}

		add(sh) {
			for (let i = 0; i < 9; i++) {
				this.coefficients[i].add(sh.coefficients[i]);
			}

			return this;
		}

		addScaledSH(sh, s) {
			for (let i = 0; i < 9; i++) {
				this.coefficients[i].addScaledVector(sh.coefficients[i], s);
			}

			return this;
		}

		scale(s) {
			for (let i = 0; i < 9; i++) {
				this.coefficients[i].multiplyScalar(s);
			}

			return this;
		}

		lerp(sh, alpha) {
			for (let i = 0; i < 9; i++) {
				this.coefficients[i].lerp(sh.coefficients[i], alpha);
			}

			return this;
		}

		equals(sh) {
			for (let i = 0; i < 9; i++) {
				if (!this.coefficients[i].equals(sh.coefficients[i])) {
					return false;
				}
			}

			return true;
		}

		copy(sh) {
			return this.set(sh.coefficients);
		}

		clone() {
			return new this.constructor().copy(this);
		}

		fromArray(array, offset = 0) {
			const coefficients = this.coefficients;

			for (let i = 0; i < 9; i++) {
				coefficients[i].fromArray(array, offset + i * 3);
			}

			return this;
		}

		toArray(array = [], offset = 0) {
			const coefficients = this.coefficients;

			for (let i = 0; i < 9; i++) {
				coefficients[i].toArray(array, offset + i * 3);
			}

			return array;
		} // evaluate the basis functions
		// shBasis is an Array[ 9 ]


		static getBasisAt(normal, shBasis) {
			// normal is assumed to be unit length
			const x = normal.x,
						y = normal.y,
						z = normal.z; // band 0

			shBasis[0] = 0.282095; // band 1

			shBasis[1] = 0.488603 * y;
			shBasis[2] = 0.488603 * z;
			shBasis[3] = 0.488603 * x; // band 2

			shBasis[4] = 1.092548 * x * y;
			shBasis[5] = 1.092548 * y * z;
			shBasis[6] = 0.315392 * (3 * z * z - 1);
			shBasis[7] = 1.092548 * x * z;
			shBasis[8] = 0.546274 * (x * x - y * y);
		}

	}

	SphericalHarmonics3.prototype.isSphericalHarmonics3 = true;

	class LightProbe extends Light {
		constructor(sh = new SphericalHarmonics3(), intensity = 1) {
			super(undefined, intensity);
			this.sh = sh;
		}

		copy(source) {
			super.copy(source);
			this.sh.copy(source.sh);
			return this;
		}

		fromJSON(json) {
			this.intensity = json.intensity; // TODO: Move this bit to Light.fromJSON();

			this.sh.fromArray(json.sh);
			return this;
		}

		toJSON(meta) {
			const data = super.toJSON(meta);
			data.object.sh = this.sh.toArray();
			return data;
		}

	}

	LightProbe.prototype.isLightProbe = true;

	class MaterialLoader extends Loader {
		constructor(manager) {
			super(manager);
			this.textures = {};
		}

		load(url, onLoad, onProgress, onError) {
			const scope = this;
			const loader = new FileLoader(scope.manager);
			loader.setPath(scope.path);
			loader.setRequestHeader(scope.requestHeader);
			loader.setWithCredentials(scope.withCredentials);
			loader.load(url, function (text) {
				try {
					onLoad(scope.parse(JSON.parse(text)));
				} catch (e) {
					if (onError) {
						onError(e);
					} else {
						console.error(e);
					}

					scope.manager.itemError(url);
				}
			}, onProgress, onError);
		}

		parse(json) {
			const textures = this.textures;

			function getTexture(name) {
				if (textures[name] === undefined) {
					console.warn('THREE.MaterialLoader: Undefined texture', name);
				}

				return textures[name];
			}

			const material = new Materials[json.type]();
			if (json.uuid !== undefined) material.uuid = json.uuid;
			if (json.name !== undefined) material.name = json.name;
			if (json.color !== undefined && material.color !== undefined) material.color.setHex(json.color);
			if (json.roughness !== undefined) material.roughness = json.roughness;
			if (json.metalness !== undefined) material.metalness = json.metalness;
			if (json.sheen !== undefined) material.sheen = json.sheen;
			if (json.sheenTint !== undefined) material.sheenTint = new Color().setHex(json.sheenTint);
			if (json.sheenRoughness !== undefined) material.sheenRoughness = json.sheenRoughness;
			if (json.emissive !== undefined && material.emissive !== undefined) material.emissive.setHex(json.emissive);
			if (json.specular !== undefined && material.specular !== undefined) material.specular.setHex(json.specular);
			if (json.specularIntensity !== undefined) material.specularIntensity = json.specularIntensity;
			if (json.specularTint !== undefined && material.specularTint !== undefined) material.specularTint.setHex(json.specularTint);
			if (json.shininess !== undefined) material.shininess = json.shininess;
			if (json.clearcoat !== undefined) material.clearcoat = json.clearcoat;
			if (json.clearcoatRoughness !== undefined) material.clearcoatRoughness = json.clearcoatRoughness;
			if (json.transmission !== undefined) material.transmission = json.transmission;
			if (json.thickness !== undefined) material.thickness = json.thickness;
			if (json.attenuationDistance !== undefined) material.attenuationDistance = json.attenuationDistance;
			if (json.attenuationTint !== undefined && material.attenuationTint !== undefined) material.attenuationTint.setHex(json.attenuationTint);
			if (json.fog !== undefined) material.fog = json.fog;
			if (json.flatShading !== undefined) material.flatShading = json.flatShading;
			if (json.blending !== undefined) material.blending = json.blending;
			if (json.combine !== undefined) material.combine = json.combine;
			if (json.side !== undefined) material.side = json.side;
			if (json.shadowSide !== undefined) material.shadowSide = json.shadowSide;
			if (json.opacity !== undefined) material.opacity = json.opacity;
			if (json.format !== undefined) material.format = json.format;
			if (json.transparent !== undefined) material.transparent = json.transparent;
			if (json.alphaTest !== undefined) material.alphaTest = json.alphaTest;
			if (json.depthTest !== undefined) material.depthTest = json.depthTest;
			if (json.depthWrite !== undefined) material.depthWrite = json.depthWrite;
			if (json.colorWrite !== undefined) material.colorWrite = json.colorWrite;
			if (json.stencilWrite !== undefined) material.stencilWrite = json.stencilWrite;
			if (json.stencilWriteMask !== undefined) material.stencilWriteMask = json.stencilWriteMask;
			if (json.stencilFunc !== undefined) material.stencilFunc = json.stencilFunc;
			if (json.stencilRef !== undefined) material.stencilRef = json.stencilRef;
			if (json.stencilFuncMask !== undefined) material.stencilFuncMask = json.stencilFuncMask;
			if (json.stencilFail !== undefined) material.stencilFail = json.stencilFail;
			if (json.stencilZFail !== undefined) material.stencilZFail = json.stencilZFail;
			if (json.stencilZPass !== undefined) material.stencilZPass = json.stencilZPass;
			if (json.wireframe !== undefined) material.wireframe = json.wireframe;
			if (json.wireframeLinewidth !== undefined) material.wireframeLinewidth = json.wireframeLinewidth;
			if (json.wireframeLinecap !== undefined) material.wireframeLinecap = json.wireframeLinecap;
			if (json.wireframeLinejoin !== undefined) material.wireframeLinejoin = json.wireframeLinejoin;
			if (json.rotation !== undefined) material.rotation = json.rotation;
			if (json.linewidth !== 1) material.linewidth = json.linewidth;
			if (json.dashSize !== undefined) material.dashSize = json.dashSize;
			if (json.gapSize !== undefined) material.gapSize = json.gapSize;
			if (json.scale !== undefined) material.scale = json.scale;
			if (json.polygonOffset !== undefined) material.polygonOffset = json.polygonOffset;
			if (json.polygonOffsetFactor !== undefined) material.polygonOffsetFactor = json.polygonOffsetFactor;
			if (json.polygonOffsetUnits !== undefined) material.polygonOffsetUnits = json.polygonOffsetUnits;
			if (json.dithering !== undefined) material.dithering = json.dithering;
			if (json.alphaToCoverage !== undefined) material.alphaToCoverage = json.alphaToCoverage;
			if (json.premultipliedAlpha !== undefined) material.premultipliedAlpha = json.premultipliedAlpha;
			if (json.visible !== undefined) material.visible = json.visible;
			if (json.toneMapped !== undefined) material.toneMapped = json.toneMapped;
			if (json.userData !== undefined) material.userData = json.userData;

			if (json.vertexColors !== undefined) {
				if (typeof json.vertexColors === 'number') {
					material.vertexColors = json.vertexColors > 0 ? true : false;
				} else {
					material.vertexColors = json.vertexColors;
				}
			} // Shader Material


			if (json.uniforms !== undefined) {
				for (const name in json.uniforms) {
					const uniform = json.uniforms[name];
					material.uniforms[name] = {};

					switch (uniform.type) {
						case 't':
							material.uniforms[name].value = getTexture(uniform.value);
							break;

						case 'c':
							material.uniforms[name].value = new Color().setHex(uniform.value);
							break;

						case 'v2':
							material.uniforms[name].value = new Vector2().fromArray(uniform.value);
							break;

						case 'v3':
							material.uniforms[name].value = new Vector3().fromArray(uniform.value);
							break;

						case 'v4':
							material.uniforms[name].value = new Vector4().fromArray(uniform.value);
							break;

						case 'm3':
							material.uniforms[name].value = new Matrix3().fromArray(uniform.value);
							break;

						case 'm4':
							material.uniforms[name].value = new Matrix4().fromArray(uniform.value);
							break;

						default:
							material.uniforms[name].value = uniform.value;
					}
				}
			}

			if (json.defines !== undefined) material.defines = json.defines;
			if (json.vertexShader !== undefined) material.vertexShader = json.vertexShader;
			if (json.fragmentShader !== undefined) material.fragmentShader = json.fragmentShader;

			if (json.extensions !== undefined) {
				for (const key in json.extensions) {
					material.extensions[key] = json.extensions[key];
				}
			} // Deprecated


			if (json.shading !== undefined) material.flatShading = json.shading === 1; // THREE.FlatShading
			// for PointsMaterial

			if (json.size !== undefined) material.size = json.size;
			if (json.sizeAttenuation !== undefined) material.sizeAttenuation = json.sizeAttenuation; // maps

			if (json.map !== undefined) material.map = getTexture(json.map);
			if (json.matcap !== undefined) material.matcap = getTexture(json.matcap);
			if (json.alphaMap !== undefined) material.alphaMap = getTexture(json.alphaMap);
			if (json.bumpMap !== undefined) material.bumpMap = getTexture(json.bumpMap);
			if (json.bumpScale !== undefined) material.bumpScale = json.bumpScale;
			if (json.normalMap !== undefined) material.normalMap = getTexture(json.normalMap);
			if (json.normalMapType !== undefined) material.normalMapType = json.normalMapType;

			if (json.normalScale !== undefined) {
				let normalScale = json.normalScale;

				if (Array.isArray(normalScale) === false) {
					// Blender exporter used to export a scalar. See #7459
					normalScale = [normalScale, normalScale];
				}

				material.normalScale = new Vector2().fromArray(normalScale);
			}

			if (json.displacementMap !== undefined) material.displacementMap = getTexture(json.displacementMap);
			if (json.displacementScale !== undefined) material.displacementScale = json.displacementScale;
			if (json.displacementBias !== undefined) material.displacementBias = json.displacementBias;
			if (json.roughnessMap !== undefined) material.roughnessMap = getTexture(json.roughnessMap);
			if (json.metalnessMap !== undefined) material.metalnessMap = getTexture(json.metalnessMap);
			if (json.emissiveMap !== undefined) material.emissiveMap = getTexture(json.emissiveMap);
			if (json.emissiveIntensity !== undefined) material.emissiveIntensity = json.emissiveIntensity;
			if (json.specularMap !== undefined) material.specularMap = getTexture(json.specularMap);
			if (json.specularIntensityMap !== undefined) material.specularIntensityMap = getTexture(json.specularIntensityMap);
			if (json.specularTintMap !== undefined) material.specularTintMap = getTexture(json.specularTintMap);
			if (json.envMap !== undefined) material.envMap = getTexture(json.envMap);
			if (json.envMapIntensity !== undefined) material.envMapIntensity = json.envMapIntensity;
			if (json.reflectivity !== undefined) material.reflectivity = json.reflectivity;
			if (json.refractionRatio !== undefined) material.refractionRatio = json.refractionRatio;
			if (json.lightMap !== undefined) material.lightMap = getTexture(json.lightMap);
			if (json.lightMapIntensity !== undefined) material.lightMapIntensity = json.lightMapIntensity;
			if (json.aoMap !== undefined) material.aoMap = getTexture(json.aoMap);
			if (json.aoMapIntensity !== undefined) material.aoMapIntensity = json.aoMapIntensity;
			if (json.gradientMap !== undefined) material.gradientMap = getTexture(json.gradientMap);
			if (json.clearcoatMap !== undefined) material.clearcoatMap = getTexture(json.clearcoatMap);
			if (json.clearcoatRoughnessMap !== undefined) material.clearcoatRoughnessMap = getTexture(json.clearcoatRoughnessMap);
			if (json.clearcoatNormalMap !== undefined) material.clearcoatNormalMap = getTexture(json.clearcoatNormalMap);
			if (json.clearcoatNormalScale !== undefined) material.clearcoatNormalScale = new Vector2().fromArray(json.clearcoatNormalScale);
			if (json.transmissionMap !== undefined) material.transmissionMap = getTexture(json.transmissionMap);
			if (json.thicknessMap !== undefined) material.thicknessMap = getTexture(json.thicknessMap);
			return material;
		}

		setTextures(value) {
			this.textures = value;
			return this;
		}

	}

	class LoaderUtils {
		static decodeText(array) {
			if (typeof TextDecoder !== 'undefined') {
				return new TextDecoder().decode(array);
			} // Avoid the String.fromCharCode.apply(null, array) shortcut, which
			// throws a "maximum call stack size exceeded" error for large arrays.


			let s = '';

			for (let i = 0, il = array.length; i < il; i++) {
				// Implicitly assumes little-endian.
				s += String.fromCharCode(array[i]);
			}

			try {
				// merges multi-byte utf-8 characters.
				return decodeURIComponent(escape(s));
			} catch (e) {
				// see #16358
				return s;
			}
		}

		static extractUrlBase(url) {
			const index = url.lastIndexOf('/');
			if (index === -1) return './';
			return url.substr(0, index + 1);
		}

	}

	class InstancedBufferGeometry extends BufferGeometry {
		constructor() {
			super();
			this.type = 'InstancedBufferGeometry';
			this.instanceCount = Infinity;
		}

		copy(source) {
			super.copy(source);
			this.instanceCount = source.instanceCount;
			return this;
		}

		clone() {
			return new this.constructor().copy(this);
		}

		toJSON() {
			const data = super.toJSON(this);
			data.instanceCount = this.instanceCount;
			data.isInstancedBufferGeometry = true;
			return data;
		}

	}

	InstancedBufferGeometry.prototype.isInstancedBufferGeometry = true;

	class BufferGeometryLoader extends Loader {
		constructor(manager) {
			super(manager);
		}

		load(url, onLoad, onProgress, onError) {
			const scope = this;
			const loader = new FileLoader(scope.manager);
			loader.setPath(scope.path);
			loader.setRequestHeader(scope.requestHeader);
			loader.setWithCredentials(scope.withCredentials);
			loader.load(url, function (text) {
				try {
					onLoad(scope.parse(JSON.parse(text)));
				} catch (e) {
					if (onError) {
						onError(e);
					} else {
						console.error(e);
					}

					scope.manager.itemError(url);
				}
			}, onProgress, onError);
		}

		parse(json) {
			const interleavedBufferMap = {};
			const arrayBufferMap = {};

			function getInterleavedBuffer(json, uuid) {
				if (interleavedBufferMap[uuid] !== undefined) return interleavedBufferMap[uuid];
				const interleavedBuffers = json.interleavedBuffers;
				const interleavedBuffer = interleavedBuffers[uuid];
				const buffer = getArrayBuffer(json, interleavedBuffer.buffer);
				const array = getTypedArray(interleavedBuffer.type, buffer);
				const ib = new InterleavedBuffer(array, interleavedBuffer.stride);
				ib.uuid = interleavedBuffer.uuid;
				interleavedBufferMap[uuid] = ib;
				return ib;
			}

			function getArrayBuffer(json, uuid) {
				if (arrayBufferMap[uuid] !== undefined) return arrayBufferMap[uuid];
				const arrayBuffers = json.arrayBuffers;
				const arrayBuffer = arrayBuffers[uuid];
				const ab = new Uint32Array(arrayBuffer).buffer;
				arrayBufferMap[uuid] = ab;
				return ab;
			}

			const geometry = json.isInstancedBufferGeometry ? new InstancedBufferGeometry() : new BufferGeometry();
			const index = json.data.index;

			if (index !== undefined) {
				const typedArray = getTypedArray(index.type, index.array);
				geometry.setIndex(new BufferAttribute(typedArray, 1));
			}

			const attributes = json.data.attributes;

			for (const key in attributes) {
				const attribute = attributes[key];
				let bufferAttribute;

				if (attribute.isInterleavedBufferAttribute) {
					const interleavedBuffer = getInterleavedBuffer(json.data, attribute.data);
					bufferAttribute = new InterleavedBufferAttribute(interleavedBuffer, attribute.itemSize, attribute.offset, attribute.normalized);
				} else {
					const typedArray = getTypedArray(attribute.type, attribute.array);
					const bufferAttributeConstr = attribute.isInstancedBufferAttribute ? InstancedBufferAttribute : BufferAttribute;
					bufferAttribute = new bufferAttributeConstr(typedArray, attribute.itemSize, attribute.normalized);
				}

				if (attribute.name !== undefined) bufferAttribute.name = attribute.name;
				if (attribute.usage !== undefined) bufferAttribute.setUsage(attribute.usage);

				if (attribute.updateRange !== undefined) {
					bufferAttribute.updateRange.offset = attribute.updateRange.offset;
					bufferAttribute.updateRange.count = attribute.updateRange.count;
				}

				geometry.setAttribute(key, bufferAttribute);
			}

			const morphAttributes = json.data.morphAttributes;

			if (morphAttributes) {
				for (const key in morphAttributes) {
					const attributeArray = morphAttributes[key];
					const array = [];

					for (let i = 0, il = attributeArray.length; i < il; i++) {
						const attribute = attributeArray[i];
						let bufferAttribute;

						if (attribute.isInterleavedBufferAttribute) {
							const interleavedBuffer = getInterleavedBuffer(json.data, attribute.data);
							bufferAttribute = new InterleavedBufferAttribute(interleavedBuffer, attribute.itemSize, attribute.offset, attribute.normalized);
						} else {
							const typedArray = getTypedArray(attribute.type, attribute.array);
							bufferAttribute = new BufferAttribute(typedArray, attribute.itemSize, attribute.normalized);
						}

						if (attribute.name !== undefined) bufferAttribute.name = attribute.name;
						array.push(bufferAttribute);
					}

					geometry.morphAttributes[key] = array;
				}
			}

			const morphTargetsRelative = json.data.morphTargetsRelative;

			if (morphTargetsRelative) {
				geometry.morphTargetsRelative = true;
			}

			const groups = json.data.groups || json.data.drawcalls || json.data.offsets;

			if (groups !== undefined) {
				for (let i = 0, n = groups.length; i !== n; ++i) {
					const group = groups[i];
					geometry.addGroup(group.start, group.count, group.materialIndex);
				}
			}

			const boundingSphere = json.data.boundingSphere;

			if (boundingSphere !== undefined) {
				const center = new Vector3();

				if (boundingSphere.center !== undefined) {
					center.fromArray(boundingSphere.center);
				}

				geometry.boundingSphere = new Sphere(center, boundingSphere.radius);
			}

			if (json.name) geometry.name = json.name;
			if (json.userData) geometry.userData = json.userData;
			return geometry;
		}

	}

	class ObjectLoader extends Loader {
		constructor(manager) {
			super(manager);
		}

		load(url, onLoad, onProgress, onError) {
			const scope = this;
			const path = this.path === '' ? LoaderUtils.extractUrlBase(url) : this.path;
			this.resourcePath = this.resourcePath || path;
			const loader = new FileLoader(this.manager);
			loader.setPath(this.path);
			loader.setRequestHeader(this.requestHeader);
			loader.setWithCredentials(this.withCredentials);
			loader.load(url, function (text) {
				let json = null;

				try {
					json = JSON.parse(text);
				} catch (error) {
					if (onError !== undefined) onError(error);
					console.error('THREE:ObjectLoader: Can\'t parse ' + url + '.', error.message);
					return;
				}

				const metadata = json.metadata;

				if (metadata === undefined || metadata.type === undefined || metadata.type.toLowerCase() === 'geometry') {
					console.error('THREE.ObjectLoader: Can\'t load ' + url);
					return;
				}

				scope.parse(json, onLoad);
			}, onProgress, onError);
		}

		async loadAsync(url, onProgress) {
			const scope = this;
			const path = this.path === '' ? LoaderUtils.extractUrlBase(url) : this.path;
			this.resourcePath = this.resourcePath || path;
			const loader = new FileLoader(this.manager);
			loader.setPath(this.path);
			loader.setRequestHeader(this.requestHeader);
			loader.setWithCredentials(this.withCredentials);
			const text = await loader.loadAsync(url, onProgress);
			const json = JSON.parse(text);
			const metadata = json.metadata;

			if (metadata === undefined || metadata.type === undefined || metadata.type.toLowerCase() === 'geometry') {
				throw new Error('THREE.ObjectLoader: Can\'t load ' + url);
			}

			return await scope.parseAsync(json);
		}

		parse(json, onLoad) {
			const animations = this.parseAnimations(json.animations);
			const shapes = this.parseShapes(json.shapes);
			const geometries = this.parseGeometries(json.geometries, shapes);
			const images = this.parseImages(json.images, function () {
				if (onLoad !== undefined) onLoad(object);
			});
			const textures = this.parseTextures(json.textures, images);
			const materials = this.parseMaterials(json.materials, textures);
			const object = this.parseObject(json.object, geometries, materials, textures, animations);
			const skeletons = this.parseSkeletons(json.skeletons, object);
			this.bindSkeletons(object, skeletons); //

			if (onLoad !== undefined) {
				let hasImages = false;

				for (const uuid in images) {
					if (images[uuid] instanceof HTMLImageElement) {
						hasImages = true;
						break;
					}
				}

				if (hasImages === false) onLoad(object);
			}

			return object;
		}

		async parseAsync(json) {
			const animations = this.parseAnimations(json.animations);
			const shapes = this.parseShapes(json.shapes);
			const geometries = this.parseGeometries(json.geometries, shapes);
			const images = await this.parseImagesAsync(json.images);
			const textures = this.parseTextures(json.textures, images);
			const materials = this.parseMaterials(json.materials, textures);
			const object = this.parseObject(json.object, geometries, materials, textures, animations);
			const skeletons = this.parseSkeletons(json.skeletons, object);
			this.bindSkeletons(object, skeletons);
			return object;
		}

		parseShapes(json) {
			const shapes = {};

			if (json !== undefined) {
				for (let i = 0, l = json.length; i < l; i++) {
					const shape = new Shape().fromJSON(json[i]);
					shapes[shape.uuid] = shape;
				}
			}

			return shapes;
		}

		parseSkeletons(json, object) {
			const skeletons = {};
			const bones = {}; // generate bone lookup table

			object.traverse(function (child) {
				if (child.isBone) bones[child.uuid] = child;
			}); // create skeletons

			if (json !== undefined) {
				for (let i = 0, l = json.length; i < l; i++) {
					const skeleton = new Skeleton().fromJSON(json[i], bones);
					skeletons[skeleton.uuid] = skeleton;
				}
			}

			return skeletons;
		}

		parseGeometries(json, shapes) {
			const geometries = {};

			if (json !== undefined) {
				const bufferGeometryLoader = new BufferGeometryLoader();

				for (let i = 0, l = json.length; i < l; i++) {
					let geometry;
					const data = json[i];

					switch (data.type) {
						case 'BufferGeometry':
						case 'InstancedBufferGeometry':
							geometry = bufferGeometryLoader.parse(data);
							break;

						case 'Geometry':
							if ('THREE' in window && 'LegacyJSONLoader' in THREE) {
								var geometryLoader = new THREE.LegacyJSONLoader();
								geometry = geometryLoader.parse(data, this.resourcePath).geometry;
							} else {
								console.error('THREE.ObjectLoader: You have to import LegacyJSONLoader in order load geometry data of type "Geometry".');
							}

							break;

						default:
							if (data.type in Geometries) {
								geometry = Geometries[data.type].fromJSON(data, shapes);
							} else {
								console.warn(`THREE.ObjectLoader: Unsupported geometry type "${data.type}"`);
							}

					}

					geometry.uuid = data.uuid;
					if (data.name !== undefined) geometry.name = data.name;
					if (geometry.isBufferGeometry === true && data.userData !== undefined) geometry.userData = data.userData;
					geometries[data.uuid] = geometry;
				}
			}

			return geometries;
		}

		parseMaterials(json, textures) {
			const cache = {}; // MultiMaterial

			const materials = {};

			if (json !== undefined) {
				const loader = new MaterialLoader();
				loader.setTextures(textures);

				for (let i = 0, l = json.length; i < l; i++) {
					const data = json[i];

					if (data.type === 'MultiMaterial') {
						// Deprecated
						const array = [];

						for (let j = 0; j < data.materials.length; j++) {
							const material = data.materials[j];

							if (cache[material.uuid] === undefined) {
								cache[material.uuid] = loader.parse(material);
							}

							array.push(cache[material.uuid]);
						}

						materials[data.uuid] = array;
					} else {
						if (cache[data.uuid] === undefined) {
							cache[data.uuid] = loader.parse(data);
						}

						materials[data.uuid] = cache[data.uuid];
					}
				}
			}

			return materials;
		}

		parseAnimations(json) {
			const animations = {};

			if (json !== undefined) {
				for (let i = 0; i < json.length; i++) {
					const data = json[i];
					const clip = AnimationClip.parse(data);
					animations[clip.uuid] = clip;
				}
			}

			return animations;
		}

		parseImages(json, onLoad) {
			const scope = this;
			const images = {};
			let loader;

			function loadImage(url) {
				scope.manager.itemStart(url);
				return loader.load(url, function () {
					scope.manager.itemEnd(url);
				}, undefined, function () {
					scope.manager.itemError(url);
					scope.manager.itemEnd(url);
				});
			}

			function deserializeImage(image) {
				if (typeof image === 'string') {
					const url = image;
					const path = /^(\/\/)|([a-z]+:(\/\/)?)/i.test(url) ? url : scope.resourcePath + url;
					return loadImage(path);
				} else {
					if (image.data) {
						return {
							data: getTypedArray(image.type, image.data),
							width: image.width,
							height: image.height
						};
					} else {
						return null;
					}
				}
			}

			if (json !== undefined && json.length > 0) {
				const manager = new LoadingManager(onLoad);
				loader = new ImageLoader(manager);
				loader.setCrossOrigin(this.crossOrigin);

				for (let i = 0, il = json.length; i < il; i++) {
					const image = json[i];
					const url = image.url;

					if (Array.isArray(url)) {
						// load array of images e.g CubeTexture
						images[image.uuid] = [];

						for (let j = 0, jl = url.length; j < jl; j++) {
							const currentUrl = url[j];
							const deserializedImage = deserializeImage(currentUrl);

							if (deserializedImage !== null) {
								if (deserializedImage instanceof HTMLImageElement) {
									images[image.uuid].push(deserializedImage);
								} else {
									// special case: handle array of data textures for cube textures
									images[image.uuid].push(new DataTexture(deserializedImage.data, deserializedImage.width, deserializedImage.height));
								}
							}
						}
					} else {
						// load single image
						const deserializedImage = deserializeImage(image.url);

						if (deserializedImage !== null) {
							images[image.uuid] = deserializedImage;
						}
					}
				}
			}

			return images;
		}

		async parseImagesAsync(json) {
			const scope = this;
			const images = {};
			let loader;

			async function deserializeImage(image) {
				if (typeof image === 'string') {
					const url = image;
					const path = /^(\/\/)|([a-z]+:(\/\/)?)/i.test(url) ? url : scope.resourcePath + url;
					return await loader.loadAsync(path);
				} else {
					if (image.data) {
						return {
							data: getTypedArray(image.type, image.data),
							width: image.width,
							height: image.height
						};
					} else {
						return null;
					}
				}
			}

			if (json !== undefined && json.length > 0) {
				loader = new ImageLoader(this.manager);
				loader.setCrossOrigin(this.crossOrigin);

				for (let i = 0, il = json.length; i < il; i++) {
					const image = json[i];
					const url = image.url;

					if (Array.isArray(url)) {
						// load array of images e.g CubeTexture
						images[image.uuid] = [];

						for (let j = 0, jl = url.length; j < jl; j++) {
							const currentUrl = url[j];
							const deserializedImage = await deserializeImage(currentUrl);

							if (deserializedImage !== null) {
								if (deserializedImage instanceof HTMLImageElement) {
									images[image.uuid].push(deserializedImage);
								} else {
									// special case: handle array of data textures for cube textures
									images[image.uuid].push(new DataTexture(deserializedImage.data, deserializedImage.width, deserializedImage.height));
								}
							}
						}
					} else {
						// load single image
						const deserializedImage = await deserializeImage(image.url);

						if (deserializedImage !== null) {
							images[image.uuid] = deserializedImage;
						}
					}
				}
			}

			return images;
		}

		parseTextures(json, images) {
			function parseConstant(value, type) {
				if (typeof value === 'number') return value;
				console.warn('THREE.ObjectLoader.parseTexture: Constant should be in numeric form.', value);
				return type[value];
			}

			const textures = {};

			if (json !== undefined) {
				for (let i = 0, l = json.length; i < l; i++) {
					const data = json[i];

					if (data.image === undefined) {
						console.warn('THREE.ObjectLoader: No "image" specified for', data.uuid);
					}

					if (images[data.image] === undefined) {
						console.warn('THREE.ObjectLoader: Undefined image', data.image);
					}

					let texture;
					const image = images[data.image];

					if (Array.isArray(image)) {
						texture = new CubeTexture(image);
						if (image.length === 6) texture.needsUpdate = true;
					} else {
						if (image && image.data) {
							texture = new DataTexture(image.data, image.width, image.height);
						} else {
							texture = new Texture(image);
						}

						if (image) texture.needsUpdate = true; // textures can have undefined image data
					}

					texture.uuid = data.uuid;
					if (data.name !== undefined) texture.name = data.name;
					if (data.mapping !== undefined) texture.mapping = parseConstant(data.mapping, TEXTURE_MAPPING);
					if (data.offset !== undefined) texture.offset.fromArray(data.offset);
					if (data.repeat !== undefined) texture.repeat.fromArray(data.repeat);
					if (data.center !== undefined) texture.center.fromArray(data.center);
					if (data.rotation !== undefined) texture.rotation = data.rotation;

					if (data.wrap !== undefined) {
						texture.wrapS = parseConstant(data.wrap[0], TEXTURE_WRAPPING);
						texture.wrapT = parseConstant(data.wrap[1], TEXTURE_WRAPPING);
					}

					if (data.format !== undefined) texture.format = data.format;
					if (data.type !== undefined) texture.type = data.type;
					if (data.encoding !== undefined) texture.encoding = data.encoding;
					if (data.minFilter !== undefined) texture.minFilter = parseConstant(data.minFilter, TEXTURE_FILTER);
					if (data.magFilter !== undefined) texture.magFilter = parseConstant(data.magFilter, TEXTURE_FILTER);
					if (data.anisotropy !== undefined) texture.anisotropy = data.anisotropy;
					if (data.flipY !== undefined) texture.flipY = data.flipY;
					if (data.premultiplyAlpha !== undefined) texture.premultiplyAlpha = data.premultiplyAlpha;
					if (data.unpackAlignment !== undefined) texture.unpackAlignment = data.unpackAlignment;
					textures[data.uuid] = texture;
				}
			}

			return textures;
		}

		parseObject(data, geometries, materials, textures, animations) {
			let object;

			function getGeometry(name) {
				if (geometries[name] === undefined) {
					console.warn('THREE.ObjectLoader: Undefined geometry', name);
				}

				return geometries[name];
			}

			function getMaterial(name) {
				if (name === undefined) return undefined;

				if (Array.isArray(name)) {
					const array = [];

					for (let i = 0, l = name.length; i < l; i++) {
						const uuid = name[i];

						if (materials[uuid] === undefined) {
							console.warn('THREE.ObjectLoader: Undefined material', uuid);
						}

						array.push(materials[uuid]);
					}

					return array;
				}

				if (materials[name] === undefined) {
					console.warn('THREE.ObjectLoader: Undefined material', name);
				}

				return materials[name];
			}

			function getTexture(uuid) {
				if (textures[uuid] === undefined) {
					console.warn('THREE.ObjectLoader: Undefined texture', uuid);
				}

				return textures[uuid];
			}

			let geometry, material;

			switch (data.type) {
				case 'Scene':
					object = new Scene();

					if (data.background !== undefined) {
						if (Number.isInteger(data.background)) {
							object.background = new Color(data.background);
						} else {
							object.background = getTexture(data.background);
						}
					}

					if (data.environment !== undefined) {
						object.environment = getTexture(data.environment);
					}

					if (data.fog !== undefined) {
						if (data.fog.type === 'Fog') {
							object.fog = new Fog(data.fog.color, data.fog.near, data.fog.far);
						} else if (data.fog.type === 'FogExp2') {
							object.fog = new FogExp2(data.fog.color, data.fog.density);
						}
					}

					break;

				case 'PerspectiveCamera':
					object = new PerspectiveCamera(data.fov, data.aspect, data.near, data.far);
					if (data.focus !== undefined) object.focus = data.focus;
					if (data.zoom !== undefined) object.zoom = data.zoom;
					if (data.filmGauge !== undefined) object.filmGauge = data.filmGauge;
					if (data.filmOffset !== undefined) object.filmOffset = data.filmOffset;
					if (data.view !== undefined) object.view = Object.assign({}, data.view);
					break;

				case 'OrthographicCamera':
					object = new OrthographicCamera(data.left, data.right, data.top, data.bottom, data.near, data.far);
					if (data.zoom !== undefined) object.zoom = data.zoom;
					if (data.view !== undefined) object.view = Object.assign({}, data.view);
					break;

				case 'AmbientLight':
					object = new AmbientLight(data.color, data.intensity);
					break;

				case 'DirectionalLight':
					object = new DirectionalLight(data.color, data.intensity);
					break;

				case 'PointLight':
					object = new PointLight(data.color, data.intensity, data.distance, data.decay);
					break;

				case 'RectAreaLight':
					object = new RectAreaLight(data.color, data.intensity, data.width, data.height);
					break;

				case 'SpotLight':
					object = new SpotLight(data.color, data.intensity, data.distance, data.angle, data.penumbra, data.decay);
					break;

				case 'HemisphereLight':
					object = new HemisphereLight(data.color, data.groundColor, data.intensity);
					break;

				case 'LightProbe':
					object = new LightProbe().fromJSON(data);
					break;

				case 'SkinnedMesh':
					geometry = getGeometry(data.geometry);
					material = getMaterial(data.material);
					object = new SkinnedMesh(geometry, material);
					if (data.bindMode !== undefined) object.bindMode = data.bindMode;
					if (data.bindMatrix !== undefined) object.bindMatrix.fromArray(data.bindMatrix);
					if (data.skeleton !== undefined) object.skeleton = data.skeleton;
					break;

				case 'Mesh':
					geometry = getGeometry(data.geometry);
					material = getMaterial(data.material);
					object = new Mesh(geometry, material);
					break;

				case 'InstancedMesh':
					geometry = getGeometry(data.geometry);
					material = getMaterial(data.material);
					const count = data.count;
					const instanceMatrix = data.instanceMatrix;
					const instanceColor = data.instanceColor;
					object = new InstancedMesh(geometry, material, count);
					object.instanceMatrix = new InstancedBufferAttribute(new Float32Array(instanceMatrix.array), 16);
					if (instanceColor !== undefined) object.instanceColor = new InstancedBufferAttribute(new Float32Array(instanceColor.array), instanceColor.itemSize);
					break;

				case 'LOD':
					object = new LOD();
					break;

				case 'Line':
					object = new Line(getGeometry(data.geometry), getMaterial(data.material));
					break;

				case 'LineLoop':
					object = new LineLoop(getGeometry(data.geometry), getMaterial(data.material));
					break;

				case 'LineSegments':
					object = new LineSegments(getGeometry(data.geometry), getMaterial(data.material));
					break;

				case 'PointCloud':
				case 'Points':
					object = new Points(getGeometry(data.geometry), getMaterial(data.material));
					break;

				case 'Sprite':
					object = new Sprite(getMaterial(data.material));
					break;

				case 'Group':
					object = new Group();
					break;

				case 'Bone':
					object = new Bone();
					break;

				default:
					object = new Object3D();
			}

			object.uuid = data.uuid;
			if (data.name !== undefined) object.name = data.name;

			if (data.matrix !== undefined) {
				object.matrix.fromArray(data.matrix);
				if (data.matrixAutoUpdate !== undefined) object.matrixAutoUpdate = data.matrixAutoUpdate;
				if (object.matrixAutoUpdate) object.matrix.decompose(object.position, object.quaternion, object.scale);
			} else {
				if (data.position !== undefined) object.position.fromArray(data.position);
				if (data.rotation !== undefined) object.rotation.fromArray(data.rotation);
				if (data.quaternion !== undefined) object.quaternion.fromArray(data.quaternion);
				if (data.scale !== undefined) object.scale.fromArray(data.scale);
			}

			if (data.castShadow !== undefined) object.castShadow = data.castShadow;
			if (data.receiveShadow !== undefined) object.receiveShadow = data.receiveShadow;

			if (data.shadow) {
				if (data.shadow.bias !== undefined) object.shadow.bias = data.shadow.bias;
				if (data.shadow.normalBias !== undefined) object.shadow.normalBias = data.shadow.normalBias;
				if (data.shadow.radius !== undefined) object.shadow.radius = data.shadow.radius;
				if (data.shadow.mapSize !== undefined) object.shadow.mapSize.fromArray(data.shadow.mapSize);
				if (data.shadow.camera !== undefined) object.shadow.camera = this.parseObject(data.shadow.camera);
			}

			if (data.visible !== undefined) object.visible = data.visible;
			if (data.frustumCulled !== undefined) object.frustumCulled = data.frustumCulled;
			if (data.renderOrder !== undefined) object.renderOrder = data.renderOrder;
			if (data.userData !== undefined) object.userData = data.userData;
			if (data.layers !== undefined) object.layers.mask = data.layers;

			if (data.children !== undefined) {
				const children = data.children;

				for (let i = 0; i < children.length; i++) {
					object.add(this.parseObject(children[i], geometries, materials, textures, animations));
				}
			}

			if (data.animations !== undefined) {
				const objectAnimations = data.animations;

				for (let i = 0; i < objectAnimations.length; i++) {
					const uuid = objectAnimations[i];
					object.animations.push(animations[uuid]);
				}
			}

			if (data.type === 'LOD') {
				if (data.autoUpdate !== undefined) object.autoUpdate = data.autoUpdate;
				const levels = data.levels;

				for (let l = 0; l < levels.length; l++) {
					const level = levels[l];
					const child = object.getObjectByProperty('uuid', level.object);

					if (child !== undefined) {
						object.addLevel(child, level.distance);
					}
				}
			}

			return object;
		}

		bindSkeletons(object, skeletons) {
			if (Object.keys(skeletons).length === 0) return;
			object.traverse(function (child) {
				if (child.isSkinnedMesh === true && child.skeleton !== undefined) {
					const skeleton = skeletons[child.skeleton];

					if (skeleton === undefined) {
						console.warn('THREE.ObjectLoader: No skeleton found with UUID:', child.skeleton);
					} else {
						child.bind(skeleton, child.bindMatrix);
					}
				}
			});
		}
		/* DEPRECATED */


		setTexturePath(value) {
			console.warn('THREE.ObjectLoader: .setTexturePath() has been renamed to .setResourcePath().');
			return this.setResourcePath(value);
		}

	}

	const TEXTURE_MAPPING = {
		UVMapping: UVMapping,
		CubeReflectionMapping: CubeReflectionMapping,
		CubeRefractionMapping: CubeRefractionMapping,
		EquirectangularReflectionMapping: EquirectangularReflectionMapping,
		EquirectangularRefractionMapping: EquirectangularRefractionMapping,
		CubeUVReflectionMapping: CubeUVReflectionMapping,
		CubeUVRefractionMapping: CubeUVRefractionMapping
	};
	const TEXTURE_WRAPPING = {
		RepeatWrapping: RepeatWrapping,
		ClampToEdgeWrapping: ClampToEdgeWrapping,
		MirroredRepeatWrapping: MirroredRepeatWrapping
	};
	const TEXTURE_FILTER = {
		NearestFilter: NearestFilter,
		NearestMipmapNearestFilter: NearestMipmapNearestFilter,
		NearestMipmapLinearFilter: NearestMipmapLinearFilter,
		LinearFilter: LinearFilter,
		LinearMipmapNearestFilter: LinearMipmapNearestFilter,
		LinearMipmapLinearFilter: LinearMipmapLinearFilter
	};

	class ImageBitmapLoader extends Loader {
		constructor(manager) {
			super(manager);

			if (typeof createImageBitmap === 'undefined') {
				console.warn('THREE.ImageBitmapLoader: createImageBitmap() not supported.');
			}

			if (typeof fetch === 'undefined') {
				console.warn('THREE.ImageBitmapLoader: fetch() not supported.');
			}

			this.options = {
				premultiplyAlpha: 'none'
			};
		}

		setOptions(options) {
			this.options = options;
			return this;
		}

		load(url, onLoad, onProgress, onError) {
			if (url === undefined) url = '';
			if (this.path !== undefined) url = this.path + url;
			url = this.manager.resolveURL(url);
			const scope = this;
			const cached = Cache.get(url);

			if (cached !== undefined) {
				scope.manager.itemStart(url);
				setTimeout(function () {
					if (onLoad) onLoad(cached);
					scope.manager.itemEnd(url);
				}, 0);
				return cached;
			}

			const fetchOptions = {};
			fetchOptions.credentials = this.crossOrigin === 'anonymous' ? 'same-origin' : 'include';
			fetchOptions.headers = this.requestHeader;
			fetch(url, fetchOptions).then(function (res) {
				return res.blob();
			}).then(function (blob) {
				return createImageBitmap(blob, Object.assign(scope.options, {
					colorSpaceConversion: 'none'
				}));
			}).then(function (imageBitmap) {
				Cache.add(url, imageBitmap);
				if (onLoad) onLoad(imageBitmap);
				scope.manager.itemEnd(url);
			}).catch(function (e) {
				if (onError) onError(e);
				scope.manager.itemError(url);
				scope.manager.itemEnd(url);
			});
			scope.manager.itemStart(url);
		}

	}

	ImageBitmapLoader.prototype.isImageBitmapLoader = true;

	let _context;

	const AudioContext = {
		getContext: function () {
			if (_context === undefined) {
				_context = new (window.AudioContext || window.webkitAudioContext)();
			}

			return _context;
		},
		setContext: function (value) {
			_context = value;
		}
	};

	class AudioLoader extends Loader {
		constructor(manager) {
			super(manager);
		}

		load(url, onLoad, onProgress, onError) {
			const scope = this;
			const loader = new FileLoader(this.manager);
			loader.setResponseType('arraybuffer');
			loader.setPath(this.path);
			loader.setRequestHeader(this.requestHeader);
			loader.setWithCredentials(this.withCredentials);
			loader.load(url, function (buffer) {
				try {
					// Create a copy of the buffer. The `decodeAudioData` method
					// detaches the buffer when complete, preventing reuse.
					const bufferCopy = buffer.slice(0);
					const context = AudioContext.getContext();
					context.decodeAudioData(bufferCopy, function (audioBuffer) {
						onLoad(audioBuffer);
					});
				} catch (e) {
					if (onError) {
						onError(e);
					} else {
						console.error(e);
					}

					scope.manager.itemError(url);
				}
			}, onProgress, onError);
		}

	}

	class HemisphereLightProbe extends LightProbe {
		constructor(skyColor, groundColor, intensity = 1) {
			super(undefined, intensity);
			const color1 = new Color().set(skyColor);
			const color2 = new Color().set(groundColor);
			const sky = new Vector3(color1.r, color1.g, color1.b);
			const ground = new Vector3(color2.r, color2.g, color2.b); // without extra factor of PI in the shader, should = 1 / Math.sqrt( Math.PI );

			const c0 = Math.sqrt(Math.PI);
			const c1 = c0 * Math.sqrt(0.75);
			this.sh.coefficients[0].copy(sky).add(ground).multiplyScalar(c0);
			this.sh.coefficients[1].copy(sky).sub(ground).multiplyScalar(c1);
		}

	}

	HemisphereLightProbe.prototype.isHemisphereLightProbe = true;

	class AmbientLightProbe extends LightProbe {
		constructor(color, intensity = 1) {
			super(undefined, intensity);
			const color1 = new Color().set(color); // without extra factor of PI in the shader, would be 2 / Math.sqrt( Math.PI );

			this.sh.coefficients[0].set(color1.r, color1.g, color1.b).multiplyScalar(2 * Math.sqrt(Math.PI));
		}

	}

	AmbientLightProbe.prototype.isAmbientLightProbe = true;

	const _eyeRight = /*@__PURE__*/new Matrix4();

	const _eyeLeft = /*@__PURE__*/new Matrix4();

	class StereoCamera {
		constructor() {
			this.type = 'StereoCamera';
			this.aspect = 1;
			this.eyeSep = 0.064;
			this.cameraL = new PerspectiveCamera();
			this.cameraL.layers.enable(1);
			this.cameraL.matrixAutoUpdate = false;
			this.cameraR = new PerspectiveCamera();
			this.cameraR.layers.enable(2);
			this.cameraR.matrixAutoUpdate = false;
			this._cache = {
				focus: null,
				fov: null,
				aspect: null,
				near: null,
				far: null,
				zoom: null,
				eyeSep: null
			};
		}

		update(camera) {
			const cache = this._cache;
			const needsUpdate = cache.focus !== camera.focus || cache.fov !== camera.fov || cache.aspect !== camera.aspect * this.aspect || cache.near !== camera.near || cache.far !== camera.far || cache.zoom !== camera.zoom || cache.eyeSep !== this.eyeSep;

			if (needsUpdate) {
				cache.focus = camera.focus;
				cache.fov = camera.fov;
				cache.aspect = camera.aspect * this.aspect;
				cache.near = camera.near;
				cache.far = camera.far;
				cache.zoom = camera.zoom;
				cache.eyeSep = this.eyeSep; // Off-axis stereoscopic effect based on
				// http://paulbourke.net/stereographics/stereorender/

				const projectionMatrix = camera.projectionMatrix.clone();
				const eyeSepHalf = cache.eyeSep / 2;
				const eyeSepOnProjection = eyeSepHalf * cache.near / cache.focus;
				const ymax = cache.near * Math.tan(DEG2RAD * cache.fov * 0.5) / cache.zoom;
				let xmin, xmax; // translate xOffset

				_eyeLeft.elements[12] = -eyeSepHalf;
				_eyeRight.elements[12] = eyeSepHalf; // for left eye

				xmin = -ymax * cache.aspect + eyeSepOnProjection;
				xmax = ymax * cache.aspect + eyeSepOnProjection;
				projectionMatrix.elements[0] = 2 * cache.near / (xmax - xmin);
				projectionMatrix.elements[8] = (xmax + xmin) / (xmax - xmin);
				this.cameraL.projectionMatrix.copy(projectionMatrix); // for right eye

				xmin = -ymax * cache.aspect - eyeSepOnProjection;
				xmax = ymax * cache.aspect - eyeSepOnProjection;
				projectionMatrix.elements[0] = 2 * cache.near / (xmax - xmin);
				projectionMatrix.elements[8] = (xmax + xmin) / (xmax - xmin);
				this.cameraR.projectionMatrix.copy(projectionMatrix);
			}

			this.cameraL.matrixWorld.copy(camera.matrixWorld).multiply(_eyeLeft);
			this.cameraR.matrixWorld.copy(camera.matrixWorld).multiply(_eyeRight);
		}

	}

	class Clock {
		constructor(autoStart = true) {
			this.autoStart = autoStart;
			this.startTime = 0;
			this.oldTime = 0;
			this.elapsedTime = 0;
			this.running = false;
		}

		start() {
			this.startTime = now();
			this.oldTime = this.startTime;
			this.elapsedTime = 0;
			this.running = true;
		}

		stop() {
			this.getElapsedTime();
			this.running = false;
			this.autoStart = false;
		}

		getElapsedTime() {
			this.getDelta();
			return this.elapsedTime;
		}

		getDelta() {
			let diff = 0;

			if (this.autoStart && !this.running) {
				this.start();
				return 0;
			}

			if (this.running) {
				const newTime = now();
				diff = (newTime - this.oldTime) / 1000;
				this.oldTime = newTime;
				this.elapsedTime += diff;
			}

			return diff;
		}

	}

	function now() {
		return (typeof performance === 'undefined' ? Date : performance).now(); // see #10732
	}

	const _position$1 = /*@__PURE__*/new Vector3();

	const _quaternion$1 = /*@__PURE__*/new Quaternion();

	const _scale$1 = /*@__PURE__*/new Vector3();

	const _orientation$1 = /*@__PURE__*/new Vector3();

	class AudioListener extends Object3D {
		constructor() {
			super();
			this.type = 'AudioListener';
			this.context = AudioContext.getContext();
			this.gain = this.context.createGain();
			this.gain.connect(this.context.destination);
			this.filter = null;
			this.timeDelta = 0; // private

			this._clock = new Clock();
		}

		getInput() {
			return this.gain;
		}

		removeFilter() {
			if (this.filter !== null) {
				this.gain.disconnect(this.filter);
				this.filter.disconnect(this.context.destination);
				this.gain.connect(this.context.destination);
				this.filter = null;
			}

			return this;
		}

		getFilter() {
			return this.filter;
		}

		setFilter(value) {
			if (this.filter !== null) {
				this.gain.disconnect(this.filter);
				this.filter.disconnect(this.context.destination);
			} else {
				this.gain.disconnect(this.context.destination);
			}

			this.filter = value;
			this.gain.connect(this.filter);
			this.filter.connect(this.context.destination);
			return this;
		}

		getMasterVolume() {
			return this.gain.gain.value;
		}

		setMasterVolume(value) {
			this.gain.gain.setTargetAtTime(value, this.context.currentTime, 0.01);
			return this;
		}

		updateMatrixWorld(force) {
			super.updateMatrixWorld(force);
			const listener = this.context.listener;
			const up = this.up;
			this.timeDelta = this._clock.getDelta();
			this.matrixWorld.decompose(_position$1, _quaternion$1, _scale$1);

			_orientation$1.set(0, 0, -1).applyQuaternion(_quaternion$1);

			if (listener.positionX) {
				// code path for Chrome (see #14393)
				const endTime = this.context.currentTime + this.timeDelta;
				listener.positionX.linearRampToValueAtTime(_position$1.x, endTime);
				listener.positionY.linearRampToValueAtTime(_position$1.y, endTime);
				listener.positionZ.linearRampToValueAtTime(_position$1.z, endTime);
				listener.forwardX.linearRampToValueAtTime(_orientation$1.x, endTime);
				listener.forwardY.linearRampToValueAtTime(_orientation$1.y, endTime);
				listener.forwardZ.linearRampToValueAtTime(_orientation$1.z, endTime);
				listener.upX.linearRampToValueAtTime(up.x, endTime);
				listener.upY.linearRampToValueAtTime(up.y, endTime);
				listener.upZ.linearRampToValueAtTime(up.z, endTime);
			} else {
				listener.setPosition(_position$1.x, _position$1.y, _position$1.z);
				listener.setOrientation(_orientation$1.x, _orientation$1.y, _orientation$1.z, up.x, up.y, up.z);
			}
		}

	}

	class Audio extends Object3D {
		constructor(listener) {
			super();
			this.type = 'Audio';
			this.listener = listener;
			this.context = listener.context;
			this.gain = this.context.createGain();
			this.gain.connect(listener.getInput());
			this.autoplay = false;
			this.buffer = null;
			this.detune = 0;
			this.loop = false;
			this.loopStart = 0;
			this.loopEnd = 0;
			this.offset = 0;
			this.duration = undefined;
			this.playbackRate = 1;
			this.isPlaying = false;
			this.hasPlaybackControl = true;
			this.source = null;
			this.sourceType = 'empty';
			this._startedAt = 0;
			this._progress = 0;
			this._connected = false;
			this.filters = [];
		}

		getOutput() {
			return this.gain;
		}

		setNodeSource(audioNode) {
			this.hasPlaybackControl = false;
			this.sourceType = 'audioNode';
			this.source = audioNode;
			this.connect();
			return this;
		}

		setMediaElementSource(mediaElement) {
			this.hasPlaybackControl = false;
			this.sourceType = 'mediaNode';
			this.source = this.context.createMediaElementSource(mediaElement);
			this.connect();
			return this;
		}

		setMediaStreamSource(mediaStream) {
			this.hasPlaybackControl = false;
			this.sourceType = 'mediaStreamNode';
			this.source = this.context.createMediaStreamSource(mediaStream);
			this.connect();
			return this;
		}

		setBuffer(audioBuffer) {
			this.buffer = audioBuffer;
			this.sourceType = 'buffer';
			if (this.autoplay) this.play();
			return this;
		}

		play(delay = 0) {
			if (this.isPlaying === true) {
				console.warn('THREE.Audio: Audio is already playing.');
				return;
			}

			if (this.hasPlaybackControl === false) {
				console.warn('THREE.Audio: this Audio has no playback control.');
				return;
			}

			this._startedAt = this.context.currentTime + delay;
			const source = this.context.createBufferSource();
			source.buffer = this.buffer;
			source.loop = this.loop;
			source.loopStart = this.loopStart;
			source.loopEnd = this.loopEnd;
			source.onended = this.onEnded.bind(this);
			source.start(this._startedAt, this._progress + this.offset, this.duration);
			this.isPlaying = true;
			this.source = source;
			this.setDetune(this.detune);
			this.setPlaybackRate(this.playbackRate);
			return this.connect();
		}

		pause() {
			if (this.hasPlaybackControl === false) {
				console.warn('THREE.Audio: this Audio has no playback control.');
				return;
			}

			if (this.isPlaying === true) {
				// update current progress
				this._progress += Math.max(this.context.currentTime - this._startedAt, 0) * this.playbackRate;

				if (this.loop === true) {
					// ensure _progress does not exceed duration with looped audios
					this._progress = this._progress % (this.duration || this.buffer.duration);
				}

				this.source.stop();
				this.source.onended = null;
				this.isPlaying = false;
			}

			return this;
		}

		stop() {
			if (this.hasPlaybackControl === false) {
				console.warn('THREE.Audio: this Audio has no playback control.');
				return;
			}

			this._progress = 0;
			this.source.stop();
			this.source.onended = null;
			this.isPlaying = false;
			return this;
		}

		connect() {
			if (this.filters.length > 0) {
				this.source.connect(this.filters[0]);

				for (let i = 1, l = this.filters.length; i < l; i++) {
					this.filters[i - 1].connect(this.filters[i]);
				}

				this.filters[this.filters.length - 1].connect(this.getOutput());
			} else {
				this.source.connect(this.getOutput());
			}

			this._connected = true;
			return this;
		}

		disconnect() {
			if (this.filters.length > 0) {
				this.source.disconnect(this.filters[0]);

				for (let i = 1, l = this.filters.length; i < l; i++) {
					this.filters[i - 1].disconnect(this.filters[i]);
				}

				this.filters[this.filters.length - 1].disconnect(this.getOutput());
			} else {
				this.source.disconnect(this.getOutput());
			}

			this._connected = false;
			return this;
		}

		getFilters() {
			return this.filters;
		}

		setFilters(value) {
			if (!value) value = [];

			if (this._connected === true) {
				this.disconnect();
				this.filters = value.slice();
				this.connect();
			} else {
				this.filters = value.slice();
			}

			return this;
		}

		setDetune(value) {
			this.detune = value;
			if (this.source.detune === undefined) return; // only set detune when available

			if (this.isPlaying === true) {
				this.source.detune.setTargetAtTime(this.detune, this.context.currentTime, 0.01);
			}

			return this;
		}

		getDetune() {
			return this.detune;
		}

		getFilter() {
			return this.getFilters()[0];
		}

		setFilter(filter) {
			return this.setFilters(filter ? [filter] : []);
		}

		setPlaybackRate(value) {
			if (this.hasPlaybackControl === false) {
				console.warn('THREE.Audio: this Audio has no playback control.');
				return;
			}

			this.playbackRate = value;

			if (this.isPlaying === true) {
				this.source.playbackRate.setTargetAtTime(this.playbackRate, this.context.currentTime, 0.01);
			}

			return this;
		}

		getPlaybackRate() {
			return this.playbackRate;
		}

		onEnded() {
			this.isPlaying = false;
		}

		getLoop() {
			if (this.hasPlaybackControl === false) {
				console.warn('THREE.Audio: this Audio has no playback control.');
				return false;
			}

			return this.loop;
		}

		setLoop(value) {
			if (this.hasPlaybackControl === false) {
				console.warn('THREE.Audio: this Audio has no playback control.');
				return;
			}

			this.loop = value;

			if (this.isPlaying === true) {
				this.source.loop = this.loop;
			}

			return this;
		}

		setLoopStart(value) {
			this.loopStart = value;
			return this;
		}

		setLoopEnd(value) {
			this.loopEnd = value;
			return this;
		}

		getVolume() {
			return this.gain.gain.value;
		}

		setVolume(value) {
			this.gain.gain.setTargetAtTime(value, this.context.currentTime, 0.01);
			return this;
		}

	}

	const _position = /*@__PURE__*/new Vector3();

	const _quaternion = /*@__PURE__*/new Quaternion();

	const _scale = /*@__PURE__*/new Vector3();

	const _orientation = /*@__PURE__*/new Vector3();

	class PositionalAudio extends Audio {
		constructor(listener) {
			super(listener);
			this.panner = this.context.createPanner();
			this.panner.panningModel = 'HRTF';
			this.panner.connect(this.gain);
		}

		getOutput() {
			return this.panner;
		}

		getRefDistance() {
			return this.panner.refDistance;
		}

		setRefDistance(value) {
			this.panner.refDistance = value;
			return this;
		}

		getRolloffFactor() {
			return this.panner.rolloffFactor;
		}

		setRolloffFactor(value) {
			this.panner.rolloffFactor = value;
			return this;
		}

		getDistanceModel() {
			return this.panner.distanceModel;
		}

		setDistanceModel(value) {
			this.panner.distanceModel = value;
			return this;
		}

		getMaxDistance() {
			return this.panner.maxDistance;
		}

		setMaxDistance(value) {
			this.panner.maxDistance = value;
			return this;
		}

		setDirectionalCone(coneInnerAngle, coneOuterAngle, coneOuterGain) {
			this.panner.coneInnerAngle = coneInnerAngle;
			this.panner.coneOuterAngle = coneOuterAngle;
			this.panner.coneOuterGain = coneOuterGain;
			return this;
		}

		updateMatrixWorld(force) {
			super.updateMatrixWorld(force);
			if (this.hasPlaybackControl === true && this.isPlaying === false) return;
			this.matrixWorld.decompose(_position, _quaternion, _scale);

			_orientation.set(0, 0, 1).applyQuaternion(_quaternion);

			const panner = this.panner;

			if (panner.positionX) {
				// code path for Chrome and Firefox (see #14393)
				const endTime = this.context.currentTime + this.listener.timeDelta;
				panner.positionX.linearRampToValueAtTime(_position.x, endTime);
				panner.positionY.linearRampToValueAtTime(_position.y, endTime);
				panner.positionZ.linearRampToValueAtTime(_position.z, endTime);
				panner.orientationX.linearRampToValueAtTime(_orientation.x, endTime);
				panner.orientationY.linearRampToValueAtTime(_orientation.y, endTime);
				panner.orientationZ.linearRampToValueAtTime(_orientation.z, endTime);
			} else {
				panner.setPosition(_position.x, _position.y, _position.z);
				panner.setOrientation(_orientation.x, _orientation.y, _orientation.z);
			}
		}

	}

	class AudioAnalyser {
		constructor(audio, fftSize = 2048) {
			this.analyser = audio.context.createAnalyser();
			this.analyser.fftSize = fftSize;
			this.data = new Uint8Array(this.analyser.frequencyBinCount);
			audio.getOutput().connect(this.analyser);
		}

		getFrequencyData() {
			this.analyser.getByteFrequencyData(this.data);
			return this.data;
		}

		getAverageFrequency() {
			let value = 0;
			const data = this.getFrequencyData();

			for (let i = 0; i < data.length; i++) {
				value += data[i];
			}

			return value / data.length;
		}

	}

	class PropertyMixer {
		constructor(binding, typeName, valueSize) {
			this.binding = binding;
			this.valueSize = valueSize;
			let mixFunction, mixFunctionAdditive, setIdentity; // buffer layout: [ incoming | accu0 | accu1 | orig | addAccu | (optional work) ]
			//
			// interpolators can use .buffer as their .result
			// the data then goes to 'incoming'
			//
			// 'accu0' and 'accu1' are used frame-interleaved for
			// the cumulative result and are compared to detect
			// changes
			//
			// 'orig' stores the original state of the property
			//
			// 'add' is used for additive cumulative results
			//
			// 'work' is optional and is only present for quaternion types. It is used
			// to store intermediate quaternion multiplication results

			switch (typeName) {
				case 'quaternion':
					mixFunction = this._slerp;
					mixFunctionAdditive = this._slerpAdditive;
					setIdentity = this._setAdditiveIdentityQuaternion;
					this.buffer = new Float64Array(valueSize * 6);
					this._workIndex = 5;
					break;

				case 'string':
				case 'bool':
					mixFunction = this._select; // Use the regular mix function and for additive on these types,
					// additive is not relevant for non-numeric types

					mixFunctionAdditive = this._select;
					setIdentity = this._setAdditiveIdentityOther;
					this.buffer = new Array(valueSize * 5);
					break;

				default:
					mixFunction = this._lerp;
					mixFunctionAdditive = this._lerpAdditive;
					setIdentity = this._setAdditiveIdentityNumeric;
					this.buffer = new Float64Array(valueSize * 5);
			}

			this._mixBufferRegion = mixFunction;
			this._mixBufferRegionAdditive = mixFunctionAdditive;
			this._setIdentity = setIdentity;
			this._origIndex = 3;
			this._addIndex = 4;
			this.cumulativeWeight = 0;
			this.cumulativeWeightAdditive = 0;
			this.useCount = 0;
			this.referenceCount = 0;
		} // accumulate data in the 'incoming' region into 'accu<i>'


		accumulate(accuIndex, weight) {
			// note: happily accumulating nothing when weight = 0, the caller knows
			// the weight and shouldn't have made the call in the first place
			const buffer = this.buffer,
						stride = this.valueSize,
						offset = accuIndex * stride + stride;
			let currentWeight = this.cumulativeWeight;

			if (currentWeight === 0) {
				// accuN := incoming * weight
				for (let i = 0; i !== stride; ++i) {
					buffer[offset + i] = buffer[i];
				}

				currentWeight = weight;
			} else {
				// accuN := accuN + incoming * weight
				currentWeight += weight;
				const mix = weight / currentWeight;

				this._mixBufferRegion(buffer, offset, 0, mix, stride);
			}

			this.cumulativeWeight = currentWeight;
		} // accumulate data in the 'incoming' region into 'add'


		accumulateAdditive(weight) {
			const buffer = this.buffer,
						stride = this.valueSize,
						offset = stride * this._addIndex;

			if (this.cumulativeWeightAdditive === 0) {
				// add = identity
				this._setIdentity();
			} // add := add + incoming * weight


			this._mixBufferRegionAdditive(buffer, offset, 0, weight, stride);

			this.cumulativeWeightAdditive += weight;
		} // apply the state of 'accu<i>' to the binding when accus differ


		apply(accuIndex) {
			const stride = this.valueSize,
						buffer = this.buffer,
						offset = accuIndex * stride + stride,
						weight = this.cumulativeWeight,
						weightAdditive = this.cumulativeWeightAdditive,
						binding = this.binding;
			this.cumulativeWeight = 0;
			this.cumulativeWeightAdditive = 0;

			if (weight < 1) {
				// accuN := accuN + original * ( 1 - cumulativeWeight )
				const originalValueOffset = stride * this._origIndex;

				this._mixBufferRegion(buffer, offset, originalValueOffset, 1 - weight, stride);
			}

			if (weightAdditive > 0) {
				// accuN := accuN + additive accuN
				this._mixBufferRegionAdditive(buffer, offset, this._addIndex * stride, 1, stride);
			}

			for (let i = stride, e = stride + stride; i !== e; ++i) {
				if (buffer[i] !== buffer[i + stride]) {
					// value has changed -> update scene graph
					binding.setValue(buffer, offset);
					break;
				}
			}
		} // remember the state of the bound property and copy it to both accus


		saveOriginalState() {
			const binding = this.binding;
			const buffer = this.buffer,
						stride = this.valueSize,
						originalValueOffset = stride * this._origIndex;
			binding.getValue(buffer, originalValueOffset); // accu[0..1] := orig -- initially detect changes against the original

			for (let i = stride, e = originalValueOffset; i !== e; ++i) {
				buffer[i] = buffer[originalValueOffset + i % stride];
			} // Add to identity for additive


			this._setIdentity();

			this.cumulativeWeight = 0;
			this.cumulativeWeightAdditive = 0;
		} // apply the state previously taken via 'saveOriginalState' to the binding


		restoreOriginalState() {
			const originalValueOffset = this.valueSize * 3;
			this.binding.setValue(this.buffer, originalValueOffset);
		}

		_setAdditiveIdentityNumeric() {
			const startIndex = this._addIndex * this.valueSize;
			const endIndex = startIndex + this.valueSize;

			for (let i = startIndex; i < endIndex; i++) {
				this.buffer[i] = 0;
			}
		}

		_setAdditiveIdentityQuaternion() {
			this._setAdditiveIdentityNumeric();

			this.buffer[this._addIndex * this.valueSize + 3] = 1;
		}

		_setAdditiveIdentityOther() {
			const startIndex = this._origIndex * this.valueSize;
			const targetIndex = this._addIndex * this.valueSize;

			for (let i = 0; i < this.valueSize; i++) {
				this.buffer[targetIndex + i] = this.buffer[startIndex + i];
			}
		} // mix functions


		_select(buffer, dstOffset, srcOffset, t, stride) {
			if (t >= 0.5) {
				for (let i = 0; i !== stride; ++i) {
					buffer[dstOffset + i] = buffer[srcOffset + i];
				}
			}
		}

		_slerp(buffer, dstOffset, srcOffset, t) {
			Quaternion.slerpFlat(buffer, dstOffset, buffer, dstOffset, buffer, srcOffset, t);
		}

		_slerpAdditive(buffer, dstOffset, srcOffset, t, stride) {
			const workOffset = this._workIndex * stride; // Store result in intermediate buffer offset

			Quaternion.multiplyQuaternionsFlat(buffer, workOffset, buffer, dstOffset, buffer, srcOffset); // Slerp to the intermediate result

			Quaternion.slerpFlat(buffer, dstOffset, buffer, dstOffset, buffer, workOffset, t);
		}

		_lerp(buffer, dstOffset, srcOffset, t, stride) {
			const s = 1 - t;

			for (let i = 0; i !== stride; ++i) {
				const j = dstOffset + i;
				buffer[j] = buffer[j] * s + buffer[srcOffset + i] * t;
			}
		}

		_lerpAdditive(buffer, dstOffset, srcOffset, t, stride) {
			for (let i = 0; i !== stride; ++i) {
				const j = dstOffset + i;
				buffer[j] = buffer[j] + buffer[srcOffset + i] * t;
			}
		}

	}

	// Characters [].:/ are reserved for track binding syntax.
	const _RESERVED_CHARS_RE = '\\[\\]\\.:\\/';

	const _reservedRe = new RegExp('[' + _RESERVED_CHARS_RE + ']', 'g'); // Attempts to allow node names from any language. ES5's `\w` regexp matches
	// only latin characters, and the unicode \p{L} is not yet supported. So
	// instead, we exclude reserved characters and match everything else.


	const _wordChar = '[^' + _RESERVED_CHARS_RE + ']';

	const _wordCharOrDot = '[^' + _RESERVED_CHARS_RE.replace('\\.', '') + ']'; // Parent directories, delimited by '/' or ':'. Currently unused, but must
	// be matched to parse the rest of the track name.


	const _directoryRe = /((?:WC+[\/:])*)/.source.replace('WC', _wordChar); // Target node. May contain word characters (a-zA-Z0-9_) and '.' or '-'.


	const _nodeRe = /(WCOD+)?/.source.replace('WCOD', _wordCharOrDot); // Object on target node, and accessor. May not contain reserved
	// characters. Accessor may contain any character except closing bracket.


	const _objectRe = /(?:\.(WC+)(?:\[(.+)\])?)?/.source.replace('WC', _wordChar); // Property and accessor. May not contain reserved characters. Accessor may
	// contain any non-bracket characters.


	const _propertyRe = /\.(WC+)(?:\[(.+)\])?/.source.replace('WC', _wordChar);

	const _trackRe = new RegExp('' + '^' + _directoryRe + _nodeRe + _objectRe + _propertyRe + '$');

	const _supportedObjectNames = ['material', 'materials', 'bones'];

	class Composite {
		constructor(targetGroup, path, optionalParsedPath) {
			const parsedPath = optionalParsedPath || PropertyBinding.parseTrackName(path);
			this._targetGroup = targetGroup;
			this._bindings = targetGroup.subscribe_(path, parsedPath);
		}

		getValue(array, offset) {
			this.bind(); // bind all binding

			const firstValidIndex = this._targetGroup.nCachedObjects_,
						binding = this._bindings[firstValidIndex]; // and only call .getValue on the first

			if (binding !== undefined) binding.getValue(array, offset);
		}

		setValue(array, offset) {
			const bindings = this._bindings;

			for (let i = this._targetGroup.nCachedObjects_, n = bindings.length; i !== n; ++i) {
				bindings[i].setValue(array, offset);
			}
		}

		bind() {
			const bindings = this._bindings;

			for (let i = this._targetGroup.nCachedObjects_, n = bindings.length; i !== n; ++i) {
				bindings[i].bind();
			}
		}

		unbind() {
			const bindings = this._bindings;

			for (let i = this._targetGroup.nCachedObjects_, n = bindings.length; i !== n; ++i) {
				bindings[i].unbind();
			}
		}

	} // Note: This class uses a State pattern on a per-method basis:
	// 'bind' sets 'this.getValue' / 'setValue' and shadows the
	// prototype version of these methods with one that represents
	// the bound state. When the property is not found, the methods
	// become no-ops.


	class PropertyBinding {
		constructor(rootNode, path, parsedPath) {
			this.path = path;
			this.parsedPath = parsedPath || PropertyBinding.parseTrackName(path);
			this.node = PropertyBinding.findNode(rootNode, this.parsedPath.nodeName) || rootNode;
			this.rootNode = rootNode; // initial state of these methods that calls 'bind'

			this.getValue = this._getValue_unbound;
			this.setValue = this._setValue_unbound;
		}

		static create(root, path, parsedPath) {
			if (!(root && root.isAnimationObjectGroup)) {
				return new PropertyBinding(root, path, parsedPath);
			} else {
				return new PropertyBinding.Composite(root, path, parsedPath);
			}
		}
		/**
		 * Replaces spaces with underscores and removes unsupported characters from
		 * node names, to ensure compatibility with parseTrackName().
		 *
		 * @param {string} name Node name to be sanitized.
		 * @return {string}
		 */


		static sanitizeNodeName(name) {
			return name.replace(/\s/g, '_').replace(_reservedRe, '');
		}

		static parseTrackName(trackName) {
			const matches = _trackRe.exec(trackName);

			if (!matches) {
				throw new Error('PropertyBinding: Cannot parse trackName: ' + trackName);
			}

			const results = {
				// directoryName: matches[ 1 ], // (tschw) currently unused
				nodeName: matches[2],
				objectName: matches[3],
				objectIndex: matches[4],
				propertyName: matches[5],
				// required
				propertyIndex: matches[6]
			};
			const lastDot = results.nodeName && results.nodeName.lastIndexOf('.');

			if (lastDot !== undefined && lastDot !== -1) {
				const objectName = results.nodeName.substring(lastDot + 1); // Object names must be checked against an allowlist. Otherwise, there
				// is no way to parse 'foo.bar.baz': 'baz' must be a property, but
				// 'bar' could be the objectName, or part of a nodeName (which can
				// include '.' characters).

				if (_supportedObjectNames.indexOf(objectName) !== -1) {
					results.nodeName = results.nodeName.substring(0, lastDot);
					results.objectName = objectName;
				}
			}

			if (results.propertyName === null || results.propertyName.length === 0) {
				throw new Error('PropertyBinding: can not parse propertyName from trackName: ' + trackName);
			}

			return results;
		}

		static findNode(root, nodeName) {
			if (!nodeName || nodeName === '' || nodeName === '.' || nodeName === -1 || nodeName === root.name || nodeName === root.uuid) {
				return root;
			} // search into skeleton bones.


			if (root.skeleton) {
				const bone = root.skeleton.getBoneByName(nodeName);

				if (bone !== undefined) {
					return bone;
				}
			} // search into node subtree.


			if (root.children) {
				const searchNodeSubtree = function (children) {
					for (let i = 0; i < children.length; i++) {
						const childNode = children[i];

						if (childNode.name === nodeName || childNode.uuid === nodeName) {
							return childNode;
						}

						const result = searchNodeSubtree(childNode.children);
						if (result) return result;
					}

					return null;
				};

				const subTreeNode = searchNodeSubtree(root.children);

				if (subTreeNode) {
					return subTreeNode;
				}
			}

			return null;
		} // these are used to "bind" a nonexistent property


		_getValue_unavailable() {}

		_setValue_unavailable() {} // Getters


		_getValue_direct(buffer, offset) {
			buffer[offset] = this.targetObject[this.propertyName];
		}

		_getValue_array(buffer, offset) {
			const source = this.resolvedProperty;

			for (let i = 0, n = source.length; i !== n; ++i) {
				buffer[offset++] = source[i];
			}
		}

		_getValue_arrayElement(buffer, offset) {
			buffer[offset] = this.resolvedProperty[this.propertyIndex];
		}

		_getValue_toArray(buffer, offset) {
			this.resolvedProperty.toArray(buffer, offset);
		} // Direct


		_setValue_direct(buffer, offset) {
			this.targetObject[this.propertyName] = buffer[offset];
		}

		_setValue_direct_setNeedsUpdate(buffer, offset) {
			this.targetObject[this.propertyName] = buffer[offset];
			this.targetObject.needsUpdate = true;
		}

		_setValue_direct_setMatrixWorldNeedsUpdate(buffer, offset) {
			this.targetObject[this.propertyName] = buffer[offset];
			this.targetObject.matrixWorldNeedsUpdate = true;
		} // EntireArray


		_setValue_array(buffer, offset) {
			const dest = this.resolvedProperty;

			for (let i = 0, n = dest.length; i !== n; ++i) {
				dest[i] = buffer[offset++];
			}
		}

		_setValue_array_setNeedsUpdate(buffer, offset) {
			const dest = this.resolvedProperty;

			for (let i = 0, n = dest.length; i !== n; ++i) {
				dest[i] = buffer[offset++];
			}

			this.targetObject.needsUpdate = true;
		}

		_setValue_array_setMatrixWorldNeedsUpdate(buffer, offset) {
			const dest = this.resolvedProperty;

			for (let i = 0, n = dest.length; i !== n; ++i) {
				dest[i] = buffer[offset++];
			}

			this.targetObject.matrixWorldNeedsUpdate = true;
		} // ArrayElement


		_setValue_arrayElement(buffer, offset) {
			this.resolvedProperty[this.propertyIndex] = buffer[offset];
		}

		_setValue_arrayElement_setNeedsUpdate(buffer, offset) {
			this.resolvedProperty[this.propertyIndex] = buffer[offset];
			this.targetObject.needsUpdate = true;
		}

		_setValue_arrayElement_setMatrixWorldNeedsUpdate(buffer, offset) {
			this.resolvedProperty[this.propertyIndex] = buffer[offset];
			this.targetObject.matrixWorldNeedsUpdate = true;
		} // HasToFromArray


		_setValue_fromArray(buffer, offset) {
			this.resolvedProperty.fromArray(buffer, offset);
		}

		_setValue_fromArray_setNeedsUpdate(buffer, offset) {
			this.resolvedProperty.fromArray(buffer, offset);
			this.targetObject.needsUpdate = true;
		}

		_setValue_fromArray_setMatrixWorldNeedsUpdate(buffer, offset) {
			this.resolvedProperty.fromArray(buffer, offset);
			this.targetObject.matrixWorldNeedsUpdate = true;
		}

		_getValue_unbound(targetArray, offset) {
			this.bind();
			this.getValue(targetArray, offset);
		}

		_setValue_unbound(sourceArray, offset) {
			this.bind();
			this.setValue(sourceArray, offset);
		} // create getter / setter pair for a property in the scene graph


		bind() {
			let targetObject = this.node;
			const parsedPath = this.parsedPath;
			const objectName = parsedPath.objectName;
			const propertyName = parsedPath.propertyName;
			let propertyIndex = parsedPath.propertyIndex;

			if (!targetObject) {
				targetObject = PropertyBinding.findNode(this.rootNode, parsedPath.nodeName) || this.rootNode;
				this.node = targetObject;
			} // set fail state so we can just 'return' on error


			this.getValue = this._getValue_unavailable;
			this.setValue = this._setValue_unavailable; // ensure there is a value node

			if (!targetObject) {
				console.error('THREE.PropertyBinding: Trying to update node for track: ' + this.path + ' but it wasn\'t found.');
				return;
			}

			if (objectName) {
				let objectIndex = parsedPath.objectIndex; // special cases were we need to reach deeper into the hierarchy to get the face materials....

				switch (objectName) {
					case 'materials':
						if (!targetObject.material) {
							console.error('THREE.PropertyBinding: Can not bind to material as node does not have a material.', this);
							return;
						}

						if (!targetObject.material.materials) {
							console.error('THREE.PropertyBinding: Can not bind to material.materials as node.material does not have a materials array.', this);
							return;
						}

						targetObject = targetObject.material.materials;
						break;

					case 'bones':
						if (!targetObject.skeleton) {
							console.error('THREE.PropertyBinding: Can not bind to bones as node does not have a skeleton.', this);
							return;
						} // potential future optimization: skip this if propertyIndex is already an integer
						// and convert the integer string to a true integer.


						targetObject = targetObject.skeleton.bones; // support resolving morphTarget names into indices.

						for (let i = 0; i < targetObject.length; i++) {
							if (targetObject[i].name === objectIndex) {
								objectIndex = i;
								break;
							}
						}

						break;

					default:
						if (targetObject[objectName] === undefined) {
							console.error('THREE.PropertyBinding: Can not bind to objectName of node undefined.', this);
							return;
						}

						targetObject = targetObject[objectName];
				}

				if (objectIndex !== undefined) {
					if (targetObject[objectIndex] === undefined) {
						console.error('THREE.PropertyBinding: Trying to bind to objectIndex of objectName, but is undefined.', this, targetObject);
						return;
					}

					targetObject = targetObject[objectIndex];
				}
			} // resolve property


			const nodeProperty = targetObject[propertyName];

			if (nodeProperty === undefined) {
				const nodeName = parsedPath.nodeName;
				console.error('THREE.PropertyBinding: Trying to update property for track: ' + nodeName + '.' + propertyName + ' but it wasn\'t found.', targetObject);
				return;
			} // determine versioning scheme


			let versioning = this.Versioning.None;
			this.targetObject = targetObject;

			if (targetObject.needsUpdate !== undefined) {
				// material
				versioning = this.Versioning.NeedsUpdate;
			} else if (targetObject.matrixWorldNeedsUpdate !== undefined) {
				// node transform
				versioning = this.Versioning.MatrixWorldNeedsUpdate;
			} // determine how the property gets bound


			let bindingType = this.BindingType.Direct;

			if (propertyIndex !== undefined) {
				// access a sub element of the property array (only primitives are supported right now)
				if (propertyName === 'morphTargetInfluences') {
					// potential optimization, skip this if propertyIndex is already an integer, and convert the integer string to a true integer.
					// support resolving morphTarget names into indices.
					if (!targetObject.geometry) {
						console.error('THREE.PropertyBinding: Can not bind to morphTargetInfluences because node does not have a geometry.', this);
						return;
					}

					if (targetObject.geometry.isBufferGeometry) {
						if (!targetObject.geometry.morphAttributes) {
							console.error('THREE.PropertyBinding: Can not bind to morphTargetInfluences because node does not have a geometry.morphAttributes.', this);
							return;
						}

						if (targetObject.morphTargetDictionary[propertyIndex] !== undefined) {
							propertyIndex = targetObject.morphTargetDictionary[propertyIndex];
						}
					} else {
						console.error('THREE.PropertyBinding: Can not bind to morphTargetInfluences on THREE.Geometry. Use THREE.BufferGeometry instead.', this);
						return;
					}
				}

				bindingType = this.BindingType.ArrayElement;
				this.resolvedProperty = nodeProperty;
				this.propertyIndex = propertyIndex;
			} else if (nodeProperty.fromArray !== undefined && nodeProperty.toArray !== undefined) {
				// must use copy for Object3D.Euler/Quaternion
				bindingType = this.BindingType.HasFromToArray;
				this.resolvedProperty = nodeProperty;
			} else if (Array.isArray(nodeProperty)) {
				bindingType = this.BindingType.EntireArray;
				this.resolvedProperty = nodeProperty;
			} else {
				this.propertyName = propertyName;
			} // select getter / setter


			this.getValue = this.GetterByBindingType[bindingType];
			this.setValue = this.SetterByBindingTypeAndVersioning[bindingType][versioning];
		}

		unbind() {
			this.node = null; // back to the prototype version of getValue / setValue
			// note: avoiding to mutate the shape of 'this' via 'delete'

			this.getValue = this._getValue_unbound;
			this.setValue = this._setValue_unbound;
		}

	}

	PropertyBinding.Composite = Composite;
	PropertyBinding.prototype.BindingType = {
		Direct: 0,
		EntireArray: 1,
		ArrayElement: 2,
		HasFromToArray: 3
	};
	PropertyBinding.prototype.Versioning = {
		None: 0,
		NeedsUpdate: 1,
		MatrixWorldNeedsUpdate: 2
	};
	PropertyBinding.prototype.GetterByBindingType = [PropertyBinding.prototype._getValue_direct, PropertyBinding.prototype._getValue_array, PropertyBinding.prototype._getValue_arrayElement, PropertyBinding.prototype._getValue_toArray];
	PropertyBinding.prototype.SetterByBindingTypeAndVersioning = [[// Direct
	PropertyBinding.prototype._setValue_direct, PropertyBinding.prototype._setValue_direct_setNeedsUpdate, PropertyBinding.prototype._setValue_direct_setMatrixWorldNeedsUpdate], [// EntireArray
	PropertyBinding.prototype._setValue_array, PropertyBinding.prototype._setValue_array_setNeedsUpdate, PropertyBinding.prototype._setValue_array_setMatrixWorldNeedsUpdate], [// ArrayElement
	PropertyBinding.prototype._setValue_arrayElement, PropertyBinding.prototype._setValue_arrayElement_setNeedsUpdate, PropertyBinding.prototype._setValue_arrayElement_setMatrixWorldNeedsUpdate], [// HasToFromArray
	PropertyBinding.prototype._setValue_fromArray, PropertyBinding.prototype._setValue_fromArray_setNeedsUpdate, PropertyBinding.prototype._setValue_fromArray_setMatrixWorldNeedsUpdate]];

	/**
	 *
	 * A group of objects that receives a shared animation state.
	 *
	 * Usage:
	 *
	 *	- Add objects you would otherwise pass as 'root' to the
	 *		constructor or the .clipAction method of AnimationMixer.
	 *
	 *	- Instead pass this object as 'root'.
	 *
	 *	- You can also add and remove objects later when the mixer
	 *		is running.
	 *
	 * Note:
	 *
	 *		Objects of this class appear as one object to the mixer,
	 *		so cache control of the individual objects must be done
	 *		on the group.
	 *
	 * Limitation:
	 *
	 *	- The animated properties must be compatible among the
	 *		all objects in the group.
	 *
	 *	- A single property can either be controlled through a
	 *		target group or directly, but not both.
	 */

	class AnimationObjectGroup {
		constructor() {
			this.uuid = generateUUID(); // cached objects followed by the active ones

			this._objects = Array.prototype.slice.call(arguments);
			this.nCachedObjects_ = 0; // threshold
			// note: read by PropertyBinding.Composite

			const indices = {};
			this._indicesByUUID = indices; // for bookkeeping

			for (let i = 0, n = arguments.length; i !== n; ++i) {
				indices[arguments[i].uuid] = i;
			}

			this._paths = []; // inside: string

			this._parsedPaths = []; // inside: { we don't care, here }

			this._bindings = []; // inside: Array< PropertyBinding >

			this._bindingsIndicesByPath = {}; // inside: indices in these arrays

			const scope = this;
			this.stats = {
				objects: {
					get total() {
						return scope._objects.length;
					},

					get inUse() {
						return this.total - scope.nCachedObjects_;
					}

				},

				get bindingsPerObject() {
					return scope._bindings.length;
				}

			};
		}

		add() {
			const objects = this._objects,
						indicesByUUID = this._indicesByUUID,
						paths = this._paths,
						parsedPaths = this._parsedPaths,
						bindings = this._bindings,
						nBindings = bindings.length;
			let knownObject = undefined,
					nObjects = objects.length,
					nCachedObjects = this.nCachedObjects_;

			for (let i = 0, n = arguments.length; i !== n; ++i) {
				const object = arguments[i],
							uuid = object.uuid;
				let index = indicesByUUID[uuid];

				if (index === undefined) {
					// unknown object -> add it to the ACTIVE region
					index = nObjects++;
					indicesByUUID[uuid] = index;
					objects.push(object); // accounting is done, now do the same for all bindings

					for (let j = 0, m = nBindings; j !== m; ++j) {
						bindings[j].push(new PropertyBinding(object, paths[j], parsedPaths[j]));
					}
				} else if (index < nCachedObjects) {
					knownObject = objects[index]; // move existing object to the ACTIVE region

					const firstActiveIndex = --nCachedObjects,
								lastCachedObject = objects[firstActiveIndex];
					indicesByUUID[lastCachedObject.uuid] = index;
					objects[index] = lastCachedObject;
					indicesByUUID[uuid] = firstActiveIndex;
					objects[firstActiveIndex] = object; // accounting is done, now do the same for all bindings

					for (let j = 0, m = nBindings; j !== m; ++j) {
						const bindingsForPath = bindings[j],
									lastCached = bindingsForPath[firstActiveIndex];
						let binding = bindingsForPath[index];
						bindingsForPath[index] = lastCached;

						if (binding === undefined) {
							// since we do not bother to create new bindings
							// for objects that are cached, the binding may
							// or may not exist
							binding = new PropertyBinding(object, paths[j], parsedPaths[j]);
						}

						bindingsForPath[firstActiveIndex] = binding;
					}
				} else if (objects[index] !== knownObject) {
					console.error('THREE.AnimationObjectGroup: Different objects with the same UUID ' + 'detected. Clean the caches or recreate your infrastructure when reloading scenes.');
				} // else the object is already where we want it to be

			} // for arguments


			this.nCachedObjects_ = nCachedObjects;
		}

		remove() {
			const objects = this._objects,
						indicesByUUID = this._indicesByUUID,
						bindings = this._bindings,
						nBindings = bindings.length;
			let nCachedObjects = this.nCachedObjects_;

			for (let i = 0, n = arguments.length; i !== n; ++i) {
				const object = arguments[i],
							uuid = object.uuid,
							index = indicesByUUID[uuid];

				if (index !== undefined && index >= nCachedObjects) {
					// move existing object into the CACHED region
					const lastCachedIndex = nCachedObjects++,
								firstActiveObject = objects[lastCachedIndex];
					indicesByUUID[firstActiveObject.uuid] = index;
					objects[index] = firstActiveObject;
					indicesByUUID[uuid] = lastCachedIndex;
					objects[lastCachedIndex] = object; // accounting is done, now do the same for all bindings

					for (let j = 0, m = nBindings; j !== m; ++j) {
						const bindingsForPath = bindings[j],
									firstActive = bindingsForPath[lastCachedIndex],
									binding = bindingsForPath[index];
						bindingsForPath[index] = firstActive;
						bindingsForPath[lastCachedIndex] = binding;
					}
				}
			} // for arguments


			this.nCachedObjects_ = nCachedObjects;
		} // remove & forget


		uncache() {
			const objects = this._objects,
						indicesByUUID = this._indicesByUUID,
						bindings = this._bindings,
						nBindings = bindings.length;
			let nCachedObjects = this.nCachedObjects_,
					nObjects = objects.length;

			for (let i = 0, n = arguments.length; i !== n; ++i) {
				const object = arguments[i],
							uuid = object.uuid,
							index = indicesByUUID[uuid];

				if (index !== undefined) {
					delete indicesByUUID[uuid];

					if (index < nCachedObjects) {
						// object is cached, shrink the CACHED region
						const firstActiveIndex = --nCachedObjects,
									lastCachedObject = objects[firstActiveIndex],
									lastIndex = --nObjects,
									lastObject = objects[lastIndex]; // last cached object takes this object's place

						indicesByUUID[lastCachedObject.uuid] = index;
						objects[index] = lastCachedObject; // last object goes to the activated slot and pop

						indicesByUUID[lastObject.uuid] = firstActiveIndex;
						objects[firstActiveIndex] = lastObject;
						objects.pop(); // accounting is done, now do the same for all bindings

						for (let j = 0, m = nBindings; j !== m; ++j) {
							const bindingsForPath = bindings[j],
										lastCached = bindingsForPath[firstActiveIndex],
										last = bindingsForPath[lastIndex];
							bindingsForPath[index] = lastCached;
							bindingsForPath[firstActiveIndex] = last;
							bindingsForPath.pop();
						}
					} else {
						// object is active, just swap with the last and pop
						const lastIndex = --nObjects,
									lastObject = objects[lastIndex];

						if (lastIndex > 0) {
							indicesByUUID[lastObject.uuid] = index;
						}

						objects[index] = lastObject;
						objects.pop(); // accounting is done, now do the same for all bindings

						for (let j = 0, m = nBindings; j !== m; ++j) {
							const bindingsForPath = bindings[j];
							bindingsForPath[index] = bindingsForPath[lastIndex];
							bindingsForPath.pop();
						}
					} // cached or active

				} // if object is known

			} // for arguments


			this.nCachedObjects_ = nCachedObjects;
		} // Internal interface used by befriended PropertyBinding.Composite:


		subscribe_(path, parsedPath) {
			// returns an array of bindings for the given path that is changed
			// according to the contained objects in the group
			const indicesByPath = this._bindingsIndicesByPath;
			let index = indicesByPath[path];
			const bindings = this._bindings;
			if (index !== undefined) return bindings[index];
			const paths = this._paths,
						parsedPaths = this._parsedPaths,
						objects = this._objects,
						nObjects = objects.length,
						nCachedObjects = this.nCachedObjects_,
						bindingsForPath = new Array(nObjects);
			index = bindings.length;
			indicesByPath[path] = index;
			paths.push(path);
			parsedPaths.push(parsedPath);
			bindings.push(bindingsForPath);

			for (let i = nCachedObjects, n = objects.length; i !== n; ++i) {
				const object = objects[i];
				bindingsForPath[i] = new PropertyBinding(object, path, parsedPath);
			}

			return bindingsForPath;
		}

		unsubscribe_(path) {
			// tells the group to forget about a property path and no longer
			// update the array previously obtained with 'subscribe_'
			const indicesByPath = this._bindingsIndicesByPath,
						index = indicesByPath[path];

			if (index !== undefined) {
				const paths = this._paths,
							parsedPaths = this._parsedPaths,
							bindings = this._bindings,
							lastBindingsIndex = bindings.length - 1,
							lastBindings = bindings[lastBindingsIndex],
							lastBindingsPath = path[lastBindingsIndex];
				indicesByPath[lastBindingsPath] = index;
				bindings[index] = lastBindings;
				bindings.pop();
				parsedPaths[index] = parsedPaths[lastBindingsIndex];
				parsedPaths.pop();
				paths[index] = paths[lastBindingsIndex];
				paths.pop();
			}
		}

	}

	AnimationObjectGroup.prototype.isAnimationObjectGroup = true;

	class AnimationAction {
		constructor(mixer, clip, localRoot = null, blendMode = clip.blendMode) {
			this._mixer = mixer;
			this._clip = clip;
			this._localRoot = localRoot;
			this.blendMode = blendMode;
			const tracks = clip.tracks,
						nTracks = tracks.length,
						interpolants = new Array(nTracks);
			const interpolantSettings = {
				endingStart: ZeroCurvatureEnding,
				endingEnd: ZeroCurvatureEnding
			};

			for (let i = 0; i !== nTracks; ++i) {
				const interpolant = tracks[i].createInterpolant(null);
				interpolants[i] = interpolant;
				interpolant.settings = interpolantSettings;
			}

			this._interpolantSettings = interpolantSettings;
			this._interpolants = interpolants; // bound by the mixer
			// inside: PropertyMixer (managed by the mixer)

			this._propertyBindings = new Array(nTracks);
			this._cacheIndex = null; // for the memory manager

			this._byClipCacheIndex = null; // for the memory manager

			this._timeScaleInterpolant = null;
			this._weightInterpolant = null;
			this.loop = LoopRepeat;
			this._loopCount = -1; // global mixer time when the action is to be started
			// it's set back to 'null' upon start of the action

			this._startTime = null; // scaled local time of the action
			// gets clamped or wrapped to 0..clip.duration according to loop

			this.time = 0;
			this.timeScale = 1;
			this._effectiveTimeScale = 1;
			this.weight = 1;
			this._effectiveWeight = 1;
			this.repetitions = Infinity; // no. of repetitions when looping

			this.paused = false; // true -> zero effective time scale

			this.enabled = true; // false -> zero effective weight

			this.clampWhenFinished = false; // keep feeding the last frame?

			this.zeroSlopeAtStart = true; // for smooth interpolation w/o separate

			this.zeroSlopeAtEnd = true; // clips for start, loop and end
		} // State & Scheduling


		play() {
			this._mixer._activateAction(this);

			return this;
		}

		stop() {
			this._mixer._deactivateAction(this);

			return this.reset();
		}

		reset() {
			this.paused = false;
			this.enabled = true;
			this.time = 0; // restart clip

			this._loopCount = -1; // forget previous loops

			this._startTime = null; // forget scheduling

			return this.stopFading().stopWarping();
		}

		isRunning() {
			return this.enabled && !this.paused && this.timeScale !== 0 && this._startTime === null && this._mixer._isActiveAction(this);
		} // return true when play has been called


		isScheduled() {
			return this._mixer._isActiveAction(this);
		}

		startAt(time) {
			this._startTime = time;
			return this;
		}

		setLoop(mode, repetitions) {
			this.loop = mode;
			this.repetitions = repetitions;
			return this;
		} // Weight
		// set the weight stopping any scheduled fading
		// although .enabled = false yields an effective weight of zero, this
		// method does *not* change .enabled, because it would be confusing


		setEffectiveWeight(weight) {
			this.weight = weight; // note: same logic as when updated at runtime

			this._effectiveWeight = this.enabled ? weight : 0;
			return this.stopFading();
		} // return the weight considering fading and .enabled


		getEffectiveWeight() {
			return this._effectiveWeight;
		}

		fadeIn(duration) {
			return this._scheduleFading(duration, 0, 1);
		}

		fadeOut(duration) {
			return this._scheduleFading(duration, 1, 0);
		}

		crossFadeFrom(fadeOutAction, duration, warp) {
			fadeOutAction.fadeOut(duration);
			this.fadeIn(duration);

			if (warp) {
				const fadeInDuration = this._clip.duration,
							fadeOutDuration = fadeOutAction._clip.duration,
							startEndRatio = fadeOutDuration / fadeInDuration,
							endStartRatio = fadeInDuration / fadeOutDuration;
				fadeOutAction.warp(1.0, startEndRatio, duration);
				this.warp(endStartRatio, 1.0, duration);
			}

			return this;
		}

		crossFadeTo(fadeInAction, duration, warp) {
			return fadeInAction.crossFadeFrom(this, duration, warp);
		}

		stopFading() {
			const weightInterpolant = this._weightInterpolant;

			if (weightInterpolant !== null) {
				this._weightInterpolant = null;

				this._mixer._takeBackControlInterpolant(weightInterpolant);
			}

			return this;
		} // Time Scale Control
		// set the time scale stopping any scheduled warping
		// although .paused = true yields an effective time scale of zero, this
		// method does *not* change .paused, because it would be confusing


		setEffectiveTimeScale(timeScale) {
			this.timeScale = timeScale;
			this._effectiveTimeScale = this.paused ? 0 : timeScale;
			return this.stopWarping();
		} // return the time scale considering warping and .paused


		getEffectiveTimeScale() {
			return this._effectiveTimeScale;
		}

		setDuration(duration) {
			this.timeScale = this._clip.duration / duration;
			return this.stopWarping();
		}

		syncWith(action) {
			this.time = action.time;
			this.timeScale = action.timeScale;
			return this.stopWarping();
		}

		halt(duration) {
			return this.warp(this._effectiveTimeScale, 0, duration);
		}

		warp(startTimeScale, endTimeScale, duration) {
			const mixer = this._mixer,
						now = mixer.time,
						timeScale = this.timeScale;
			let interpolant = this._timeScaleInterpolant;

			if (interpolant === null) {
				interpolant = mixer._lendControlInterpolant();
				this._timeScaleInterpolant = interpolant;
			}

			const times = interpolant.parameterPositions,
						values = interpolant.sampleValues;
			times[0] = now;
			times[1] = now + duration;
			values[0] = startTimeScale / timeScale;
			values[1] = endTimeScale / timeScale;
			return this;
		}

		stopWarping() {
			const timeScaleInterpolant = this._timeScaleInterpolant;

			if (timeScaleInterpolant !== null) {
				this._timeScaleInterpolant = null;

				this._mixer._takeBackControlInterpolant(timeScaleInterpolant);
			}

			return this;
		} // Object Accessors


		getMixer() {
			return this._mixer;
		}

		getClip() {
			return this._clip;
		}

		getRoot() {
			return this._localRoot || this._mixer._root;
		} // Interna


		_update(time, deltaTime, timeDirection, accuIndex) {
			// called by the mixer
			if (!this.enabled) {
				// call ._updateWeight() to update ._effectiveWeight
				this._updateWeight(time);

				return;
			}

			const startTime = this._startTime;

			if (startTime !== null) {
				// check for scheduled start of action
				const timeRunning = (time - startTime) * timeDirection;

				if (timeRunning < 0 || timeDirection === 0) {
					return; // yet to come / don't decide when delta = 0
				} // start


				this._startTime = null; // unschedule

				deltaTime = timeDirection * timeRunning;
			} // apply time scale and advance time


			deltaTime *= this._updateTimeScale(time);

			const clipTime = this._updateTime(deltaTime); // note: _updateTime may disable the action resulting in
			// an effective weight of 0


			const weight = this._updateWeight(time);

			if (weight > 0) {
				const interpolants = this._interpolants;
				const propertyMixers = this._propertyBindings;

				switch (this.blendMode) {
					case AdditiveAnimationBlendMode:
						for (let j = 0, m = interpolants.length; j !== m; ++j) {
							interpolants[j].evaluate(clipTime);
							propertyMixers[j].accumulateAdditive(weight);
						}

						break;

					case NormalAnimationBlendMode:
					default:
						for (let j = 0, m = interpolants.length; j !== m; ++j) {
							interpolants[j].evaluate(clipTime);
							propertyMixers[j].accumulate(accuIndex, weight);
						}

				}
			}
		}

		_updateWeight(time) {
			let weight = 0;

			if (this.enabled) {
				weight = this.weight;
				const interpolant = this._weightInterpolant;

				if (interpolant !== null) {
					const interpolantValue = interpolant.evaluate(time)[0];
					weight *= interpolantValue;

					if (time > interpolant.parameterPositions[1]) {
						this.stopFading();

						if (interpolantValue === 0) {
							// faded out, disable
							this.enabled = false;
						}
					}
				}
			}

			this._effectiveWeight = weight;
			return weight;
		}

		_updateTimeScale(time) {
			let timeScale = 0;

			if (!this.paused) {
				timeScale = this.timeScale;
				const interpolant = this._timeScaleInterpolant;

				if (interpolant !== null) {
					const interpolantValue = interpolant.evaluate(time)[0];
					timeScale *= interpolantValue;

					if (time > interpolant.parameterPositions[1]) {
						this.stopWarping();

						if (timeScale === 0) {
							// motion has halted, pause
							this.paused = true;
						} else {
							// warp done - apply final time scale
							this.timeScale = timeScale;
						}
					}
				}
			}

			this._effectiveTimeScale = timeScale;
			return timeScale;
		}

		_updateTime(deltaTime) {
			const duration = this._clip.duration;
			const loop = this.loop;
			let time = this.time + deltaTime;
			let loopCount = this._loopCount;
			const pingPong = loop === LoopPingPong;

			if (deltaTime === 0) {
				if (loopCount === -1) return time;
				return pingPong && (loopCount & 1) === 1 ? duration - time : time;
			}

			if (loop === LoopOnce) {
				if (loopCount === -1) {
					// just started
					this._loopCount = 0;

					this._setEndings(true, true, false);
				}

				handle_stop: {
					if (time >= duration) {
						time = duration;
					} else if (time < 0) {
						time = 0;
					} else {
						this.time = time;
						break handle_stop;
					}

					if (this.clampWhenFinished) this.paused = true;else this.enabled = false;
					this.time = time;

					this._mixer.dispatchEvent({
						type: 'finished',
						action: this,
						direction: deltaTime < 0 ? -1 : 1
					});
				}
			} else {
				// repetitive Repeat or PingPong
				if (loopCount === -1) {
					// just started
					if (deltaTime >= 0) {
						loopCount = 0;

						this._setEndings(true, this.repetitions === 0, pingPong);
					} else {
						// when looping in reverse direction, the initial
						// transition through zero counts as a repetition,
						// so leave loopCount at -1
						this._setEndings(this.repetitions === 0, true, pingPong);
					}
				}

				if (time >= duration || time < 0) {
					// wrap around
					const loopDelta = Math.floor(time / duration); // signed

					time -= duration * loopDelta;
					loopCount += Math.abs(loopDelta);
					const pending = this.repetitions - loopCount;

					if (pending <= 0) {
						// have to stop (switch state, clamp time, fire event)
						if (this.clampWhenFinished) this.paused = true;else this.enabled = false;
						time = deltaTime > 0 ? duration : 0;
						this.time = time;

						this._mixer.dispatchEvent({
							type: 'finished',
							action: this,
							direction: deltaTime > 0 ? 1 : -1
						});
					} else {
						// keep running
						if (pending === 1) {
							// entering the last round
							const atStart = deltaTime < 0;

							this._setEndings(atStart, !atStart, pingPong);
						} else {
							this._setEndings(false, false, pingPong);
						}

						this._loopCount = loopCount;
						this.time = time;

						this._mixer.dispatchEvent({
							type: 'loop',
							action: this,
							loopDelta: loopDelta
						});
					}
				} else {
					this.time = time;
				}

				if (pingPong && (loopCount & 1) === 1) {
					// invert time for the "pong round"
					return duration - time;
				}
			}

			return time;
		}

		_setEndings(atStart, atEnd, pingPong) {
			const settings = this._interpolantSettings;

			if (pingPong) {
				settings.endingStart = ZeroSlopeEnding;
				settings.endingEnd = ZeroSlopeEnding;
			} else {
				// assuming for LoopOnce atStart == atEnd == true
				if (atStart) {
					settings.endingStart = this.zeroSlopeAtStart ? ZeroSlopeEnding : ZeroCurvatureEnding;
				} else {
					settings.endingStart = WrapAroundEnding;
				}

				if (atEnd) {
					settings.endingEnd = this.zeroSlopeAtEnd ? ZeroSlopeEnding : ZeroCurvatureEnding;
				} else {
					settings.endingEnd = WrapAroundEnding;
				}
			}
		}

		_scheduleFading(duration, weightNow, weightThen) {
			const mixer = this._mixer,
						now = mixer.time;
			let interpolant = this._weightInterpolant;

			if (interpolant === null) {
				interpolant = mixer._lendControlInterpolant();
				this._weightInterpolant = interpolant;
			}

			const times = interpolant.parameterPositions,
						values = interpolant.sampleValues;
			times[0] = now;
			values[0] = weightNow;
			times[1] = now + duration;
			values[1] = weightThen;
			return this;
		}

	}

	class AnimationMixer extends EventDispatcher {
		constructor(root) {
			super();
			this._root = root;

			this._initMemoryManager();

			this._accuIndex = 0;
			this.time = 0;
			this.timeScale = 1.0;
		}

		_bindAction(action, prototypeAction) {
			const root = action._localRoot || this._root,
						tracks = action._clip.tracks,
						nTracks = tracks.length,
						bindings = action._propertyBindings,
						interpolants = action._interpolants,
						rootUuid = root.uuid,
						bindingsByRoot = this._bindingsByRootAndName;
			let bindingsByName = bindingsByRoot[rootUuid];

			if (bindingsByName === undefined) {
				bindingsByName = {};
				bindingsByRoot[rootUuid] = bindingsByName;
			}

			for (let i = 0; i !== nTracks; ++i) {
				const track = tracks[i],
							trackName = track.name;
				let binding = bindingsByName[trackName];

				if (binding !== undefined) {
					bindings[i] = binding;
				} else {
					binding = bindings[i];

					if (binding !== undefined) {
						// existing binding, make sure the cache knows
						if (binding._cacheIndex === null) {
							++binding.referenceCount;

							this._addInactiveBinding(binding, rootUuid, trackName);
						}

						continue;
					}

					const path = prototypeAction && prototypeAction._propertyBindings[i].binding.parsedPath;
					binding = new PropertyMixer(PropertyBinding.create(root, trackName, path), track.ValueTypeName, track.getValueSize());
					++binding.referenceCount;

					this._addInactiveBinding(binding, rootUuid, trackName);

					bindings[i] = binding;
				}

				interpolants[i].resultBuffer = binding.buffer;
			}
		}

		_activateAction(action) {
			if (!this._isActiveAction(action)) {
				if (action._cacheIndex === null) {
					// this action has been forgotten by the cache, but the user
					// appears to be still using it -> rebind
					const rootUuid = (action._localRoot || this._root).uuid,
								clipUuid = action._clip.uuid,
								actionsForClip = this._actionsByClip[clipUuid];

					this._bindAction(action, actionsForClip && actionsForClip.knownActions[0]);

					this._addInactiveAction(action, clipUuid, rootUuid);
				}

				const bindings = action._propertyBindings; // increment reference counts / sort out state

				for (let i = 0, n = bindings.length; i !== n; ++i) {
					const binding = bindings[i];

					if (binding.useCount++ === 0) {
						this._lendBinding(binding);

						binding.saveOriginalState();
					}
				}

				this._lendAction(action);
			}
		}

		_deactivateAction(action) {
			if (this._isActiveAction(action)) {
				const bindings = action._propertyBindings; // decrement reference counts / sort out state

				for (let i = 0, n = bindings.length; i !== n; ++i) {
					const binding = bindings[i];

					if (--binding.useCount === 0) {
						binding.restoreOriginalState();

						this._takeBackBinding(binding);
					}
				}

				this._takeBackAction(action);
			}
		} // Memory manager


		_initMemoryManager() {
			this._actions = []; // 'nActiveActions' followed by inactive ones

			this._nActiveActions = 0;
			this._actionsByClip = {}; // inside:
			// {
			// 	knownActions: Array< AnimationAction > - used as prototypes
			// 	actionByRoot: AnimationAction - lookup
			// }

			this._bindings = []; // 'nActiveBindings' followed by inactive ones

			this._nActiveBindings = 0;
			this._bindingsByRootAndName = {}; // inside: Map< name, PropertyMixer >

			this._controlInterpolants = []; // same game as above

			this._nActiveControlInterpolants = 0;
			const scope = this;
			this.stats = {
				actions: {
					get total() {
						return scope._actions.length;
					},

					get inUse() {
						return scope._nActiveActions;
					}

				},
				bindings: {
					get total() {
						return scope._bindings.length;
					},

					get inUse() {
						return scope._nActiveBindings;
					}

				},
				controlInterpolants: {
					get total() {
						return scope._controlInterpolants.length;
					},

					get inUse() {
						return scope._nActiveControlInterpolants;
					}

				}
			};
		} // Memory management for AnimationAction objects


		_isActiveAction(action) {
			const index = action._cacheIndex;
			return index !== null && index < this._nActiveActions;
		}

		_addInactiveAction(action, clipUuid, rootUuid) {
			const actions = this._actions,
						actionsByClip = this._actionsByClip;
			let actionsForClip = actionsByClip[clipUuid];

			if (actionsForClip === undefined) {
				actionsForClip = {
					knownActions: [action],
					actionByRoot: {}
				};
				action._byClipCacheIndex = 0;
				actionsByClip[clipUuid] = actionsForClip;
			} else {
				const knownActions = actionsForClip.knownActions;
				action._byClipCacheIndex = knownActions.length;
				knownActions.push(action);
			}

			action._cacheIndex = actions.length;
			actions.push(action);
			actionsForClip.actionByRoot[rootUuid] = action;
		}

		_removeInactiveAction(action) {
			const actions = this._actions,
						lastInactiveAction = actions[actions.length - 1],
						cacheIndex = action._cacheIndex;
			lastInactiveAction._cacheIndex = cacheIndex;
			actions[cacheIndex] = lastInactiveAction;
			actions.pop();
			action._cacheIndex = null;
			const clipUuid = action._clip.uuid,
						actionsByClip = this._actionsByClip,
						actionsForClip = actionsByClip[clipUuid],
						knownActionsForClip = actionsForClip.knownActions,
						lastKnownAction = knownActionsForClip[knownActionsForClip.length - 1],
						byClipCacheIndex = action._byClipCacheIndex;
			lastKnownAction._byClipCacheIndex = byClipCacheIndex;
			knownActionsForClip[byClipCacheIndex] = lastKnownAction;
			knownActionsForClip.pop();
			action._byClipCacheIndex = null;
			const actionByRoot = actionsForClip.actionByRoot,
						rootUuid = (action._localRoot || this._root).uuid;
			delete actionByRoot[rootUuid];

			if (knownActionsForClip.length === 0) {
				delete actionsByClip[clipUuid];
			}

			this._removeInactiveBindingsForAction(action);
		}

		_removeInactiveBindingsForAction(action) {
			const bindings = action._propertyBindings;

			for (let i = 0, n = bindings.length; i !== n; ++i) {
				const binding = bindings[i];

				if (--binding.referenceCount === 0) {
					this._removeInactiveBinding(binding);
				}
			}
		}

		_lendAction(action) {
			// [ active actions |	inactive actions	]
			// [	active actions >| inactive actions ]
			//								 s				a
			//									<-swap->
			//								 a				s
			const actions = this._actions,
						prevIndex = action._cacheIndex,
						lastActiveIndex = this._nActiveActions++,
						firstInactiveAction = actions[lastActiveIndex];
			action._cacheIndex = lastActiveIndex;
			actions[lastActiveIndex] = action;
			firstInactiveAction._cacheIndex = prevIndex;
			actions[prevIndex] = firstInactiveAction;
		}

		_takeBackAction(action) {
			// [	active actions	| inactive actions ]
			// [ active actions |< inactive actions	]
			//				a				s
			//				 <-swap->
			//				s				a
			const actions = this._actions,
						prevIndex = action._cacheIndex,
						firstInactiveIndex = --this._nActiveActions,
						lastActiveAction = actions[firstInactiveIndex];
			action._cacheIndex = firstInactiveIndex;
			actions[firstInactiveIndex] = action;
			lastActiveAction._cacheIndex = prevIndex;
			actions[prevIndex] = lastActiveAction;
		} // Memory management for PropertyMixer objects


		_addInactiveBinding(binding, rootUuid, trackName) {
			const bindingsByRoot = this._bindingsByRootAndName,
						bindings = this._bindings;
			let bindingByName = bindingsByRoot[rootUuid];

			if (bindingByName === undefined) {
				bindingByName = {};
				bindingsByRoot[rootUuid] = bindingByName;
			}

			bindingByName[trackName] = binding;
			binding._cacheIndex = bindings.length;
			bindings.push(binding);
		}

		_removeInactiveBinding(binding) {
			const bindings = this._bindings,
						propBinding = binding.binding,
						rootUuid = propBinding.rootNode.uuid,
						trackName = propBinding.path,
						bindingsByRoot = this._bindingsByRootAndName,
						bindingByName = bindingsByRoot[rootUuid],
						lastInactiveBinding = bindings[bindings.length - 1],
						cacheIndex = binding._cacheIndex;
			lastInactiveBinding._cacheIndex = cacheIndex;
			bindings[cacheIndex] = lastInactiveBinding;
			bindings.pop();
			delete bindingByName[trackName];

			if (Object.keys(bindingByName).length === 0) {
				delete bindingsByRoot[rootUuid];
			}
		}

		_lendBinding(binding) {
			const bindings = this._bindings,
						prevIndex = binding._cacheIndex,
						lastActiveIndex = this._nActiveBindings++,
						firstInactiveBinding = bindings[lastActiveIndex];
			binding._cacheIndex = lastActiveIndex;
			bindings[lastActiveIndex] = binding;
			firstInactiveBinding._cacheIndex = prevIndex;
			bindings[prevIndex] = firstInactiveBinding;
		}

		_takeBackBinding(binding) {
			const bindings = this._bindings,
						prevIndex = binding._cacheIndex,
						firstInactiveIndex = --this._nActiveBindings,
						lastActiveBinding = bindings[firstInactiveIndex];
			binding._cacheIndex = firstInactiveIndex;
			bindings[firstInactiveIndex] = binding;
			lastActiveBinding._cacheIndex = prevIndex;
			bindings[prevIndex] = lastActiveBinding;
		} // Memory management of Interpolants for weight and time scale


		_lendControlInterpolant() {
			const interpolants = this._controlInterpolants,
						lastActiveIndex = this._nActiveControlInterpolants++;
			let interpolant = interpolants[lastActiveIndex];

			if (interpolant === undefined) {
				interpolant = new LinearInterpolant(new Float32Array(2), new Float32Array(2), 1, this._controlInterpolantsResultBuffer);
				interpolant.__cacheIndex = lastActiveIndex;
				interpolants[lastActiveIndex] = interpolant;
			}

			return interpolant;
		}

		_takeBackControlInterpolant(interpolant) {
			const interpolants = this._controlInterpolants,
						prevIndex = interpolant.__cacheIndex,
						firstInactiveIndex = --this._nActiveControlInterpolants,
						lastActiveInterpolant = interpolants[firstInactiveIndex];
			interpolant.__cacheIndex = firstInactiveIndex;
			interpolants[firstInactiveIndex] = interpolant;
			lastActiveInterpolant.__cacheIndex = prevIndex;
			interpolants[prevIndex] = lastActiveInterpolant;
		} // return an action for a clip optionally using a custom root target
		// object (this method allocates a lot of dynamic memory in case a
		// previously unknown clip/root combination is specified)


		clipAction(clip, optionalRoot, blendMode) {
			const root = optionalRoot || this._root,
						rootUuid = root.uuid;
			let clipObject = typeof clip === 'string' ? AnimationClip.findByName(root, clip) : clip;
			const clipUuid = clipObject !== null ? clipObject.uuid : clip;
			const actionsForClip = this._actionsByClip[clipUuid];
			let prototypeAction = null;

			if (blendMode === undefined) {
				if (clipObject !== null) {
					blendMode = clipObject.blendMode;
				} else {
					blendMode = NormalAnimationBlendMode;
				}
			}

			if (actionsForClip !== undefined) {
				const existingAction = actionsForClip.actionByRoot[rootUuid];

				if (existingAction !== undefined && existingAction.blendMode === blendMode) {
					return existingAction;
				} // we know the clip, so we don't have to parse all
				// the bindings again but can just copy


				prototypeAction = actionsForClip.knownActions[0]; // also, take the clip from the prototype action

				if (clipObject === null) clipObject = prototypeAction._clip;
			} // clip must be known when specified via string


			if (clipObject === null) return null; // allocate all resources required to run it

			const newAction = new AnimationAction(this, clipObject, optionalRoot, blendMode);

			this._bindAction(newAction, prototypeAction); // and make the action known to the memory manager


			this._addInactiveAction(newAction, clipUuid, rootUuid);

			return newAction;
		} // get an existing action


		existingAction(clip, optionalRoot) {
			const root = optionalRoot || this._root,
						rootUuid = root.uuid,
						clipObject = typeof clip === 'string' ? AnimationClip.findByName(root, clip) : clip,
						clipUuid = clipObject ? clipObject.uuid : clip,
						actionsForClip = this._actionsByClip[clipUuid];

			if (actionsForClip !== undefined) {
				return actionsForClip.actionByRoot[rootUuid] || null;
			}

			return null;
		} // deactivates all previously scheduled actions


		stopAllAction() {
			const actions = this._actions,
						nActions = this._nActiveActions;

			for (let i = nActions - 1; i >= 0; --i) {
				actions[i].stop();
			}

			return this;
		} // advance the time and update apply the animation


		update(deltaTime) {
			deltaTime *= this.timeScale;
			const actions = this._actions,
						nActions = this._nActiveActions,
						time = this.time += deltaTime,
						timeDirection = Math.sign(deltaTime),
						accuIndex = this._accuIndex ^= 1; // run active actions

			for (let i = 0; i !== nActions; ++i) {
				const action = actions[i];

				action._update(time, deltaTime, timeDirection, accuIndex);
			} // update scene graph


			const bindings = this._bindings,
						nBindings = this._nActiveBindings;

			for (let i = 0; i !== nBindings; ++i) {
				bindings[i].apply(accuIndex);
			}

			return this;
		} // Allows you to seek to a specific time in an animation.


		setTime(timeInSeconds) {
			this.time = 0; // Zero out time attribute for AnimationMixer object;

			for (let i = 0; i < this._actions.length; i++) {
				this._actions[i].time = 0; // Zero out time attribute for all associated AnimationAction objects.
			}

			return this.update(timeInSeconds); // Update used to set exact time. Returns "this" AnimationMixer object.
		} // return this mixer's root target object


		getRoot() {
			return this._root;
		} // free all resources specific to a particular clip


		uncacheClip(clip) {
			const actions = this._actions,
						clipUuid = clip.uuid,
						actionsByClip = this._actionsByClip,
						actionsForClip = actionsByClip[clipUuid];

			if (actionsForClip !== undefined) {
				// note: just calling _removeInactiveAction would mess up the
				// iteration state and also require updating the state we can
				// just throw away
				const actionsToRemove = actionsForClip.knownActions;

				for (let i = 0, n = actionsToRemove.length; i !== n; ++i) {
					const action = actionsToRemove[i];

					this._deactivateAction(action);

					const cacheIndex = action._cacheIndex,
								lastInactiveAction = actions[actions.length - 1];
					action._cacheIndex = null;
					action._byClipCacheIndex = null;
					lastInactiveAction._cacheIndex = cacheIndex;
					actions[cacheIndex] = lastInactiveAction;
					actions.pop();

					this._removeInactiveBindingsForAction(action);
				}

				delete actionsByClip[clipUuid];
			}
		} // free all resources specific to a particular root target object


		uncacheRoot(root) {
			const rootUuid = root.uuid,
						actionsByClip = this._actionsByClip;

			for (const clipUuid in actionsByClip) {
				const actionByRoot = actionsByClip[clipUuid].actionByRoot,
							action = actionByRoot[rootUuid];

				if (action !== undefined) {
					this._deactivateAction(action);

					this._removeInactiveAction(action);
				}
			}

			const bindingsByRoot = this._bindingsByRootAndName,
						bindingByName = bindingsByRoot[rootUuid];

			if (bindingByName !== undefined) {
				for (const trackName in bindingByName) {
					const binding = bindingByName[trackName];
					binding.restoreOriginalState();

					this._removeInactiveBinding(binding);
				}
			}
		} // remove a targeted clip from the cache


		uncacheAction(clip, optionalRoot) {
			const action = this.existingAction(clip, optionalRoot);

			if (action !== null) {
				this._deactivateAction(action);

				this._removeInactiveAction(action);
			}
		}

	}

	AnimationMixer.prototype._controlInterpolantsResultBuffer = new Float32Array(1);

	class Uniform {
		constructor(value) {
			if (typeof value === 'string') {
				console.warn('THREE.Uniform: Type parameter is no longer needed.');
				value = arguments[1];
			}

			this.value = value;
		}

		clone() {
			return new Uniform(this.value.clone === undefined ? this.value : this.value.clone());
		}

	}

	class InstancedInterleavedBuffer extends InterleavedBuffer {
		constructor(array, stride, meshPerAttribute = 1) {
			super(array, stride);
			this.meshPerAttribute = meshPerAttribute;
		}

		copy(source) {
			super.copy(source);
			this.meshPerAttribute = source.meshPerAttribute;
			return this;
		}

		clone(data) {
			const ib = super.clone(data);
			ib.meshPerAttribute = this.meshPerAttribute;
			return ib;
		}

		toJSON(data) {
			const json = super.toJSON(data);
			json.isInstancedInterleavedBuffer = true;
			json.meshPerAttribute = this.meshPerAttribute;
			return json;
		}

	}

	InstancedInterleavedBuffer.prototype.isInstancedInterleavedBuffer = true;

	class GLBufferAttribute {
		constructor(buffer, type, itemSize, elementSize, count) {
			this.buffer = buffer;
			this.type = type;
			this.itemSize = itemSize;
			this.elementSize = elementSize;
			this.count = count;
			this.version = 0;
		}

		set needsUpdate(value) {
			if (value === true) this.version++;
		}

		setBuffer(buffer) {
			this.buffer = buffer;
			return this;
		}

		setType(type, elementSize) {
			this.type = type;
			this.elementSize = elementSize;
			return this;
		}

		setItemSize(itemSize) {
			this.itemSize = itemSize;
			return this;
		}

		setCount(count) {
			this.count = count;
			return this;
		}

	}

	GLBufferAttribute.prototype.isGLBufferAttribute = true;

	class Raycaster {
		constructor(origin, direction, near = 0, far = Infinity) {
			this.ray = new Ray(origin, direction); // direction is assumed to be normalized (for accurate distance calculations)

			this.near = near;
			this.far = far;
			this.camera = null;
			this.layers = new Layers();
			this.params = {
				Mesh: {},
				Line: {
					threshold: 1
				},
				LOD: {},
				Points: {
					threshold: 1
				},
				Sprite: {}
			};
		}

		set(origin, direction) {
			// direction is assumed to be normalized (for accurate distance calculations)
			this.ray.set(origin, direction);
		}

		setFromCamera(coords, camera) {
			if (camera && camera.isPerspectiveCamera) {
				this.ray.origin.setFromMatrixPosition(camera.matrixWorld);
				this.ray.direction.set(coords.x, coords.y, 0.5).unproject(camera).sub(this.ray.origin).normalize();
				this.camera = camera;
			} else if (camera && camera.isOrthographicCamera) {
				this.ray.origin.set(coords.x, coords.y, (camera.near + camera.far) / (camera.near - camera.far)).unproject(camera); // set origin in plane of camera

				this.ray.direction.set(0, 0, -1).transformDirection(camera.matrixWorld);
				this.camera = camera;
			} else {
				console.error('THREE.Raycaster: Unsupported camera type: ' + camera.type);
			}
		}

		intersectObject(object, recursive = true, intersects = []) {
			intersectObject(object, this, intersects, recursive);
			intersects.sort(ascSort);
			return intersects;
		}

		intersectObjects(objects, recursive = true, intersects = []) {
			for (let i = 0, l = objects.length; i < l; i++) {
				intersectObject(objects[i], this, intersects, recursive);
			}

			intersects.sort(ascSort);
			return intersects;
		}

	}

	function ascSort(a, b) {
		return a.distance - b.distance;
	}

	function intersectObject(object, raycaster, intersects, recursive) {
		if (object.layers.test(raycaster.layers)) {
			object.raycast(raycaster, intersects);
		}

		if (recursive === true) {
			const children = object.children;

			for (let i = 0, l = children.length; i < l; i++) {
				intersectObject(children[i], raycaster, intersects, true);
			}
		}
	}

	/**
	 * Ref: https://en.wikipedia.org/wiki/Spherical_coordinate_system
	 *
	 * The polar angle (phi) is measured from the positive y-axis. The positive y-axis is up.
	 * The azimuthal angle (theta) is measured from the positive z-axis.
	 */

	class Spherical {
		constructor(radius = 1, phi = 0, theta = 0) {
			this.radius = radius;
			this.phi = phi; // polar angle

			this.theta = theta; // azimuthal angle

			return this;
		}

		set(radius, phi, theta) {
			this.radius = radius;
			this.phi = phi;
			this.theta = theta;
			return this;
		}

		copy(other) {
			this.radius = other.radius;
			this.phi = other.phi;
			this.theta = other.theta;
			return this;
		} // restrict phi to be betwee EPS and PI-EPS


		makeSafe() {
			const EPS = 0.000001;
			this.phi = Math.max(EPS, Math.min(Math.PI - EPS, this.phi));
			return this;
		}

		setFromVector3(v) {
			return this.setFromCartesianCoords(v.x, v.y, v.z);
		}

		setFromCartesianCoords(x, y, z) {
			this.radius = Math.sqrt(x * x + y * y + z * z);

			if (this.radius === 0) {
				this.theta = 0;
				this.phi = 0;
			} else {
				this.theta = Math.atan2(x, z);
				this.phi = Math.acos(clamp(y / this.radius, -1, 1));
			}

			return this;
		}

		clone() {
			return new this.constructor().copy(this);
		}

	}

	/**
	 * Ref: https://en.wikipedia.org/wiki/Cylindrical_coordinate_system
	 */
	class Cylindrical {
		constructor(radius = 1, theta = 0, y = 0) {
			this.radius = radius; // distance from the origin to a point in the x-z plane

			this.theta = theta; // counterclockwise angle in the x-z plane measured in radians from the positive z-axis

			this.y = y; // height above the x-z plane

			return this;
		}

		set(radius, theta, y) {
			this.radius = radius;
			this.theta = theta;
			this.y = y;
			return this;
		}

		copy(other) {
			this.radius = other.radius;
			this.theta = other.theta;
			this.y = other.y;
			return this;
		}

		setFromVector3(v) {
			return this.setFromCartesianCoords(v.x, v.y, v.z);
		}

		setFromCartesianCoords(x, y, z) {
			this.radius = Math.sqrt(x * x + z * z);
			this.theta = Math.atan2(x, z);
			this.y = y;
			return this;
		}

		clone() {
			return new this.constructor().copy(this);
		}

	}

	const _vector$4 = /*@__PURE__*/new Vector2();

	class Box2 {
		constructor(min = new Vector2(+Infinity, +Infinity), max = new Vector2(-Infinity, -Infinity)) {
			this.min = min;
			this.max = max;
		}

		set(min, max) {
			this.min.copy(min);
			this.max.copy(max);
			return this;
		}

		setFromPoints(points) {
			this.makeEmpty();

			for (let i = 0, il = points.length; i < il; i++) {
				this.expandByPoint(points[i]);
			}

			return this;
		}

		setFromCenterAndSize(center, size) {
			const halfSize = _vector$4.copy(size).multiplyScalar(0.5);

			this.min.copy(center).sub(halfSize);
			this.max.copy(center).add(halfSize);
			return this;
		}

		clone() {
			return new this.constructor().copy(this);
		}

		copy(box) {
			this.min.copy(box.min);
			this.max.copy(box.max);
			return this;
		}

		makeEmpty() {
			this.min.x = this.min.y = +Infinity;
			this.max.x = this.max.y = -Infinity;
			return this;
		}

		isEmpty() {
			// this is a more robust check for empty than ( volume <= 0 ) because volume can get positive with two negative axes
			return this.max.x < this.min.x || this.max.y < this.min.y;
		}

		getCenter(target) {
			return this.isEmpty() ? target.set(0, 0) : target.addVectors(this.min, this.max).multiplyScalar(0.5);
		}

		getSize(target) {
			return this.isEmpty() ? target.set(0, 0) : target.subVectors(this.max, this.min);
		}

		expandByPoint(point) {
			this.min.min(point);
			this.max.max(point);
			return this;
		}

		expandByVector(vector) {
			this.min.sub(vector);
			this.max.add(vector);
			return this;
		}

		expandByScalar(scalar) {
			this.min.addScalar(-scalar);
			this.max.addScalar(scalar);
			return this;
		}

		containsPoint(point) {
			return point.x < this.min.x || point.x > this.max.x || point.y < this.min.y || point.y > this.max.y ? false : true;
		}

		containsBox(box) {
			return this.min.x <= box.min.x && box.max.x <= this.max.x && this.min.y <= box.min.y && box.max.y <= this.max.y;
		}

		getParameter(point, target) {
			// This can potentially have a divide by zero if the box
			// has a size dimension of 0.
			return target.set((point.x - this.min.x) / (this.max.x - this.min.x), (point.y - this.min.y) / (this.max.y - this.min.y));
		}

		intersectsBox(box) {
			// using 4 splitting planes to rule out intersections
			return box.max.x < this.min.x || box.min.x > this.max.x || box.max.y < this.min.y || box.min.y > this.max.y ? false : true;
		}

		clampPoint(point, target) {
			return target.copy(point).clamp(this.min, this.max);
		}

		distanceToPoint(point) {
			const clampedPoint = _vector$4.copy(point).clamp(this.min, this.max);

			return clampedPoint.sub(point).length();
		}

		intersect(box) {
			this.min.max(box.min);
			this.max.min(box.max);
			return this;
		}

		union(box) {
			this.min.min(box.min);
			this.max.max(box.max);
			return this;
		}

		translate(offset) {
			this.min.add(offset);
			this.max.add(offset);
			return this;
		}

		equals(box) {
			return box.min.equals(this.min) && box.max.equals(this.max);
		}

	}

	Box2.prototype.isBox2 = true;

	const _startP = /*@__PURE__*/new Vector3();

	const _startEnd = /*@__PURE__*/new Vector3();

	class Line3 {
		constructor(start = new Vector3(), end = new Vector3()) {
			this.start = start;
			this.end = end;
		}

		set(start, end) {
			this.start.copy(start);
			this.end.copy(end);
			return this;
		}

		copy(line) {
			this.start.copy(line.start);
			this.end.copy(line.end);
			return this;
		}

		getCenter(target) {
			return target.addVectors(this.start, this.end).multiplyScalar(0.5);
		}

		delta(target) {
			return target.subVectors(this.end, this.start);
		}

		distanceSq() {
			return this.start.distanceToSquared(this.end);
		}

		distance() {
			return this.start.distanceTo(this.end);
		}

		at(t, target) {
			return this.delta(target).multiplyScalar(t).add(this.start);
		}

		closestPointToPointParameter(point, clampToLine) {
			_startP.subVectors(point, this.start);

			_startEnd.subVectors(this.end, this.start);

			const startEnd2 = _startEnd.dot(_startEnd);

			const startEnd_startP = _startEnd.dot(_startP);

			let t = startEnd_startP / startEnd2;

			if (clampToLine) {
				t = clamp(t, 0, 1);
			}

			return t;
		}

		closestPointToPoint(point, clampToLine, target) {
			const t = this.closestPointToPointParameter(point, clampToLine);
			return this.delta(target).multiplyScalar(t).add(this.start);
		}

		applyMatrix4(matrix) {
			this.start.applyMatrix4(matrix);
			this.end.applyMatrix4(matrix);
			return this;
		}

		equals(line) {
			return line.start.equals(this.start) && line.end.equals(this.end);
		}

		clone() {
			return new this.constructor().copy(this);
		}

	}

	class ImmediateRenderObject extends Object3D {
		constructor(material) {
			super();
			this.material = material;

			this.render = function () {};

			this.hasPositions = false;
			this.hasNormals = false;
			this.hasColors = false;
			this.hasUvs = false;
			this.positionArray = null;
			this.normalArray = null;
			this.colorArray = null;
			this.uvArray = null;
			this.count = 0;
		}

	}

	ImmediateRenderObject.prototype.isImmediateRenderObject = true;

	const _vector$3 = /*@__PURE__*/new Vector3();

	class SpotLightHelper extends Object3D {
		constructor(light, color) {
			super();
			this.light = light;
			this.light.updateMatrixWorld();
			this.matrix = light.matrixWorld;
			this.matrixAutoUpdate = false;
			this.color = color;
			const geometry = new BufferGeometry();
			const positions = [0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, -1, 0, 1, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, -1, 1];

			for (let i = 0, j = 1, l = 32; i < l; i++, j++) {
				const p1 = i / l * Math.PI * 2;
				const p2 = j / l * Math.PI * 2;
				positions.push(Math.cos(p1), Math.sin(p1), 1, Math.cos(p2), Math.sin(p2), 1);
			}

			geometry.setAttribute('position', new Float32BufferAttribute(positions, 3));
			const material = new LineBasicMaterial({
				fog: false,
				toneMapped: false
			});
			this.cone = new LineSegments(geometry, material);
			this.add(this.cone);
			this.update();
		}

		dispose() {
			this.cone.geometry.dispose();
			this.cone.material.dispose();
		}

		update() {
			this.light.updateMatrixWorld();
			const coneLength = this.light.distance ? this.light.distance : 1000;
			const coneWidth = coneLength * Math.tan(this.light.angle);
			this.cone.scale.set(coneWidth, coneWidth, coneLength);

			_vector$3.setFromMatrixPosition(this.light.target.matrixWorld);

			this.cone.lookAt(_vector$3);

			if (this.color !== undefined) {
				this.cone.material.color.set(this.color);
			} else {
				this.cone.material.color.copy(this.light.color);
			}
		}

	}

	const _vector$2 = /*@__PURE__*/new Vector3();

	const _boneMatrix = /*@__PURE__*/new Matrix4();

	const _matrixWorldInv = /*@__PURE__*/new Matrix4();

	class SkeletonHelper extends LineSegments {
		constructor(object) {
			const bones = getBoneList(object);
			const geometry = new BufferGeometry();
			const vertices = [];
			const colors = [];
			const color1 = new Color(0, 0, 1);
			const color2 = new Color(0, 1, 0);

			for (let i = 0; i < bones.length; i++) {
				const bone = bones[i];

				if (bone.parent && bone.parent.isBone) {
					vertices.push(0, 0, 0);
					vertices.push(0, 0, 0);
					colors.push(color1.r, color1.g, color1.b);
					colors.push(color2.r, color2.g, color2.b);
				}
			}

			geometry.setAttribute('position', new Float32BufferAttribute(vertices, 3));
			geometry.setAttribute('color', new Float32BufferAttribute(colors, 3));
			const material = new LineBasicMaterial({
				vertexColors: true,
				depthTest: false,
				depthWrite: false,
				toneMapped: false,
				transparent: true
			});
			super(geometry, material);
			this.type = 'SkeletonHelper';
			this.isSkeletonHelper = true;
			this.root = object;
			this.bones = bones;
			this.matrix = object.matrixWorld;
			this.matrixAutoUpdate = false;
		}

		updateMatrixWorld(force) {
			const bones = this.bones;
			const geometry = this.geometry;
			const position = geometry.getAttribute('position');

			_matrixWorldInv.copy(this.root.matrixWorld).invert();

			for (let i = 0, j = 0; i < bones.length; i++) {
				const bone = bones[i];

				if (bone.parent && bone.parent.isBone) {
					_boneMatrix.multiplyMatrices(_matrixWorldInv, bone.matrixWorld);

					_vector$2.setFromMatrixPosition(_boneMatrix);

					position.setXYZ(j, _vector$2.x, _vector$2.y, _vector$2.z);

					_boneMatrix.multiplyMatrices(_matrixWorldInv, bone.parent.matrixWorld);

					_vector$2.setFromMatrixPosition(_boneMatrix);

					position.setXYZ(j + 1, _vector$2.x, _vector$2.y, _vector$2.z);
					j += 2;
				}
			}

			geometry.getAttribute('position').needsUpdate = true;
			super.updateMatrixWorld(force);
		}

	}

	function getBoneList(object) {
		const boneList = [];

		if (object && object.isBone) {
			boneList.push(object);
		}

		for (let i = 0; i < object.children.length; i++) {
			boneList.push.apply(boneList, getBoneList(object.children[i]));
		}

		return boneList;
	}

	class PointLightHelper extends Mesh {
		constructor(light, sphereSize, color) {
			const geometry = new SphereGeometry(sphereSize, 4, 2);
			const material = new MeshBasicMaterial({
				wireframe: true,
				fog: false,
				toneMapped: false
			});
			super(geometry, material);
			this.light = light;
			this.light.updateMatrixWorld();
			this.color = color;
			this.type = 'PointLightHelper';
			this.matrix = this.light.matrixWorld;
			this.matrixAutoUpdate = false;
			this.update();
			/*
			// TODO: delete this comment?
			const distanceGeometry = new THREE.IcosahedronBufferGeometry( 1, 2 );
			const distanceMaterial = new THREE.MeshBasicMaterial( { color: hexColor, fog: false, wireframe: true, opacity: 0.1, transparent: true } );
			this.lightSphere = new THREE.Mesh( bulbGeometry, bulbMaterial );
			this.lightDistance = new THREE.Mesh( distanceGeometry, distanceMaterial );
			const d = light.distance;
			if ( d === 0.0 ) {
				this.lightDistance.visible = false;
			} else {
				this.lightDistance.scale.set( d, d, d );
			}
			this.add( this.lightDistance );
			*/
		}

		dispose() {
			this.geometry.dispose();
			this.material.dispose();
		}

		update() {
			if (this.color !== undefined) {
				this.material.color.set(this.color);
			} else {
				this.material.color.copy(this.light.color);
			}
			/*
			const d = this.light.distance;
				if ( d === 0.0 ) {
					this.lightDistance.visible = false;
				} else {
					this.lightDistance.visible = true;
				this.lightDistance.scale.set( d, d, d );
				}
			*/

		}

	}

	const _vector$1 = /*@__PURE__*/new Vector3();

	const _color1 = /*@__PURE__*/new Color();

	const _color2 = /*@__PURE__*/new Color();

	class HemisphereLightHelper extends Object3D {
		constructor(light, size, color) {
			super();
			this.light = light;
			this.light.updateMatrixWorld();
			this.matrix = light.matrixWorld;
			this.matrixAutoUpdate = false;
			this.color = color;
			const geometry = new OctahedronGeometry(size);
			geometry.rotateY(Math.PI * 0.5);
			this.material = new MeshBasicMaterial({
				wireframe: true,
				fog: false,
				toneMapped: false
			});
			if (this.color === undefined) this.material.vertexColors = true;
			const position = geometry.getAttribute('position');
			const colors = new Float32Array(position.count * 3);
			geometry.setAttribute('color', new BufferAttribute(colors, 3));
			this.add(new Mesh(geometry, this.material));
			this.update();
		}

		dispose() {
			this.children[0].geometry.dispose();
			this.children[0].material.dispose();
		}

		update() {
			const mesh = this.children[0];

			if (this.color !== undefined) {
				this.material.color.set(this.color);
			} else {
				const colors = mesh.geometry.getAttribute('color');

				_color1.copy(this.light.color);

				_color2.copy(this.light.groundColor);

				for (let i = 0, l = colors.count; i < l; i++) {
					const color = i < l / 2 ? _color1 : _color2;
					colors.setXYZ(i, color.r, color.g, color.b);
				}

				colors.needsUpdate = true;
			}

			mesh.lookAt(_vector$1.setFromMatrixPosition(this.light.matrixWorld).negate());
		}

	}

	class GridHelper extends LineSegments {
		constructor(size = 10, divisions = 10, color1 = 0x444444, color2 = 0x888888) {
			color1 = new Color(color1);
			color2 = new Color(color2);
			const center = divisions / 2;
			const step = size / divisions;
			const halfSize = size / 2;
			const vertices = [],
						colors = [];

			for (let i = 0, j = 0, k = -halfSize; i <= divisions; i++, k += step) {
				vertices.push(-halfSize, 0, k, halfSize, 0, k);
				vertices.push(k, 0, -halfSize, k, 0, halfSize);
				const color = i === center ? color1 : color2;
				color.toArray(colors, j);
				j += 3;
				color.toArray(colors, j);
				j += 3;
				color.toArray(colors, j);
				j += 3;
				color.toArray(colors, j);
				j += 3;
			}

			const geometry = new BufferGeometry();
			geometry.setAttribute('position', new Float32BufferAttribute(vertices, 3));
			geometry.setAttribute('color', new Float32BufferAttribute(colors, 3));
			const material = new LineBasicMaterial({
				vertexColors: true,
				toneMapped: false
			});
			super(geometry, material);
			this.type = 'GridHelper';
		}

	}

	class PolarGridHelper extends LineSegments {
		constructor(radius = 10, radials = 16, circles = 8, divisions = 64, color1 = 0x444444, color2 = 0x888888) {
			color1 = new Color(color1);
			color2 = new Color(color2);
			const vertices = [];
			const colors = []; // create the radials

			for (let i = 0; i <= radials; i++) {
				const v = i / radials * (Math.PI * 2);
				const x = Math.sin(v) * radius;
				const z = Math.cos(v) * radius;
				vertices.push(0, 0, 0);
				vertices.push(x, 0, z);
				const color = i & 1 ? color1 : color2;
				colors.push(color.r, color.g, color.b);
				colors.push(color.r, color.g, color.b);
			} // create the circles


			for (let i = 0; i <= circles; i++) {
				const color = i & 1 ? color1 : color2;
				const r = radius - radius / circles * i;

				for (let j = 0; j < divisions; j++) {
					// first vertex
					let v = j / divisions * (Math.PI * 2);
					let x = Math.sin(v) * r;
					let z = Math.cos(v) * r;
					vertices.push(x, 0, z);
					colors.push(color.r, color.g, color.b); // second vertex

					v = (j + 1) / divisions * (Math.PI * 2);
					x = Math.sin(v) * r;
					z = Math.cos(v) * r;
					vertices.push(x, 0, z);
					colors.push(color.r, color.g, color.b);
				}
			}

			const geometry = new BufferGeometry();
			geometry.setAttribute('position', new Float32BufferAttribute(vertices, 3));
			geometry.setAttribute('color', new Float32BufferAttribute(colors, 3));
			const material = new LineBasicMaterial({
				vertexColors: true,
				toneMapped: false
			});
			super(geometry, material);
			this.type = 'PolarGridHelper';
		}

	}

	const _v1 = /*@__PURE__*/new Vector3();

	const _v2 = /*@__PURE__*/new Vector3();

	const _v3 = /*@__PURE__*/new Vector3();

	class DirectionalLightHelper extends Object3D {
		constructor(light, size, color) {
			super();
			this.light = light;
			this.light.updateMatrixWorld();
			this.matrix = light.matrixWorld;
			this.matrixAutoUpdate = false;
			this.color = color;
			if (size === undefined) size = 1;
			let geometry = new BufferGeometry();
			geometry.setAttribute('position', new Float32BufferAttribute([-size, size, 0, size, size, 0, size, -size, 0, -size, -size, 0, -size, size, 0], 3));
			const material = new LineBasicMaterial({
				fog: false,
				toneMapped: false
			});
			this.lightPlane = new Line(geometry, material);
			this.add(this.lightPlane);
			geometry = new BufferGeometry();
			geometry.setAttribute('position', new Float32BufferAttribute([0, 0, 0, 0, 0, 1], 3));
			this.targetLine = new Line(geometry, material);
			this.add(this.targetLine);
			this.update();
		}

		dispose() {
			this.lightPlane.geometry.dispose();
			this.lightPlane.material.dispose();
			this.targetLine.geometry.dispose();
			this.targetLine.material.dispose();
		}

		update() {
			_v1.setFromMatrixPosition(this.light.matrixWorld);

			_v2.setFromMatrixPosition(this.light.target.matrixWorld);

			_v3.subVectors(_v2, _v1);

			this.lightPlane.lookAt(_v2);

			if (this.color !== undefined) {
				this.lightPlane.material.color.set(this.color);
				this.targetLine.material.color.set(this.color);
			} else {
				this.lightPlane.material.color.copy(this.light.color);
				this.targetLine.material.color.copy(this.light.color);
			}

			this.targetLine.lookAt(_v2);
			this.targetLine.scale.z = _v3.length();
		}

	}

	const _vector = /*@__PURE__*/new Vector3();

	const _camera = /*@__PURE__*/new Camera();
	/**
	 *	- shows frustum, line of sight and up of the camera
	 *	- suitable for fast updates
	 * 	- based on frustum visualization in lightgl.js shadowmap example
	 *		http://evanw.github.com/lightgl.js/tests/shadowmap.html
	 */


	class CameraHelper extends LineSegments {
		constructor(camera) {
			const geometry = new BufferGeometry();
			const material = new LineBasicMaterial({
				color: 0xffffff,
				vertexColors: true,
				toneMapped: false
			});
			const vertices = [];
			const colors = [];
			const pointMap = {}; // colors

			const colorFrustum = new Color(0xffaa00);
			const colorCone = new Color(0xff0000);
			const colorUp = new Color(0x00aaff);
			const colorTarget = new Color(0xffffff);
			const colorCross = new Color(0x333333); // near

			addLine('n1', 'n2', colorFrustum);
			addLine('n2', 'n4', colorFrustum);
			addLine('n4', 'n3', colorFrustum);
			addLine('n3', 'n1', colorFrustum); // far

			addLine('f1', 'f2', colorFrustum);
			addLine('f2', 'f4', colorFrustum);
			addLine('f4', 'f3', colorFrustum);
			addLine('f3', 'f1', colorFrustum); // sides

			addLine('n1', 'f1', colorFrustum);
			addLine('n2', 'f2', colorFrustum);
			addLine('n3', 'f3', colorFrustum);
			addLine('n4', 'f4', colorFrustum); // cone

			addLine('p', 'n1', colorCone);
			addLine('p', 'n2', colorCone);
			addLine('p', 'n3', colorCone);
			addLine('p', 'n4', colorCone); // up

			addLine('u1', 'u2', colorUp);
			addLine('u2', 'u3', colorUp);
			addLine('u3', 'u1', colorUp); // target

			addLine('c', 't', colorTarget);
			addLine('p', 'c', colorCross); // cross

			addLine('cn1', 'cn2', colorCross);
			addLine('cn3', 'cn4', colorCross);
			addLine('cf1', 'cf2', colorCross);
			addLine('cf3', 'cf4', colorCross);

			function addLine(a, b, color) {
				addPoint(a, color);
				addPoint(b, color);
			}

			function addPoint(id, color) {
				vertices.push(0, 0, 0);
				colors.push(color.r, color.g, color.b);

				if (pointMap[id] === undefined) {
					pointMap[id] = [];
				}

				pointMap[id].push(vertices.length / 3 - 1);
			}

			geometry.setAttribute('position', new Float32BufferAttribute(vertices, 3));
			geometry.setAttribute('color', new Float32BufferAttribute(colors, 3));
			super(geometry, material);
			this.type = 'CameraHelper';
			this.camera = camera;
			if (this.camera.updateProjectionMatrix) this.camera.updateProjectionMatrix();
			this.matrix = camera.matrixWorld;
			this.matrixAutoUpdate = false;
			this.pointMap = pointMap;
			this.update();
		}

		update() {
			const geometry = this.geometry;
			const pointMap = this.pointMap;
			const w = 1,
						h = 1; // we need just camera projection matrix inverse
			// world matrix must be identity

			_camera.projectionMatrixInverse.copy(this.camera.projectionMatrixInverse); // center / target


			setPoint('c', pointMap, geometry, _camera, 0, 0, -1);
			setPoint('t', pointMap, geometry, _camera, 0, 0, 1); // near

			setPoint('n1', pointMap, geometry, _camera, -w, -h, -1);
			setPoint('n2', pointMap, geometry, _camera, w, -h, -1);
			setPoint('n3', pointMap, geometry, _camera, -w, h, -1);
			setPoint('n4', pointMap, geometry, _camera, w, h, -1); // far

			setPoint('f1', pointMap, geometry, _camera, -w, -h, 1);
			setPoint('f2', pointMap, geometry, _camera, w, -h, 1);
			setPoint('f3', pointMap, geometry, _camera, -w, h, 1);
			setPoint('f4', pointMap, geometry, _camera, w, h, 1); // up

			setPoint('u1', pointMap, geometry, _camera, w * 0.7, h * 1.1, -1);
			setPoint('u2', pointMap, geometry, _camera, -w * 0.7, h * 1.1, -1);
			setPoint('u3', pointMap, geometry, _camera, 0, h * 2, -1); // cross

			setPoint('cf1', pointMap, geometry, _camera, -w, 0, 1);
			setPoint('cf2', pointMap, geometry, _camera, w, 0, 1);
			setPoint('cf3', pointMap, geometry, _camera, 0, -h, 1);
			setPoint('cf4', pointMap, geometry, _camera, 0, h, 1);
			setPoint('cn1', pointMap, geometry, _camera, -w, 0, -1);
			setPoint('cn2', pointMap, geometry, _camera, w, 0, -1);
			setPoint('cn3', pointMap, geometry, _camera, 0, -h, -1);
			setPoint('cn4', pointMap, geometry, _camera, 0, h, -1);
			geometry.getAttribute('position').needsUpdate = true;
		}

		dispose() {
			this.geometry.dispose();
			this.material.dispose();
		}

	}

	function setPoint(point, pointMap, geometry, camera, x, y, z) {
		_vector.set(x, y, z).unproject(camera);

		const points = pointMap[point];

		if (points !== undefined) {
			const position = geometry.getAttribute('position');

			for (let i = 0, l = points.length; i < l; i++) {
				position.setXYZ(points[i], _vector.x, _vector.y, _vector.z);
			}
		}
	}

	const _box = /*@__PURE__*/new Box3();

	class BoxHelper extends LineSegments {
		constructor(object, color = 0xffff00) {
			const indices = new Uint16Array([0, 1, 1, 2, 2, 3, 3, 0, 4, 5, 5, 6, 6, 7, 7, 4, 0, 4, 1, 5, 2, 6, 3, 7]);
			const positions = new Float32Array(8 * 3);
			const geometry = new BufferGeometry();
			geometry.setIndex(new BufferAttribute(indices, 1));
			geometry.setAttribute('position', new BufferAttribute(positions, 3));
			super(geometry, new LineBasicMaterial({
				color: color,
				toneMapped: false
			}));
			this.object = object;
			this.type = 'BoxHelper';
			this.matrixAutoUpdate = false;
			this.update();
		}

		update(object) {
			if (object !== undefined) {
				console.warn('THREE.BoxHelper: .update() has no longer arguments.');
			}

			if (this.object !== undefined) {
				_box.setFromObject(this.object);
			}

			if (_box.isEmpty()) return;
			const min = _box.min;
			const max = _box.max;
			/*
				5____4
			1/___0/|
			| 6__|_7
			2/___3/
				0: max.x, max.y, max.z
			1: min.x, max.y, max.z
			2: min.x, min.y, max.z
			3: max.x, min.y, max.z
			4: max.x, max.y, min.z
			5: min.x, max.y, min.z
			6: min.x, min.y, min.z
			7: max.x, min.y, min.z
			*/

			const position = this.geometry.attributes.position;
			const array = position.array;
			array[0] = max.x;
			array[1] = max.y;
			array[2] = max.z;
			array[3] = min.x;
			array[4] = max.y;
			array[5] = max.z;
			array[6] = min.x;
			array[7] = min.y;
			array[8] = max.z;
			array[9] = max.x;
			array[10] = min.y;
			array[11] = max.z;
			array[12] = max.x;
			array[13] = max.y;
			array[14] = min.z;
			array[15] = min.x;
			array[16] = max.y;
			array[17] = min.z;
			array[18] = min.x;
			array[19] = min.y;
			array[20] = min.z;
			array[21] = max.x;
			array[22] = min.y;
			array[23] = min.z;
			position.needsUpdate = true;
			this.geometry.computeBoundingSphere();
		}

		setFromObject(object) {
			this.object = object;
			this.update();
			return this;
		}

		copy(source) {
			LineSegments.prototype.copy.call(this, source);
			this.object = source.object;
			return this;
		}

	}

	class Box3Helper extends LineSegments {
		constructor(box, color = 0xffff00) {
			const indices = new Uint16Array([0, 1, 1, 2, 2, 3, 3, 0, 4, 5, 5, 6, 6, 7, 7, 4, 0, 4, 1, 5, 2, 6, 3, 7]);
			const positions = [1, 1, 1, -1, 1, 1, -1, -1, 1, 1, -1, 1, 1, 1, -1, -1, 1, -1, -1, -1, -1, 1, -1, -1];
			const geometry = new BufferGeometry();
			geometry.setIndex(new BufferAttribute(indices, 1));
			geometry.setAttribute('position', new Float32BufferAttribute(positions, 3));
			super(geometry, new LineBasicMaterial({
				color: color,
				toneMapped: false
			}));
			this.box = box;
			this.type = 'Box3Helper';
			this.geometry.computeBoundingSphere();
		}

		updateMatrixWorld(force) {
			const box = this.box;
			if (box.isEmpty()) return;
			box.getCenter(this.position);
			box.getSize(this.scale);
			this.scale.multiplyScalar(0.5);
			super.updateMatrixWorld(force);
		}

	}

	class PlaneHelper extends Line {
		constructor(plane, size = 1, hex = 0xffff00) {
			const color = hex;
			const positions = [1, -1, 1, -1, 1, 1, -1, -1, 1, 1, 1, 1, -1, 1, 1, -1, -1, 1, 1, -1, 1, 1, 1, 1, 0, 0, 1, 0, 0, 0];
			const geometry = new BufferGeometry();
			geometry.setAttribute('position', new Float32BufferAttribute(positions, 3));
			geometry.computeBoundingSphere();
			super(geometry, new LineBasicMaterial({
				color: color,
				toneMapped: false
			}));
			this.type = 'PlaneHelper';
			this.plane = plane;
			this.size = size;
			const positions2 = [1, 1, 1, -1, 1, 1, -1, -1, 1, 1, 1, 1, -1, -1, 1, 1, -1, 1];
			const geometry2 = new BufferGeometry();
			geometry2.setAttribute('position', new Float32BufferAttribute(positions2, 3));
			geometry2.computeBoundingSphere();
			this.add(new Mesh(geometry2, new MeshBasicMaterial({
				color: color,
				opacity: 0.2,
				transparent: true,
				depthWrite: false,
				toneMapped: false
			})));
		}

		updateMatrixWorld(force) {
			let scale = -this.plane.constant;
			if (Math.abs(scale) < 1e-8) scale = 1e-8; // sign does not matter

			this.scale.set(0.5 * this.size, 0.5 * this.size, scale);
			this.children[0].material.side = scale < 0 ? BackSide : FrontSide; // renderer flips side when determinant < 0; flipping not wanted here

			this.lookAt(this.plane.normal);
			super.updateMatrixWorld(force);
		}

	}

	const _axis = /*@__PURE__*/new Vector3();

	let _lineGeometry, _coneGeometry;

	class ArrowHelper extends Object3D {
		// dir is assumed to be normalized
		constructor(dir = new Vector3(0, 0, 1), origin = new Vector3(0, 0, 0), length = 1, color = 0xffff00, headLength = length * 0.2, headWidth = headLength * 0.2) {
			super();
			this.type = 'ArrowHelper';

			if (_lineGeometry === undefined) {
				_lineGeometry = new BufferGeometry();

				_lineGeometry.setAttribute('position', new Float32BufferAttribute([0, 0, 0, 0, 1, 0], 3));

				_coneGeometry = new CylinderGeometry(0, 0.5, 1, 5, 1);

				_coneGeometry.translate(0, -0.5, 0);
			}

			this.position.copy(origin);
			this.line = new Line(_lineGeometry, new LineBasicMaterial({
				color: color,
				toneMapped: false
			}));
			this.line.matrixAutoUpdate = false;
			this.add(this.line);
			this.cone = new Mesh(_coneGeometry, new MeshBasicMaterial({
				color: color,
				toneMapped: false
			}));
			this.cone.matrixAutoUpdate = false;
			this.add(this.cone);
			this.setDirection(dir);
			this.setLength(length, headLength, headWidth);
		}

		setDirection(dir) {
			// dir is assumed to be normalized
			if (dir.y > 0.99999) {
				this.quaternion.set(0, 0, 0, 1);
			} else if (dir.y < -0.99999) {
				this.quaternion.set(1, 0, 0, 0);
			} else {
				_axis.set(dir.z, 0, -dir.x).normalize();

				const radians = Math.acos(dir.y);
				this.quaternion.setFromAxisAngle(_axis, radians);
			}
		}

		setLength(length, headLength = length * 0.2, headWidth = headLength * 0.2) {
			this.line.scale.set(1, Math.max(0.0001, length - headLength), 1); // see #17458

			this.line.updateMatrix();
			this.cone.scale.set(headWidth, headLength, headWidth);
			this.cone.position.y = length;
			this.cone.updateMatrix();
		}

		setColor(color) {
			this.line.material.color.set(color);
			this.cone.material.color.set(color);
		}

		copy(source) {
			super.copy(source, false);
			this.line.copy(source.line);
			this.cone.copy(source.cone);
			return this;
		}

	}

	class AxesHelper extends LineSegments {
		constructor(size = 1) {
			const vertices = [0, 0, 0, size, 0, 0, 0, 0, 0, 0, size, 0, 0, 0, 0, 0, 0, size];
			const colors = [1, 0, 0, 1, 0.6, 0, 0, 1, 0, 0.6, 1, 0, 0, 0, 1, 0, 0.6, 1];
			const geometry = new BufferGeometry();
			geometry.setAttribute('position', new Float32BufferAttribute(vertices, 3));
			geometry.setAttribute('color', new Float32BufferAttribute(colors, 3));
			const material = new LineBasicMaterial({
				vertexColors: true,
				toneMapped: false
			});
			super(geometry, material);
			this.type = 'AxesHelper';
		}

		setColors(xAxisColor, yAxisColor, zAxisColor) {
			const color = new Color();
			const array = this.geometry.attributes.color.array;
			color.set(xAxisColor);
			color.toArray(array, 0);
			color.toArray(array, 3);
			color.set(yAxisColor);
			color.toArray(array, 6);
			color.toArray(array, 9);
			color.set(zAxisColor);
			color.toArray(array, 12);
			color.toArray(array, 15);
			this.geometry.attributes.color.needsUpdate = true;
			return this;
		}

		dispose() {
			this.geometry.dispose();
			this.material.dispose();
		}

	}

	class ShapePath {
		constructor() {
			this.type = 'ShapePath';
			this.color = new Color();
			this.subPaths = [];
			this.currentPath = null;
		}

		moveTo(x, y) {
			this.currentPath = new Path();
			this.subPaths.push(this.currentPath);
			this.currentPath.moveTo(x, y);
			return this;
		}

		lineTo(x, y) {
			this.currentPath.lineTo(x, y);
			return this;
		}

		quadraticCurveTo(aCPx, aCPy, aX, aY) {
			this.currentPath.quadraticCurveTo(aCPx, aCPy, aX, aY);
			return this;
		}

		bezierCurveTo(aCP1x, aCP1y, aCP2x, aCP2y, aX, aY) {
			this.currentPath.bezierCurveTo(aCP1x, aCP1y, aCP2x, aCP2y, aX, aY);
			return this;
		}

		splineThru(pts) {
			this.currentPath.splineThru(pts);
			return this;
		}

		toShapes(isCCW, noHoles) {
			function toShapesNoHoles(inSubpaths) {
				const shapes = [];

				for (let i = 0, l = inSubpaths.length; i < l; i++) {
					const tmpPath = inSubpaths[i];
					const tmpShape = new Shape();
					tmpShape.curves = tmpPath.curves;
					shapes.push(tmpShape);
				}

				return shapes;
			}

			function isPointInsidePolygon(inPt, inPolygon) {
				const polyLen = inPolygon.length; // inPt on polygon contour => immediate success		or
				// toggling of inside/outside at every single! intersection point of an edge
				//	with the horizontal line through inPt, left of inPt
				//	not counting lowerY endpoints of edges and whole edges on that line

				let inside = false;

				for (let p = polyLen - 1, q = 0; q < polyLen; p = q++) {
					let edgeLowPt = inPolygon[p];
					let edgeHighPt = inPolygon[q];
					let edgeDx = edgeHighPt.x - edgeLowPt.x;
					let edgeDy = edgeHighPt.y - edgeLowPt.y;

					if (Math.abs(edgeDy) > Number.EPSILON) {
						// not parallel
						if (edgeDy < 0) {
							edgeLowPt = inPolygon[q];
							edgeDx = -edgeDx;
							edgeHighPt = inPolygon[p];
							edgeDy = -edgeDy;
						}

						if (inPt.y < edgeLowPt.y || inPt.y > edgeHighPt.y) continue;

						if (inPt.y === edgeLowPt.y) {
							if (inPt.x === edgeLowPt.x) return true; // inPt is on contour ?
							// continue;				// no intersection or edgeLowPt => doesn't count !!!
						} else {
							const perpEdge = edgeDy * (inPt.x - edgeLowPt.x) - edgeDx * (inPt.y - edgeLowPt.y);
							if (perpEdge === 0) return true; // inPt is on contour ?

							if (perpEdge < 0) continue;
							inside = !inside; // true intersection left of inPt
						}
					} else {
						// parallel or collinear
						if (inPt.y !== edgeLowPt.y) continue; // parallel
						// edge lies on the same horizontal line as inPt

						if (edgeHighPt.x <= inPt.x && inPt.x <= edgeLowPt.x || edgeLowPt.x <= inPt.x && inPt.x <= edgeHighPt.x) return true; // inPt: Point on contour !
						// continue;
					}
				}

				return inside;
			}

			const isClockWise = ShapeUtils.isClockWise;
			const subPaths = this.subPaths;
			if (subPaths.length === 0) return [];
			if (noHoles === true) return toShapesNoHoles(subPaths);
			let solid, tmpPath, tmpShape;
			const shapes = [];

			if (subPaths.length === 1) {
				tmpPath = subPaths[0];
				tmpShape = new Shape();
				tmpShape.curves = tmpPath.curves;
				shapes.push(tmpShape);
				return shapes;
			}

			let holesFirst = !isClockWise(subPaths[0].getPoints());
			holesFirst = isCCW ? !holesFirst : holesFirst; // console.log("Holes first", holesFirst);

			const betterShapeHoles = [];
			const newShapes = [];
			let newShapeHoles = [];
			let mainIdx = 0;
			let tmpPoints;
			newShapes[mainIdx] = undefined;
			newShapeHoles[mainIdx] = [];

			for (let i = 0, l = subPaths.length; i < l; i++) {
				tmpPath = subPaths[i];
				tmpPoints = tmpPath.getPoints();
				solid = isClockWise(tmpPoints);
				solid = isCCW ? !solid : solid;

				if (solid) {
					if (!holesFirst && newShapes[mainIdx]) mainIdx++;
					newShapes[mainIdx] = {
						s: new Shape(),
						p: tmpPoints
					};
					newShapes[mainIdx].s.curves = tmpPath.curves;
					if (holesFirst) mainIdx++;
					newShapeHoles[mainIdx] = []; //console.log('cw', i);
				} else {
					newShapeHoles[mainIdx].push({
						h: tmpPath,
						p: tmpPoints[0]
					}); //console.log('ccw', i);
				}
			} // only Holes? -> probably all Shapes with wrong orientation


			if (!newShapes[0]) return toShapesNoHoles(subPaths);

			if (newShapes.length > 1) {
				let ambiguous = false;
				const toChange = [];

				for (let sIdx = 0, sLen = newShapes.length; sIdx < sLen; sIdx++) {
					betterShapeHoles[sIdx] = [];
				}

				for (let sIdx = 0, sLen = newShapes.length; sIdx < sLen; sIdx++) {
					const sho = newShapeHoles[sIdx];

					for (let hIdx = 0; hIdx < sho.length; hIdx++) {
						const ho = sho[hIdx];
						let hole_unassigned = true;

						for (let s2Idx = 0; s2Idx < newShapes.length; s2Idx++) {
							if (isPointInsidePolygon(ho.p, newShapes[s2Idx].p)) {
								if (sIdx !== s2Idx) toChange.push({
									froms: sIdx,
									tos: s2Idx,
									hole: hIdx
								});

								if (hole_unassigned) {
									hole_unassigned = false;
									betterShapeHoles[s2Idx].push(ho);
								} else {
									ambiguous = true;
								}
							}
						}

						if (hole_unassigned) {
							betterShapeHoles[sIdx].push(ho);
						}
					}
				} // console.log("ambiguous: ", ambiguous);


				if (toChange.length > 0) {
					// console.log("to change: ", toChange);
					if (!ambiguous) newShapeHoles = betterShapeHoles;
				}
			}

			let tmpHoles;

			for (let i = 0, il = newShapes.length; i < il; i++) {
				tmpShape = newShapes[i].s;
				shapes.push(tmpShape);
				tmpHoles = newShapeHoles[i];

				for (let j = 0, jl = tmpHoles.length; j < jl; j++) {
					tmpShape.holes.push(tmpHoles[j].h);
				}
			} //console.log("shape", shapes);


			return shapes;
		}

	}

	const _floatView = new Float32Array(1);

	const _int32View = new Int32Array(_floatView.buffer);

	class DataUtils {
		// Converts float32 to float16 (stored as uint16 value).
		static toHalfFloat(val) {
			if (val > 65504) {
				console.warn('THREE.DataUtils.toHalfFloat(): value exceeds 65504.');
				val = 65504; // maximum representable value in float16
			} // Source: http://gamedev.stackexchange.com/questions/17326/conversion-of-a-number-from-single-precision-floating-point-representation-to-a/17410#17410

			/* This method is faster than the OpenEXR implementation (very often
			* used, eg. in Ogre), with the additional benefit of rounding, inspired
			* by James Tursa?s half-precision code. */


			_floatView[0] = val;
			const x = _int32View[0];
			let bits = x >> 16 & 0x8000;
			/* Get the sign */

			let m = x >> 12 & 0x07ff;
			/* Keep one extra bit for rounding */

			const e = x >> 23 & 0xff;
			/* Using int is faster here */

			/* If zero, or denormal, or exponent underflows too much for a denormal
				* half, return signed zero. */

			if (e < 103) return bits;
			/* If NaN, return NaN. If Inf or exponent overflow, return Inf. */

			if (e > 142) {
				bits |= 0x7c00;
				/* If exponent was 0xff and one mantissa bit was set, it means NaN,
							* not Inf, so make sure we set one mantissa bit too. */

				bits |= (e == 255 ? 0 : 1) && x & 0x007fffff;
				return bits;
			}
			/* If exponent underflows but not too much, return a denormal */


			if (e < 113) {
				m |= 0x0800;
				/* Extra rounding may overflow and set mantissa to 0 and exponent
					* to 1, which is OK. */

				bits |= (m >> 114 - e) + (m >> 113 - e & 1);
				return bits;
			}

			bits |= e - 112 << 10 | m >> 1;
			/* Extra rounding. An overflow will set mantissa to 0 and increment
				* the exponent, which is OK. */

			bits += m & 1;
			return bits;
		}

	}

	const LineStrip = 0;
	const LinePieces = 1;
	const NoColors = 0;
	const FaceColors = 1;
	const VertexColors = 2;
	function MeshFaceMaterial(materials) {
		console.warn('THREE.MeshFaceMaterial has been removed. Use an Array instead.');
		return materials;
	}
	function MultiMaterial(materials = []) {
		console.warn('THREE.MultiMaterial has been removed. Use an Array instead.');
		materials.isMultiMaterial = true;
		materials.materials = materials;

		materials.clone = function () {
			return materials.slice();
		};

		return materials;
	}
	function PointCloud(geometry, material) {
		console.warn('THREE.PointCloud has been renamed to THREE.Points.');
		return new Points(geometry, material);
	}
	function Particle(material) {
		console.warn('THREE.Particle has been renamed to THREE.Sprite.');
		return new Sprite(material);
	}
	function ParticleSystem(geometry, material) {
		console.warn('THREE.ParticleSystem has been renamed to THREE.Points.');
		return new Points(geometry, material);
	}
	function PointCloudMaterial(parameters) {
		console.warn('THREE.PointCloudMaterial has been renamed to THREE.PointsMaterial.');
		return new PointsMaterial(parameters);
	}
	function ParticleBasicMaterial(parameters) {
		console.warn('THREE.ParticleBasicMaterial has been renamed to THREE.PointsMaterial.');
		return new PointsMaterial(parameters);
	}
	function ParticleSystemMaterial(parameters) {
		console.warn('THREE.ParticleSystemMaterial has been renamed to THREE.PointsMaterial.');
		return new PointsMaterial(parameters);
	}
	function Vertex(x, y, z) {
		console.warn('THREE.Vertex has been removed. Use THREE.Vector3 instead.');
		return new Vector3(x, y, z);
	} //

	function DynamicBufferAttribute(array, itemSize) {
		console.warn('THREE.DynamicBufferAttribute has been removed. Use new THREE.BufferAttribute().setUsage( THREE.DynamicDrawUsage ) instead.');
		return new BufferAttribute(array, itemSize).setUsage(DynamicDrawUsage);
	}
	function Int8Attribute(array, itemSize) {
		console.warn('THREE.Int8Attribute has been removed. Use new THREE.Int8BufferAttribute() instead.');
		return new Int8BufferAttribute(array, itemSize);
	}
	function Uint8Attribute(array, itemSize) {
		console.warn('THREE.Uint8Attribute has been removed. Use new THREE.Uint8BufferAttribute() instead.');
		return new Uint8BufferAttribute(array, itemSize);
	}
	function Uint8ClampedAttribute(array, itemSize) {
		console.warn('THREE.Uint8ClampedAttribute has been removed. Use new THREE.Uint8ClampedBufferAttribute() instead.');
		return new Uint8ClampedBufferAttribute(array, itemSize);
	}
	function Int16Attribute(array, itemSize) {
		console.warn('THREE.Int16Attribute has been removed. Use new THREE.Int16BufferAttribute() instead.');
		return new Int16BufferAttribute(array, itemSize);
	}
	function Uint16Attribute(array, itemSize) {
		console.warn('THREE.Uint16Attribute has been removed. Use new THREE.Uint16BufferAttribute() instead.');
		return new Uint16BufferAttribute(array, itemSize);
	}
	function Int32Attribute(array, itemSize) {
		console.warn('THREE.Int32Attribute has been removed. Use new THREE.Int32BufferAttribute() instead.');
		return new Int32BufferAttribute(array, itemSize);
	}
	function Uint32Attribute(array, itemSize) {
		console.warn('THREE.Uint32Attribute has been removed. Use new THREE.Uint32BufferAttribute() instead.');
		return new Uint32BufferAttribute(array, itemSize);
	}
	function Float32Attribute(array, itemSize) {
		console.warn('THREE.Float32Attribute has been removed. Use new THREE.Float32BufferAttribute() instead.');
		return new Float32BufferAttribute(array, itemSize);
	}
	function Float64Attribute(array, itemSize) {
		console.warn('THREE.Float64Attribute has been removed. Use new THREE.Float64BufferAttribute() instead.');
		return new Float64BufferAttribute(array, itemSize);
	} //

	Curve.create = function (construct, getPoint) {
		console.log('THREE.Curve.create() has been deprecated');
		construct.prototype = Object.create(Curve.prototype);
		construct.prototype.constructor = construct;
		construct.prototype.getPoint = getPoint;
		return construct;
	}; //


	Path.prototype.fromPoints = function (points) {
		console.warn('THREE.Path: .fromPoints() has been renamed to .setFromPoints().');
		return this.setFromPoints(points);
	}; //


	function AxisHelper(size) {
		console.warn('THREE.AxisHelper has been renamed to THREE.AxesHelper.');
		return new AxesHelper(size);
	}
	function BoundingBoxHelper(object, color) {
		console.warn('THREE.BoundingBoxHelper has been deprecated. Creating a THREE.BoxHelper instead.');
		return new BoxHelper(object, color);
	}
	function EdgesHelper(object, hex) {
		console.warn('THREE.EdgesHelper has been removed. Use THREE.EdgesGeometry instead.');
		return new LineSegments(new EdgesGeometry(object.geometry), new LineBasicMaterial({
			color: hex !== undefined ? hex : 0xffffff
		}));
	}

	GridHelper.prototype.setColors = function () {
		console.error('THREE.GridHelper: setColors() has been deprecated, pass them in the constructor instead.');
	};

	SkeletonHelper.prototype.update = function () {
		console.error('THREE.SkeletonHelper: update() no longer needs to be called.');
	};

	function WireframeHelper(object, hex) {
		console.warn('THREE.WireframeHelper has been removed. Use THREE.WireframeGeometry instead.');
		return new LineSegments(new WireframeGeometry(object.geometry), new LineBasicMaterial({
			color: hex !== undefined ? hex : 0xffffff
		}));
	} //

	Loader.prototype.extractUrlBase = function (url) {
		console.warn('THREE.Loader: .extractUrlBase() has been deprecated. Use THREE.LoaderUtils.extractUrlBase() instead.');
		return LoaderUtils.extractUrlBase(url);
	};

	Loader.Handlers = {
		add: function () {
			console.error('THREE.Loader: Handlers.add() has been removed. Use LoadingManager.addHandler() instead.');
		},
		get: function () {
			console.error('THREE.Loader: Handlers.get() has been removed. Use LoadingManager.getHandler() instead.');
		}
	};
	function XHRLoader(manager) {
		console.warn('THREE.XHRLoader has been renamed to THREE.FileLoader.');
		return new FileLoader(manager);
	}
	function BinaryTextureLoader(manager) {
		console.warn('THREE.BinaryTextureLoader has been renamed to THREE.DataTextureLoader.');
		return new DataTextureLoader(manager);
	} //

	Box2.prototype.center = function (optionalTarget) {
		console.warn('THREE.Box2: .center() has been renamed to .getCenter().');
		return this.getCenter(optionalTarget);
	};

	Box2.prototype.empty = function () {
		console.warn('THREE.Box2: .empty() has been renamed to .isEmpty().');
		return this.isEmpty();
	};

	Box2.prototype.isIntersectionBox = function (box) {
		console.warn('THREE.Box2: .isIntersectionBox() has been renamed to .intersectsBox().');
		return this.intersectsBox(box);
	};

	Box2.prototype.size = function (optionalTarget) {
		console.warn('THREE.Box2: .size() has been renamed to .getSize().');
		return this.getSize(optionalTarget);
	}; //


	Box3.prototype.center = function (optionalTarget) {
		console.warn('THREE.Box3: .center() has been renamed to .getCenter().');
		return this.getCenter(optionalTarget);
	};

	Box3.prototype.empty = function () {
		console.warn('THREE.Box3: .empty() has been renamed to .isEmpty().');
		return this.isEmpty();
	};

	Box3.prototype.isIntersectionBox = function (box) {
		console.warn('THREE.Box3: .isIntersectionBox() has been renamed to .intersectsBox().');
		return this.intersectsBox(box);
	};

	Box3.prototype.isIntersectionSphere = function (sphere) {
		console.warn('THREE.Box3: .isIntersectionSphere() has been renamed to .intersectsSphere().');
		return this.intersectsSphere(sphere);
	};

	Box3.prototype.size = function (optionalTarget) {
		console.warn('THREE.Box3: .size() has been renamed to .getSize().');
		return this.getSize(optionalTarget);
	}; //


	Sphere.prototype.empty = function () {
		console.warn('THREE.Sphere: .empty() has been renamed to .isEmpty().');
		return this.isEmpty();
	}; //


	Frustum.prototype.setFromMatrix = function (m) {
		console.warn('THREE.Frustum: .setFromMatrix() has been renamed to .setFromProjectionMatrix().');
		return this.setFromProjectionMatrix(m);
	}; //


	Line3.prototype.center = function (optionalTarget) {
		console.warn('THREE.Line3: .center() has been renamed to .getCenter().');
		return this.getCenter(optionalTarget);
	}; //


	Matrix3.prototype.flattenToArrayOffset = function (array, offset) {
		console.warn('THREE.Matrix3: .flattenToArrayOffset() has been deprecated. Use .toArray() instead.');
		return this.toArray(array, offset);
	};

	Matrix3.prototype.multiplyVector3 = function (vector) {
		console.warn('THREE.Matrix3: .multiplyVector3() has been removed. Use vector.applyMatrix3( matrix ) instead.');
		return vector.applyMatrix3(this);
	};

	Matrix3.prototype.multiplyVector3Array = function () {
		console.error('THREE.Matrix3: .multiplyVector3Array() has been removed.');
	};

	Matrix3.prototype.applyToBufferAttribute = function (attribute) {
		console.warn('THREE.Matrix3: .applyToBufferAttribute() has been removed. Use attribute.applyMatrix3( matrix ) instead.');
		return attribute.applyMatrix3(this);
	};

	Matrix3.prototype.applyToVector3Array = function () {
		console.error('THREE.Matrix3: .applyToVector3Array() has been removed.');
	};

	Matrix3.prototype.getInverse = function (matrix) {
		console.warn('THREE.Matrix3: .getInverse() has been removed. Use matrixInv.copy( matrix ).invert(); instead.');
		return this.copy(matrix).invert();
	}; //


	Matrix4.prototype.extractPosition = function (m) {
		console.warn('THREE.Matrix4: .extractPosition() has been renamed to .copyPosition().');
		return this.copyPosition(m);
	};

	Matrix4.prototype.flattenToArrayOffset = function (array, offset) {
		console.warn('THREE.Matrix4: .flattenToArrayOffset() has been deprecated. Use .toArray() instead.');
		return this.toArray(array, offset);
	};

	Matrix4.prototype.getPosition = function () {
		console.warn('THREE.Matrix4: .getPosition() has been removed. Use Vector3.setFromMatrixPosition( matrix ) instead.');
		return new Vector3().setFromMatrixColumn(this, 3);
	};

	Matrix4.prototype.setRotationFromQuaternion = function (q) {
		console.warn('THREE.Matrix4: .setRotationFromQuaternion() has been renamed to .makeRotationFromQuaternion().');
		return this.makeRotationFromQuaternion(q);
	};

	Matrix4.prototype.multiplyToArray = function () {
		console.warn('THREE.Matrix4: .multiplyToArray() has been removed.');
	};

	Matrix4.prototype.multiplyVector3 = function (vector) {
		console.warn('THREE.Matrix4: .multiplyVector3() has been removed. Use vector.applyMatrix4( matrix ) instead.');
		return vector.applyMatrix4(this);
	};

	Matrix4.prototype.multiplyVector4 = function (vector) {
		console.warn('THREE.Matrix4: .multiplyVector4() has been removed. Use vector.applyMatrix4( matrix ) instead.');
		return vector.applyMatrix4(this);
	};

	Matrix4.prototype.multiplyVector3Array = function () {
		console.error('THREE.Matrix4: .multiplyVector3Array() has been removed.');
	};

	Matrix4.prototype.rotateAxis = function (v) {
		console.warn('THREE.Matrix4: .rotateAxis() has been removed. Use Vector3.transformDirection( matrix ) instead.');
		v.transformDirection(this);
	};

	Matrix4.prototype.crossVector = function (vector) {
		console.warn('THREE.Matrix4: .crossVector() has been removed. Use vector.applyMatrix4( matrix ) instead.');
		return vector.applyMatrix4(this);
	};

	Matrix4.prototype.translate = function () {
		console.error('THREE.Matrix4: .translate() has been removed.');
	};

	Matrix4.prototype.rotateX = function () {
		console.error('THREE.Matrix4: .rotateX() has been removed.');
	};

	Matrix4.prototype.rotateY = function () {
		console.error('THREE.Matrix4: .rotateY() has been removed.');
	};

	Matrix4.prototype.rotateZ = function () {
		console.error('THREE.Matrix4: .rotateZ() has been removed.');
	};

	Matrix4.prototype.rotateByAxis = function () {
		console.error('THREE.Matrix4: .rotateByAxis() has been removed.');
	};

	Matrix4.prototype.applyToBufferAttribute = function (attribute) {
		console.warn('THREE.Matrix4: .applyToBufferAttribute() has been removed. Use attribute.applyMatrix4( matrix ) instead.');
		return attribute.applyMatrix4(this);
	};

	Matrix4.prototype.applyToVector3Array = function () {
		console.error('THREE.Matrix4: .applyToVector3Array() has been removed.');
	};

	Matrix4.prototype.makeFrustum = function (left, right, bottom, top, near, far) {
		console.warn('THREE.Matrix4: .makeFrustum() has been removed. Use .makePerspective( left, right, top, bottom, near, far ) instead.');
		return this.makePerspective(left, right, top, bottom, near, far);
	};

	Matrix4.prototype.getInverse = function (matrix) {
		console.warn('THREE.Matrix4: .getInverse() has been removed. Use matrixInv.copy( matrix ).invert(); instead.');
		return this.copy(matrix).invert();
	}; //


	Plane.prototype.isIntersectionLine = function (line) {
		console.warn('THREE.Plane: .isIntersectionLine() has been renamed to .intersectsLine().');
		return this.intersectsLine(line);
	}; //


	Quaternion.prototype.multiplyVector3 = function (vector) {
		console.warn('THREE.Quaternion: .multiplyVector3() has been removed. Use is now vector.applyQuaternion( quaternion ) instead.');
		return vector.applyQuaternion(this);
	};

	Quaternion.prototype.inverse = function () {
		console.warn('THREE.Quaternion: .inverse() has been renamed to invert().');
		return this.invert();
	}; //


	Ray.prototype.isIntersectionBox = function (box) {
		console.warn('THREE.Ray: .isIntersectionBox() has been renamed to .intersectsBox().');
		return this.intersectsBox(box);
	};

	Ray.prototype.isIntersectionPlane = function (plane) {
		console.warn('THREE.Ray: .isIntersectionPlane() has been renamed to .intersectsPlane().');
		return this.intersectsPlane(plane);
	};

	Ray.prototype.isIntersectionSphere = function (sphere) {
		console.warn('THREE.Ray: .isIntersectionSphere() has been renamed to .intersectsSphere().');
		return this.intersectsSphere(sphere);
	}; //


	Triangle.prototype.area = function () {
		console.warn('THREE.Triangle: .area() has been renamed to .getArea().');
		return this.getArea();
	};

	Triangle.prototype.barycoordFromPoint = function (point, target) {
		console.warn('THREE.Triangle: .barycoordFromPoint() has been renamed to .getBarycoord().');
		return this.getBarycoord(point, target);
	};

	Triangle.prototype.midpoint = function (target) {
		console.warn('THREE.Triangle: .midpoint() has been renamed to .getMidpoint().');
		return this.getMidpoint(target);
	};

	Triangle.prototypenormal = function (target) {
		console.warn('THREE.Triangle: .normal() has been renamed to .getNormal().');
		return this.getNormal(target);
	};

	Triangle.prototype.plane = function (target) {
		console.warn('THREE.Triangle: .plane() has been renamed to .getPlane().');
		return this.getPlane(target);
	};

	Triangle.barycoordFromPoint = function (point, a, b, c, target) {
		console.warn('THREE.Triangle: .barycoordFromPoint() has been renamed to .getBarycoord().');
		return Triangle.getBarycoord(point, a, b, c, target);
	};

	Triangle.normal = function (a, b, c, target) {
		console.warn('THREE.Triangle: .normal() has been renamed to .getNormal().');
		return Triangle.getNormal(a, b, c, target);
	}; //


	Shape.prototype.extractAllPoints = function (divisions) {
		console.warn('THREE.Shape: .extractAllPoints() has been removed. Use .extractPoints() instead.');
		return this.extractPoints(divisions);
	};

	Shape.prototype.extrude = function (options) {
		console.warn('THREE.Shape: .extrude() has been removed. Use ExtrudeGeometry() instead.');
		return new ExtrudeGeometry(this, options);
	};

	Shape.prototype.makeGeometry = function (options) {
		console.warn('THREE.Shape: .makeGeometry() has been removed. Use ShapeGeometry() instead.');
		return new ShapeGeometry(this, options);
	}; //


	Vector2.prototype.fromAttribute = function (attribute, index, offset) {
		console.warn('THREE.Vector2: .fromAttribute() has been renamed to .fromBufferAttribute().');
		return this.fromBufferAttribute(attribute, index, offset);
	};

	Vector2.prototype.distanceToManhattan = function (v) {
		console.warn('THREE.Vector2: .distanceToManhattan() has been renamed to .manhattanDistanceTo().');
		return this.manhattanDistanceTo(v);
	};

	Vector2.prototype.lengthManhattan = function () {
		console.warn('THREE.Vector2: .lengthManhattan() has been renamed to .manhattanLength().');
		return this.manhattanLength();
	}; //


	Vector3.prototype.setEulerFromRotationMatrix = function () {
		console.error('THREE.Vector3: .setEulerFromRotationMatrix() has been removed. Use Euler.setFromRotationMatrix() instead.');
	};

	Vector3.prototype.setEulerFromQuaternion = function () {
		console.error('THREE.Vector3: .setEulerFromQuaternion() has been removed. Use Euler.setFromQuaternion() instead.');
	};

	Vector3.prototype.getPositionFromMatrix = function (m) {
		console.warn('THREE.Vector3: .getPositionFromMatrix() has been renamed to .setFromMatrixPosition().');
		return this.setFromMatrixPosition(m);
	};

	Vector3.prototype.getScaleFromMatrix = function (m) {
		console.warn('THREE.Vector3: .getScaleFromMatrix() has been renamed to .setFromMatrixScale().');
		return this.setFromMatrixScale(m);
	};

	Vector3.prototype.getColumnFromMatrix = function (index, matrix) {
		console.warn('THREE.Vector3: .getColumnFromMatrix() has been renamed to .setFromMatrixColumn().');
		return this.setFromMatrixColumn(matrix, index);
	};

	Vector3.prototype.applyProjection = function (m) {
		console.warn('THREE.Vector3: .applyProjection() has been removed. Use .applyMatrix4( m ) instead.');
		return this.applyMatrix4(m);
	};

	Vector3.prototype.fromAttribute = function (attribute, index, offset) {
		console.warn('THREE.Vector3: .fromAttribute() has been renamed to .fromBufferAttribute().');
		return this.fromBufferAttribute(attribute, index, offset);
	};

	Vector3.prototype.distanceToManhattan = function (v) {
		console.warn('THREE.Vector3: .distanceToManhattan() has been renamed to .manhattanDistanceTo().');
		return this.manhattanDistanceTo(v);
	};

	Vector3.prototype.lengthManhattan = function () {
		console.warn('THREE.Vector3: .lengthManhattan() has been renamed to .manhattanLength().');
		return this.manhattanLength();
	}; //


	Vector4.prototype.fromAttribute = function (attribute, index, offset) {
		console.warn('THREE.Vector4: .fromAttribute() has been renamed to .fromBufferAttribute().');
		return this.fromBufferAttribute(attribute, index, offset);
	};

	Vector4.prototype.lengthManhattan = function () {
		console.warn('THREE.Vector4: .lengthManhattan() has been renamed to .manhattanLength().');
		return this.manhattanLength();
	}; //


	Object3D.prototype.getChildByName = function (name) {
		console.warn('THREE.Object3D: .getChildByName() has been renamed to .getObjectByName().');
		return this.getObjectByName(name);
	};

	Object3D.prototype.renderDepth = function () {
		console.warn('THREE.Object3D: .renderDepth has been removed. Use .renderOrder, instead.');
	};

	Object3D.prototype.translate = function (distance, axis) {
		console.warn('THREE.Object3D: .translate() has been removed. Use .translateOnAxis( axis, distance ) instead.');
		return this.translateOnAxis(axis, distance);
	};

	Object3D.prototype.getWorldRotation = function () {
		console.error('THREE.Object3D: .getWorldRotation() has been removed. Use THREE.Object3D.getWorldQuaternion( target ) instead.');
	};

	Object3D.prototype.applyMatrix = function (matrix) {
		console.warn('THREE.Object3D: .applyMatrix() has been renamed to .applyMatrix4().');
		return this.applyMatrix4(matrix);
	};

	Object.defineProperties(Object3D.prototype, {
		eulerOrder: {
			get: function () {
				console.warn('THREE.Object3D: .eulerOrder is now .rotation.order.');
				return this.rotation.order;
			},
			set: function (value) {
				console.warn('THREE.Object3D: .eulerOrder is now .rotation.order.');
				this.rotation.order = value;
			}
		},
		useQuaternion: {
			get: function () {
				console.warn('THREE.Object3D: .useQuaternion has been removed. The library now uses quaternions by default.');
			},
			set: function () {
				console.warn('THREE.Object3D: .useQuaternion has been removed. The library now uses quaternions by default.');
			}
		}
	});

	Mesh.prototype.setDrawMode = function () {
		console.error('THREE.Mesh: .setDrawMode() has been removed. The renderer now always assumes THREE.TrianglesDrawMode. Transform your geometry via BufferGeometryUtils.toTrianglesDrawMode() if necessary.');
	};

	Object.defineProperties(Mesh.prototype, {
		drawMode: {
			get: function () {
				console.error('THREE.Mesh: .drawMode has been removed. The renderer now always assumes THREE.TrianglesDrawMode.');
				return TrianglesDrawMode;
			},
			set: function () {
				console.error('THREE.Mesh: .drawMode has been removed. The renderer now always assumes THREE.TrianglesDrawMode. Transform your geometry via BufferGeometryUtils.toTrianglesDrawMode() if necessary.');
			}
		}
	});

	SkinnedMesh.prototype.initBones = function () {
		console.error('THREE.SkinnedMesh: initBones() has been removed.');
	}; //


	PerspectiveCamera.prototype.setLens = function (focalLength, filmGauge) {
		console.warn('THREE.PerspectiveCamera.setLens is deprecated. ' + 'Use .setFocalLength and .filmGauge for a photographic setup.');
		if (filmGauge !== undefined) this.filmGauge = filmGauge;
		this.setFocalLength(focalLength);
	}; //


	Object.defineProperties(Light.prototype, {
		onlyShadow: {
			set: function () {
				console.warn('THREE.Light: .onlyShadow has been removed.');
			}
		},
		shadowCameraFov: {
			set: function (value) {
				console.warn('THREE.Light: .shadowCameraFov is now .shadow.camera.fov.');
				this.shadow.camera.fov = value;
			}
		},
		shadowCameraLeft: {
			set: function (value) {
				console.warn('THREE.Light: .shadowCameraLeft is now .shadow.camera.left.');
				this.shadow.camera.left = value;
			}
		},
		shadowCameraRight: {
			set: function (value) {
				console.warn('THREE.Light: .shadowCameraRight is now .shadow.camera.right.');
				this.shadow.camera.right = value;
			}
		},
		shadowCameraTop: {
			set: function (value) {
				console.warn('THREE.Light: .shadowCameraTop is now .shadow.camera.top.');
				this.shadow.camera.top = value;
			}
		},
		shadowCameraBottom: {
			set: function (value) {
				console.warn('THREE.Light: .shadowCameraBottom is now .shadow.camera.bottom.');
				this.shadow.camera.bottom = value;
			}
		},
		shadowCameraNear: {
			set: function (value) {
				console.warn('THREE.Light: .shadowCameraNear is now .shadow.camera.near.');
				this.shadow.camera.near = value;
			}
		},
		shadowCameraFar: {
			set: function (value) {
				console.warn('THREE.Light: .shadowCameraFar is now .shadow.camera.far.');
				this.shadow.camera.far = value;
			}
		},
		shadowCameraVisible: {
			set: function () {
				console.warn('THREE.Light: .shadowCameraVisible has been removed. Use new THREE.CameraHelper( light.shadow.camera ) instead.');
			}
		},
		shadowBias: {
			set: function (value) {
				console.warn('THREE.Light: .shadowBias is now .shadow.bias.');
				this.shadow.bias = value;
			}
		},
		shadowDarkness: {
			set: function () {
				console.warn('THREE.Light: .shadowDarkness has been removed.');
			}
		},
		shadowMapWidth: {
			set: function (value) {
				console.warn('THREE.Light: .shadowMapWidth is now .shadow.mapSize.width.');
				this.shadow.mapSize.width = value;
			}
		},
		shadowMapHeight: {
			set: function (value) {
				console.warn('THREE.Light: .shadowMapHeight is now .shadow.mapSize.height.');
				this.shadow.mapSize.height = value;
			}
		}
	}); //

	Object.defineProperties(BufferAttribute.prototype, {
		length: {
			get: function () {
				console.warn('THREE.BufferAttribute: .length has been deprecated. Use .count instead.');
				return this.array.length;
			}
		},
		dynamic: {
			get: function () {
				console.warn('THREE.BufferAttribute: .dynamic has been deprecated. Use .usage instead.');
				return this.usage === DynamicDrawUsage;
			},
			set: function () {
				console.warn('THREE.BufferAttribute: .dynamic has been deprecated. Use .usage instead.');
				this.setUsage(DynamicDrawUsage);
			}
		}
	});

	BufferAttribute.prototype.setDynamic = function (value) {
		console.warn('THREE.BufferAttribute: .setDynamic() has been deprecated. Use .setUsage() instead.');
		this.setUsage(value === true ? DynamicDrawUsage : StaticDrawUsage);
		return this;
	};

	BufferAttribute.prototype.copyIndicesArray = function () {
		console.error('THREE.BufferAttribute: .copyIndicesArray() has been removed.');
	}, BufferAttribute.prototype.setArray = function () {
		console.error('THREE.BufferAttribute: .setArray has been removed. Use BufferGeometry .setAttribute to replace/resize attribute buffers');
	}; //

	BufferGeometry.prototype.addIndex = function (index) {
		console.warn('THREE.BufferGeometry: .addIndex() has been renamed to .setIndex().');
		this.setIndex(index);
	};

	BufferGeometry.prototype.addAttribute = function (name, attribute) {
		console.warn('THREE.BufferGeometry: .addAttribute() has been renamed to .setAttribute().');

		if (!(attribute && attribute.isBufferAttribute) && !(attribute && attribute.isInterleavedBufferAttribute)) {
			console.warn('THREE.BufferGeometry: .addAttribute() now expects ( name, attribute ).');
			return this.setAttribute(name, new BufferAttribute(arguments[1], arguments[2]));
		}

		if (name === 'index') {
			console.warn('THREE.BufferGeometry.addAttribute: Use .setIndex() for index attribute.');
			this.setIndex(attribute);
			return this;
		}

		return this.setAttribute(name, attribute);
	};

	BufferGeometry.prototype.addDrawCall = function (start, count, indexOffset) {
		if (indexOffset !== undefined) {
			console.warn('THREE.BufferGeometry: .addDrawCall() no longer supports indexOffset.');
		}

		console.warn('THREE.BufferGeometry: .addDrawCall() is now .addGroup().');
		this.addGroup(start, count);
	};

	BufferGeometry.prototype.clearDrawCalls = function () {
		console.warn('THREE.BufferGeometry: .clearDrawCalls() is now .clearGroups().');
		this.clearGroups();
	};

	BufferGeometry.prototype.computeOffsets = function () {
		console.warn('THREE.BufferGeometry: .computeOffsets() has been removed.');
	};

	BufferGeometry.prototype.removeAttribute = function (name) {
		console.warn('THREE.BufferGeometry: .removeAttribute() has been renamed to .deleteAttribute().');
		return this.deleteAttribute(name);
	};

	BufferGeometry.prototype.applyMatrix = function (matrix) {
		console.warn('THREE.BufferGeometry: .applyMatrix() has been renamed to .applyMatrix4().');
		return this.applyMatrix4(matrix);
	};

	Object.defineProperties(BufferGeometry.prototype, {
		drawcalls: {
			get: function () {
				console.error('THREE.BufferGeometry: .drawcalls has been renamed to .groups.');
				return this.groups;
			}
		},
		offsets: {
			get: function () {
				console.warn('THREE.BufferGeometry: .offsets has been renamed to .groups.');
				return this.groups;
			}
		}
	});

	InterleavedBuffer.prototype.setDynamic = function (value) {
		console.warn('THREE.InterleavedBuffer: .setDynamic() has been deprecated. Use .setUsage() instead.');
		this.setUsage(value === true ? DynamicDrawUsage : StaticDrawUsage);
		return this;
	};

	InterleavedBuffer.prototype.setArray = function () {
		console.error('THREE.InterleavedBuffer: .setArray has been removed. Use BufferGeometry .setAttribute to replace/resize attribute buffers');
	}; //


	ExtrudeGeometry.prototype.getArrays = function () {
		console.error('THREE.ExtrudeGeometry: .getArrays() has been removed.');
	};

	ExtrudeGeometry.prototype.addShapeList = function () {
		console.error('THREE.ExtrudeGeometry: .addShapeList() has been removed.');
	};

	ExtrudeGeometry.prototype.addShape = function () {
		console.error('THREE.ExtrudeGeometry: .addShape() has been removed.');
	}; //


	Scene.prototype.dispose = function () {
		console.error('THREE.Scene: .dispose() has been removed.');
	}; //


	Uniform.prototype.onUpdate = function () {
		console.warn('THREE.Uniform: .onUpdate() has been removed. Use object.onBeforeRender() instead.');
		return this;
	}; //


	Object.defineProperties(Material.prototype, {
		wrapAround: {
			get: function () {
				console.warn('THREE.Material: .wrapAround has been removed.');
			},
			set: function () {
				console.warn('THREE.Material: .wrapAround has been removed.');
			}
		},
		overdraw: {
			get: function () {
				console.warn('THREE.Material: .overdraw has been removed.');
			},
			set: function () {
				console.warn('THREE.Material: .overdraw has been removed.');
			}
		},
		wrapRGB: {
			get: function () {
				console.warn('THREE.Material: .wrapRGB has been removed.');
				return new Color();
			}
		},
		shading: {
			get: function () {
				console.error('THREE.' + this.type + ': .shading has been removed. Use the boolean .flatShading instead.');
			},
			set: function (value) {
				console.warn('THREE.' + this.type + ': .shading has been removed. Use the boolean .flatShading instead.');
				this.flatShading = value === FlatShading;
			}
		},
		stencilMask: {
			get: function () {
				console.warn('THREE.' + this.type + ': .stencilMask has been removed. Use .stencilFuncMask instead.');
				return this.stencilFuncMask;
			},
			set: function (value) {
				console.warn('THREE.' + this.type + ': .stencilMask has been removed. Use .stencilFuncMask instead.');
				this.stencilFuncMask = value;
			}
		},
		vertexTangents: {
			get: function () {
				console.warn('THREE.' + this.type + ': .vertexTangents has been removed.');
			},
			set: function () {
				console.warn('THREE.' + this.type + ': .vertexTangents has been removed.');
			}
		}
	});
	Object.defineProperties(ShaderMaterial.prototype, {
		derivatives: {
			get: function () {
				console.warn('THREE.ShaderMaterial: .derivatives has been moved to .extensions.derivatives.');
				return this.extensions.derivatives;
			},
			set: function (value) {
				console.warn('THREE. ShaderMaterial: .derivatives has been moved to .extensions.derivatives.');
				this.extensions.derivatives = value;
			}
		}
	}); //

	WebGLRenderer.prototype.clearTarget = function (renderTarget, color, depth, stencil) {
		console.warn('THREE.WebGLRenderer: .clearTarget() has been deprecated. Use .setRenderTarget() and .clear() instead.');
		this.setRenderTarget(renderTarget);
		this.clear(color, depth, stencil);
	};

	WebGLRenderer.prototype.animate = function (callback) {
		console.warn('THREE.WebGLRenderer: .animate() is now .setAnimationLoop().');
		this.setAnimationLoop(callback);
	};

	WebGLRenderer.prototype.getCurrentRenderTarget = function () {
		console.warn('THREE.WebGLRenderer: .getCurrentRenderTarget() is now .getRenderTarget().');
		return this.getRenderTarget();
	};

	WebGLRenderer.prototype.getMaxAnisotropy = function () {
		console.warn('THREE.WebGLRenderer: .getMaxAnisotropy() is now .capabilities.getMaxAnisotropy().');
		return this.capabilities.getMaxAnisotropy();
	};

	WebGLRenderer.prototype.getPrecision = function () {
		console.warn('THREE.WebGLRenderer: .getPrecision() is now .capabilities.precision.');
		return this.capabilities.precision;
	};

	WebGLRenderer.prototype.resetGLState = function () {
		console.warn('THREE.WebGLRenderer: .resetGLState() is now .state.reset().');
		return this.state.reset();
	};

	WebGLRenderer.prototype.supportsFloatTextures = function () {
		console.warn('THREE.WebGLRenderer: .supportsFloatTextures() is now .extensions.get( \'OES_texture_float\' ).');
		return this.extensions.get('OES_texture_float');
	};

	WebGLRenderer.prototype.supportsHalfFloatTextures = function () {
		console.warn('THREE.WebGLRenderer: .supportsHalfFloatTextures() is now .extensions.get( \'OES_texture_half_float\' ).');
		return this.extensions.get('OES_texture_half_float');
	};

	WebGLRenderer.prototype.supportsStandardDerivatives = function () {
		console.warn('THREE.WebGLRenderer: .supportsStandardDerivatives() is now .extensions.get( \'OES_standard_derivatives\' ).');
		return this.extensions.get('OES_standard_derivatives');
	};

	WebGLRenderer.prototype.supportsCompressedTextureS3TC = function () {
		console.warn('THREE.WebGLRenderer: .supportsCompressedTextureS3TC() is now .extensions.get( \'WEBGL_compressed_texture_s3tc\' ).');
		return this.extensions.get('WEBGL_compressed_texture_s3tc');
	};

	WebGLRenderer.prototype.supportsCompressedTexturePVRTC = function () {
		console.warn('THREE.WebGLRenderer: .supportsCompressedTexturePVRTC() is now .extensions.get( \'WEBGL_compressed_texture_pvrtc\' ).');
		return this.extensions.get('WEBGL_compressed_texture_pvrtc');
	};

	WebGLRenderer.prototype.supportsBlendMinMax = function () {
		console.warn('THREE.WebGLRenderer: .supportsBlendMinMax() is now .extensions.get( \'EXT_blend_minmax\' ).');
		return this.extensions.get('EXT_blend_minmax');
	};

	WebGLRenderer.prototype.supportsVertexTextures = function () {
		console.warn('THREE.WebGLRenderer: .supportsVertexTextures() is now .capabilities.vertexTextures.');
		return this.capabilities.vertexTextures;
	};

	WebGLRenderer.prototype.supportsInstancedArrays = function () {
		console.warn('THREE.WebGLRenderer: .supportsInstancedArrays() is now .extensions.get( \'ANGLE_instanced_arrays\' ).');
		return this.extensions.get('ANGLE_instanced_arrays');
	};

	WebGLRenderer.prototype.enableScissorTest = function (boolean) {
		console.warn('THREE.WebGLRenderer: .enableScissorTest() is now .setScissorTest().');
		this.setScissorTest(boolean);
	};

	WebGLRenderer.prototype.initMaterial = function () {
		console.warn('THREE.WebGLRenderer: .initMaterial() has been removed.');
	};

	WebGLRenderer.prototype.addPrePlugin = function () {
		console.warn('THREE.WebGLRenderer: .addPrePlugin() has been removed.');
	};

	WebGLRenderer.prototype.addPostPlugin = function () {
		console.warn('THREE.WebGLRenderer: .addPostPlugin() has been removed.');
	};

	WebGLRenderer.prototype.updateShadowMap = function () {
		console.warn('THREE.WebGLRenderer: .updateShadowMap() has been removed.');
	};

	WebGLRenderer.prototype.setFaceCulling = function () {
		console.warn('THREE.WebGLRenderer: .setFaceCulling() has been removed.');
	};

	WebGLRenderer.prototype.setTexture = function () {
		console.warn('THREE.WebGLRenderer: .setTexture() has been removed.');
	};

	WebGLRenderer.prototype.setTextureCube = function () {
		console.warn('THREE.WebGLRenderer: .setTextureCube() has been removed.');
	};

	WebGLRenderer.prototype.getActiveMipMapLevel = function () {
		console.warn('THREE.WebGLRenderer: .getActiveMipMapLevel() is now .getActiveMipmapLevel().');
		return this.getActiveMipmapLevel();
	};

	Object.defineProperties(WebGLRenderer.prototype, {
		shadowMapEnabled: {
			get: function () {
				return this.shadowMap.enabled;
			},
			set: function (value) {
				console.warn('THREE.WebGLRenderer: .shadowMapEnabled is now .shadowMap.enabled.');
				this.shadowMap.enabled = value;
			}
		},
		shadowMapType: {
			get: function () {
				return this.shadowMap.type;
			},
			set: function (value) {
				console.warn('THREE.WebGLRenderer: .shadowMapType is now .shadowMap.type.');
				this.shadowMap.type = value;
			}
		},
		shadowMapCullFace: {
			get: function () {
				console.warn('THREE.WebGLRenderer: .shadowMapCullFace has been removed. Set Material.shadowSide instead.');
				return undefined;
			},
			set: function () {
				console.warn('THREE.WebGLRenderer: .shadowMapCullFace has been removed. Set Material.shadowSide instead.');
			}
		},
		context: {
			get: function () {
				console.warn('THREE.WebGLRenderer: .context has been removed. Use .getContext() instead.');
				return this.getContext();
			}
		},
		vr: {
			get: function () {
				console.warn('THREE.WebGLRenderer: .vr has been renamed to .xr');
				return this.xr;
			}
		},
		gammaInput: {
			get: function () {
				console.warn('THREE.WebGLRenderer: .gammaInput has been removed. Set the encoding for textures via Texture.encoding instead.');
				return false;
			},
			set: function () {
				console.warn('THREE.WebGLRenderer: .gammaInput has been removed. Set the encoding for textures via Texture.encoding instead.');
			}
		},
		gammaOutput: {
			get: function () {
				console.warn('THREE.WebGLRenderer: .gammaOutput has been removed. Set WebGLRenderer.outputEncoding instead.');
				return false;
			},
			set: function (value) {
				console.warn('THREE.WebGLRenderer: .gammaOutput has been removed. Set WebGLRenderer.outputEncoding instead.');
				this.outputEncoding = value === true ? sRGBEncoding : LinearEncoding;
			}
		},
		toneMappingWhitePoint: {
			get: function () {
				console.warn('THREE.WebGLRenderer: .toneMappingWhitePoint has been removed.');
				return 1.0;
			},
			set: function () {
				console.warn('THREE.WebGLRenderer: .toneMappingWhitePoint has been removed.');
			}
		}
	});
	Object.defineProperties(WebGLShadowMap.prototype, {
		cullFace: {
			get: function () {
				console.warn('THREE.WebGLRenderer: .shadowMap.cullFace has been removed. Set Material.shadowSide instead.');
				return undefined;
			},
			set: function () {
				console.warn('THREE.WebGLRenderer: .shadowMap.cullFace has been removed. Set Material.shadowSide instead.');
			}
		},
		renderReverseSided: {
			get: function () {
				console.warn('THREE.WebGLRenderer: .shadowMap.renderReverseSided has been removed. Set Material.shadowSide instead.');
				return undefined;
			},
			set: function () {
				console.warn('THREE.WebGLRenderer: .shadowMap.renderReverseSided has been removed. Set Material.shadowSide instead.');
			}
		},
		renderSingleSided: {
			get: function () {
				console.warn('THREE.WebGLRenderer: .shadowMap.renderSingleSided has been removed. Set Material.shadowSide instead.');
				return undefined;
			},
			set: function () {
				console.warn('THREE.WebGLRenderer: .shadowMap.renderSingleSided has been removed. Set Material.shadowSide instead.');
			}
		}
	});
	function WebGLRenderTargetCube(width, height, options) {
		console.warn('THREE.WebGLRenderTargetCube( width, height, options ) is now WebGLCubeRenderTarget( size, options ).');
		return new WebGLCubeRenderTarget(width, options);
	} //

	Object.defineProperties(WebGLRenderTarget.prototype, {
		wrapS: {
			get: function () {
				console.warn('THREE.WebGLRenderTarget: .wrapS is now .texture.wrapS.');
				return this.texture.wrapS;
			},
			set: function (value) {
				console.warn('THREE.WebGLRenderTarget: .wrapS is now .texture.wrapS.');
				this.texture.wrapS = value;
			}
		},
		wrapT: {
			get: function () {
				console.warn('THREE.WebGLRenderTarget: .wrapT is now .texture.wrapT.');
				return this.texture.wrapT;
			},
			set: function (value) {
				console.warn('THREE.WebGLRenderTarget: .wrapT is now .texture.wrapT.');
				this.texture.wrapT = value;
			}
		},
		magFilter: {
			get: function () {
				console.warn('THREE.WebGLRenderTarget: .magFilter is now .texture.magFilter.');
				return this.texture.magFilter;
			},
			set: function (value) {
				console.warn('THREE.WebGLRenderTarget: .magFilter is now .texture.magFilter.');
				this.texture.magFilter = value;
			}
		},
		minFilter: {
			get: function () {
				console.warn('THREE.WebGLRenderTarget: .minFilter is now .texture.minFilter.');
				return this.texture.minFilter;
			},
			set: function (value) {
				console.warn('THREE.WebGLRenderTarget: .minFilter is now .texture.minFilter.');
				this.texture.minFilter = value;
			}
		},
		anisotropy: {
			get: function () {
				console.warn('THREE.WebGLRenderTarget: .anisotropy is now .texture.anisotropy.');
				return this.texture.anisotropy;
			},
			set: function (value) {
				console.warn('THREE.WebGLRenderTarget: .anisotropy is now .texture.anisotropy.');
				this.texture.anisotropy = value;
			}
		},
		offset: {
			get: function () {
				console.warn('THREE.WebGLRenderTarget: .offset is now .texture.offset.');
				return this.texture.offset;
			},
			set: function (value) {
				console.warn('THREE.WebGLRenderTarget: .offset is now .texture.offset.');
				this.texture.offset = value;
			}
		},
		repeat: {
			get: function () {
				console.warn('THREE.WebGLRenderTarget: .repeat is now .texture.repeat.');
				return this.texture.repeat;
			},
			set: function (value) {
				console.warn('THREE.WebGLRenderTarget: .repeat is now .texture.repeat.');
				this.texture.repeat = value;
			}
		},
		format: {
			get: function () {
				console.warn('THREE.WebGLRenderTarget: .format is now .texture.format.');
				return this.texture.format;
			},
			set: function (value) {
				console.warn('THREE.WebGLRenderTarget: .format is now .texture.format.');
				this.texture.format = value;
			}
		},
		type: {
			get: function () {
				console.warn('THREE.WebGLRenderTarget: .type is now .texture.type.');
				return this.texture.type;
			},
			set: function (value) {
				console.warn('THREE.WebGLRenderTarget: .type is now .texture.type.');
				this.texture.type = value;
			}
		},
		generateMipmaps: {
			get: function () {
				console.warn('THREE.WebGLRenderTarget: .generateMipmaps is now .texture.generateMipmaps.');
				return this.texture.generateMipmaps;
			},
			set: function (value) {
				console.warn('THREE.WebGLRenderTarget: .generateMipmaps is now .texture.generateMipmaps.');
				this.texture.generateMipmaps = value;
			}
		}
	}); //

	Audio.prototype.load = function (file) {
		console.warn('THREE.Audio: .load has been deprecated. Use THREE.AudioLoader instead.');
		const scope = this;
		const audioLoader = new AudioLoader();
		audioLoader.load(file, function (buffer) {
			scope.setBuffer(buffer);
		});
		return this;
	};

	AudioAnalyser.prototype.getData = function () {
		console.warn('THREE.AudioAnalyser: .getData() is now .getFrequencyData().');
		return this.getFrequencyData();
	}; //


	CubeCamera.prototype.updateCubeMap = function (renderer, scene) {
		console.warn('THREE.CubeCamera: .updateCubeMap() is now .update().');
		return this.update(renderer, scene);
	};

	CubeCamera.prototype.clear = function (renderer, color, depth, stencil) {
		console.warn('THREE.CubeCamera: .clear() is now .renderTarget.clear().');
		return this.renderTarget.clear(renderer, color, depth, stencil);
	};

	ImageUtils.crossOrigin = undefined;

	ImageUtils.loadTexture = function (url, mapping, onLoad, onError) {
		console.warn('THREE.ImageUtils.loadTexture has been deprecated. Use THREE.TextureLoader() instead.');
		const loader = new TextureLoader();
		loader.setCrossOrigin(this.crossOrigin);
		const texture = loader.load(url, onLoad, undefined, onError);
		if (mapping) texture.mapping = mapping;
		return texture;
	};

	ImageUtils.loadTextureCube = function (urls, mapping, onLoad, onError) {
		console.warn('THREE.ImageUtils.loadTextureCube has been deprecated. Use THREE.CubeTextureLoader() instead.');
		const loader = new CubeTextureLoader();
		loader.setCrossOrigin(this.crossOrigin);
		const texture = loader.load(urls, onLoad, undefined, onError);
		if (mapping) texture.mapping = mapping;
		return texture;
	};

	ImageUtils.loadCompressedTexture = function () {
		console.error('THREE.ImageUtils.loadCompressedTexture has been removed. Use THREE.DDSLoader instead.');
	};

	ImageUtils.loadCompressedTextureCube = function () {
		console.error('THREE.ImageUtils.loadCompressedTextureCube has been removed. Use THREE.DDSLoader instead.');
	}; //


	function CanvasRenderer() {
		console.error('THREE.CanvasRenderer has been removed');
	} //

	function JSONLoader() {
		console.error('THREE.JSONLoader has been removed.');
	} //

	const SceneUtils = {
		createMultiMaterialObject: function () {
			console.error('THREE.SceneUtils has been moved to /examples/jsm/utils/SceneUtils.js');
		},
		detach: function () {
			console.error('THREE.SceneUtils has been moved to /examples/jsm/utils/SceneUtils.js');
		},
		attach: function () {
			console.error('THREE.SceneUtils has been moved to /examples/jsm/utils/SceneUtils.js');
		}
	}; //

	function LensFlare() {
		console.error('THREE.LensFlare has been moved to /examples/jsm/objects/Lensflare.js');
	} //

	function ParametricGeometry() {
		console.error('THREE.ParametricGeometry has been moved to /examples/jsm/geometries/ParametricGeometry.js');
		return new BufferGeometry();
	}
	function TextGeometry() {
		console.error('THREE.TextGeometry has been moved to /examples/jsm/geometries/TextGeometry.js');
		return new BufferGeometry();
	}
	function FontLoader() {
		console.error('THREE.FontLoader has been moved to /examples/jsm/loaders/FontLoader.js');
	}
	function Font() {
		console.error('THREE.Font has been moved to /examples/jsm/loaders/FontLoader.js');
	}

	if (typeof __THREE_DEVTOOLS__ !== 'undefined') {
		/* eslint-disable no-undef */
		__THREE_DEVTOOLS__.dispatchEvent(new CustomEvent('register', {
			detail: {
				revision: REVISION
			}
		}));
		/* eslint-enable no-undef */

	}

	if (typeof window !== 'undefined') {
		if (window.__THREE__) {
			console.warn('WARNING: Multiple instances of Three.js being imported.');
		} else {
			window.__THREE__ = REVISION;
		}
	}

	exports.ACESFilmicToneMapping = ACESFilmicToneMapping;
	exports.AddEquation = AddEquation;
	exports.AddOperation = AddOperation;
	exports.AdditiveAnimationBlendMode = AdditiveAnimationBlendMode;
	exports.AdditiveBlending = AdditiveBlending;
	exports.AlphaFormat = AlphaFormat;
	exports.AlwaysDepth = AlwaysDepth;
	exports.AlwaysStencilFunc = AlwaysStencilFunc;
	exports.AmbientLight = AmbientLight;
	exports.AmbientLightProbe = AmbientLightProbe;
	exports.AnimationClip = AnimationClip;
	exports.AnimationLoader = AnimationLoader;
	exports.AnimationMixer = AnimationMixer;
	exports.AnimationObjectGroup = AnimationObjectGroup;
	exports.AnimationUtils = AnimationUtils;
	exports.ArcCurve = ArcCurve;
	exports.ArrayCamera = ArrayCamera;
	exports.ArrowHelper = ArrowHelper;
	exports.Audio = Audio;
	exports.AudioAnalyser = AudioAnalyser;
	exports.AudioContext = AudioContext;
	exports.AudioListener = AudioListener;
	exports.AudioLoader = AudioLoader;
	exports.AxesHelper = AxesHelper;
	exports.AxisHelper = AxisHelper;
	exports.BackSide = BackSide;
	exports.BasicDepthPacking = BasicDepthPacking;
	exports.BasicShadowMap = BasicShadowMap;
	exports.BinaryTextureLoader = BinaryTextureLoader;
	exports.Bone = Bone;
	exports.BooleanKeyframeTrack = BooleanKeyframeTrack;
	exports.BoundingBoxHelper = BoundingBoxHelper;
	exports.Box2 = Box2;
	exports.Box3 = Box3;
	exports.Box3Helper = Box3Helper;
	exports.BoxBufferGeometry = BoxGeometry;
	exports.BoxGeometry = BoxGeometry;
	exports.BoxHelper = BoxHelper;
	exports.BufferAttribute = BufferAttribute;
	exports.BufferGeometry = BufferGeometry;
	exports.BufferGeometryLoader = BufferGeometryLoader;
	exports.ByteType = ByteType;
	exports.Cache = Cache;
	exports.Camera = Camera;
	exports.CameraHelper = CameraHelper;
	exports.CanvasRenderer = CanvasRenderer;
	exports.CanvasTexture = CanvasTexture;
	exports.CatmullRomCurve3 = CatmullRomCurve3;
	exports.CineonToneMapping = CineonToneMapping;
	exports.CircleBufferGeometry = CircleGeometry;
	exports.CircleGeometry = CircleGeometry;
	exports.ClampToEdgeWrapping = ClampToEdgeWrapping;
	exports.Clock = Clock;
	exports.Color = Color;
	exports.ColorKeyframeTrack = ColorKeyframeTrack;
	exports.CompressedTexture = CompressedTexture;
	exports.CompressedTextureLoader = CompressedTextureLoader;
	exports.ConeBufferGeometry = ConeGeometry;
	exports.ConeGeometry = ConeGeometry;
	exports.CubeCamera = CubeCamera;
	exports.CubeReflectionMapping = CubeReflectionMapping;
	exports.CubeRefractionMapping = CubeRefractionMapping;
	exports.CubeTexture = CubeTexture;
	exports.CubeTextureLoader = CubeTextureLoader;
	exports.CubeUVReflectionMapping = CubeUVReflectionMapping;
	exports.CubeUVRefractionMapping = CubeUVRefractionMapping;
	exports.CubicBezierCurve = CubicBezierCurve;
	exports.CubicBezierCurve3 = CubicBezierCurve3;
	exports.CubicInterpolant = CubicInterpolant;
	exports.CullFaceBack = CullFaceBack;
	exports.CullFaceFront = CullFaceFront;
	exports.CullFaceFrontBack = CullFaceFrontBack;
	exports.CullFaceNone = CullFaceNone;
	exports.Curve = Curve;
	exports.CurvePath = CurvePath;
	exports.CustomBlending = CustomBlending;
	exports.CustomToneMapping = CustomToneMapping;
	exports.CylinderBufferGeometry = CylinderGeometry;
	exports.CylinderGeometry = CylinderGeometry;
	exports.Cylindrical = Cylindrical;
	exports.DataTexture = DataTexture;
	exports.DataTexture2DArray = DataTexture2DArray;
	exports.DataTexture3D = DataTexture3D;
	exports.DataTextureLoader = DataTextureLoader;
	exports.DataUtils = DataUtils;
	exports.DecrementStencilOp = DecrementStencilOp;
	exports.DecrementWrapStencilOp = DecrementWrapStencilOp;
	exports.DefaultLoadingManager = DefaultLoadingManager;
	exports.DepthFormat = DepthFormat;
	exports.DepthStencilFormat = DepthStencilFormat;
	exports.DepthTexture = DepthTexture;
	exports.DirectionalLight = DirectionalLight;
	exports.DirectionalLightHelper = DirectionalLightHelper;
	exports.DiscreteInterpolant = DiscreteInterpolant;
	exports.DodecahedronBufferGeometry = DodecahedronGeometry;
	exports.DodecahedronGeometry = DodecahedronGeometry;
	exports.DoubleSide = DoubleSide;
	exports.DstAlphaFactor = DstAlphaFactor;
	exports.DstColorFactor = DstColorFactor;
	exports.DynamicBufferAttribute = DynamicBufferAttribute;
	exports.DynamicCopyUsage = DynamicCopyUsage;
	exports.DynamicDrawUsage = DynamicDrawUsage;
	exports.DynamicReadUsage = DynamicReadUsage;
	exports.EdgesGeometry = EdgesGeometry;
	exports.EdgesHelper = EdgesHelper;
	exports.EllipseCurve = EllipseCurve;
	exports.EqualDepth = EqualDepth;
	exports.EqualStencilFunc = EqualStencilFunc;
	exports.EquirectangularReflectionMapping = EquirectangularReflectionMapping;
	exports.EquirectangularRefractionMapping = EquirectangularRefractionMapping;
	exports.Euler = Euler;
	exports.EventDispatcher = EventDispatcher;
	exports.ExtrudeBufferGeometry = ExtrudeGeometry;
	exports.ExtrudeGeometry = ExtrudeGeometry;
	exports.FaceColors = FaceColors;
	exports.FileLoader = FileLoader;
	exports.FlatShading = FlatShading;
	exports.Float16BufferAttribute = Float16BufferAttribute;
	exports.Float32Attribute = Float32Attribute;
	exports.Float32BufferAttribute = Float32BufferAttribute;
	exports.Float64Attribute = Float64Attribute;
	exports.Float64BufferAttribute = Float64BufferAttribute;
	exports.FloatType = FloatType;
	exports.Fog = Fog;
	exports.FogExp2 = FogExp2;
	exports.Font = Font;
	exports.FontLoader = FontLoader;
	exports.FrontSide = FrontSide;
	exports.Frustum = Frustum;
	exports.GLBufferAttribute = GLBufferAttribute;
	exports.GLSL1 = GLSL1;
	exports.GLSL3 = GLSL3;
	exports.GammaEncoding = GammaEncoding;
	exports.GreaterDepth = GreaterDepth;
	exports.GreaterEqualDepth = GreaterEqualDepth;
	exports.GreaterEqualStencilFunc = GreaterEqualStencilFunc;
	exports.GreaterStencilFunc = GreaterStencilFunc;
	exports.GridHelper = GridHelper;
	exports.Group = Group;
	exports.HalfFloatType = HalfFloatType;
	exports.HemisphereLight = HemisphereLight;
	exports.HemisphereLightHelper = HemisphereLightHelper;
	exports.HemisphereLightProbe = HemisphereLightProbe;
	exports.IcosahedronBufferGeometry = IcosahedronGeometry;
	exports.IcosahedronGeometry = IcosahedronGeometry;
	exports.ImageBitmapLoader = ImageBitmapLoader;
	exports.ImageLoader = ImageLoader;
	exports.ImageUtils = ImageUtils;
	exports.ImmediateRenderObject = ImmediateRenderObject;
	exports.IncrementStencilOp = IncrementStencilOp;
	exports.IncrementWrapStencilOp = IncrementWrapStencilOp;
	exports.InstancedBufferAttribute = InstancedBufferAttribute;
	exports.InstancedBufferGeometry = InstancedBufferGeometry;
	exports.InstancedInterleavedBuffer = InstancedInterleavedBuffer;
	exports.InstancedMesh = InstancedMesh;
	exports.Int16Attribute = Int16Attribute;
	exports.Int16BufferAttribute = Int16BufferAttribute;
	exports.Int32Attribute = Int32Attribute;
	exports.Int32BufferAttribute = Int32BufferAttribute;
	exports.Int8Attribute = Int8Attribute;
	exports.Int8BufferAttribute = Int8BufferAttribute;
	exports.IntType = IntType;
	exports.InterleavedBuffer = InterleavedBuffer;
	exports.InterleavedBufferAttribute = InterleavedBufferAttribute;
	exports.Interpolant = Interpolant;
	exports.InterpolateDiscrete = InterpolateDiscrete;
	exports.InterpolateLinear = InterpolateLinear;
	exports.InterpolateSmooth = InterpolateSmooth;
	exports.InvertStencilOp = InvertStencilOp;
	exports.JSONLoader = JSONLoader;
	exports.KeepStencilOp = KeepStencilOp;
	exports.KeyframeTrack = KeyframeTrack;
	exports.LOD = LOD;
	exports.LatheBufferGeometry = LatheGeometry;
	exports.LatheGeometry = LatheGeometry;
	exports.Layers = Layers;
	exports.LensFlare = LensFlare;
	exports.LessDepth = LessDepth;
	exports.LessEqualDepth = LessEqualDepth;
	exports.LessEqualStencilFunc = LessEqualStencilFunc;
	exports.LessStencilFunc = LessStencilFunc;
	exports.Light = Light;
	exports.LightProbe = LightProbe;
	exports.Line = Line;
	exports.Line3 = Line3;
	exports.LineBasicMaterial = LineBasicMaterial;
	exports.LineCurve = LineCurve;
	exports.LineCurve3 = LineCurve3;
	exports.LineDashedMaterial = LineDashedMaterial;
	exports.LineLoop = LineLoop;
	exports.LinePieces = LinePieces;
	exports.LineSegments = LineSegments;
	exports.LineStrip = LineStrip;
	exports.LinearEncoding = LinearEncoding;
	exports.LinearFilter = LinearFilter;
	exports.LinearInterpolant = LinearInterpolant;
	exports.LinearMipMapLinearFilter = LinearMipMapLinearFilter;
	exports.LinearMipMapNearestFilter = LinearMipMapNearestFilter;
	exports.LinearMipmapLinearFilter = LinearMipmapLinearFilter;
	exports.LinearMipmapNearestFilter = LinearMipmapNearestFilter;
	exports.LinearToneMapping = LinearToneMapping;
	exports.Loader = Loader;
	exports.LoaderUtils = LoaderUtils;
	exports.LoadingManager = LoadingManager;
	exports.LogLuvEncoding = LogLuvEncoding;
	exports.LoopOnce = LoopOnce;
	exports.LoopPingPong = LoopPingPong;
	exports.LoopRepeat = LoopRepeat;
	exports.LuminanceAlphaFormat = LuminanceAlphaFormat;
	exports.LuminanceFormat = LuminanceFormat;
	exports.MOUSE = MOUSE;
	exports.Material = Material;
	exports.MaterialLoader = MaterialLoader;
	exports.Math = MathUtils;
	exports.MathUtils = MathUtils;
	exports.Matrix3 = Matrix3;
	exports.Matrix4 = Matrix4;
	exports.MaxEquation = MaxEquation;
	exports.Mesh = Mesh;
	exports.MeshBasicMaterial = MeshBasicMaterial;
	exports.MeshDepthMaterial = MeshDepthMaterial;
	exports.MeshDistanceMaterial = MeshDistanceMaterial;
	exports.MeshFaceMaterial = MeshFaceMaterial;
	exports.MeshLambertMaterial = MeshLambertMaterial;
	exports.MeshMatcapMaterial = MeshMatcapMaterial;
	exports.MeshNormalMaterial = MeshNormalMaterial;
	exports.MeshPhongMaterial = MeshPhongMaterial;
	exports.MeshPhysicalMaterial = MeshPhysicalMaterial;
	exports.MeshStandardMaterial = MeshStandardMaterial;
	exports.MeshToonMaterial = MeshToonMaterial;
	exports.MinEquation = MinEquation;
	exports.MirroredRepeatWrapping = MirroredRepeatWrapping;
	exports.MixOperation = MixOperation;
	exports.MultiMaterial = MultiMaterial;
	exports.MultiplyBlending = MultiplyBlending;
	exports.MultiplyOperation = MultiplyOperation;
	exports.NearestFilter = NearestFilter;
	exports.NearestMipMapLinearFilter = NearestMipMapLinearFilter;
	exports.NearestMipMapNearestFilter = NearestMipMapNearestFilter;
	exports.NearestMipmapLinearFilter = NearestMipmapLinearFilter;
	exports.NearestMipmapNearestFilter = NearestMipmapNearestFilter;
	exports.NeverDepth = NeverDepth;
	exports.NeverStencilFunc = NeverStencilFunc;
	exports.NoBlending = NoBlending;
	exports.NoColors = NoColors;
	exports.NoToneMapping = NoToneMapping;
	exports.NormalAnimationBlendMode = NormalAnimationBlendMode;
	exports.NormalBlending = NormalBlending;
	exports.NotEqualDepth = NotEqualDepth;
	exports.NotEqualStencilFunc = NotEqualStencilFunc;
	exports.NumberKeyframeTrack = NumberKeyframeTrack;
	exports.Object3D = Object3D;
	exports.ObjectLoader = ObjectLoader;
	exports.ObjectSpaceNormalMap = ObjectSpaceNormalMap;
	exports.OctahedronBufferGeometry = OctahedronGeometry;
	exports.OctahedronGeometry = OctahedronGeometry;
	exports.OneFactor = OneFactor;
	exports.OneMinusDstAlphaFactor = OneMinusDstAlphaFactor;
	exports.OneMinusDstColorFactor = OneMinusDstColorFactor;
	exports.OneMinusSrcAlphaFactor = OneMinusSrcAlphaFactor;
	exports.OneMinusSrcColorFactor = OneMinusSrcColorFactor;
	exports.OrthographicCamera = OrthographicCamera;
	exports.PCFShadowMap = PCFShadowMap;
	exports.PCFSoftShadowMap = PCFSoftShadowMap;
	exports.PMREMGenerator = PMREMGenerator;
	exports.ParametricGeometry = ParametricGeometry;
	exports.Particle = Particle;
	exports.ParticleBasicMaterial = ParticleBasicMaterial;
	exports.ParticleSystem = ParticleSystem;
	exports.ParticleSystemMaterial = ParticleSystemMaterial;
	exports.Path = Path;
	exports.PerspectiveCamera = PerspectiveCamera;
	exports.Plane = Plane;
	exports.PlaneBufferGeometry = PlaneGeometry;
	exports.PlaneGeometry = PlaneGeometry;
	exports.PlaneHelper = PlaneHelper;
	exports.PointCloud = PointCloud;
	exports.PointCloudMaterial = PointCloudMaterial;
	exports.PointLight = PointLight;
	exports.PointLightHelper = PointLightHelper;
	exports.Points = Points;
	exports.PointsMaterial = PointsMaterial;
	exports.PolarGridHelper = PolarGridHelper;
	exports.PolyhedronBufferGeometry = PolyhedronGeometry;
	exports.PolyhedronGeometry = PolyhedronGeometry;
	exports.PositionalAudio = PositionalAudio;
	exports.PropertyBinding = PropertyBinding;
	exports.PropertyMixer = PropertyMixer;
	exports.QuadraticBezierCurve = QuadraticBezierCurve;
	exports.QuadraticBezierCurve3 = QuadraticBezierCurve3;
	exports.Quaternion = Quaternion;
	exports.QuaternionKeyframeTrack = QuaternionKeyframeTrack;
	exports.QuaternionLinearInterpolant = QuaternionLinearInterpolant;
	exports.REVISION = REVISION;
	exports.RGBADepthPacking = RGBADepthPacking;
	exports.RGBAFormat = RGBAFormat;
	exports.RGBAIntegerFormat = RGBAIntegerFormat;
	exports.RGBA_ASTC_10x10_Format = RGBA_ASTC_10x10_Format;
	exports.RGBA_ASTC_10x5_Format = RGBA_ASTC_10x5_Format;
	exports.RGBA_ASTC_10x6_Format = RGBA_ASTC_10x6_Format;
	exports.RGBA_ASTC_10x8_Format = RGBA_ASTC_10x8_Format;
	exports.RGBA_ASTC_12x10_Format = RGBA_ASTC_12x10_Format;
	exports.RGBA_ASTC_12x12_Format = RGBA_ASTC_12x12_Format;
	exports.RGBA_ASTC_4x4_Format = RGBA_ASTC_4x4_Format;
	exports.RGBA_ASTC_5x4_Format = RGBA_ASTC_5x4_Format;
	exports.RGBA_ASTC_5x5_Format = RGBA_ASTC_5x5_Format;
	exports.RGBA_ASTC_6x5_Format = RGBA_ASTC_6x5_Format;
	exports.RGBA_ASTC_6x6_Format = RGBA_ASTC_6x6_Format;
	exports.RGBA_ASTC_8x5_Format = RGBA_ASTC_8x5_Format;
	exports.RGBA_ASTC_8x6_Format = RGBA_ASTC_8x6_Format;
	exports.RGBA_ASTC_8x8_Format = RGBA_ASTC_8x8_Format;
	exports.RGBA_BPTC_Format = RGBA_BPTC_Format;
	exports.RGBA_ETC2_EAC_Format = RGBA_ETC2_EAC_Format;
	exports.RGBA_PVRTC_2BPPV1_Format = RGBA_PVRTC_2BPPV1_Format;
	exports.RGBA_PVRTC_4BPPV1_Format = RGBA_PVRTC_4BPPV1_Format;
	exports.RGBA_S3TC_DXT1_Format = RGBA_S3TC_DXT1_Format;
	exports.RGBA_S3TC_DXT3_Format = RGBA_S3TC_DXT3_Format;
	exports.RGBA_S3TC_DXT5_Format = RGBA_S3TC_DXT5_Format;
	exports.RGBDEncoding = RGBDEncoding;
	exports.RGBEEncoding = RGBEEncoding;
	exports.RGBEFormat = RGBEFormat;
	exports.RGBFormat = RGBFormat;
	exports.RGBIntegerFormat = RGBIntegerFormat;
	exports.RGBM16Encoding = RGBM16Encoding;
	exports.RGBM7Encoding = RGBM7Encoding;
	exports.RGB_ETC1_Format = RGB_ETC1_Format;
	exports.RGB_ETC2_Format = RGB_ETC2_Format;
	exports.RGB_PVRTC_2BPPV1_Format = RGB_PVRTC_2BPPV1_Format;
	exports.RGB_PVRTC_4BPPV1_Format = RGB_PVRTC_4BPPV1_Format;
	exports.RGB_S3TC_DXT1_Format = RGB_S3TC_DXT1_Format;
	exports.RGFormat = RGFormat;
	exports.RGIntegerFormat = RGIntegerFormat;
	exports.RawShaderMaterial = RawShaderMaterial;
	exports.Ray = Ray;
	exports.Raycaster = Raycaster;
	exports.RectAreaLight = RectAreaLight;
	exports.RedFormat = RedFormat;
	exports.RedIntegerFormat = RedIntegerFormat;
	exports.ReinhardToneMapping = ReinhardToneMapping;
	exports.RepeatWrapping = RepeatWrapping;
	exports.ReplaceStencilOp = ReplaceStencilOp;
	exports.ReverseSubtractEquation = ReverseSubtractEquation;
	exports.RingBufferGeometry = RingGeometry;
	exports.RingGeometry = RingGeometry;
	exports.SRGB8_ALPHA8_ASTC_10x10_Format = SRGB8_ALPHA8_ASTC_10x10_Format;
	exports.SRGB8_ALPHA8_ASTC_10x5_Format = SRGB8_ALPHA8_ASTC_10x5_Format;
	exports.SRGB8_ALPHA8_ASTC_10x6_Format = SRGB8_ALPHA8_ASTC_10x6_Format;
	exports.SRGB8_ALPHA8_ASTC_10x8_Format = SRGB8_ALPHA8_ASTC_10x8_Format;
	exports.SRGB8_ALPHA8_ASTC_12x10_Format = SRGB8_ALPHA8_ASTC_12x10_Format;
	exports.SRGB8_ALPHA8_ASTC_12x12_Format = SRGB8_ALPHA8_ASTC_12x12_Format;
	exports.SRGB8_ALPHA8_ASTC_4x4_Format = SRGB8_ALPHA8_ASTC_4x4_Format;
	exports.SRGB8_ALPHA8_ASTC_5x4_Format = SRGB8_ALPHA8_ASTC_5x4_Format;
	exports.SRGB8_ALPHA8_ASTC_5x5_Format = SRGB8_ALPHA8_ASTC_5x5_Format;
	exports.SRGB8_ALPHA8_ASTC_6x5_Format = SRGB8_ALPHA8_ASTC_6x5_Format;
	exports.SRGB8_ALPHA8_ASTC_6x6_Format = SRGB8_ALPHA8_ASTC_6x6_Format;
	exports.SRGB8_ALPHA8_ASTC_8x5_Format = SRGB8_ALPHA8_ASTC_8x5_Format;
	exports.SRGB8_ALPHA8_ASTC_8x6_Format = SRGB8_ALPHA8_ASTC_8x6_Format;
	exports.SRGB8_ALPHA8_ASTC_8x8_Format = SRGB8_ALPHA8_ASTC_8x8_Format;
	exports.Scene = Scene;
	exports.SceneUtils = SceneUtils;
	exports.ShaderChunk = ShaderChunk;
	exports.ShaderLib = ShaderLib;
	exports.ShaderMaterial = ShaderMaterial;
	exports.ShadowMaterial = ShadowMaterial;
	exports.Shape = Shape;
	exports.ShapeBufferGeometry = ShapeGeometry;
	exports.ShapeGeometry = ShapeGeometry;
	exports.ShapePath = ShapePath;
	exports.ShapeUtils = ShapeUtils;
	exports.ShortType = ShortType;
	exports.Skeleton = Skeleton;
	exports.SkeletonHelper = SkeletonHelper;
	exports.SkinnedMesh = SkinnedMesh;
	exports.SmoothShading = SmoothShading;
	exports.Sphere = Sphere;
	exports.SphereBufferGeometry = SphereGeometry;
	exports.SphereGeometry = SphereGeometry;
	exports.Spherical = Spherical;
	exports.SphericalHarmonics3 = SphericalHarmonics3;
	exports.SplineCurve = SplineCurve;
	exports.SpotLight = SpotLight;
	exports.SpotLightHelper = SpotLightHelper;
	exports.Sprite = Sprite;
	exports.SpriteMaterial = SpriteMaterial;
	exports.SrcAlphaFactor = SrcAlphaFactor;
	exports.SrcAlphaSaturateFactor = SrcAlphaSaturateFactor;
	exports.SrcColorFactor = SrcColorFactor;
	exports.StaticCopyUsage = StaticCopyUsage;
	exports.StaticDrawUsage = StaticDrawUsage;
	exports.StaticReadUsage = StaticReadUsage;
	exports.StereoCamera = StereoCamera;
	exports.StreamCopyUsage = StreamCopyUsage;
	exports.StreamDrawUsage = StreamDrawUsage;
	exports.StreamReadUsage = StreamReadUsage;
	exports.StringKeyframeTrack = StringKeyframeTrack;
	exports.SubtractEquation = SubtractEquation;
	exports.SubtractiveBlending = SubtractiveBlending;
	exports.TOUCH = TOUCH;
	exports.TangentSpaceNormalMap = TangentSpaceNormalMap;
	exports.TetrahedronBufferGeometry = TetrahedronGeometry;
	exports.TetrahedronGeometry = TetrahedronGeometry;
	exports.TextGeometry = TextGeometry;
	exports.Texture = Texture;
	exports.TextureLoader = TextureLoader;
	exports.TorusBufferGeometry = TorusGeometry;
	exports.TorusGeometry = TorusGeometry;
	exports.TorusKnotBufferGeometry = TorusKnotGeometry;
	exports.TorusKnotGeometry = TorusKnotGeometry;
	exports.Triangle = Triangle;
	exports.TriangleFanDrawMode = TriangleFanDrawMode;
	exports.TriangleStripDrawMode = TriangleStripDrawMode;
	exports.TrianglesDrawMode = TrianglesDrawMode;
	exports.TubeBufferGeometry = TubeGeometry;
	exports.TubeGeometry = TubeGeometry;
	exports.UVMapping = UVMapping;
	exports.Uint16Attribute = Uint16Attribute;
	exports.Uint16BufferAttribute = Uint16BufferAttribute;
	exports.Uint32Attribute = Uint32Attribute;
	exports.Uint32BufferAttribute = Uint32BufferAttribute;
	exports.Uint8Attribute = Uint8Attribute;
	exports.Uint8BufferAttribute = Uint8BufferAttribute;
	exports.Uint8ClampedAttribute = Uint8ClampedAttribute;
	exports.Uint8ClampedBufferAttribute = Uint8ClampedBufferAttribute;
	exports.Uniform = Uniform;
	exports.UniformsLib = UniformsLib;
	exports.UniformsUtils = UniformsUtils;
	exports.UnsignedByteType = UnsignedByteType;
	exports.UnsignedInt248Type = UnsignedInt248Type;
	exports.UnsignedIntType = UnsignedIntType;
	exports.UnsignedShort4444Type = UnsignedShort4444Type;
	exports.UnsignedShort5551Type = UnsignedShort5551Type;
	exports.UnsignedShort565Type = UnsignedShort565Type;
	exports.UnsignedShortType = UnsignedShortType;
	exports.VSMShadowMap = VSMShadowMap;
	exports.Vector2 = Vector2;
	exports.Vector3 = Vector3;
	exports.Vector4 = Vector4;
	exports.VectorKeyframeTrack = VectorKeyframeTrack;
	exports.Vertex = Vertex;
	exports.VertexColors = VertexColors;
	exports.VideoTexture = VideoTexture;
	exports.WebGL1Renderer = WebGL1Renderer;
	exports.WebGLCubeRenderTarget = WebGLCubeRenderTarget;
	exports.WebGLMultipleRenderTargets = WebGLMultipleRenderTargets;
	exports.WebGLMultisampleRenderTarget = WebGLMultisampleRenderTarget;
	exports.WebGLRenderTarget = WebGLRenderTarget;
	exports.WebGLRenderTargetCube = WebGLRenderTargetCube;
	exports.WebGLRenderer = WebGLRenderer;
	exports.WebGLUtils = WebGLUtils;
	exports.WireframeGeometry = WireframeGeometry;
	exports.WireframeHelper = WireframeHelper;
	exports.WrapAroundEnding = WrapAroundEnding;
	exports.XHRLoader = XHRLoader;
	exports.ZeroCurvatureEnding = ZeroCurvatureEnding;
	exports.ZeroFactor = ZeroFactor;
	exports.ZeroSlopeEnding = ZeroSlopeEnding;
	exports.ZeroStencilOp = ZeroStencilOp;
	exports.sRGBEncoding = sRGBEncoding;

	Object.defineProperty(exports, '__esModule', { value: true });

})));

},{}],58:[function(require,module,exports){
( function () {

	class LightProbeGenerator {

		// https://www.ppsloan.org/publications/StupidSH36.pdf
		static fromCubeTexture( cubeTexture ) {

			let totalWeight = 0;
			const coord = new THREE.Vector3();
			const dir = new THREE.Vector3();
			const color = new THREE.Color();
			const shBasis = [ 0, 0, 0, 0, 0, 0, 0, 0, 0 ];
			const sh = new THREE.SphericalHarmonics3();
			const shCoefficients = sh.coefficients;

			for ( let faceIndex = 0; faceIndex < 6; faceIndex ++ ) {

				const image = cubeTexture.image[ faceIndex ];
				const width = image.width;
				const height = image.height;
				const canvas = document.createElement( 'canvas' );
				canvas.width = width;
				canvas.height = height;
				const context = canvas.getContext( '2d' );
				context.drawImage( image, 0, 0, width, height );
				const imageData = context.getImageData( 0, 0, width, height );
				const data = imageData.data;
				const imageWidth = imageData.width; // assumed to be square

				const pixelSize = 2 / imageWidth;

				for ( let i = 0, il = data.length; i < il; i += 4 ) {

					// RGBA assumed
					// pixel color
					color.setRGB( data[ i ] / 255, data[ i + 1 ] / 255, data[ i + 2 ] / 255 ); // convert to linear color space

					convertColorToLinear( color, cubeTexture.encoding ); // pixel coordinate on unit cube

					const pixelIndex = i / 4;
					const col = - 1 + ( pixelIndex % imageWidth + 0.5 ) * pixelSize;
					const row = 1 - ( Math.floor( pixelIndex / imageWidth ) + 0.5 ) * pixelSize;

					switch ( faceIndex ) {

						case 0:
							coord.set( - 1, row, - col );
							break;

						case 1:
							coord.set( 1, row, col );
							break;

						case 2:
							coord.set( - col, 1, - row );
							break;

						case 3:
							coord.set( - col, - 1, row );
							break;

						case 4:
							coord.set( - col, row, 1 );
							break;

						case 5:
							coord.set( col, row, - 1 );
							break;

					} // weight assigned to this pixel


					const lengthSq = coord.lengthSq();
					const weight = 4 / ( Math.sqrt( lengthSq ) * lengthSq );
					totalWeight += weight; // direction vector to this pixel

					dir.copy( coord ).normalize(); // evaluate SH basis functions in direction dir

					THREE.SphericalHarmonics3.getBasisAt( dir, shBasis ); // accummuulate

					for ( let j = 0; j < 9; j ++ ) {

						shCoefficients[ j ].x += shBasis[ j ] * color.r * weight;
						shCoefficients[ j ].y += shBasis[ j ] * color.g * weight;
						shCoefficients[ j ].z += shBasis[ j ] * color.b * weight;

					}

				}

			} // normalize


			const norm = 4 * Math.PI / totalWeight;

			for ( let j = 0; j < 9; j ++ ) {

				shCoefficients[ j ].x *= norm;
				shCoefficients[ j ].y *= norm;
				shCoefficients[ j ].z *= norm;

			}

			return new THREE.LightProbe( sh );

		}

		static fromCubeRenderTarget( renderer, cubeRenderTarget ) {

			// The renderTarget must be set to RGBA in order to make readRenderTargetPixels works
			let totalWeight = 0;
			const coord = new THREE.Vector3();
			const dir = new THREE.Vector3();
			const color = new THREE.Color();
			const shBasis = [ 0, 0, 0, 0, 0, 0, 0, 0, 0 ];
			const sh = new THREE.SphericalHarmonics3();
			const shCoefficients = sh.coefficients;

			for ( let faceIndex = 0; faceIndex < 6; faceIndex ++ ) {

				const imageWidth = cubeRenderTarget.width; // assumed to be square

				const data = new Uint8Array( imageWidth * imageWidth * 4 );
				renderer.readRenderTargetPixels( cubeRenderTarget, 0, 0, imageWidth, imageWidth, data, faceIndex );
				const pixelSize = 2 / imageWidth;

				for ( let i = 0, il = data.length; i < il; i += 4 ) {

					// RGBA assumed
					// pixel color
					color.setRGB( data[ i ] / 255, data[ i + 1 ] / 255, data[ i + 2 ] / 255 ); // convert to linear color space

					convertColorToLinear( color, cubeRenderTarget.texture.encoding ); // pixel coordinate on unit cube

					const pixelIndex = i / 4;
					const col = - 1 + ( pixelIndex % imageWidth + 0.5 ) * pixelSize;
					const row = 1 - ( Math.floor( pixelIndex / imageWidth ) + 0.5 ) * pixelSize;

					switch ( faceIndex ) {

						case 0:
							coord.set( 1, row, - col );
							break;

						case 1:
							coord.set( - 1, row, col );
							break;

						case 2:
							coord.set( col, 1, - row );
							break;

						case 3:
							coord.set( col, - 1, row );
							break;

						case 4:
							coord.set( col, row, 1 );
							break;

						case 5:
							coord.set( - col, row, - 1 );
							break;

					} // weight assigned to this pixel


					const lengthSq = coord.lengthSq();
					const weight = 4 / ( Math.sqrt( lengthSq ) * lengthSq );
					totalWeight += weight; // direction vector to this pixel

					dir.copy( coord ).normalize(); // evaluate SH basis functions in direction dir

					THREE.SphericalHarmonics3.getBasisAt( dir, shBasis ); // accummuulate

					for ( let j = 0; j < 9; j ++ ) {

						shCoefficients[ j ].x += shBasis[ j ] * color.r * weight;
						shCoefficients[ j ].y += shBasis[ j ] * color.g * weight;
						shCoefficients[ j ].z += shBasis[ j ] * color.b * weight;

					}

				}

			} // normalize


			const norm = 4 * Math.PI / totalWeight;

			for ( let j = 0; j < 9; j ++ ) {

				shCoefficients[ j ].x *= norm;
				shCoefficients[ j ].y *= norm;
				shCoefficients[ j ].z *= norm;

			}

			return new THREE.LightProbe( sh );

		}

	}

	function convertColorToLinear( color, encoding ) {

		switch ( encoding ) {

			case THREE.sRGBEncoding:
				color.convertSRGBToLinear();
				break;

			case THREE.LinearEncoding:
				break;

			default:
				console.warn( 'WARNING: LightProbeGenerator convertColorToLinear() encountered an unsupported encoding.' );
				break;

		}

		return color;

	}

	THREE.LightProbeGenerator = LightProbeGenerator;

} )();

},{}],59:[function(require,module,exports){
( function () {

	const _taskCache = new WeakMap();

	class DRACOLoader extends THREE.Loader {

		constructor( manager ) {

			super( manager );
			this.decoderPath = '';
			this.decoderConfig = {};
			this.decoderBinary = null;
			this.decoderPending = null;
			this.workerLimit = 4;
			this.workerPool = [];
			this.workerNextTaskID = 1;
			this.workerSourceURL = '';
			this.defaultAttributeIDs = {
				position: 'POSITION',
				normal: 'NORMAL',
				color: 'COLOR',
				uv: 'TEX_COORD'
			};
			this.defaultAttributeTypes = {
				position: 'Float32Array',
				normal: 'Float32Array',
				color: 'Float32Array',
				uv: 'Float32Array'
			};

		}

		setDecoderPath( path ) {

			this.decoderPath = path;
			return this;

		}

		setDecoderConfig( config ) {

			this.decoderConfig = config;
			return this;

		}

		setWorkerLimit( workerLimit ) {

			this.workerLimit = workerLimit;
			return this;

		}

		load( url, onLoad, onProgress, onError ) {

			const loader = new THREE.FileLoader( this.manager );
			loader.setPath( this.path );
			loader.setResponseType( 'arraybuffer' );
			loader.setRequestHeader( this.requestHeader );
			loader.setWithCredentials( this.withCredentials );
			loader.load( url, buffer => {

				const taskConfig = {
					attributeIDs: this.defaultAttributeIDs,
					attributeTypes: this.defaultAttributeTypes,
					useUniqueIDs: false
				};
				this.decodeGeometry( buffer, taskConfig ).then( onLoad ).catch( onError );

			}, onProgress, onError );

		}
		/** @deprecated Kept for backward-compatibility with previous DRACOLoader versions. */


		decodeDracoFile( buffer, callback, attributeIDs, attributeTypes ) {

			const taskConfig = {
				attributeIDs: attributeIDs || this.defaultAttributeIDs,
				attributeTypes: attributeTypes || this.defaultAttributeTypes,
				useUniqueIDs: !! attributeIDs
			};
			this.decodeGeometry( buffer, taskConfig ).then( callback );

		}

		decodeGeometry( buffer, taskConfig ) {

			// TODO: For backward-compatibility, support 'attributeTypes' objects containing
			// references (rather than names) to typed array constructors. These must be
			// serialized before sending them to the worker.
			for ( const attribute in taskConfig.attributeTypes ) {

				const type = taskConfig.attributeTypes[ attribute ];

				if ( type.BYTES_PER_ELEMENT !== undefined ) {

					taskConfig.attributeTypes[ attribute ] = type.name;

				}

			} //


			const taskKey = JSON.stringify( taskConfig ); // Check for an existing task using this buffer. A transferred buffer cannot be transferred
			// again from this thread.

			if ( _taskCache.has( buffer ) ) {

				const cachedTask = _taskCache.get( buffer );

				if ( cachedTask.key === taskKey ) {

					return cachedTask.promise;

				} else if ( buffer.byteLength === 0 ) {

					// Technically, it would be possible to wait for the previous task to complete,
					// transfer the buffer back, and decode again with the second configuration. That
					// is complex, and I don't know of any reason to decode a Draco buffer twice in
					// different ways, so this is left unimplemented.
					throw new Error( 'THREE.DRACOLoader: Unable to re-decode a buffer with different ' + 'settings. Buffer has already been transferred.' );

				}

			} //


			let worker;
			const taskID = this.workerNextTaskID ++;
			const taskCost = buffer.byteLength; // Obtain a worker and assign a task, and construct a geometry instance
			// when the task completes.

			const geometryPending = this._getWorker( taskID, taskCost ).then( _worker => {

				worker = _worker;
				return new Promise( ( resolve, reject ) => {

					worker._callbacks[ taskID ] = {
						resolve,
						reject
					};
					worker.postMessage( {
						type: 'decode',
						id: taskID,
						taskConfig,
						buffer
					}, [ buffer ] ); // this.debug();

				} );

			} ).then( message => this._createGeometry( message.geometry ) ); // Remove task from the task list.
			// Note: replaced '.finally()' with '.catch().then()' block - iOS 11 support (#19416)


			geometryPending.catch( () => true ).then( () => {

				if ( worker && taskID ) {

					this._releaseTask( worker, taskID ); // this.debug();

				}

			} ); // Cache the task result.

			_taskCache.set( buffer, {
				key: taskKey,
				promise: geometryPending
			} );

			return geometryPending;

		}

		_createGeometry( geometryData ) {

			const geometry = new THREE.BufferGeometry();

			if ( geometryData.index ) {

				geometry.setIndex( new THREE.BufferAttribute( geometryData.index.array, 1 ) );

			}

			for ( let i = 0; i < geometryData.attributes.length; i ++ ) {

				const attribute = geometryData.attributes[ i ];
				const name = attribute.name;
				const array = attribute.array;
				const itemSize = attribute.itemSize;
				geometry.setAttribute( name, new THREE.BufferAttribute( array, itemSize ) );

			}

			return geometry;

		}

		_loadLibrary( url, responseType ) {

			const loader = new THREE.FileLoader( this.manager );
			loader.setPath( this.decoderPath );
			loader.setResponseType( responseType );
			loader.setWithCredentials( this.withCredentials );
			return new Promise( ( resolve, reject ) => {

				loader.load( url, resolve, undefined, reject );

			} );

		}

		preload() {

			this._initDecoder();

			return this;

		}

		_initDecoder() {

			if ( this.decoderPending ) return this.decoderPending;
			const useJS = typeof WebAssembly !== 'object' || this.decoderConfig.type === 'js';
			const librariesPending = [];

			if ( useJS ) {

				librariesPending.push( this._loadLibrary( 'draco_decoder.js', 'text' ) );

			} else {

				librariesPending.push( this._loadLibrary( 'draco_wasm_wrapper.js', 'text' ) );
				librariesPending.push( this._loadLibrary( 'draco_decoder.wasm', 'arraybuffer' ) );

			}

			this.decoderPending = Promise.all( librariesPending ).then( libraries => {

				const jsContent = libraries[ 0 ];

				if ( ! useJS ) {

					this.decoderConfig.wasmBinary = libraries[ 1 ];

				}

				const fn = DRACOWorker.toString();
				const body = [ '/* draco decoder */', jsContent, '', '/* worker */', fn.substring( fn.indexOf( '{' ) + 1, fn.lastIndexOf( '}' ) ) ].join( '\n' );
				this.workerSourceURL = URL.createObjectURL( new Blob( [ body ] ) );

			} );
			return this.decoderPending;

		}

		_getWorker( taskID, taskCost ) {

			return this._initDecoder().then( () => {

				if ( this.workerPool.length < this.workerLimit ) {

					const worker = new Worker( this.workerSourceURL );
					worker._callbacks = {};
					worker._taskCosts = {};
					worker._taskLoad = 0;
					worker.postMessage( {
						type: 'init',
						decoderConfig: this.decoderConfig
					} );

					worker.onmessage = function ( e ) {

						const message = e.data;

						switch ( message.type ) {

							case 'decode':
								worker._callbacks[ message.id ].resolve( message );

								break;

							case 'error':
								worker._callbacks[ message.id ].reject( message );

								break;

							default:
								console.error( 'THREE.DRACOLoader: Unexpected message, "' + message.type + '"' );

						}

					};

					this.workerPool.push( worker );

				} else {

					this.workerPool.sort( function ( a, b ) {

						return a._taskLoad > b._taskLoad ? - 1 : 1;

					} );

				}

				const worker = this.workerPool[ this.workerPool.length - 1 ];
				worker._taskCosts[ taskID ] = taskCost;
				worker._taskLoad += taskCost;
				return worker;

			} );

		}

		_releaseTask( worker, taskID ) {

			worker._taskLoad -= worker._taskCosts[ taskID ];
			delete worker._callbacks[ taskID ];
			delete worker._taskCosts[ taskID ];

		}

		debug() {

			console.log( 'Task load: ', this.workerPool.map( worker => worker._taskLoad ) );

		}

		dispose() {

			for ( let i = 0; i < this.workerPool.length; ++ i ) {

				this.workerPool[ i ].terminate();

			}

			this.workerPool.length = 0;
			return this;

		}

	}
	/* WEB WORKER */


	function DRACOWorker() {

		let decoderConfig;
		let decoderPending;

		onmessage = function ( e ) {

			const message = e.data;

			switch ( message.type ) {

				case 'init':
					decoderConfig = message.decoderConfig;
					decoderPending = new Promise( function ( resolve
						/*, reject*/
					) {

						decoderConfig.onModuleLoaded = function ( draco ) {

							// Module is Promise-like. Wrap before resolving to avoid loop.
							resolve( {
								draco: draco
							} );

						};

						DracoDecoderModule( decoderConfig ); // eslint-disable-line no-undef

					} );
					break;

				case 'decode':
					const buffer = message.buffer;
					const taskConfig = message.taskConfig;
					decoderPending.then( module => {

						const draco = module.draco;
						const decoder = new draco.Decoder();
						const decoderBuffer = new draco.DecoderBuffer();
						decoderBuffer.Init( new Int8Array( buffer ), buffer.byteLength );

						try {

							const geometry = decodeGeometry( draco, decoder, decoderBuffer, taskConfig );
							const buffers = geometry.attributes.map( attr => attr.array.buffer );
							if ( geometry.index ) buffers.push( geometry.index.array.buffer );
							self.postMessage( {
								type: 'decode',
								id: message.id,
								geometry
							}, buffers );

						} catch ( error ) {

							console.error( error );
							self.postMessage( {
								type: 'error',
								id: message.id,
								error: error.message
							} );

						} finally {

							draco.destroy( decoderBuffer );
							draco.destroy( decoder );

						}

					} );
					break;

			}

		};

		function decodeGeometry( draco, decoder, decoderBuffer, taskConfig ) {

			const attributeIDs = taskConfig.attributeIDs;
			const attributeTypes = taskConfig.attributeTypes;
			let dracoGeometry;
			let decodingStatus;
			const geometryType = decoder.GetEncodedGeometryType( decoderBuffer );

			if ( geometryType === draco.TRIANGULAR_MESH ) {

				dracoGeometry = new draco.Mesh();
				decodingStatus = decoder.DecodeBufferToMesh( decoderBuffer, dracoGeometry );

			} else if ( geometryType === draco.POINT_CLOUD ) {

				dracoGeometry = new draco.PointCloud();
				decodingStatus = decoder.DecodeBufferToPointCloud( decoderBuffer, dracoGeometry );

			} else {

				throw new Error( 'THREE.DRACOLoader: Unexpected geometry type.' );

			}

			if ( ! decodingStatus.ok() || dracoGeometry.ptr === 0 ) {

				throw new Error( 'THREE.DRACOLoader: Decoding failed: ' + decodingStatus.error_msg() );

			}

			const geometry = {
				index: null,
				attributes: []
			}; // Gather all vertex attributes.

			for ( const attributeName in attributeIDs ) {

				const attributeType = self[ attributeTypes[ attributeName ] ];
				let attribute;
				let attributeID; // A Draco file may be created with default vertex attributes, whose attribute IDs
				// are mapped 1:1 from their semantic name (POSITION, NORMAL, ...). Alternatively,
				// a Draco file may contain a custom set of attributes, identified by known unique
				// IDs. glTF files always do the latter, and `.drc` files typically do the former.

				if ( taskConfig.useUniqueIDs ) {

					attributeID = attributeIDs[ attributeName ];
					attribute = decoder.GetAttributeByUniqueId( dracoGeometry, attributeID );

				} else {

					attributeID = decoder.GetAttributeId( dracoGeometry, draco[ attributeIDs[ attributeName ] ] );
					if ( attributeID === - 1 ) continue;
					attribute = decoder.GetAttribute( dracoGeometry, attributeID );

				}

				geometry.attributes.push( decodeAttribute( draco, decoder, dracoGeometry, attributeName, attributeType, attribute ) );

			} // Add index.


			if ( geometryType === draco.TRIANGULAR_MESH ) {

				geometry.index = decodeIndex( draco, decoder, dracoGeometry );

			}

			draco.destroy( dracoGeometry );
			return geometry;

		}

		function decodeIndex( draco, decoder, dracoGeometry ) {

			const numFaces = dracoGeometry.num_faces();
			const numIndices = numFaces * 3;
			const byteLength = numIndices * 4;

			const ptr = draco._malloc( byteLength );

			decoder.GetTrianglesUInt32Array( dracoGeometry, byteLength, ptr );
			const index = new Uint32Array( draco.HEAPF32.buffer, ptr, numIndices ).slice();

			draco._free( ptr );

			return {
				array: index,
				itemSize: 1
			};

		}

		function decodeAttribute( draco, decoder, dracoGeometry, attributeName, attributeType, attribute ) {

			const numComponents = attribute.num_components();
			const numPoints = dracoGeometry.num_points();
			const numValues = numPoints * numComponents;
			const byteLength = numValues * attributeType.BYTES_PER_ELEMENT;
			const dataType = getDracoDataType( draco, attributeType );

			const ptr = draco._malloc( byteLength );

			decoder.GetAttributeDataArrayForAllPoints( dracoGeometry, attribute, dataType, byteLength, ptr );
			const array = new attributeType( draco.HEAPF32.buffer, ptr, numValues ).slice();

			draco._free( ptr );

			return {
				name: attributeName,
				array: array,
				itemSize: numComponents
			};

		}

		function getDracoDataType( draco, attributeType ) {

			switch ( attributeType ) {

				case Float32Array:
					return draco.DT_FLOAT32;

				case Int8Array:
					return draco.DT_INT8;

				case Int16Array:
					return draco.DT_INT16;

				case Int32Array:
					return draco.DT_INT32;

				case Uint8Array:
					return draco.DT_UINT8;

				case Uint16Array:
					return draco.DT_UINT16;

				case Uint32Array:
					return draco.DT_UINT32;

			}

		}

	}

	THREE.DRACOLoader = DRACOLoader;

} )();

},{}],60:[function(require,module,exports){
( function () {

	class GLTFLoader extends THREE.Loader {

		constructor( manager ) {

			super( manager );
			this.dracoLoader = null;
			this.ktx2Loader = null;
			this.meshoptDecoder = null;
			this.pluginCallbacks = [];
			this.register( function ( parser ) {

				return new GLTFMaterialsClearcoatExtension( parser );

			} );
			this.register( function ( parser ) {

				return new GLTFTextureBasisUExtension( parser );

			} );
			this.register( function ( parser ) {

				return new GLTFTextureWebPExtension( parser );

			} );
			this.register( function ( parser ) {

				return new GLTFMaterialsTransmissionExtension( parser );

			} );
			this.register( function ( parser ) {

				return new GLTFMaterialsVolumeExtension( parser );

			} );
			this.register( function ( parser ) {

				return new GLTFMaterialsIorExtension( parser );

			} );
			this.register( function ( parser ) {

				return new GLTFMaterialsSpecularExtension( parser );

			} );
			this.register( function ( parser ) {

				return new GLTFLightsExtension( parser );

			} );
			this.register( function ( parser ) {

				return new GLTFMeshoptCompression( parser );

			} );

		}

		load( url, onLoad, onProgress, onError ) {

			const scope = this;
			let resourcePath;

			if ( this.resourcePath !== '' ) {

				resourcePath = this.resourcePath;

			} else if ( this.path !== '' ) {

				resourcePath = this.path;

			} else {

				resourcePath = THREE.LoaderUtils.extractUrlBase( url );

			} // Tells the LoadingManager to track an extra item, which resolves after
			// the model is fully loaded. This means the count of items loaded will
			// be incorrect, but ensures manager.onLoad() does not fire early.


			this.manager.itemStart( url );

			const _onError = function ( e ) {

				if ( onError ) {

					onError( e );

				} else {

					console.error( e );

				}

				scope.manager.itemError( url );
				scope.manager.itemEnd( url );

			};

			const loader = new THREE.FileLoader( this.manager );
			loader.setPath( this.path );
			loader.setResponseType( 'arraybuffer' );
			loader.setRequestHeader( this.requestHeader );
			loader.setWithCredentials( this.withCredentials );
			loader.load( url, function ( data ) {

				try {

					scope.parse( data, resourcePath, function ( gltf ) {

						onLoad( gltf );
						scope.manager.itemEnd( url );

					}, _onError );

				} catch ( e ) {

					_onError( e );

				}

			}, onProgress, _onError );

		}

		setDRACOLoader( dracoLoader ) {

			this.dracoLoader = dracoLoader;
			return this;

		}

		setDDSLoader() {

			throw new Error( 'THREE.GLTFLoader: "MSFT_texture_dds" no longer supported. Please update to "KHR_texture_basisu".' );

		}

		setKTX2Loader( ktx2Loader ) {

			this.ktx2Loader = ktx2Loader;
			return this;

		}

		setMeshoptDecoder( meshoptDecoder ) {

			this.meshoptDecoder = meshoptDecoder;
			return this;

		}

		register( callback ) {

			if ( this.pluginCallbacks.indexOf( callback ) === - 1 ) {

				this.pluginCallbacks.push( callback );

			}

			return this;

		}

		unregister( callback ) {

			if ( this.pluginCallbacks.indexOf( callback ) !== - 1 ) {

				this.pluginCallbacks.splice( this.pluginCallbacks.indexOf( callback ), 1 );

			}

			return this;

		}

		parse( data, path, onLoad, onError ) {

			let content;
			const extensions = {};
			const plugins = {};

			if ( typeof data === 'string' ) {

				content = data;

			} else {

				const magic = THREE.LoaderUtils.decodeText( new Uint8Array( data, 0, 4 ) );

				if ( magic === BINARY_EXTENSION_HEADER_MAGIC ) {

					try {

						extensions[ EXTENSIONS.KHR_BINARY_GLTF ] = new GLTFBinaryExtension( data );

					} catch ( error ) {

						if ( onError ) onError( error );
						return;

					}

					content = extensions[ EXTENSIONS.KHR_BINARY_GLTF ].content;

				} else {

					content = THREE.LoaderUtils.decodeText( new Uint8Array( data ) );

				}

			}

			const json = JSON.parse( content );

			if ( json.asset === undefined || json.asset.version[ 0 ] < 2 ) {

				if ( onError ) onError( new Error( 'THREE.GLTFLoader: Unsupported asset. glTF versions >=2.0 are supported.' ) );
				return;

			}

			const parser = new GLTFParser( json, {
				path: path || this.resourcePath || '',
				crossOrigin: this.crossOrigin,
				requestHeader: this.requestHeader,
				manager: this.manager,
				ktx2Loader: this.ktx2Loader,
				meshoptDecoder: this.meshoptDecoder
			} );
			parser.fileLoader.setRequestHeader( this.requestHeader );

			for ( let i = 0; i < this.pluginCallbacks.length; i ++ ) {

				const plugin = this.pluginCallbacks[ i ]( parser );
				plugins[ plugin.name ] = plugin; // Workaround to avoid determining as unknown extension
				// in addUnknownExtensionsToUserData().
				// Remove this workaround if we move all the existing
				// extension handlers to plugin system

				extensions[ plugin.name ] = true;

			}

			if ( json.extensionsUsed ) {

				for ( let i = 0; i < json.extensionsUsed.length; ++ i ) {

					const extensionName = json.extensionsUsed[ i ];
					const extensionsRequired = json.extensionsRequired || [];

					switch ( extensionName ) {

						case EXTENSIONS.KHR_MATERIALS_UNLIT:
							extensions[ extensionName ] = new GLTFMaterialsUnlitExtension();
							break;

						case EXTENSIONS.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS:
							extensions[ extensionName ] = new GLTFMaterialsPbrSpecularGlossinessExtension();
							break;

						case EXTENSIONS.KHR_DRACO_MESH_COMPRESSION:
							extensions[ extensionName ] = new GLTFDracoMeshCompressionExtension( json, this.dracoLoader );
							break;

						case EXTENSIONS.KHR_TEXTURE_TRANSFORM:
							extensions[ extensionName ] = new GLTFTextureTransformExtension();
							break;

						case EXTENSIONS.KHR_MESH_QUANTIZATION:
							extensions[ extensionName ] = new GLTFMeshQuantizationExtension();
							break;

						default:
							if ( extensionsRequired.indexOf( extensionName ) >= 0 && plugins[ extensionName ] === undefined ) {

								console.warn( 'THREE.GLTFLoader: Unknown extension "' + extensionName + '".' );

							}

					}

				}

			}

			parser.setExtensions( extensions );
			parser.setPlugins( plugins );
			parser.parse( onLoad, onError );

		}

	}
	/* GLTFREGISTRY */


	function GLTFRegistry() {

		let objects = {};
		return {
			get: function ( key ) {

				return objects[ key ];

			},
			add: function ( key, object ) {

				objects[ key ] = object;

			},
			remove: function ( key ) {

				delete objects[ key ];

			},
			removeAll: function () {

				objects = {};

			}
		};

	}
	/*********************************/

	/********** EXTENSIONS ***********/

	/*********************************/


	const EXTENSIONS = {
		KHR_BINARY_GLTF: 'KHR_binary_glTF',
		KHR_DRACO_MESH_COMPRESSION: 'KHR_draco_mesh_compression',
		KHR_LIGHTS_PUNCTUAL: 'KHR_lights_punctual',
		KHR_MATERIALS_CLEARCOAT: 'KHR_materials_clearcoat',
		KHR_MATERIALS_IOR: 'KHR_materials_ior',
		KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS: 'KHR_materials_pbrSpecularGlossiness',
		KHR_MATERIALS_SPECULAR: 'KHR_materials_specular',
		KHR_MATERIALS_TRANSMISSION: 'KHR_materials_transmission',
		KHR_MATERIALS_UNLIT: 'KHR_materials_unlit',
		KHR_MATERIALS_VOLUME: 'KHR_materials_volume',
		KHR_TEXTURE_BASISU: 'KHR_texture_basisu',
		KHR_TEXTURE_TRANSFORM: 'KHR_texture_transform',
		KHR_MESH_QUANTIZATION: 'KHR_mesh_quantization',
		EXT_TEXTURE_WEBP: 'EXT_texture_webp',
		EXT_MESHOPT_COMPRESSION: 'EXT_meshopt_compression'
	};
	/**
 * Punctual Lights Extension
 *
 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_lights_punctual
 */

	class GLTFLightsExtension {

		constructor( parser ) {

			this.parser = parser;
			this.name = EXTENSIONS.KHR_LIGHTS_PUNCTUAL; // THREE.Object3D instance caches

			this.cache = {
				refs: {},
				uses: {}
			};

		}

		_markDefs() {

			const parser = this.parser;
			const nodeDefs = this.parser.json.nodes || [];

			for ( let nodeIndex = 0, nodeLength = nodeDefs.length; nodeIndex < nodeLength; nodeIndex ++ ) {

				const nodeDef = nodeDefs[ nodeIndex ];

				if ( nodeDef.extensions && nodeDef.extensions[ this.name ] && nodeDef.extensions[ this.name ].light !== undefined ) {

					parser._addNodeRef( this.cache, nodeDef.extensions[ this.name ].light );

				}

			}

		}

		_loadLight( lightIndex ) {

			const parser = this.parser;
			const cacheKey = 'light:' + lightIndex;
			let dependency = parser.cache.get( cacheKey );
			if ( dependency ) return dependency;
			const json = parser.json;
			const extensions = json.extensions && json.extensions[ this.name ] || {};
			const lightDefs = extensions.lights || [];
			const lightDef = lightDefs[ lightIndex ];
			let lightNode;
			const color = new THREE.Color( 0xffffff );
			if ( lightDef.color !== undefined ) color.fromArray( lightDef.color );
			const range = lightDef.range !== undefined ? lightDef.range : 0;

			switch ( lightDef.type ) {

				case 'directional':
					lightNode = new THREE.DirectionalLight( color );
					lightNode.target.position.set( 0, 0, - 1 );
					lightNode.add( lightNode.target );
					break;

				case 'point':
					lightNode = new THREE.PointLight( color );
					lightNode.distance = range;
					break;

				case 'spot':
					lightNode = new THREE.SpotLight( color );
					lightNode.distance = range; // Handle spotlight properties.

					lightDef.spot = lightDef.spot || {};
					lightDef.spot.innerConeAngle = lightDef.spot.innerConeAngle !== undefined ? lightDef.spot.innerConeAngle : 0;
					lightDef.spot.outerConeAngle = lightDef.spot.outerConeAngle !== undefined ? lightDef.spot.outerConeAngle : Math.PI / 4.0;
					lightNode.angle = lightDef.spot.outerConeAngle;
					lightNode.penumbra = 1.0 - lightDef.spot.innerConeAngle / lightDef.spot.outerConeAngle;
					lightNode.target.position.set( 0, 0, - 1 );
					lightNode.add( lightNode.target );
					break;

				default:
					throw new Error( 'THREE.GLTFLoader: Unexpected light type: ' + lightDef.type );

			} // Some lights (e.g. spot) default to a position other than the origin. Reset the position
			// here, because node-level parsing will only override position if explicitly specified.


			lightNode.position.set( 0, 0, 0 );
			lightNode.decay = 2;
			if ( lightDef.intensity !== undefined ) lightNode.intensity = lightDef.intensity;
			lightNode.name = parser.createUniqueName( lightDef.name || 'light_' + lightIndex );
			dependency = Promise.resolve( lightNode );
			parser.cache.add( cacheKey, dependency );
			return dependency;

		}

		createNodeAttachment( nodeIndex ) {

			const self = this;
			const parser = this.parser;
			const json = parser.json;
			const nodeDef = json.nodes[ nodeIndex ];
			const lightDef = nodeDef.extensions && nodeDef.extensions[ this.name ] || {};
			const lightIndex = lightDef.light;
			if ( lightIndex === undefined ) return null;
			return this._loadLight( lightIndex ).then( function ( light ) {

				return parser._getNodeRef( self.cache, lightIndex, light );

			} );

		}

	}
	/**
 * Unlit Materials Extension
 *
 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_unlit
 */


	class GLTFMaterialsUnlitExtension {

		constructor() {

			this.name = EXTENSIONS.KHR_MATERIALS_UNLIT;

		}

		getMaterialType() {

			return THREE.MeshBasicMaterial;

		}

		extendParams( materialParams, materialDef, parser ) {

			const pending = [];
			materialParams.color = new THREE.Color( 1.0, 1.0, 1.0 );
			materialParams.opacity = 1.0;
			const metallicRoughness = materialDef.pbrMetallicRoughness;

			if ( metallicRoughness ) {

				if ( Array.isArray( metallicRoughness.baseColorFactor ) ) {

					const array = metallicRoughness.baseColorFactor;
					materialParams.color.fromArray( array );
					materialParams.opacity = array[ 3 ];

				}

				if ( metallicRoughness.baseColorTexture !== undefined ) {

					pending.push( parser.assignTexture( materialParams, 'map', metallicRoughness.baseColorTexture ) );

				}

			}

			return Promise.all( pending );

		}

	}
	/**
 * Clearcoat Materials Extension
 *
 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_clearcoat
 */


	class GLTFMaterialsClearcoatExtension {

		constructor( parser ) {

			this.parser = parser;
			this.name = EXTENSIONS.KHR_MATERIALS_CLEARCOAT;

		}

		getMaterialType( materialIndex ) {

			const parser = this.parser;
			const materialDef = parser.json.materials[ materialIndex ];
			if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) return null;
			return THREE.MeshPhysicalMaterial;

		}

		extendMaterialParams( materialIndex, materialParams ) {

			const parser = this.parser;
			const materialDef = parser.json.materials[ materialIndex ];

			if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) {

				return Promise.resolve();

			}

			const pending = [];
			const extension = materialDef.extensions[ this.name ];

			if ( extension.clearcoatFactor !== undefined ) {

				materialParams.clearcoat = extension.clearcoatFactor;

			}

			if ( extension.clearcoatTexture !== undefined ) {

				pending.push( parser.assignTexture( materialParams, 'clearcoatMap', extension.clearcoatTexture ) );

			}

			if ( extension.clearcoatRoughnessFactor !== undefined ) {

				materialParams.clearcoatRoughness = extension.clearcoatRoughnessFactor;

			}

			if ( extension.clearcoatRoughnessTexture !== undefined ) {

				pending.push( parser.assignTexture( materialParams, 'clearcoatRoughnessMap', extension.clearcoatRoughnessTexture ) );

			}

			if ( extension.clearcoatNormalTexture !== undefined ) {

				pending.push( parser.assignTexture( materialParams, 'clearcoatNormalMap', extension.clearcoatNormalTexture ) );

				if ( extension.clearcoatNormalTexture.scale !== undefined ) {

					const scale = extension.clearcoatNormalTexture.scale;
					materialParams.clearcoatNormalScale = new THREE.Vector2( scale, scale );

				}

			}

			return Promise.all( pending );

		}

	}
	/**
 * Transmission Materials Extension
 *
 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_transmission
 * Draft: https://github.com/KhronosGroup/glTF/pull/1698
 */


	class GLTFMaterialsTransmissionExtension {

		constructor( parser ) {

			this.parser = parser;
			this.name = EXTENSIONS.KHR_MATERIALS_TRANSMISSION;

		}

		getMaterialType( materialIndex ) {

			const parser = this.parser;
			const materialDef = parser.json.materials[ materialIndex ];
			if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) return null;
			return THREE.MeshPhysicalMaterial;

		}

		extendMaterialParams( materialIndex, materialParams ) {

			const parser = this.parser;
			const materialDef = parser.json.materials[ materialIndex ];

			if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) {

				return Promise.resolve();

			}

			const pending = [];
			const extension = materialDef.extensions[ this.name ];

			if ( extension.transmissionFactor !== undefined ) {

				materialParams.transmission = extension.transmissionFactor;

			}

			if ( extension.transmissionTexture !== undefined ) {

				pending.push( parser.assignTexture( materialParams, 'transmissionMap', extension.transmissionTexture ) );

			}

			return Promise.all( pending );

		}

	}
	/**
 * Materials Volume Extension
 *
 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_volume
 */


	class GLTFMaterialsVolumeExtension {

		constructor( parser ) {

			this.parser = parser;
			this.name = EXTENSIONS.KHR_MATERIALS_VOLUME;

		}

		getMaterialType( materialIndex ) {

			const parser = this.parser;
			const materialDef = parser.json.materials[ materialIndex ];
			if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) return null;
			return THREE.MeshPhysicalMaterial;

		}

		extendMaterialParams( materialIndex, materialParams ) {

			const parser = this.parser;
			const materialDef = parser.json.materials[ materialIndex ];

			if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) {

				return Promise.resolve();

			}

			const pending = [];
			const extension = materialDef.extensions[ this.name ];
			materialParams.thickness = extension.thicknessFactor !== undefined ? extension.thicknessFactor : 0;

			if ( extension.thicknessTexture !== undefined ) {

				pending.push( parser.assignTexture( materialParams, 'thicknessMap', extension.thicknessTexture ) );

			}

			materialParams.attenuationDistance = extension.attenuationDistance || 0;
			const colorArray = extension.attenuationColor || [ 1, 1, 1 ];
			materialParams.attenuationTint = new THREE.Color( colorArray[ 0 ], colorArray[ 1 ], colorArray[ 2 ] );
			return Promise.all( pending );

		}

	}
	/**
 * Materials ior Extension
 *
 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_ior
 */


	class GLTFMaterialsIorExtension {

		constructor( parser ) {

			this.parser = parser;
			this.name = EXTENSIONS.KHR_MATERIALS_IOR;

		}

		getMaterialType( materialIndex ) {

			const parser = this.parser;
			const materialDef = parser.json.materials[ materialIndex ];
			if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) return null;
			return THREE.MeshPhysicalMaterial;

		}

		extendMaterialParams( materialIndex, materialParams ) {

			const parser = this.parser;
			const materialDef = parser.json.materials[ materialIndex ];

			if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) {

				return Promise.resolve();

			}

			const extension = materialDef.extensions[ this.name ];
			materialParams.ior = extension.ior !== undefined ? extension.ior : 1.5;
			return Promise.resolve();

		}

	}
	/**
 * Materials specular Extension
 *
 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_specular
 */


	class GLTFMaterialsSpecularExtension {

		constructor( parser ) {

			this.parser = parser;
			this.name = EXTENSIONS.KHR_MATERIALS_SPECULAR;

		}

		getMaterialType( materialIndex ) {

			const parser = this.parser;
			const materialDef = parser.json.materials[ materialIndex ];
			if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) return null;
			return THREE.MeshPhysicalMaterial;

		}

		extendMaterialParams( materialIndex, materialParams ) {

			const parser = this.parser;
			const materialDef = parser.json.materials[ materialIndex ];

			if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) {

				return Promise.resolve();

			}

			const pending = [];
			const extension = materialDef.extensions[ this.name ];
			materialParams.specularIntensity = extension.specularFactor !== undefined ? extension.specularFactor : 1.0;

			if ( extension.specularTexture !== undefined ) {

				pending.push( parser.assignTexture( materialParams, 'specularIntensityMap', extension.specularTexture ) );

			}

			const colorArray = extension.specularColorFactor || [ 1, 1, 1 ];
			materialParams.specularTint = new THREE.Color( colorArray[ 0 ], colorArray[ 1 ], colorArray[ 2 ] );

			if ( extension.specularColorTexture !== undefined ) {

				pending.push( parser.assignTexture( materialParams, 'specularTintMap', extension.specularColorTexture ).then( function ( texture ) {

					texture.encoding = THREE.sRGBEncoding;

				} ) );

			}

			return Promise.all( pending );

		}

	}
	/**
 * BasisU THREE.Texture Extension
 *
 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_texture_basisu
 */


	class GLTFTextureBasisUExtension {

		constructor( parser ) {

			this.parser = parser;
			this.name = EXTENSIONS.KHR_TEXTURE_BASISU;

		}

		loadTexture( textureIndex ) {

			const parser = this.parser;
			const json = parser.json;
			const textureDef = json.textures[ textureIndex ];

			if ( ! textureDef.extensions || ! textureDef.extensions[ this.name ] ) {

				return null;

			}

			const extension = textureDef.extensions[ this.name ];
			const source = json.images[ extension.source ];
			const loader = parser.options.ktx2Loader;

			if ( ! loader ) {

				if ( json.extensionsRequired && json.extensionsRequired.indexOf( this.name ) >= 0 ) {

					throw new Error( 'THREE.GLTFLoader: setKTX2Loader must be called before loading KTX2 textures' );

				} else {

					// Assumes that the extension is optional and that a fallback texture is present
					return null;

				}

			}

			return parser.loadTextureImage( textureIndex, source, loader );

		}

	}
	/**
 * WebP THREE.Texture Extension
 *
 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Vendor/EXT_texture_webp
 */


	class GLTFTextureWebPExtension {

		constructor( parser ) {

			this.parser = parser;
			this.name = EXTENSIONS.EXT_TEXTURE_WEBP;
			this.isSupported = null;

		}

		loadTexture( textureIndex ) {

			const name = this.name;
			const parser = this.parser;
			const json = parser.json;
			const textureDef = json.textures[ textureIndex ];

			if ( ! textureDef.extensions || ! textureDef.extensions[ name ] ) {

				return null;

			}

			const extension = textureDef.extensions[ name ];
			const source = json.images[ extension.source ];
			let loader = parser.textureLoader;

			if ( source.uri ) {

				const handler = parser.options.manager.getHandler( source.uri );
				if ( handler !== null ) loader = handler;

			}

			return this.detectSupport().then( function ( isSupported ) {

				if ( isSupported ) return parser.loadTextureImage( textureIndex, source, loader );

				if ( json.extensionsRequired && json.extensionsRequired.indexOf( name ) >= 0 ) {

					throw new Error( 'THREE.GLTFLoader: WebP required by asset but unsupported.' );

				} // Fall back to PNG or JPEG.


				return parser.loadTexture( textureIndex );

			} );

		}

		detectSupport() {

			if ( ! this.isSupported ) {

				this.isSupported = new Promise( function ( resolve ) {

					const image = new Image(); // Lossy test image. Support for lossy images doesn't guarantee support for all
					// WebP images, unfortunately.

					image.src = 'data:image/webp;base64,UklGRiIAAABXRUJQVlA4IBYAAAAwAQCdASoBAAEADsD+JaQAA3AAAAAA';

					image.onload = image.onerror = function () {

						resolve( image.height === 1 );

					};

				} );

			}

			return this.isSupported;

		}

	}
	/**
 * meshopt BufferView Compression Extension
 *
 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Vendor/EXT_meshopt_compression
 */


	class GLTFMeshoptCompression {

		constructor( parser ) {

			this.name = EXTENSIONS.EXT_MESHOPT_COMPRESSION;
			this.parser = parser;

		}

		loadBufferView( index ) {

			const json = this.parser.json;
			const bufferView = json.bufferViews[ index ];

			if ( bufferView.extensions && bufferView.extensions[ this.name ] ) {

				const extensionDef = bufferView.extensions[ this.name ];
				const buffer = this.parser.getDependency( 'buffer', extensionDef.buffer );
				const decoder = this.parser.options.meshoptDecoder;

				if ( ! decoder || ! decoder.supported ) {

					if ( json.extensionsRequired && json.extensionsRequired.indexOf( this.name ) >= 0 ) {

						throw new Error( 'THREE.GLTFLoader: setMeshoptDecoder must be called before loading compressed files' );

					} else {

						// Assumes that the extension is optional and that fallback buffer data is present
						return null;

					}

				}

				return Promise.all( [ buffer, decoder.ready ] ).then( function ( res ) {

					const byteOffset = extensionDef.byteOffset || 0;
					const byteLength = extensionDef.byteLength || 0;
					const count = extensionDef.count;
					const stride = extensionDef.byteStride;
					const result = new ArrayBuffer( count * stride );
					const source = new Uint8Array( res[ 0 ], byteOffset, byteLength );
					decoder.decodeGltfBuffer( new Uint8Array( result ), count, stride, source, extensionDef.mode, extensionDef.filter );
					return result;

				} );

			} else {

				return null;

			}

		}

	}
	/* BINARY EXTENSION */


	const BINARY_EXTENSION_HEADER_MAGIC = 'glTF';
	const BINARY_EXTENSION_HEADER_LENGTH = 12;
	const BINARY_EXTENSION_CHUNK_TYPES = {
		JSON: 0x4E4F534A,
		BIN: 0x004E4942
	};

	class GLTFBinaryExtension {

		constructor( data ) {

			this.name = EXTENSIONS.KHR_BINARY_GLTF;
			this.content = null;
			this.body = null;
			const headerView = new DataView( data, 0, BINARY_EXTENSION_HEADER_LENGTH );
			this.header = {
				magic: THREE.LoaderUtils.decodeText( new Uint8Array( data.slice( 0, 4 ) ) ),
				version: headerView.getUint32( 4, true ),
				length: headerView.getUint32( 8, true )
			};

			if ( this.header.magic !== BINARY_EXTENSION_HEADER_MAGIC ) {

				throw new Error( 'THREE.GLTFLoader: Unsupported glTF-Binary header.' );

			} else if ( this.header.version < 2.0 ) {

				throw new Error( 'THREE.GLTFLoader: Legacy binary file detected.' );

			}

			const chunkContentsLength = this.header.length - BINARY_EXTENSION_HEADER_LENGTH;
			const chunkView = new DataView( data, BINARY_EXTENSION_HEADER_LENGTH );
			let chunkIndex = 0;

			while ( chunkIndex < chunkContentsLength ) {

				const chunkLength = chunkView.getUint32( chunkIndex, true );
				chunkIndex += 4;
				const chunkType = chunkView.getUint32( chunkIndex, true );
				chunkIndex += 4;

				if ( chunkType === BINARY_EXTENSION_CHUNK_TYPES.JSON ) {

					const contentArray = new Uint8Array( data, BINARY_EXTENSION_HEADER_LENGTH + chunkIndex, chunkLength );
					this.content = THREE.LoaderUtils.decodeText( contentArray );

				} else if ( chunkType === BINARY_EXTENSION_CHUNK_TYPES.BIN ) {

					const byteOffset = BINARY_EXTENSION_HEADER_LENGTH + chunkIndex;
					this.body = data.slice( byteOffset, byteOffset + chunkLength );

				} // Clients must ignore chunks with unknown types.


				chunkIndex += chunkLength;

			}

			if ( this.content === null ) {

				throw new Error( 'THREE.GLTFLoader: JSON content not found.' );

			}

		}

	}
	/**
 * DRACO THREE.Mesh Compression Extension
 *
 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_draco_mesh_compression
 */


	class GLTFDracoMeshCompressionExtension {

		constructor( json, dracoLoader ) {

			if ( ! dracoLoader ) {

				throw new Error( 'THREE.GLTFLoader: No DRACOLoader instance provided.' );

			}

			this.name = EXTENSIONS.KHR_DRACO_MESH_COMPRESSION;
			this.json = json;
			this.dracoLoader = dracoLoader;
			this.dracoLoader.preload();

		}

		decodePrimitive( primitive, parser ) {

			const json = this.json;
			const dracoLoader = this.dracoLoader;
			const bufferViewIndex = primitive.extensions[ this.name ].bufferView;
			const gltfAttributeMap = primitive.extensions[ this.name ].attributes;
			const threeAttributeMap = {};
			const attributeNormalizedMap = {};
			const attributeTypeMap = {};

			for ( const attributeName in gltfAttributeMap ) {

				const threeAttributeName = ATTRIBUTES[ attributeName ] || attributeName.toLowerCase();
				threeAttributeMap[ threeAttributeName ] = gltfAttributeMap[ attributeName ];

			}

			for ( const attributeName in primitive.attributes ) {

				const threeAttributeName = ATTRIBUTES[ attributeName ] || attributeName.toLowerCase();

				if ( gltfAttributeMap[ attributeName ] !== undefined ) {

					const accessorDef = json.accessors[ primitive.attributes[ attributeName ] ];
					const componentType = WEBGL_COMPONENT_TYPES[ accessorDef.componentType ];
					attributeTypeMap[ threeAttributeName ] = componentType;
					attributeNormalizedMap[ threeAttributeName ] = accessorDef.normalized === true;

				}

			}

			return parser.getDependency( 'bufferView', bufferViewIndex ).then( function ( bufferView ) {

				return new Promise( function ( resolve ) {

					dracoLoader.decodeDracoFile( bufferView, function ( geometry ) {

						for ( const attributeName in geometry.attributes ) {

							const attribute = geometry.attributes[ attributeName ];
							const normalized = attributeNormalizedMap[ attributeName ];
							if ( normalized !== undefined ) attribute.normalized = normalized;

						}

						resolve( geometry );

					}, threeAttributeMap, attributeTypeMap );

				} );

			} );

		}

	}
	/**
 * THREE.Texture Transform Extension
 *
 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_texture_transform
 */


	class GLTFTextureTransformExtension {

		constructor() {

			this.name = EXTENSIONS.KHR_TEXTURE_TRANSFORM;

		}

		extendTexture( texture, transform ) {

			if ( transform.texCoord !== undefined ) {

				console.warn( 'THREE.GLTFLoader: Custom UV sets in "' + this.name + '" extension not yet supported.' );

			}

			if ( transform.offset === undefined && transform.rotation === undefined && transform.scale === undefined ) {

				// See https://github.com/mrdoob/three.js/issues/21819.
				return texture;

			}

			texture = texture.clone();

			if ( transform.offset !== undefined ) {

				texture.offset.fromArray( transform.offset );

			}

			if ( transform.rotation !== undefined ) {

				texture.rotation = transform.rotation;

			}

			if ( transform.scale !== undefined ) {

				texture.repeat.fromArray( transform.scale );

			}

			texture.needsUpdate = true;
			return texture;

		}

	}
	/**
 * Specular-Glossiness Extension
 *
 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_pbrSpecularGlossiness
 */

	/**
 * A sub class of StandardMaterial with some of the functionality
 * changed via the `onBeforeCompile` callback
 * @pailhead
 */


	class GLTFMeshStandardSGMaterial extends THREE.MeshStandardMaterial {

		constructor( params ) {

			super();
			this.isGLTFSpecularGlossinessMaterial = true; //various chunks that need replacing

			const specularMapParsFragmentChunk = [ '#ifdef USE_SPECULARMAP', '	uniform sampler2D specularMap;', '#endif' ].join( '\n' );
			const glossinessMapParsFragmentChunk = [ '#ifdef USE_GLOSSINESSMAP', '	uniform sampler2D glossinessMap;', '#endif' ].join( '\n' );
			const specularMapFragmentChunk = [ 'vec3 specularFactor = specular;', '#ifdef USE_SPECULARMAP', '	vec4 texelSpecular = texture2D( specularMap, vUv );', '	texelSpecular = sRGBToLinear( texelSpecular );', '	// reads channel RGB, compatible with a glTF Specular-Glossiness (RGBA) texture', '	specularFactor *= texelSpecular.rgb;', '#endif' ].join( '\n' );
			const glossinessMapFragmentChunk = [ 'float glossinessFactor = glossiness;', '#ifdef USE_GLOSSINESSMAP', '	vec4 texelGlossiness = texture2D( glossinessMap, vUv );', '	// reads channel A, compatible with a glTF Specular-Glossiness (RGBA) texture', '	glossinessFactor *= texelGlossiness.a;', '#endif' ].join( '\n' );
			const lightPhysicalFragmentChunk = [ 'PhysicalMaterial material;', 'material.diffuseColor = diffuseColor.rgb * ( 1. - max( specularFactor.r, max( specularFactor.g, specularFactor.b ) ) );', 'vec3 dxy = max( abs( dFdx( geometryNormal ) ), abs( dFdy( geometryNormal ) ) );', 'float geometryRoughness = max( max( dxy.x, dxy.y ), dxy.z );', 'material.roughness = max( 1.0 - glossinessFactor, 0.0525 ); // 0.0525 corresponds to the base mip of a 256 cubemap.', 'material.roughness += geometryRoughness;', 'material.roughness = min( material.roughness, 1.0 );', 'material.specularColor = specularFactor;' ].join( '\n' );
			const uniforms = {
				specular: {
					value: new THREE.Color().setHex( 0xffffff )
				},
				glossiness: {
					value: 1
				},
				specularMap: {
					value: null
				},
				glossinessMap: {
					value: null
				}
			};
			this._extraUniforms = uniforms;

			this.onBeforeCompile = function ( shader ) {

				for ( const uniformName in uniforms ) {

					shader.uniforms[ uniformName ] = uniforms[ uniformName ];

				}

				shader.fragmentShader = shader.fragmentShader.replace( 'uniform float roughness;', 'uniform vec3 specular;' ).replace( 'uniform float metalness;', 'uniform float glossiness;' ).replace( '#include <roughnessmap_pars_fragment>', specularMapParsFragmentChunk ).replace( '#include <metalnessmap_pars_fragment>', glossinessMapParsFragmentChunk ).replace( '#include <roughnessmap_fragment>', specularMapFragmentChunk ).replace( '#include <metalnessmap_fragment>', glossinessMapFragmentChunk ).replace( '#include <lights_physical_fragment>', lightPhysicalFragmentChunk );

			};

			Object.defineProperties( this, {
				specular: {
					get: function () {

						return uniforms.specular.value;

					},
					set: function ( v ) {

						uniforms.specular.value = v;

					}
				},
				specularMap: {
					get: function () {

						return uniforms.specularMap.value;

					},
					set: function ( v ) {

						uniforms.specularMap.value = v;

						if ( v ) {

							this.defines.USE_SPECULARMAP = ''; // USE_UV is set by the renderer for specular maps

						} else {

							delete this.defines.USE_SPECULARMAP;

						}

					}
				},
				glossiness: {
					get: function () {

						return uniforms.glossiness.value;

					},
					set: function ( v ) {

						uniforms.glossiness.value = v;

					}
				},
				glossinessMap: {
					get: function () {

						return uniforms.glossinessMap.value;

					},
					set: function ( v ) {

						uniforms.glossinessMap.value = v;

						if ( v ) {

							this.defines.USE_GLOSSINESSMAP = '';
							this.defines.USE_UV = '';

						} else {

							delete this.defines.USE_GLOSSINESSMAP;
							delete this.defines.USE_UV;

						}

					}
				}
			} );
			delete this.metalness;
			delete this.roughness;
			delete this.metalnessMap;
			delete this.roughnessMap;
			this.setValues( params );

		}

		copy( source ) {

			super.copy( source );
			this.specularMap = source.specularMap;
			this.specular.copy( source.specular );
			this.glossinessMap = source.glossinessMap;
			this.glossiness = source.glossiness;
			delete this.metalness;
			delete this.roughness;
			delete this.metalnessMap;
			delete this.roughnessMap;
			return this;

		}

	}

	class GLTFMaterialsPbrSpecularGlossinessExtension {

		constructor() {

			this.name = EXTENSIONS.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS;
			this.specularGlossinessParams = [ 'color', 'map', 'lightMap', 'lightMapIntensity', 'aoMap', 'aoMapIntensity', 'emissive', 'emissiveIntensity', 'emissiveMap', 'bumpMap', 'bumpScale', 'normalMap', 'normalMapType', 'displacementMap', 'displacementScale', 'displacementBias', 'specularMap', 'specular', 'glossinessMap', 'glossiness', 'alphaMap', 'envMap', 'envMapIntensity', 'refractionRatio' ];

		}

		getMaterialType() {

			return GLTFMeshStandardSGMaterial;

		}

		extendParams( materialParams, materialDef, parser ) {

			const pbrSpecularGlossiness = materialDef.extensions[ this.name ];
			materialParams.color = new THREE.Color( 1.0, 1.0, 1.0 );
			materialParams.opacity = 1.0;
			const pending = [];

			if ( Array.isArray( pbrSpecularGlossiness.diffuseFactor ) ) {

				const array = pbrSpecularGlossiness.diffuseFactor;
				materialParams.color.fromArray( array );
				materialParams.opacity = array[ 3 ];

			}

			if ( pbrSpecularGlossiness.diffuseTexture !== undefined ) {

				pending.push( parser.assignTexture( materialParams, 'map', pbrSpecularGlossiness.diffuseTexture ) );

			}

			materialParams.emissive = new THREE.Color( 0.0, 0.0, 0.0 );
			materialParams.glossiness = pbrSpecularGlossiness.glossinessFactor !== undefined ? pbrSpecularGlossiness.glossinessFactor : 1.0;
			materialParams.specular = new THREE.Color( 1.0, 1.0, 1.0 );

			if ( Array.isArray( pbrSpecularGlossiness.specularFactor ) ) {

				materialParams.specular.fromArray( pbrSpecularGlossiness.specularFactor );

			}

			if ( pbrSpecularGlossiness.specularGlossinessTexture !== undefined ) {

				const specGlossMapDef = pbrSpecularGlossiness.specularGlossinessTexture;
				pending.push( parser.assignTexture( materialParams, 'glossinessMap', specGlossMapDef ) );
				pending.push( parser.assignTexture( materialParams, 'specularMap', specGlossMapDef ) );

			}

			return Promise.all( pending );

		}

		createMaterial( materialParams ) {

			const material = new GLTFMeshStandardSGMaterial( materialParams );
			material.fog = true;
			material.color = materialParams.color;
			material.map = materialParams.map === undefined ? null : materialParams.map;
			material.lightMap = null;
			material.lightMapIntensity = 1.0;
			material.aoMap = materialParams.aoMap === undefined ? null : materialParams.aoMap;
			material.aoMapIntensity = 1.0;
			material.emissive = materialParams.emissive;
			material.emissiveIntensity = 1.0;
			material.emissiveMap = materialParams.emissiveMap === undefined ? null : materialParams.emissiveMap;
			material.bumpMap = materialParams.bumpMap === undefined ? null : materialParams.bumpMap;
			material.bumpScale = 1;
			material.normalMap = materialParams.normalMap === undefined ? null : materialParams.normalMap;
			material.normalMapType = THREE.TangentSpaceNormalMap;
			if ( materialParams.normalScale ) material.normalScale = materialParams.normalScale;
			material.displacementMap = null;
			material.displacementScale = 1;
			material.displacementBias = 0;
			material.specularMap = materialParams.specularMap === undefined ? null : materialParams.specularMap;
			material.specular = materialParams.specular;
			material.glossinessMap = materialParams.glossinessMap === undefined ? null : materialParams.glossinessMap;
			material.glossiness = materialParams.glossiness;
			material.alphaMap = null;
			material.envMap = materialParams.envMap === undefined ? null : materialParams.envMap;
			material.envMapIntensity = 1.0;
			material.refractionRatio = 0.98;
			return material;

		}

	}
	/**
 * THREE.Mesh Quantization Extension
 *
 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_mesh_quantization
 */


	class GLTFMeshQuantizationExtension {

		constructor() {

			this.name = EXTENSIONS.KHR_MESH_QUANTIZATION;

		}

	}
	/*********************************/

	/********** INTERPOLATION ********/

	/*********************************/
	// Spline Interpolation
	// Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#appendix-c-spline-interpolation


	class GLTFCubicSplineInterpolant extends THREE.Interpolant {

		constructor( parameterPositions, sampleValues, sampleSize, resultBuffer ) {

			super( parameterPositions, sampleValues, sampleSize, resultBuffer );

		}

		copySampleValue_( index ) {

			// Copies a sample value to the result buffer. See description of glTF
			// CUBICSPLINE values layout in interpolate_() function below.
			const result = this.resultBuffer,
				values = this.sampleValues,
				valueSize = this.valueSize,
				offset = index * valueSize * 3 + valueSize;

			for ( let i = 0; i !== valueSize; i ++ ) {

				result[ i ] = values[ offset + i ];

			}

			return result;

		}

	}

	GLTFCubicSplineInterpolant.prototype.beforeStart_ = GLTFCubicSplineInterpolant.prototype.copySampleValue_;
	GLTFCubicSplineInterpolant.prototype.afterEnd_ = GLTFCubicSplineInterpolant.prototype.copySampleValue_;

	GLTFCubicSplineInterpolant.prototype.interpolate_ = function ( i1, t0, t, t1 ) {

		const result = this.resultBuffer;
		const values = this.sampleValues;
		const stride = this.valueSize;
		const stride2 = stride * 2;
		const stride3 = stride * 3;
		const td = t1 - t0;
		const p = ( t - t0 ) / td;
		const pp = p * p;
		const ppp = pp * p;
		const offset1 = i1 * stride3;
		const offset0 = offset1 - stride3;
		const s2 = - 2 * ppp + 3 * pp;
		const s3 = ppp - pp;
		const s0 = 1 - s2;
		const s1 = s3 - pp + p; // Layout of keyframe output values for CUBICSPLINE animations:
		//   [ inTangent_1, splineVertex_1, outTangent_1, inTangent_2, splineVertex_2, ... ]

		for ( let i = 0; i !== stride; i ++ ) {

			const p0 = values[ offset0 + i + stride ]; // splineVertex_k

			const m0 = values[ offset0 + i + stride2 ] * td; // outTangent_k * (t_k+1 - t_k)

			const p1 = values[ offset1 + i + stride ]; // splineVertex_k+1

			const m1 = values[ offset1 + i ] * td; // inTangent_k+1 * (t_k+1 - t_k)

			result[ i ] = s0 * p0 + s1 * m0 + s2 * p1 + s3 * m1;

		}

		return result;

	};

	const _q = new THREE.Quaternion();

	class GLTFCubicSplineQuaternionInterpolant extends GLTFCubicSplineInterpolant {

		interpolate_( i1, t0, t, t1 ) {

			const result = super.interpolate_( i1, t0, t, t1 );

			_q.fromArray( result ).normalize().toArray( result );

			return result;

		}

	}
	/*********************************/

	/********** INTERNALS ************/

	/*********************************/

	/* CONSTANTS */


	const WEBGL_CONSTANTS = {
		FLOAT: 5126,
		//FLOAT_MAT2: 35674,
		FLOAT_MAT3: 35675,
		FLOAT_MAT4: 35676,
		FLOAT_VEC2: 35664,
		FLOAT_VEC3: 35665,
		FLOAT_VEC4: 35666,
		LINEAR: 9729,
		REPEAT: 10497,
		SAMPLER_2D: 35678,
		POINTS: 0,
		LINES: 1,
		LINE_LOOP: 2,
		LINE_STRIP: 3,
		TRIANGLES: 4,
		TRIANGLE_STRIP: 5,
		TRIANGLE_FAN: 6,
		UNSIGNED_BYTE: 5121,
		UNSIGNED_SHORT: 5123
	};
	const WEBGL_COMPONENT_TYPES = {
		5120: Int8Array,
		5121: Uint8Array,
		5122: Int16Array,
		5123: Uint16Array,
		5125: Uint32Array,
		5126: Float32Array
	};
	const WEBGL_FILTERS = {
		9728: THREE.NearestFilter,
		9729: THREE.LinearFilter,
		9984: THREE.NearestMipmapNearestFilter,
		9985: THREE.LinearMipmapNearestFilter,
		9986: THREE.NearestMipmapLinearFilter,
		9987: THREE.LinearMipmapLinearFilter
	};
	const WEBGL_WRAPPINGS = {
		33071: THREE.ClampToEdgeWrapping,
		33648: THREE.MirroredRepeatWrapping,
		10497: THREE.RepeatWrapping
	};
	const WEBGL_TYPE_SIZES = {
		'SCALAR': 1,
		'VEC2': 2,
		'VEC3': 3,
		'VEC4': 4,
		'MAT2': 4,
		'MAT3': 9,
		'MAT4': 16
	};
	const ATTRIBUTES = {
		POSITION: 'position',
		NORMAL: 'normal',
		TANGENT: 'tangent',
		TEXCOORD_0: 'uv',
		TEXCOORD_1: 'uv2',
		COLOR_0: 'color',
		WEIGHTS_0: 'skinWeight',
		JOINTS_0: 'skinIndex'
	};
	const PATH_PROPERTIES = {
		scale: 'scale',
		translation: 'position',
		rotation: 'quaternion',
		weights: 'morphTargetInfluences'
	};
	const INTERPOLATION = {
		CUBICSPLINE: undefined,
		// We use a custom interpolant (GLTFCubicSplineInterpolation) for CUBICSPLINE tracks. Each
		// keyframe track will be initialized with a default interpolation type, then modified.
		LINEAR: THREE.InterpolateLinear,
		STEP: THREE.InterpolateDiscrete
	};
	const ALPHA_MODES = {
		OPAQUE: 'OPAQUE',
		MASK: 'MASK',
		BLEND: 'BLEND'
	};
	/* UTILITY FUNCTIONS */

	function resolveURL( url, path ) {

		// Invalid URL
		if ( typeof url !== 'string' || url === '' ) return ''; // Host Relative URL

		if ( /^https?:\/\//i.test( path ) && /^\//.test( url ) ) {

			path = path.replace( /(^https?:\/\/[^\/]+).*/i, '$1' );

		} // Absolute URL http://,https://,//


		if ( /^(https?:)?\/\//i.test( url ) ) return url; // Data URI

		if ( /^data:.*,.*$/i.test( url ) ) return url; // Blob URL

		if ( /^blob:.*$/i.test( url ) ) return url; // Relative URL

		return path + url;

	}
	/**
 * Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#default-material
 */


	function createDefaultMaterial( cache ) {

		if ( cache[ 'DefaultMaterial' ] === undefined ) {

			cache[ 'DefaultMaterial' ] = new THREE.MeshStandardMaterial( {
				color: 0xFFFFFF,
				emissive: 0x000000,
				metalness: 1,
				roughness: 1,
				transparent: false,
				depthTest: true,
				side: THREE.FrontSide
			} );

		}

		return cache[ 'DefaultMaterial' ];

	}

	function addUnknownExtensionsToUserData( knownExtensions, object, objectDef ) {

		// Add unknown glTF extensions to an object's userData.
		for ( const name in objectDef.extensions ) {

			if ( knownExtensions[ name ] === undefined ) {

				object.userData.gltfExtensions = object.userData.gltfExtensions || {};
				object.userData.gltfExtensions[ name ] = objectDef.extensions[ name ];

			}

		}

	}
	/**
 * @param {Object3D|Material|BufferGeometry} object
 * @param {GLTF.definition} gltfDef
 */


	function assignExtrasToUserData( object, gltfDef ) {

		if ( gltfDef.extras !== undefined ) {

			if ( typeof gltfDef.extras === 'object' ) {

				Object.assign( object.userData, gltfDef.extras );

			} else {

				console.warn( 'THREE.GLTFLoader: Ignoring primitive type .extras, ' + gltfDef.extras );

			}

		}

	}
	/**
 * Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#morph-targets
 *
 * @param {BufferGeometry} geometry
 * @param {Array<GLTF.Target>} targets
 * @param {GLTFParser} parser
 * @return {Promise<BufferGeometry>}
 */


	function addMorphTargets( geometry, targets, parser ) {

		let hasMorphPosition = false;
		let hasMorphNormal = false;

		for ( let i = 0, il = targets.length; i < il; i ++ ) {

			const target = targets[ i ];
			if ( target.POSITION !== undefined ) hasMorphPosition = true;
			if ( target.NORMAL !== undefined ) hasMorphNormal = true;
			if ( hasMorphPosition && hasMorphNormal ) break;

		}

		if ( ! hasMorphPosition && ! hasMorphNormal ) return Promise.resolve( geometry );
		const pendingPositionAccessors = [];
		const pendingNormalAccessors = [];

		for ( let i = 0, il = targets.length; i < il; i ++ ) {

			const target = targets[ i ];

			if ( hasMorphPosition ) {

				const pendingAccessor = target.POSITION !== undefined ? parser.getDependency( 'accessor', target.POSITION ) : geometry.attributes.position;
				pendingPositionAccessors.push( pendingAccessor );

			}

			if ( hasMorphNormal ) {

				const pendingAccessor = target.NORMAL !== undefined ? parser.getDependency( 'accessor', target.NORMAL ) : geometry.attributes.normal;
				pendingNormalAccessors.push( pendingAccessor );

			}

		}

		return Promise.all( [ Promise.all( pendingPositionAccessors ), Promise.all( pendingNormalAccessors ) ] ).then( function ( accessors ) {

			const morphPositions = accessors[ 0 ];
			const morphNormals = accessors[ 1 ];
			if ( hasMorphPosition ) geometry.morphAttributes.position = morphPositions;
			if ( hasMorphNormal ) geometry.morphAttributes.normal = morphNormals;
			geometry.morphTargetsRelative = true;
			return geometry;

		} );

	}
	/**
 * @param {Mesh} mesh
 * @param {GLTF.Mesh} meshDef
 */


	function updateMorphTargets( mesh, meshDef ) {

		mesh.updateMorphTargets();

		if ( meshDef.weights !== undefined ) {

			for ( let i = 0, il = meshDef.weights.length; i < il; i ++ ) {

				mesh.morphTargetInfluences[ i ] = meshDef.weights[ i ];

			}

		} // .extras has user-defined data, so check that .extras.targetNames is an array.


		if ( meshDef.extras && Array.isArray( meshDef.extras.targetNames ) ) {

			const targetNames = meshDef.extras.targetNames;

			if ( mesh.morphTargetInfluences.length === targetNames.length ) {

				mesh.morphTargetDictionary = {};

				for ( let i = 0, il = targetNames.length; i < il; i ++ ) {

					mesh.morphTargetDictionary[ targetNames[ i ] ] = i;

				}

			} else {

				console.warn( 'THREE.GLTFLoader: Invalid extras.targetNames length. Ignoring names.' );

			}

		}

	}

	function createPrimitiveKey( primitiveDef ) {

		const dracoExtension = primitiveDef.extensions && primitiveDef.extensions[ EXTENSIONS.KHR_DRACO_MESH_COMPRESSION ];
		let geometryKey;

		if ( dracoExtension ) {

			geometryKey = 'draco:' + dracoExtension.bufferView + ':' + dracoExtension.indices + ':' + createAttributesKey( dracoExtension.attributes );

		} else {

			geometryKey = primitiveDef.indices + ':' + createAttributesKey( primitiveDef.attributes ) + ':' + primitiveDef.mode;

		}

		return geometryKey;

	}

	function createAttributesKey( attributes ) {

		let attributesKey = '';
		const keys = Object.keys( attributes ).sort();

		for ( let i = 0, il = keys.length; i < il; i ++ ) {

			attributesKey += keys[ i ] + ':' + attributes[ keys[ i ] ] + ';';

		}

		return attributesKey;

	}

	function getNormalizedComponentScale( constructor ) {

		// Reference:
		// https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_mesh_quantization#encoding-quantized-data
		switch ( constructor ) {

			case Int8Array:
				return 1 / 127;

			case Uint8Array:
				return 1 / 255;

			case Int16Array:
				return 1 / 32767;

			case Uint16Array:
				return 1 / 65535;

			default:
				throw new Error( 'THREE.GLTFLoader: Unsupported normalized accessor component type.' );

		}

	}
	/* GLTF PARSER */


	class GLTFParser {

		constructor( json = {}, options = {} ) {

			this.json = json;
			this.extensions = {};
			this.plugins = {};
			this.options = options; // loader object cache

			this.cache = new GLTFRegistry(); // associations between Three.js objects and glTF elements

			this.associations = new Map(); // THREE.BufferGeometry caching

			this.primitiveCache = {}; // THREE.Object3D instance caches

			this.meshCache = {
				refs: {},
				uses: {}
			};
			this.cameraCache = {
				refs: {},
				uses: {}
			};
			this.lightCache = {
				refs: {},
				uses: {}
			};
			this.textureCache = {}; // Track node names, to ensure no duplicates

			this.nodeNamesUsed = {}; // Use an THREE.ImageBitmapLoader if imageBitmaps are supported. Moves much of the
			// expensive work of uploading a texture to the GPU off the main thread.

			if ( typeof createImageBitmap !== 'undefined' && /Firefox/.test( navigator.userAgent ) === false ) {

				this.textureLoader = new THREE.ImageBitmapLoader( this.options.manager );

			} else {

				this.textureLoader = new THREE.TextureLoader( this.options.manager );

			}

			this.textureLoader.setCrossOrigin( this.options.crossOrigin );
			this.textureLoader.setRequestHeader( this.options.requestHeader );
			this.fileLoader = new THREE.FileLoader( this.options.manager );
			this.fileLoader.setResponseType( 'arraybuffer' );

			if ( this.options.crossOrigin === 'use-credentials' ) {

				this.fileLoader.setWithCredentials( true );

			}

		}

		setExtensions( extensions ) {

			this.extensions = extensions;

		}

		setPlugins( plugins ) {

			this.plugins = plugins;

		}

		parse( onLoad, onError ) {

			const parser = this;
			const json = this.json;
			const extensions = this.extensions; // Clear the loader cache

			this.cache.removeAll(); // Mark the special nodes/meshes in json for efficient parse

			this._invokeAll( function ( ext ) {

				return ext._markDefs && ext._markDefs();

			} );

			Promise.all( this._invokeAll( function ( ext ) {

				return ext.beforeRoot && ext.beforeRoot();

			} ) ).then( function () {

				return Promise.all( [ parser.getDependencies( 'scene' ), parser.getDependencies( 'animation' ), parser.getDependencies( 'camera' ) ] );

			} ).then( function ( dependencies ) {

				const result = {
					scene: dependencies[ 0 ][ json.scene || 0 ],
					scenes: dependencies[ 0 ],
					animations: dependencies[ 1 ],
					cameras: dependencies[ 2 ],
					asset: json.asset,
					parser: parser,
					userData: {}
				};
				addUnknownExtensionsToUserData( extensions, result, json );
				assignExtrasToUserData( result, json );
				Promise.all( parser._invokeAll( function ( ext ) {

					return ext.afterRoot && ext.afterRoot( result );

				} ) ).then( function () {

					onLoad( result );

				} );

			} ).catch( onError );

		}
		/**
   * Marks the special nodes/meshes in json for efficient parse.
   */


		_markDefs() {

			const nodeDefs = this.json.nodes || [];
			const skinDefs = this.json.skins || [];
			const meshDefs = this.json.meshes || []; // Nothing in the node definition indicates whether it is a THREE.Bone or an
			// THREE.Object3D. Use the skins' joint references to mark bones.

			for ( let skinIndex = 0, skinLength = skinDefs.length; skinIndex < skinLength; skinIndex ++ ) {

				const joints = skinDefs[ skinIndex ].joints;

				for ( let i = 0, il = joints.length; i < il; i ++ ) {

					nodeDefs[ joints[ i ] ].isBone = true;

				}

			} // Iterate over all nodes, marking references to shared resources,
			// as well as skeleton joints.


			for ( let nodeIndex = 0, nodeLength = nodeDefs.length; nodeIndex < nodeLength; nodeIndex ++ ) {

				const nodeDef = nodeDefs[ nodeIndex ];

				if ( nodeDef.mesh !== undefined ) {

					this._addNodeRef( this.meshCache, nodeDef.mesh ); // Nothing in the mesh definition indicates whether it is
					// a THREE.SkinnedMesh or THREE.Mesh. Use the node's mesh reference
					// to mark THREE.SkinnedMesh if node has skin.


					if ( nodeDef.skin !== undefined ) {

						meshDefs[ nodeDef.mesh ].isSkinnedMesh = true;

					}

				}

				if ( nodeDef.camera !== undefined ) {

					this._addNodeRef( this.cameraCache, nodeDef.camera );

				}

			}

		}
		/**
   * Counts references to shared node / THREE.Object3D resources. These resources
   * can be reused, or "instantiated", at multiple nodes in the scene
   * hierarchy. THREE.Mesh, Camera, and Light instances are instantiated and must
   * be marked. Non-scenegraph resources (like Materials, Geometries, and
   * Textures) can be reused directly and are not marked here.
   *
   * Example: CesiumMilkTruck sample model reuses "Wheel" meshes.
   */


		_addNodeRef( cache, index ) {

			if ( index === undefined ) return;

			if ( cache.refs[ index ] === undefined ) {

				cache.refs[ index ] = cache.uses[ index ] = 0;

			}

			cache.refs[ index ] ++;

		}
		/** Returns a reference to a shared resource, cloning it if necessary. */


		_getNodeRef( cache, index, object ) {

			if ( cache.refs[ index ] <= 1 ) return object;
			const ref = object.clone(); // Propagates mappings to the cloned object, prevents mappings on the
			// original object from being lost.

			const updateMappings = ( original, clone ) => {

				const mappings = this.associations.get( original );

				if ( mappings != null ) {

					this.associations.set( clone, mappings );

				}

				for ( const [ i, child ] of original.children.entries() ) {

					updateMappings( child, clone.children[ i ] );

				}

			};

			updateMappings( object, ref );
			ref.name += '_instance_' + cache.uses[ index ] ++;
			return ref;

		}

		_invokeOne( func ) {

			const extensions = Object.values( this.plugins );
			extensions.push( this );

			for ( let i = 0; i < extensions.length; i ++ ) {

				const result = func( extensions[ i ] );
				if ( result ) return result;

			}

			return null;

		}

		_invokeAll( func ) {

			const extensions = Object.values( this.plugins );
			extensions.unshift( this );
			const pending = [];

			for ( let i = 0; i < extensions.length; i ++ ) {

				const result = func( extensions[ i ] );
				if ( result ) pending.push( result );

			}

			return pending;

		}
		/**
   * Requests the specified dependency asynchronously, with caching.
   * @param {string} type
   * @param {number} index
   * @return {Promise<Object3D|Material|THREE.Texture|AnimationClip|ArrayBuffer|Object>}
   */


		getDependency( type, index ) {

			const cacheKey = type + ':' + index;
			let dependency = this.cache.get( cacheKey );

			if ( ! dependency ) {

				switch ( type ) {

					case 'scene':
						dependency = this.loadScene( index );
						break;

					case 'node':
						dependency = this.loadNode( index );
						break;

					case 'mesh':
						dependency = this._invokeOne( function ( ext ) {

							return ext.loadMesh && ext.loadMesh( index );

						} );
						break;

					case 'accessor':
						dependency = this.loadAccessor( index );
						break;

					case 'bufferView':
						dependency = this._invokeOne( function ( ext ) {

							return ext.loadBufferView && ext.loadBufferView( index );

						} );
						break;

					case 'buffer':
						dependency = this.loadBuffer( index );
						break;

					case 'material':
						dependency = this._invokeOne( function ( ext ) {

							return ext.loadMaterial && ext.loadMaterial( index );

						} );
						break;

					case 'texture':
						dependency = this._invokeOne( function ( ext ) {

							return ext.loadTexture && ext.loadTexture( index );

						} );
						break;

					case 'skin':
						dependency = this.loadSkin( index );
						break;

					case 'animation':
						dependency = this.loadAnimation( index );
						break;

					case 'camera':
						dependency = this.loadCamera( index );
						break;

					default:
						throw new Error( 'Unknown type: ' + type );

				}

				this.cache.add( cacheKey, dependency );

			}

			return dependency;

		}
		/**
   * Requests all dependencies of the specified type asynchronously, with caching.
   * @param {string} type
   * @return {Promise<Array<Object>>}
   */


		getDependencies( type ) {

			let dependencies = this.cache.get( type );

			if ( ! dependencies ) {

				const parser = this;
				const defs = this.json[ type + ( type === 'mesh' ? 'es' : 's' ) ] || [];
				dependencies = Promise.all( defs.map( function ( def, index ) {

					return parser.getDependency( type, index );

				} ) );
				this.cache.add( type, dependencies );

			}

			return dependencies;

		}
		/**
   * Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#buffers-and-buffer-views
   * @param {number} bufferIndex
   * @return {Promise<ArrayBuffer>}
   */


		loadBuffer( bufferIndex ) {

			const bufferDef = this.json.buffers[ bufferIndex ];
			const loader = this.fileLoader;

			if ( bufferDef.type && bufferDef.type !== 'arraybuffer' ) {

				throw new Error( 'THREE.GLTFLoader: ' + bufferDef.type + ' buffer type is not supported.' );

			} // If present, GLB container is required to be the first buffer.


			if ( bufferDef.uri === undefined && bufferIndex === 0 ) {

				return Promise.resolve( this.extensions[ EXTENSIONS.KHR_BINARY_GLTF ].body );

			}

			const options = this.options;
			return new Promise( function ( resolve, reject ) {

				loader.load( resolveURL( bufferDef.uri, options.path ), resolve, undefined, function () {

					reject( new Error( 'THREE.GLTFLoader: Failed to load buffer "' + bufferDef.uri + '".' ) );

				} );

			} );

		}
		/**
   * Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#buffers-and-buffer-views
   * @param {number} bufferViewIndex
   * @return {Promise<ArrayBuffer>}
   */


		loadBufferView( bufferViewIndex ) {

			const bufferViewDef = this.json.bufferViews[ bufferViewIndex ];
			return this.getDependency( 'buffer', bufferViewDef.buffer ).then( function ( buffer ) {

				const byteLength = bufferViewDef.byteLength || 0;
				const byteOffset = bufferViewDef.byteOffset || 0;
				return buffer.slice( byteOffset, byteOffset + byteLength );

			} );

		}
		/**
   * Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#accessors
   * @param {number} accessorIndex
   * @return {Promise<BufferAttribute|InterleavedBufferAttribute>}
   */


		loadAccessor( accessorIndex ) {

			const parser = this;
			const json = this.json;
			const accessorDef = this.json.accessors[ accessorIndex ];

			if ( accessorDef.bufferView === undefined && accessorDef.sparse === undefined ) {

				// Ignore empty accessors, which may be used to declare runtime
				// information about attributes coming from another source (e.g. Draco
				// compression extension).
				return Promise.resolve( null );

			}

			const pendingBufferViews = [];

			if ( accessorDef.bufferView !== undefined ) {

				pendingBufferViews.push( this.getDependency( 'bufferView', accessorDef.bufferView ) );

			} else {

				pendingBufferViews.push( null );

			}

			if ( accessorDef.sparse !== undefined ) {

				pendingBufferViews.push( this.getDependency( 'bufferView', accessorDef.sparse.indices.bufferView ) );
				pendingBufferViews.push( this.getDependency( 'bufferView', accessorDef.sparse.values.bufferView ) );

			}

			return Promise.all( pendingBufferViews ).then( function ( bufferViews ) {

				const bufferView = bufferViews[ 0 ];
				const itemSize = WEBGL_TYPE_SIZES[ accessorDef.type ];
				const TypedArray = WEBGL_COMPONENT_TYPES[ accessorDef.componentType ]; // For VEC3: itemSize is 3, elementBytes is 4, itemBytes is 12.

				const elementBytes = TypedArray.BYTES_PER_ELEMENT;
				const itemBytes = elementBytes * itemSize;
				const byteOffset = accessorDef.byteOffset || 0;
				const byteStride = accessorDef.bufferView !== undefined ? json.bufferViews[ accessorDef.bufferView ].byteStride : undefined;
				const normalized = accessorDef.normalized === true;
				let array, bufferAttribute; // The buffer is not interleaved if the stride is the item size in bytes.

				if ( byteStride && byteStride !== itemBytes ) {

					// Each "slice" of the buffer, as defined by 'count' elements of 'byteStride' bytes, gets its own THREE.InterleavedBuffer
					// This makes sure that IBA.count reflects accessor.count properly
					const ibSlice = Math.floor( byteOffset / byteStride );
					const ibCacheKey = 'InterleavedBuffer:' + accessorDef.bufferView + ':' + accessorDef.componentType + ':' + ibSlice + ':' + accessorDef.count;
					let ib = parser.cache.get( ibCacheKey );

					if ( ! ib ) {

						array = new TypedArray( bufferView, ibSlice * byteStride, accessorDef.count * byteStride / elementBytes ); // Integer parameters to IB/IBA are in array elements, not bytes.

						ib = new THREE.InterleavedBuffer( array, byteStride / elementBytes );
						parser.cache.add( ibCacheKey, ib );

					}

					bufferAttribute = new THREE.InterleavedBufferAttribute( ib, itemSize, byteOffset % byteStride / elementBytes, normalized );

				} else {

					if ( bufferView === null ) {

						array = new TypedArray( accessorDef.count * itemSize );

					} else {

						array = new TypedArray( bufferView, byteOffset, accessorDef.count * itemSize );

					}

					bufferAttribute = new THREE.BufferAttribute( array, itemSize, normalized );

				} // https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#sparse-accessors


				if ( accessorDef.sparse !== undefined ) {

					const itemSizeIndices = WEBGL_TYPE_SIZES.SCALAR;
					const TypedArrayIndices = WEBGL_COMPONENT_TYPES[ accessorDef.sparse.indices.componentType ];
					const byteOffsetIndices = accessorDef.sparse.indices.byteOffset || 0;
					const byteOffsetValues = accessorDef.sparse.values.byteOffset || 0;
					const sparseIndices = new TypedArrayIndices( bufferViews[ 1 ], byteOffsetIndices, accessorDef.sparse.count * itemSizeIndices );
					const sparseValues = new TypedArray( bufferViews[ 2 ], byteOffsetValues, accessorDef.sparse.count * itemSize );

					if ( bufferView !== null ) {

						// Avoid modifying the original ArrayBuffer, if the bufferView wasn't initialized with zeroes.
						bufferAttribute = new THREE.BufferAttribute( bufferAttribute.array.slice(), bufferAttribute.itemSize, bufferAttribute.normalized );

					}

					for ( let i = 0, il = sparseIndices.length; i < il; i ++ ) {

						const index = sparseIndices[ i ];
						bufferAttribute.setX( index, sparseValues[ i * itemSize ] );
						if ( itemSize >= 2 ) bufferAttribute.setY( index, sparseValues[ i * itemSize + 1 ] );
						if ( itemSize >= 3 ) bufferAttribute.setZ( index, sparseValues[ i * itemSize + 2 ] );
						if ( itemSize >= 4 ) bufferAttribute.setW( index, sparseValues[ i * itemSize + 3 ] );
						if ( itemSize >= 5 ) throw new Error( 'THREE.GLTFLoader: Unsupported itemSize in sparse THREE.BufferAttribute.' );

					}

				}

				return bufferAttribute;

			} );

		}
		/**
   * Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#textures
   * @param {number} textureIndex
   * @return {Promise<THREE.Texture>}
   */


		loadTexture( textureIndex ) {

			const json = this.json;
			const options = this.options;
			const textureDef = json.textures[ textureIndex ];
			const source = json.images[ textureDef.source ];
			let loader = this.textureLoader;

			if ( source.uri ) {

				const handler = options.manager.getHandler( source.uri );
				if ( handler !== null ) loader = handler;

			}

			return this.loadTextureImage( textureIndex, source, loader );

		}

		loadTextureImage( textureIndex, source, loader ) {

			const parser = this;
			const json = this.json;
			const options = this.options;
			const textureDef = json.textures[ textureIndex ];
			const cacheKey = ( source.uri || source.bufferView ) + ':' + textureDef.sampler;

			if ( this.textureCache[ cacheKey ] ) {

				// See https://github.com/mrdoob/three.js/issues/21559.
				return this.textureCache[ cacheKey ];

			}

			const URL = self.URL || self.webkitURL;
			let sourceURI = source.uri || '';
			let isObjectURL = false;

			if ( source.bufferView !== undefined ) {

				// Load binary image data from bufferView, if provided.
				sourceURI = parser.getDependency( 'bufferView', source.bufferView ).then( function ( bufferView ) {

					isObjectURL = true;
					const blob = new Blob( [ bufferView ], {
						type: source.mimeType
					} );
					sourceURI = URL.createObjectURL( blob );
					return sourceURI;

				} );

			} else if ( source.uri === undefined ) {

				throw new Error( 'THREE.GLTFLoader: Image ' + textureIndex + ' is missing URI and bufferView' );

			}

			const promise = Promise.resolve( sourceURI ).then( function ( sourceURI ) {

				return new Promise( function ( resolve, reject ) {

					let onLoad = resolve;

					if ( loader.isImageBitmapLoader === true ) {

						onLoad = function ( imageBitmap ) {

							const texture = new THREE.Texture( imageBitmap );
							texture.needsUpdate = true;
							resolve( texture );

						};

					}

					loader.load( resolveURL( sourceURI, options.path ), onLoad, undefined, reject );

				} );

			} ).then( function ( texture ) {

				// Clean up resources and configure THREE.Texture.
				if ( isObjectURL === true ) {

					URL.revokeObjectURL( sourceURI );

				}

				texture.flipY = false;
				if ( textureDef.name ) texture.name = textureDef.name;
				const samplers = json.samplers || {};
				const sampler = samplers[ textureDef.sampler ] || {};
				texture.magFilter = WEBGL_FILTERS[ sampler.magFilter ] || THREE.LinearFilter;
				texture.minFilter = WEBGL_FILTERS[ sampler.minFilter ] || THREE.LinearMipmapLinearFilter;
				texture.wrapS = WEBGL_WRAPPINGS[ sampler.wrapS ] || THREE.RepeatWrapping;
				texture.wrapT = WEBGL_WRAPPINGS[ sampler.wrapT ] || THREE.RepeatWrapping;
				parser.associations.set( texture, {
					textures: textureIndex
				} );
				return texture;

			} ).catch( function () {

				console.error( 'THREE.GLTFLoader: Couldn\'t load texture', sourceURI );
				return null;

			} );
			this.textureCache[ cacheKey ] = promise;
			return promise;

		}
		/**
   * Asynchronously assigns a texture to the given material parameters.
   * @param {Object} materialParams
   * @param {string} mapName
   * @param {Object} mapDef
   * @return {Promise<Texture>}
   */


		assignTexture( materialParams, mapName, mapDef ) {

			const parser = this;
			return this.getDependency( 'texture', mapDef.index ).then( function ( texture ) {

				// Materials sample aoMap from UV set 1 and other maps from UV set 0 - this can't be configured
				// However, we will copy UV set 0 to UV set 1 on demand for aoMap
				if ( mapDef.texCoord !== undefined && mapDef.texCoord != 0 && ! ( mapName === 'aoMap' && mapDef.texCoord == 1 ) ) {

					console.warn( 'THREE.GLTFLoader: Custom UV set ' + mapDef.texCoord + ' for texture ' + mapName + ' not yet supported.' );

				}

				if ( parser.extensions[ EXTENSIONS.KHR_TEXTURE_TRANSFORM ] ) {

					const transform = mapDef.extensions !== undefined ? mapDef.extensions[ EXTENSIONS.KHR_TEXTURE_TRANSFORM ] : undefined;

					if ( transform ) {

						const gltfReference = parser.associations.get( texture );
						texture = parser.extensions[ EXTENSIONS.KHR_TEXTURE_TRANSFORM ].extendTexture( texture, transform );
						parser.associations.set( texture, gltfReference );

					}

				}

				materialParams[ mapName ] = texture;
				return texture;

			} );

		}
		/**
   * Assigns final material to a THREE.Mesh, THREE.Line, or THREE.Points instance. The instance
   * already has a material (generated from the glTF material options alone)
   * but reuse of the same glTF material may require multiple threejs materials
   * to accommodate different primitive types, defines, etc. New materials will
   * be created if necessary, and reused from a cache.
   * @param  {Object3D} mesh THREE.Mesh, THREE.Line, or THREE.Points instance.
   */


		assignFinalMaterial( mesh ) {

			const geometry = mesh.geometry;
			let material = mesh.material;
			const useDerivativeTangents = geometry.attributes.tangent === undefined;
			const useVertexColors = geometry.attributes.color !== undefined;
			const useFlatShading = geometry.attributes.normal === undefined;

			if ( mesh.isPoints ) {

				const cacheKey = 'PointsMaterial:' + material.uuid;
				let pointsMaterial = this.cache.get( cacheKey );

				if ( ! pointsMaterial ) {

					pointsMaterial = new THREE.PointsMaterial();
					THREE.Material.prototype.copy.call( pointsMaterial, material );
					pointsMaterial.color.copy( material.color );
					pointsMaterial.map = material.map;
					pointsMaterial.sizeAttenuation = false; // glTF spec says points should be 1px

					this.cache.add( cacheKey, pointsMaterial );

				}

				material = pointsMaterial;

			} else if ( mesh.isLine ) {

				const cacheKey = 'LineBasicMaterial:' + material.uuid;
				let lineMaterial = this.cache.get( cacheKey );

				if ( ! lineMaterial ) {

					lineMaterial = new THREE.LineBasicMaterial();
					THREE.Material.prototype.copy.call( lineMaterial, material );
					lineMaterial.color.copy( material.color );
					this.cache.add( cacheKey, lineMaterial );

				}

				material = lineMaterial;

			} // Clone the material if it will be modified


			if ( useDerivativeTangents || useVertexColors || useFlatShading ) {

				let cacheKey = 'ClonedMaterial:' + material.uuid + ':';
				if ( material.isGLTFSpecularGlossinessMaterial ) cacheKey += 'specular-glossiness:';
				if ( useDerivativeTangents ) cacheKey += 'derivative-tangents:';
				if ( useVertexColors ) cacheKey += 'vertex-colors:';
				if ( useFlatShading ) cacheKey += 'flat-shading:';
				let cachedMaterial = this.cache.get( cacheKey );

				if ( ! cachedMaterial ) {

					cachedMaterial = material.clone();
					if ( useVertexColors ) cachedMaterial.vertexColors = true;
					if ( useFlatShading ) cachedMaterial.flatShading = true;

					if ( useDerivativeTangents ) {

						// https://github.com/mrdoob/three.js/issues/11438#issuecomment-507003995
						if ( cachedMaterial.normalScale ) cachedMaterial.normalScale.y *= - 1;
						if ( cachedMaterial.clearcoatNormalScale ) cachedMaterial.clearcoatNormalScale.y *= - 1;

					}

					this.cache.add( cacheKey, cachedMaterial );
					this.associations.set( cachedMaterial, this.associations.get( material ) );

				}

				material = cachedMaterial;

			} // workarounds for mesh and geometry


			if ( material.aoMap && geometry.attributes.uv2 === undefined && geometry.attributes.uv !== undefined ) {

				geometry.setAttribute( 'uv2', geometry.attributes.uv );

			}

			mesh.material = material;

		}

		getMaterialType() {

			return THREE.MeshStandardMaterial;

		}
		/**
   * Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#materials
   * @param {number} materialIndex
   * @return {Promise<Material>}
   */


		loadMaterial( materialIndex ) {

			const parser = this;
			const json = this.json;
			const extensions = this.extensions;
			const materialDef = json.materials[ materialIndex ];
			let materialType;
			const materialParams = {};
			const materialExtensions = materialDef.extensions || {};
			const pending = [];

			if ( materialExtensions[ EXTENSIONS.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS ] ) {

				const sgExtension = extensions[ EXTENSIONS.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS ];
				materialType = sgExtension.getMaterialType();
				pending.push( sgExtension.extendParams( materialParams, materialDef, parser ) );

			} else if ( materialExtensions[ EXTENSIONS.KHR_MATERIALS_UNLIT ] ) {

				const kmuExtension = extensions[ EXTENSIONS.KHR_MATERIALS_UNLIT ];
				materialType = kmuExtension.getMaterialType();
				pending.push( kmuExtension.extendParams( materialParams, materialDef, parser ) );

			} else {

				// Specification:
				// https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#metallic-roughness-material
				const metallicRoughness = materialDef.pbrMetallicRoughness || {};
				materialParams.color = new THREE.Color( 1.0, 1.0, 1.0 );
				materialParams.opacity = 1.0;

				if ( Array.isArray( metallicRoughness.baseColorFactor ) ) {

					const array = metallicRoughness.baseColorFactor;
					materialParams.color.fromArray( array );
					materialParams.opacity = array[ 3 ];

				}

				if ( metallicRoughness.baseColorTexture !== undefined ) {

					pending.push( parser.assignTexture( materialParams, 'map', metallicRoughness.baseColorTexture ) );

				}

				materialParams.metalness = metallicRoughness.metallicFactor !== undefined ? metallicRoughness.metallicFactor : 1.0;
				materialParams.roughness = metallicRoughness.roughnessFactor !== undefined ? metallicRoughness.roughnessFactor : 1.0;

				if ( metallicRoughness.metallicRoughnessTexture !== undefined ) {

					pending.push( parser.assignTexture( materialParams, 'metalnessMap', metallicRoughness.metallicRoughnessTexture ) );
					pending.push( parser.assignTexture( materialParams, 'roughnessMap', metallicRoughness.metallicRoughnessTexture ) );

				}

				materialType = this._invokeOne( function ( ext ) {

					return ext.getMaterialType && ext.getMaterialType( materialIndex );

				} );
				pending.push( Promise.all( this._invokeAll( function ( ext ) {

					return ext.extendMaterialParams && ext.extendMaterialParams( materialIndex, materialParams );

				} ) ) );

			}

			if ( materialDef.doubleSided === true ) {

				materialParams.side = THREE.DoubleSide;

			}

			const alphaMode = materialDef.alphaMode || ALPHA_MODES.OPAQUE;

			if ( alphaMode === ALPHA_MODES.BLEND ) {

				materialParams.transparent = true; // See: https://github.com/mrdoob/three.js/issues/17706

				materialParams.depthWrite = false;

			} else {

				materialParams.format = THREE.RGBFormat;
				materialParams.transparent = false;

				if ( alphaMode === ALPHA_MODES.MASK ) {

					materialParams.alphaTest = materialDef.alphaCutoff !== undefined ? materialDef.alphaCutoff : 0.5;

				}

			}

			if ( materialDef.normalTexture !== undefined && materialType !== THREE.MeshBasicMaterial ) {

				pending.push( parser.assignTexture( materialParams, 'normalMap', materialDef.normalTexture ) );
				materialParams.normalScale = new THREE.Vector2( 1, 1 );

				if ( materialDef.normalTexture.scale !== undefined ) {

					const scale = materialDef.normalTexture.scale;
					materialParams.normalScale.set( scale, scale );

				}

			}

			if ( materialDef.occlusionTexture !== undefined && materialType !== THREE.MeshBasicMaterial ) {

				pending.push( parser.assignTexture( materialParams, 'aoMap', materialDef.occlusionTexture ) );

				if ( materialDef.occlusionTexture.strength !== undefined ) {

					materialParams.aoMapIntensity = materialDef.occlusionTexture.strength;

				}

			}

			if ( materialDef.emissiveFactor !== undefined && materialType !== THREE.MeshBasicMaterial ) {

				materialParams.emissive = new THREE.Color().fromArray( materialDef.emissiveFactor );

			}

			if ( materialDef.emissiveTexture !== undefined && materialType !== THREE.MeshBasicMaterial ) {

				pending.push( parser.assignTexture( materialParams, 'emissiveMap', materialDef.emissiveTexture ) );

			}

			return Promise.all( pending ).then( function () {

				let material;

				if ( materialType === GLTFMeshStandardSGMaterial ) {

					material = extensions[ EXTENSIONS.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS ].createMaterial( materialParams );

				} else {

					material = new materialType( materialParams );

				}

				if ( materialDef.name ) material.name = materialDef.name; // baseColorTexture, emissiveTexture, and specularGlossinessTexture use sRGB encoding.

				if ( material.map ) material.map.encoding = THREE.sRGBEncoding;
				if ( material.emissiveMap ) material.emissiveMap.encoding = THREE.sRGBEncoding;
				assignExtrasToUserData( material, materialDef );
				parser.associations.set( material, {
					materials: materialIndex
				} );
				if ( materialDef.extensions ) addUnknownExtensionsToUserData( extensions, material, materialDef );
				return material;

			} );

		}
		/** When THREE.Object3D instances are targeted by animation, they need unique names. */


		createUniqueName( originalName ) {

			const sanitizedName = THREE.PropertyBinding.sanitizeNodeName( originalName || '' );
			let name = sanitizedName;

			for ( let i = 1; this.nodeNamesUsed[ name ]; ++ i ) {

				name = sanitizedName + '_' + i;

			}

			this.nodeNamesUsed[ name ] = true;
			return name;

		}
		/**
   * Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#geometry
   *
   * Creates BufferGeometries from primitives.
   *
   * @param {Array<GLTF.Primitive>} primitives
   * @return {Promise<Array<BufferGeometry>>}
   */


		loadGeometries( primitives ) {

			const parser = this;
			const extensions = this.extensions;
			const cache = this.primitiveCache;

			function createDracoPrimitive( primitive ) {

				return extensions[ EXTENSIONS.KHR_DRACO_MESH_COMPRESSION ].decodePrimitive( primitive, parser ).then( function ( geometry ) {

					return addPrimitiveAttributes( geometry, primitive, parser );

				} );

			}

			const pending = [];

			for ( let i = 0, il = primitives.length; i < il; i ++ ) {

				const primitive = primitives[ i ];
				const cacheKey = createPrimitiveKey( primitive ); // See if we've already created this geometry

				const cached = cache[ cacheKey ];

				if ( cached ) {

					// Use the cached geometry if it exists
					pending.push( cached.promise );

				} else {

					let geometryPromise;

					if ( primitive.extensions && primitive.extensions[ EXTENSIONS.KHR_DRACO_MESH_COMPRESSION ] ) {

						// Use DRACO geometry if available
						geometryPromise = createDracoPrimitive( primitive );

					} else {

						// Otherwise create a new geometry
						geometryPromise = addPrimitiveAttributes( new THREE.BufferGeometry(), primitive, parser );

					} // Cache this geometry


					cache[ cacheKey ] = {
						primitive: primitive,
						promise: geometryPromise
					};
					pending.push( geometryPromise );

				}

			}

			return Promise.all( pending );

		}
		/**
   * Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#meshes
   * @param {number} meshIndex
   * @return {Promise<Group|Mesh|SkinnedMesh>}
   */


		loadMesh( meshIndex ) {

			const parser = this;
			const json = this.json;
			const extensions = this.extensions;
			const meshDef = json.meshes[ meshIndex ];
			const primitives = meshDef.primitives;
			const pending = [];

			for ( let i = 0, il = primitives.length; i < il; i ++ ) {

				const material = primitives[ i ].material === undefined ? createDefaultMaterial( this.cache ) : this.getDependency( 'material', primitives[ i ].material );
				pending.push( material );

			}

			pending.push( parser.loadGeometries( primitives ) );
			return Promise.all( pending ).then( function ( results ) {

				const materials = results.slice( 0, results.length - 1 );
				const geometries = results[ results.length - 1 ];
				const meshes = [];

				for ( let i = 0, il = geometries.length; i < il; i ++ ) {

					const geometry = geometries[ i ];
					const primitive = primitives[ i ]; // 1. create THREE.Mesh

					let mesh;
					const material = materials[ i ];

					if ( primitive.mode === WEBGL_CONSTANTS.TRIANGLES || primitive.mode === WEBGL_CONSTANTS.TRIANGLE_STRIP || primitive.mode === WEBGL_CONSTANTS.TRIANGLE_FAN || primitive.mode === undefined ) {

						// .isSkinnedMesh isn't in glTF spec. See ._markDefs()
						mesh = meshDef.isSkinnedMesh === true ? new THREE.SkinnedMesh( geometry, material ) : new THREE.Mesh( geometry, material );

						if ( mesh.isSkinnedMesh === true && ! mesh.geometry.attributes.skinWeight.normalized ) {

							// we normalize floating point skin weight array to fix malformed assets (see #15319)
							// it's important to skip this for non-float32 data since normalizeSkinWeights assumes non-normalized inputs
							mesh.normalizeSkinWeights();

						}

						if ( primitive.mode === WEBGL_CONSTANTS.TRIANGLE_STRIP ) {

							mesh.geometry = toTrianglesDrawMode( mesh.geometry, THREE.TriangleStripDrawMode );

						} else if ( primitive.mode === WEBGL_CONSTANTS.TRIANGLE_FAN ) {

							mesh.geometry = toTrianglesDrawMode( mesh.geometry, THREE.TriangleFanDrawMode );

						}

					} else if ( primitive.mode === WEBGL_CONSTANTS.LINES ) {

						mesh = new THREE.LineSegments( geometry, material );

					} else if ( primitive.mode === WEBGL_CONSTANTS.LINE_STRIP ) {

						mesh = new THREE.Line( geometry, material );

					} else if ( primitive.mode === WEBGL_CONSTANTS.LINE_LOOP ) {

						mesh = new THREE.LineLoop( geometry, material );

					} else if ( primitive.mode === WEBGL_CONSTANTS.POINTS ) {

						mesh = new THREE.Points( geometry, material );

					} else {

						throw new Error( 'THREE.GLTFLoader: Primitive mode unsupported: ' + primitive.mode );

					}

					if ( Object.keys( mesh.geometry.morphAttributes ).length > 0 ) {

						updateMorphTargets( mesh, meshDef );

					}

					mesh.name = parser.createUniqueName( meshDef.name || 'mesh_' + meshIndex );
					assignExtrasToUserData( mesh, meshDef );
					if ( primitive.extensions ) addUnknownExtensionsToUserData( extensions, mesh, primitive );
					parser.assignFinalMaterial( mesh );
					meshes.push( mesh );

				}

				for ( let i = 0, il = meshes.length; i < il; i ++ ) {

					parser.associations.set( meshes[ i ], {
						meshes: meshIndex,
						primitives: i
					} );

				}

				if ( meshes.length === 1 ) {

					return meshes[ 0 ];

				}

				const group = new THREE.Group();
				parser.associations.set( group, {
					meshes: meshIndex
				} );

				for ( let i = 0, il = meshes.length; i < il; i ++ ) {

					group.add( meshes[ i ] );

				}

				return group;

			} );

		}
		/**
   * Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#cameras
   * @param {number} cameraIndex
   * @return {Promise<THREE.Camera>}
   */


		loadCamera( cameraIndex ) {

			let camera;
			const cameraDef = this.json.cameras[ cameraIndex ];
			const params = cameraDef[ cameraDef.type ];

			if ( ! params ) {

				console.warn( 'THREE.GLTFLoader: Missing camera parameters.' );
				return;

			}

			if ( cameraDef.type === 'perspective' ) {

				camera = new THREE.PerspectiveCamera( THREE.MathUtils.radToDeg( params.yfov ), params.aspectRatio || 1, params.znear || 1, params.zfar || 2e6 );

			} else if ( cameraDef.type === 'orthographic' ) {

				camera = new THREE.OrthographicCamera( - params.xmag, params.xmag, params.ymag, - params.ymag, params.znear, params.zfar );

			}

			if ( cameraDef.name ) camera.name = this.createUniqueName( cameraDef.name );
			assignExtrasToUserData( camera, cameraDef );
			return Promise.resolve( camera );

		}
		/**
   * Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#skins
   * @param {number} skinIndex
   * @return {Promise<Object>}
   */


		loadSkin( skinIndex ) {

			const skinDef = this.json.skins[ skinIndex ];
			const skinEntry = {
				joints: skinDef.joints
			};

			if ( skinDef.inverseBindMatrices === undefined ) {

				return Promise.resolve( skinEntry );

			}

			return this.getDependency( 'accessor', skinDef.inverseBindMatrices ).then( function ( accessor ) {

				skinEntry.inverseBindMatrices = accessor;
				return skinEntry;

			} );

		}
		/**
   * Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#animations
   * @param {number} animationIndex
   * @return {Promise<AnimationClip>}
   */


		loadAnimation( animationIndex ) {

			const json = this.json;
			const animationDef = json.animations[ animationIndex ];
			const pendingNodes = [];
			const pendingInputAccessors = [];
			const pendingOutputAccessors = [];
			const pendingSamplers = [];
			const pendingTargets = [];

			for ( let i = 0, il = animationDef.channels.length; i < il; i ++ ) {

				const channel = animationDef.channels[ i ];
				const sampler = animationDef.samplers[ channel.sampler ];
				const target = channel.target;
				const name = target.node !== undefined ? target.node : target.id; // NOTE: target.id is deprecated.

				const input = animationDef.parameters !== undefined ? animationDef.parameters[ sampler.input ] : sampler.input;
				const output = animationDef.parameters !== undefined ? animationDef.parameters[ sampler.output ] : sampler.output;
				pendingNodes.push( this.getDependency( 'node', name ) );
				pendingInputAccessors.push( this.getDependency( 'accessor', input ) );
				pendingOutputAccessors.push( this.getDependency( 'accessor', output ) );
				pendingSamplers.push( sampler );
				pendingTargets.push( target );

			}

			return Promise.all( [ Promise.all( pendingNodes ), Promise.all( pendingInputAccessors ), Promise.all( pendingOutputAccessors ), Promise.all( pendingSamplers ), Promise.all( pendingTargets ) ] ).then( function ( dependencies ) {

				const nodes = dependencies[ 0 ];
				const inputAccessors = dependencies[ 1 ];
				const outputAccessors = dependencies[ 2 ];
				const samplers = dependencies[ 3 ];
				const targets = dependencies[ 4 ];
				const tracks = [];

				for ( let i = 0, il = nodes.length; i < il; i ++ ) {

					const node = nodes[ i ];
					const inputAccessor = inputAccessors[ i ];
					const outputAccessor = outputAccessors[ i ];
					const sampler = samplers[ i ];
					const target = targets[ i ];
					if ( node === undefined ) continue;
					node.updateMatrix();
					node.matrixAutoUpdate = true;
					let TypedKeyframeTrack;

					switch ( PATH_PROPERTIES[ target.path ] ) {

						case PATH_PROPERTIES.weights:
							TypedKeyframeTrack = THREE.NumberKeyframeTrack;
							break;

						case PATH_PROPERTIES.rotation:
							TypedKeyframeTrack = THREE.QuaternionKeyframeTrack;
							break;

						case PATH_PROPERTIES.position:
						case PATH_PROPERTIES.scale:
						default:
							TypedKeyframeTrack = THREE.VectorKeyframeTrack;
							break;

					}

					const targetName = node.name ? node.name : node.uuid;
					const interpolation = sampler.interpolation !== undefined ? INTERPOLATION[ sampler.interpolation ] : THREE.InterpolateLinear;
					const targetNames = [];

					if ( PATH_PROPERTIES[ target.path ] === PATH_PROPERTIES.weights ) {

						// Node may be a THREE.Group (glTF mesh with several primitives) or a THREE.Mesh.
						node.traverse( function ( object ) {

							if ( object.isMesh === true && object.morphTargetInfluences ) {

								targetNames.push( object.name ? object.name : object.uuid );

							}

						} );

					} else {

						targetNames.push( targetName );

					}

					let outputArray = outputAccessor.array;

					if ( outputAccessor.normalized ) {

						const scale = getNormalizedComponentScale( outputArray.constructor );
						const scaled = new Float32Array( outputArray.length );

						for ( let j = 0, jl = outputArray.length; j < jl; j ++ ) {

							scaled[ j ] = outputArray[ j ] * scale;

						}

						outputArray = scaled;

					}

					for ( let j = 0, jl = targetNames.length; j < jl; j ++ ) {

						const track = new TypedKeyframeTrack( targetNames[ j ] + '.' + PATH_PROPERTIES[ target.path ], inputAccessor.array, outputArray, interpolation ); // Override interpolation with custom factory method.

						if ( sampler.interpolation === 'CUBICSPLINE' ) {

							track.createInterpolant = function InterpolantFactoryMethodGLTFCubicSpline( result ) {

								// A CUBICSPLINE keyframe in glTF has three output values for each input value,
								// representing inTangent, splineVertex, and outTangent. As a result, track.getValueSize()
								// must be divided by three to get the interpolant's sampleSize argument.
								const interpolantType = this instanceof THREE.QuaternionKeyframeTrack ? GLTFCubicSplineQuaternionInterpolant : GLTFCubicSplineInterpolant;
								return new interpolantType( this.times, this.values, this.getValueSize() / 3, result );

							}; // Mark as CUBICSPLINE. `track.getInterpolation()` doesn't support custom interpolants.


							track.createInterpolant.isInterpolantFactoryMethodGLTFCubicSpline = true;

						}

						tracks.push( track );

					}

				}

				const name = animationDef.name ? animationDef.name : 'animation_' + animationIndex;
				return new THREE.AnimationClip( name, undefined, tracks );

			} );

		}

		createNodeMesh( nodeIndex ) {

			const json = this.json;
			const parser = this;
			const nodeDef = json.nodes[ nodeIndex ];
			if ( nodeDef.mesh === undefined ) return null;
			return parser.getDependency( 'mesh', nodeDef.mesh ).then( function ( mesh ) {

				const node = parser._getNodeRef( parser.meshCache, nodeDef.mesh, mesh ); // if weights are provided on the node, override weights on the mesh.


				if ( nodeDef.weights !== undefined ) {

					node.traverse( function ( o ) {

						if ( ! o.isMesh ) return;

						for ( let i = 0, il = nodeDef.weights.length; i < il; i ++ ) {

							o.morphTargetInfluences[ i ] = nodeDef.weights[ i ];

						}

					} );

				}

				return node;

			} );

		}
		/**
   * Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#nodes-and-hierarchy
   * @param {number} nodeIndex
   * @return {Promise<Object3D>}
   */


		loadNode( nodeIndex ) {

			const json = this.json;
			const extensions = this.extensions;
			const parser = this;
			const nodeDef = json.nodes[ nodeIndex ]; // reserve node's name before its dependencies, so the root has the intended name.

			const nodeName = nodeDef.name ? parser.createUniqueName( nodeDef.name ) : '';
			return function () {

				const pending = [];

				const meshPromise = parser._invokeOne( function ( ext ) {

					return ext.createNodeMesh && ext.createNodeMesh( nodeIndex );

				} );

				if ( meshPromise ) {

					pending.push( meshPromise );

				}

				if ( nodeDef.camera !== undefined ) {

					pending.push( parser.getDependency( 'camera', nodeDef.camera ).then( function ( camera ) {

						return parser._getNodeRef( parser.cameraCache, nodeDef.camera, camera );

					} ) );

				}

				parser._invokeAll( function ( ext ) {

					return ext.createNodeAttachment && ext.createNodeAttachment( nodeIndex );

				} ).forEach( function ( promise ) {

					pending.push( promise );

				} );

				return Promise.all( pending );

			}().then( function ( objects ) {

				let node; // .isBone isn't in glTF spec. See ._markDefs

				if ( nodeDef.isBone === true ) {

					node = new THREE.Bone();

				} else if ( objects.length > 1 ) {

					node = new THREE.Group();

				} else if ( objects.length === 1 ) {

					node = objects[ 0 ];

				} else {

					node = new THREE.Object3D();

				}

				if ( node !== objects[ 0 ] ) {

					for ( let i = 0, il = objects.length; i < il; i ++ ) {

						node.add( objects[ i ] );

					}

				}

				if ( nodeDef.name ) {

					node.userData.name = nodeDef.name;
					node.name = nodeName;

				}

				assignExtrasToUserData( node, nodeDef );
				if ( nodeDef.extensions ) addUnknownExtensionsToUserData( extensions, node, nodeDef );

				if ( nodeDef.matrix !== undefined ) {

					const matrix = new THREE.Matrix4();
					matrix.fromArray( nodeDef.matrix );
					node.applyMatrix4( matrix );

				} else {

					if ( nodeDef.translation !== undefined ) {

						node.position.fromArray( nodeDef.translation );

					}

					if ( nodeDef.rotation !== undefined ) {

						node.quaternion.fromArray( nodeDef.rotation );

					}

					if ( nodeDef.scale !== undefined ) {

						node.scale.fromArray( nodeDef.scale );

					}

				}

				if ( ! parser.associations.has( node ) ) {

					parser.associations.set( node, {} );

				}

				parser.associations.get( node ).nodes = nodeIndex;
				return node;

			} );

		}
		/**
   * Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#scenes
   * @param {number} sceneIndex
   * @return {Promise<Group>}
   */


		loadScene( sceneIndex ) {

			const json = this.json;
			const extensions = this.extensions;
			const sceneDef = this.json.scenes[ sceneIndex ];
			const parser = this; // THREE.Loader returns THREE.Group, not Scene.
			// See: https://github.com/mrdoob/three.js/issues/18342#issuecomment-578981172

			const scene = new THREE.Group();
			if ( sceneDef.name ) scene.name = parser.createUniqueName( sceneDef.name );
			assignExtrasToUserData( scene, sceneDef );
			if ( sceneDef.extensions ) addUnknownExtensionsToUserData( extensions, scene, sceneDef );
			const nodeIds = sceneDef.nodes || [];
			const pending = [];

			for ( let i = 0, il = nodeIds.length; i < il; i ++ ) {

				pending.push( buildNodeHierarchy( nodeIds[ i ], scene, json, parser ) );

			}

			return Promise.all( pending ).then( function () {

				// Removes dangling associations, associations that reference a node that
				// didn't make it into the scene.
				const reduceAssociations = node => {

					const reducedAssociations = new Map();

					for ( const [ key, value ] of parser.associations ) {

						if ( key instanceof THREE.Material || key instanceof THREE.Texture ) {

							reducedAssociations.set( key, value );

						}

					}

					node.traverse( node => {

						const mappings = parser.associations.get( node );

						if ( mappings != null ) {

							reducedAssociations.set( node, mappings );

						}

					} );
					return reducedAssociations;

				};

				parser.associations = reduceAssociations( scene );
				return scene;

			} );

		}

	}

	function buildNodeHierarchy( nodeId, parentObject, json, parser ) {

		const nodeDef = json.nodes[ nodeId ];
		return parser.getDependency( 'node', nodeId ).then( function ( node ) {

			if ( nodeDef.skin === undefined ) return node; // build skeleton here as well

			let skinEntry;
			return parser.getDependency( 'skin', nodeDef.skin ).then( function ( skin ) {

				skinEntry = skin;
				const pendingJoints = [];

				for ( let i = 0, il = skinEntry.joints.length; i < il; i ++ ) {

					pendingJoints.push( parser.getDependency( 'node', skinEntry.joints[ i ] ) );

				}

				return Promise.all( pendingJoints );

			} ).then( function ( jointNodes ) {

				node.traverse( function ( mesh ) {

					if ( ! mesh.isMesh ) return;
					const bones = [];
					const boneInverses = [];

					for ( let j = 0, jl = jointNodes.length; j < jl; j ++ ) {

						const jointNode = jointNodes[ j ];

						if ( jointNode ) {

							bones.push( jointNode );
							const mat = new THREE.Matrix4();

							if ( skinEntry.inverseBindMatrices !== undefined ) {

								mat.fromArray( skinEntry.inverseBindMatrices.array, j * 16 );

							}

							boneInverses.push( mat );

						} else {

							console.warn( 'THREE.GLTFLoader: Joint "%s" could not be found.', skinEntry.joints[ j ] );

						}

					}

					mesh.bind( new THREE.Skeleton( bones, boneInverses ), mesh.matrixWorld );

				} );
				return node;

			} );

		} ).then( function ( node ) {

			// build node hierachy
			parentObject.add( node );
			const pending = [];

			if ( nodeDef.children ) {

				const children = nodeDef.children;

				for ( let i = 0, il = children.length; i < il; i ++ ) {

					const child = children[ i ];
					pending.push( buildNodeHierarchy( child, node, json, parser ) );

				}

			}

			return Promise.all( pending );

		} );

	}
	/**
 * @param {BufferGeometry} geometry
 * @param {GLTF.Primitive} primitiveDef
 * @param {GLTFParser} parser
 */


	function computeBounds( geometry, primitiveDef, parser ) {

		const attributes = primitiveDef.attributes;
		const box = new THREE.Box3();

		if ( attributes.POSITION !== undefined ) {

			const accessor = parser.json.accessors[ attributes.POSITION ];
			const min = accessor.min;
			const max = accessor.max; // glTF requires 'min' and 'max', but VRM (which extends glTF) currently ignores that requirement.

			if ( min !== undefined && max !== undefined ) {

				box.set( new THREE.Vector3( min[ 0 ], min[ 1 ], min[ 2 ] ), new THREE.Vector3( max[ 0 ], max[ 1 ], max[ 2 ] ) );

				if ( accessor.normalized ) {

					const boxScale = getNormalizedComponentScale( WEBGL_COMPONENT_TYPES[ accessor.componentType ] );
					box.min.multiplyScalar( boxScale );
					box.max.multiplyScalar( boxScale );

				}

			} else {

				console.warn( 'THREE.GLTFLoader: Missing min/max properties for accessor POSITION.' );
				return;

			}

		} else {

			return;

		}

		const targets = primitiveDef.targets;

		if ( targets !== undefined ) {

			const maxDisplacement = new THREE.Vector3();
			const vector = new THREE.Vector3();

			for ( let i = 0, il = targets.length; i < il; i ++ ) {

				const target = targets[ i ];

				if ( target.POSITION !== undefined ) {

					const accessor = parser.json.accessors[ target.POSITION ];
					const min = accessor.min;
					const max = accessor.max; // glTF requires 'min' and 'max', but VRM (which extends glTF) currently ignores that requirement.

					if ( min !== undefined && max !== undefined ) {

						// we need to get max of absolute components because target weight is [-1,1]
						vector.setX( Math.max( Math.abs( min[ 0 ] ), Math.abs( max[ 0 ] ) ) );
						vector.setY( Math.max( Math.abs( min[ 1 ] ), Math.abs( max[ 1 ] ) ) );
						vector.setZ( Math.max( Math.abs( min[ 2 ] ), Math.abs( max[ 2 ] ) ) );

						if ( accessor.normalized ) {

							const boxScale = getNormalizedComponentScale( WEBGL_COMPONENT_TYPES[ accessor.componentType ] );
							vector.multiplyScalar( boxScale );

						} // Note: this assumes that the sum of all weights is at most 1. This isn't quite correct - it's more conservative
						// to assume that each target can have a max weight of 1. However, for some use cases - notably, when morph targets
						// are used to implement key-frame animations and as such only two are active at a time - this results in very large
						// boxes. So for now we make a box that's sometimes a touch too small but is hopefully mostly of reasonable size.


						maxDisplacement.max( vector );

					} else {

						console.warn( 'THREE.GLTFLoader: Missing min/max properties for accessor POSITION.' );

					}

				}

			} // As per comment above this box isn't conservative, but has a reasonable size for a very large number of morph targets.


			box.expandByVector( maxDisplacement );

		}

		geometry.boundingBox = box;
		const sphere = new THREE.Sphere();
		box.getCenter( sphere.center );
		sphere.radius = box.min.distanceTo( box.max ) / 2;
		geometry.boundingSphere = sphere;

	}
	/**
 * @param {BufferGeometry} geometry
 * @param {GLTF.Primitive} primitiveDef
 * @param {GLTFParser} parser
 * @return {Promise<BufferGeometry>}
 */


	function addPrimitiveAttributes( geometry, primitiveDef, parser ) {

		const attributes = primitiveDef.attributes;
		const pending = [];

		function assignAttributeAccessor( accessorIndex, attributeName ) {

			return parser.getDependency( 'accessor', accessorIndex ).then( function ( accessor ) {

				geometry.setAttribute( attributeName, accessor );

			} );

		}

		for ( const gltfAttributeName in attributes ) {

			const threeAttributeName = ATTRIBUTES[ gltfAttributeName ] || gltfAttributeName.toLowerCase(); // Skip attributes already provided by e.g. Draco extension.

			if ( threeAttributeName in geometry.attributes ) continue;
			pending.push( assignAttributeAccessor( attributes[ gltfAttributeName ], threeAttributeName ) );

		}

		if ( primitiveDef.indices !== undefined && ! geometry.index ) {

			const accessor = parser.getDependency( 'accessor', primitiveDef.indices ).then( function ( accessor ) {

				geometry.setIndex( accessor );

			} );
			pending.push( accessor );

		}

		assignExtrasToUserData( geometry, primitiveDef );
		computeBounds( geometry, primitiveDef, parser );
		return Promise.all( pending ).then( function () {

			return primitiveDef.targets !== undefined ? addMorphTargets( geometry, primitiveDef.targets, parser ) : geometry;

		} );

	}
	/**
 * @param {BufferGeometry} geometry
 * @param {Number} drawMode
 * @return {BufferGeometry}
 */


	function toTrianglesDrawMode( geometry, drawMode ) {

		let index = geometry.getIndex(); // generate index if not present

		if ( index === null ) {

			const indices = [];
			const position = geometry.getAttribute( 'position' );

			if ( position !== undefined ) {

				for ( let i = 0; i < position.count; i ++ ) {

					indices.push( i );

				}

				geometry.setIndex( indices );
				index = geometry.getIndex();

			} else {

				console.error( 'THREE.GLTFLoader.toTrianglesDrawMode(): Undefined position attribute. Processing not possible.' );
				return geometry;

			}

		} //


		const numberOfTriangles = index.count - 2;
		const newIndices = [];

		if ( drawMode === THREE.TriangleFanDrawMode ) {

			// gl.TRIANGLE_FAN
			for ( let i = 1; i <= numberOfTriangles; i ++ ) {

				newIndices.push( index.getX( 0 ) );
				newIndices.push( index.getX( i ) );
				newIndices.push( index.getX( i + 1 ) );

			}

		} else {

			// gl.TRIANGLE_STRIP
			for ( let i = 0; i < numberOfTriangles; i ++ ) {

				if ( i % 2 === 0 ) {

					newIndices.push( index.getX( i ) );
					newIndices.push( index.getX( i + 1 ) );
					newIndices.push( index.getX( i + 2 ) );

				} else {

					newIndices.push( index.getX( i + 2 ) );
					newIndices.push( index.getX( i + 1 ) );
					newIndices.push( index.getX( i ) );

				}

			}

		}

		if ( newIndices.length / 3 !== numberOfTriangles ) {

			console.error( 'THREE.GLTFLoader.toTrianglesDrawMode(): Unable to generate correct amount of triangles.' );

		} // build final geometry


		const newGeometry = geometry.clone();
		newGeometry.setIndex( newIndices );
		return newGeometry;

	}

	THREE.GLTFLoader = GLTFLoader;

} )();

},{}],61:[function(require,module,exports){
( function () {

	/**
 * Loads a Wavefront .mtl file specifying materials
 */

	class MTLLoader extends THREE.Loader {

		constructor( manager ) {

			super( manager );

		}
		/**
   * Loads and parses a MTL asset from a URL.
   *
   * @param {String} url - URL to the MTL file.
   * @param {Function} [onLoad] - Callback invoked with the loaded object.
   * @param {Function} [onProgress] - Callback for download progress.
   * @param {Function} [onError] - Callback for download errors.
   *
   * @see setPath setResourcePath
   *
   * @note In order for relative texture references to resolve correctly
   * you must call setResourcePath() explicitly prior to load.
   */


		load( url, onLoad, onProgress, onError ) {

			const scope = this;
			const path = this.path === '' ? THREE.LoaderUtils.extractUrlBase( url ) : this.path;
			const loader = new THREE.FileLoader( this.manager );
			loader.setPath( this.path );
			loader.setRequestHeader( this.requestHeader );
			loader.setWithCredentials( this.withCredentials );
			loader.load( url, function ( text ) {

				try {

					onLoad( scope.parse( text, path ) );

				} catch ( e ) {

					if ( onError ) {

						onError( e );

					} else {

						console.error( e );

					}

					scope.manager.itemError( url );

				}

			}, onProgress, onError );

		}

		setMaterialOptions( value ) {

			this.materialOptions = value;
			return this;

		}
		/**
   * Parses a MTL file.
   *
   * @param {String} text - Content of MTL file
   * @return {MaterialCreator}
   *
   * @see setPath setResourcePath
   *
   * @note In order for relative texture references to resolve correctly
   * you must call setResourcePath() explicitly prior to parse.
   */


		parse( text, path ) {

			const lines = text.split( '\n' );
			let info = {};
			const delimiter_pattern = /\s+/;
			const materialsInfo = {};

			for ( let i = 0; i < lines.length; i ++ ) {

				let line = lines[ i ];
				line = line.trim();

				if ( line.length === 0 || line.charAt( 0 ) === '#' ) {

					// Blank line or comment ignore
					continue;

				}

				const pos = line.indexOf( ' ' );
				let key = pos >= 0 ? line.substring( 0, pos ) : line;
				key = key.toLowerCase();
				let value = pos >= 0 ? line.substring( pos + 1 ) : '';
				value = value.trim();

				if ( key === 'newmtl' ) {

					// New material
					info = {
						name: value
					};
					materialsInfo[ value ] = info;

				} else {

					if ( key === 'ka' || key === 'kd' || key === 'ks' || key === 'ke' ) {

						const ss = value.split( delimiter_pattern, 3 );
						info[ key ] = [ parseFloat( ss[ 0 ] ), parseFloat( ss[ 1 ] ), parseFloat( ss[ 2 ] ) ];

					} else {

						info[ key ] = value;

					}

				}

			}

			const materialCreator = new MaterialCreator( this.resourcePath || path, this.materialOptions );
			materialCreator.setCrossOrigin( this.crossOrigin );
			materialCreator.setManager( this.manager );
			materialCreator.setMaterials( materialsInfo );
			return materialCreator;

		}

	}
	/**
 * Create a new MTLLoader.MaterialCreator
 * @param baseUrl - Url relative to which textures are loaded
 * @param options - Set of options on how to construct the materials
 *                  side: Which side to apply the material
 *                        THREE.FrontSide (default), THREE.BackSide, THREE.DoubleSide
 *                  wrap: What type of wrapping to apply for textures
 *                        THREE.RepeatWrapping (default), THREE.ClampToEdgeWrapping, THREE.MirroredRepeatWrapping
 *                  normalizeRGB: RGBs need to be normalized to 0-1 from 0-255
 *                                Default: false, assumed to be already normalized
 *                  ignoreZeroRGBs: Ignore values of RGBs (Ka,Kd,Ks) that are all 0's
 *                                  Default: false
 * @constructor
 */


	class MaterialCreator {

		constructor( baseUrl = '', options = {} ) {

			this.baseUrl = baseUrl;
			this.options = options;
			this.materialsInfo = {};
			this.materials = {};
			this.materialsArray = [];
			this.nameLookup = {};
			this.crossOrigin = 'anonymous';
			this.side = this.options.side !== undefined ? this.options.side : THREE.FrontSide;
			this.wrap = this.options.wrap !== undefined ? this.options.wrap : THREE.RepeatWrapping;

		}

		setCrossOrigin( value ) {

			this.crossOrigin = value;
			return this;

		}

		setManager( value ) {

			this.manager = value;

		}

		setMaterials( materialsInfo ) {

			this.materialsInfo = this.convert( materialsInfo );
			this.materials = {};
			this.materialsArray = [];
			this.nameLookup = {};

		}

		convert( materialsInfo ) {

			if ( ! this.options ) return materialsInfo;
			const converted = {};

			for ( const mn in materialsInfo ) {

				// Convert materials info into normalized form based on options
				const mat = materialsInfo[ mn ];
				const covmat = {};
				converted[ mn ] = covmat;

				for ( const prop in mat ) {

					let save = true;
					let value = mat[ prop ];
					const lprop = prop.toLowerCase();

					switch ( lprop ) {

						case 'kd':
						case 'ka':
						case 'ks':
							// Diffuse color (color under white light) using RGB values
							if ( this.options && this.options.normalizeRGB ) {

								value = [ value[ 0 ] / 255, value[ 1 ] / 255, value[ 2 ] / 255 ];

							}

							if ( this.options && this.options.ignoreZeroRGBs ) {

								if ( value[ 0 ] === 0 && value[ 1 ] === 0 && value[ 2 ] === 0 ) {

									// ignore
									save = false;

								}

							}

							break;

						default:
							break;

					}

					if ( save ) {

						covmat[ lprop ] = value;

					}

				}

			}

			return converted;

		}

		preload() {

			for ( const mn in this.materialsInfo ) {

				this.create( mn );

			}

		}

		getIndex( materialName ) {

			return this.nameLookup[ materialName ];

		}

		getAsArray() {

			let index = 0;

			for ( const mn in this.materialsInfo ) {

				this.materialsArray[ index ] = this.create( mn );
				this.nameLookup[ mn ] = index;
				index ++;

			}

			return this.materialsArray;

		}

		create( materialName ) {

			if ( this.materials[ materialName ] === undefined ) {

				this.createMaterial_( materialName );

			}

			return this.materials[ materialName ];

		}

		createMaterial_( materialName ) {

			// Create material
			const scope = this;
			const mat = this.materialsInfo[ materialName ];
			const params = {
				name: materialName,
				side: this.side
			};

			function resolveURL( baseUrl, url ) {

				if ( typeof url !== 'string' || url === '' ) return ''; // Absolute URL

				if ( /^https?:\/\//i.test( url ) ) return url;
				return baseUrl + url;

			}

			function setMapForType( mapType, value ) {

				if ( params[ mapType ] ) return; // Keep the first encountered texture

				const texParams = scope.getTextureParams( value, params );
				const map = scope.loadTexture( resolveURL( scope.baseUrl, texParams.url ) );
				map.repeat.copy( texParams.scale );
				map.offset.copy( texParams.offset );
				map.wrapS = scope.wrap;
				map.wrapT = scope.wrap;
				params[ mapType ] = map;

			}

			for ( const prop in mat ) {

				const value = mat[ prop ];
				let n;
				if ( value === '' ) continue;

				switch ( prop.toLowerCase() ) {

					// Ns is material specular exponent
					case 'kd':
						// Diffuse color (color under white light) using RGB values
						params.color = new THREE.Color().fromArray( value );
						break;

					case 'ks':
						// Specular color (color when light is reflected from shiny surface) using RGB values
						params.specular = new THREE.Color().fromArray( value );
						break;

					case 'ke':
						// Emissive using RGB values
						params.emissive = new THREE.Color().fromArray( value );
						break;

					case 'map_kd':
						// Diffuse texture map
						setMapForType( 'map', value );
						break;

					case 'map_ks':
						// Specular map
						setMapForType( 'specularMap', value );
						break;

					case 'map_ke':
						// Emissive map
						setMapForType( 'emissiveMap', value );
						break;

					case 'norm':
						setMapForType( 'normalMap', value );
						break;

					case 'map_bump':
					case 'bump':
						// Bump texture map
						setMapForType( 'bumpMap', value );
						break;

					case 'map_d':
						// Alpha map
						setMapForType( 'alphaMap', value );
						params.transparent = true;
						break;

					case 'ns':
						// The specular exponent (defines the focus of the specular highlight)
						// A high exponent results in a tight, concentrated highlight. Ns values normally range from 0 to 1000.
						params.shininess = parseFloat( value );
						break;

					case 'd':
						n = parseFloat( value );

						if ( n < 1 ) {

							params.opacity = n;
							params.transparent = true;

						}

						break;

					case 'tr':
						n = parseFloat( value );
						if ( this.options && this.options.invertTrProperty ) n = 1 - n;

						if ( n > 0 ) {

							params.opacity = 1 - n;
							params.transparent = true;

						}

						break;

					default:
						break;

				}

			}

			this.materials[ materialName ] = new THREE.MeshPhongMaterial( params );
			return this.materials[ materialName ];

		}

		getTextureParams( value, matParams ) {

			const texParams = {
				scale: new THREE.Vector2( 1, 1 ),
				offset: new THREE.Vector2( 0, 0 )
			};
			const items = value.split( /\s+/ );
			let pos;
			pos = items.indexOf( '-bm' );

			if ( pos >= 0 ) {

				matParams.bumpScale = parseFloat( items[ pos + 1 ] );
				items.splice( pos, 2 );

			}

			pos = items.indexOf( '-s' );

			if ( pos >= 0 ) {

				texParams.scale.set( parseFloat( items[ pos + 1 ] ), parseFloat( items[ pos + 2 ] ) );
				items.splice( pos, 4 ); // we expect 3 parameters here!

			}

			pos = items.indexOf( '-o' );

			if ( pos >= 0 ) {

				texParams.offset.set( parseFloat( items[ pos + 1 ] ), parseFloat( items[ pos + 2 ] ) );
				items.splice( pos, 4 ); // we expect 3 parameters here!

			}

			texParams.url = items.join( ' ' ).trim();
			return texParams;

		}

		loadTexture( url, mapping, onLoad, onProgress, onError ) {

			const manager = this.manager !== undefined ? this.manager : THREE.DefaultLoadingManager;
			let loader = manager.getHandler( url );

			if ( loader === null ) {

				loader = new THREE.TextureLoader( manager );

			}

			if ( loader.setCrossOrigin ) loader.setCrossOrigin( this.crossOrigin );
			const texture = loader.load( url, onLoad, onProgress, onError );
			if ( mapping !== undefined ) texture.mapping = mapping;
			return texture;

		}

	}

	THREE.MTLLoader = MTLLoader;

} )();

},{}],62:[function(require,module,exports){
( function () {

	const _object_pattern = /^[og]\s*(.+)?/; // mtllib file_reference

	const _material_library_pattern = /^mtllib /; // usemtl material_name

	const _material_use_pattern = /^usemtl /; // usemap map_name

	const _map_use_pattern = /^usemap /;

	const _vA = new THREE.Vector3();

	const _vB = new THREE.Vector3();

	const _vC = new THREE.Vector3();

	const _ab = new THREE.Vector3();

	const _cb = new THREE.Vector3();

	function ParserState() {

		const state = {
			objects: [],
			object: {},
			vertices: [],
			normals: [],
			colors: [],
			uvs: [],
			materials: {},
			materialLibraries: [],
			startObject: function ( name, fromDeclaration ) {

				// If the current object (initial from reset) is not from a g/o declaration in the parsed
				// file. We need to use it for the first parsed g/o to keep things in sync.
				if ( this.object && this.object.fromDeclaration === false ) {

					this.object.name = name;
					this.object.fromDeclaration = fromDeclaration !== false;
					return;

				}

				const previousMaterial = this.object && typeof this.object.currentMaterial === 'function' ? this.object.currentMaterial() : undefined;

				if ( this.object && typeof this.object._finalize === 'function' ) {

					this.object._finalize( true );

				}

				this.object = {
					name: name || '',
					fromDeclaration: fromDeclaration !== false,
					geometry: {
						vertices: [],
						normals: [],
						colors: [],
						uvs: [],
						hasUVIndices: false
					},
					materials: [],
					smooth: true,
					startMaterial: function ( name, libraries ) {

						const previous = this._finalize( false ); // New usemtl declaration overwrites an inherited material, except if faces were declared
						// after the material, then it must be preserved for proper MultiMaterial continuation.


						if ( previous && ( previous.inherited || previous.groupCount <= 0 ) ) {

							this.materials.splice( previous.index, 1 );

						}

						const material = {
							index: this.materials.length,
							name: name || '',
							mtllib: Array.isArray( libraries ) && libraries.length > 0 ? libraries[ libraries.length - 1 ] : '',
							smooth: previous !== undefined ? previous.smooth : this.smooth,
							groupStart: previous !== undefined ? previous.groupEnd : 0,
							groupEnd: - 1,
							groupCount: - 1,
							inherited: false,
							clone: function ( index ) {

								const cloned = {
									index: typeof index === 'number' ? index : this.index,
									name: this.name,
									mtllib: this.mtllib,
									smooth: this.smooth,
									groupStart: 0,
									groupEnd: - 1,
									groupCount: - 1,
									inherited: false
								};
								cloned.clone = this.clone.bind( cloned );
								return cloned;

							}
						};
						this.materials.push( material );
						return material;

					},
					currentMaterial: function () {

						if ( this.materials.length > 0 ) {

							return this.materials[ this.materials.length - 1 ];

						}

						return undefined;

					},
					_finalize: function ( end ) {

						const lastMultiMaterial = this.currentMaterial();

						if ( lastMultiMaterial && lastMultiMaterial.groupEnd === - 1 ) {

							lastMultiMaterial.groupEnd = this.geometry.vertices.length / 3;
							lastMultiMaterial.groupCount = lastMultiMaterial.groupEnd - lastMultiMaterial.groupStart;
							lastMultiMaterial.inherited = false;

						} // Ignore objects tail materials if no face declarations followed them before a new o/g started.


						if ( end && this.materials.length > 1 ) {

							for ( let mi = this.materials.length - 1; mi >= 0; mi -- ) {

								if ( this.materials[ mi ].groupCount <= 0 ) {

									this.materials.splice( mi, 1 );

								}

							}

						} // Guarantee at least one empty material, this makes the creation later more straight forward.


						if ( end && this.materials.length === 0 ) {

							this.materials.push( {
								name: '',
								smooth: this.smooth
							} );

						}

						return lastMultiMaterial;

					}
				}; // Inherit previous objects material.
				// Spec tells us that a declared material must be set to all objects until a new material is declared.
				// If a usemtl declaration is encountered while this new object is being parsed, it will
				// overwrite the inherited material. Exception being that there was already face declarations
				// to the inherited material, then it will be preserved for proper MultiMaterial continuation.

				if ( previousMaterial && previousMaterial.name && typeof previousMaterial.clone === 'function' ) {

					const declared = previousMaterial.clone( 0 );
					declared.inherited = true;
					this.object.materials.push( declared );

				}

				this.objects.push( this.object );

			},
			finalize: function () {

				if ( this.object && typeof this.object._finalize === 'function' ) {

					this.object._finalize( true );

				}

			},
			parseVertexIndex: function ( value, len ) {

				const index = parseInt( value, 10 );
				return ( index >= 0 ? index - 1 : index + len / 3 ) * 3;

			},
			parseNormalIndex: function ( value, len ) {

				const index = parseInt( value, 10 );
				return ( index >= 0 ? index - 1 : index + len / 3 ) * 3;

			},
			parseUVIndex: function ( value, len ) {

				const index = parseInt( value, 10 );
				return ( index >= 0 ? index - 1 : index + len / 2 ) * 2;

			},
			addVertex: function ( a, b, c ) {

				const src = this.vertices;
				const dst = this.object.geometry.vertices;
				dst.push( src[ a + 0 ], src[ a + 1 ], src[ a + 2 ] );
				dst.push( src[ b + 0 ], src[ b + 1 ], src[ b + 2 ] );
				dst.push( src[ c + 0 ], src[ c + 1 ], src[ c + 2 ] );

			},
			addVertexPoint: function ( a ) {

				const src = this.vertices;
				const dst = this.object.geometry.vertices;
				dst.push( src[ a + 0 ], src[ a + 1 ], src[ a + 2 ] );

			},
			addVertexLine: function ( a ) {

				const src = this.vertices;
				const dst = this.object.geometry.vertices;
				dst.push( src[ a + 0 ], src[ a + 1 ], src[ a + 2 ] );

			},
			addNormal: function ( a, b, c ) {

				const src = this.normals;
				const dst = this.object.geometry.normals;
				dst.push( src[ a + 0 ], src[ a + 1 ], src[ a + 2 ] );
				dst.push( src[ b + 0 ], src[ b + 1 ], src[ b + 2 ] );
				dst.push( src[ c + 0 ], src[ c + 1 ], src[ c + 2 ] );

			},
			addFaceNormal: function ( a, b, c ) {

				const src = this.vertices;
				const dst = this.object.geometry.normals;

				_vA.fromArray( src, a );

				_vB.fromArray( src, b );

				_vC.fromArray( src, c );

				_cb.subVectors( _vC, _vB );

				_ab.subVectors( _vA, _vB );

				_cb.cross( _ab );

				_cb.normalize();

				dst.push( _cb.x, _cb.y, _cb.z );
				dst.push( _cb.x, _cb.y, _cb.z );
				dst.push( _cb.x, _cb.y, _cb.z );

			},
			addColor: function ( a, b, c ) {

				const src = this.colors;
				const dst = this.object.geometry.colors;
				if ( src[ a ] !== undefined ) dst.push( src[ a + 0 ], src[ a + 1 ], src[ a + 2 ] );
				if ( src[ b ] !== undefined ) dst.push( src[ b + 0 ], src[ b + 1 ], src[ b + 2 ] );
				if ( src[ c ] !== undefined ) dst.push( src[ c + 0 ], src[ c + 1 ], src[ c + 2 ] );

			},
			addUV: function ( a, b, c ) {

				const src = this.uvs;
				const dst = this.object.geometry.uvs;
				dst.push( src[ a + 0 ], src[ a + 1 ] );
				dst.push( src[ b + 0 ], src[ b + 1 ] );
				dst.push( src[ c + 0 ], src[ c + 1 ] );

			},
			addDefaultUV: function () {

				const dst = this.object.geometry.uvs;
				dst.push( 0, 0 );
				dst.push( 0, 0 );
				dst.push( 0, 0 );

			},
			addUVLine: function ( a ) {

				const src = this.uvs;
				const dst = this.object.geometry.uvs;
				dst.push( src[ a + 0 ], src[ a + 1 ] );

			},
			addFace: function ( a, b, c, ua, ub, uc, na, nb, nc ) {

				const vLen = this.vertices.length;
				let ia = this.parseVertexIndex( a, vLen );
				let ib = this.parseVertexIndex( b, vLen );
				let ic = this.parseVertexIndex( c, vLen );
				this.addVertex( ia, ib, ic );
				this.addColor( ia, ib, ic ); // normals

				if ( na !== undefined && na !== '' ) {

					const nLen = this.normals.length;
					ia = this.parseNormalIndex( na, nLen );
					ib = this.parseNormalIndex( nb, nLen );
					ic = this.parseNormalIndex( nc, nLen );
					this.addNormal( ia, ib, ic );

				} else {

					this.addFaceNormal( ia, ib, ic );

				} // uvs


				if ( ua !== undefined && ua !== '' ) {

					const uvLen = this.uvs.length;
					ia = this.parseUVIndex( ua, uvLen );
					ib = this.parseUVIndex( ub, uvLen );
					ic = this.parseUVIndex( uc, uvLen );
					this.addUV( ia, ib, ic );
					this.object.geometry.hasUVIndices = true;

				} else {

					// add placeholder values (for inconsistent face definitions)
					this.addDefaultUV();

				}

			},
			addPointGeometry: function ( vertices ) {

				this.object.geometry.type = 'Points';
				const vLen = this.vertices.length;

				for ( let vi = 0, l = vertices.length; vi < l; vi ++ ) {

					const index = this.parseVertexIndex( vertices[ vi ], vLen );
					this.addVertexPoint( index );
					this.addColor( index );

				}

			},
			addLineGeometry: function ( vertices, uvs ) {

				this.object.geometry.type = 'Line';
				const vLen = this.vertices.length;
				const uvLen = this.uvs.length;

				for ( let vi = 0, l = vertices.length; vi < l; vi ++ ) {

					this.addVertexLine( this.parseVertexIndex( vertices[ vi ], vLen ) );

				}

				for ( let uvi = 0, l = uvs.length; uvi < l; uvi ++ ) {

					this.addUVLine( this.parseUVIndex( uvs[ uvi ], uvLen ) );

				}

			}
		};
		state.startObject( '', false );
		return state;

	} //


	class OBJLoader extends THREE.Loader {

		constructor( manager ) {

			super( manager );
			this.materials = null;

		}

		load( url, onLoad, onProgress, onError ) {

			const scope = this;
			const loader = new THREE.FileLoader( this.manager );
			loader.setPath( this.path );
			loader.setRequestHeader( this.requestHeader );
			loader.setWithCredentials( this.withCredentials );
			loader.load( url, function ( text ) {

				try {

					onLoad( scope.parse( text ) );

				} catch ( e ) {

					if ( onError ) {

						onError( e );

					} else {

						console.error( e );

					}

					scope.manager.itemError( url );

				}

			}, onProgress, onError );

		}

		setMaterials( materials ) {

			this.materials = materials;
			return this;

		}

		parse( text ) {

			const state = new ParserState();

			if ( text.indexOf( '\r\n' ) !== - 1 ) {

				// This is faster than String.split with regex that splits on both
				text = text.replace( /\r\n/g, '\n' );

			}

			if ( text.indexOf( '\\\n' ) !== - 1 ) {

				// join lines separated by a line continuation character (\)
				text = text.replace( /\\\n/g, '' );

			}

			const lines = text.split( '\n' );
			let line = '',
				lineFirstChar = '';
			let lineLength = 0;
			let result = []; // Faster to just trim left side of the line. Use if available.

			const trimLeft = typeof ''.trimLeft === 'function';

			for ( let i = 0, l = lines.length; i < l; i ++ ) {

				line = lines[ i ];
				line = trimLeft ? line.trimLeft() : line.trim();
				lineLength = line.length;
				if ( lineLength === 0 ) continue;
				lineFirstChar = line.charAt( 0 ); // @todo invoke passed in handler if any

				if ( lineFirstChar === '#' ) continue;

				if ( lineFirstChar === 'v' ) {

					const data = line.split( /\s+/ );

					switch ( data[ 0 ] ) {

						case 'v':
							state.vertices.push( parseFloat( data[ 1 ] ), parseFloat( data[ 2 ] ), parseFloat( data[ 3 ] ) );

							if ( data.length >= 7 ) {

								state.colors.push( parseFloat( data[ 4 ] ), parseFloat( data[ 5 ] ), parseFloat( data[ 6 ] ) );

							} else {

								// if no colors are defined, add placeholders so color and vertex indices match
								state.colors.push( undefined, undefined, undefined );

							}

							break;

						case 'vn':
							state.normals.push( parseFloat( data[ 1 ] ), parseFloat( data[ 2 ] ), parseFloat( data[ 3 ] ) );
							break;

						case 'vt':
							state.uvs.push( parseFloat( data[ 1 ] ), parseFloat( data[ 2 ] ) );
							break;

					}

				} else if ( lineFirstChar === 'f' ) {

					const lineData = line.substr( 1 ).trim();
					const vertexData = lineData.split( /\s+/ );
					const faceVertices = []; // Parse the face vertex data into an easy to work with format

					for ( let j = 0, jl = vertexData.length; j < jl; j ++ ) {

						const vertex = vertexData[ j ];

						if ( vertex.length > 0 ) {

							const vertexParts = vertex.split( '/' );
							faceVertices.push( vertexParts );

						}

					} // Draw an edge between the first vertex and all subsequent vertices to form an n-gon


					const v1 = faceVertices[ 0 ];

					for ( let j = 1, jl = faceVertices.length - 1; j < jl; j ++ ) {

						const v2 = faceVertices[ j ];
						const v3 = faceVertices[ j + 1 ];
						state.addFace( v1[ 0 ], v2[ 0 ], v3[ 0 ], v1[ 1 ], v2[ 1 ], v3[ 1 ], v1[ 2 ], v2[ 2 ], v3[ 2 ] );

					}

				} else if ( lineFirstChar === 'l' ) {

					const lineParts = line.substring( 1 ).trim().split( ' ' );
					let lineVertices = [];
					const lineUVs = [];

					if ( line.indexOf( '/' ) === - 1 ) {

						lineVertices = lineParts;

					} else {

						for ( let li = 0, llen = lineParts.length; li < llen; li ++ ) {

							const parts = lineParts[ li ].split( '/' );
							if ( parts[ 0 ] !== '' ) lineVertices.push( parts[ 0 ] );
							if ( parts[ 1 ] !== '' ) lineUVs.push( parts[ 1 ] );

						}

					}

					state.addLineGeometry( lineVertices, lineUVs );

				} else if ( lineFirstChar === 'p' ) {

					const lineData = line.substr( 1 ).trim();
					const pointData = lineData.split( ' ' );
					state.addPointGeometry( pointData );

				} else if ( ( result = _object_pattern.exec( line ) ) !== null ) {

					// o object_name
					// or
					// g group_name
					// WORKAROUND: https://bugs.chromium.org/p/v8/issues/detail?id=2869
					// let name = result[ 0 ].substr( 1 ).trim();
					const name = ( ' ' + result[ 0 ].substr( 1 ).trim() ).substr( 1 );
					state.startObject( name );

				} else if ( _material_use_pattern.test( line ) ) {

					// material
					state.object.startMaterial( line.substring( 7 ).trim(), state.materialLibraries );

				} else if ( _material_library_pattern.test( line ) ) {

					// mtl file
					state.materialLibraries.push( line.substring( 7 ).trim() );

				} else if ( _map_use_pattern.test( line ) ) {

					// the line is parsed but ignored since the loader assumes textures are defined MTL files
					// (according to https://www.okino.com/conv/imp_wave.htm, 'usemap' is the old-style Wavefront texture reference method)
					console.warn( 'THREE.OBJLoader: Rendering identifier "usemap" not supported. Textures must be defined in MTL files.' );

				} else if ( lineFirstChar === 's' ) {

					result = line.split( ' ' ); // smooth shading
					// @todo Handle files that have varying smooth values for a set of faces inside one geometry,
					// but does not define a usemtl for each face set.
					// This should be detected and a dummy material created (later MultiMaterial and geometry groups).
					// This requires some care to not create extra material on each smooth value for "normal" obj files.
					// where explicit usemtl defines geometry groups.
					// Example asset: examples/models/obj/cerberus/Cerberus.obj

					/*
        	 * http://paulbourke.net/dataformats/obj/
        	 * or
        	 * http://www.cs.utah.edu/~boulos/cs3505/obj_spec.pdf
        	 *
        	 * From chapter "Grouping" Syntax explanation "s group_number":
        	 * "group_number is the smoothing group number. To turn off smoothing groups, use a value of 0 or off.
        	 * Polygonal elements use group numbers to put elements in different smoothing groups. For free-form
        	 * surfaces, smoothing groups are either turned on or off; there is no difference between values greater
        	 * than 0."
        	 */

					if ( result.length > 1 ) {

						const value = result[ 1 ].trim().toLowerCase();
						state.object.smooth = value !== '0' && value !== 'off';

					} else {

						// ZBrush can produce "s" lines #11707
						state.object.smooth = true;

					}

					const material = state.object.currentMaterial();
					if ( material ) material.smooth = state.object.smooth;

				} else {

					// Handle null terminated files without exception
					if ( line === '\0' ) continue;
					console.warn( 'THREE.OBJLoader: Unexpected line: "' + line + '"' );

				}

			}

			state.finalize();
			const container = new THREE.Group();
			container.materialLibraries = [].concat( state.materialLibraries );
			const hasPrimitives = ! ( state.objects.length === 1 && state.objects[ 0 ].geometry.vertices.length === 0 );

			if ( hasPrimitives === true ) {

				for ( let i = 0, l = state.objects.length; i < l; i ++ ) {

					const object = state.objects[ i ];
					const geometry = object.geometry;
					const materials = object.materials;
					const isLine = geometry.type === 'Line';
					const isPoints = geometry.type === 'Points';
					let hasVertexColors = false; // Skip o/g line declarations that did not follow with any faces

					if ( geometry.vertices.length === 0 ) continue;
					const buffergeometry = new THREE.BufferGeometry();
					buffergeometry.setAttribute( 'position', new THREE.Float32BufferAttribute( geometry.vertices, 3 ) );

					if ( geometry.normals.length > 0 ) {

						buffergeometry.setAttribute( 'normal', new THREE.Float32BufferAttribute( geometry.normals, 3 ) );

					}

					if ( geometry.colors.length > 0 ) {

						hasVertexColors = true;
						buffergeometry.setAttribute( 'color', new THREE.Float32BufferAttribute( geometry.colors, 3 ) );

					}

					if ( geometry.hasUVIndices === true ) {

						buffergeometry.setAttribute( 'uv', new THREE.Float32BufferAttribute( geometry.uvs, 2 ) );

					} // Create materials


					const createdMaterials = [];

					for ( let mi = 0, miLen = materials.length; mi < miLen; mi ++ ) {

						const sourceMaterial = materials[ mi ];
						const materialHash = sourceMaterial.name + '_' + sourceMaterial.smooth + '_' + hasVertexColors;
						let material = state.materials[ materialHash ];

						if ( this.materials !== null ) {

							material = this.materials.create( sourceMaterial.name ); // mtl etc. loaders probably can't create line materials correctly, copy properties to a line material.

							if ( isLine && material && ! ( material instanceof THREE.LineBasicMaterial ) ) {

								const materialLine = new THREE.LineBasicMaterial();
								THREE.Material.prototype.copy.call( materialLine, material );
								materialLine.color.copy( material.color );
								material = materialLine;

							} else if ( isPoints && material && ! ( material instanceof THREE.PointsMaterial ) ) {

								const materialPoints = new THREE.PointsMaterial( {
									size: 10,
									sizeAttenuation: false
								} );
								THREE.Material.prototype.copy.call( materialPoints, material );
								materialPoints.color.copy( material.color );
								materialPoints.map = material.map;
								material = materialPoints;

							}

						}

						if ( material === undefined ) {

							if ( isLine ) {

								material = new THREE.LineBasicMaterial();

							} else if ( isPoints ) {

								material = new THREE.PointsMaterial( {
									size: 1,
									sizeAttenuation: false
								} );

							} else {

								material = new THREE.MeshPhongMaterial();

							}

							material.name = sourceMaterial.name;
							material.flatShading = sourceMaterial.smooth ? false : true;
							material.vertexColors = hasVertexColors;
							state.materials[ materialHash ] = material;

						}

						createdMaterials.push( material );

					} // Create mesh


					let mesh;

					if ( createdMaterials.length > 1 ) {

						for ( let mi = 0, miLen = materials.length; mi < miLen; mi ++ ) {

							const sourceMaterial = materials[ mi ];
							buffergeometry.addGroup( sourceMaterial.groupStart, sourceMaterial.groupCount, mi );

						}

						if ( isLine ) {

							mesh = new THREE.LineSegments( buffergeometry, createdMaterials );

						} else if ( isPoints ) {

							mesh = new THREE.Points( buffergeometry, createdMaterials );

						} else {

							mesh = new THREE.Mesh( buffergeometry, createdMaterials );

						}

					} else {

						if ( isLine ) {

							mesh = new THREE.LineSegments( buffergeometry, createdMaterials[ 0 ] );

						} else if ( isPoints ) {

							mesh = new THREE.Points( buffergeometry, createdMaterials[ 0 ] );

						} else {

							mesh = new THREE.Mesh( buffergeometry, createdMaterials[ 0 ] );

						}

					}

					mesh.name = object.name;
					container.add( mesh );

				}

			} else {

				// if there is only the default parser state object with no geometry data, interpret data as point cloud
				if ( state.vertices.length > 0 ) {

					const material = new THREE.PointsMaterial( {
						size: 1,
						sizeAttenuation: false
					} );
					const buffergeometry = new THREE.BufferGeometry();
					buffergeometry.setAttribute( 'position', new THREE.Float32BufferAttribute( state.vertices, 3 ) );

					if ( state.colors.length > 0 && state.colors[ 0 ] !== undefined ) {

						buffergeometry.setAttribute( 'color', new THREE.Float32BufferAttribute( state.colors, 3 ) );
						material.vertexColors = true;

					}

					const points = new THREE.Points( buffergeometry, material );
					container.add( points );

				}

			}

			return container;

		}

	}

	THREE.OBJLoader = OBJLoader;

} )();

},{}],63:[function(require,module,exports){
( function () {

	function computeTangents( geometry ) {

		geometry.computeTangents();
		console.warn( 'THREE.BufferGeometryUtils: .computeTangents() has been removed. Use THREE.BufferGeometry.computeTangents() instead.' );

	}
	/**
	 * @param  {Array<BufferGeometry>} geometries
	 * @param  {Boolean} useGroups
	 * @return {BufferGeometry}
	 */


	function mergeBufferGeometries( geometries, useGroups = false ) {

		const isIndexed = geometries[ 0 ].index !== null;
		const attributesUsed = new Set( Object.keys( geometries[ 0 ].attributes ) );
		const morphAttributesUsed = new Set( Object.keys( geometries[ 0 ].morphAttributes ) );
		const attributes = {};
		const morphAttributes = {};
		const morphTargetsRelative = geometries[ 0 ].morphTargetsRelative;
		const mergedGeometry = new THREE.BufferGeometry();
		let offset = 0;

		for ( let i = 0; i < geometries.length; ++ i ) {

			const geometry = geometries[ i ];
			let attributesCount = 0; // ensure that all geometries are indexed, or none

			if ( isIndexed !== ( geometry.index !== null ) ) {

				console.error( 'THREE.BufferGeometryUtils: .mergeBufferGeometries() failed with geometry at index ' + i + '. All geometries must have compatible attributes; make sure index attribute exists among all geometries, or in none of them.' );
				return null;

			} // gather attributes, exit early if they're different


			for ( const name in geometry.attributes ) {

				if ( ! attributesUsed.has( name ) ) {

					console.error( 'THREE.BufferGeometryUtils: .mergeBufferGeometries() failed with geometry at index ' + i + '. All geometries must have compatible attributes; make sure "' + name + '" attribute exists among all geometries, or in none of them.' );
					return null;

				}

				if ( attributes[ name ] === undefined ) attributes[ name ] = [];
				attributes[ name ].push( geometry.attributes[ name ] );
				attributesCount ++;

			} // ensure geometries have the same number of attributes


			if ( attributesCount !== attributesUsed.size ) {

				console.error( 'THREE.BufferGeometryUtils: .mergeBufferGeometries() failed with geometry at index ' + i + '. Make sure all geometries have the same number of attributes.' );
				return null;

			} // gather morph attributes, exit early if they're different


			if ( morphTargetsRelative !== geometry.morphTargetsRelative ) {

				console.error( 'THREE.BufferGeometryUtils: .mergeBufferGeometries() failed with geometry at index ' + i + '. .morphTargetsRelative must be consistent throughout all geometries.' );
				return null;

			}

			for ( const name in geometry.morphAttributes ) {

				if ( ! morphAttributesUsed.has( name ) ) {

					console.error( 'THREE.BufferGeometryUtils: .mergeBufferGeometries() failed with geometry at index ' + i + '.  .morphAttributes must be consistent throughout all geometries.' );
					return null;

				}

				if ( morphAttributes[ name ] === undefined ) morphAttributes[ name ] = [];
				morphAttributes[ name ].push( geometry.morphAttributes[ name ] );

			} // gather .userData


			mergedGeometry.userData.mergedUserData = mergedGeometry.userData.mergedUserData || [];
			mergedGeometry.userData.mergedUserData.push( geometry.userData );

			if ( useGroups ) {

				let count;

				if ( isIndexed ) {

					count = geometry.index.count;

				} else if ( geometry.attributes.position !== undefined ) {

					count = geometry.attributes.position.count;

				} else {

					console.error( 'THREE.BufferGeometryUtils: .mergeBufferGeometries() failed with geometry at index ' + i + '. The geometry must have either an index or a position attribute' );
					return null;

				}

				mergedGeometry.addGroup( offset, count, i );
				offset += count;

			}

		} // merge indices


		if ( isIndexed ) {

			let indexOffset = 0;
			const mergedIndex = [];

			for ( let i = 0; i < geometries.length; ++ i ) {

				const index = geometries[ i ].index;

				for ( let j = 0; j < index.count; ++ j ) {

					mergedIndex.push( index.getX( j ) + indexOffset );

				}

				indexOffset += geometries[ i ].attributes.position.count;

			}

			mergedGeometry.setIndex( mergedIndex );

		} // merge attributes


		for ( const name in attributes ) {

			const mergedAttribute = mergeBufferAttributes( attributes[ name ] );

			if ( ! mergedAttribute ) {

				console.error( 'THREE.BufferGeometryUtils: .mergeBufferGeometries() failed while trying to merge the ' + name + ' attribute.' );
				return null;

			}

			mergedGeometry.setAttribute( name, mergedAttribute );

		} // merge morph attributes


		for ( const name in morphAttributes ) {

			const numMorphTargets = morphAttributes[ name ][ 0 ].length;
			if ( numMorphTargets === 0 ) break;
			mergedGeometry.morphAttributes = mergedGeometry.morphAttributes || {};
			mergedGeometry.morphAttributes[ name ] = [];

			for ( let i = 0; i < numMorphTargets; ++ i ) {

				const morphAttributesToMerge = [];

				for ( let j = 0; j < morphAttributes[ name ].length; ++ j ) {

					morphAttributesToMerge.push( morphAttributes[ name ][ j ][ i ] );

				}

				const mergedMorphAttribute = mergeBufferAttributes( morphAttributesToMerge );

				if ( ! mergedMorphAttribute ) {

					console.error( 'THREE.BufferGeometryUtils: .mergeBufferGeometries() failed while trying to merge the ' + name + ' morphAttribute.' );
					return null;

				}

				mergedGeometry.morphAttributes[ name ].push( mergedMorphAttribute );

			}

		}

		return mergedGeometry;

	}
	/**
 * @param {Array<BufferAttribute>} attributes
 * @return {BufferAttribute}
 */


	function mergeBufferAttributes( attributes ) {

		let TypedArray;
		let itemSize;
		let normalized;
		let arrayLength = 0;

		for ( let i = 0; i < attributes.length; ++ i ) {

			const attribute = attributes[ i ];

			if ( attribute.isInterleavedBufferAttribute ) {

				console.error( 'THREE.BufferGeometryUtils: .mergeBufferAttributes() failed. InterleavedBufferAttributes are not supported.' );
				return null;

			}

			if ( TypedArray === undefined ) TypedArray = attribute.array.constructor;

			if ( TypedArray !== attribute.array.constructor ) {

				console.error( 'THREE.BufferGeometryUtils: .mergeBufferAttributes() failed. THREE.BufferAttribute.array must be of consistent array types across matching attributes.' );
				return null;

			}

			if ( itemSize === undefined ) itemSize = attribute.itemSize;

			if ( itemSize !== attribute.itemSize ) {

				console.error( 'THREE.BufferGeometryUtils: .mergeBufferAttributes() failed. THREE.BufferAttribute.itemSize must be consistent across matching attributes.' );
				return null;

			}

			if ( normalized === undefined ) normalized = attribute.normalized;

			if ( normalized !== attribute.normalized ) {

				console.error( 'THREE.BufferGeometryUtils: .mergeBufferAttributes() failed. THREE.BufferAttribute.normalized must be consistent across matching attributes.' );
				return null;

			}

			arrayLength += attribute.array.length;

		}

		const array = new TypedArray( arrayLength );
		let offset = 0;

		for ( let i = 0; i < attributes.length; ++ i ) {

			array.set( attributes[ i ].array, offset );
			offset += attributes[ i ].array.length;

		}

		return new THREE.BufferAttribute( array, itemSize, normalized );

	}
	/**
 * @param {Array<BufferAttribute>} attributes
 * @return {Array<InterleavedBufferAttribute>}
 */


	function interleaveAttributes( attributes ) {

		// Interleaves the provided attributes into an THREE.InterleavedBuffer and returns
		// a set of InterleavedBufferAttributes for each attribute
		let TypedArray;
		let arrayLength = 0;
		let stride = 0; // calculate the the length and type of the interleavedBuffer

		for ( let i = 0, l = attributes.length; i < l; ++ i ) {

			const attribute = attributes[ i ];
			if ( TypedArray === undefined ) TypedArray = attribute.array.constructor;

			if ( TypedArray !== attribute.array.constructor ) {

				console.error( 'AttributeBuffers of different types cannot be interleaved' );
				return null;

			}

			arrayLength += attribute.array.length;
			stride += attribute.itemSize;

		} // Create the set of buffer attributes


		const interleavedBuffer = new THREE.InterleavedBuffer( new TypedArray( arrayLength ), stride );
		let offset = 0;
		const res = [];
		const getters = [ 'getX', 'getY', 'getZ', 'getW' ];
		const setters = [ 'setX', 'setY', 'setZ', 'setW' ];

		for ( let j = 0, l = attributes.length; j < l; j ++ ) {

			const attribute = attributes[ j ];
			const itemSize = attribute.itemSize;
			const count = attribute.count;
			const iba = new THREE.InterleavedBufferAttribute( interleavedBuffer, itemSize, offset, attribute.normalized );
			res.push( iba );
			offset += itemSize; // Move the data for each attribute into the new interleavedBuffer
			// at the appropriate offset

			for ( let c = 0; c < count; c ++ ) {

				for ( let k = 0; k < itemSize; k ++ ) {

					iba[ setters[ k ] ]( c, attribute[ getters[ k ] ]( c ) );

				}

			}

		}

		return res;

	}
	/**
 * @param {Array<BufferGeometry>} geometry
 * @return {number}
 */


	function estimateBytesUsed( geometry ) {

		// Return the estimated memory used by this geometry in bytes
		// Calculate using itemSize, count, and BYTES_PER_ELEMENT to account
		// for InterleavedBufferAttributes.
		let mem = 0;

		for ( const name in geometry.attributes ) {

			const attr = geometry.getAttribute( name );
			mem += attr.count * attr.itemSize * attr.array.BYTES_PER_ELEMENT;

		}

		const indices = geometry.getIndex();
		mem += indices ? indices.count * indices.itemSize * indices.array.BYTES_PER_ELEMENT : 0;
		return mem;

	}
	/**
 * @param {BufferGeometry} geometry
 * @param {number} tolerance
 * @return {BufferGeometry>}
 */


	function mergeVertices( geometry, tolerance = 1e-4 ) {

		tolerance = Math.max( tolerance, Number.EPSILON ); // Generate an index buffer if the geometry doesn't have one, or optimize it
		// if it's already available.

		const hashToIndex = {};
		const indices = geometry.getIndex();
		const positions = geometry.getAttribute( 'position' );
		const vertexCount = indices ? indices.count : positions.count; // next value for triangle indices

		let nextIndex = 0; // attributes and new attribute arrays

		const attributeNames = Object.keys( geometry.attributes );
		const attrArrays = {};
		const morphAttrsArrays = {};
		const newIndices = [];
		const getters = [ 'getX', 'getY', 'getZ', 'getW' ]; // initialize the arrays

		for ( let i = 0, l = attributeNames.length; i < l; i ++ ) {

			const name = attributeNames[ i ];
			attrArrays[ name ] = [];
			const morphAttr = geometry.morphAttributes[ name ];

			if ( morphAttr ) {

				morphAttrsArrays[ name ] = new Array( morphAttr.length ).fill().map( () => [] );

			}

		} // convert the error tolerance to an amount of decimal places to truncate to


		const decimalShift = Math.log10( 1 / tolerance );
		const shiftMultiplier = Math.pow( 10, decimalShift );

		for ( let i = 0; i < vertexCount; i ++ ) {

			const index = indices ? indices.getX( i ) : i; // Generate a hash for the vertex attributes at the current index 'i'

			let hash = '';

			for ( let j = 0, l = attributeNames.length; j < l; j ++ ) {

				const name = attributeNames[ j ];
				const attribute = geometry.getAttribute( name );
				const itemSize = attribute.itemSize;

				for ( let k = 0; k < itemSize; k ++ ) {

					// double tilde truncates the decimal value
					hash += `${~ ~ ( attribute[ getters[ k ] ]( index ) * shiftMultiplier )},`;

				}

			} // Add another reference to the vertex if it's already
			// used by another index


			if ( hash in hashToIndex ) {

				newIndices.push( hashToIndex[ hash ] );

			} else {

				// copy data to the new index in the attribute arrays
				for ( let j = 0, l = attributeNames.length; j < l; j ++ ) {

					const name = attributeNames[ j ];
					const attribute = geometry.getAttribute( name );
					const morphAttr = geometry.morphAttributes[ name ];
					const itemSize = attribute.itemSize;
					const newarray = attrArrays[ name ];
					const newMorphArrays = morphAttrsArrays[ name ];

					for ( let k = 0; k < itemSize; k ++ ) {

						const getterFunc = getters[ k ];
						newarray.push( attribute[ getterFunc ]( index ) );

						if ( morphAttr ) {

							for ( let m = 0, ml = morphAttr.length; m < ml; m ++ ) {

								newMorphArrays[ m ].push( morphAttr[ m ][ getterFunc ]( index ) );

							}

						}

					}

				}

				hashToIndex[ hash ] = nextIndex;
				newIndices.push( nextIndex );
				nextIndex ++;

			}

		} // Generate typed arrays from new attribute arrays and update
		// the attributeBuffers


		const result = geometry.clone();

		for ( let i = 0, l = attributeNames.length; i < l; i ++ ) {

			const name = attributeNames[ i ];
			const oldAttribute = geometry.getAttribute( name );
			const buffer = new oldAttribute.array.constructor( attrArrays[ name ] );
			const attribute = new THREE.BufferAttribute( buffer, oldAttribute.itemSize, oldAttribute.normalized );
			result.setAttribute( name, attribute ); // Update the attribute arrays

			if ( name in morphAttrsArrays ) {

				for ( let j = 0; j < morphAttrsArrays[ name ].length; j ++ ) {

					const oldMorphAttribute = geometry.morphAttributes[ name ][ j ];
					const buffer = new oldMorphAttribute.array.constructor( morphAttrsArrays[ name ][ j ] );
					const morphAttribute = new THREE.BufferAttribute( buffer, oldMorphAttribute.itemSize, oldMorphAttribute.normalized );
					result.morphAttributes[ name ][ j ] = morphAttribute;

				}

			}

		} // indices


		result.setIndex( newIndices );
		return result;

	}
	/**
 * @param {BufferGeometry} geometry
 * @param {number} drawMode
 * @return {BufferGeometry>}
 */


	function toTrianglesDrawMode( geometry, drawMode ) {

		if ( drawMode === THREE.TrianglesDrawMode ) {

			console.warn( 'THREE.BufferGeometryUtils.toTrianglesDrawMode(): Geometry already defined as triangles.' );
			return geometry;

		}

		if ( drawMode === THREE.TriangleFanDrawMode || drawMode === THREE.TriangleStripDrawMode ) {

			let index = geometry.getIndex(); // generate index if not present

			if ( index === null ) {

				const indices = [];
				const position = geometry.getAttribute( 'position' );

				if ( position !== undefined ) {

					for ( let i = 0; i < position.count; i ++ ) {

						indices.push( i );

					}

					geometry.setIndex( indices );
					index = geometry.getIndex();

				} else {

					console.error( 'THREE.BufferGeometryUtils.toTrianglesDrawMode(): Undefined position attribute. Processing not possible.' );
					return geometry;

				}

			} //


			const numberOfTriangles = index.count - 2;
			const newIndices = [];

			if ( drawMode === THREE.TriangleFanDrawMode ) {

				// gl.TRIANGLE_FAN
				for ( let i = 1; i <= numberOfTriangles; i ++ ) {

					newIndices.push( index.getX( 0 ) );
					newIndices.push( index.getX( i ) );
					newIndices.push( index.getX( i + 1 ) );

				}

			} else {

				// gl.TRIANGLE_STRIP
				for ( let i = 0; i < numberOfTriangles; i ++ ) {

					if ( i % 2 === 0 ) {

						newIndices.push( index.getX( i ) );
						newIndices.push( index.getX( i + 1 ) );
						newIndices.push( index.getX( i + 2 ) );

					} else {

						newIndices.push( index.getX( i + 2 ) );
						newIndices.push( index.getX( i + 1 ) );
						newIndices.push( index.getX( i ) );

					}

				}

			}

			if ( newIndices.length / 3 !== numberOfTriangles ) {

				console.error( 'THREE.BufferGeometryUtils.toTrianglesDrawMode(): Unable to generate correct amount of triangles.' );

			} // build final geometry


			const newGeometry = geometry.clone();
			newGeometry.setIndex( newIndices );
			newGeometry.clearGroups();
			return newGeometry;

		} else {

			console.error( 'THREE.BufferGeometryUtils.toTrianglesDrawMode(): Unknown draw mode:', drawMode );
			return geometry;

		}

	}
	/**
 * Calculates the morphed attributes of a morphed/skinned THREE.BufferGeometry.
 * Helpful for Raytracing or Decals.
 * @param {Mesh | Line | Points} object An instance of Mesh, Line or Points.
 * @return {Object} An Object with original position/normal attributes and morphed ones.
 */


	function computeMorphedAttributes( object ) {

		if ( object.geometry.isBufferGeometry !== true ) {

			console.error( 'THREE.BufferGeometryUtils: Geometry is not of type THREE.BufferGeometry.' );
			return null;

		}

		const _vA = new THREE.Vector3();

		const _vB = new THREE.Vector3();

		const _vC = new THREE.Vector3();

		const _tempA = new THREE.Vector3();

		const _tempB = new THREE.Vector3();

		const _tempC = new THREE.Vector3();

		const _morphA = new THREE.Vector3();

		const _morphB = new THREE.Vector3();

		const _morphC = new THREE.Vector3();

		function _calculateMorphedAttributeData( object, material, attribute, morphAttribute, morphTargetsRelative, a, b, c, modifiedAttributeArray ) {

			_vA.fromBufferAttribute( attribute, a );

			_vB.fromBufferAttribute( attribute, b );

			_vC.fromBufferAttribute( attribute, c );

			const morphInfluences = object.morphTargetInfluences;

			if ( material.morphTargets && morphAttribute && morphInfluences ) {

				_morphA.set( 0, 0, 0 );

				_morphB.set( 0, 0, 0 );

				_morphC.set( 0, 0, 0 );

				for ( let i = 0, il = morphAttribute.length; i < il; i ++ ) {

					const influence = morphInfluences[ i ];
					const morph = morphAttribute[ i ];
					if ( influence === 0 ) continue;

					_tempA.fromBufferAttribute( morph, a );

					_tempB.fromBufferAttribute( morph, b );

					_tempC.fromBufferAttribute( morph, c );

					if ( morphTargetsRelative ) {

						_morphA.addScaledVector( _tempA, influence );

						_morphB.addScaledVector( _tempB, influence );

						_morphC.addScaledVector( _tempC, influence );

					} else {

						_morphA.addScaledVector( _tempA.sub( _vA ), influence );

						_morphB.addScaledVector( _tempB.sub( _vB ), influence );

						_morphC.addScaledVector( _tempC.sub( _vC ), influence );

					}

				}

				_vA.add( _morphA );

				_vB.add( _morphB );

				_vC.add( _morphC );

			}

			if ( object.isSkinnedMesh ) {

				object.boneTransform( a, _vA );
				object.boneTransform( b, _vB );
				object.boneTransform( c, _vC );

			}

			modifiedAttributeArray[ a * 3 + 0 ] = _vA.x;
			modifiedAttributeArray[ a * 3 + 1 ] = _vA.y;
			modifiedAttributeArray[ a * 3 + 2 ] = _vA.z;
			modifiedAttributeArray[ b * 3 + 0 ] = _vB.x;
			modifiedAttributeArray[ b * 3 + 1 ] = _vB.y;
			modifiedAttributeArray[ b * 3 + 2 ] = _vB.z;
			modifiedAttributeArray[ c * 3 + 0 ] = _vC.x;
			modifiedAttributeArray[ c * 3 + 1 ] = _vC.y;
			modifiedAttributeArray[ c * 3 + 2 ] = _vC.z;

		}

		const geometry = object.geometry;
		const material = object.material;
		let a, b, c;
		const index = geometry.index;
		const positionAttribute = geometry.attributes.position;
		const morphPosition = geometry.morphAttributes.position;
		const morphTargetsRelative = geometry.morphTargetsRelative;
		const normalAttribute = geometry.attributes.normal;
		const morphNormal = geometry.morphAttributes.position;
		const groups = geometry.groups;
		const drawRange = geometry.drawRange;
		let i, j, il, jl;
		let group, groupMaterial;
		let start, end;
		const modifiedPosition = new Float32Array( positionAttribute.count * positionAttribute.itemSize );
		const modifiedNormal = new Float32Array( normalAttribute.count * normalAttribute.itemSize );

		if ( index !== null ) {

			// indexed buffer geometry
			if ( Array.isArray( material ) ) {

				for ( i = 0, il = groups.length; i < il; i ++ ) {

					group = groups[ i ];
					groupMaterial = material[ group.materialIndex ];
					start = Math.max( group.start, drawRange.start );
					end = Math.min( group.start + group.count, drawRange.start + drawRange.count );

					for ( j = start, jl = end; j < jl; j += 3 ) {

						a = index.getX( j );
						b = index.getX( j + 1 );
						c = index.getX( j + 2 );

						_calculateMorphedAttributeData( object, groupMaterial, positionAttribute, morphPosition, morphTargetsRelative, a, b, c, modifiedPosition );

						_calculateMorphedAttributeData( object, groupMaterial, normalAttribute, morphNormal, morphTargetsRelative, a, b, c, modifiedNormal );

					}

				}

			} else {

				start = Math.max( 0, drawRange.start );
				end = Math.min( index.count, drawRange.start + drawRange.count );

				for ( i = start, il = end; i < il; i += 3 ) {

					a = index.getX( i );
					b = index.getX( i + 1 );
					c = index.getX( i + 2 );

					_calculateMorphedAttributeData( object, material, positionAttribute, morphPosition, morphTargetsRelative, a, b, c, modifiedPosition );

					_calculateMorphedAttributeData( object, material, normalAttribute, morphNormal, morphTargetsRelative, a, b, c, modifiedNormal );

				}

			}

		} else if ( positionAttribute !== undefined ) {

			// non-indexed buffer geometry
			if ( Array.isArray( material ) ) {

				for ( i = 0, il = groups.length; i < il; i ++ ) {

					group = groups[ i ];
					groupMaterial = material[ group.materialIndex ];
					start = Math.max( group.start, drawRange.start );
					end = Math.min( group.start + group.count, drawRange.start + drawRange.count );

					for ( j = start, jl = end; j < jl; j += 3 ) {

						a = j;
						b = j + 1;
						c = j + 2;

						_calculateMorphedAttributeData( object, groupMaterial, positionAttribute, morphPosition, morphTargetsRelative, a, b, c, modifiedPosition );

						_calculateMorphedAttributeData( object, groupMaterial, normalAttribute, morphNormal, morphTargetsRelative, a, b, c, modifiedNormal );

					}

				}

			} else {

				start = Math.max( 0, drawRange.start );
				end = Math.min( positionAttribute.count, drawRange.start + drawRange.count );

				for ( i = start, il = end; i < il; i += 3 ) {

					a = i;
					b = i + 1;
					c = i + 2;

					_calculateMorphedAttributeData( object, material, positionAttribute, morphPosition, morphTargetsRelative, a, b, c, modifiedPosition );

					_calculateMorphedAttributeData( object, material, normalAttribute, morphNormal, morphTargetsRelative, a, b, c, modifiedNormal );

				}

			}

		}

		const morphedPositionAttribute = new THREE.Float32BufferAttribute( modifiedPosition, 3 );
		const morphedNormalAttribute = new THREE.Float32BufferAttribute( modifiedNormal, 3 );
		return {
			positionAttribute: positionAttribute,
			normalAttribute: normalAttribute,
			morphedPositionAttribute: morphedPositionAttribute,
			morphedNormalAttribute: morphedNormalAttribute
		};

	}

	THREE.BufferGeometryUtils = {};
	THREE.BufferGeometryUtils.computeMorphedAttributes = computeMorphedAttributes;
	THREE.BufferGeometryUtils.computeTangents = computeTangents;
	THREE.BufferGeometryUtils.estimateBytesUsed = estimateBytesUsed;
	THREE.BufferGeometryUtils.interleaveAttributes = interleaveAttributes;
	THREE.BufferGeometryUtils.mergeBufferAttributes = mergeBufferAttributes;
	THREE.BufferGeometryUtils.mergeBufferGeometries = mergeBufferGeometries;
	THREE.BufferGeometryUtils.mergeVertices = mergeVertices;
	THREE.BufferGeometryUtils.toTrianglesDrawMode = toTrianglesDrawMode;

} )();

},{}],64:[function(require,module,exports){
var createLayout = require('layout-bmfont-text')
var inherits = require('inherits')
var createIndices = require('quad-indices')
var buffer = require('three-buffer-vertex-data')
var assign = require('object-assign')

var vertices = require('./lib/vertices')
var utils = require('./lib/utils')


module.exports = function createTextGeometry (opt) {
  return new TextGeometry(opt)
}

class TextGeometry extends THREE.BufferGeometry {
  constructor (opt) {
    super()
    
    if (typeof opt === 'string') {
      opt = { text: opt }
    }

    // use these as default values for any subsequent
    // calls to update()
    this._opt = assign({}, opt)

    // also do an initial setup...
    if (opt) this.update(opt)
  }

  update(opt) {
    if (typeof opt === 'string') {
      opt = { text: opt }
    }

    // use constructor defaults
    opt = assign({}, this._opt, opt)

    if (!opt.font) {
      throw new TypeError('must specify a { font } in options')
    }

    this.layout = createLayout(opt)

    // get vec2 texcoords
    var flipY = opt.flipY !== false

    // the desired BMFont data
    var font = opt.font

    // determine texture size from font file
    var texWidth = font.common.scaleW
    var texHeight = font.common.scaleH

    // get visible glyphs
    var glyphs = this.layout.glyphs.filter(function (glyph) {
      var bitmap = glyph.data
      return bitmap.width * bitmap.height > 0
    })

    // provide visible glyphs for convenience
    this.visibleGlyphs = glyphs

    // get common vertex data
    var positions = vertices.positions(glyphs)
    var uvs = vertices.uvs(glyphs, texWidth, texHeight, flipY)
    var indices = createIndices({
      clockwise: true,
      type: 'uint16',
      count: glyphs.length
    })

    // update vertex data
    buffer.index(this, indices, 1, 'uint16')
    buffer.attr(this, 'position', positions, 2)
    buffer.attr(this, 'uv', uvs, 2)

    // update multipage data
    if (!opt.multipage && 'page' in this.attributes) {
      // disable multipage rendering
      this.removeAttribute('page')
    } else if (opt.multipage) {
      var pages = vertices.pages(glyphs)
      // enable multipage rendering
      buffer.attr(this, 'page', pages, 1)
    }
  }

  computeBoundingSphere() {
    if (this.boundingSphere === null) {
      this.boundingSphere = new THREE.Sphere()
    }

    var positions = this.attributes.position.array
    var itemSize = this.attributes.position.itemSize
    if (!positions || !itemSize || positions.length < 2) {
      this.boundingSphere.radius = 0
      this.boundingSphere.center.set(0, 0, 0)
      return
    }
    utils.computeSphere(positions, this.boundingSphere)
    if (isNaN(this.boundingSphere.radius)) {
      console.error('THREE.BufferGeometry.computeBoundingSphere(): ' +
        'Computed radius is NaN. The ' +
        '"position" attribute is likely to have NaN values.')
    }
  }

  computeBoundingBox() {
    if (this.boundingBox === null) {
      this.boundingBox = new THREE.Box3()
    }

    var bbox = this.boundingBox
    var positions = this.attributes.position.array
    var itemSize = this.attributes.position.itemSize
    if (!positions || !itemSize || positions.length < 2) {
      bbox.makeEmpty()
      return
    }
    utils.computeBox(positions, bbox)
  }

}

},{"./lib/utils":65,"./lib/vertices":66,"inherits":30,"layout-bmfont-text":36,"object-assign":39,"quad-indices":51,"three-buffer-vertex-data":67}],65:[function(require,module,exports){
function bounds(x){var m=x.length/itemSize;box.min[0]=x[0],box.min[1]=x[1],box.max[0]=x[0],box.max[1]=x[1];for(var o=0;o<m;o++){var i=x[o*itemSize+0],a=x[o*itemSize+1];box.min[0]=Math.min(i,box.min[0]),box.min[1]=Math.min(a,box.min[1]),box.max[0]=Math.max(i,box.max[0]),box.max[1]=Math.max(a,box.max[1])}}var itemSize=2,box={min:[0,0],max:[0,0]};module.exports.computeBox=function(x,m){bounds(x),m.min.set(box.min[0],box.min[1],0),m.max.set(box.max[0],box.max[1],0)},module.exports.computeSphere=function(x,m){bounds(x);var o=box.min[0],i=box.min[1],a=box.max[0],n=box.max[1],b=a-o,e=n-i,t=Math.sqrt(b*b+e*e);m.center.set(o+b/2,i+e/2,0),m.radius=t/2};
},{}],66:[function(require,module,exports){
module.exports.pages=function(t){var o=new Float32Array(4*t.length*1),n=0;return t.forEach(function(t){var r=t.data.page||0;o[n++]=r,o[n++]=r,o[n++]=r,o[n++]=r}),o},module.exports.uvs=function(t,o,n,r){var a=new Float32Array(4*t.length*2),e=0;return t.forEach(function(t){var i=t.data,f=i.x+i.width,u=i.y+i.height,h=i.x/o,s=i.y/n,c=f/o,l=u/n;r&&(s=(n-i.y)/n,l=(n-u)/n),a[e++]=h,a[e++]=s,a[e++]=h,a[e++]=l,a[e++]=c,a[e++]=l,a[e++]=c,a[e++]=s}),a},module.exports.positions=function(t){var o=new Float32Array(4*t.length*2),n=0;return t.forEach(function(t){var r=t.data,a=t.position[0]+r.xoffset,e=t.position[1]+r.yoffset,i=r.width,f=r.height;o[n++]=a,o[n++]=e,o[n++]=a,o[n++]=e+f,o[n++]=a+i,o[n++]=e+f,o[n++]=a+i,o[n++]=e}),o};
},{}],67:[function(require,module,exports){
function setIndex(t,e,r,n){"number"!=typeof r&&(r=1),"string"!=typeof n&&(n="uint16");var i=!t.index&&"function"!=typeof t.setIndex,u=i?t.getAttribute("index"):t.index,a=updateAttribute(u,e,r,n);a&&(i?t.addAttribute("index",a):t.index=a)}function setAttribute(t,e,r,n,i){if("number"!=typeof n&&(n=3),"string"!=typeof i&&(i="float32"),Array.isArray(r)&&Array.isArray(r[0])&&r[0].length!==n)throw new Error("Nested vertex array has unexpected size; expected "+n+" but found "+r[0].length);var u=t.getAttribute(e),a=updateAttribute(u,r,n,i);t.setAttribute(e,a)}function updateAttribute(t,e,r,n){return e=e||[],e=flatten(e,n),t=new THREE.BufferAttribute(e,r),t.itemSize=r,t.needsUpdate=!0,t}function rebuildAttribute(t,e,r){if(t.itemSize!==r)return!0;if(!t.array)return!0;var n=t.array.length;return Array.isArray(e)&&Array.isArray(e[0])?n!==e.length*r:n!==e.length}var flatten=require("flatten-vertex-data"),warned=!1;module.exports.attr=setAttribute,module.exports.index=setIndex;
},{"flatten-vertex-data":23}],68:[function(require,module,exports){
(function (setImmediate,clearImmediate){
function Timeout(e,t){this._id=e,this._clearFn=t}var nextTick=require("process/browser.js").nextTick,apply=Function.prototype.apply,slice=Array.prototype.slice,immediateIds={},nextImmediateId=0;exports.setTimeout=function(){return new Timeout(apply.call(setTimeout,window,arguments),clearTimeout)},exports.setInterval=function(){return new Timeout(apply.call(setInterval,window,arguments),clearInterval)},exports.clearTimeout=exports.clearInterval=function(e){e.close()},Timeout.prototype.unref=Timeout.prototype.ref=function(){},Timeout.prototype.close=function(){this._clearFn.call(window,this._id)},exports.enroll=function(e,t){clearTimeout(e._idleTimeoutId),e._idleTimeout=t},exports.unenroll=function(e){clearTimeout(e._idleTimeoutId),e._idleTimeout=-1},exports._unrefActive=exports.active=function(e){clearTimeout(e._idleTimeoutId);var t=e._idleTimeout;t>=0&&(e._idleTimeoutId=setTimeout(function(){e._onTimeout&&e._onTimeout()},t))},exports.setImmediate="function"==typeof setImmediate?setImmediate:function(e){var t=nextImmediateId++,i=!(arguments.length<2)&&slice.call(arguments,1);return immediateIds[t]=!0,nextTick(function(){immediateIds[t]&&(i?e.apply(null,i):e.call(null),exports.clearImmediate(t))}),t},exports.clearImmediate="function"==typeof clearImmediate?clearImmediate:function(e){delete immediateIds[e]};
}).call(this,require("timers").setImmediate,require("timers").clearImmediate)

},{"process/browser.js":49,"timers":68}],69:[function(require,module,exports){
(function (global){
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e.ELEMENT_ARRAY_BUFFER_BINDING:e.bindBuffer(e.ELEMENT_ARRAY_BUFFER,o);break;case e.FRAMEBUFFER_BINDING:e.bindFramebuffer(e.FRAMEBUFFER,o);break;case e.RENDERBUFFER_BINDING:e.bindRenderbuffer(e.RENDERBUFFER,o);break;case e.TEXTURE_BINDING_2D:var A=t[++a];if(A<e.TEXTURE0||A>e.TEXTURE31)break;e.activeTexture(A),e.bindTexture(e.TEXTURE_2D,o);break;case e.TEXTURE_BINDING_CUBE_MAP:var A=t[++a];if(A<e.TEXTURE0||A>e.TEXTURE31)break;e.activeTexture(A),e.bindTexture(e.TEXTURE_CUBE_MAP,o);break;case e.VIEWPORT:e.viewport(o[0],o[1],o[2],o[3]);break;case e.BLEND:case e.CULL_FACE:case e.DEPTH_TEST:case e.SCISSOR_TEST:case e.STENCIL_TEST:o?e.enable(s):e.disable(s);break;default:console.log("No GL restore behavior for 0x"+s.toString(16))}n&&e.activeTexture(n)}}function 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n=document.createElement("div"),t=n.style;t.backgroundColor="#CFD8DC",t.position="fixed",t.bottom=0,t.width="100%",t.height="48px",t.padding="14px 24px",t.boxSizing="border-box",t.color="#656A6B",e.appendChild(n);var a=document.createElement("div");a.style.float="left",a.innerHTML="No Cardboard viewer?";var s=document.createElement("a");s.href="https://www.google.com/get/cardboard/get-cardboard/",s.innerHTML="get one",s.target="_blank";var t=s.style;t.float="right",t.fontWeight=600,t.textTransform="uppercase",t.borderLeft="1px solid gray",t.paddingLeft="24px",t.textDecoration="none",t.color="#656A6B",n.appendChild(a),n.appendChild(s),this.overlay=e,this.text=r,this.hide()}function f(e){try{this.selectedKey=localStorage.getItem(we)}catch(e){console.error("Failed to load viewer profile: %s",e)}this.selectedKey||(this.selectedKey=e||ve),this.dialog=this.createDialog_(s.Viewers),this.root=null,this.onChangeCallbacks_=[]}function m(){this.leftProjectionMatrix=new 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g({hasPosition:!1,hasOrientation:!1,hasExternalDisplay:!1,canPresent:!1,maxLayers:1}),this.stageParameters=null,this.waitingForPresent_=!1,this.layer_=null,this.originalParent_=null,this.fullscreenElement_=null,this.fullscreenWrapper_=null,this.fullscreenElementCachedStyle_=null,this.fullscreenEventTarget_=null,this.fullscreenChangeHandler_=null,this.fullscreenErrorHandler_=null,t&&z()&&(this.wakelock_=new Ee)}function w(e){var t=H({},Te);e=H(t,e||{}),v.call(this,{wakelock:e.MOBILE_WAKE_LOCK}),this.config=e,this.displayName="Cardboard VRDisplay",this.capabilities=new g({hasPosition:!1,hasOrientation:!0,hasExternalDisplay:!1,canPresent:!0,maxLayers:1}),this.stageParameters=null,this.bufferScale_=this.config.BUFFER_SCALE,this.poseSensor_=new ge(this.config),this.distorter_=null,this.cardboardUI_=null,this.dpdb_=new o(this.config.DPDB_URL,this.onDeviceParamsUpdated_.bind(this)),this.deviceInfo_=new s(this.dpdb_.getDeviceParams(),e.ADDITIONAL_VIEWERS),this.viewerSelector_=new 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e=this.gl,t=this.gl.canvas;M()||(Object.defineProperty(t,"width",this.realCanvasWidth),Object.defineProperty(t,"height",this.realCanvasHeight)),t.width=this.bufferWidth,t.height=this.bufferHeight,e.bindFramebuffer=this.realBindFramebuffer,e.enable=this.realEnable,e.disable=this.realDisable,e.colorMask=this.realColorMask,e.clearColor=this.realClearColor,e.viewport=this.realViewport,this.lastBoundFramebuffer==this.framebuffer&&e.bindFramebuffer(e.FRAMEBUFFER,null),this.isPatched=!1,setTimeout(function(){W(t)},1)}},i.prototype.setTextureBounds=function(e,t){e||(e=[0,0,.5,1]),t||(t=[.5,0,.5,1]),this.viewportOffsetScale[0]=e[0],this.viewportOffsetScale[1]=e[1],this.viewportOffsetScale[2]=e[2],this.viewportOffsetScale[3]=e[3],this.viewportOffsetScale[4]=t[0],this.viewportOffsetScale[5]=t[1],this.viewportOffsetScale[6]=t[2],this.viewportOffsetScale[7]=t[3]},i.prototype.submitFrame=function(){var e=this.gl,t=this,i=[];if(this.dirtySubmitFrameBindings||i.push(e.CURRENT_PROGRAM,e.ARRAY_BUFFER_BINDING,e.ELEMENT_ARRAY_BUFFER_BINDING,e.TEXTURE_BINDING_2D,e.TEXTURE0),q(e,i,function(e){t.realBindFramebuffer.call(e,e.FRAMEBUFFER,null);var i=0,r=0;t.instanceExt&&(i=e.getVertexAttrib(t.attribs.position,t.instanceExt.VERTEX_ATTRIB_ARRAY_DIVISOR_ANGLE),r=e.getVertexAttrib(t.attribs.texCoord,t.instanceExt.VERTEX_ATTRIB_ARRAY_DIVISOR_ANGLE)),t.cullFace&&t.realDisable.call(e,e.CULL_FACE),t.depthTest&&t.realDisable.call(e,e.DEPTH_TEST),t.blend&&t.realDisable.call(e,e.BLEND),t.scissorTest&&t.realDisable.call(e,e.SCISSOR_TEST),t.stencilTest&&t.realDisable.call(e,e.STENCIL_TEST),t.realColorMask.call(e,!0,!0,!0,!0),t.realViewport.call(e,0,0,e.drawingBufferWidth,e.drawingBufferHeight),(t.ctxAttribs.alpha||M())&&(t.realClearColor.call(e,0,0,0,1),e.clear(e.COLOR_BUFFER_BIT)),e.useProgram(t.program),e.bindBuffer(e.ELEMENT_ARRAY_BUFFER,t.indexBuffer),e.bindBuffer(e.ARRAY_BUFFER,t.vertexBuffer),e.enableVertexAttribArray(t.attribs.position),e.enableVertexAttribArray(t.attribs.texCoord),e.vertexAttribPointer(t.attribs.position,2,e.FLOAT,!1,20,0),e.vertexAttribPointer(t.attribs.texCoord,3,e.FLOAT,!1,20,8),t.instanceExt&&(0!=i&&t.instanceExt.vertexAttribDivisorANGLE(t.attribs.position,0),0!=r&&t.instanceExt.vertexAttribDivisorANGLE(t.attribs.texCoord,0)),e.activeTexture(e.TEXTURE0),e.uniform1i(t.uniforms.diffuse,0),e.bindTexture(e.TEXTURE_2D,t.renderTarget),e.uniform4fv(t.uniforms.viewportOffsetScale,t.viewportOffsetScale),e.drawElements(e.TRIANGLES,t.indexCount,e.UNSIGNED_SHORT,0),t.cardboardUI&&t.cardboardUI.renderNoState(),t.realBindFramebuffer.call(t.gl,e.FRAMEBUFFER,t.framebuffer),t.ctxAttribs.preserveDrawingBuffer||(t.realClearColor.call(e,0,0,0,0),e.clear(e.COLOR_BUFFER_BIT)),t.dirtySubmitFrameBindings||t.realBindFramebuffer.call(e,e.FRAMEBUFFER,t.lastBoundFramebuffer),t.cullFace&&t.realEnable.call(e,e.CULL_FACE),t.depthTest&&t.realEnable.call(e,e.DEPTH_TEST),t.blend&&t.realEnable.call(e,e.BLEND),t.scissorTest&&t.realEnable.call(e,e.SCISSOR_TEST),t.stencilTest&&t.realEnable.call(e,e.STENCIL_TEST),t.realColorMask.apply(e,t.colorMask),t.realViewport.apply(e,t.viewport),!t.ctxAttribs.alpha&&t.ctxAttribs.preserveDrawingBuffer||t.realClearColor.apply(e,t.clearColor),t.instanceExt&&(0!=i&&t.instanceExt.vertexAttribDivisorANGLE(t.attribs.position,i),0!=r&&t.instanceExt.vertexAttribDivisorANGLE(t.attribs.texCoord,r))}),M()){var r=e.canvas;r.width==t.bufferWidth&&r.height==t.bufferHeight||(t.bufferWidth=r.width,t.bufferHeight=r.height,t.onResize())}},i.prototype.updateDeviceInfo=function(e){var t=this.gl,i=this,r=[t.ARRAY_BUFFER_BINDING,t.ELEMENT_ARRAY_BUFFER_BINDING];q(t,r,function(t){var r=i.computeMeshVertices_(i.meshWidth,i.meshHeight,e);if(t.bindBuffer(t.ARRAY_BUFFER,i.vertexBuffer),t.bufferData(t.ARRAY_BUFFER,r,t.STATIC_DRAW),!i.indexCount){var n=i.computeMeshIndices_(i.meshWidth,i.meshHeight);t.bindBuffer(t.ELEMENT_ARRAY_BUFFER,i.indexBuffer),t.bufferData(t.ELEMENT_ARRAY_BUFFER,n,t.STATIC_DRAW),i.indexCount=n.length}})},i.prototype.computeMeshVertices_=function(e,t,i){for(var r=new Float32Array(2*e*t*5),n=i.getLeftEyeVisibleTanAngles(),a=i.getLeftEyeNoLensTanAngles(),s=i.getLeftEyeVisibleScreenRect(a),A=0,o=0;o<2;o++){for(var l=0;l<t;l++)for(var c=0;c<e;c++,A++){var h=c/(e-1),d=l/(t-1),u=h,p=d,f=D(n[0],n[2],h),m=D(n[3],n[1],d),g=Math.sqrt(f*f+m*m),v=i.distortion.distortInverse(g),w=f*v/g,y=m*v/g;h=(w-a[0])/(a[2]-a[0]),d=(y-a[3])/(a[1]-a[3]),h=2*(s.x+h*s.width-.5),d=2*(s.y+d*s.height-.5),r[5*A+0]=h,r[5*A+1]=d,r[5*A+2]=u,r[5*A+3]=p,r[5*A+4]=o}var E=n[2]-n[0];n[0]=-(E+n[0]),n[2]=E-n[2],E=a[2]-a[0],a[0]=-(E+a[0]),a[2]=E-a[2],s.x=1-(s.x+s.width)}return r},i.prototype.computeMeshIndices_=function(e,t){for(var i=new Uint16Array(2*(e-1)*(t-1)*6),r=e/2,n=t/2,a=0,s=0,A=0;A<2;A++)for(var o=0;o<t;o++)for(var l=0;l<e;l++,a++)0!=l&&0!=o&&(l<=r==o<=n?(i[s++]=a,i[s++]=a-e-1,i[s++]=a-e,i[s++]=a-e-1,i[s++]=a,i[s++]=a-1):(i[s++]=a-1,i[s++]=a-e,i[s++]=a,i[s++]=a-e,i[s++]=a-1,i[s++]=a-e-1));return i},i.prototype.getOwnPropertyDescriptor_=function(e,t){var i=Object.getOwnPropertyDescriptor(e,t);return void 0!==i.get&&void 0!==i.set||(i.configurable=!0,i.enumerable=!0,i.get=function(){return this.getAttribute(t)},i.set=function(e){this.setAttribute(t,e)}),i};var te=["attribute vec2 position;","uniform mat4 projectionMat;","void main() {","  gl_Position = projectionMat * vec4( position, -1.0, 1.0 );","}"].join("\n"),ie=["precision mediump float;","uniform vec4 color;","void main() {","  gl_FragColor = color;","}"].join("\n"),re=Math.PI/180,ne=.3125;r.prototype.destroy=function(){var e=this.gl;this.listener&&e.canvas.removeEventListener("click",this.listener,!1),e.deleteProgram(this.program),e.deleteBuffer(this.vertexBuffer)},r.prototype.listen=function(e,t){var i=this.gl.canvas;this.listener=function(r){var n=i.clientWidth/2;r.clientX>n-42&&r.clientX<n+42&&r.clientY>i.clientHeight-42?e(r):r.clientX<42&&r.clientY<42&&t(r)},i.addEventListener("click",this.listener,!1)},r.prototype.onResize=function(){var e=this.gl,t=this,i=[e.ARRAY_BUFFER_BINDING];q(e,i,function(e){function i(e,t){var i=(90-e)*re,r=Math.cos(i),s=Math.sin(i);n.push(ne*r*h+a,ne*s*h+h),n.push(t*r*h+a,t*s*h+h)}function r(t,i){n.push(d+t,e.drawingBufferHeight-d-i)}var n=[],a=e.drawingBufferWidth/2,s=Math.max(screen.width,screen.height)*window.devicePixelRatio,A=e.drawingBufferWidth/s,o=A*window.devicePixelRatio,l=4*o/2,c=42*o,h=28*o/2,d=14*o;n.push(a-l,c),n.push(a-l,e.drawingBufferHeight),n.push(a+l,c),n.push(a+l,e.drawingBufferHeight),t.gearOffset=n.length/2;for(var u=0;u<=6;u++){var p=60*u;i(p,1),i(p+12,1),i(p+20,.75),i(p+40,.75),i(p+48,1)}t.gearVertexCount=n.length/2-t.gearOffset,t.arrowOffset=n.length/2;var f=l/Math.sin(45*re);r(0,h),r(h,0),r(h+f,f),r(f,h+f),r(f,h-f),r(0,h),r(h,2*h),r(h+f,2*h-f),r(f,h-f),r(0,h),r(f,h-l),r(28*o,h-l),r(f,h+l),r(28*o,h+l),t.arrowVertexCount=n.length/2-t.arrowOffset,e.bindBuffer(e.ARRAY_BUFFER,t.vertexBuffer),e.bufferData(e.ARRAY_BUFFER,new Float32Array(n),e.STATIC_DRAW)})},r.prototype.render=function(){
var e=this.gl,t=this,i=[e.CULL_FACE,e.DEPTH_TEST,e.BLEND,e.SCISSOR_TEST,e.STENCIL_TEST,e.COLOR_WRITEMASK,e.VIEWPORT,e.CURRENT_PROGRAM,e.ARRAY_BUFFER_BINDING];q(e,i,function(e){e.disable(e.CULL_FACE),e.disable(e.DEPTH_TEST),e.disable(e.BLEND),e.disable(e.SCISSOR_TEST),e.disable(e.STENCIL_TEST),e.colorMask(!0,!0,!0,!0),e.viewport(0,0,e.drawingBufferWidth,e.drawingBufferHeight),t.renderNoState()})},r.prototype.renderNoState=function(){var e=this.gl;e.useProgram(this.program),e.bindBuffer(e.ARRAY_BUFFER,this.vertexBuffer),e.enableVertexAttribArray(this.attribs.position),e.vertexAttribPointer(this.attribs.position,2,e.FLOAT,!1,8,0),e.uniform4f(this.uniforms.color,1,1,1,1),V(this.projMat,0,e.drawingBufferWidth,0,e.drawingBufferHeight,.1,1024),e.uniformMatrix4fv(this.uniforms.projectionMat,!1,this.projMat),e.drawArrays(e.TRIANGLE_STRIP,0,4),e.drawArrays(e.TRIANGLE_STRIP,this.gearOffset,this.gearVertexCount),e.drawArrays(e.TRIANGLE_STRIP,this.arrowOffset,this.arrowVertexCount)},n.prototype.distortInverse=function(e){for(var t=0,i=1,r=e-this.distort(t);Math.abs(i-t)>1e-4;){var n=e-this.distort(i),a=i-n*((i-t)/(n-r));t=i,i=a,r=n}return i},n.prototype.distort=function(e){for(var t=e*e,i=0,r=0;r<this.coefficients.length;r++)i=t*(i+this.coefficients[r]);return(i+1)*e};var ae=Math.PI/180,se=180/Math.PI,Ae=function(e,t,i){this.x=e||0,this.y=t||0,this.z=i||0};Ae.prototype={constructor:Ae,set:function(e,t,i){return this.x=e,this.y=t,this.z=i,this},copy:function(e){return this.x=e.x,this.y=e.y,this.z=e.z,this},length:function(){return Math.sqrt(this.x*this.x+this.y*this.y+this.z*this.z)},normalize:function(){var e=this.length();if(0!==e){var t=1/e;this.multiplyScalar(t)}else this.x=0,this.y=0,this.z=0;return this},multiplyScalar:function(e){this.x*=e,this.y*=e,this.z*=e},applyQuaternion:function(e){var t=this.x,i=this.y,r=this.z,n=e.x,a=e.y,s=e.z,A=e.w,o=A*t+a*r-s*i,l=A*i+s*t-n*r,c=A*r+n*i-a*t,h=-n*t-a*i-s*r;return this.x=o*A+h*-n+l*-s-c*-a,this.y=l*A+h*-a+c*-n-o*-s,this.z=c*A+h*-s+o*-a-l*-n,this},dot:function(e){return this.x*e.x+this.y*e.y+this.z*e.z},crossVectors:function(e,t){var i=e.x,r=e.y,n=e.z,a=t.x,s=t.y,A=t.z;return this.x=r*A-n*s,this.y=n*a-i*A,this.z=i*s-r*a,this}};var oe=function(e,t,i,r){this.x=e||0,this.y=t||0,this.z=i||0,this.w=void 0!==r?r:1};oe.prototype={constructor:oe,set:function(e,t,i,r){return this.x=e,this.y=t,this.z=i,this.w=r,this},copy:function(e){return this.x=e.x,this.y=e.y,this.z=e.z,this.w=e.w,this},setFromEulerXYZ:function(e,t,i){var r=Math.cos(e/2),n=Math.cos(t/2),a=Math.cos(i/2),s=Math.sin(e/2),A=Math.sin(t/2),o=Math.sin(i/2);return this.x=s*n*a+r*A*o,this.y=r*A*a-s*n*o,this.z=r*n*o+s*A*a,this.w=r*n*a-s*A*o,this},setFromEulerYXZ:function(e,t,i){var r=Math.cos(e/2),n=Math.cos(t/2),a=Math.cos(i/2),s=Math.sin(e/2),A=Math.sin(t/2),o=Math.sin(i/2);return this.x=s*n*a+r*A*o,this.y=r*A*a-s*n*o,this.z=r*n*o-s*A*a,this.w=r*n*a+s*A*o,this},setFromAxisAngle:function(e,t){var i=t/2,r=Math.sin(i);return this.x=e.x*r,this.y=e.y*r,this.z=e.z*r,this.w=Math.cos(i),this},multiply:function(e){return this.multiplyQuaternions(this,e)},multiplyQuaternions:function(e,t){var i=e.x,r=e.y,n=e.z,a=e.w,s=t.x,A=t.y,o=t.z,l=t.w;return this.x=i*l+a*s+r*o-n*A,this.y=r*l+a*A+n*s-i*o,this.z=n*l+a*o+i*A-r*s,this.w=a*l-i*s-r*A-n*o,this},inverse:function(){return this.x*=-1,this.y*=-1,this.z*=-1,this.normalize(),this},normalize:function(){var e=Math.sqrt(this.x*this.x+this.y*this.y+this.z*this.z+this.w*this.w);return 0===e?(this.x=0,this.y=0,this.z=0,this.w=1):(e=1/e,this.x=this.x*e,this.y=this.y*e,this.z=this.z*e,this.w=this.w*e),this},slerp:function(e,t){if(0===t)return this;if(1===t)return this.copy(e);var i=this.x,r=this.y,n=this.z,a=this.w,s=a*e.w+i*e.x+r*e.y+n*e.z;if(s<0?(this.w=-e.w,this.x=-e.x,this.y=-e.y,this.z=-e.z,s=-s):this.copy(e),s>=1)return this.w=a,this.x=i,this.y=r,this.z=n,this;var A=Math.acos(s),o=Math.sqrt(1-s*s);if(Math.abs(o)<.001)return this.w=.5*(a+this.w),this.x=.5*(i+this.x),this.y=.5*(r+this.y),this.z=.5*(n+this.z),this;var l=Math.sin((1-t)*A)/o,c=Math.sin(t*A)/o;return this.w=a*l+this.w*c,this.x=i*l+this.x*c,this.y=r*l+this.y*c,this.z=n*l+this.z*c,this},setFromUnitVectors:function(){var e,t;return function(i,r){return void 0===e&&(e=new Ae),t=i.dot(r)+1,t<1e-6?(t=0,Math.abs(i.x)>Math.abs(i.z)?e.set(-i.y,i.x,0):e.set(0,-i.z,i.y)):e.crossVectors(i,r),this.x=e.x,this.y=e.y,this.z=e.z,this.w=t,this.normalize(),this}}()};var le=new a({widthMeters:.11,heightMeters:.062,bevelMeters:.004}),ce=new a({widthMeters:.1038,heightMeters:.0584,bevelMeters:.004}),he={CardboardV1:new A({id:"CardboardV1",label:"Cardboard I/O 2014",fov:40,interLensDistance:.06,baselineLensDistance:.035,screenLensDistance:.042,distortionCoefficients:[.441,.156],inverseCoefficients:[-.4410035,.42756155,-.4804439,.5460139,-.58821183,.5733938,-.48303202,.33299083,-.17573841,.0651772,-.01488963,.001559834]}),CardboardV2:new A({id:"CardboardV2",label:"Cardboard I/O 2015",fov:60,interLensDistance:.064,baselineLensDistance:.035,screenLensDistance:.039,distortionCoefficients:[.34,.55],inverseCoefficients:[-.33836704,-.18162185,.862655,-1.2462051,1.0560602,-.58208317,.21609078,-.05444823,.009177956,-.0009904169,6183535e-11,-16981803e-13]})};s.prototype.updateDeviceParams=function(e){this.device=this.determineDevice_(e)||this.device},s.prototype.getDevice=function(){return this.device},s.prototype.setViewer=function(e){this.viewer=e,this.distortion=new n(this.viewer.distortionCoefficients)},s.prototype.determineDevice_=function(e){if(!e)return M()?(console.warn("Using fallback iOS device measurements."),ce):(console.warn("Using fallback Android device measurements."),le);var t=.0254/e.xdpi,i=.0254/e.ydpi;return new a({widthMeters:t*P(),heightMeters:i*N(),bevelMeters:.001*e.bevelMm})},s.prototype.getDistortedFieldOfViewLeftEye=function(){var e=this.viewer,t=this.device,i=this.distortion,r=e.screenLensDistance,n=(t.widthMeters-e.interLensDistance)/2,a=e.interLensDistance/2,s=e.baselineLensDistance-t.bevelMeters,A=t.heightMeters-s,o=se*Math.atan(i.distort(n/r)),l=se*Math.atan(i.distort(a/r)),c=se*Math.atan(i.distort(s/r)),h=se*Math.atan(i.distort(A/r));return{leftDegrees:Math.min(o,e.fov),rightDegrees:Math.min(l,e.fov),downDegrees:Math.min(c,e.fov),upDegrees:Math.min(h,e.fov)}},s.prototype.getLeftEyeVisibleTanAngles=function(){var e=this.viewer,t=this.device,i=this.distortion,r=Math.tan(-ae*e.fov),n=Math.tan(ae*e.fov),a=Math.tan(ae*e.fov),s=Math.tan(-ae*e.fov),A=t.widthMeters/4,o=t.heightMeters/2,l=e.baselineLensDistance-t.bevelMeters-o,c=e.interLensDistance/2-A,h=-l,d=e.screenLensDistance,u=i.distort((c-A)/d),p=i.distort((h+o)/d),f=i.distort((c+A)/d),m=i.distort((h-o)/d),g=new Float32Array(4);return g[0]=Math.max(r,u),g[1]=Math.min(n,p),g[2]=Math.min(a,f),g[3]=Math.max(s,m),g},s.prototype.getLeftEyeNoLensTanAngles=function(){var e=this.viewer,t=this.device,i=this.distortion,r=new Float32Array(4),n=i.distortInverse(Math.tan(-ae*e.fov)),a=i.distortInverse(Math.tan(ae*e.fov)),s=i.distortInverse(Math.tan(ae*e.fov)),A=i.distortInverse(Math.tan(-ae*e.fov)),o=t.widthMeters/4,l=t.heightMeters/2,c=e.baselineLensDistance-t.bevelMeters-l,h=e.interLensDistance/2-o,d=-c,u=e.screenLensDistance,p=(h-o)/u,f=(d+l)/u,m=(h+o)/u,g=(d-l)/u;return r[0]=Math.max(n,p),r[1]=Math.min(a,f),r[2]=Math.min(s,m),r[3]=Math.max(A,g),r},s.prototype.getLeftEyeVisibleScreenRect=function(e){var t=this.viewer,i=this.device,r=t.screenLensDistance,n=(i.widthMeters-t.interLensDistance)/2,a=t.baselineLensDistance-i.bevelMeters,s=(e[0]*r+n)/i.widthMeters,A=(e[1]*r+a)/i.heightMeters,o=(e[2]*r+n)/i.widthMeters,l=(e[3]*r+a)/i.heightMeters;return{x:s,y:l,width:o-s,height:A-l}},s.prototype.getFieldOfViewLeftEye=function(e){return e?this.getUndistortedFieldOfViewLeftEye():this.getDistortedFieldOfViewLeftEye()},s.prototype.getFieldOfViewRightEye=function(e){var t=this.getFieldOfViewLeftEye(e);return{leftDegrees:t.rightDegrees,rightDegrees:t.leftDegrees,upDegrees:t.upDegrees,downDegrees:t.downDegrees}},s.prototype.getUndistortedFieldOfViewLeftEye=function(){var e=this.getUndistortedParams_();return{leftDegrees:se*Math.atan(e.outerDist),rightDegrees:se*Math.atan(e.innerDist),downDegrees:se*Math.atan(e.bottomDist),upDegrees:se*Math.atan(e.topDist)}},s.prototype.getUndistortedViewportLeftEye=function(){var e=this.getUndistortedParams_(),t=this.viewer,i=this.device,r=t.screenLensDistance,n=i.widthMeters/r,a=i.heightMeters/r,s=i.width/n,A=i.height/a,o=Math.round((e.eyePosX-e.outerDist)*s),l=Math.round((e.eyePosY-e.bottomDist)*A);return{x:o,y:l,width:Math.round((e.eyePosX+e.innerDist)*s)-o,height:Math.round((e.eyePosY+e.topDist)*A)-l}},s.prototype.getUndistortedParams_=function(){var e=this.viewer,t=this.device,i=this.distortion,r=e.screenLensDistance,n=e.interLensDistance/2/r,a=t.widthMeters/r,s=t.heightMeters/r,A=a/2-n,o=(e.baselineLensDistance-t.bevelMeters)/r,l=e.fov,c=i.distortInverse(Math.tan(ae*l)),h=Math.min(A,c),d=Math.min(n,c),u=Math.min(o,c);return{outerDist:h,innerDist:d,topDist:Math.min(s-o,c),bottomDist:u,eyePosX:A,eyePosY:o}},s.Viewers=he;var de=[{type:"android",rules:[{mdmh:"asus/*/Nexus 7/*"},{ua:"Nexus 7"}],dpi:[320.8,323],bw:3,ac:500},{type:"android",rules:[{mdmh:"asus/*/ASUS_X00PD/*"},{ua:"ASUS_X00PD"}],dpi:245,bw:3,ac:500},{type:"android",rules:[{mdmh:"asus/*/ASUS_X008D/*"},{ua:"ASUS_X008D"}],dpi:282,bw:3,ac:500},{type:"android",rules:[{mdmh:"asus/*/ASUS_Z00AD/*"},{ua:"ASUS_Z00AD"}],dpi:[403,404.6],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"Google/*/Pixel 2 XL/*"},{ua:"Pixel 2 XL"}],dpi:537.9,bw:3,ac:1e3},{type:"android",rules:[{mdmh:"Google/*/Pixel 3 XL/*"},{ua:"Pixel 3 XL"}],dpi:[558.5,553.8],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"Google/*/Pixel XL/*"},{ua:"Pixel XL"}],dpi:[537.9,533],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"Google/*/Pixel 3/*"},{ua:"Pixel 3"}],dpi:442.4,bw:3,ac:1e3},{type:"android",rules:[{mdmh:"Google/*/Pixel 2/*"},{ua:"Pixel 2"}],dpi:441,bw:3,ac:500},{type:"android",rules:[{mdmh:"Google/*/Pixel/*"},{ua:"Pixel"}],dpi:[432.6,436.7],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"HTC/*/HTC6435LVW/*"},{ua:"HTC6435LVW"}],dpi:[449.7,443.3],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"HTC/*/HTC One XL/*"},{ua:"HTC One XL"}],dpi:[315.3,314.6],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"htc/*/Nexus 9/*"},{ua:"Nexus 9"}],dpi:289,bw:3,ac:500},{type:"android",rules:[{mdmh:"HTC/*/HTC One M9/*"},{ua:"HTC One M9"}],dpi:[442.5,443.3],bw:3,ac:500},{type:"android",rules:[{mdmh:"HTC/*/HTC One_M8/*"},{ua:"HTC One_M8"}],dpi:[449.7,447.4],bw:3,ac:500},{type:"android",rules:[{mdmh:"HTC/*/HTC One/*"},{ua:"HTC One"}],dpi:472.8,bw:3,ac:1e3},{type:"android",rules:[{mdmh:"Huawei/*/Nexus 6P/*"},{ua:"Nexus 6P"}],dpi:[515.1,518],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"Huawei/*/BLN-L24/*"},{ua:"HONORBLN-L24"}],dpi:480,bw:4,ac:500},{type:"android",rules:[{mdmh:"Huawei/*/BKL-L09/*"},{ua:"BKL-L09"}],dpi:403,bw:3.47,ac:500},{type:"android",rules:[{mdmh:"LENOVO/*/Lenovo PB2-690Y/*"},{ua:"Lenovo PB2-690Y"}],dpi:[457.2,454.713],bw:3,ac:500},{type:"android",rules:[{mdmh:"LGE/*/Nexus 5X/*"},{ua:"Nexus 5X"}],dpi:[422,419.9],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"LGE/*/LGMS345/*"},{ua:"LGMS345"}],dpi:[221.7,219.1],bw:3,ac:500},{type:"android",rules:[{mdmh:"LGE/*/LG-D800/*"},{ua:"LG-D800"}],dpi:[422,424.1],bw:3,ac:500},{type:"android",rules:[{mdmh:"LGE/*/LG-D850/*"},{ua:"LG-D850"}],dpi:[537.9,541.9],bw:3,ac:500},{type:"android",rules:[{mdmh:"LGE/*/VS985 4G/*"},{ua:"VS985 4G"}],dpi:[537.9,535.6],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"LGE/*/Nexus 5/*"},{ua:"Nexus 5 B"}],dpi:[442.4,444.8],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"LGE/*/Nexus 4/*"},{ua:"Nexus 4"}],dpi:[319.8,318.4],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"LGE/*/LG-P769/*"},{ua:"LG-P769"}],dpi:[240.6,247.5],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"LGE/*/LGMS323/*"},{ua:"LGMS323"}],dpi:[206.6,204.6],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"LGE/*/LGLS996/*"},{ua:"LGLS996"}],dpi:[403.4,401.5],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"Micromax/*/4560MMX/*"},{ua:"4560MMX"}],dpi:[240,219.4],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"Micromax/*/A250/*"},{ua:"Micromax A250"}],dpi:[480,446.4],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"Micromax/*/Micromax AQ4501/*"},{ua:"Micromax AQ4501"}],dpi:240,bw:3,ac:500},{type:"android",rules:[{mdmh:"motorola/*/G5/*"},{ua:"Moto G (5) Plus"}],dpi:[403.4,403],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"motorola/*/DROID RAZR/*"},{ua:"DROID RAZR"}],dpi:[368.1,256.7],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"motorola/*/XT830C/*"},{ua:"XT830C"}],dpi:[254,255.9],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"motorola/*/XT1021/*"},{ua:"XT1021"}],dpi:[254,256.7],bw:3,ac:500},{type:"android",rules:[{mdmh:"motorola/*/XT1023/*"},{ua:"XT1023"}],dpi:[254,256.7],bw:3,ac:500},{type:"android",rules:[{mdmh:"motorola/*/XT1028/*"},{ua:"XT1028"}],dpi:[326.6,327.6],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"motorola/*/XT1034/*"},{ua:"XT1034"}],dpi:[326.6,328.4],bw:3,ac:500},{type:"android",rules:[{mdmh:"motorola/*/XT1053/*"},{ua:"XT1053"}],dpi:[315.3,316.1],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"motorola/*/XT1562/*"},{ua:"XT1562"}],dpi:[403.4,402.7],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"motorola/*/Nexus 6/*"},{ua:"Nexus 6 B"}],dpi:[494.3,489.7],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"motorola/*/XT1063/*"},{ua:"XT1063"}],dpi:[295,296.6],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"motorola/*/XT1064/*"},{ua:"XT1064"}],dpi:[295,295.6],bw:3,ac:500},{type:"android",rules:[{mdmh:"motorola/*/XT1092/*"},{ua:"XT1092"}],dpi:[422,424.1],bw:3,ac:500},{type:"android",rules:[{mdmh:"motorola/*/XT1095/*"},{ua:"XT1095"}],dpi:[422,423.4],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"motorola/*/G4/*"},{ua:"Moto G (4)"}],dpi:401,bw:4,ac:1e3},{type:"android",rules:[{mdmh:"OnePlus/*/A0001/*"},{ua:"A0001"}],dpi:[403.4,401],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"OnePlus/*/ONE E1001/*"},{ua:"ONE E1001"}],dpi:[442.4,441.4],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"OnePlus/*/ONE E1003/*"},{ua:"ONE E1003"}],dpi:[442.4,441.4],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"OnePlus/*/ONE E1005/*"},{ua:"ONE E1005"}],dpi:[442.4,441.4],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"OnePlus/*/ONE A2001/*"},{ua:"ONE A2001"}],dpi:[391.9,405.4],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"OnePlus/*/ONE A2003/*"},{ua:"ONE A2003"}],dpi:[391.9,405.4],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"OnePlus/*/ONE A2005/*"},{ua:"ONE A2005"}],dpi:[391.9,405.4],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"OnePlus/*/ONEPLUS A3000/*"},{ua:"ONEPLUS A3000"}],dpi:401,bw:3,ac:500},{type:"android",rules:[{mdmh:"OnePlus/*/ONEPLUS A3003/*"},{ua:"ONEPLUS A3003"}],dpi:401,bw:3,ac:500},{type:"android",rules:[{mdmh:"OnePlus/*/ONEPLUS A3010/*"},{ua:"ONEPLUS A3010"}],dpi:401,bw:3,ac:500},{type:"android",rules:[{mdmh:"OnePlus/*/ONEPLUS A5000/*"},{ua:"ONEPLUS A5000 "}],dpi:[403.411,399.737],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"OnePlus/*/ONE A5010/*"},{ua:"ONEPLUS A5010"}],dpi:[403,400],bw:2,ac:1e3},{type:"android",rules:[{mdmh:"OnePlus/*/ONEPLUS A6000/*"},{ua:"ONEPLUS A6000"}],dpi:401,bw:3,ac:500},{type:"android",rules:[{mdmh:"OnePlus/*/ONEPLUS A6003/*"},{ua:"ONEPLUS A6003"}],dpi:401,bw:3,ac:500},{type:"android",rules:[{mdmh:"OnePlus/*/ONEPLUS A6010/*"},{ua:"ONEPLUS A6010"}],dpi:401,bw:2,ac:500},{type:"android",rules:[{mdmh:"OnePlus/*/ONEPLUS A6013/*"},{ua:"ONEPLUS A6013"}],dpi:401,bw:2,ac:500},{type:"android",rules:[{mdmh:"OPPO/*/X909/*"},{ua:"X909"}],dpi:[442.4,444.1],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/GT-I9082/*"},{ua:"GT-I9082"}],dpi:[184.7,185.4],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/SM-G360P/*"},{ua:"SM-G360P"}],dpi:[196.7,205.4],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/Nexus S/*"},{ua:"Nexus S"}],dpi:[234.5,229.8],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/GT-I9300/*"},{ua:"GT-I9300"}],dpi:[304.8,303.9],bw:5,ac:500},{type:"android",rules:[{mdmh:"samsung/*/SM-T230NU/*"},{ua:"SM-T230NU"}],dpi:216,bw:3,ac:500},{type:"android",rules:[{mdmh:"samsung/*/SGH-T399/*"},{ua:"SGH-T399"}],dpi:[217.7,231.4],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/SGH-M919/*"},{ua:"SGH-M919"}],dpi:[440.8,437.7],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/SM-N9005/*"},{ua:"SM-N9005"}],dpi:[386.4,387],bw:3,ac:500},{type:"android",rules:[{mdmh:"samsung/*/SAMSUNG-SM-N900A/*"},{ua:"SAMSUNG-SM-N900A"}],dpi:[386.4,387.7],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/GT-I9500/*"},{ua:"GT-I9500"}],dpi:[442.5,443.3],bw:3,ac:500},{type:"android",rules:[{mdmh:"samsung/*/GT-I9505/*"},{ua:"GT-I9505"}],dpi:439.4,bw:4,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/SM-G900F/*"},{ua:"SM-G900F"}],dpi:[415.6,431.6],bw:5,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/SM-G900M/*"},{ua:"SM-G900M"}],dpi:[415.6,431.6],bw:5,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/SM-G800F/*"},{ua:"SM-G800F"}],dpi:326.8,bw:3,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/SM-G906S/*"},{ua:"SM-G906S"}],dpi:[562.7,572.4],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/GT-I9300/*"},{ua:"GT-I9300"}],dpi:[306.7,304.8],bw:5,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/SM-T535/*"},{ua:"SM-T535"}],dpi:[142.6,136.4],bw:3,ac:500},{type:"android",rules:[{mdmh:"samsung/*/SM-N920C/*"},{ua:"SM-N920C"}],dpi:[515.1,518.4],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/SM-N920P/*"},{ua:"SM-N920P"}],dpi:[386.3655,390.144],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/SM-N920W8/*"},{ua:"SM-N920W8"}],dpi:[515.1,518.4],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/GT-I9300I/*"},{ua:"GT-I9300I"}],dpi:[304.8,305.8],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/GT-I9195/*"},{ua:"GT-I9195"}],dpi:[249.4,256.7],bw:3,ac:500},{type:"android",rules:[{mdmh:"samsung/*/SPH-L520/*"},{ua:"SPH-L520"}],dpi:[249.4,255.9],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/SAMSUNG-SGH-I717/*"},{ua:"SAMSUNG-SGH-I717"}],dpi:285.8,bw:3,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/SPH-D710/*"},{ua:"SPH-D710"}],dpi:[217.7,204.2],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/GT-N7100/*"},{ua:"GT-N7100"}],dpi:265.1,bw:3,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/SCH-I605/*"},{ua:"SCH-I605"}],dpi:265.1,bw:3,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/Galaxy Nexus/*"},{ua:"Galaxy Nexus"}],dpi:[315.3,314.2],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/SM-N910H/*"},{ua:"SM-N910H"}],dpi:[515.1,518],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/SM-N910C/*"},{ua:"SM-N910C"}],dpi:[515.2,520.2],bw:3,ac:500},{type:"android",rules:[{mdmh:"samsung/*/SM-G130M/*"},{ua:"SM-G130M"}],dpi:[165.9,164.8],bw:3,ac:500},{type:"android",rules:[{mdmh:"samsung/*/SM-G928I/*"},{ua:"SM-G928I"}],dpi:[515.1,518.4],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/SM-G920F/*"},{ua:"SM-G920F"}],dpi:580.6,bw:3,ac:500},{type:"android",rules:[{mdmh:"samsung/*/SM-G920P/*"},{ua:"SM-G920P"}],dpi:[522.5,577],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/SM-G925F/*"},{ua:"SM-G925F"}],dpi:580.6,bw:3,ac:500},{type:"android",rules:[{mdmh:"samsung/*/SM-G925V/*"},{ua:"SM-G925V"}],dpi:[522.5,576.6],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/SM-G930F/*"},{ua:"SM-G930F"}],dpi:576.6,bw:3,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/SM-G935F/*"},{ua:"SM-G935F"}],dpi:533,bw:3,ac:500},{type:"android",rules:[{mdmh:"samsung/*/SM-G950F/*"},{ua:"SM-G950F"}],dpi:[562.707,565.293],bw:3,ac:500},{type:"android",rules:[{mdmh:"samsung/*/SM-G955U/*"},{ua:"SM-G955U"}],dpi:[522.514,525.762],bw:3,ac:500},{type:"android",rules:[{mdmh:"samsung/*/SM-G955F/*"},{ua:"SM-G955F"}],dpi:[522.514,525.762],bw:3,ac:500},{type:"android",rules:[{mdmh:"samsung/*/SM-G960F/*"},{ua:"SM-G960F"}],dpi:[569.575,571.5],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/SM-G9600/*"},{ua:"SM-G9600"}],dpi:[569.575,571.5],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/SM-G960T/*"},{ua:"SM-G960T"}],dpi:[569.575,571.5],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/SM-G960N/*"},{ua:"SM-G960N"}],dpi:[569.575,571.5],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/SM-G960U/*"},{ua:"SM-G960U"}],dpi:[569.575,571.5],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/SM-G9608/*"},{ua:"SM-G9608"}],dpi:[569.575,571.5],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/SM-G960FD/*"},{ua:"SM-G960FD"}],dpi:[569.575,571.5],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/SM-G960W/*"},{ua:"SM-G960W"}],dpi:[569.575,571.5],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/SM-G965F/*"},{ua:"SM-G965F"}],dpi:529,bw:2,ac:1e3},{type:"android",rules:[{mdmh:"Sony/*/C6903/*"},{ua:"C6903"}],dpi:[442.5,443.3],bw:3,ac:500},{type:"android",rules:[{mdmh:"Sony/*/D6653/*"},{ua:"D6653"}],dpi:[428.6,427.6],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"Sony/*/E6653/*"},{ua:"E6653"}],dpi:[428.6,425.7],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"Sony/*/E6853/*"},{ua:"E6853"}],dpi:[403.4,401.9],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"Sony/*/SGP321/*"},{ua:"SGP321"}],dpi:[224.7,224.1],bw:3,ac:500},{type:"android",rules:[{mdmh:"TCT/*/ALCATEL ONE TOUCH Fierce/*"},{ua:"ALCATEL ONE TOUCH Fierce"}],dpi:[240,247.5],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"THL/*/thl 5000/*"},{ua:"thl 5000"}],dpi:[480,443.3],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"Fly/*/IQ4412/*"},{ua:"IQ4412"}],dpi:307.9,bw:3,ac:1e3},{type:"android",rules:[{mdmh:"ZTE/*/ZTE Blade L2/*"},{ua:"ZTE Blade L2"}],dpi:240,bw:3,ac:500},{type:"android",rules:[{mdmh:"BENEVE/*/VR518/*"},{ua:"VR518"}],dpi:480,bw:3,ac:500},{type:"ios",rules:[{res:[640,960]}],dpi:[325.1,328.4],bw:4,ac:1e3},{type:"ios",rules:[{res:[640,1136]}],dpi:[317.1,320.2],bw:3,ac:1e3},{type:"ios",rules:[{res:[750,1334]}],dpi:326.4,bw:4,ac:1e3},{type:"ios",rules:[{res:[1242,2208]}],dpi:[453.6,458.4],bw:4,ac:1e3},{type:"ios",rules:[{res:[1125,2001]}],dpi:[410.9,415.4],bw:4,ac:1e3},{type:"ios",rules:[{res:[1125,2436]}],dpi:458,bw:4,ac:1e3},{type:"android",rules:[{mdmh:"Huawei/*/EML-L29/*"},{ua:"EML-L29"}],dpi:428,bw:3.45,ac:500},{type:"android",rules:[{mdmh:"Nokia/*/Nokia 7.1/*"},{ua:"Nokia 7.1"}],dpi:[432,431.9],bw:3,ac:500},{type:"ios",rules:[{res:[1242,2688]}],dpi:458,bw:4,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/SM-G570M/*"},{ua:"SM-G570M"}],dpi:320,bw:3.684,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/SM-G970F/*"},{ua:"SM-G970F"}],dpi:438,bw:2.281,ac:500},{type:"android",rules:[{mdmh:"samsung/*/SM-G973F/*"},{ua:"SM-G973F"}],dpi:550,bw:2.002,ac:500},{type:"android",rules:[{mdmh:"samsung/*/SM-G975F/*"},{ua:"SM-G975F"}],dpi:522,bw:2.054,ac:500},{type:"android",rules:[{mdmh:"samsung/*/SM-G977F/*"},{ua:"SM-G977F"}],dpi:505,bw:2.334,ac:500},{type:"ios",rules:[{res:[828,1792]}],dpi:326,bw:5,ac:500}],ue={format:1,last_updated:"2019-11-09T17:36:14Z",devices:de};o.prototype.getDeviceParams=function(){return this.deviceParams},o.prototype.recalculateDeviceParams_=function(){var e=this.calcDeviceParams_();e?(this.deviceParams=e,this.onDeviceParamsUpdated&&this.onDeviceParamsUpdated(this.deviceParams)):console.error("Failed to recalculate device parameters.")},o.prototype.calcDeviceParams_=function(){var e=this.dpdb;if(!e)return console.error("DPDB not available."),null;if(1!=e.format)return console.error("DPDB has unexpected format version."),null;if(!e.devices||!e.devices.length)return console.error("DPDB does not have a devices section."),null;var t=navigator.userAgent||navigator.vendor||window.opera,i=P(),r=N();if(!e.devices)return console.error("DPDB has no devices section."),null;for(var n=0;n<e.devices.length;n++){var a=e.devices[n];if(a.rules)if("ios"==a.type||"android"==a.type){if(M()==("ios"==a.type)){for(var s=!1,A=0;A<a.rules.length;A++){var o=a.rules[A];if(this.ruleMatches_(o,t,i,r)){s=!0;break}}if(s){var c=a.dpi[0]||a.dpi,h=a.dpi[1]||a.dpi;return new l({xdpi:c,ydpi:h,bevelMm:a.bw})}}}else console.warn("Device["+n+"] has invalid type.");else console.warn("Device["+n+"] has no rules section.")}return console.warn("No DPDB device match."),null},o.prototype.ruleMatches_=function(e,t,i,r){if(!e.ua&&!e.res)return!1;if(e.ua&&"SM"===e.ua.substring(0,2)&&(e.ua=e.ua.substring(0,7)),e.ua&&t.indexOf(e.ua)<0)return!1;if(e.res){if(!e.res[0]||!e.res[1])return!1;var n=e.res[0],a=e.res[1];if(Math.min(i,r)!=Math.min(n,a)||Math.max(i,r)!=Math.max(n,a))return!1}return!0},c.prototype.set=function(e,t){this.sample=e,this.timestampS=t},c.prototype.copy=function(e){this.set(e.sample,e.timestampS)},h.prototype.addAccelMeasurement=function(e,t){this.currentAccelMeasurement.set(e,t)},h.prototype.addGyroMeasurement=function(e,t){this.currentGyroMeasurement.set(e,t);var i=t-this.previousGyroMeasurement.timestampS;L(i)&&this.run_(),this.previousGyroMeasurement.copy(this.currentGyroMeasurement)},h.prototype.run_=function(){if(!this.isOrientationInitialized)return this.accelQ=this.accelToQuaternion_(this.currentAccelMeasurement.sample),this.previousFilterQ.copy(this.accelQ),void(this.isOrientationInitialized=!0);var e=this.currentGyroMeasurement.timestampS-this.previousGyroMeasurement.timestampS,t=this.gyroToQuaternionDelta_(this.currentGyroMeasurement.sample,e);this.gyroIntegralQ.multiply(t),this.filterQ.copy(this.previousFilterQ),this.filterQ.multiply(t);var i=new oe;i.copy(this.filterQ),i.inverse(),this.estimatedGravity.set(0,0,-1),this.estimatedGravity.applyQuaternion(i),this.estimatedGravity.normalize(),this.measuredGravity.copy(this.currentAccelMeasurement.sample),this.measuredGravity.normalize();var r=new oe;r.setFromUnitVectors(this.estimatedGravity,this.measuredGravity),r.inverse(),this.isDebug&&console.log("Delta: %d deg, G_est: (%s, %s, %s), G_meas: (%s, %s, %s)",se*j(r),this.estimatedGravity.x.toFixed(1),this.estimatedGravity.y.toFixed(1),this.estimatedGravity.z.toFixed(1),this.measuredGravity.x.toFixed(1),this.measuredGravity.y.toFixed(1),this.measuredGravity.z.toFixed(1));var n=new oe;n.copy(this.filterQ),n.multiply(r),this.filterQ.slerp(n,1-this.kFilter),this.previousFilterQ.copy(this.filterQ)},h.prototype.getOrientation=function(){return this.filterQ},h.prototype.accelToQuaternion_=function(e){var t=new Ae;t.copy(e),t.normalize();var i=new oe;return i.setFromUnitVectors(new Ae(0,0,-1),t),i.inverse(),i},h.prototype.gyroToQuaternionDelta_=function(e,t){var i=new oe,r=new Ae;return r.copy(e),r.normalize(),i.setFromAxisAngle(r,e.length()*t),i},d.prototype.getPrediction=function(e,t,i){if(!this.previousTimestampS)return this.previousQ.copy(e),this.previousTimestampS=i,e;var r=new Ae;r.copy(t),r.normalize();var n=t.length();if(n<20*ae)return this.isDebug&&console.log("Moving slowly, at %s deg/s: no prediction",(se*n).toFixed(1)),this.outQ.copy(e),this.previousQ.copy(e),this.outQ;var a=n*this.predictionTimeS;return this.deltaQ.setFromAxisAngle(r,a),this.outQ.copy(this.previousQ),this.outQ.multiply(this.deltaQ),this.previousQ.copy(e),this.previousTimestampS=i,this.outQ},u.prototype.getPosition=function(){return null},u.prototype.getOrientation=function(){var e=void 0;if(this.isWithoutDeviceMotion&&this._deviceOrientationQ){this.deviceOrientationFixQ=this.deviceOrientationFixQ||function(){var e=(new oe).setFromAxisAngle(new Ae(0,0,-1),0),t=new oe;return-90===window.orientation?t.setFromAxisAngle(new Ae(0,1,0),Math.PI/-2):t.setFromAxisAngle(new Ae(0,1,0),Math.PI/2),e.multiply(t)}(),this.deviceOrientationFilterToWorldQ=this.deviceOrientationFilterToWorldQ||function(){var e=new oe;return e.setFromAxisAngle(new Ae(1,0,0),-Math.PI/2),e}(),e=this._deviceOrientationQ;var t=new oe;return t.copy(e),t.multiply(this.deviceOrientationFilterToWorldQ),t.multiply(this.resetQ),t.multiply(this.worldToScreenQ),t.multiplyQuaternions(this.deviceOrientationFixQ,t),this.yawOnly&&(t.x=0,t.z=0,t.normalize()),this.orientationOut_[0]=t.x,this.orientationOut_[1]=t.y,this.orientationOut_[2]=t.z,this.orientationOut_[3]=t.w,this.orientationOut_}var i=this.filter.getOrientation();e=this.posePredictor.getPrediction(i,this.gyroscope,this.previousTimestampS);var t=new oe;return t.copy(this.filterToWorldQ),t.multiply(this.resetQ),t.multiply(e),t.multiply(this.worldToScreenQ),this.yawOnly&&(t.x=0,t.z=0,t.normalize()),this.orientationOut_[0]=t.x,this.orientationOut_[1]=t.y,this.orientationOut_[2]=t.z,this.orientationOut_[3]=t.w,this.orientationOut_},u.prototype.resetPose=function(){this.resetQ.copy(this.filter.getOrientation()),this.resetQ.x=0,this.resetQ.y=0,this.resetQ.z*=-1,this.resetQ.normalize(),x()&&this.resetQ.multiply(this.inverseWorldToScreenQ),this.resetQ.multiply(this.originalPoseAdjustQ)},u.prototype.onDeviceOrientation_=function(e){this._deviceOrientationQ=this._deviceOrientationQ||new oe;var t=e.alpha,i=e.beta,r=e.gamma;t=(t||0)*Math.PI/180,i=(i||0)*Math.PI/180,r=(r||0)*Math.PI/180,this._deviceOrientationQ.setFromEulerYXZ(i,t,-r)},u.prototype.onDeviceMotion_=function(e){this.updateDeviceMotion_(e)},u.prototype.updateDeviceMotion_=function(e){var t=e.accelerationIncludingGravity,i=e.rotationRate,r=e.timeStamp/1e3,n=r-this.previousTimestampS;return n<0?(K("fusion-pose-sensor:invalid:non-monotonic","Invalid timestamps detected: non-monotonic timestamp from devicemotion"),void(this.previousTimestampS=r)):n<=.001||n>1?(K("fusion-pose-sensor:invalid:outside-threshold","Invalid timestamps detected: Timestamp from devicemotion outside expected range."),void(this.previousTimestampS=r)):(this.accelerometer.set(-t.x,-t.y,-t.z),i&&(I()?this.gyroscope.set(-i.beta,i.alpha,i.gamma):this.gyroscope.set(i.alpha,i.beta,i.gamma),this.isDeviceMotionInRadians||this.gyroscope.multiplyScalar(Math.PI/180),this.filter.addGyroMeasurement(this.gyroscope,r)),this.filter.addAccelMeasurement(this.accelerometer,r),void(this.previousTimestampS=r))},u.prototype.onOrientationChange_=function(e){this.setScreenTransform_()},u.prototype.onMessage_=function(e){var t=e.data;if(t&&t.type){"devicemotion"===t.type.toLowerCase()&&this.updateDeviceMotion_(t.deviceMotionEvent)}},u.prototype.setScreenTransform_=function(){switch(this.worldToScreenQ.set(0,0,0,1),window.orientation){case 0:break;case 90:this.worldToScreenQ.setFromAxisAngle(new Ae(0,0,1),-Math.PI/2);break;case-90:this.worldToScreenQ.setFromAxisAngle(new Ae(0,0,1),Math.PI/2)}this.inverseWorldToScreenQ.copy(this.worldToScreenQ),this.inverseWorldToScreenQ.inverse()},u.prototype.start=function(){this.onDeviceMotionCallback_=this.onDeviceMotion_.bind(this),this.onOrientationChangeCallback_=this.onOrientationChange_.bind(this),this.onMessageCallback_=this.onMessage_.bind(this),this.onDeviceOrientationCallback_=this.onDeviceOrientation_.bind(this),M()&&Y()&&window.addEventListener("message",this.onMessageCallback_),window.addEventListener("orientationchange",this.onOrientationChangeCallback_),this.isWithoutDeviceMotion?window.addEventListener("deviceorientation",this.onDeviceOrientationCallback_):window.addEventListener("devicemotion",this.onDeviceMotionCallback_)},u.prototype.stop=function(){window.removeEventListener("devicemotion",this.onDeviceMotionCallback_),window.removeEventListener("deviceorientation",this.onDeviceOrientationCallback_),window.removeEventListener("orientationchange",this.onOrientationChangeCallback_),window.removeEventListener("message",this.onMessageCallback_)};var pe=new Ae(1,0,0),fe=new Ae(0,0,1),me=new oe;me.setFromAxisAngle(pe,-Math.PI/2),me.multiply((new oe).setFromAxisAngle(fe,Math.PI/2));var ge=function(){function e(t){y(this,e),this.config=t,this.sensor=null,this.fusionSensor=null,this._out=new Float32Array(4),this.api=null,this.errors=[],this._sensorQ=new oe,this._outQ=new oe,this._onSensorRead=this._onSensorRead.bind(this),this._onSensorError=this._onSensorError.bind(this),this.init()}return E(e,[{key:"init",value:function(){var e=null;try{e=new RelativeOrientationSensor({frequency:60,referenceFrame:"screen"}),e.addEventListener("error",this._onSensorError)}catch(e){this.errors.push(e),"SecurityError"===e.name?(console.error("Cannot construct sensors due to the Feature Policy"),console.warn('Attempting to fall back using "devicemotion"; however this will fail in the future without correct permissions.'),this.useDeviceMotion()):"ReferenceError"===e.name?this.useDeviceMotion():console.error(e)}e&&(this.api="sensor",this.sensor=e,
this.sensor.addEventListener("reading",this._onSensorRead),this.sensor.start())}},{key:"useDeviceMotion",value:function(){this.api="devicemotion",this.fusionSensor=new u(this.config.K_FILTER,this.config.PREDICTION_TIME_S,this.config.YAW_ONLY,this.config.DEBUG),this.sensor&&(this.sensor.removeEventListener("reading",this._onSensorRead),this.sensor.removeEventListener("error",this._onSensorError),this.sensor=null)}},{key:"getOrientation",value:function(){if(this.fusionSensor)return this.fusionSensor.getOrientation();if(!this.sensor||!this.sensor.quaternion)return this._out[0]=this._out[1]=this._out[2]=0,this._out[3]=1,this._out;var e=this.sensor.quaternion;this._sensorQ.set(e[0],e[1],e[2],e[3]);var t=this._outQ;return t.copy(me),t.multiply(this._sensorQ),this.config.YAW_ONLY&&(t.x=t.z=0,t.normalize()),this._out[0]=t.x,this._out[1]=t.y,this._out[2]=t.z,this._out[3]=t.w,this._out}},{key:"_onSensorError",value:function(e){this.errors.push(e.error),"NotAllowedError"===e.error.name?console.error("Permission to access sensor was denied"):"NotReadableError"===e.error.name?console.error("Sensor could not be read"):console.error(e.error),this.useDeviceMotion()}},{key:"_onSensorRead",value:function(){}}]),e}();p.prototype.show=function(e){e||this.overlay.parentElement?e&&(this.overlay.parentElement&&this.overlay.parentElement!=e&&this.overlay.parentElement.removeChild(this.overlay),e.appendChild(this.overlay)):document.body.appendChild(this.overlay),this.overlay.style.display="block";var t=this.overlay.querySelector("img"),i=t.style;x()?(i.width="20%",i.marginLeft="40%",i.marginTop="3%"):(i.width="50%",i.marginLeft="25%",i.marginTop="25%")},p.prototype.hide=function(){this.overlay.style.display="none"},p.prototype.showTemporarily=function(e,t){this.show(t),this.timer=setTimeout(this.hide.bind(this),e)},p.prototype.disableShowTemporarily=function(){clearTimeout(this.timer)},p.prototype.update=function(){this.disableShowTemporarily(),!x()&&z()?this.show():this.hide()},p.prototype.loadIcon_=function(){this.icon=_("image/svg+xml","<svg width='198' height='240' viewBox='0 0 198 240' xmlns='http://www.w3.org/2000/svg'><g fill='none' fill-rule='evenodd'><path d='M149.625 109.527l6.737 3.891v.886c0 .177.013.36.038.549.01.081.02.162.027.242.14 1.415.974 2.998 2.105 3.999l5.72 5.062.081-.09s4.382-2.53 5.235-3.024l25.97 14.993v54.001c0 .771-.386 1.217-.948 1.217-.233 0-.495-.076-.772-.236l-23.967-13.838-.014.024-27.322 15.775-.85-1.323c-4.731-1.529-9.748-2.74-14.951-3.61a.27.27 0 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function(){if(r.fullscreenElement_){var e=["position: absolute","top: 0","left: 0","width: "+Math.max(screen.width,screen.height)+"px","height: "+Math.min(screen.height,screen.width)+"px","border: 0","margin: 0","padding: 0"];r.fullscreenElement_.setAttribute("style",e.join("; ")+";")}}(),this.fullscreenWrapper_},v.prototype.removeFullscreenWrapper=function(){if(this.fullscreenElement_){var e=this.fullscreenElement_;this.fullscreenElementCachedStyle_?e.setAttribute("style",this.fullscreenElementCachedStyle_):e.removeAttribute("style"),this.fullscreenElement_=null,this.fullscreenElementCachedStyle_=null;var t=this.fullscreenWrapper_.parentElement;return this.fullscreenWrapper_.removeChild(e),this.originalParent_===t?t.insertBefore(e,this.fullscreenWrapper_):this.originalParent_&&this.originalParent_.appendChild(e),t.removeChild(this.fullscreenWrapper_),e}},v.prototype.requestPresent=function(e){var t=this.isPresenting,i=this;return e instanceof Array||(J("VRDisplay.prototype.requestPresent with non-array argument","an array of VRLayers as the first argument"),e=[e]),new Promise(function(r,n){if(!i.capabilities.canPresent)return void n(new Error("VRDisplay is not capable of presenting."));if(0==e.length||e.length>i.capabilities.maxLayers)return void n(new Error("Invalid number of layers."));var a=e[0];if(!a.source)return void r();var s=a.leftBounds||_e,A=a.rightBounds||De;if(t){var o=i.layer_;o.source!==a.source&&(o.source=a.source);for(var l=0;l<4;l++)o.leftBounds[l]=s[l],o.rightBounds[l]=A[l];return i.wrapForFullscreen(i.layer_.source),i.updatePresent_(),void r()}if(i.layer_={predistorted:a.predistorted,source:a.source,leftBounds:s.slice(0),rightBounds:A.slice(0)},i.waitingForPresent_=!1,i.layer_&&i.layer_.source){var c=i.wrapForFullscreen(i.layer_.source),h=function(){var e=Q();i.isPresenting=c===e,i.isPresenting?(screen.orientation&&screen.orientation.lock&&screen.orientation.lock("landscape-primary").catch(function(e){console.error("screen.orientation.lock() failed due to",e.message)}),i.waitingForPresent_=!1,i.beginPresent_(),r()):(screen.orientation&&screen.orientation.unlock&&screen.orientation.unlock(),i.removeFullscreenWrapper(),i.disableWakeLock(),i.endPresent_(),i.removeFullscreenListeners_()),i.fireVRDisplayPresentChange_()},d=function(){i.waitingForPresent_&&(i.removeFullscreenWrapper(),i.removeFullscreenListeners_(),i.disableWakeLock(),i.waitingForPresent_=!1,i.isPresenting=!1,n(new Error("Unable to present.")))};i.addFullscreenListeners_(c,h,d),G(c)?(i.enableWakeLock(),i.waitingForPresent_=!0):(M()||F())&&(i.enableWakeLock(),i.isPresenting=!0,i.beginPresent_(),i.fireVRDisplayPresentChange_(),r())}i.waitingForPresent_||M()||(O(),n(new Error("Unable to present.")))})},v.prototype.exitPresent=function(){var e=this.isPresenting,t=this;return this.isPresenting=!1,this.layer_=null,this.disableWakeLock(),new Promise(function(i,r){e?(!O()&&M()&&(t.endPresent_(),t.fireVRDisplayPresentChange_()),F()&&(t.removeFullscreenWrapper(),t.removeFullscreenListeners_(),t.endPresent_(),t.fireVRDisplayPresentChange_()),i()):r(new Error("Was not presenting to VRDisplay."))})},v.prototype.getLayers=function(){return this.layer_?[this.layer_]:[]},v.prototype.fireVRDisplayPresentChange_=function(){var e=new CustomEvent("vrdisplaypresentchange",{detail:{display:this}});window.dispatchEvent(e)},v.prototype.fireVRDisplayConnect_=function(){var e=new CustomEvent("vrdisplayconnect",{detail:{display:this}});window.dispatchEvent(e)},v.prototype.addFullscreenListeners_=function(e,t,i){this.removeFullscreenListeners_(),this.fullscreenEventTarget_=e,this.fullscreenChangeHandler_=t,this.fullscreenErrorHandler_=i,t&&(document.fullscreenEnabled?e.addEventListener("fullscreenchange",t,!1):document.webkitFullscreenEnabled?e.addEventListener("webkitfullscreenchange",t,!1):document.mozFullScreenEnabled?document.addEventListener("mozfullscreenchange",t,!1):document.msFullscreenEnabled&&e.addEventListener("msfullscreenchange",t,!1)),i&&(document.fullscreenEnabled?e.addEventListener("fullscreenerror",i,!1):document.webkitFullscreenEnabled?e.addEventListener("webkitfullscreenerror",i,!1):document.mozFullScreenEnabled?document.addEventListener("mozfullscreenerror",i,!1):document.msFullscreenEnabled&&e.addEventListener("msfullscreenerror",i,!1))},v.prototype.removeFullscreenListeners_=function(){if(this.fullscreenEventTarget_){var e=this.fullscreenEventTarget_;if(this.fullscreenChangeHandler_){var t=this.fullscreenChangeHandler_;e.removeEventListener("fullscreenchange",t,!1),e.removeEventListener("webkitfullscreenchange",t,!1),document.removeEventListener("mozfullscreenchange",t,!1),e.removeEventListener("msfullscreenchange",t,!1)}if(this.fullscreenErrorHandler_){var i=this.fullscreenErrorHandler_;e.removeEventListener("fullscreenerror",i,!1),e.removeEventListener("webkitfullscreenerror",i,!1),document.removeEventListener("mozfullscreenerror",i,!1),e.removeEventListener("msfullscreenerror",i,!1)}this.fullscreenEventTarget_=null,this.fullscreenChangeHandler_=null,this.fullscreenErrorHandler_=null}},v.prototype.enableWakeLock=function(){this.wakelock_&&this.wakelock_.enable()},v.prototype.disableWakeLock=function(){this.wakelock_&&this.wakelock_.disable()},v.prototype.beginPresent_=function(){},v.prototype.endPresent_=function(){},v.prototype.submitFrame=function(e){},v.prototype.getEyeParameters=function(e){return null};var Te={ADDITIONAL_VIEWERS:[],DEFAULT_VIEWER:"",MOBILE_WAKE_LOCK:!0,DEBUG:!1,DPDB_URL:"https://dpdb.webvr.rocks/dpdb.json",K_FILTER:.98,PREDICTION_TIME_S:.04,CARDBOARD_UI_DISABLED:!1,ROTATE_INSTRUCTIONS_DISABLED:!1,YAW_ONLY:!1,BUFFER_SCALE:.5,DIRTY_SUBMIT_FRAME_BINDINGS:!1},Be={LEFT:"left",RIGHT:"right"};return w.prototype=Object.create(v.prototype),w.prototype._getPose=function(){return{position:null,orientation:this.poseSensor_.getOrientation(),linearVelocity:null,linearAcceleration:null,angularVelocity:null,angularAcceleration:null}},w.prototype._resetPose=function(){this.poseSensor_.resetPose&&this.poseSensor_.resetPose()},w.prototype._getFieldOfView=function(e){var t;if(e==Be.LEFT)t=this.deviceInfo_.getFieldOfViewLeftEye();else{if(e!=Be.RIGHT)return console.error("Invalid eye provided: %s",e),null;t=this.deviceInfo_.getFieldOfViewRightEye()}return t},w.prototype._getEyeOffset=function(e){var t;if(e==Be.LEFT)t=[.5*-this.deviceInfo_.viewer.interLensDistance,0,0];else{if(e!=Be.RIGHT)return console.error("Invalid eye provided: %s",e),null;t=[.5*this.deviceInfo_.viewer.interLensDistance,0,0]}return t},w.prototype.getEyeParameters=function(e){var t=this._getEyeOffset(e),i=this._getFieldOfView(e),r={offset:t,renderWidth:.5*this.deviceInfo_.device.width*this.bufferScale_,renderHeight:this.deviceInfo_.device.height*this.bufferScale_};return Object.defineProperty(r,"fieldOfView",{enumerable:!0,get:function(){return J("VRFieldOfView","VRFrameData's projection matrices"),i}}),r},w.prototype.onDeviceParamsUpdated_=function(e){this.config.DEBUG&&console.log("DPDB reported that device params were updated."),this.deviceInfo_.updateDeviceParams(e),this.distorter_&&this.distorter_.updateDeviceInfo(this.deviceInfo_)},w.prototype.updateBounds_=function(){this.layer_&&this.distorter_&&(this.layer_.leftBounds||this.layer_.rightBounds)&&this.distorter_.setTextureBounds(this.layer_.leftBounds,this.layer_.rightBounds)},w.prototype.beginPresent_=function(){var e=this.layer_.source.getContext("webgl");e||(e=this.layer_.source.getContext("experimental-webgl")),e||(e=this.layer_.source.getContext("webgl2")),e&&(this.layer_.predistorted?this.config.CARDBOARD_UI_DISABLED||(e.canvas.width=P()*this.bufferScale_,e.canvas.height=N()*this.bufferScale_,this.cardboardUI_=new r(e)):(this.config.CARDBOARD_UI_DISABLED||(this.cardboardUI_=new r(e)),this.distorter_=new i(e,this.cardboardUI_,this.config.BUFFER_SCALE,this.config.DIRTY_SUBMIT_FRAME_BINDINGS),this.distorter_.updateDeviceInfo(this.deviceInfo_)),this.cardboardUI_&&this.cardboardUI_.listen(function(e){this.viewerSelector_.show(this.layer_.source.parentElement),e.stopPropagation(),e.preventDefault()}.bind(this),function(e){this.exitPresent(),e.stopPropagation(),e.preventDefault()}.bind(this)),this.rotateInstructions_&&(x()&&z()?this.rotateInstructions_.showTemporarily(3e3,this.layer_.source.parentElement):this.rotateInstructions_.update()),this.orientationHandler=this.onOrientationChange_.bind(this),window.addEventListener("orientationchange",this.orientationHandler),this.vrdisplaypresentchangeHandler=this.updateBounds_.bind(this),window.addEventListener("vrdisplaypresentchange",this.vrdisplaypresentchangeHandler),this.fireVRDisplayDeviceParamsChange_())},w.prototype.endPresent_=function(){this.distorter_&&(this.distorter_.destroy(),this.distorter_=null),this.cardboardUI_&&(this.cardboardUI_.destroy(),this.cardboardUI_=null),this.rotateInstructions_&&this.rotateInstructions_.hide(),this.viewerSelector_.hide(),window.removeEventListener("orientationchange",this.orientationHandler),window.removeEventListener("vrdisplaypresentchange",this.vrdisplaypresentchangeHandler)},w.prototype.updatePresent_=function(){this.endPresent_(),this.beginPresent_()},w.prototype.submitFrame=function(e){if(this.distorter_)this.updateBounds_(),this.distorter_.submitFrame();else if(this.cardboardUI_&&this.layer_){var t=this.layer_.source.getContext("webgl");t||(t=this.layer_.source.getContext("experimental-webgl")),t||(t=this.layer_.source.getContext("webgl2"));var i=t.canvas;i.width==this.lastWidth&&i.height==this.lastHeight||this.cardboardUI_.onResize(),this.lastWidth=i.width,this.lastHeight=i.height,this.cardboardUI_.render()}},w.prototype.onOrientationChange_=function(e){this.viewerSelector_.hide(),this.rotateInstructions_&&this.rotateInstructions_.update(),this.onResize_()},w.prototype.onResize_=function(e){if(this.layer_){var t=this.layer_.source.getContext("webgl");t||(t=this.layer_.source.getContext("experimental-webgl")),t||(t=this.layer_.source.getContext("webgl2"));var i=["position: absolute","top: 0","left: 0","width: 100vw","height: 100vh","border: 0","margin: 0","padding: 0px","box-sizing: content-box"];t.canvas.setAttribute("style",i.join("; ")+";"),W(t.canvas)}},w.prototype.onViewerChanged_=function(e){this.deviceInfo_.setViewer(e),this.distorter_&&this.distorter_.updateDeviceInfo(this.deviceInfo_),this.fireVRDisplayDeviceParamsChange_()},w.prototype.fireVRDisplayDeviceParamsChange_=function(){var e=new CustomEvent("vrdisplaydeviceparamschange",{detail:{vrdisplay:this,deviceInfo:this.deviceInfo_}});window.dispatchEvent(e)},w.VRFrameData=m,w.VRDisplay=v,w}()}()}),s=function(e){return e&&e.__esModule&&Object.prototype.hasOwnProperty.call(e,"default")?e.default:e}(a),A={ADDITIONAL_VIEWERS:[],DEFAULT_VIEWER:"",PROVIDE_MOBILE_VRDISPLAY:!0,MOBILE_WAKE_LOCK:!0,DEBUG:!1,DPDB_URL:"https://dpdb.webvr.rocks/dpdb.json",K_FILTER:.98,PREDICTION_TIME_S:.04,CARDBOARD_UI_DISABLED:!1,ROTATE_INSTRUCTIONS_DISABLED:!1,YAW_ONLY:!1,BUFFER_SCALE:.5,DIRTY_SUBMIT_FRAME_BINDINGS:!1};e.prototype.getPolyfillDisplays=function(){if(this._polyfillDisplaysPopulated)return this.polyfillDisplays;if(i()){var e=new s({ADDITIONAL_VIEWERS:this.config.ADDITIONAL_VIEWERS,DEFAULT_VIEWER:this.config.DEFAULT_VIEWER,MOBILE_WAKE_LOCK:this.config.MOBILE_WAKE_LOCK,DEBUG:this.config.DEBUG,DPDB_URL:this.config.DPDB_URL,CARDBOARD_UI_DISABLED:this.config.CARDBOARD_UI_DISABLED,K_FILTER:this.config.K_FILTER,PREDICTION_TIME_S:this.config.PREDICTION_TIME_S,ROTATE_INSTRUCTIONS_DISABLED:this.config.ROTATE_INSTRUCTIONS_DISABLED,YAW_ONLY:this.config.YAW_ONLY,BUFFER_SCALE:this.config.BUFFER_SCALE,DIRTY_SUBMIT_FRAME_BINDINGS:this.config.DIRTY_SUBMIT_FRAME_BINDINGS});this.polyfillDisplays.push(e)}return this._polyfillDisplaysPopulated=!0,this.polyfillDisplays},e.prototype.enable=function(){if(this.enabled=!0,this.hasNative&&this.native.VRFrameData){var e=this.native.VRFrameData,t=new this.native.VRFrameData,i=this.native.VRDisplay.prototype.getFrameData;window.VRDisplay.prototype.getFrameData=function(n){if(n instanceof e)return void i.call(this,n);i.call(this,t),n.pose=t.pose,r(t.leftProjectionMatrix,n.leftProjectionMatrix),r(t.rightProjectionMatrix,n.rightProjectionMatrix),r(t.leftViewMatrix,n.leftViewMatrix),r(t.rightViewMatrix,n.rightViewMatrix)}}navigator.getVRDisplays=this.getVRDisplays.bind(this),window.VRDisplay=s.VRDisplay,window.VRFrameData=s.VRFrameData},e.prototype.getVRDisplays=function(){var e=this;this.config;return this.hasNative?this.native.getVRDisplays.call(navigator).then(function(t){return t.length>0?t:e.getPolyfillDisplays()}):Promise.resolve(this.getPolyfillDisplays())},e.version="0.10.12",e.VRFrameData=s.VRFrameData,e.VRDisplay=s.VRDisplay;var o=Object.freeze({default:e}),l=o&&e||o;return void 0!==t&&t.window&&(t.document||(t.document=t.window.document),t.navigator||(t.navigator=t.window.navigator)),l});
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})

},{}],70:[function(require,module,exports){
function idxOf(e,n,r,t){var i=e.indexOf(n,r);return-1===i||i>t?t:i}function isWhitespace(e){return whitespace.test(e)}function pre(e,n,r,t,i){for(var a=[],o=r,s=r;s<t&&s<n.length;s++){var h=n.charAt(s),u=newline.test(h);if(u||s===t-1){var f=u?s:s+1,p=e(n,o,f,i);a.push(p),o=s+1}}return a}function greedy(e,n,r,t,i,a){var o=[],s=i;for("nowrap"===a&&(s=Number.MAX_VALUE);r<t&&r<n.length;){for(var h=idxOf(n,newlineChar,r,t);r<h&&isWhitespace(n.charAt(r));)r++;var u=e(n,r,h,s),f=r+(u.end-u.start),p=f+newlineChar.length;if(f<h){for(;f>r&&!isWhitespace(n.charAt(f));)f--;if(f===r)p>r+newlineChar.length&&p--,f=p;else for(p=f;f>r&&isWhitespace(n.charAt(f-newlineChar.length));)f--}if(f>=r){var c=e(n,r,f,s);o.push(c)}r=p}return o}function monospace(e,n,r,t){return{start:n,end:n+Math.min(t,r-n)}}var newline=/\n/,newlineChar="\n",whitespace=/\s/;module.exports=function(e,n){return module.exports.lines(e,n).map(function(n){return e.substring(n.start,n.end)}).join("\n")},module.exports.lines=function(e,n){if(n=n||{},0===n.width&&"nowrap"!==n.mode)return[];e=e||"";var r="number"==typeof n.width?n.width:Number.MAX_VALUE,t=Math.max(0,n.start||0),i="number"==typeof n.end?n.end:e.length,a=n.mode,o=n.measure||monospace;return"pre"===a?pre(o,e,t,i,r):greedy(o,e,t,i,r,a)};
},{}],71:[function(require,module,exports){
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},{"global/window":27,"is-function":33,"parse-headers":47,"xtend":73}],72:[function(require,module,exports){
module.exports=function(){return void 0!==self.DOMParser?function(e){return(new self.DOMParser).parseFromString(e,"application/xml")}:void 0!==self.ActiveXObject&&new self.ActiveXObject("Microsoft.XMLDOM")?function(e){var n=new self.ActiveXObject("Microsoft.XMLDOM");return n.async="false",n.loadXML(e),n}:function(e){var n=document.createElement("div");return n.innerHTML=e,n}}();
},{}],73:[function(require,module,exports){
function extend(){for(var r={},e=0;e<arguments.length;e++){var t=arguments[e];for(var n in t)hasOwnProperty.call(t,n)&&(r[n]=t[n])}return r}module.exports=extend;var hasOwnProperty=Object.prototype.hasOwnProperty;
},{}],74:[function(require,module,exports){
module.exports={"name":"aframe","version":"1.2.0","description":"A web framework for building virtual reality experiences.","homepage":"https://aframe.io/","main":"dist/aframe-master.js","scripts":{"browserify":"browserify src/index.js -s 'AFRAME' -p browserify-derequire","build":"shx mkdir -p build/ && npm run browserify -- --debug -t [ envify --INSPECTOR_VERSION dev ] -o build/aframe.js","codecov":"codecov","dev":"npm run build && cross-env INSPECTOR_VERSION=dev node ./scripts/budo -t envify","dist":"node scripts/updateVersionLog.js && npm run dist:min && npm run dist:max","dist:max":"npm run browserify -s -- --debug | exorcist dist/aframe-master.js.map > dist/aframe-master.js","dist:min":"npm run browserify -s -- --debug -p [ minifyify --map aframe-master.min.js.map --output dist/aframe-master.min.js.map ] -o dist/aframe-master.min.js","docs":"markserv --dir docs --port 9001","preghpages":"node ./scripts/preghpages.js","ghpages":"ghpages -p gh-pages/","lint":"semistandard -v | snazzy","lint:fix":"semistandard --fix","precommit":"npm run lint","prepush":"node scripts/testOnlyCheck.js","prerelease":"node scripts/release.js 1.1.0 1.2.0","start":"npm run dev","start:https":"cross-env SSL=true npm run dev","test":"karma start ./tests/karma.conf.js","test:docs":"node scripts/docsLint.js","test:firefox":"npm test -- --browsers Firefox","test:chrome":"npm test -- --browsers Chrome","test:nobrowser":"NO_BROWSER=true npm test","test:node":"mocha --ui tdd tests/node"},"repository":"aframevr/aframe","license":"MIT","files":["dist/*","docs/**/*","src/**/*","vendor/**/*"],"dependencies":{"custom-event-polyfill":"^1.0.6","debug":"ngokevin/debug#noTimestamp","deep-assign":"^2.0.0","document-register-element":"dmarcos/document-register-element#8ccc532b7f3744be954574caf3072a5fd260ca90","load-bmfont":"^1.2.3","object-assign":"^4.0.1","present":"0.0.6","promise-polyfill":"^3.1.0","super-animejs":"^3.1.0","super-three":"^0.133.5","three-bmfont-text":"dmarcos/three-bmfont-text#21d017046216e318362c48abd1a48bddfb6e0733","webvr-polyfill":"^0.10.12"},"devDependencies":{"browserify":"^13.1.0","browserify-css":"^0.8.4","browserify-derequire":"^0.9.4","browserify-istanbul":"^2.0.0","budo":"^9.2.0","chai":"^3.5.0","chai-shallow-deep-equal":"^1.4.0","chalk":"^1.1.3","codecov":"^1.0.1","cross-env":"^5.0.1","envify":"^3.4.1","exorcist":"^0.4.0","ghpages":"0.0.8","git-rev":"^0.2.1","glob":"^7.1.1","husky":"^0.11.7","istanbul":"^0.4.5","jsdom":"^9.11.0","karma":"1.4.1","karma-browserify":"^5.1.0","karma-chai-shallow-deep-equal":"0.0.4","karma-chrome-launcher":"^2.0.0","karma-coverage":"^1.1.1","karma-env-preprocessor":"^0.1.1","karma-firefox-launcher":"^1.2.0","karma-mocha":"^1.1.1","karma-mocha-reporter":"^2.1.0","karma-sinon-chai":"1.2.4","lolex":"^1.5.1","markserv":"github:sukima/markserv#feature/fix-broken-websoketio-link","minifyify":"^7.3.3","mocha":"^3.0.2","mozilla-download":"^1.1.1","replace-in-file":"^2.5.3","semistandard":"^9.0.0","shelljs":"^0.7.7","shx":"^0.2.2","sinon":"^1.17.5","sinon-chai":"2.8.0","snazzy":"^5.0.0","too-wordy":"ngokevin/too-wordy","uglifyjs":"^2.4.10","write-good":"^0.9.1"},"link":true,"browserify":{"transform":["browserify-css","envify"]},"semistandard":{"ignore":["build/**","dist/**","examples/**/shaders/*.js","**/vendor/**"]},"keywords":["3d","aframe","cardboard","components","oculus","three","three.js","rift","vive","vr","web-components","webvr"],"browserify-css":{"minify":true},"engines":{"node":">= 4.6.0","npm":"^2.15.9"}}
},{}],75:[function(require,module,exports){
function getPropertyType(t,e){var i,n,o,a;return o=e.split("."),n=o[0],a=o[1],i=t.components[n]||components[n],i?a&&!i.schema[a]?null:a?i.schema[a].type:i.schema.type:null}function toRadians(t){t.x=THREE.Math.degToRad(t.x),t.y=THREE.Math.degToRad(t.y),t.z=THREE.Math.degToRad(t.z)}function addEventListeners(t,e,i){var n;for(n=0;n<e.length;n++)t.addEventListener(e[n],i)}function removeEventListeners(t,e,i){var n;for(n=0;n<e.length;n++)t.removeEventListener(e[n],i)}function getRawProperty(t,e){var i,n,o;for(n=splitDot(e),o=t,i=0;i<n.length;i++)o=o[n[i]];if(void 0===o)throw console.log(t),new Error("[animation] property ("+e+") could not be found");return o}function setRawProperty(t,e,i,n){var o,a,r,s;for(e.startsWith("object3D.rotation")&&(i=THREE.Math.degToRad(i)),a=splitDot(e),s=t,o=0;o<a.length-1;o++)s=s[a[o]];if(r=a[a.length-1],n===TYPE_COLOR)return void("r"in s[r]?(s[r].r=i.r,s[r].g=i.g,s[r].b=i.b):(s[r].x=i.r,s[r].y=i.g,s[r].z=i.b));s[r]=i}function splitDot(t){return t in splitCache?splitCache[t]:(splitCache[t]=t.split("."),splitCache[t])}function isRawProperty(t){return t.isRawProperty||t.property.startsWith(STRING_COMPONENTS)||t.property.startsWith(STRING_OBJECT3D)}var anime=require("super-animejs"),components=require("../core/component").components,registerComponent=require("../core/component").registerComponent,THREE=require("../lib/three"),utils=require("../utils"),colorHelperFrom=new THREE.Color,colorHelperTo=new THREE.Color,getComponentProperty=utils.entity.getComponentProperty,setComponentProperty=utils.entity.setComponentProperty,splitCache={},TYPE_COLOR="color",PROP_POSITION="position",PROP_ROTATION="rotation",PROP_SCALE="scale",STRING_COMPONENTS="components",STRING_OBJECT3D="object3D";module.exports.Component=registerComponent("animation",{schema:{autoplay:{default:!0},delay:{default:0},dir:{default:""},dur:{default:1e3},easing:{default:"easeInQuad"},elasticity:{default:400},enabled:{default:!0},from:{default:""},loop:{default:0,parse:function(t){return!0===t||"true"===t||!1!==t&&"false"!==t&&parseInt(t,10)}},property:{default:""},startEvents:{type:"array"},pauseEvents:{type:"array"},resumeEvents:{type:"array"},round:{default:!1},to:{default:""},type:{default:""},isRawProperty:{default:!1}},multiple:!0,init:function(){var t=this;this.eventDetail={name:this.attrName},this.time=0,this.animation=null,this.animationIsPlaying=!1,this.onStartEvent=this.onStartEvent.bind(this),this.beginAnimation=this.beginAnimation.bind(this),this.pauseAnimation=this.pauseAnimation.bind(this),this.resumeAnimation=this.resumeAnimation.bind(this),this.fromColor={},this.toColor={},this.targets={},this.targetsArray=[],this.updateConfigForDefault=this.updateConfigForDefault.bind(this),this.updateConfigForRawColor=this.updateConfigForRawColor.bind(this),this.config={complete:function(){t.animationIsPlaying=!1,t.el.emit("animationcomplete",t.eventDetail,!1),t.id&&t.el.emit("animationcomplete__"+t.id,t.eventDetail,!1)}}},update:function(t){var e=this.config,i=this.data;this.animationIsPlaying=!1,this.data.enabled&&i.property&&(e.autoplay=!1,e.direction=i.dir,e.duration=i.dur,e.easing=i.easing,e.elasticity=i.elasticity,e.loop=i.loop,e.round=i.round,this.createAndStartAnimation())},tick:function(t,e){this.animationIsPlaying&&(this.time+=e,this.animation.tick(this.time))},remove:function(){this.pauseAnimation(),this.removeEventListeners()},pause:function(){this.paused=!0,this.pausedWasPlaying=this.animationIsPlaying,this.pauseAnimation(),this.removeEventListeners()},play:function(){this.paused&&(this.paused=!1,this.addEventListeners(),this.pausedWasPlaying&&(this.resumeAnimation(),this.pausedWasPlaying=!1))},createAndStartAnimation:function(){var t=this.data;if(this.updateConfig(),this.animationIsPlaying=!1,this.animation=anime(this.config),this.animation.began=!0,this.removeEventListeners(),this.addEventListeners(),!(!t.autoplay||t.startEvents&&t.startEvents.length))return t.delay?void setTimeout(this.beginAnimation,t.delay):void this.beginAnimation()},beginAnimation:function(){this.updateConfig(),this.animation.began=!0,this.time=0,this.animationIsPlaying=!0,this.stopRelatedAnimations(),this.el.emit("animationbegin",this.eventDetail,!1)},pauseAnimation:function(){this.animationIsPlaying=!1},resumeAnimation:function(){this.animationIsPlaying=!0},onStartEvent:function(){if(this.data.enabled){if(this.updateConfig(),this.animation&&this.animation.pause(),this.animation=anime(this.config),this.data.delay)return void setTimeout(this.beginAnimation,this.data.delay);this.beginAnimation()}},updateConfigForRawColor:function(){var t,e,i,n=this.config,o=this.data,a=this.el;if(!this.waitComponentInitRawProperty(this.updateConfigForRawColor)){t=""===o.from?getRawProperty(a,o.property):o.from,i=o.to,this.setColorConfig(t,i),t=this.fromColor,i=this.toColor,this.targetsArray.length=0,this.targetsArray.push(t),n.targets=this.targetsArray;for(e in i)n[e]=i[e];n.update=function(){var t={};return function(e){var i;i=e.animatables[0].target,i.r===t.r&&i.g===t.g&&i.b===t.b||setRawProperty(a,o.property,i,o.type)}}()}},updateConfigForDefault:function(){var t,e,i,n,o=this.config,a=this.data,r=this.el;this.waitComponentInitRawProperty(this.updateConfigForDefault)||(t=""===a.from?isRawProperty(a)?getRawProperty(r,a.property):getComponentProperty(r,a.property):a.from,n=a.to,i=!isNaN(t||n),i?(t=parseFloat(t),n=parseFloat(n)):(t=t?t.toString():t,n=n?n.toString():n),e="true"===a.to||"false"===a.to||!0===a.to||!1===a.to,e&&(t="true"===a.from||!0===a.from?1:0,n="true"===a.to||!0===a.to?1:0),this.targets.aframeProperty=t,o.targets=this.targets,o.aframeProperty=n,o.update=function(){var t;return function(i){var n;(n=i.animatables[0].target.aframeProperty)!==t&&(t=n,e&&(n=n>=1),isRawProperty(a)?setRawProperty(r,a.property,n,a.type):setComponentProperty(r,a.property,n))}}())},updateConfigForVector:function(){var t,e,i,n=this.config,o=this.data,a=this.el;e=""!==o.from?utils.coordinates.parse(o.from):getComponentProperty(a,o.property),i=utils.coordinates.parse(o.to),o.property===PROP_ROTATION&&(toRadians(e),toRadians(i)),this.targetsArray.length=0,this.targetsArray.push(e),n.targets=this.targetsArray;for(t in i)n[t]=i[t];if(o.property===PROP_POSITION||o.property===PROP_ROTATION||o.property===PROP_SCALE)return void(n.update=function(){var t={};return function(e){var i=e.animatables[0].target;o.property===PROP_SCALE&&(i.x=Math.max(1e-4,i.x),i.y=Math.max(1e-4,i.y),i.z=Math.max(1e-4,i.z)),i.x===t.x&&i.y===t.y&&i.z===t.z||(t.x=i.x,t.y=i.y,t.z=i.z,a.object3D[o.property].set(i.x,i.y,i.z))}}());n.update=function(){var t={};return function(e){var i=e.animatables[0].target;i.x===t.x&&i.y===t.y&&i.z===t.z||(t.x=i.x,t.y=i.y,t.z=i.z,setComponentProperty(a,o.property,i))}}()},updateConfig:function(){var t;t=getPropertyType(this.el,this.data.property),isRawProperty(this.data)&&this.data.type===TYPE_COLOR?this.updateConfigForRawColor():"vec2"===t||"vec3"===t||"vec4"===t?this.updateConfigForVector():this.updateConfigForDefault()},waitComponentInitRawProperty:function(t){var e,i=this.data,n=this.el,o=this;return""===i.from&&(!!i.property.startsWith(STRING_COMPONENTS)&&(e=splitDot(i.property)[1],!n.components[e]&&(n.addEventListener("componentinitialized",function i(a){a.detail.name===e&&(t(),o.animation=anime(o.config),n.removeEventListener("componentinitialized",i))}),!0)))},stopRelatedAnimations:function(){var t,e;for(e in this.el.components)t=this.el.components[e],e!==this.attrName&&"animation"===t.name&&t.animationIsPlaying&&t.data.property===this.data.property&&(t.animationIsPlaying=!1)},addEventListeners:function(){var t=this.data,e=this.el;addEventListeners(e,t.startEvents,this.onStartEvent),addEventListeners(e,t.pauseEvents,this.pauseAnimation),addEventListeners(e,t.resumeEvents,this.resumeAnimation)},removeEventListeners:function(){var t=this.data,e=this.el;removeEventListeners(e,t.startEvents,this.onStartEvent),removeEventListeners(e,t.pauseEvents,this.pauseAnimation),removeEventListeners(e,t.resumeEvents,this.resumeAnimation)},setColorConfig:function(t,e){colorHelperFrom.set(t),colorHelperTo.set(e),t=this.fromColor,e=this.toColor,t.r=colorHelperFrom.r,t.g=colorHelperFrom.g,t.b=colorHelperFrom.b,e.r=colorHelperTo.r,e.g=colorHelperTo.g,e.b=colorHelperTo.b}});
},{"../core/component":135,"../lib/three":183,"../utils":210,"super-animejs":56}],76:[function(require,module,exports){
var registerComponent=require("../core/component").registerComponent,THREE=require("../lib/three");module.exports.Component=registerComponent("camera",{schema:{active:{default:!0},far:{default:1e4},fov:{default:80,min:0},near:{default:.005,min:0},spectator:{default:!1},zoom:{default:1,min:0}},init:function(){var e,t=this.el;e=this.camera=new THREE.PerspectiveCamera,t.setObject3D("camera",e)},update:function(e){var t=this.data,a=this.camera;a.aspect=t.aspect||window.innerWidth/window.innerHeight,a.far=t.far,a.fov=t.fov,a.near=t.near,a.zoom=t.zoom,a.updateProjectionMatrix(),this.updateActiveCamera(e),this.updateSpectatorCamera(e)},updateActiveCamera:function(e){var t=this.data,a=this.el,r=this.system;e&&e.active===t.active||t.spectator||(t.active&&r.activeCameraEl!==a?r.setActiveCamera(a):t.active||r.activeCameraEl!==a||r.disableActiveCamera())},updateSpectatorCamera:function(e){var t=this.data,a=this.el,r=this.system;e&&e.spectator===t.spectator||(t.spectator&&r.spectatorCameraEl!==a?r.setSpectatorCamera(a):t.spectator||r.spectatorCameraEl!==a||r.disableSpectatorCamera())},remove:function(){this.el.removeObject3D("camera")}});
},{"../core/component":135,"../lib/three":183}],77:[function(require,module,exports){
var registerComponent=require("../core/component").registerComponent,utils=require("../utils/"),bind=utils.bind,EVENTS={CLICK:"click",FUSING:"fusing",MOUSEENTER:"mouseenter",MOUSEDOWN:"mousedown",MOUSELEAVE:"mouseleave",MOUSEUP:"mouseup"},STATES={FUSING:"cursor-fusing",HOVERING:"cursor-hovering",HOVERED:"cursor-hovered"},CANVAS_EVENTS={DOWN:["mousedown","touchstart"],UP:["mouseup","touchend"]},WEBXR_EVENTS={DOWN:["selectstart"],UP:["selectend"]},CANVAS_HOVER_CLASS="a-mouse-cursor-hover";module.exports.Component=registerComponent("cursor",{dependencies:["raycaster"],schema:{downEvents:{default:[]},fuse:{default:utils.device.isMobile()},fuseTimeout:{default:1500,min:0},mouseCursorStylesEnabled:{default:!0},upEvents:{default:[]},rayOrigin:{default:"entity",oneOf:["mouse","entity"]}},init:function(){var e=this;this.fuseTimeout=void 0,this.cursorDownEl=null,this.intersectedEl=null,this.canvasBounds=document.body.getBoundingClientRect(),this.isCursorDown=!1,this.updateCanvasBounds=utils.debounce(function(){e.canvasBounds=e.el.sceneEl.canvas.getBoundingClientRect()},500),this.eventDetail={},this.intersectedEventDetail={cursorEl:this.el},this.onCursorDown=bind(this.onCursorDown,this),this.onCursorUp=bind(this.onCursorUp,this),this.onIntersection=bind(this.onIntersection,this),this.onIntersectionCleared=bind(this.onIntersectionCleared,this),this.onMouseMove=bind(this.onMouseMove,this),this.onEnterVR=bind(this.onEnterVR,this)},update:function(e){this.data.rayOrigin!==e.rayOrigin&&this.updateMouseEventListeners()},play:function(){this.addEventListeners()},pause:function(){this.removeEventListeners()},remove:function(){var e=this.el;e.removeState(STATES.HOVERING),e.removeState(STATES.FUSING),clearTimeout(this.fuseTimeout),this.intersectedEl&&this.intersectedEl.removeState(STATES.HOVERED),this.removeEventListeners()},addEventListeners:function(){function e(){t=s.sceneEl.canvas,n.downEvents.length||n.upEvents.length||(CANVAS_EVENTS.DOWN.forEach(function(e){t.addEventListener(e,i.onCursorDown)}),CANVAS_EVENTS.UP.forEach(function(e){t.addEventListener(e,i.onCursorUp)}))}var t,n=this.data,s=this.el,i=this;t=s.sceneEl.canvas,t?e():s.sceneEl.addEventListener("render-target-loaded",e),n.downEvents.forEach(function(e){s.addEventListener(e,i.onCursorDown)}),n.upEvents.forEach(function(e){s.addEventListener(e,i.onCursorUp)}),s.addEventListener("raycaster-intersection",this.onIntersection),s.addEventListener("raycaster-intersection-cleared",this.onIntersectionCleared),s.sceneEl.addEventListener("rendererresize",this.updateCanvasBounds),s.sceneEl.addEventListener("enter-vr",this.onEnterVR),window.addEventListener("resize",this.updateCanvasBounds),window.addEventListener("scroll",this.updateCanvasBounds),this.updateMouseEventListeners()},removeEventListeners:function(){var e,t=this.data,n=this.el,s=this;e=n.sceneEl.canvas,!e||t.downEvents.length||t.upEvents.length||(CANVAS_EVENTS.DOWN.forEach(function(t){e.removeEventListener(t,s.onCursorDown)}),CANVAS_EVENTS.UP.forEach(function(t){e.removeEventListener(t,s.onCursorUp)})),t.downEvents.forEach(function(e){n.removeEventListener(e,s.onCursorDown)}),t.upEvents.forEach(function(e){n.removeEventListener(e,s.onCursorUp)}),n.removeEventListener("raycaster-intersection",this.onIntersection),n.removeEventListener("raycaster-intersection-cleared",this.onIntersectionCleared),e.removeEventListener("mousemove",this.onMouseMove),e.removeEventListener("touchstart",this.onMouseMove),e.removeEventListener("touchmove",this.onMouseMove),n.sceneEl.removeEventListener("rendererresize",this.updateCanvasBounds),n.sceneEl.removeEventListener("enter-vr",this.onEnterVR),window.removeEventListener("resize",this.updateCanvasBounds),window.removeEventListener("scroll",this.updateCanvasBounds)},updateMouseEventListeners:function(){var e,t=this.el;e=t.sceneEl.canvas,e.removeEventListener("mousemove",this.onMouseMove),e.removeEventListener("touchmove",this.onMouseMove),t.setAttribute("raycaster","useWorldCoordinates",!1),"mouse"===this.data.rayOrigin&&(e.addEventListener("mousemove",this.onMouseMove,!1),e.addEventListener("touchmove",this.onMouseMove,!1),t.setAttribute("raycaster","useWorldCoordinates",!0),this.updateCanvasBounds())},onMouseMove:function(){var e=new THREE.Vector3,t=new THREE.Vector2,n=new THREE.Vector3,s={origin:n,direction:e};return function(i){var r,o,a,u=this.canvasBounds,E=this.el.sceneEl.camera;E.parent.updateMatrixWorld(),o="touchmove"===i.type||"touchstart"===i.type?i.touches.item(0):i,r=o.clientX-u.left,a=o.clientY-u.top,t.x=r/u.width*2-1,t.y=-a/u.height*2+1,E&&E.isPerspectiveCamera?(n.setFromMatrixPosition(E.matrixWorld),e.set(t.x,t.y,.5).unproject(E).sub(n).normalize()):E&&E.isOrthographicCamera?(n.set(t.x,t.y,(E.near+E.far)/(E.near-E.far)).unproject(E),e.set(0,0,-1).transformDirection(E.matrixWorld)):console.error("AFRAME.Raycaster: Unsupported camera type: "+E.type),this.el.setAttribute("raycaster",s),"touchmove"===i.type&&i.preventDefault()}}(),onCursorDown:function(e){this.isCursorDown=!0,"mouse"===this.data.rayOrigin&&"touchstart"===e.type&&(this.onMouseMove(e),this.el.components.raycaster.checkIntersections(),e.preventDefault()),this.twoWayEmit(EVENTS.MOUSEDOWN),this.cursorDownEl=this.intersectedEl},onCursorUp:function(e){if(this.isCursorDown){this.isCursorDown=!1;var t=this.data;this.twoWayEmit(EVENTS.MOUSEUP),this.cursorDownEl&&this.cursorDownEl!==this.intersectedEl&&(this.intersectedEventDetail.intersection=null,this.cursorDownEl.emit(EVENTS.MOUSEUP,this.intersectedEventDetail)),t.fuse&&"mouse"!==t.rayOrigin||!this.intersectedEl||this.cursorDownEl!==this.intersectedEl||this.twoWayEmit(EVENTS.CLICK),this.cursorDownEl=null,"touchend"===e.type&&e.preventDefault()}},onIntersection:function(e){var t,n,s,i,r=this.el;n=e.detail.els[0]===r?1:0,i=e.detail.intersections[n],(s=e.detail.els[n])&&this.intersectedEl!==s&&(this.intersectedEl&&(t=this.el.components.raycaster.getIntersection(this.intersectedEl))&&t.distance<=i.distance||(this.clearCurrentIntersection(!0),this.setIntersection(s,i)))},onIntersectionCleared:function(e){-1!==e.detail.clearedEls.indexOf(this.intersectedEl)&&this.clearCurrentIntersection()},onEnterVR:function(){this.clearCurrentIntersection(!0);var e=this.el.sceneEl.xrSession,t=this;e&&"mouse"!==this.data.rayOrigin&&(WEBXR_EVENTS.DOWN.forEach(function(n){e.addEventListener(n,t.onCursorDown)}),WEBXR_EVENTS.UP.forEach(function(n){e.addEventListener(n,t.onCursorUp)}))},setIntersection:function(e,t){var n=this.el,s=this.data,i=this;this.intersectedEl!==e&&(this.intersectedEl=e,n.addState(STATES.HOVERING),e.addState(STATES.HOVERED),this.twoWayEmit(EVENTS.MOUSEENTER),this.data.mouseCursorStylesEnabled&&"mouse"===this.data.rayOrigin&&this.el.sceneEl.canvas.classList.add(CANVAS_HOVER_CLASS),0!==s.fuseTimeout&&s.fuse&&(n.addState(STATES.FUSING),this.twoWayEmit(EVENTS.FUSING),this.fuseTimeout=setTimeout(function(){n.removeState(STATES.FUSING),i.twoWayEmit(EVENTS.CLICK)},s.fuseTimeout)))},clearCurrentIntersection:function(e){var t,n,s,i=this.el;this.intersectedEl&&(this.intersectedEl.removeState(STATES.HOVERED),i.removeState(STATES.HOVERING),i.removeState(STATES.FUSING),this.twoWayEmit(EVENTS.MOUSELEAVE),this.data.mouseCursorStylesEnabled&&"mouse"===this.data.rayOrigin&&this.el.sceneEl.canvas.classList.remove(CANVAS_HOVER_CLASS),this.intersectedEl=null,clearTimeout(this.fuseTimeout),!0!==e&&(s=this.el.components.raycaster.intersections,0!==s.length&&(t=s[0].object.el===i?1:0,(n=s[t])&&this.setIntersection(n.object.el,n))))},twoWayEmit:function(e){var t,n=this.el,s=this.intersectedEl;t=this.el.components.raycaster.getIntersection(s),this.eventDetail.intersectedEl=s,this.eventDetail.intersection=t,n.emit(e,this.eventDetail),s&&(this.intersectedEventDetail.intersection=t,s.emit(e,this.intersectedEventDetail))}});
},{"../core/component":135,"../utils/":210}],78:[function(require,module,exports){
var registerComponent=require("../core/component").registerComponent,bind=require("../utils/bind"),trackedControlsUtils=require("../utils/tracked-controls"),checkControllerPresentAndSetup=trackedControlsUtils.checkControllerPresentAndSetup,emitIfAxesChanged=trackedControlsUtils.emitIfAxesChanged,onButtonEvent=trackedControlsUtils.onButtonEvent,DAYDREAM_CONTROLLER_MODEL_BASE_URL="https://cdn.aframe.io/controllers/google/",DAYDREAM_CONTROLLER_MODEL_OBJ_URL=DAYDREAM_CONTROLLER_MODEL_BASE_URL+"vr_controller_daydream.obj",DAYDREAM_CONTROLLER_MODEL_OBJ_MTL=DAYDREAM_CONTROLLER_MODEL_BASE_URL+"vr_controller_daydream.mtl",isWebXRAvailable=require("../utils/").device.isWebXRAvailable,GAMEPAD_ID_WEBXR="google-daydream",GAMEPAD_ID_WEBVR="Daydream Controller",GAMEPAD_ID_PREFIX=isWebXRAvailable?GAMEPAD_ID_WEBXR:GAMEPAD_ID_WEBVR,INPUT_MAPPING_WEBVR={axes:{trackpad:[0,1]},buttons:["trackpad","menu","system"]},INPUT_MAPPING_WEBXR={axes:{touchpad:[0,1]},buttons:["none","none","touchpad","menu","system"]},INPUT_MAPPING=isWebXRAvailable?INPUT_MAPPING_WEBXR:INPUT_MAPPING_WEBVR;module.exports.Component=registerComponent("daydream-controls",{schema:{hand:{default:""},buttonColor:{type:"color",default:"#000000"},buttonTouchedColor:{type:"color",default:"#777777"},buttonHighlightColor:{type:"color",default:"#FFFFFF"},model:{default:!0},orientationOffset:{type:"vec3"},armModel:{default:!0}},mapping:INPUT_MAPPING,bindMethods:function(){this.onModelLoaded=bind(this.onModelLoaded,this),this.onControllersUpdate=bind(this.onControllersUpdate,this),this.checkIfControllerPresent=bind(this.checkIfControllerPresent,this),this.removeControllersUpdateListener=bind(this.removeControllersUpdateListener,this),this.onAxisMoved=bind(this.onAxisMoved,this)},init:function(){var t=this;this.onButtonChanged=bind(this.onButtonChanged,this),this.onButtonDown=function(e){onButtonEvent(e.detail.id,"down",t)},this.onButtonUp=function(e){onButtonEvent(e.detail.id,"up",t)},this.onButtonTouchStart=function(e){onButtonEvent(e.detail.id,"touchstart",t)},this.onButtonTouchEnd=function(e){onButtonEvent(e.detail.id,"touchend",t)},this.controllerPresent=!1,this.lastControllerCheck=0,this.bindMethods()},addEventListeners:function(){var t=this.el;t.addEventListener("buttonchanged",this.onButtonChanged),t.addEventListener("buttondown",this.onButtonDown),t.addEventListener("buttonup",this.onButtonUp),t.addEventListener("touchstart",this.onButtonTouchStart),t.addEventListener("touchend",this.onButtonTouchEnd),t.addEventListener("model-loaded",this.onModelLoaded),t.addEventListener("axismove",this.onAxisMoved),this.controllerEventsActive=!0},removeEventListeners:function(){var t=this.el;t.removeEventListener("buttonchanged",this.onButtonChanged),t.removeEventListener("buttondown",this.onButtonDown),t.removeEventListener("buttonup",this.onButtonUp),t.removeEventListener("touchstart",this.onButtonTouchStart),t.removeEventListener("touchend",this.onButtonTouchEnd),t.removeEventListener("model-loaded",this.onModelLoaded),t.removeEventListener("axismove",this.onAxisMoved),this.controllerEventsActive=!1},checkIfControllerPresent:function(){checkControllerPresentAndSetup(this,GAMEPAD_ID_PREFIX,this.data.hand?{hand:this.data.hand}:{})},play:function(){this.checkIfControllerPresent(),this.addControllersUpdateListener()},pause:function(){this.removeEventListeners(),this.removeControllersUpdateListener()},injectTrackedControls:function(){var t=this.el,e=this.data;t.setAttribute("tracked-controls",{armModel:e.armModel,hand:e.hand,idPrefix:GAMEPAD_ID_PREFIX,id:GAMEPAD_ID_PREFIX,orientationOffset:e.orientationOffset}),this.data.model&&this.el.setAttribute("obj-model",{obj:DAYDREAM_CONTROLLER_MODEL_OBJ_URL,mtl:DAYDREAM_CONTROLLER_MODEL_OBJ_MTL})},addControllersUpdateListener:function(){this.el.sceneEl.addEventListener("controllersupdated",this.onControllersUpdate,!1)},removeControllersUpdateListener:function(){this.el.sceneEl.removeEventListener("controllersupdated",this.onControllersUpdate,!1)},onControllersUpdate:function(){this.checkIfControllerPresent()},onModelLoaded:function(t){var e,o=t.detail.model;this.data.model&&(e=this.buttonMeshes={},e.menu=o.getObjectByName("AppButton_AppButton_Cylinder.004"),e.system=o.getObjectByName("HomeButton_HomeButton_Cylinder.005"),e.trackpad=o.getObjectByName("TouchPad_TouchPad_Cylinder.003"),e.touchpad=o.getObjectByName("TouchPad_TouchPad_Cylinder.003"),o.position.set(0,0,-.04))},onAxisMoved:function(t){emitIfAxesChanged(this,this.mapping.axes,t)},onButtonChanged:function(t){var e=this.mapping.buttons[t.detail.id];e&&this.el.emit(e+"changed",t.detail.state)},updateModel:function(t,e){this.data.model&&this.updateButtonModel(t,e)},updateButtonModel:function(t,e){var o=this.buttonMeshes;if(o&&o[t]){var n;switch(e){case"down":n=this.data.buttonHighlightColor;break;case"touchstart":n=this.data.buttonTouchedColor;break;default:n=this.data.buttonColor}o[t].material.color.set(n)}}});
},{"../core/component":135,"../utils/":210,"../utils/bind":204,"../utils/tracked-controls":219}],79:[function(require,module,exports){
var registerComponent=require("../core/component").registerComponent,bind=require("../utils/bind"),trackedControlsUtils=require("../utils/tracked-controls"),checkControllerPresentAndSetup=trackedControlsUtils.checkControllerPresentAndSetup,emitIfAxesChanged=trackedControlsUtils.emitIfAxesChanged,onButtonEvent=trackedControlsUtils.onButtonEvent,isWebXRAvailable=require("../utils/").device.isWebXRAvailable,GEARVR_CONTROLLER_MODEL_BASE_URL="https://cdn.aframe.io/controllers/samsung/",GEARVR_CONTROLLER_MODEL_OBJ_URL=GEARVR_CONTROLLER_MODEL_BASE_URL+"gear_vr_controller.obj",GEARVR_CONTROLLER_MODEL_OBJ_MTL=GEARVR_CONTROLLER_MODEL_BASE_URL+"gear_vr_controller.mtl",GAMEPAD_ID_WEBXR="samsung-gearvr",GAMEPAD_ID_WEBVR="Gear VR",GAMEPAD_ID_PREFIX=isWebXRAvailable?GAMEPAD_ID_WEBXR:GAMEPAD_ID_WEBVR,INPUT_MAPPING_WEBVR={axes:{trackpad:[0,1]},buttons:["trackpad","trigger"]},INPUT_MAPPING_WEBXR={axes:{touchpad:[0,1]},buttons:["trigger","none","touchpad","none","menu"]},INPUT_MAPPING=isWebXRAvailable?INPUT_MAPPING_WEBXR:INPUT_MAPPING_WEBVR;module.exports.Component=registerComponent("gearvr-controls",{schema:{hand:{default:""},buttonColor:{type:"color",default:"#000000"},buttonTouchedColor:{type:"color",default:"#777777"},buttonHighlightColor:{type:"color",default:"#FFFFFF"},model:{default:!0},orientationOffset:{type:"vec3"},armModel:{default:!0}},mapping:INPUT_MAPPING,bindMethods:function(){this.onModelLoaded=bind(this.onModelLoaded,this),this.onControllersUpdate=bind(this.onControllersUpdate,this),this.checkIfControllerPresent=bind(this.checkIfControllerPresent,this),this.removeControllersUpdateListener=bind(this.removeControllersUpdateListener,this),this.onAxisMoved=bind(this.onAxisMoved,this)},init:function(){var t=this;this.onButtonChanged=bind(this.onButtonChanged,this),this.onButtonDown=function(e){onButtonEvent(e.detail.id,"down",t)},this.onButtonUp=function(e){onButtonEvent(e.detail.id,"up",t)},this.onButtonTouchStart=function(e){onButtonEvent(e.detail.id,"touchstart",t)},this.onButtonTouchEnd=function(e){onButtonEvent(e.detail.id,"touchend",t)},this.controllerPresent=!1,this.lastControllerCheck=0,this.bindMethods()},addEventListeners:function(){var t=this.el;t.addEventListener("buttonchanged",this.onButtonChanged),t.addEventListener("buttondown",this.onButtonDown),t.addEventListener("buttonup",this.onButtonUp),t.addEventListener("touchstart",this.onButtonTouchStart),t.addEventListener("touchend",this.onButtonTouchEnd),t.addEventListener("model-loaded",this.onModelLoaded),t.addEventListener("axismove",this.onAxisMoved),this.controllerEventsActive=!0},removeEventListeners:function(){var t=this.el;t.removeEventListener("buttonchanged",this.onButtonChanged),t.removeEventListener("buttondown",this.onButtonDown),t.removeEventListener("buttonup",this.onButtonUp),t.removeEventListener("touchstart",this.onButtonTouchStart),t.removeEventListener("touchend",this.onButtonTouchEnd),t.removeEventListener("model-loaded",this.onModelLoaded),t.removeEventListener("axismove",this.onAxisMoved),this.controllerEventsActive=!1},checkIfControllerPresent:function(){checkControllerPresentAndSetup(this,GAMEPAD_ID_PREFIX,this.data.hand?{hand:this.data.hand}:{})},play:function(){this.checkIfControllerPresent(),this.addControllersUpdateListener()},pause:function(){this.removeEventListeners(),this.removeControllersUpdateListener()},injectTrackedControls:function(){var t=this.el,e=this.data;t.setAttribute("tracked-controls",{armModel:e.armModel,hand:e.hand,idPrefix:GAMEPAD_ID_PREFIX,id:GAMEPAD_ID_PREFIX,orientationOffset:e.orientationOffset}),this.data.model&&this.el.setAttribute("obj-model",{obj:GEARVR_CONTROLLER_MODEL_OBJ_URL,mtl:GEARVR_CONTROLLER_MODEL_OBJ_MTL})},addControllersUpdateListener:function(){this.el.sceneEl.addEventListener("controllersupdated",this.onControllersUpdate,!1)},removeControllersUpdateListener:function(){this.el.sceneEl.removeEventListener("controllersupdated",this.onControllersUpdate,!1)},onControllersUpdate:function(){this.checkIfControllerPresent()},onModelLoaded:function(t){var e,n=t.detail.model;this.data.model&&(e=this.buttonMeshes={},e.trigger=n.children[2],e.trackpad=n.children[1],e.touchpad=n.children[1])},onButtonChanged:function(t){var e=this.mapping.buttons[t.detail.id];e&&this.el.emit(e+"changed",t.detail.state)},onAxisMoved:function(t){emitIfAxesChanged(this,this.mapping.axes,t)},updateModel:function(t,e){this.data.model&&this.updateButtonModel(t,e)},updateButtonModel:function(t,e){var n=this.buttonMeshes;if(n&&n[t]){var o;switch(e){case"down":o=this.data.buttonHighlightColor;break;case"touchstart":o=this.data.buttonTouchedColor;break;default:o=this.data.buttonColor}n[t].material.color.set(o)}}});
},{"../core/component":135,"../utils/":210,"../utils/bind":204,"../utils/tracked-controls":219}],80:[function(require,module,exports){
var registerComponent=require("../core/component").registerComponent,bind=require("../utils/bind"),trackedControlsUtils=require("../utils/tracked-controls"),checkControllerPresentAndSetup=trackedControlsUtils.checkControllerPresentAndSetup,emitIfAxesChanged=trackedControlsUtils.emitIfAxesChanged,onButtonEvent=trackedControlsUtils.onButtonEvent,GAMEPAD_ID_PREFIX="generic",INPUT_MAPPING={axes:{touchpad:[0,1],thumbstick:[2,3]},buttons:["trigger","squeeze","touchpad","thumbstick"]};module.exports.Component=registerComponent("generic-tracked-controller-controls",{schema:{hand:{default:""},defaultModel:{default:!0},defaultModelColor:{default:"gray"},orientationOffset:{type:"vec3"},disabled:{default:!1}},mapping:INPUT_MAPPING,bindMethods:function(){this.onControllersUpdate=bind(this.onControllersUpdate,this),this.checkIfControllerPresent=bind(this.checkIfControllerPresent,this),this.removeControllersUpdateListener=bind(this.removeControllersUpdateListener,this),this.onAxisMoved=bind(this.onAxisMoved,this)},init:function(){var t=this;this.onButtonChanged=bind(this.onButtonChanged,this),this.onButtonDown=function(e){onButtonEvent(e.detail.id,"down",t)},this.onButtonUp=function(e){onButtonEvent(e.detail.id,"up",t)},this.onButtonTouchStart=function(e){onButtonEvent(e.detail.id,"touchstart",t)},this.onButtonTouchEnd=function(e){onButtonEvent(e.detail.id,"touchend",t)},this.controllerPresent=!1,this.wasControllerConnected=!1,this.lastControllerCheck=0,this.rendererSystem=this.el.sceneEl.systems.renderer,this.bindMethods(),this.el.addEventListener("controllerconnected",function(e){e.detail.name!==t.name&&(t.wasControllerConnected=!0,t.removeEventListeners(),t.removeControllersUpdateListener())})},addEventListeners:function(){var t=this.el;t.addEventListener("buttonchanged",this.onButtonChanged),t.addEventListener("buttondown",this.onButtonDown),t.addEventListener("buttonup",this.onButtonUp),t.addEventListener("touchstart",this.onButtonTouchStart),t.addEventListener("touchend",this.onButtonTouchEnd),t.addEventListener("axismove",this.onAxisMoved),this.controllerEventsActive=!0},removeEventListeners:function(){var t=this.el;t.removeEventListener("buttonchanged",this.onButtonChanged),t.removeEventListener("buttondown",this.onButtonDown),t.removeEventListener("buttonup",this.onButtonUp),t.removeEventListener("touchstart",this.onButtonTouchStart),t.removeEventListener("touchend",this.onButtonTouchEnd),t.removeEventListener("axismove",this.onAxisMoved),this.controllerEventsActive=!1},checkIfControllerPresent:function(){var t=this.data,e=t.hand?t.hand:void 0;checkControllerPresentAndSetup(this,GAMEPAD_ID_PREFIX,{hand:e,iterateControllerProfiles:!0})},play:function(){this.wasControllerConnected||(this.checkIfControllerPresent(),this.addControllersUpdateListener())},pause:function(){this.removeEventListeners(),this.removeControllersUpdateListener()},injectTrackedControls:function(){var t=this.el,e=this.data;if(this.el.components["tracked-controls"])return void this.removeEventListeners();t.setAttribute("tracked-controls",{hand:e.hand,idPrefix:GAMEPAD_ID_PREFIX,orientationOffset:e.orientationOffset,iterateControllerProfiles:!0}),this.data.defaultModel&&this.initDefaultModel()},addControllersUpdateListener:function(){this.el.sceneEl.addEventListener("controllersupdated",this.onControllersUpdate,!1)},removeControllersUpdateListener:function(){this.el.sceneEl.removeEventListener("controllersupdated",this.onControllersUpdate,!1)},onControllersUpdate:function(){this.checkIfControllerPresent()},onButtonChanged:function(t){var e=this.mapping.buttons[t.detail.id];e&&this.el.emit(e+"changed",t.detail.state)},onAxisMoved:function(t){emitIfAxesChanged(this,this.mapping.axes,t)},initDefaultModel:function(){var t=this.modelEl=document.createElement("a-entity");t.setAttribute("geometry",{primitive:"sphere",radius:.03}),t.setAttribute("material",{color:this.data.color}),this.el.appendChild(t)}});
},{"../core/component":135,"../utils/bind":204,"../utils/tracked-controls":219}],81:[function(require,module,exports){
var geometries=require("../core/geometry").geometries,geometryNames=require("../core/geometry").geometryNames,registerComponent=require("../core/component").registerComponent,THREE=require("../lib/three"),dummyGeometry=new THREE.BufferGeometry;module.exports.Component=registerComponent("geometry",{schema:{buffer:{default:!0},primitive:{default:"box",oneOf:geometryNames,schemaChange:!0},skipCache:{default:!1}},init:function(){this.geometry=null},update:function(e){var t,r=this.data,m=this.el,o=this.system;this.geometry&&(o.unuseGeometry(e),this.geometry=null),this.geometry=o.getOrCreateGeometry(r),t=m.getObject3D("mesh"),t?t.geometry=this.geometry:(t=new THREE.Mesh,t.geometry=this.geometry,this.el.getAttribute("material")||(t.material=new THREE.MeshStandardMaterial({color:16777215*Math.random(),metalness:0,roughness:.5})),m.setObject3D("mesh",t))},remove:function(){this.system.unuseGeometry(this.data),this.el.getObject3D("mesh").geometry=dummyGeometry,this.geometry=null},updateSchema:function(e){var t=this.oldData&&this.oldData.primitive,r=e.primitive,m=geometries[r]&&geometries[r].schema;if(!m)throw new Error("Unknown geometry schema `"+r+"`");t&&t===r||this.extendSchema(m)}});
},{"../core/component":135,"../core/geometry":136,"../lib/three":183}],82:[function(require,module,exports){
var registerComponent=require("../core/component").registerComponent,THREE=require("../lib/three"),utils=require("../utils/"),warn=utils.debug("components:gltf-model:warn");module.exports.Component=registerComponent("gltf-model",{schema:{type:"model"},init:function(){var e=this,t=this.system.getDRACOLoader(),o=this.system.getMeshoptDecoder();this.model=null,this.loader=new THREE.GLTFLoader,t&&this.loader.setDRACOLoader(t),this.ready=o?o.then(function(t){e.loader.setMeshoptDecoder(t)}):Promise.resolve()},update:function(){var e=this,t=this.el,o=this.data;o&&(this.remove(),this.ready.then(function(){e.loader.load(o,function(o){e.model=o.scene||o.scenes[0],e.model.animations=o.animations,t.setObject3D("mesh",e.model),t.emit("model-loaded",{format:"gltf",model:e.model})},void 0,function(e){var s=e&&e.message?e.message:"Failed to load glTF model";warn(s),t.emit("model-error",{format:"gltf",src:o})})}))},remove:function(){this.model&&this.el.removeObject3D("mesh")}});
},{"../core/component":135,"../lib/three":183,"../utils/":210}],83:[function(require,module,exports){
function getGestureEventName(t,e){var n;if(t)return n=EVENTS[t],"grip"===n?n+(e?"close":"open"):"point"===n?n+(e?"up":"down"):"pointing"===n||"pistol"===n?n+(e?"start":"end"):void 0}function isViveController(t){var e=t&&t.controller;return e&&(e.id&&0===e.id.indexOf("OpenVR ")||e.profiles&&e.profiles[0]&&"htc-vive"===e.profiles[0])}var registerComponent=require("../core/component").registerComponent,MODEL_URLS={toonLeft:"https://cdn.aframe.io/controllers/hands/leftHand.glb",toonRight:"https://cdn.aframe.io/controllers/hands/rightHand.glb",lowPolyLeft:"https://cdn.aframe.io/controllers/hands/leftHandLow.glb",lowPolyRight:"https://cdn.aframe.io/controllers/hands/rightHandLow.glb",highPolyLeft:"https://cdn.aframe.io/controllers/hands/leftHandHigh.glb",highPolyRight:"https://cdn.aframe.io/controllers/hands/rightHandHigh.glb"},ANIMATIONS={open:"Open",point:"Point",pointThumb:"Point + Thumb",fist:"Fist",hold:"Hold",thumbUp:"Thumb Up"},EVENTS={};EVENTS[ANIMATIONS.fist]="grip",EVENTS[ANIMATIONS.thumbUp]="pistol",EVENTS[ANIMATIONS.point]="pointing",module.exports.Component=registerComponent("hand-controls",{schema:{color:{default:"white",type:"color"},hand:{default:"left"},handModelStyle:{default:"lowPoly",oneOf:["lowPoly","highPoly","toon"]}},init:function(){var t=this,e=this.el;this.gesture=ANIMATIONS.open,this.pressedButtons={},this.touchedButtons={},this.loader=new THREE.GLTFLoader,this.loader.setCrossOrigin("anonymous"),this.onGripDown=function(){t.handleButton("grip","down")},this.onGripUp=function(){t.handleButton("grip","up")},this.onTrackpadDown=function(){t.handleButton("trackpad","down")},this.onTrackpadUp=function(){t.handleButton("trackpad","up")},this.onTrackpadTouchStart=function(){t.handleButton("trackpad","touchstart")},this.onTrackpadTouchEnd=function(){t.handleButton("trackpad","touchend")},this.onTriggerDown=function(){t.handleButton("trigger","down")},this.onTriggerUp=function(){t.handleButton("trigger","up")},this.onTriggerTouchStart=function(){t.handleButton("trigger","touchstart")},this.onTriggerTouchEnd=function(){t.handleButton("trigger","touchend")},this.onGripTouchStart=function(){t.handleButton("grip","touchstart")},this.onGripTouchEnd=function(){t.handleButton("grip","touchend")},this.onThumbstickDown=function(){t.handleButton("thumbstick","down")},this.onThumbstickUp=function(){t.handleButton("thumbstick","up")},this.onAorXTouchStart=function(){t.handleButton("AorX","touchstart")},this.onAorXTouchEnd=function(){t.handleButton("AorX","touchend")},this.onBorYTouchStart=function(){t.handleButton("BorY","touchstart")},this.onBorYTouchEnd=function(){t.handleButton("BorY","touchend")},this.onSurfaceTouchStart=function(){t.handleButton("surface","touchstart")},this.onSurfaceTouchEnd=function(){t.handleButton("surface","touchend")},this.onControllerConnected=this.onControllerConnected.bind(this),this.onControllerDisconnected=this.onControllerDisconnected.bind(this),e.addEventListener("controllerconnected",this.onControllerConnected),e.addEventListener("controllerdisconnected",this.onControllerDisconnected),e.object3D.visible=!1},play:function(){this.addEventListeners()},pause:function(){this.removeEventListeners()},tick:function(t,e){var n=this.el.getObject3D("mesh");n&&n.mixer&&n.mixer.update(e/1e3)},onControllerConnected:function(){this.el.object3D.visible=!0},onControllerDisconnected:function(){this.el.object3D.visible=!1},addEventListeners:function(){var t=this.el;t.addEventListener("gripdown",this.onGripDown),t.addEventListener("gripup",this.onGripUp),t.addEventListener("trackpaddown",this.onTrackpadDown),t.addEventListener("trackpadup",this.onTrackpadUp),t.addEventListener("trackpadtouchstart",this.onTrackpadTouchStart),t.addEventListener("trackpadtouchend",this.onTrackpadTouchEnd),t.addEventListener("triggerdown",this.onTriggerDown),t.addEventListener("triggerup",this.onTriggerUp),t.addEventListener("triggertouchstart",this.onTriggerTouchStart),t.addEventListener("triggertouchend",this.onTriggerTouchEnd),t.addEventListener("griptouchstart",this.onGripTouchStart),t.addEventListener("griptouchend",this.onGripTouchEnd),t.addEventListener("thumbstickdown",this.onThumbstickDown),t.addEventListener("thumbstickup",this.onThumbstickUp),t.addEventListener("abuttontouchstart",this.onAorXTouchStart),t.addEventListener("abuttontouchend",this.onAorXTouchEnd),t.addEventListener("bbuttontouchstart",this.onBorYTouchStart),t.addEventListener("bbuttontouchend",this.onBorYTouchEnd),t.addEventListener("xbuttontouchstart",this.onAorXTouchStart),t.addEventListener("xbuttontouchend",this.onAorXTouchEnd),t.addEventListener("ybuttontouchstart",this.onBorYTouchStart),t.addEventListener("ybuttontouchend",this.onBorYTouchEnd),t.addEventListener("surfacetouchstart",this.onSurfaceTouchStart),t.addEventListener("surfacetouchend",this.onSurfaceTouchEnd)},removeEventListeners:function(){var t=this.el;t.removeEventListener("gripdown",this.onGripDown),t.removeEventListener("gripup",this.onGripUp),t.removeEventListener("trackpaddown",this.onTrackpadDown),t.removeEventListener("trackpadup",this.onTrackpadUp),t.removeEventListener("trackpadtouchstart",this.onTrackpadTouchStart),t.removeEventListener("trackpadtouchend",this.onTrackpadTouchEnd),t.removeEventListener("triggerdown",this.onTriggerDown),t.removeEventListener("triggerup",this.onTriggerUp),t.removeEventListener("triggertouchstart",this.onTriggerTouchStart),t.removeEventListener("triggertouchend",this.onTriggerTouchEnd),t.removeEventListener("griptouchstart",this.onGripTouchStart),t.removeEventListener("griptouchend",this.onGripTouchEnd),t.removeEventListener("thumbstickdown",this.onThumbstickDown),t.removeEventListener("thumbstickup",this.onThumbstickUp),t.removeEventListener("abuttontouchstart",this.onAorXTouchStart),t.removeEventListener("abuttontouchend",this.onAorXTouchEnd),t.removeEventListener("bbuttontouchstart",this.onBorYTouchStart),t.removeEventListener("bbuttontouchend",this.onBorYTouchEnd),t.removeEventListener("xbuttontouchstart",this.onAorXTouchStart),t.removeEventListener("xbuttontouchend",this.onAorXTouchEnd),t.removeEventListener("ybuttontouchstart",this.onBorYTouchStart),t.removeEventListener("ybuttontouchend",this.onBorYTouchEnd),t.removeEventListener("surfacetouchstart",this.onSurfaceTouchStart),t.removeEventListener("surfacetouchend",this.onSurfaceTouchEnd)},update:function(t){var e,n=this.el,o=this.data.hand,i=this.data.handModelStyle,r=this.data.color,s=this;if(e={hand:o,model:!1},o!==t){var h=MODEL_URLS[i+o.charAt(0).toUpperCase()+o.slice(1)];this.loader.load(h,function(t){var i=t.scene.children[0],h="left"===o?Math.PI/2:-Math.PI/2;i.mixer=new THREE.AnimationMixer(i),s.clips=t.animations,n.setObject3D("mesh",i),i.children[1].material.color=new THREE.Color(r),i.position.set(0,0,0),i.rotation.set(0,0,h),n.setAttribute("magicleap-controls",e),n.setAttribute("vive-controls",e),n.setAttribute("oculus-touch-controls",e),n.setAttribute("windows-motion-controls",e),n.setAttribute("hp-mixed-reality-controls",e)})}},remove:function(){this.el.removeObject3D("mesh")},handleButton:function(t,e){var n,o="down"===e,i="touchstart"===e;if(0===e.indexOf("touch")){if(i===this.touchedButtons[t])return;this.touchedButtons[t]=i}else{if(o===this.pressedButtons[t])return;this.pressedButtons[t]=o}n=this.gesture,this.gesture=this.determineGesture(),this.gesture!==n&&(this.animateGesture(this.gesture,n),this.emitGestureEvents(this.gesture,n))},determineGesture:function(){var t,e=this.pressedButtons.grip,n=this.pressedButtons.surface||this.touchedButtons.surface,o=this.pressedButtons.trackpad||this.touchedButtons.trackpad,i=this.pressedButtons.trigger||this.touchedButtons.trigger,r=this.touchedButtons.AorX||this.touchedButtons.BorY;return isViveController(this.el.components["tracked-controls"])?e||i?t=ANIMATIONS.fist:o&&(t=ANIMATIONS.point):e?t=n||r||o?i?ANIMATIONS.fist:ANIMATIONS.point:i?ANIMATIONS.thumbUp:ANIMATIONS.pointThumb:i&&(t=ANIMATIONS.hold),t},getClip:function(t){var e,n;for(n=0;n<this.clips.length;n++)if(e=this.clips[n],e.name===t)return e},animateGesture:function(t,e){if(t)return void this.playAnimation(t||ANIMATIONS.open,e,!1);this.playAnimation(e,e,!0)},emitGestureEvents:function(t,e){var n,o=this.el;e!==t&&(n=getGestureEventName(e,!1),n&&o.emit(n),(n=getGestureEventName(t,!0))&&o.emit(n))},playAnimation:function(t,e,n){var o,i,r,s=this.el.getObject3D("mesh");if(s){if(s.mixer.stopAllAction(),o=this.getClip(t),r=s.mixer.clipAction(o),r.clampWhenFinished=!0,r.loop=THREE.LoopRepeat,r.repetitions=0,r.timeScale=n?-1:1,r.time=n?o.duration:0,r.weight=1,!e||t===e)return s.mixer.stopAllAction(),void r.play();o=this.getClip(e),i=s.mixer.clipAction(o),i.weight=.15,i.play(),r.play(),i.crossFadeTo(r,.15,!0)}}});
},{"../core/component":135}],84:[function(require,module,exports){
/* global THREE, XRRigidTransform */
var registerComponent = require('../core/component').registerComponent;
var bind = require('../utils/bind');

var trackedControlsUtils = require('../utils/tracked-controls');
var checkControllerPresentAndSetup = trackedControlsUtils.checkControllerPresentAndSetup;

var LEFT_HAND_MODEL_URL = 'https://cdn.aframe.io/controllers/oculus-hands/v3/left.glb';
var RIGHT_HAND_MODEL_URL = 'https://cdn.aframe.io/controllers/oculus-hands/v3/right.glb';

var BONE_PREFIX = {
  left: 'b_l_',
  right: 'b_r_'
};

var JOINTS = [
  'wrist',
  'thumb-metacarpal',
  'thumb-phalanx-proximal',
  'thumb-phalanx-distal',
  'thumb-tip',
  'index-finger-metacarpal',
  'index-finger-phalanx-proximal',
  'index-finger-phalanx-intermediate',
  'index-finger-phalanx-distal',
  'index-finger-tip',
  'middle-finger-metacarpal',
  'middle-finger-phalanx-proximal',
  'middle-finger-phalanx-intermediate',
  'middle-finger-phalanx-distal',
  'middle-finger-tip',
  'ring-finger-metacarpal',
  'ring-finger-phalanx-proximal',
  'ring-finger-phalanx-intermediate',
  'ring-finger-phalanx-distal',
  'ring-finger-tip',
  'pinky-finger-metacarpal',
  'pinky-finger-phalanx-proximal',
  'pinky-finger-phalanx-intermediate',
  'pinky-finger-phalanx-distal',
  'pinky-finger-tip'
];

var BONE_MAPPING = {
  'wrist': 'wrist',
  'thumb-metacarpal': 'thumb1',
  'thumb-phalanx-proximal': 'thumb2',
  'thumb-phalanx-distal': 'thumb3',
  'thumb-tip': 'thumb_null',
  'index-finger-metacarpal': 'index0',
  'index-finger-phalanx-proximal': 'index1',
  'index-finger-phalanx-intermediate': 'index2',
  'index-finger-phalanx-distal': 'index3',
  'index-finger-tip': 'index_null',
  'middle-finger-metacarpal': 'middle0',
  'middle-finger-phalanx-proximal': 'middle1',
  'middle-finger-phalanx-intermediate': 'middle2',
  'middle-finger-phalanx-distal': 'middle3',
  'middle-finger-tip': 'middle_null',
  'ring-finger-metacarpal': 'ring0',
  'ring-finger-phalanx-proximal': 'ring1',
  'ring-finger-phalanx-intermediate': 'ring2',
  'ring-finger-phalanx-distal': 'ring3',
  'ring-finger-tip': 'ring_null',
  'pinky-finger-metacarpal': 'pinky0',
  'pinky-finger-phalanx-proximal': 'pinky1',
  'pinky-finger-phalanx-intermediate': 'pinky2',
  'pinky-finger-phalanx-distal': 'pinky3',
  'pinky-finger-tip': 'pinky_null'
};

var PINCH_START_DISTANCE = 0.015;
var PINCH_END_DISTANCE = 0.03;
var PINCH_POSITION_INTERPOLATION = 0.5;

/**
 * Controls for hand tracking
 */
module.exports.Component = registerComponent('hand-tracking-controls', {
  schema: {
    hand: {default: 'right', oneOf: ['left', 'right']},
    modelStyle: {default: 'mesh', oneOf: ['dots', 'mesh']},
    modelColor: {default: 'white'}
  },

  bindMethods: function () {
    this.onControllersUpdate = bind(this.onControllersUpdate, this);
    this.checkIfControllerPresent = bind(this.checkIfControllerPresent, this);
    this.removeControllersUpdateListener = bind(this.removeControllersUpdateListener, this);
  },

  addEventListeners: function () {
    this.el.addEventListener('model-loaded', this.onModelLoaded);
    for (var i = 0; i < this.jointEls.length; ++i) {
      this.jointEls[i].object3D.visible = true;
    }
  },

  removeEventListeners: function () {
    this.el.removeEventListener('model-loaded', this.onModelLoaded);
    for (var i = 0; i < this.jointEls.length; ++i) {
      this.jointEls[i].object3D.visible = false;
    }
  },

  init: function () {
    var sceneEl = this.el.sceneEl;
    var webXROptionalAttributes = sceneEl.getAttribute('webxr').optionalFeatures;
    webXROptionalAttributes.push('hand-tracking');
    sceneEl.setAttribute('webxr', {optionalFeatures: webXROptionalAttributes});
    this.onModelLoaded = this.onModelLoaded.bind(this);
    this.jointEls = [];
    this.controllerPresent = false;
    this.isPinched = false;
    this.pinchEventDetail = {position: new THREE.Vector3()};
    this.indexTipPosition = new THREE.Vector3();

    this.bindMethods();

    this.updateReferenceSpace = this.updateReferenceSpace.bind(this);
    this.el.sceneEl.addEventListener('enter-vr', this.updateReferenceSpace);
    this.el.sceneEl.addEventListener('exit-vr', this.updateReferenceSpace);
  },

  updateReferenceSpace: function () {
    var self = this;
    var xrSession = this.el.sceneEl.xrSession;
    this.referenceSpace = undefined;
    if (!xrSession) { return; }
    var referenceSpaceType = self.el.sceneEl.systems.webxr.sessionReferenceSpaceType;
    xrSession.requestReferenceSpace(referenceSpaceType).then(function (referenceSpace) {
      self.referenceSpace = referenceSpace.getOffsetReferenceSpace(new XRRigidTransform({x: 0, y: 1.5, z: 0}));
    }).catch(function (error) {
      self.el.sceneEl.systems.webxr.warnIfFeatureNotRequested(referenceSpaceType, 'tracked-controls-webxr uses reference space ' + referenceSpaceType);
      throw error;
    });
  },

  checkIfControllerPresent: function () {
    var data = this.data;
    var hand = data.hand ? data.hand : undefined;
    checkControllerPresentAndSetup(
      this, '',
      {hand: hand, iterateControllerProfiles: true, handTracking: true});
  },

  play: function () {
    this.checkIfControllerPresent();
    this.addControllersUpdateListener();
  },

  tick: function () {
    var sceneEl = this.el.sceneEl;
    var controller = this.el.components['tracked-controls'] && this.el.components['tracked-controls'].controller;
    var frame = sceneEl.frame;
    var trackedControlsWebXR = this.el.components['tracked-controls-webxr'];
    if (!controller || !frame || !trackedControlsWebXR) { return; }
    if (controller.hand) {
      this.el.object3D.position.set(0, 0, 0);
      this.el.object3D.rotation.set(0, 0, 0);
      if (frame.getJointPose) { this.updateHandModel(); }
      this.detectGesture();
    }
  },

  updateHandModel: function () {
    if (this.data.modelStyle === 'dots') {
      this.updateHandDotsModel();
    }

    if (this.data.modelStyle === 'mesh') {
      this.updateHandMeshModel();
    }
  },

  getBone: function (name) {
    var bones = this.bones;
    for (var i = 0; i < bones.length; i++) {
      if (bones[i].name === name) { return bones[i]; }
    }
    return null;
  },

  updateHandMeshModel: function () {
    var frame = this.el.sceneEl.frame;
    var controller = this.el.components['tracked-controls'] && this.el.components['tracked-controls'].controller;
    var referenceSpace = this.referenceSpace;

    if (!controller || !this.mesh || !referenceSpace) { return; }
    this.mesh.visible = false;
    for (var inputjoint of controller.hand.values()) {
      var bone;
      var jointPose;
      var jointTransform;
      jointPose = frame.getJointPose(inputjoint, referenceSpace);
      if (!BONE_MAPPING[inputjoint.jointName]) { continue; }
      bone = this.getBone(BONE_PREFIX[this.data.hand] + BONE_MAPPING[inputjoint.jointName]);
      if (bone != null && jointPose) {
        jointTransform = jointPose.transform;
        this.mesh.visible = true;
        bone.position.copy(jointTransform.position).multiplyScalar(100);
        bone.quaternion.set(jointTransform.orientation.x, jointTransform.orientation.y, jointTransform.orientation.z, jointTransform.orientation.w);
      }
    }
  },

  updateHandDotsModel: function () {
    var frame = this.el.sceneEl.frame;
    var controller = this.el.components['tracked-controls'] && this.el.components['tracked-controls'].controller;
    var trackedControlsWebXR = this.el.components['tracked-controls-webxr'];
    var referenceSpace = trackedControlsWebXR.system.referenceSpace;
    var jointEl;
    var object3D;
    var jointPose;
    var i = 0;

    for (var inputjoint of controller.hand.values()) {
      jointEl = this.jointEls[i++];
      object3D = jointEl.object3D;
      jointPose = frame.getJointPose(inputjoint, referenceSpace);
      jointEl.object3D.visible = !!jointPose;
      if (!jointPose) { continue; }
      object3D.matrix.elements = jointPose.transform.matrix;
      object3D.matrix.decompose(object3D.position, object3D.rotation, object3D.scale);
      jointEl.setAttribute('scale', {x: jointPose.radius, y: jointPose.radius, z: jointPose.radius});
    }
  },

  detectGesture: function () {
    this.detectPinch();
  },

  detectPinch: (function () {
    var thumbTipPosition = new THREE.Vector3();
    return function () {
      var frame = this.el.sceneEl.frame;
      var indexTipPosition = this.indexTipPosition;
      var controller = this.el.components['tracked-controls'] && this.el.components['tracked-controls'].controller;
      var trackedControlsWebXR = this.el.components['tracked-controls-webxr'];
      var referenceSpace = this.referenceSpace || trackedControlsWebXR.system.referenceSpace;
      var indexTip = controller.hand.get('index-finger-tip');
      var thumbTip = controller.hand.get('thumb-tip');
      if (!indexTip ||
          !thumbTip) { return; }
      var indexTipPose = frame.getJointPose(indexTip, referenceSpace);
      var thumbTipPose = frame.getJointPose(thumbTip, referenceSpace);

      if (!indexTipPose || !thumbTipPose) { return; }

      thumbTipPosition.copy(thumbTipPose.transform.position);
      indexTipPosition.copy(indexTipPose.transform.position);

      var distance = indexTipPosition.distanceTo(thumbTipPosition);

      if (distance < PINCH_START_DISTANCE && this.isPinched === false) {
        this.isPinched = true;
        this.pinchEventDetail.position.copy(indexTipPosition).lerp(thumbTipPosition, PINCH_POSITION_INTERPOLATION);
        this.pinchEventDetail.position.y += 1.5;
        this.el.emit('pinchstarted', this.pinchEventDetail);
      }

      if (distance > PINCH_END_DISTANCE && this.isPinched === true) {
        this.isPinched = false;
        this.pinchEventDetail.position.copy(indexTipPosition).lerp(thumbTipPosition, PINCH_POSITION_INTERPOLATION);
        this.pinchEventDetail.position.y += 1.5;
        this.el.emit('pinchended', this.pinchEventDetail);
      }

      if (this.isPinched) {
        this.pinchEventDetail.position.copy(indexTipPosition).lerp(thumbTipPosition, PINCH_POSITION_INTERPOLATION);
        this.pinchEventDetail.position.y += 1.5;
        this.el.emit('pinchmoved', this.pinchEventDetail);
      }

      indexTipPosition.y += 1.5;
    };
  })(),

  pause: function () {
    this.removeEventListeners();
    this.removeControllersUpdateListener();
  },

  injectTrackedControls: function () {
    var el = this.el;
    var data = this.data;
    el.setAttribute('tracked-controls', {
      hand: data.hand,
      iterateControllerProfiles: true,
      handTrackingEnabled: true
    });
    this.initDefaultModel();
  },

  addControllersUpdateListener: function () {
    this.el.sceneEl.addEventListener('controllersupdated', this.onControllersUpdate, false);
  },

  removeControllersUpdateListener: function () {
    this.el.sceneEl.removeEventListener('controllersupdated', this.onControllersUpdate, false);
  },

  onControllersUpdate: function () {
    var controller;
    this.checkIfControllerPresent();
    controller = this.el.components['tracked-controls'] && this.el.components['tracked-controls'].controller;
    if (!this.el.getObject3D('mesh')) { return; }
    if (!controller || !controller.hand || !controller.hand[0]) {
      this.el.getObject3D('mesh').visible = false;
    }
  },

  initDefaultModel: function () {
    if (this.el.getObject3D('mesh')) { return; }
    if (this.data.modelStyle === 'dots') {
      this.initDotsModel();
    }

    if (this.data.modelStyle === 'mesh') {
      this.initMeshHandModel();
    }
  },

  initDotsModel: function () {
     // Add models just once.
    if (this.jointEls.length !== 0) { return; }
    for (var i = 0; i < JOINTS.length; ++i) {
      var jointEl = this.jointEl = document.createElement('a-entity');
      jointEl.setAttribute('geometry', {
        primitive: 'sphere',
        radius: 1.0
      });
      jointEl.setAttribute('material', {color: this.data.modelColor});
      jointEl.object3D.visible = false;
      this.el.appendChild(jointEl);
      this.jointEls.push(jointEl);
    }
  },

  initMeshHandModel: function () {
    var modelURL = this.data.hand === 'left' ? LEFT_HAND_MODEL_URL : RIGHT_HAND_MODEL_URL;
    this.el.setAttribute('gltf-model', modelURL);
  },

  onModelLoaded: function () {
    var mesh = this.mesh = this.el.getObject3D('mesh').children[0];
    var skinnedMesh = this.skinnedMesh = mesh.children[30];
    if (!this.skinnedMesh) { return; }
    this.bones = skinnedMesh.skeleton.bones;
    this.el.removeObject3D('mesh');
    mesh.position.set(0, 1.5, 0);
    mesh.rotation.set(0, 0, 0);
    skinnedMesh.frustumCulled = false;
    skinnedMesh.material = new THREE.MeshStandardMaterial({skinning: true, color: this.data.modelColor});
    this.el.setObject3D('mesh', mesh);
  }
});


},{"../core/component":135,"../utils/bind":204,"../utils/tracked-controls":219}],85:[function(require,module,exports){
var register=require("../core/component").registerComponent;module.exports.Component=register("hide-on-enter-ar",{init:function(){var e=this;this.el.sceneEl.addEventListener("enter-vr",function(){e.el.sceneEl.is("ar-mode")&&(e.el.object3D.visible=!1)}),this.el.sceneEl.addEventListener("exit-vr",function(){e.el.object3D.visible=!0})}});
},{"../core/component":135}],86:[function(require,module,exports){
var bind=require("../utils/bind"),registerComponent=require("../core/component").registerComponent,THREE=require("../lib/three"),trackedControlsUtils=require("../utils/tracked-controls"),checkControllerPresentAndSetup=trackedControlsUtils.checkControllerPresentAndSetup,emitIfAxesChanged=trackedControlsUtils.emitIfAxesChanged,onButtonEvent=trackedControlsUtils.onButtonEvent,GAMEPAD_ID="hp-mixed-reality",HP_MIXEDL_REALITY_MODEL_GLB_BASE_URL="https://cdn.aframe.io/controllers/hp/mixed-reality/",HP_MIXED_REALITY_POSITION_OFFSET={x:0,y:0,z:.06},HP_MIXED_REALITY_ROTATION_OFFSET={_x:Math.PI/4,_y:0,_z:0,_order:"XYZ"},INPUT_MAPPING_WEBXR={left:{axes:{touchpad:[2,3]},buttons:["trigger","grip","none","thumbstick","xbutton","ybutton"]},right:{axes:{touchpad:[2,3]},buttons:["trigger","grip","none","thumbstick","abutton","bbutton"]}};module.exports.Component=registerComponent("hp-mixed-reality-controls",{schema:{hand:{default:"none"},model:{default:!0},orientationOffset:{type:"vec3"}},mapping:INPUT_MAPPING_WEBXR,init:function(){var t=this;this.controllerPresent=!1,this.lastControllerCheck=0,this.onButtonChanged=bind(this.onButtonChanged,this),this.onButtonDown=function(e){onButtonEvent(e.detail.id,"down",t,t.data.hand)},this.onButtonUp=function(e){onButtonEvent(e.detail.id,"up",t,t.data.hand)},this.onButtonTouchEnd=function(e){onButtonEvent(e.detail.id,"touchend",t,t.data.hand)},this.onButtonTouchStart=function(e){onButtonEvent(e.detail.id,"touchstart",t,t.data.hand)},this.previousButtonValues={},this.rendererSystem=this.el.sceneEl.systems.renderer,this.bindMethods()},update:function(){var t=this.data;this.controllerIndex="right"===t.hand?0:"left"===t.hand?1:2},play:function(){this.checkIfControllerPresent(),this.addControllersUpdateListener()},pause:function(){this.removeEventListeners(),this.removeControllersUpdateListener()},bindMethods:function(){this.onModelLoaded=bind(this.onModelLoaded,this),this.onControllersUpdate=bind(this.onControllersUpdate,this),this.checkIfControllerPresent=bind(this.checkIfControllerPresent,this),this.removeControllersUpdateListener=bind(this.removeControllersUpdateListener,this),this.onAxisMoved=bind(this.onAxisMoved,this)},addEventListeners:function(){var t=this.el;t.addEventListener("buttonchanged",this.onButtonChanged),t.addEventListener("buttondown",this.onButtonDown),t.addEventListener("buttonup",this.onButtonUp),t.addEventListener("touchstart",this.onButtonTouchStart),t.addEventListener("touchend",this.onButtonTouchEnd),t.addEventListener("axismove",this.onAxisMoved),t.addEventListener("model-loaded",this.onModelLoaded),this.controllerEventsActive=!0},removeEventListeners:function(){var t=this.el;t.removeEventListener("buttonchanged",this.onButtonChanged),t.removeEventListener("buttondown",this.onButtonDown),t.removeEventListener("buttonup",this.onButtonUp),t.removeEventListener("touchstart",this.onButtonTouchStart),t.removeEventListener("touchend",this.onButtonTouchEnd),t.removeEventListener("axismove",this.onAxisMoved),t.removeEventListener("model-loaded",this.onModelLoaded),this.controllerEventsActive=!1},checkIfControllerPresent:function(){var t=this.data;checkControllerPresentAndSetup(this,GAMEPAD_ID,{index:this.controllerIndex,hand:t.hand})},injectTrackedControls:function(){var t=this.el,e=this.data;t.setAttribute("tracked-controls",{idPrefix:GAMEPAD_ID,hand:e.hand,controller:this.controllerIndex,orientationOffset:e.orientationOffset}),this.data.model&&this.el.setAttribute("gltf-model",HP_MIXEDL_REALITY_MODEL_GLB_BASE_URL+this.data.hand+".glb")},addControllersUpdateListener:function(){this.el.sceneEl.addEventListener("controllersupdated",this.onControllersUpdate,!1)},removeControllersUpdateListener:function(){this.el.sceneEl.removeEventListener("controllersupdated",this.onControllersUpdate,!1)},onControllersUpdate:function(){this.checkIfControllerPresent()},onButtonChanged:function(t){var e,n=this.mapping[this.data.hand].buttons[t.detail.id];n&&("trigger"===n&&(e=t.detail.state.value,console.log("analog value of trigger press: "+e)),this.el.emit(n+"changed",t.detail.state))},onModelLoaded:function(t){var e=t.detail.model;this.data.model&&(e.position.copy(HP_MIXED_REALITY_POSITION_OFFSET),e.rotation.copy(HP_MIXED_REALITY_ROTATION_OFFSET),this.el.emit("controllermodelready",{name:"hp-mixed-reality-controls",model:this.data.model,rayOrigin:new THREE.Vector3(0,0,0)}))},onAxisMoved:function(t){emitIfAxesChanged(this,this.mapping.axes,t)}});
},{"../core/component":135,"../lib/three":183,"../utils/bind":204,"../utils/tracked-controls":219}],87:[function(require,module,exports){
require("./animation"),require("./camera"),require("./cursor"),require("./daydream-controls"),require("./gearvr-controls"),require("./geometry"),require("./generic-tracked-controller-controls"),require("./gltf-model"),require("./hand-tracking-controls"),require("./hand-controls"),require("./hide-on-enter-ar"),require("./hp-mixed-reality-controls"),require("./layer"),require("./laser-controls"),require("./light"),require("./line"),require("./link"),require("./look-controls"),require("./magicleap-controls"),require("./material"),require("./obj-model"),require("./oculus-go-controls"),require("./oculus-touch-controls"),require("./position"),require("./raycaster"),require("./rotation"),require("./scale"),require("./shadow"),require("./sound"),require("./text"),require("./tracked-controls"),require("./tracked-controls-webvr"),require("./tracked-controls-webxr"),require("./visible"),require("./valve-index-controls"),require("./vive-controls"),require("./vive-focus-controls"),require("./wasd-controls"),require("./windows-motion-controls"),require("./scene/ar-hit-test"),require("./scene/background"),require("./scene/debug"),require("./scene/device-orientation-permission-ui"),require("./scene/embedded"),require("./scene/inspector"),require("./scene/fog"),require("./scene/keyboard-shortcuts"),require("./scene/pool"),require("./scene/screenshot"),require("./scene/stats"),require("./scene/vr-mode-ui");
},{"./animation":75,"./camera":76,"./cursor":77,"./daydream-controls":78,"./gearvr-controls":79,"./generic-tracked-controller-controls":80,"./geometry":81,"./gltf-model":82,"./hand-controls":83,"./hand-tracking-controls":84,"./hide-on-enter-ar":85,"./hp-mixed-reality-controls":86,"./laser-controls":88,"./layer":89,"./light":90,"./line":91,"./link":92,"./look-controls":93,"./magicleap-controls":94,"./material":95,"./obj-model":96,"./oculus-go-controls":97,"./oculus-touch-controls":98,"./position":99,"./raycaster":100,"./rotation":101,"./scale":102,"./scene/ar-hit-test":103,"./scene/background":104,"./scene/debug":105,"./scene/device-orientation-permission-ui":106,"./scene/embedded":107,"./scene/fog":108,"./scene/inspector":109,"./scene/keyboard-shortcuts":110,"./scene/pool":111,"./scene/screenshot":112,"./scene/stats":113,"./scene/vr-mode-ui":114,"./shadow":115,"./sound":116,"./text":117,"./tracked-controls":120,"./tracked-controls-webvr":118,"./tracked-controls-webxr":119,"./valve-index-controls":121,"./visible":122,"./vive-controls":123,"./vive-focus-controls":124,"./wasd-controls":125,"./windows-motion-controls":126}],88:[function(require,module,exports){
var registerComponent=require("../core/component").registerComponent,utils=require("../utils/");registerComponent("laser-controls",{schema:{hand:{default:"right"},model:{default:!0},defaultModelColor:{type:"color",default:"grey"}},init:function(){function t(t){var r=e[t.detail.name];if(r){var o=utils.extend({showLine:!0},r.raycaster||{});t.detail.rayOrigin&&(o.origin=t.detail.rayOrigin.origin,o.direction=t.detail.rayOrigin.direction,o.showLine=!0),t.detail.rayOrigin||!i.modelReady?n.setAttribute("raycaster",o):n.setAttribute("raycaster","showLine",!0),n.setAttribute("cursor",utils.extend({fuse:!1},r.cursor))}}function r(){n.setAttribute("raycaster","showLine",!1)}var e=this.config,o=this.data,n=this.el,i=this,s={hand:o.hand,model:o.model};n.setAttribute("daydream-controls",s),n.setAttribute("gearvr-controls",s),n.setAttribute("hp-mixed-reality-controls",s),n.setAttribute("magicleap-controls",s),n.setAttribute("oculus-go-controls",s),n.setAttribute("oculus-touch-controls",s),n.setAttribute("valve-index-controls",s),n.setAttribute("vive-controls",s),n.setAttribute("vive-focus-controls",s),n.setAttribute("windows-motion-controls",s),n.setAttribute("generic-tracked-controller-controls",s),n.addEventListener("controllerconnected",t),n.addEventListener("controllerdisconnected",r),n.addEventListener("controllermodelready",function(r){t(r),i.modelReady=!0})},config:{"daydream-controls":{cursor:{downEvents:["trackpaddown","triggerdown"],upEvents:["trackpadup","triggerup"]}},"gearvr-controls":{cursor:{downEvents:["triggerdown"],upEvents:["triggerup"]},raycaster:{origin:{x:0,y:.001,z:0}}},"generic-tracked-controller-controls":{cursor:{downEvents:["triggerdown"],upEvents:["triggerup"]}},"hp-mixed-reality-controls":{cursor:{downEvents:["triggerdown"],upEvents:["triggerup"]},raycaster:{origin:{x:0,y:0,z:0}}},"magicleap-controls":{cursor:{downEvents:["trackpaddown","triggerdown"],upEvents:["trackpadup","triggerup"]}},"oculus-go-controls":{cursor:{downEvents:["triggerdown"],upEvents:["triggerup"]},raycaster:{origin:{x:0,y:5e-4,z:0}}},"oculus-touch-controls":{cursor:{downEvents:["triggerdown"],upEvents:["triggerup"]},raycaster:{origin:{x:0,y:0,z:0}}},"valve-index-controls":{cursor:{downEvents:["triggerdown"],upEvents:["triggerup"]}},"vive-controls":{cursor:{downEvents:["triggerdown"],upEvents:["triggerup"]}},"vive-focus-controls":{cursor:{downEvents:["trackpaddown","triggerdown"],upEvents:["trackpadup","triggerup"]}},"windows-motion-controls":{cursor:{downEvents:["triggerdown"],upEvents:["triggerup"]},raycaster:{showLine:!1}}}});
},{"../core/component":135,"../utils/":210}],89:[function(require,module,exports){
/* global THREE, XRRigidTransform, XRWebGLBinding */
var registerComponent = require('../core/component').registerComponent;
var utils = require('../utils/');
var warn = utils.debug('components:layer:warn');

module.exports.Component = registerComponent('layer', {
  schema: {
    type: {default: 'quad', oneOf: ['quad', 'monocubemap', 'stereocubemap']},
    src: {type: 'map'},
    rotateCubemap: {default: false},
    width: {default: 0},
    height: {default: 0}
  },

  init: function () {
    var gl = this.el.sceneEl.renderer.getContext();

    this.quaternion = new THREE.Quaternion();
    this.position = new THREE.Vector3();

    this.bindMethods();
    this.needsRedraw = false;
    this.frameBuffer = gl.createFramebuffer();
    var requiredFeatures = this.el.sceneEl.getAttribute('webxr').requiredFeatures;
    requiredFeatures.push('layers');
    this.el.sceneEl.getAttribute('webxr', 'requiredFeatures', requiredFeatures);
    this.el.sceneEl.addEventListener('enter-vr', this.onEnterVR);
    this.el.sceneEl.addEventListener('exit-vr', this.onExitVR);
  },

  bindMethods: function () {
    this.onRequestedReferenceSpace = this.onRequestedReferenceSpace.bind(this);
    this.onEnterVR = this.onEnterVR.bind(this);
    this.onExitVR = this.onExitVR.bind(this);
  },

  update: function (oldData) {
    if (this.data.src !== oldData.src) { this.updateSrc(); }
  },

  updateSrc: function () {
    var type = this.data.type;
    this.texture = undefined;
    if (type === 'quad') {
      this.loadQuadImage();
      return;
    }

    if (type === 'monocubemap' || type === 'stereocubemap') {
      this.loadCubeMapImages();
      return;
    }
  },

  loadCubeMapImages: function () {
    var type = this.data.type;
    var glayer;
    var xrGLFactory = this.xrGLFactory;
    var frame = this.el.sceneEl.frame;
    var src = this.data.src;

    this.visibilityChanged = false;
    if (!this.layer) { return; }
    if (!src.complete) {
      this.pendingCubeMapUpdate = true;
    } else {
      this.pendingCubeMapUpdate = false;
    }

    if (!this.loadingScreen) {
      this.loadingScreen = true;
    } else {
      this.loadingScreen = false;
    }

    if (type === 'monocubemap') {
      glayer = xrGLFactory.getSubImage(this.layer, frame);
      this.loadCubeMapImage(glayer.colorTexture, src, 0);
    } else {
      glayer = xrGLFactory.getSubImage(this.layer, frame, 'left');
      this.loadCubeMapImage(glayer.colorTexture, src, 0);
      glayer = xrGLFactory.getSubImage(this.layer, frame, 'right');
      this.loadCubeMapImage(glayer.colorTexture, src, 6);
    }
  },

  loadQuadImage: function () {
    var src = this.data.src;
    var self = this;
    this.el.sceneEl.systems.material.loadTexture(src, {src: src}, function textureLoaded (texture) {
      self.el.sceneEl.renderer.initTexture(texture);
      self.texture = texture;
      if (src.tagName === 'VIDEO') { setTimeout(function () { self.textureIsVideo = true; }, 1000); }
      if (self.layer) {
        self.layer.height = self.data.height / 2 || self.texture.image.height / 1000;
        self.layer.width = self.data.width / 2 || self.texture.image.width / 1000;
        self.needsRedraw = true;
      }
      self.updateQuadPanel();
    });
  },

  preGenerateCubeMapTextures: function (src, callback) {
    if (this.data.type === 'monocubemap') {
      this.generateCubeMapTextures(src, 0, callback);
    } else {
      this.generateCubeMapTextures(src, 0, callback);
      this.generateCubeMapTextures(src, 6, callback);
    }
  },

  generateCubeMapTextures: function (src, faceOffset, callback) {
    var data = this.data;
    var cubeFaceSize = this.cubeFaceSize;
    var textureSourceCubeFaceSize = Math.min(src.width, src.height);
    var cubefaceTextures = [];
    var imgTmp0;
    var imgTmp2;

    for (var i = 0; i < 6; i++) {
      var tempCanvas = document.createElement('CANVAS');
      tempCanvas.width = tempCanvas.height = cubeFaceSize;
      var tempCanvasContext = tempCanvas.getContext('2d');

      if (data.rotateCubemap) {
        if (i === 2 || i === 3) {
          tempCanvasContext.save();
          tempCanvasContext.translate(cubeFaceSize, cubeFaceSize);
          tempCanvasContext.rotate(Math.PI);
        }
      }

      // Note that this call to drawImage will not only copy the bytes to the
      // canvas but also could resized the image if our cube face size is
      // smaller than the source image due to GL max texture size.
      tempCanvasContext.drawImage(
        src,
        (i + faceOffset) * textureSourceCubeFaceSize, // top left x coord in source
        0, // top left y coord in source
        textureSourceCubeFaceSize, // x pixel count from source
        textureSourceCubeFaceSize, // y pixel count from source
        0, // dest x offset in the canvas
        0, // dest y offset in the canvas
        cubeFaceSize, // x pixel count in dest
        cubeFaceSize  // y pixel count in dest
      );

      tempCanvasContext.restore();

      if (callback) { callback(); }
      cubefaceTextures.push(tempCanvas);
    }

    if (data.rotateCubemap) {
      imgTmp0 = cubefaceTextures[0];
      imgTmp2 = cubefaceTextures[1];

      cubefaceTextures[0] = imgTmp2;
      cubefaceTextures[1] = imgTmp0;

      imgTmp0 = cubefaceTextures[4];
      imgTmp2 = cubefaceTextures[5];

      cubefaceTextures[4] = imgTmp2;
      cubefaceTextures[5] = imgTmp0;
    }

    if (callback) { callback(); }
    return cubefaceTextures;
  },

  loadCubeMapImage: function (layerColorTexture, src, faceOffset) {
    var gl = this.el.sceneEl.renderer.getContext();
    var cubefaceTextures;

    // dont flip the pixels as we load them into the texture buffer.
    // TEXTURE_CUBE_MAP expects the Y to be flipped for the faces and it already
    // is flipped in our texture image.
    gl.pixelStorei(gl.UNPACK_FLIP_Y_WEBGL, false);
    gl.bindTexture(gl.TEXTURE_CUBE_MAP, layerColorTexture);

    if (!src.complete || this.loadingScreen) {
      cubefaceTextures = this.loadingScreenImages;
    } else {
      cubefaceTextures = this.generateCubeMapTextures(src, faceOffset);
    }

    var errorCode = 0;
    cubefaceTextures.forEach(function (canvas, i) {
      gl.texSubImage2D(
        gl.TEXTURE_CUBE_MAP_POSITIVE_X + i,
        0,
        0, 0,
        gl.RGBA,
        gl.UNSIGNED_BYTE,
        canvas
      );
      errorCode = gl.getError();
    });

    if (errorCode !== 0) {
      console.log('renderingError, WebGL Error Code: ' + errorCode);
    }
    gl.bindTexture(gl.TEXTURE_CUBE_MAP, null);
  },

  tick: function () {
    if (!this.el.sceneEl.xrSession) { return; }
    if (!this.layer && this.el.sceneEl.is('vr-mode')) { this.initLayer(); }
    this.updateTransform();
    if (this.data.src.complete && (this.pendingCubeMapUpdate || this.loadingScreen || this.visibilityChanged)) { this.loadCubeMapImages(); }
    if (!this.needsRedraw && !this.layer.needsRedraw && !this.textureIsVideo) { return; }
    if (this.data.type === 'quad') { this.draw(); }
    this.needsRedraw = false;
  },

  initLayer: function () {
    var self = this;
    var type = this.data.type;

    this.el.sceneEl.xrSession.onvisibilitychange = function (evt) {
      self.visibilityChanged = evt.session.visibilityState !== 'hidden';
    };

    if (type === 'quad') {
      this.initQuadLayer();
      return;
    }

    if (type === 'monocubemap' || type === 'stereocubemap') {
      this.initCubeMapLayer();
      return;
    }
  },

  initQuadLayer: function () {
    var sceneEl = this.el.sceneEl;
    var gl = sceneEl.renderer.getContext();
    var xrGLFactory = this.xrGLFactory = new XRWebGLBinding(sceneEl.xrSession, gl);
    if (!this.texture) { return; }
    this.layer = xrGLFactory.createQuadLayer({
      space: this.referenceSpace,
      viewPixelHeight: 2048,
      viewPixelWidth: 2048,
      height: this.data.height / 2 || this.texture.image.height / 1000,
      width: this.data.width / 2 || this.texture.image.width / 1000
    });
    sceneEl.renderer.xr.addLayer(this.layer);
  },

  initCubeMapLayer: function () {
    var src = this.data.src;
    var sceneEl = this.el.sceneEl;
    var gl = sceneEl.renderer.getContext();
    var glSizeLimit = gl.getParameter(gl.MAX_CUBE_MAP_TEXTURE_SIZE);
    var cubeFaceSize = this.cubeFaceSize = Math.min(glSizeLimit, Math.min(src.width, src.height));
    var xrGLFactory = this.xrGLFactory = new XRWebGLBinding(sceneEl.xrSession, gl);
    this.layer = xrGLFactory.createCubeLayer({
      space: this.referenceSpace,
      viewPixelWidth: cubeFaceSize,
      viewPixelHeight: cubeFaceSize,
      layout: this.data.type === 'monocubemap' ? 'mono' : 'stereo',
      isStatic: false
    });

    this.initLoadingScreenImages();
    this.loadCubeMapImages();
    sceneEl.renderer.xr.addLayer(this.layer);
  },

  initLoadingScreenImages: function () {
    var cubeFaceSize = this.cubeFaceSize;
    var loadingScreenImages = this.loadingScreenImages = [];
    for (var i = 0; i < 6; i++) {
      var tempCanvas = document.createElement('CANVAS');
      tempCanvas.width = tempCanvas.height = cubeFaceSize;
      var tempCanvasContext = tempCanvas.getContext('2d');
      tempCanvas.width = tempCanvas.height = cubeFaceSize;
      tempCanvasContext.fillStyle = 'black';
      tempCanvasContext.fillRect(0, 0, cubeFaceSize, cubeFaceSize);
      if (i !== 2 && i !== 3) {
        tempCanvasContext.translate(cubeFaceSize, 0);
        tempCanvasContext.scale(-1, 1);
        tempCanvasContext.fillStyle = 'white';
        tempCanvasContext.font = '30px Arial';
        tempCanvasContext.fillText('Loading', cubeFaceSize / 2, cubeFaceSize / 2);
      }
      loadingScreenImages.push(tempCanvas);
    }
  },

  destroyLayer: function () {
    if (!this.layer) { return; }
    this.el.sceneEl.renderer.xr.removeLayer(this.layer);
    this.layer.destroy();
    this.layer = undefined;
  },

  toggleCompositorLayer: function () {
    this.enableCompositorLayer(!this.layerEnabled);
  },

  enableCompositorLayer: function (enable) {
    this.layerEnabled = enable;
    this.quadPanelEl.object3D.visible = !this.layerEnabled;
  },

  updateQuadPanel: function () {
    var quadPanelEl = this.quadPanelEl;
    if (!this.quadPanelEl) {
      quadPanelEl = this.quadPanelEl = document.createElement('a-entity');
      this.el.appendChild(quadPanelEl);
    }

    quadPanelEl.setAttribute('material', {
      shader: 'flat',
      src: this.data.src,
      transparent: true
    });

    quadPanelEl.setAttribute('geometry', {
      primitive: 'plane',
      height: this.data.height || this.texture.image.height / 1000,
      width: this.data.width || this.texture.image.height / 1000
    });
  },

  draw: function () {
    var sceneEl = this.el.sceneEl;
    var gl = this.el.sceneEl.renderer.getContext();
    var glayer = this.xrGLFactory.getSubImage(this.layer, sceneEl.frame);
    var texture = sceneEl.renderer.properties.get(this.texture).__webglTexture;
    var previousFrameBuffer = gl.getParameter(gl.FRAMEBUFFER_BINDING);

    gl.viewport(glayer.viewport.x, glayer.viewport.y, glayer.viewport.width, glayer.viewport.height);
    gl.bindFramebuffer(gl.FRAMEBUFFER, this.frameBuffer);
    gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, glayer.colorTexture, 0);

    blitTexture(gl, texture, glayer, this.data.src);

    gl.bindFramebuffer(gl.FRAMEBUFFER, previousFrameBuffer);
  },

  updateTransform: function () {
    var el = this.el;
    var position = this.position;
    var quaternion = this.quaternion;
    el.object3D.updateMatrixWorld();
    position.setFromMatrixPosition(el.object3D.matrixWorld);
    quaternion.setFromRotationMatrix(el.object3D.matrixWorld);
    if (!this.layerEnabled) { position.set(0, 0, 100000000); }
    this.layer.transform = new XRRigidTransform(position, quaternion);
  },

  onEnterVR: function () {
    var sceneEl = this.el.sceneEl;
    var xrSession = sceneEl.xrSession;
    if (!sceneEl.hasWebXR || !XRWebGLBinding || !xrSession) {
      warn('The layer component requires WebXR and the layers API enabled');
      return;
    }
    xrSession.requestReferenceSpace('local').then(this.onRequestedReferenceSpace);
    this.needsRedraw = true;
    this.layerEnabled = true;
    if (this.quadPanelEl) {
      this.quadPanelEl.object3D.visible = false;
    }
    if (this.data.src.play) { this.data.src.play(); }
  },

  onExitVR: function () {
    if (this.quadPanelEl) {
      this.quadPanelEl.object3D.visible = true;
    }
    this.destroyLayer();
  },

  onRequestedReferenceSpace: function (referenceSpace) {
    this.referenceSpace = referenceSpace;
  }
});

function blitTexture (gl, texture, subImage, textureEl) {
  var xrReadFramebuffer = gl.createFramebuffer();
  let x1offset = subImage.viewport.x;
  let y1offset = subImage.viewport.y;
  let x2offset = subImage.viewport.x + subImage.viewport.width;
  let y2offset = subImage.viewport.y + subImage.viewport.height;

  // Update video texture.
  if (textureEl.tagName === 'VIDEO') {
    gl.bindTexture(gl.TEXTURE_2D, texture);
    gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, textureEl.width, textureEl.height, gl.RGB, gl.UNSIGNED_BYTE, textureEl);
  }

  // Bind texture to read framebuffer.
  gl.bindFramebuffer(gl.READ_FRAMEBUFFER, xrReadFramebuffer);
  gl.framebufferTexture2D(gl.READ_FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, texture, 0);

  // Blit into layer buffer.
  gl.readBuffer(gl.COLOR_ATTACHMENT0);
  gl.blitFramebuffer(0, 0, textureEl.width, textureEl.height, x1offset, y1offset, x2offset, y2offset, gl.COLOR_BUFFER_BIT, gl.NEAREST);

  gl.bindFramebuffer(gl.READ_FRAMEBUFFER, null);
  gl.deleteFramebuffer(xrReadFramebuffer);
}

},{"../core/component":135,"../utils/":210}],90:[function(require,module,exports){
var bind=require("../utils/bind"),utils=require("../utils"),diff=utils.diff,debug=require("../utils/debug"),registerComponent=require("../core/component").registerComponent,THREE=require("../lib/three"),degToRad=THREE.Math.degToRad,warn=debug("components:light:warn"),CubeLoader=new THREE.CubeTextureLoader,probeCache={};module.exports.Component=registerComponent("light",{schema:{angle:{default:60,if:{type:["spot"]}},color:{type:"color",if:{type:["ambient","directional","hemisphere","point","spot"]}},envMap:{default:"",if:{type:["probe"]}},groundColor:{type:"color",if:{type:["hemisphere"]}},decay:{default:1,if:{type:["point","spot"]}},distance:{default:0,min:0,if:{type:["point","spot"]}},intensity:{default:1,min:0,if:{type:["ambient","directional","hemisphere","point","spot","probe"]}},penumbra:{default:0,min:0,max:1,if:{type:["spot"]}},type:{default:"directional",oneOf:["ambient","directional","hemisphere","point","spot","probe"],schemaChange:!0},target:{type:"selector",if:{type:["spot","directional"]}},castShadow:{default:!1,if:{type:["point","spot","directional"]}},shadowBias:{default:0,if:{castShadow:!0}},shadowCameraFar:{default:500,if:{castShadow:!0}},shadowCameraFov:{default:90,if:{castShadow:!0}},shadowCameraNear:{default:.5,if:{castShadow:!0}},shadowCameraTop:{default:5,if:{castShadow:!0}},shadowCameraRight:{default:5,if:{castShadow:!0}},shadowCameraBottom:{default:-5,if:{castShadow:!0}},shadowCameraLeft:{default:-5,if:{castShadow:!0}},shadowCameraVisible:{default:!1,if:{castShadow:!0}},shadowMapHeight:{default:512,if:{castShadow:!0}},shadowMapWidth:{default:512,if:{castShadow:!0}},shadowRadius:{default:1,if:{castShadow:!0}}},init:function(){var e=this.el;this.light=null,this.defaultTarget=null,this.rendererSystem=this.el.sceneEl.systems.renderer,this.system.registerLight(e)},update:function(e){var a=this.data,t=diff(a,e),o=this.light,r=this.rendererSystem,i=this;if(o&&!("type"in t)){var s=!1;return void Object.keys(t).forEach(function(e){var t=a[e];switch(e){case"color":o.color.set(t),r.applyColorCorrection(o.color);break;case"groundColor":o.groundColor.set(t),r.applyColorCorrection(o.groundColor);break;case"angle":o.angle=degToRad(t);break;case"target":null===t?"spot"!==a.type&&"directional"!==a.type||(o.target=i.defaultTarget):t.hasLoaded?i.onSetTarget(t,o):t.addEventListener("loaded",bind(i.onSetTarget,i,t,o));break;case"envMap":this.updateProbeMap(a,o);break;case"castShadow":case"shadowBias":case"shadowCameraFar":case"shadowCameraFov":case"shadowCameraNear":case"shadowCameraTop":case"shadowCameraRight":case"shadowCameraBottom":case"shadowCameraLeft":case"shadowCameraVisible":case"shadowMapHeight":case"shadowMapWidth":case"shadowRadius":s||(i.updateShadow(),s=!0);break;default:o[e]=t}})}this.setLight(this.data),this.updateShadow()},setLight:function(e){var a=this.el,t=this.getLight(e);t&&(this.light&&a.removeObject3D("light"),this.light=t,this.light.el=a,a.setObject3D("light",this.light),"spot"!==e.type&&"directional"!==e.type&&"hemisphere"!==e.type||a.getObject3D("light").translateY(-1),"spot"===e.type&&(a.setObject3D("light-target",this.defaultTarget),a.getObject3D("light-target").position.set(0,0,-1)))},updateShadow:function(){var e=this.el,a=this.data,t=this.light;t.castShadow=a.castShadow;var o=e.getObject3D("cameraHelper");if(a.shadowCameraVisible&&!o?e.setObject3D("cameraHelper",new THREE.CameraHelper(t.shadow.camera)):!a.shadowCameraVisible&&o&&e.removeObject3D("cameraHelper"),!a.castShadow)return t;t.shadow.bias=a.shadowBias,t.shadow.radius=a.shadowRadius,t.shadow.mapSize.height=a.shadowMapHeight,t.shadow.mapSize.width=a.shadowMapWidth,t.shadow.camera.near=a.shadowCameraNear,t.shadow.camera.far=a.shadowCameraFar,t.shadow.camera instanceof THREE.OrthographicCamera?(t.shadow.camera.top=a.shadowCameraTop,t.shadow.camera.right=a.shadowCameraRight,t.shadow.camera.bottom=a.shadowCameraBottom,t.shadow.camera.left=a.shadowCameraLeft):t.shadow.camera.fov=a.shadowCameraFov,t.shadow.camera.updateProjectionMatrix(),o&&o.update()},getLight:function(e){var a=e.angle,t=new THREE.Color(e.color);this.rendererSystem.applyColorCorrection(t),t=t.getHex();var o=e.decay,r=e.distance,i=new THREE.Color(e.groundColor);this.rendererSystem.applyColorCorrection(i),i=i.getHex();var s=e.intensity,d=e.type,h=e.target,n=null;switch(d.toLowerCase()){case"ambient":return new THREE.AmbientLight(t,s);case"directional":return n=new THREE.DirectionalLight(t,s),this.defaultTarget=n.target,h&&(h.hasLoaded?this.onSetTarget(h,n):h.addEventListener("loaded",bind(this.onSetTarget,this,h,n))),n;case"hemisphere":return new THREE.HemisphereLight(t,i,s);case"point":return new THREE.PointLight(t,s,r,o);case"spot":return n=new THREE.SpotLight(t,s,r,degToRad(a),e.penumbra,o),this.defaultTarget=n.target,h&&(h.hasLoaded?this.onSetTarget(h,n):h.addEventListener("loaded",bind(this.onSetTarget,this,h,n))),n;case"probe":return n=new THREE.LightProbe,this.updateProbeMap(e,n),n;default:warn("%s is not a valid light type. Choose from ambient, directional, hemisphere, point, spot.",d)}},updateProbeMap:function(e,a){e.envMap||a.copy(new THREE.LightProbe),probeCache[e.envMap]instanceof window.Promise&&probeCache[e.envMap].then(function(e){a.copy(e)}),probeCache[e.envMap]instanceof THREE.LightProbe&&a.copy(probeCache[e.envMap]),probeCache[e.envMap]=new window.Promise(function(t){utils.srcLoader.validateCubemapSrc(e.envMap,function(t){CubeLoader.load(t,function(t){var o=THREE.LightProbeGenerator.fromCubeTexture(t);probeCache[e.envMap]=o,a.copy(o)})})})},onSetTarget:function(e,a){a.target=e.object3D},remove:function(){var e=this.el;e.removeObject3D("light"),e.getObject3D("cameraHelper")&&e.removeObject3D("cameraHelper")}});
},{"../core/component":135,"../lib/three":183,"../utils":210,"../utils/bind":204,"../utils/debug":206}],91:[function(require,module,exports){
function isEqualVec3(e,t){return!(!e||!t)&&(e.x===t.x&&e.y===t.y&&e.z===t.z)}var registerComponent=require("../core/component").registerComponent;module.exports.Component=registerComponent("line",{schema:{start:{type:"vec3",default:{x:0,y:0,z:0}},end:{type:"vec3",default:{x:0,y:0,z:0}},color:{type:"color",default:"#74BEC1"},opacity:{type:"number",default:1},visible:{default:!0}},multiple:!0,init:function(){var e,t,r=this.data;this.rendererSystem=this.el.sceneEl.systems.renderer,t=this.material=new THREE.LineBasicMaterial({color:r.color,opacity:r.opacity,transparent:r.opacity<1,visible:r.visible}),e=this.geometry=new THREE.BufferGeometry,e.setAttribute("position",new THREE.BufferAttribute(new Float32Array(6),3)),this.rendererSystem.applyColorCorrection(t.color),this.line=new THREE.Line(e,t),this.el.setObject3D(this.attrName,this.line)},update:function(e){var t=this.data,r=this.geometry,i=!1,o=this.material,n=r.attributes.position.array;isEqualVec3(t.start,e.start)||(n[0]=t.start.x,n[1]=t.start.y,n[2]=t.start.z,i=!0),isEqualVec3(t.end,e.end)||(n[3]=t.end.x,n[4]=t.end.y,n[5]=t.end.z,i=!0),i&&(r.attributes.position.needsUpdate=!0,r.computeBoundingSphere()),o.color.setStyle(t.color),this.rendererSystem.applyColorCorrection(o.color),o.opacity=t.opacity,o.transparent=t.opacity<1,o.visible=t.visible},remove:function(){this.el.removeObject3D("line",this.line)}});
},{"../core/component":135}],92:[function(require,module,exports){
var registerComponent=require("../core/component").registerComponent,registerShader=require("../core/shader").registerShader,THREE=require("../lib/three");module.exports.Component=registerComponent("link",{schema:{backgroundColor:{default:"red",type:"color"},borderColor:{default:"white",type:"color"},highlighted:{default:!1},highlightedColor:{default:"#24CAFF",type:"color"},href:{default:""},image:{type:"asset"},on:{default:"click"},peekMode:{default:!1},title:{default:""},titleColor:{default:"white",type:"color"},visualAspectEnabled:{default:!1}},init:function(){this.navigate=this.navigate.bind(this),this.previousQuaternion=void 0,this.quaternionClone=new THREE.Quaternion,this.hiddenEls=[]},update:function(e){var t,i,r=this.data,o=this.el;r.visualAspectEnabled&&(this.initVisualAspect(),t=r.highlighted?r.highlightedColor:r.backgroundColor,i=r.highlighted?r.highlightedColor:r.borderColor,o.setAttribute("material","backgroundColor",t),o.setAttribute("material","strokeColor",i),r.on!==e.on&&this.updateEventListener(),void 0!==e.peekMode&&r.peekMode!==e.peekMode&&this.updatePeekMode(),r.image&&e.image!==r.image&&o.setAttribute("material","pano","string"==typeof r.image?r.image:r.image.src))},updatePeekMode:function(){var e=this.el,t=this.sphereEl;this.data.peekMode?(this.hideAll(),e.getObject3D("mesh").visible=!1,t.setAttribute("visible",!0)):(this.showAll(),e.getObject3D("mesh").visible=!0,t.setAttribute("visible",!1))},play:function(){this.updateEventListener()},pause:function(){this.removeEventListener()},updateEventListener:function(){var e=this.el;e.isPlaying&&(this.removeEventListener(),e.addEventListener(this.data.on,this.navigate))},removeEventListener:function(){var e=this.data.on;e&&this.el.removeEventListener(e,this.navigate)},initVisualAspect:function(){var e,t,i,r=this.el;this.data.visualAspectEnabled&&!this.visualAspectInitialized&&(i=this.textEl=this.textEl||document.createElement("a-entity"),t=this.sphereEl=this.sphereEl||document.createElement("a-entity"),e=this.semiSphereEl=this.semiSphereEl||document.createElement("a-entity"),r.setAttribute("geometry",{primitive:"circle",radius:1,segments:64}),r.setAttribute("material",{shader:"portal",pano:this.data.image,side:"double"}),i.setAttribute("text",{color:this.data.titleColor,align:"center",font:"kelsonsans",value:this.data.title||this.data.href,width:4}),i.setAttribute("position","0 1.5 0"),r.appendChild(i),e.setAttribute("geometry",{primitive:"sphere",radius:1,phiStart:0,segmentsWidth:64,segmentsHeight:64,phiLength:180,thetaStart:0,thetaLength:360}),e.setAttribute("material",{shader:"portal",borderEnabled:0,pano:this.data.image,side:"back"}),e.setAttribute("rotation","0 180 0"),e.setAttribute("position","0 0 0"),e.setAttribute("visible",!1),r.appendChild(e),t.setAttribute("geometry",{primitive:"sphere",radius:10,segmentsWidth:64,segmentsHeight:64}),t.setAttribute("material",{shader:"portal",borderEnabled:0,pano:this.data.image,side:"back"}),t.setAttribute("visible",!1),r.appendChild(t),this.visualAspectInitialized=!0)},navigate:function(){window.location=this.data.href},tick:function(){var e=new THREE.Vector3,t=new THREE.Vector3,i=new THREE.Quaternion,r=new THREE.Vector3;return function(){var o,a,n=this.el,s=n.object3D,l=n.sceneEl.camera,d=this.textEl;if(this.data.visualAspectEnabled)if(s.updateMatrixWorld(),l.parent.updateMatrixWorld(),l.updateMatrixWorld(),s.matrix.decompose(t,i,r),t.setFromMatrixPosition(s.matrixWorld),e.setFromMatrixPosition(l.matrixWorld),(a=t.distanceTo(e))>20)this.previousQuaternion||(this.quaternionClone.copy(i),this.previousQuaternion=this.quaternionClone),s.lookAt(e);else{if(o=this.calculateCameraPortalOrientation(),a<.5){if(!0===this.semiSphereEl.getAttribute("visible"))return;d.setAttribute("text","width",1.5),o<=0?(d.setAttribute("position","0 0 0.75"),d.setAttribute("rotation","0 180 0"),this.semiSphereEl.setAttribute("rotation","0 0 0")):(d.setAttribute("position","0 0 -0.75"),d.setAttribute("rotation","0 0 0"),this.semiSphereEl.setAttribute("rotation","0 180 0")),n.getObject3D("mesh").visible=!1,this.semiSphereEl.setAttribute("visible",!0),this.peekCameraPortalOrientation=o}else o<=0?d.setAttribute("rotation","0 180 0"):d.setAttribute("rotation","0 0 0"),d.setAttribute("text","width",5),d.setAttribute("position","0 1.5 0"),n.getObject3D("mesh").visible=!0,this.semiSphereEl.setAttribute("visible",!1),this.peekCameraPortalOrientation=void 0;this.previousQuaternion&&(s.quaternion.copy(this.previousQuaternion),this.previousQuaternion=void 0)}}}(),hideAll:function(){var e=this.el,t=this.hiddenEls,i=this;t.length>0||e.sceneEl.object3D.traverse(function(r){r&&r.el&&r.el.hasAttribute("link-controls")||r.el&&r!==e.sceneEl.object3D&&r.el!==e&&r.el!==i.sphereEl&&r.el!==e.sceneEl.cameraEl&&!1!==r.el.getAttribute("visible")&&r.el!==i.textEl&&r.el!==i.semiSphereEl&&(r.el.setAttribute("visible",!1),t.push(r.el))})},showAll:function(){this.hiddenEls.forEach(function(e){e.setAttribute("visible",!0)}),this.hiddenEls=[]},calculateCameraPortalOrientation:function(){var e=new THREE.Matrix4,t=new THREE.Vector3,i=new THREE.Vector3(0,0,1),r=new THREE.Vector3(0,0,0);return function(){var o=this.el,a=o.sceneEl.camera;return t.set(0,0,0),i.set(0,0,1),r.set(0,0,0),o.object3D.matrixWorld.extractRotation(e),i.applyMatrix4(e),o.object3D.updateMatrixWorld(),o.object3D.localToWorld(r),a.parent.parent.updateMatrixWorld(),a.parent.updateMatrixWorld(),a.updateMatrixWorld(),a.localToWorld(t),t.sub(r).normalize(),i.normalize(),Math.sign(i.dot(t))}}(),remove:function(){this.removeEventListener()}}),registerShader("portal",{schema:{borderEnabled:{default:1,type:"int",is:"uniform"},backgroundColor:{default:"red",type:"color",is:"uniform"},pano:{type:"map",is:"uniform"},strokeColor:{default:"white",type:"color",is:"uniform"}},vertexShader:["vec3 portalPosition;","varying vec3 vWorldPosition;","varying float vDistanceToCenter;","varying float vDistance;","void main() {","vDistanceToCenter = clamp(length(position - vec3(0.0, 0.0, 0.0)), 0.0, 1.0);","portalPosition = (modelMatrix * vec4(0.0, 0.0, 0.0, 1.0)).xyz;","vDistance = length(portalPosition - cameraPosition);","vWorldPosition = (modelMatrix * vec4(position, 1.0)).xyz;","gl_Position = projectionMatrix * modelViewMatrix * vec4(position, 1.0);","}"].join("\n"),fragmentShader:["#define RECIPROCAL_PI2 0.15915494","uniform sampler2D pano;","uniform vec3 strokeColor;","uniform vec3 backgroundColor;","uniform float borderEnabled;","varying float vDistanceToCenter;","varying float vDistance;","varying vec3 vWorldPosition;","void main() {","vec3 direction = normalize(vWorldPosition - cameraPosition);","vec2 sampleUV;","float borderThickness = clamp(exp(-vDistance / 50.0), 0.6, 0.95);","sampleUV.y = clamp(direction.y * 0.5  + 0.5, 0.0, 1.0);","sampleUV.x = atan(direction.z, -direction.x) * -RECIPROCAL_PI2 + 0.5;","if (vDistanceToCenter > borderThickness && borderEnabled == 1.0) {","gl_FragColor = vec4(strokeColor, 1.0);","} else {","gl_FragColor = mix(texture2D(pano, sampleUV), vec4(backgroundColor, 1.0), clamp(pow((vDistance / 15.0), 2.0), 0.0, 1.0));","}","}"].join("\n")});
},{"../core/component":135,"../core/shader":145,"../lib/three":183}],93:[function(require,module,exports){
var registerComponent=require("../core/component").registerComponent,THREE=require("../lib/three"),utils=require("../utils/"),bind=utils.bind,PI_2=Math.PI/2;module.exports.Component=registerComponent("look-controls",{dependencies:["position","rotation"],schema:{enabled:{default:!0},magicWindowTrackingEnabled:{default:!0},pointerLockEnabled:{default:!1},reverseMouseDrag:{default:!1},reverseTouchDrag:{default:!1},touchEnabled:{default:!0},mouseEnabled:{default:!0}},init:function(){this.deltaYaw=0,this.previousHMDPosition=new THREE.Vector3,this.hmdQuaternion=new THREE.Quaternion,this.magicWindowAbsoluteEuler=new THREE.Euler,this.magicWindowDeltaEuler=new THREE.Euler,this.position=new THREE.Vector3,this.magicWindowObject=new THREE.Object3D,this.rotation={},this.deltaRotation={},this.savedPose=null,this.pointerLocked=!1,this.setupMouseControls(),this.bindMethods(),this.previousMouseEvent={},this.setupMagicWindowControls(),this.savedPose={position:new THREE.Vector3,rotation:new THREE.Euler},(this.el.sceneEl.is("vr-mode")||this.el.sceneEl.is("ar-mode"))&&this.onEnterVR()},setupMagicWindowControls:function(){var e,t=this.data;(utils.device.isMobile()||utils.device.isMobileDeviceRequestingDesktopSite())&&(e=this.magicWindowControls=new THREE.DeviceOrientationControls(this.magicWindowObject),"undefined"!=typeof DeviceOrientationEvent&&DeviceOrientationEvent.requestPermission&&(e.enabled=!1,this.el.sceneEl.components["device-orientation-permission-ui"].permissionGranted?e.enabled=t.magicWindowTrackingEnabled:this.el.sceneEl.addEventListener("deviceorientationpermissiongranted",function(){e.enabled=t.magicWindowTrackingEnabled})))},update:function(e){var t=this.data;t.enabled!==e.enabled&&this.updateGrabCursor(t.enabled),e&&!t.magicWindowTrackingEnabled&&e.magicWindowTrackingEnabled&&(this.magicWindowAbsoluteEuler.set(0,0,0),this.magicWindowDeltaEuler.set(0,0,0)),this.magicWindowControls&&(this.magicWindowControls.enabled=t.magicWindowTrackingEnabled),e&&!t.pointerLockEnabled!==e.pointerLockEnabled&&(this.removeEventListeners(),this.addEventListeners(),this.pointerLocked&&this.exitPointerLock())},tick:function(e){this.data.enabled&&this.updateOrientation()},play:function(){this.addEventListeners()},pause:function(){this.removeEventListeners(),this.pointerLocked&&this.exitPointerLock()},remove:function(){this.removeEventListeners(),this.pointerLocked&&this.exitPointerLock()},bindMethods:function(){this.onMouseDown=bind(this.onMouseDown,this),this.onMouseMove=bind(this.onMouseMove,this),this.onMouseUp=bind(this.onMouseUp,this),this.onTouchStart=bind(this.onTouchStart,this),this.onTouchMove=bind(this.onTouchMove,this),this.onTouchEnd=bind(this.onTouchEnd,this),this.onEnterVR=bind(this.onEnterVR,this),this.onExitVR=bind(this.onExitVR,this),this.onPointerLockChange=bind(this.onPointerLockChange,this),this.onPointerLockError=bind(this.onPointerLockError,this)},setupMouseControls:function(){this.mouseDown=!1,this.pitchObject=new THREE.Object3D,this.yawObject=new THREE.Object3D,this.yawObject.position.y=10,this.yawObject.add(this.pitchObject)},addEventListeners:function(){var e=this.el.sceneEl,t=e.canvas;if(!t)return void e.addEventListener("render-target-loaded",bind(this.addEventListeners,this));t.addEventListener("mousedown",this.onMouseDown,!1),window.addEventListener("mousemove",this.onMouseMove,!1),window.addEventListener("mouseup",this.onMouseUp,!1),t.addEventListener("touchstart",this.onTouchStart),window.addEventListener("touchmove",this.onTouchMove),window.addEventListener("touchend",this.onTouchEnd),e.addEventListener("enter-vr",this.onEnterVR),e.addEventListener("exit-vr",this.onExitVR),this.data.pointerLockEnabled&&(document.addEventListener("pointerlockchange",this.onPointerLockChange,!1),document.addEventListener("mozpointerlockchange",this.onPointerLockChange,!1),document.addEventListener("pointerlockerror",this.onPointerLockError,!1))},removeEventListeners:function(){var e=this.el.sceneEl,t=e&&e.canvas;t&&(t.removeEventListener("mousedown",this.onMouseDown),window.removeEventListener("mousemove",this.onMouseMove),window.removeEventListener("mouseup",this.onMouseUp),t.removeEventListener("touchstart",this.onTouchStart),window.removeEventListener("touchmove",this.onTouchMove),window.removeEventListener("touchend",this.onTouchEnd),e.removeEventListener("enter-vr",this.onEnterVR),e.removeEventListener("exit-vr",this.onExitVR),document.removeEventListener("pointerlockchange",this.onPointerLockChange,!1),document.removeEventListener("mozpointerlockchange",this.onPointerLockChange,!1),document.removeEventListener("pointerlockerror",this.onPointerLockError,!1))},updateOrientation:function(){var e=this.el.object3D,t=this.pitchObject,o=this.yawObject,i=this.el.sceneEl;(i.is("vr-mode")||i.is("ar-mode"))&&i.checkHeadsetConnected()||(this.updateMagicWindowOrientation(),e.rotation.x=this.magicWindowDeltaEuler.x+t.rotation.x,e.rotation.y=this.magicWindowDeltaEuler.y+o.rotation.y,e.rotation.z=this.magicWindowDeltaEuler.z)},updateMagicWindowOrientation:function(){var e=this.magicWindowAbsoluteEuler,t=this.magicWindowDeltaEuler;this.magicWindowControls&&this.magicWindowControls.enabled&&(this.magicWindowControls.update(),e.setFromQuaternion(this.magicWindowObject.quaternion,"YXZ"),this.previousMagicWindowYaw||0===e.y||(this.previousMagicWindowYaw=e.y),this.previousMagicWindowYaw&&(t.x=e.x,t.y+=e.y-this.previousMagicWindowYaw,t.z=e.z,this.previousMagicWindowYaw=e.y))},onMouseMove:function(e){var t,o,i,n=this.pitchObject,s=this.previousMouseEvent,r=this.yawObject;this.data.enabled&&(this.mouseDown||this.pointerLocked)&&(this.pointerLocked?(o=e.movementX||e.mozMovementX||0,i=e.movementY||e.mozMovementY||0):(o=e.screenX-s.screenX,i=e.screenY-s.screenY),this.previousMouseEvent.screenX=e.screenX,this.previousMouseEvent.screenY=e.screenY,t=this.data.reverseMouseDrag?1:-1,r.rotation.y+=.002*o*t,n.rotation.x+=.002*i*t,n.rotation.x=Math.max(-PI_2,Math.min(PI_2,n.rotation.x)))},onMouseDown:function(e){var t=this.el.sceneEl;if(this.data.enabled&&this.data.mouseEnabled&&(!t.is("vr-mode")&&!t.is("ar-mode")||!t.checkHeadsetConnected())&&0===e.button){var o=t&&t.canvas;this.mouseDown=!0,this.previousMouseEvent.screenX=e.screenX,this.previousMouseEvent.screenY=e.screenY,this.showGrabbingCursor(),this.data.pointerLockEnabled&&!this.pointerLocked&&(o.requestPointerLock?o.requestPointerLock():o.mozRequestPointerLock&&o.mozRequestPointerLock())}},showGrabbingCursor:function(){this.el.sceneEl.canvas.style.cursor="grabbing"},hideGrabbingCursor:function(){this.el.sceneEl.canvas.style.cursor=""},onMouseUp:function(){this.mouseDown=!1,this.hideGrabbingCursor()},onTouchStart:function(e){1!==e.touches.length||!this.data.touchEnabled||this.el.sceneEl.is("vr-mode")||this.el.sceneEl.is("ar-mode")||(this.touchStart={x:e.touches[0].pageX,y:e.touches[0].pageY},this.touchStarted=!0)},onTouchMove:function(e){var t,o,i=this.el.sceneEl.canvas,n=this.yawObject;this.touchStarted&&this.data.touchEnabled&&(o=2*Math.PI*(e.touches[0].pageX-this.touchStart.x)/i.clientWidth,t=this.data.reverseTouchDrag?1:-1,n.rotation.y-=.5*o*t,this.touchStart={x:e.touches[0].pageX,y:e.touches[0].pageY})},onTouchEnd:function(){this.touchStarted=!1},onEnterVR:function(){var e=this.el.sceneEl;e.checkHeadsetConnected()&&(this.saveCameraPose(),this.el.object3D.position.set(0,0,0),this.el.object3D.rotation.set(0,0,0),e.hasWebXR&&(this.el.object3D.matrixAutoUpdate=!1,this.el.object3D.updateMatrix()))},onExitVR:function(){this.el.sceneEl.checkHeadsetConnected()&&(this.restoreCameraPose(),this.previousHMDPosition.set(0,0,0),this.el.object3D.matrixAutoUpdate=!0)},onPointerLockChange:function(){this.pointerLocked=!(!document.pointerLockElement&&!document.mozPointerLockElement)},onPointerLockError:function(){this.pointerLocked=!1},exitPointerLock:function(){document.exitPointerLock(),this.pointerLocked=!1},updateGrabCursor:function(e){function t(){i.canvas.classList.add("a-grab-cursor")}function o(){i.canvas.classList.remove("a-grab-cursor")}var i=this.el.sceneEl;return i.canvas?e?void t():void o():void(e?i.addEventListener("render-target-loaded",t):i.addEventListener("render-target-loaded",o))},saveCameraPose:function(){var e=this.el;this.savedPose.position.copy(e.object3D.position),this.savedPose.rotation.copy(e.object3D.rotation),this.hasSavedPose=!0},restoreCameraPose:function(){var e=this.el,t=this.savedPose;this.hasSavedPose&&(e.object3D.position.copy(t.position),e.object3D.rotation.copy(t.rotation),this.hasSavedPose=!1)}});
},{"../core/component":135,"../lib/three":183,"../utils/":210}],94:[function(require,module,exports){
var bind=require("../utils/bind"),registerComponent=require("../core/component").registerComponent,trackedControlsUtils=require("../utils/tracked-controls"),checkControllerPresentAndSetup=trackedControlsUtils.checkControllerPresentAndSetup,emitIfAxesChanged=trackedControlsUtils.emitIfAxesChanged,onButtonEvent=trackedControlsUtils.onButtonEvent,GAMEPAD_ID_PREFIX="magicleap",GAMEPAD_ID_SUFFIX="-one",GAMEPAD_ID_COMPOSITE=GAMEPAD_ID_PREFIX+GAMEPAD_ID_SUFFIX,MAGICLEAP_CONTROLLER_MODEL_GLB_URL="https://cdn.aframe.io/controllers/magicleap/magicleap-one-controller.glb",INPUT_MAPPING_WEBXR={axes:{touchpad:[0,1]},buttons:["trigger","grip","touchpad","menu"]};module.exports.Component=registerComponent("magicleap-controls",{schema:{hand:{default:"none"},model:{default:!0},orientationOffset:{type:"vec3"}},mapping:INPUT_MAPPING_WEBXR,init:function(){var t=this;this.controllerPresent=!1,this.lastControllerCheck=0,this.onButtonChanged=bind(this.onButtonChanged,this),this.onButtonDown=function(e){onButtonEvent(e.detail.id,"down",t)},this.onButtonUp=function(e){onButtonEvent(e.detail.id,"up",t)},this.onButtonTouchEnd=function(e){onButtonEvent(e.detail.id,"touchend",t)},this.onButtonTouchStart=function(e){onButtonEvent(e.detail.id,"touchstart",t)},this.previousButtonValues={},this.rendererSystem=this.el.sceneEl.systems.renderer,this.bindMethods()},update:function(){var t=this.data;this.controllerIndex="right"===t.hand?0:"left"===t.hand?1:2},play:function(){this.checkIfControllerPresent(),this.addControllersUpdateListener()},pause:function(){this.removeEventListeners(),this.removeControllersUpdateListener()},bindMethods:function(){this.onModelLoaded=bind(this.onModelLoaded,this),this.onControllersUpdate=bind(this.onControllersUpdate,this),this.checkIfControllerPresent=bind(this.checkIfControllerPresent,this),this.removeControllersUpdateListener=bind(this.removeControllersUpdateListener,this),this.onAxisMoved=bind(this.onAxisMoved,this)},addEventListeners:function(){var t=this.el;t.addEventListener("buttonchanged",this.onButtonChanged),t.addEventListener("buttondown",this.onButtonDown),t.addEventListener("buttonup",this.onButtonUp),t.addEventListener("touchstart",this.onButtonTouchStart),t.addEventListener("touchend",this.onButtonTouchEnd),t.addEventListener("axismove",this.onAxisMoved),t.addEventListener("model-loaded",this.onModelLoaded),this.controllerEventsActive=!0},removeEventListeners:function(){var t=this.el;t.removeEventListener("buttonchanged",this.onButtonChanged),t.removeEventListener("buttondown",this.onButtonDown),t.removeEventListener("buttonup",this.onButtonUp),t.removeEventListener("touchstart",this.onButtonTouchStart),t.removeEventListener("touchend",this.onButtonTouchEnd),t.removeEventListener("axismove",this.onAxisMoved),t.removeEventListener("model-loaded",this.onModelLoaded),this.controllerEventsActive=!1},checkIfControllerPresent:function(){var t=this.data;checkControllerPresentAndSetup(this,GAMEPAD_ID_COMPOSITE,{index:this.controllerIndex,hand:t.hand})},injectTrackedControls:function(){var t=this.el,e=this.data;t.setAttribute("tracked-controls",{idPrefix:GAMEPAD_ID_COMPOSITE,hand:e.hand,controller:this.controllerIndex,orientationOffset:e.orientationOffset}),this.data.model&&this.el.setAttribute("gltf-model",MAGICLEAP_CONTROLLER_MODEL_GLB_URL)},addControllersUpdateListener:function(){this.el.sceneEl.addEventListener("controllersupdated",this.onControllersUpdate,!1)},removeControllersUpdateListener:function(){this.el.sceneEl.removeEventListener("controllersupdated",this.onControllersUpdate,!1)},onControllersUpdate:function(){this.checkIfControllerPresent()},onButtonChanged:function(t){var e,n=this.mapping.buttons[t.detail.id];n&&("trigger"===n&&(e=t.detail.state.value,console.log("analog value of trigger press: "+e)),this.el.emit(n+"changed",t.detail.state))},onModelLoaded:function(t){t.detail.model.scale.set(.01,.01,.01)},onAxisMoved:function(t){emitIfAxesChanged(this,this.mapping.axes,t)},updateModel:function(t,e){},setButtonColor:function(t,e){}});
},{"../core/component":135,"../utils/bind":204,"../utils/tracked-controls":219}],95:[function(require,module,exports){
function parseSide(e){switch(e){case"back":return THREE.BackSide;case"double":return THREE.DoubleSide;default:return THREE.FrontSide}}function parseVertexColors(e){switch(e){case"face":return THREE.FaceColors;case"vertex":return THREE.VertexColors;default:return THREE.NoColors}}function parseBlending(e){switch(e){case"none":return THREE.NoBlending;case"additive":return THREE.AdditiveBlending;case"subtractive":return THREE.SubtractiveBlending;case"multiply":return THREE.MultiplyBlending;default:return THREE.NormalBlending}}function disposeMaterial(e,t){e.dispose(),t.unregisterMaterial(e)}var utils=require("../utils/"),component=require("../core/component"),THREE=require("../lib/three"),shader=require("../core/shader"),error=utils.debug("components:material:error"),registerComponent=component.registerComponent,shaders=shader.shaders,shaderNames=shader.shaderNames;module.exports.Component=registerComponent("material",{schema:{alphaTest:{default:0,min:0,max:1},depthTest:{default:!0},depthWrite:{default:!0},flatShading:{default:!1},npot:{default:!1},offset:{type:"vec2",default:{x:0,y:0}},opacity:{default:1,min:0,max:1},repeat:{type:"vec2",default:{x:1,y:1}},shader:{default:"standard",oneOf:shaderNames,schemaChange:!0},side:{default:"front",oneOf:["front","back","double"]},transparent:{default:!1},vertexColors:{type:"string",default:"none",oneOf:["face","vertex"]},visible:{default:!0},blending:{default:"normal",oneOf:["none","normal","additive","subtractive","multiply"]},dithering:{default:!0}},init:function(){this.material=null},update:function(e){var t=this.data;this.shader&&t.shader===e.shader||this.updateShader(t.shader),this.shader.update(this.data),this.updateMaterial(e)},updateSchema:function(e){var t,a,r,i;a=e&&e.shader,t=this.oldData&&this.oldData.shader,i=a||t,r=shaders[i]&&shaders[i].schema,r||error("Unknown shader schema "+i),t&&a===t||(this.extendSchema(r),this.updateBehavior())},updateBehavior:function(){function e(e,t){var r;for(r in a)a[r]=e;s.shader.update(a)}var t,a,r=this.el.sceneEl,i=this.schema,s=this;this.tick=void 0,a={};for(t in i)"time"===i[t].type&&(this.tick=e,a[t]=!0);r&&(this.tick?r.addBehavior(this):r.removeBehavior(this))},updateShader:function(e){var t,a=this.data,r=shaders[e]&&shaders[e].Shader;if(!r)throw new Error("Unknown shader "+e);t=this.shader=new r,t.el=this.el,t.init(a),this.setMaterial(t.material),this.updateSchema(a)},updateMaterial:function(e){var t,a=this.data,r=this.material;r.alphaTest=a.alphaTest,r.depthTest=!1!==a.depthTest,r.depthWrite=!1!==a.depthWrite,r.opacity=a.opacity,r.flatShading=a.flatShading,r.side=parseSide(a.side),r.transparent=!1!==a.transparent||a.opacity<1,r.vertexColors=parseVertexColors(a.vertexColors),r.visible=a.visible,r.blending=parseBlending(a.blending),r.dithering=a.dithering;for(t in e)break;!t||e.alphaTest===a.alphaTest&&e.side===a.side&&e.vertexColors===a.vertexColors||(r.needsUpdate=!0)},remove:function(){var e=new THREE.MeshBasicMaterial,t=this.material,a=this.el.getObject3D("mesh");a&&(a.material=e),disposeMaterial(t,this.system)},setMaterial:function(e){var t,a=this.el,r=this.system;this.material&&disposeMaterial(this.material,r),this.material=e,r.registerMaterial(e),t=a.getObject3D("mesh"),t?t.material=e:a.addEventListener("object3dset",function t(r){"mesh"===r.detail.type&&r.target===a&&(a.getObject3D("mesh").material=e,a.removeEventListener("object3dset",t))})}});
},{"../core/component":135,"../core/shader":145,"../lib/three":183,"../utils/":210}],96:[function(require,module,exports){
var debug=require("../utils/debug"),registerComponent=require("../core/component").registerComponent,THREE=require("../lib/three"),warn=debug("components:obj-model:warn");module.exports.Component=registerComponent("obj-model",{schema:{mtl:{type:"model"},obj:{type:"model"}},init:function(){var e=this;this.model=null,this.objLoader=new THREE.OBJLoader,this.mtlLoader=new THREE.MTLLoader(this.objLoader.manager),this.mtlLoader.crossOrigin="",this.el.addEventListener("componentinitialized",function(o){e.model&&"material"===o.detail.name&&e.applyMaterial()})},update:function(){var e=this.data;e.obj&&(this.resetMesh(),this.loadObj(e.obj,e.mtl))},remove:function(){this.model&&this.resetMesh()},resetMesh:function(){this.el.removeObject3D("mesh")},loadObj:function(e,o){var t=this,r=this.el,i=this.mtlLoader,a=this.objLoader,s=this.el.sceneEl.systems.renderer,n=o.substr(0,o.lastIndexOf("/")+1);if(o)return r.hasAttribute("material")&&warn("Material component properties are ignored when a .MTL is provided"),i.setResourcePath(n),void i.load(o,function(o){o.preload(),a.setMaterials(o),a.load(e,function(e){t.model=e,t.model.traverse(function(e){if(e.isMesh){var o=e.material;o.color&&s.applyColorCorrection(o.color),o.map&&s.applyColorCorrection(o.map),o.emissive&&s.applyColorCorrection(o.emissive),o.emissiveMap&&s.applyColorCorrection(o.emissiveMap)}}),r.setObject3D("mesh",e),r.emit("model-loaded",{format:"obj",model:e})})});a.load(e,function(e){t.model=e,t.applyMaterial(),r.setObject3D("mesh",e),r.emit("model-loaded",{format:"obj",model:e})})},applyMaterial:function(){var e=this.el.components.material;e&&this.model.traverse(function(o){o instanceof THREE.Mesh&&(o.material=e.material)})}});
},{"../core/component":135,"../lib/three":183,"../utils/debug":206}],97:[function(require,module,exports){
var registerComponent=require("../core/component").registerComponent,bind=require("../utils/bind"),trackedControlsUtils=require("../utils/tracked-controls"),checkControllerPresentAndSetup=trackedControlsUtils.checkControllerPresentAndSetup,emitIfAxesChanged=trackedControlsUtils.emitIfAxesChanged,onButtonEvent=trackedControlsUtils.onButtonEvent,isWebXRAvailable=require("../utils/").device.isWebXRAvailable,GAMEPAD_ID_WEBXR="oculus-go",GAMEPAD_ID_WEBVR="Oculus Go",OCULUS_GO_CONTROLLER_MODEL_URL="https://cdn.aframe.io/controllers/oculus/go/oculus-go-controller.gltf",GAMEPAD_ID_PREFIX=isWebXRAvailable?GAMEPAD_ID_WEBXR:GAMEPAD_ID_WEBVR,INPUT_MAPPING_WEBVR={axes:{trackpad:[0,1]},buttons:["trackpad","trigger"]},INPUT_MAPPING_WEBXR={axes:{touchpad:[0,1]},buttons:["trigger","none","touchpad"]},INPUT_MAPPING=isWebXRAvailable?INPUT_MAPPING_WEBXR:INPUT_MAPPING_WEBVR;module.exports.Component=registerComponent("oculus-go-controls",{schema:{hand:{default:""},buttonColor:{type:"color",default:"#FFFFFF"},buttonTouchedColor:{type:"color",default:"#BBBBBB"},buttonHighlightColor:{type:"color",default:"#7A7A7A"},model:{default:!0},orientationOffset:{type:"vec3"},armModel:{default:!0}},mapping:INPUT_MAPPING,bindMethods:function(){this.onModelLoaded=bind(this.onModelLoaded,this),this.onControllersUpdate=bind(this.onControllersUpdate,this),this.checkIfControllerPresent=bind(this.checkIfControllerPresent,this),this.removeControllersUpdateListener=bind(this.removeControllersUpdateListener,this),this.onAxisMoved=bind(this.onAxisMoved,this)},init:function(){var t=this;this.onButtonChanged=bind(this.onButtonChanged,this),this.onButtonDown=function(e){onButtonEvent(e.detail.id,"down",t)},this.onButtonUp=function(e){onButtonEvent(e.detail.id,"up",t)},this.onButtonTouchStart=function(e){onButtonEvent(e.detail.id,"touchstart",t)},this.onButtonTouchEnd=function(e){onButtonEvent(e.detail.id,"touchend",t)},this.controllerPresent=!1,this.lastControllerCheck=0,this.rendererSystem=this.el.sceneEl.systems.renderer,this.bindMethods()},addEventListeners:function(){var t=this.el;t.addEventListener("buttonchanged",this.onButtonChanged),t.addEventListener("buttondown",this.onButtonDown),t.addEventListener("buttonup",this.onButtonUp),t.addEventListener("touchstart",this.onButtonTouchStart),t.addEventListener("touchend",this.onButtonTouchEnd),t.addEventListener("model-loaded",this.onModelLoaded),t.addEventListener("axismove",this.onAxisMoved),this.controllerEventsActive=!0},removeEventListeners:function(){var t=this.el;t.removeEventListener("buttonchanged",this.onButtonChanged),t.removeEventListener("buttondown",this.onButtonDown),t.removeEventListener("buttonup",this.onButtonUp),t.removeEventListener("touchstart",this.onButtonTouchStart),t.removeEventListener("touchend",this.onButtonTouchEnd),t.removeEventListener("model-loaded",this.onModelLoaded),t.removeEventListener("axismove",this.onAxisMoved),this.controllerEventsActive=!1},checkIfControllerPresent:function(){checkControllerPresentAndSetup(this,GAMEPAD_ID_PREFIX,this.data.hand?{hand:this.data.hand}:{})},play:function(){this.checkIfControllerPresent(),this.addControllersUpdateListener()},pause:function(){this.removeEventListeners(),this.removeControllersUpdateListener()},injectTrackedControls:function(){var t=this.el,e=this.data;t.setAttribute("tracked-controls",{armModel:e.armModel,hand:e.hand,idPrefix:GAMEPAD_ID_PREFIX,orientationOffset:e.orientationOffset}),this.data.model&&this.el.setAttribute("gltf-model",OCULUS_GO_CONTROLLER_MODEL_URL)},addControllersUpdateListener:function(){this.el.sceneEl.addEventListener("controllersupdated",this.onControllersUpdate,!1)},removeControllersUpdateListener:function(){this.el.sceneEl.removeEventListener("controllersupdated",this.onControllersUpdate,!1)},onControllersUpdate:function(){this.checkIfControllerPresent()},onModelLoaded:function(t){var e,o=t.detail.model;this.data.model&&(e=this.buttonMeshes={},e.trigger=o.getObjectByName("oculus_go_button_trigger"),e.trackpad=o.getObjectByName("oculus_go_touchpad"),e.touchpad=o.getObjectByName("oculus_go_touchpad"))},onButtonChanged:function(t){var e=this.mapping.buttons[t.detail.id];e&&this.el.emit(e+"changed",t.detail.state)},onAxisMoved:function(t){emitIfAxesChanged(this,this.mapping.axes,t)},updateModel:function(t,e){this.data.model&&this.updateButtonModel(t,e)},updateButtonModel:function(t,e){var o=this.buttonMeshes;if(o&&o[t]){var n,i;switch(e){case"down":n=this.data.buttonHighlightColor;break;case"touchstart":n=this.data.buttonTouchedColor;break;default:n=this.data.buttonColor}i=o[t],i.material.color.set(n),this.rendererSystem.applyColorCorrection(i.material.color)}}});
},{"../core/component":135,"../utils/":210,"../utils/bind":204,"../utils/tracked-controls":219}],98:[function(require,module,exports){
var bind=require("../utils/bind"),registerComponent=require("../core/component").registerComponent,THREE=require("../lib/three"),trackedControlsUtils=require("../utils/tracked-controls"),checkControllerPresentAndSetup=trackedControlsUtils.checkControllerPresentAndSetup,emitIfAxesChanged=trackedControlsUtils.emitIfAxesChanged,onButtonEvent=trackedControlsUtils.onButtonEvent,isWebXRAvailable=require("../utils/").device.isWebXRAvailable,GAMEPAD_ID_WEBXR="oculus-touch",GAMEPAD_ID_WEBVR="Oculus Touch",GAMEPAD_ID_PREFIX=isWebXRAvailable?GAMEPAD_ID_WEBXR:GAMEPAD_ID_WEBVR,TOUCH_CONTROLLER_MODEL_BASE_URL="https://cdn.aframe.io/controllers/oculus/oculus-touch-controller-",OCULUS_TOUCH_WEBVR={left:{modelUrl:TOUCH_CONTROLLER_MODEL_BASE_URL+"left.gltf",rayOrigin:{origin:{x:.008,y:-.01,z:0},direction:{x:0,y:-.8,z:-1}},modelPivotOffset:new THREE.Vector3(-.005,.003,-.055),modelPivotRotation:new THREE.Euler(0,0,0)},right:{modelUrl:TOUCH_CONTROLLER_MODEL_BASE_URL+"right.gltf",rayOrigin:{origin:{x:-.008,y:-.01,z:0},direction:{x:0,y:-.8,z:-1}},modelPivotOffset:new THREE.Vector3(.005,.003,-.055),modelPivotRotation:new THREE.Euler(0,0,0)}},OCULUS_TOUCH_WEBXR={left:{modelUrl:TOUCH_CONTROLLER_MODEL_BASE_URL+"left.gltf",rayOrigin:{origin:{x:.002,y:-.005,z:-.03},direction:{x:0,y:-.8,z:-1}},modelPivotOffset:new THREE.Vector3(-.005,.036,-.037),modelPivotRotation:new THREE.Euler(Math.PI/4.5,0,0)},right:{modelUrl:TOUCH_CONTROLLER_MODEL_BASE_URL+"right.gltf",rayOrigin:{origin:{x:-.002,y:-.005,z:-.03},direction:{x:0,y:-.8,z:-1}},modelPivotOffset:new THREE.Vector3(.005,.036,-.037),modelPivotRotation:new THREE.Euler(Math.PI/4.5,0,0)}},OCULUS_TOUCH_CONFIG=isWebXRAvailable?OCULUS_TOUCH_WEBXR:OCULUS_TOUCH_WEBVR,CONTROLLER_DEFAULT="oculus-touch",CONTROLLER_PROPERTIES={"oculus-touch":OCULUS_TOUCH_CONFIG,"oculus-touch-v2":{left:{modelUrl:TOUCH_CONTROLLER_MODEL_BASE_URL+"gen2-left.gltf",rayOrigin:{origin:{x:-.01,y:0,z:-.02},direction:{x:0,y:-.5,z:-1}},modelPivotOffset:new THREE.Vector3(0,0,0),modelPivotRotation:new THREE.Euler(0,0,0)},right:{modelUrl:TOUCH_CONTROLLER_MODEL_BASE_URL+"gen2-right.gltf",rayOrigin:{origin:{x:.01,y:0,z:-.02},direction:{x:0,y:-.5,z:-1}},modelPivotOffset:new THREE.Vector3(0,0,0),modelPivotRotation:new THREE.Euler(0,0,0)}},"oculus-touch-v3":{left:{modelUrl:TOUCH_CONTROLLER_MODEL_BASE_URL+"v3-left.glb",rayOrigin:{origin:{x:.015,y:.005,z:0},direction:{x:0,y:0,z:-1}},modelPivotOffset:new THREE.Vector3(.01,-.01,.05),modelPivotRotation:new THREE.Euler(Math.PI/4,0,0)},right:{modelUrl:TOUCH_CONTROLLER_MODEL_BASE_URL+"v3-right.glb",rayOrigin:{origin:{x:-.015,y:.005,z:0},direction:{x:0,y:0,z:-1}},modelPivotOffset:new THREE.Vector3(-.01,-.01,.05),modelPivotRotation:new THREE.Euler(Math.PI/4,0,0)}}},INPUT_MAPPING_WEBVR={left:{axes:{thumbstick:[0,1]},buttons:["thumbstick","trigger","grip","xbutton","ybutton","surface"]},right:{axes:{thumbstick:[0,1]},buttons:["thumbstick","trigger","grip","abutton","bbutton","surface"]}},INPUT_MAPPING_WEBXR={left:{axes:{thumbstick:[2,3]},buttons:["trigger","grip","none","thumbstick","xbutton","ybutton","surface"]},right:{axes:{thumbstick:[2,3]},buttons:["trigger","grip","none","thumbstick","abutton","bbutton","surface"]}},INPUT_MAPPING=isWebXRAvailable?INPUT_MAPPING_WEBXR:INPUT_MAPPING_WEBVR;module.exports.Component=registerComponent("oculus-touch-controls",{schema:{hand:{default:"left"},buttonColor:{type:"color",default:"#999"},buttonTouchColor:{type:"color",default:"#8AB"},buttonHighlightColor:{type:"color",default:"#2DF"},model:{default:!0},controllerType:{default:"auto",oneOf:["auto","oculus-touch","oculus-touch-v2","oculus-touch-v3"]},orientationOffset:{type:"vec3",default:{x:43,y:0,z:0}}},mapping:INPUT_MAPPING,bindMethods:function(){this.onModelLoaded=bind(this.onModelLoaded,this),this.onControllersUpdate=bind(this.onControllersUpdate,this),this.checkIfControllerPresent=bind(this.checkIfControllerPresent,this),this.onAxisMoved=bind(this.onAxisMoved,this)},init:function(){var t=this;this.onButtonChanged=bind(this.onButtonChanged,this),this.onButtonDown=function(e){onButtonEvent(e.detail.id,"down",t,t.data.hand)},this.onButtonUp=function(e){onButtonEvent(e.detail.id,"up",t,t.data.hand)},this.onButtonTouchStart=function(e){onButtonEvent(e.detail.id,"touchstart",t,t.data.hand)},this.onButtonTouchEnd=function(e){onButtonEvent(e.detail.id,"touchend",t,t.data.hand)},this.controllerPresent=!1,this.lastControllerCheck=0,this.previousButtonValues={},this.rendererSystem=this.el.sceneEl.systems.renderer,this.bindMethods()},addEventListeners:function(){var t=this.el;t.addEventListener("buttonchanged",this.onButtonChanged),t.addEventListener("buttondown",this.onButtonDown),t.addEventListener("buttonup",this.onButtonUp),t.addEventListener("touchstart",this.onButtonTouchStart),t.addEventListener("touchend",this.onButtonTouchEnd),t.addEventListener("axismove",this.onAxisMoved),t.addEventListener("model-loaded",this.onModelLoaded),this.controllerEventsActive=!0},removeEventListeners:function(){var t=this.el;t.removeEventListener("buttonchanged",this.onButtonChanged),t.removeEventListener("buttondown",this.onButtonDown),t.removeEventListener("buttonup",this.onButtonUp),t.removeEventListener("touchstart",this.onButtonTouchStart),t.removeEventListener("touchend",this.onButtonTouchEnd),t.removeEventListener("axismove",this.onAxisMoved),t.removeEventListener("model-loaded",this.onModelLoaded),this.controllerEventsActive=!1},checkIfControllerPresent:function(){checkControllerPresentAndSetup(this,GAMEPAD_ID_PREFIX,{hand:this.data.hand})},play:function(){this.checkIfControllerPresent(),this.addControllersUpdateListener()},pause:function(){this.removeEventListeners(),this.removeControllersUpdateListener()},loadModel:function(t){var e,o=this.data;if(o.model){if(this.displayModel=CONTROLLER_PROPERTIES[o.controllerType]||CONTROLLER_PROPERTIES[CONTROLLER_DEFAULT],"auto"===o.controllerType){var n=this.el.sceneEl.systems["tracked-controls-webvr"];if(n&&n.vrDisplay){/^Oculus Quest$/.test(n.vrDisplay.displayName)&&(this.displayModel=CONTROLLER_PROPERTIES["oculus-touch-v2"])}else e=CONTROLLER_DEFAULT,e=-1!==t.profiles.indexOf("oculus-touch-v2")?"oculus-touch-v2":e,e=-1!==t.profiles.indexOf("oculus-touch-v3")?"oculus-touch-v3":e,this.displayModel=CONTROLLER_PROPERTIES[e]}var i=this.displayModel[o.hand].modelUrl;this.el.setAttribute("gltf-model",i)}},injectTrackedControls:function(t){var e=this.data,o=GAMEPAD_ID_WEBXR,n="right"===e.hand?"Oculus Touch (Right)":"Oculus Touch (Left)",i=isWebXRAvailable?o:n;this.el.setAttribute("tracked-controls",{id:i,hand:e.hand,orientationOffset:e.orientationOffset,handTrackingEnabled:!1}),this.loadModel(t)},addControllersUpdateListener:function(){this.el.sceneEl.addEventListener("controllersupdated",this.onControllersUpdate,!1)},removeControllersUpdateListener:function(){this.el.sceneEl.removeEventListener("controllersupdated",this.onControllersUpdate,!1)},onControllersUpdate:function(){this.checkIfControllerPresent()},onButtonChanged:function(t){var e,o=this.mapping[this.data.hand].buttons[t.detail.id],n=this.buttonMeshes;o&&("trigger"!==o&&"grip"!==o||(e=t.detail.state.value),n&&("trigger"===o&&n.trigger&&(n.trigger.rotation.x=this.originalXRotationTrigger-e*(Math.PI/26)),"grip"===o&&n.grip&&(n.grip.position.x=this.originalXPositionGrip+("left"===this.data.hand?-1:1)*e*.004)),this.el.emit(o+"changed",t.detail.state))},onModelLoaded:function(t){var e,o=this.controllerObject3D=t.detail.model;this.data.model&&(e=this.buttonMeshes={},e.grip=o.getObjectByName("buttonHand"),this.originalXPositionGrip=e.grip&&e.grip.position.x,e.thumbstick=o.getObjectByName("stick"),e.trigger=o.getObjectByName("buttonTrigger"),this.originalXRotationTrigger=e.trigger&&e.trigger.rotation.x,e.xbutton=o.getObjectByName("buttonX"),e.abutton=o.getObjectByName("buttonA"),e.ybutton=o.getObjectByName("buttonY"),e.bbutton=o.getObjectByName("buttonB"),o.position.copy(this.displayModel[this.data.hand].modelPivotOffset),o.rotation.copy(this.displayModel[this.data.hand].modelPivotRotation),this.el.emit("controllermodelready",{name:"oculus-touch-controls",model:this.data.model,rayOrigin:this.displayModel[this.data.hand].rayOrigin}))},onAxisMoved:function(t){emitIfAxesChanged(this,this.mapping[this.data.hand].axes,t)},updateModel:function(t,e){this.data.model&&this.updateButtonModel(t,e)},updateButtonModel:function(t,e){var o,n="up"===e||"touchend"===e?this.data.buttonColor:"touchstart"===e?this.data.buttonTouchColor:this.data.buttonHighlightColor,i=this.buttonMeshes;this.data.model&&i&&i[t]&&(o=i[t],o.material.color.set(n),this.rendererSystem.applyColorCorrection(o.material.color))}});
},{"../core/component":135,"../lib/three":183,"../utils/":210,"../utils/bind":204,"../utils/tracked-controls":219}],99:[function(require,module,exports){
var registerComponent=require("../core/component").registerComponent;module.exports.Component=registerComponent("position",{schema:{type:"vec3"},update:function(){var e=this.el.object3D,o=this.data;e.position.set(o.x,o.y,o.z)},remove:function(){this.el.object3D.position.set(0,0,0)}});
},{"../core/component":135}],100:[function(require,module,exports){
function copyArray(e,t){var i;for(e.length=t.length,i=0;i<t.length;i++)e[i]=t[i]}var registerComponent=require("../core/component").registerComponent,THREE=require("../lib/three"),utils=require("../utils/"),warn=utils.debug("components:raycaster:warn"),OBSERVER_SELECTOR_RE=/^[\w\s-.,[\]#]*$/,OBSERVER_CONFIG={childList:!0,attributes:!0,subtree:!0},EVENTS={INTERSECT:"raycaster-intersected",INTERSECTION:"raycaster-intersection",INTERSECT_CLEAR:"raycaster-intersected-cleared",INTERSECTION_CLEAR:"raycaster-intersection-cleared"};module.exports.Component=registerComponent("raycaster",{schema:{autoRefresh:{default:!0},direction:{type:"vec3",default:{x:0,y:0,z:-1}},enabled:{default:!0},far:{default:1e3},interval:{default:0},near:{default:0},objects:{default:""},origin:{type:"vec3"},showLine:{default:!1},lineColor:{default:"white"},lineOpacity:{default:1},useWorldCoordinates:{default:!1}},multiple:!0,init:function(){this.clearedIntersectedEls=[],this.unitLineEndVec3=new THREE.Vector3,this.intersectedEls=[],this.intersections=[],this.newIntersectedEls=[],this.newIntersections=[],this.objects=[],this.prevCheckTime=void 0,this.prevIntersectedEls=[],this.rawIntersections=[],this.raycaster=new THREE.Raycaster,this.updateOriginDirection(),this.setDirty=this.setDirty.bind(this),this.updateLine=this.updateLine.bind(this),this.observer=new MutationObserver(this.setDirty),this.dirty=!0,this.lineEndVec3=new THREE.Vector3,this.otherLineEndVec3=new THREE.Vector3,this.lineData={end:this.lineEndVec3},this.getIntersection=this.getIntersection.bind(this),this.intersectedDetail={el:this.el,getIntersection:this.getIntersection},this.intersectedClearedDetail={el:this.el},this.intersectionClearedDetail={clearedEls:this.clearedIntersectedEls},this.intersectionDetail={}},update:function(e){var t=this.data,i=this.el,s=this.raycaster;s.far=t.far,s.near=t.near,!t.showLine||t.far===e.far&&t.origin===e.origin&&t.direction===e.direction&&e.showLine||(this.unitLineEndVec3.copy(t.origin).add(t.direction).normalize(),this.drawLine()),!t.showLine&&e.showLine&&i.removeAttribute("line"),t.objects===e.objects||OBSERVER_SELECTOR_RE.test(t.objects)||warn('[raycaster] Selector "'+t.objects+'" may not update automatically with DOM changes.'),t.objects||warn('[raycaster] For performance, please define raycaster.objects when using raycaster or cursor components to whitelist which entities to intersect with. e.g., raycaster="objects: [data-raycastable]".'),t.autoRefresh!==e.autoRefresh&&i.isPlaying&&(t.autoRefresh?this.addEventListeners():this.removeEventListeners()),e.enabled&&!t.enabled&&this.clearAllIntersections(),this.setDirty()},play:function(){this.addEventListeners()},pause:function(){this.removeEventListeners()},remove:function(){this.data.showLine&&this.el.removeAttribute("line"),this.clearAllIntersections()},addEventListeners:function(){this.data.autoRefresh&&(this.observer.observe(this.el.sceneEl,OBSERVER_CONFIG),this.el.sceneEl.addEventListener("object3dset",this.setDirty),this.el.sceneEl.addEventListener("object3dremove",this.setDirty))},removeEventListeners:function(){this.observer.disconnect(),this.el.sceneEl.removeEventListener("object3dset",this.setDirty),this.el.sceneEl.removeEventListener("object3dremove",this.setDirty)},setDirty:function(){this.dirty=!0},refreshObjects:function(){var e,t=this.data;e=t.objects?this.el.sceneEl.querySelectorAll(t.objects):this.el.sceneEl.querySelectorAll("*"),this.objects=this.flattenObject3DMaps(e),this.dirty=!1},tock:function(e){var t=this.data,i=this.prevCheckTime;t.enabled&&(i&&e-i<t.interval||(this.prevCheckTime=e,this.checkIntersections()))},checkIntersections:function(){var e,t,i=this.clearedIntersectedEls,s=this.el,n=this.data,r=this.intersectedEls,c=this.intersections,o=this.newIntersectedEls,a=this.newIntersections,h=this.prevIntersectedEls,l=this.rawIntersections;for(this.dirty&&this.refreshObjects(),copyArray(this.prevIntersectedEls,this.intersectedEls),this.updateOriginDirection(),l.length=0,this.raycaster.intersectObjects(this.objects,!0,l),c.length=0,r.length=0,e=0;e<l.length;e++)t=l[e],n.showLine&&t.object===s.getObject3D("line")||t.object.el&&(c.push(t),r.push(t.object.el));for(a.length=0,o.length=0,e=0;e<c.length;e++)-1===h.indexOf(c[e].object.el)&&(a.push(c[e]),o.push(c[e].object.el));for(i.length=0,e=0;e<h.length;e++)-1===r.indexOf(h[e])&&(h[e].emit(EVENTS.INTERSECT_CLEAR,this.intersectedClearedDetail),i.push(h[e]));for(i.length&&s.emit(EVENTS.INTERSECTION_CLEAR,this.intersectionClearedDetail),e=0;e<o.length;e++)o[e].emit(EVENTS.INTERSECT,this.intersectedDetail);a.length&&(this.intersectionDetail.els=o,this.intersectionDetail.intersections=a,s.emit(EVENTS.INTERSECTION,this.intersectionDetail)),n.showLine&&setTimeout(this.updateLine)},updateLine:function(){var e,t=this.el,i=this.intersections;i.length&&(e=i[0].object.el===t&&i[1]?i[1].distance:i[0].distance),this.drawLine(e)},getIntersection:function(e){var t,i;for(t=0;t<this.intersections.length;t++)if(i=this.intersections[t],i.object.el===e)return i;return null},updateOriginDirection:function(){var e=new THREE.Vector3,t=new THREE.Vector3;return function(){var i=this.el,s=this.data;if(s.useWorldCoordinates)return void this.raycaster.set(s.origin,s.direction);i.object3D.updateMatrixWorld(),t.setFromMatrixPosition(i.object3D.matrixWorld),0===s.origin.x&&0===s.origin.y&&0===s.origin.z||(t=i.object3D.localToWorld(t.copy(s.origin))),e.copy(s.direction).transformDirection(i.object3D.matrixWorld).normalize(),this.raycaster.set(t,e)}}(),drawLine:function(e){var t,i=this.data,s=this.el;t=this.lineData.end===this.lineEndVec3?this.otherLineEndVec3:this.lineEndVec3,void 0===e&&(e=i.far===1/0?1e3:i.far),this.lineData.start=i.origin,this.lineData.end=t.copy(this.unitLineEndVec3).multiplyScalar(e),this.lineData.color=i.lineColor,this.lineData.opacity=i.lineOpacity,s.setAttribute("line",this.lineData)},flattenObject3DMaps:function(e){var t,i,s=this.objects;for(s.length=0,i=0;i<e.length;i++)if(e[i].isEntity&&e[i].object3D)for(t in e[i].object3DMap)s.push(e[i].getObject3D(t));return s},clearAllIntersections:function(){var e;for(e=0;e<this.intersectedEls.length;e++)this.intersectedEls[e].emit(EVENTS.INTERSECT_CLEAR,this.intersectedClearedDetail);copyArray(this.clearedIntersectedEls,this.intersectedEls),this.intersectedEls.length=0,this.intersections.length=0,this.el.emit(EVENTS.INTERSECTION_CLEAR,this.intersectionClearedDetail)}});
},{"../core/component":135,"../lib/three":183,"../utils/":210}],101:[function(require,module,exports){
var degToRad=require("../lib/three").Math.degToRad,registerComponent=require("../core/component").registerComponent;module.exports.Component=registerComponent("rotation",{schema:{type:"vec3"},update:function(){var e=this.data,o=this.el.object3D;o.rotation.set(degToRad(e.x),degToRad(e.y),degToRad(e.z)),o.rotation.order="YXZ"},remove:function(){this.el.object3D.rotation.set(0,0,0)}});
},{"../core/component":135,"../lib/three":183}],102:[function(require,module,exports){
var registerComponent=require("../core/component").registerComponent,zeroScale=1e-5;module.exports.Component=registerComponent("scale",{schema:{type:"vec3",default:{x:1,y:1,z:1}},update:function(){var e=this.data,o=this.el.object3D,t=0===e.x?zeroScale:e.x,r=0===e.y?zeroScale:e.y,c=0===e.z?zeroScale:e.z;o.scale.set(t,r,c)},remove:function(){this.el.object3D.scale.set(1,1,1)}});
},{"../core/component":135}],103:[function(require,module,exports){
function HitTest(t,e){this.renderer=t,this.xrHitTestSource=null,t.xr.addEventListener("sessionend",function(){this.xrHitTestSource=null}.bind(this)),t.xr.addEventListener("sessionstart",function(){this.sessionStart(e)}.bind(this)),this.renderer.xr.isPresenting&&this.sessionStart(e)}function warnAboutHitTest(t){console.warn(t.message),console.warn('Cannot requestHitTestSource Are you missing: webxr="optionalFeatures: hit-test;" from <a-scene>?')}var arrowURL="data:image/webp;base64,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",register=require("../../core/component").registerComponent,THREE=require("../../lib/three"),CAM_LAYER=21,applyPose=function(){function t(t,i,a){i.position.copy(t.transform.position),i.quaternion.copy(t.transform.orientation),s.copy(a),e.copy(t.transform.orientation),s.applyQuaternion(e),i.position.sub(s)}var e=new THREE.Quaternion,s=new THREE.Vector3;return t}();applyPose.tempFakePose={transform:{orientation:new THREE.Quaternion,position:new THREE.Vector3}},HitTest.prototype.previousFrameAnchors=new Set,HitTest.prototype.anchorToObject3D=new Map,HitTest.prototype.sessionStart=function(t){if(this.session=this.renderer.xr.getSession(),!("requestHitTestSource"in this.session))return void warnAboutHitTest({message:"No requestHitTestSource on the session."});t.space?this.session.requestHitTestSource(t).then(function(t){this.xrHitTestSource=t}.bind(this)).catch(warnAboutHitTest):t.profile&&this.session.requestHitTestSourceForTransientInput(t).then(function(t){this.xrHitTestSource=t,this.transient=!0}.bind(this)).catch(warnAboutHitTest)},HitTest.prototype.anchorFromLastHitTestResult=function(t,e){var s=this.lastHitTest;if(s){var i={object3D:t,offset:e};Array.from(this.anchorToObject3D.entries()).forEach(function(e){var s=e[1].object3D,i=e[0];s===t&&(this.anchorToObject3D.delete(i),i.delete())}.bind(this)),s.createAnchor&&s.createAnchor().then(function(t){this.anchorToObject3D.set(t,i)}.bind(this)).catch(function(t){console.warn(t.message),console.warn('Cannot create anchor, are you missing: webxr="optionalFeatures: anchors;" from <a-scene>?')})}},HitTest.prototype.doHit=function(t){if(this.renderer.xr.isPresenting){var e,s,i=this.renderer.xr.getReferenceSpace(),a=t.getViewerPose(i);return this.xrHitTestSource&&a?this.transient?(e=t.getHitTestResultsForTransientInput(this.xrHitTestSource),e.length>0&&(s=e[0].results,s.length>0&&(this.lastHitTest=s[0],s[0].getPose(i)))):(e=t.getHitTestResults(this.xrHitTestSource),e.length>0&&(this.lastHitTest=e[0],e[0].getPose(i))):void 0}},HitTest.updateAnchorPoses=function(t,e){var s=t.trackedAnchors||HitTest.prototype.previousFrameAnchors;HitTest.prototype.previousFrameAnchors.forEach(function(t){s.has(t)||HitTest.prototype.anchorToObject3D.delete(t)}),s.forEach(function(s){var i,a,o,r;try{i=t.getPose(s.anchorSpace,e)}catch(t){}i&&(a=HitTest.prototype.anchorToObject3D.get(s),o=a.offset,r=a.object3D,applyPose(i,r,o))})};var hitTestCache;module.exports.Component=register("ar-hit-test",{schema:{target:{type:"selector"},enabled:{default:!0},src:{default:arrowURL,type:"map"},type:{default:"footprint",oneOf:["footprint","map"]},footprintDepth:{default:.1},mapSize:{type:"vec2",default:{x:.5,y:.5}}},init:function(){this.hitTest=null,this.imageDataArray=new Uint8ClampedArray(1048576),this.imageData=new ImageData(this.imageDataArray,512,512),this.textureCache=new Map,this.orthoCam=new THREE.OrthographicCamera,this.orthoCam.layers.set(CAM_LAYER),this.textureTarget=new THREE.WebGLRenderTarget(512,512,{}),this.basicMaterial=new THREE.MeshBasicMaterial({color:0,side:THREE.DoubleSide}),this.canvas=document.createElement("canvas"),this.context=this.canvas.getContext("2d"),this.context.imageSmoothingEnabled=!1,this.canvas.width=512,this.canvas.height=512,this.canvasTexture=new THREE.CanvasTexture(this.canvas,{alpha:!0}),this.canvasTexture.flipY=!1;var t=this.el.getAttribute("webxr"),e=t.optionalFeatures;e.includes("hit-test")&&e.includes("anchors")||(e.push("hit-test"),e.push("anchors"),this.el.setAttribute("webxr",t)),this.el.sceneEl.renderer.xr.addEventListener("sessionend",function(){this.hitTest=null}.bind(this)),this.el.sceneEl.renderer.xr.addEventListener("sessionstart",function(){var t=this.el.sceneEl.renderer,e=this.session=t.xr.getSession();this.hasPosedOnce=!1,this.bboxMesh.visible=!1,hitTestCache||(hitTestCache=new Map),e.requestReferenceSpace("viewer").then(function(e){this.hitTest=new HitTest(t,{space:e}),hitTestCache.set(e,this.hitTest),this.el.emit("ar-hit-test-start")}.bind(this));var s=new HitTest(t,{profile:"generic-touchscreen"});e.addEventListener("selectstart",function(e){if(!0===this.data.enabled){var i=e.inputSource;this.bboxMesh.visible=!0,!0===this.hasPosedOnce&&(this.el.emit("ar-hit-test-select-start",{inputSource:i,position:this.bboxMesh.position,orientation:this.bboxMesh.quaternion}),"generic-touchscreen"===i.profiles[0]?this.hitTest=s:(this.hitTest=hitTestCache.get(i)||new HitTest(t,{space:i.targetRaySpace}),hitTestCache.set(i,this.hitTest)))}}.bind(this)),e.addEventListener("selectend",function(t){if(!this.hitTest||!0!==this.data.enabled)return void(this.hitTest=null);var e,s=t.inputSource;!0===this.hasPosedOnce&&(this.bboxMesh.visible=!1,this.data.target&&(e=this.data.target.object3D)&&(applyPose.tempFakePose.transform.position.copy(this.bboxMesh.position),applyPose.tempFakePose.transform.orientation.copy(this.bboxMesh.quaternion),applyPose(applyPose.tempFakePose,e,this.bboxOffset),e.visible=!0,this.hitTest.anchorFromLastHitTestResult(e,this.bboxOffset)),this.el.emit("ar-hit-test-select",{inputSource:s,position:this.bboxMesh.position,orientation:this.bboxMesh.quaternion})),this.hitTest=null}.bind(this))}.bind(this)),this.bboxOffset=new THREE.Vector3,this.update=this.update.bind(this),this.makeBBox()},update:function(){this.data.target&&(this.data.target.object3D?(this.data.target.addEventListener("model-loaded",this.update),this.data.target.object3D.layers.enable(CAM_LAYER),this.data.target.object3D.traverse(function(t){t.layers.enable(CAM_LAYER)})):this.data.target.addEventListener("loaded",this.update,{once:!0})),this.bboxNeedsUpdate=!0},makeBBox:function(){var t=new THREE.PlaneGeometry(1,1),e=new THREE.MeshBasicMaterial({transparent:!0,color:16777215});t.rotateX(-Math.PI/2),t.rotateY(-Math.PI/2),this.bbox=new THREE.Box3,this.bboxMesh=new THREE.Mesh(t,e),this.el.setObject3D("ar-hit-test",this.bboxMesh),this.bboxMesh.visible=!1},updateFootprint:function(){var t,e,s,i=this.el.sceneEl.renderer,a=i.xr.enabled;this.bboxMesh.material.map=this.canvasTexture,this.bboxMesh.material.needsUpdate=!0,this.orthoCam.rotation.set(-Math.PI/2,0,-Math.PI/2),this.orthoCam.position.copy(this.bboxMesh.position),this.orthoCam.position.y-=this.bboxMesh.scale.y/2,this.orthoCam.near=.1,this.orthoCam.far=this.orthoCam.near+this.data.footprintDepth*this.bboxMesh.scale.y,this.orthoCam.position.y+=this.orthoCam.far,this.orthoCam.right=this.bboxMesh.scale.z/2,this.orthoCam.left=-this.bboxMesh.scale.z/2,this.orthoCam.top=this.bboxMesh.scale.x/2,this.orthoCam.bottom=-this.bboxMesh.scale.x/2,this.orthoCam.updateProjectionMatrix(),e=i.getRenderTarget(),i.setRenderTarget(this.textureTarget),i.xr.enabled=!1,s=this.el.object3D.background,this.el.object3D.overrideMaterial=this.basicMaterial,this.el.object3D.background=null,i.render(this.el.object3D,this.orthoCam),this.el.object3D.background=s,this.el.object3D.overrideMaterial=null,i.xr.enabled=a,i.setRenderTarget(e),i.readRenderTargetPixels(this.textureTarget,0,0,512,512,this.imageDataArray),this.context.putImageData(this.imageData,0,0),this.context.shadowColor="white",this.context.shadowBlur=10,this.context.drawImage(this.canvas,0,0),t=this.context.getImageData(0,0,512,512);for(var o=0;o<262144;o++)0!==t.data[4*o+3]&&255!==t.data[4*o+3]&&(t.data[4*o+3]=128);this.context.putImageData(t,0,0),this.canvasTexture.needsUpdate=!0},tick:function(){var t,e=this.el.sceneEl.frame,s=this.el.sceneEl.renderer;if(e&&HitTest.updateAnchorPoses(e,s.xr.getReferenceSpace()),this.bboxNeedsUpdate){if(this.bboxNeedsUpdate=!1,!this.data.target||"map"===this.data.type){var i;this.textureCache.has(this.data.src)?i=this.textureCache.get(this.data.src):(i=(new THREE.TextureLoader).load(this.data.src),this.textureCache.set(this.data.src,i)),this.bboxMesh.material.map=i,this.bboxMesh.material.needsUpdate=!0}this.data.target&&this.data.target.object3D?(this.bbox.setFromObject(this.data.target.object3D),this.bbox.getCenter(this.bboxMesh.position),this.bbox.getSize(this.bboxMesh.scale),"footprint"===this.data.type&&(this.bboxMesh.scale.x*=1.04,this.bboxMesh.scale.z*=1.04,this.updateFootprint()),this.bboxMesh.position.y-=this.bboxMesh.scale.y/2,this.bboxOffset.copy(this.bboxMesh.position),this.bboxOffset.sub(this.data.target.object3D.position)):this.bboxMesh.scale.set(this.data.mapSize.x,1,this.data.mapSize.y)}this.hitTest&&(t=this.hitTest.doHit(e))&&(!0!==this.hasPosedOnce&&(this.hasPosedOnce=!0,this.el.emit("ar-hit-test-achieved")),this.bboxMesh.visible=!0,this.bboxMesh.position.copy(t.transform.position),this.bboxMesh.quaternion.copy(t.transform.orientation))}});
},{"../../core/component":135,"../../lib/three":183}],104:[function(require,module,exports){
function updateLights(e,t,i,n){var r=Math.max(1,Math.max(e.primaryLightIntensity.x,Math.max(e.primaryLightIntensity.y,e.primaryLightIntensity.z)));t.sh.fromArray(e.sphericalHarmonicsCoefficients),t.intensity=1,i.color.setRGB(e.primaryLightIntensity.x/r,e.primaryLightIntensity.y/r,e.primaryLightIntensity.z/r),i.intensity=r,n.copy(e.primaryLightDirection)}var register=require("../../core/component").registerComponent,COMPONENTS=require("../../core/component").components;module.exports.Component=register("background",{schema:{color:{type:"color",default:"black"},transparent:{default:!1},generateEnvironment:{default:!0},directionalLight:{type:"selector"}},init:function(){var e=this;this.pmremGenerator=new THREE.PMREMGenerator(this.el.renderer),this.pmremGenerator.compileCubemapShader(),this.cubeRenderTarget=new THREE.WebGLCubeRenderTarget(256,{format:THREE.RGBFormat,generateMipmaps:!0,minFilter:THREE.LinearMipmapLinearFilter}),this.lightProbeTarget=new THREE.WebGLCubeRenderTarget(16,{format:THREE.RGBFormat,generateMipmaps:!1}),this.cubeCamera=new THREE.CubeCamera(.1,1e3,this.cubeRenderTarget),this.needsEnvironmentUpdate=!0,this.timeSinceUpdate=0;var t=this.el.getAttribute("webxr"),i=t.optionalFeatures;i.includes("light-estimation")||(i.push("light-estimation"),this.el.setAttribute("webxr",t)),this.el.sceneEl.addEventListener("enter-vr",function(){e.el.renderer.xr.getSession().requestLightProbe&&e.el.sceneEl.is("ar-mode")&&e.startLightProbe()}),this.el.sceneEl.addEventListener("exit-vr",function(){e.stopLightProbe()})},stopLightProbe:function(){var e=this.data,t=this.el.sceneEl.object3D;this.xrLightProbe=null,this.probeLight.components.light.light.intensity=0,this.ownDirectionalLight&&(this.ownDirectionalLight.components.light.light.intensity=0),e.generateEnvironment?this.needsEnvironmentUpdate=!0:t.environment=null},setupLightsForLightingEstimation:function(){if(this.data.directionalLight)this.directionalLight=this.data.directionalLight;else{var e=this.ownDirectionalLight||document.createElement("a-light");e.setAttribute("type","directional"),e.setAttribute("intensity",0),this.el.appendChild(e),this.directionalLight=e,this.ownDirectionalLight=e}if(!this.probeLight){var t=document.createElement("a-light");t.setAttribute("type","probe"),t.setAttribute("intensity",0),this.el.appendChild(t),this.probeLight=t}},startLightProbe:function(){var e=this.data,t=this.el.sceneEl.object3D;e.generateEnvironment?(this.needsLightProbeUpdate=!0,this.needsEnvironmentUpdate=!0):t.environment=null},setupLightProbe:function(){var e=this.el.object3D,t=this.el.renderer,i=t.xr.getSession(),n=this,r=t.getContext();this.setupLightsForLightingEstimation(),this.glBinding=new XRWebGLBinding(i,r),r.getExtension("EXT_sRGB"),r.getExtension("OES_texture_half_float"),i.requestLightProbe().then(function(t){e.environment=n.lightProbeTarget.texture,n.xrLightProbe=t,t.addEventListener("reflectionchange",function(){n.needsEnvironmentUpdate=!0})}).catch(function(e){console.warn("Lighting estimation not supported: "+e.message),console.warn('Are you missing: webxr="optionalFeatures: light-estimation;" from <a-scene>?')})},update:function(){var e=this.el.sceneEl.object3D,t=this.data,i=this.el.object3D;t.transparent?i.background=null:i.background=new THREE.Color(t.color),t.generateEnvironment?this.needsEnvironmentUpdate=!0:e.environment=null},updateXRCubeMap:function(){var e=this.el.renderer,t=this.glBinding.getReflectionCubeMap(this.xrLightProbe);if(t){e.properties.get(this.lightProbeTarget.texture).__webglTexture=t}},tick:function(){var e=this.el.object3D,t=this.el.renderer,i=this.el.sceneEl.frame;if(i&&this.xrLightProbe){var n=i.getLightEstimate(this.xrLightProbe);n&&updateLights(n,this.probeLight.components.light.light,this.directionalLight.components.light.light,this.directionalLight.object3D.position)}if(this.needsEnvironmentUpdate){if(this.needsLightProbeUpdate){if(!i)return;this.needsLightProbeUpdate=!1,this.setupLightProbe()}this.xrLightProbe?this.updateXRCubeMap():(this.cubeCamera.position.set(0,1.6,0),e.environment=null,this.cubeCamera.update(t,e),e.environment=this.pmremGenerator.fromCubemap(this.cubeRenderTarget.texture).texture),this.needsEnvironmentUpdate=!1}},remove:function(){var e=this.data,t=this.el.object3D;if(e.transparent)return void(t.background=null);this.pmremGenerator.dispose(),t.background=COMPONENTS[this.name].schema.color.default}});
},{"../../core/component":135}],105:[function(require,module,exports){
var register=require("../../core/component").registerComponent;module.exports.Component=register("debug",{schema:{default:!0}});
},{"../../core/component":135}],106:[function(require,module,exports){
function createPermissionDialog(e,t,i,n,o){var a,s,c;return a=document.createElement("div"),a.classList.add(DIALOG_BUTTONS_CONTAINER_CLASS),s=document.createElement("button"),s.classList.add(DIALOG_BUTTON_CLASS,DIALOG_DENY_BUTTON_CLASS),s.setAttribute(constants.AFRAME_INJECTED,""),s.innerHTML=e,a.appendChild(s),c=document.createElement("button"),c.classList.add(DIALOG_BUTTON_CLASS,DIALOG_ALLOW_BUTTON_CLASS),c.setAttribute(constants.AFRAME_INJECTED,""),c.innerHTML=t,a.appendChild(c),c.addEventListener("click",function(e){e.stopPropagation(),n()}),s.addEventListener("click",function(e){e.stopPropagation(),o()}),createDialog(i,a)}function createAlertDialog(e,t,i){var n,o;return n=document.createElement("div"),n.classList.add(DIALOG_BUTTONS_CONTAINER_CLASS),o=document.createElement("button"),o.classList.add(DIALOG_BUTTON_CLASS,DIALOG_OK_BUTTON_CLASS),o.setAttribute(constants.AFRAME_INJECTED,""),o.innerHTML=e,n.appendChild(o),o.addEventListener("click",function(e){e.stopPropagation(),i()}),createDialog(t,n)}function createDialog(e,t){var i,n,o,a;return i=document.createElement("div"),i.classList.add(MODAL_CLASS),i.setAttribute(constants.AFRAME_INJECTED,""),n=document.createElement("div"),n.className=DIALOG_CLASS,n.setAttribute(constants.AFRAME_INJECTED,""),i.appendChild(n),o=document.createElement("div"),o.classList.add(DIALOG_TEXT_CONTAINER_CLASS),n.appendChild(o),a=document.createElement("div"),a.classList.add(DIALOG_TEXT_CLASS),a.innerHTML=e,o.appendChild(a),n.appendChild(t),i}var registerComponent=require("../../core/component").registerComponent,utils=require("../../utils/"),bind=utils.bind,constants=require("../../constants/"),MODAL_CLASS="a-modal",DIALOG_CLASS="a-dialog",DIALOG_TEXT_CLASS="a-dialog-text",DIALOG_TEXT_CONTAINER_CLASS="a-dialog-text-container",DIALOG_BUTTONS_CONTAINER_CLASS="a-dialog-buttons-container",DIALOG_BUTTON_CLASS="a-dialog-button",DIALOG_ALLOW_BUTTON_CLASS="a-dialog-allow-button",DIALOG_DENY_BUTTON_CLASS="a-dialog-deny-button",DIALOG_OK_BUTTON_CLASS="a-dialog-ok-button";module.exports.Component=registerComponent("device-orientation-permission-ui",{schema:{enabled:{default:!0},deviceMotionMessage:{default:"This immersive website requires access to your device motion sensors."},httpsMessage:{default:"Access this site over HTTPS to enter VR mode and grant access to the device sensors."},denyButtonText:{default:"Deny"},allowButtonText:{default:"Allow"},cancelButtonText:{default:"Cancel"}},init:function(){var e=this;if(this.data.enabled){if("localhost"!==location.hostname&&"127.0.0.1"!==location.hostname&&"http:"===location.protocol&&this.showHTTPAlert(),"undefined"==typeof DeviceOrientationEvent||!DeviceOrientationEvent.requestPermission)return void(this.permissionGranted=!0);this.onDeviceMotionDialogAllowClicked=bind(this.onDeviceMotionDialogAllowClicked,this),this.onDeviceMotionDialogDenyClicked=bind(this.onDeviceMotionDialogDenyClicked,this),DeviceOrientationEvent.requestPermission().catch(function(){e.devicePermissionDialogEl=createPermissionDialog(e.data.denyButtonText,e.data.allowButtonText,e.data.deviceMotionMessage,e.onDeviceMotionDialogAllowClicked,e.onDeviceMotionDialogDenyClicked),e.el.appendChild(e.devicePermissionDialogEl)}).then(function(){e.el.emit("deviceorientationpermissiongranted"),e.permissionGranted=!0})}},remove:function(){this.devicePermissionDialogEl&&this.el.removeChild(this.devicePermissionDialogEl)},onDeviceMotionDialogDenyClicked:function(){this.remove()},showHTTPAlert:function(){var e=this,t=createAlertDialog(e.data.cancelButtonText,e.data.httpsMessage,function(){e.el.removeChild(t)});this.el.appendChild(t)},onDeviceMotionDialogAllowClicked:function(){var e=this;this.el.emit("deviceorientationpermissionrequested"),DeviceOrientationEvent.requestPermission().then(function(t){"granted"===t?(e.el.emit("deviceorientationpermissiongranted"),e.permissionGranted=!0):e.el.emit("deviceorientationpermissionrejected"),e.remove()}).catch(console.error)}});
},{"../../constants/":127,"../../core/component":135,"../../utils/":210}],107:[function(require,module,exports){
var registerComponent=require("../../core/component").registerComponent;module.exports.Component=registerComponent("embedded",{dependencies:["vr-mode-ui"],schema:{default:!0},update:function(){var e=this.el,r=e.querySelector(".a-enter-vr");!0===this.data?(r&&r.classList.add("embedded"),e.removeFullScreenStyles()):(r&&r.classList.remove("embedded"),e.addFullScreenStyles())}});
},{"../../core/component":135}],108:[function(require,module,exports){
function getFog(e){var o;return o="exponential"===e.type?new THREE.FogExp2(e.color,e.density):new THREE.Fog(e.color,e.near,e.far),o.name=e.type,o}var register=require("../../core/component").registerComponent,THREE=require("../../lib/three"),debug=require("../../utils/debug"),warn=debug("components:fog:warn");module.exports.Component=register("fog",{schema:{color:{type:"color",default:"#000"},density:{default:25e-5},far:{default:1e3,min:0},near:{default:1,min:0},type:{default:"linear",oneOf:["linear","exponential"]}},update:function(){var e=this.data,o=this.el,t=this.el.object3D.fog;return o.isScene?t&&e.type===t.name?void Object.keys(this.schema).forEach(function(o){var n=e[o];"color"===o&&(n=new THREE.Color(n)),t[o]=n}):(o.object3D.fog=getFog(e),void o.systems.material.updateMaterials()):void warn("Fog component can only be applied to <a-scene>")},remove:function(){var e=this.el.object3D.fog;e&&(e.far=0,e.near=.1)}});
},{"../../core/component":135,"../../lib/three":183,"../../utils/debug":206}],109:[function(require,module,exports){
(function (process){
function getFuzzyPatchVersion(e){var n=e.split(".");return n[2]="x",n.join(".")}var AFRAME_INJECTED=require("../../constants").AFRAME_INJECTED,pkg=require("../../../package"),registerComponent=require("../../core/component").registerComponent,utils=require("../../utils/"),INSPECTOR_DEV_URL="https://aframe.io/aframe-inspector/dist/aframe-inspector.js",INSPECTOR_RELEASE_URL="https://unpkg.com/aframe-inspector@"+getFuzzyPatchVersion(pkg.version)+"/dist/aframe-inspector.min.js",INSPECTOR_URL="dev"===process.env.INSPECTOR_VERSION?INSPECTOR_DEV_URL:INSPECTOR_RELEASE_URL,LOADING_MESSAGE="Loading Inspector",LOADING_ERROR_MESSAGE="Error loading Inspector";module.exports.Component=registerComponent("inspector",{schema:{url:{default:INSPECTOR_URL}},init:function(){this.firstPlay=!0,this.onKeydown=this.onKeydown.bind(this),this.onMessage=this.onMessage.bind(this),this.initOverlay(),window.addEventListener("keydown",this.onKeydown),window.addEventListener("message",this.onMessage)},play:function(){var e;this.firstPlay&&"false"!==(e=utils.getUrlParameter("inspector"))&&e&&(this.openInspector(),this.firstPlay=!1)},initOverlay:function(){this.loadingMessageEl=document.createElement("div"),this.loadingMessageEl.classList.add("a-inspector-loader"),this.loadingMessageEl.innerHTML=LOADING_MESSAGE+'<span class="dots"><span>.</span><span>.</span><span>.</span></span>'},remove:function(){this.removeEventListeners()},onKeydown:function(e){73===e.keyCode&&(e.ctrlKey&&e.altKey||e.getModifierState("AltGraph"))&&this.openInspector()},showLoader:function(){document.body.appendChild(this.loadingMessageEl)},hideLoader:function(){document.body.removeChild(this.loadingMessageEl)},onMessage:function(e){"INJECT_AFRAME_INSPECTOR"===e.data&&this.openInspector()},openInspector:function(e){var n,t=this;if(AFRAME.INSPECTOR||AFRAME.inspectorInjected)return void AFRAME.INSPECTOR.open(e);this.showLoader(),n=document.createElement("script"),n.src=this.data.url,n.setAttribute("data-name","aframe-inspector"),n.setAttribute(AFRAME_INJECTED,""),n.onload=function(){AFRAME.INSPECTOR.open(e),t.hideLoader(),t.removeEventListeners()},n.onerror=function(){t.loadingMessageEl.innerHTML=LOADING_ERROR_MESSAGE},document.head.appendChild(n),AFRAME.inspectorInjected=!0},removeEventListeners:function(){window.removeEventListener("keydown",this.onKeydown),window.removeEventListener("message",this.onMessage)}});
}).call(this,require('_process'))

},{"../../../package":74,"../../constants":127,"../../core/component":135,"../../utils/":210,"_process":49}],110:[function(require,module,exports){
var registerComponent=require("../../core/component").registerComponent,shouldCaptureKeyEvent=require("../../utils/").shouldCaptureKeyEvent;module.exports.Component=registerComponent("keyboard-shortcuts",{schema:{enterVR:{default:!0},exitVR:{default:!0}},init:function(){this.onKeyup=this.onKeyup.bind(this)},update:function(e){var t=this.data;this.enterVREnabled=t.enterVR},play:function(){window.addEventListener("keyup",this.onKeyup,!1)},pause:function(){window.removeEventListener("keyup",this.onKeyup)},onKeyup:function(e){var t=this.el;shouldCaptureKeyEvent(e)&&(this.enterVREnabled&&70===e.keyCode&&t.enterVR(),this.enterVREnabled&&27===e.keyCode&&t.exitVR())}});
},{"../../core/component":135,"../../utils/":210}],111:[function(require,module,exports){
var debug=require("../../utils/debug"),registerComponent=require("../../core/component").registerComponent,warn=debug("components:pool:warn");module.exports.Component=registerComponent("pool",{schema:{container:{default:""},mixin:{default:""},size:{default:0},dynamic:{default:!1}},multiple:!0,initPool:function(){var t;for(this.availableEls=[],this.usedEls=[],this.data.mixin||warn("No mixin provided for pool component."),this.data.container&&(this.container=document.querySelector(this.data.container),this.container||warn("Container "+this.data.container+" not found.")),this.container=this.container||this.el,t=0;t<this.data.size;++t)this.createEntity()},update:function(t){var i=this.data;t.mixin===i.mixin&&t.size===i.size||this.initPool()},createEntity:function(){var t;t=document.createElement("a-entity"),t.play=this.wrapPlay(t.play),t.setAttribute("mixin",this.data.mixin),t.object3D.visible=!1,t.pause(),this.container.appendChild(t),this.availableEls.push(t)},wrapPlay:function(t){var i=this.usedEls;return function(){-1!==i.indexOf(this)&&t.call(this)}},requestEntity:function(){var t;if(0===this.availableEls.length){if(!1===this.data.dynamic)return void warn("Requested entity from empty pool: "+this.attrName);warn("Requested entity from empty pool. This pool is dynamic and will resize automatically. You might want to increase its initial size: "+this.attrName),this.createEntity()}return t=this.availableEls.shift(),this.usedEls.push(t),t.object3D.visible=!0,t},returnEntity:function(t){var i=this.usedEls.indexOf(t);return-1===i?void warn("The returned entity was not previously pooled from "+this.attrName):(this.usedEls.splice(i,1),this.availableEls.push(t),t.object3D.visible=!1,t.pause(),t)}});
},{"../../core/component":135,"../../utils/debug":206}],112:[function(require,module,exports){
var registerComponent=require("../../core/component").registerComponent,THREE=require("../../lib/three"),VERTEX_SHADER=["attribute vec3 position;","attribute vec2 uv;","uniform mat4 projectionMatrix;","uniform mat4 modelViewMatrix;","varying vec2 vUv;","void main()  {","  vUv = vec2( 1.- uv.x, uv.y );","  gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );","}"].join("\n"),FRAGMENT_SHADER=["precision mediump float;","uniform samplerCube map;","varying vec2 vUv;","#define M_PI 3.141592653589793238462643383279","void main() {","  vec2 uv = vUv;","  float longitude = uv.x * 2. * M_PI - M_PI + M_PI / 2.;","  float latitude = uv.y * M_PI;","  vec3 dir = vec3(","    - sin( longitude ) * sin( latitude ),","    cos( latitude ),","    - cos( longitude ) * sin( latitude )","  );","  normalize( dir );","  gl_FragColor = vec4( textureCube( map, dir ).rgb, 1.0 );","}"].join("\n");module.exports.Component=registerComponent("screenshot",{schema:{width:{default:4096},height:{default:2048},camera:{type:"selector"}},init:function(){function e(){var e=t.renderer.getContext();e&&(a.cubeMapSize=e.getParameter(e.MAX_CUBE_MAP_TEXTURE_SIZE),a.material=new THREE.RawShaderMaterial({uniforms:{map:{type:"t",value:null}},vertexShader:VERTEX_SHADER,fragmentShader:FRAGMENT_SHADER,side:THREE.DoubleSide}),a.quad=new THREE.Mesh(new THREE.PlaneBufferGeometry(1,1),a.material),a.quad.visible=!1,a.camera=new THREE.OrthographicCamera(-.5,.5,.5,-.5,-1e4,1e4),a.canvas=document.createElement("canvas"),a.ctx=a.canvas.getContext("2d"),t.object3D.add(a.quad),a.onKeyDown=a.onKeyDown.bind(a))}var t=this.el,a=this;t.renderer?e():t.addEventListener("render-target-loaded",e)},getRenderTarget:function(e,t){return new THREE.WebGLRenderTarget(e,t,{encoding:THREE.sRGBEncoding,minFilter:THREE.LinearFilter,magFilter:THREE.LinearFilter,wrapS:THREE.ClampToEdgeWrapping,wrapT:THREE.ClampToEdgeWrapping,format:THREE.RGBAFormat,type:THREE.UnsignedByteType})},resize:function(e,t){this.quad.scale.set(e,t,1),this.camera.left=-1*e/2,this.camera.right=e/2,this.camera.top=t/2,this.camera.bottom=-1*t/2,this.camera.updateProjectionMatrix(),this.canvas.width=e,this.canvas.height=t},play:function(){window.addEventListener("keydown",this.onKeyDown)},onKeyDown:function(e){var t=83===e.keyCode&&e.ctrlKey&&e.altKey;if(this.data&&t){var a=e.shiftKey?"equirectangular":"perspective";this.capture(a)}},setCapture:function(e){var t,a,r,i,n=this.el;return"perspective"===e?(this.quad.visible=!1,a=this.data.camera&&this.data.camera.components.camera.camera||n.camera,t={width:this.data.width,height:this.data.height}):(a=this.camera,i=new THREE.WebGLCubeRenderTarget(Math.min(this.cubeMapSize,2048),{format:THREE.RGBFormat,generateMipmaps:!0,minFilter:THREE.LinearMipmapLinearFilter,encoding:THREE.sRGBEncoding}),r=new THREE.CubeCamera(n.camera.near,n.camera.far,i),n.camera.getWorldPosition(r.position),n.camera.getWorldQuaternion(r.quaternion),r.update(n.renderer,n.object3D),this.quad.material.uniforms.map.value=r.renderTarget.texture,t={width:this.data.width,height:this.data.height},this.quad.visible=!0),{camera:a,size:t,projection:e}},capture:function(e){var t,a=this.el.renderer.xr.enabled,r=this.el.renderer;r.xr.enabled=!1,t=this.setCapture(e),this.renderCapture(t.camera,t.size,t.projection),this.saveCapture(),r.xr.enabled=a},getCanvas:function(e){var t=this.el.renderer.xr.enabled,a=this.el.renderer,r=this.setCapture(e);return a.xr.enabled=!1,this.renderCapture(r.camera,r.size,r.projection),a.xr.enabled=t,this.canvas},renderCapture:function(e,t,a){var r,i,n,o=this.el.renderer.autoClear,d=this.el,s=d.renderer;i=this.getRenderTarget(t.width,t.height),n=new Uint8Array(4*t.width*t.height),this.resize(t.width,t.height),s.autoClear=!0,s.clear(),s.setRenderTarget(i),s.render(d.object3D,e),s.autoClear=o,s.readRenderTargetPixels(i,0,0,t.width,t.height,n),s.setRenderTarget(null),"perspective"===a&&(n=this.flipPixelsVertically(n,t.width,t.height)),r=new ImageData(new Uint8ClampedArray(n),t.width,t.height),this.quad.visible=!1,this.ctx.putImageData(r,0,0)},flipPixelsVertically:function(e,t,a){for(var r=e.slice(0),i=0;i<t;++i)for(var n=0;n<a;++n)r[4*i+n*t*4]=e[4*i+(a-n)*t*4],r[4*i+1+n*t*4]=e[4*i+1+(a-n)*t*4],r[4*i+2+n*t*4]=e[4*i+2+(a-n)*t*4],r[4*i+3+n*t*4]=e[4*i+3+(a-n)*t*4];return r},saveCapture:function(){this.canvas.toBlob(function(e){var t="screenshot-"+document.title.toLowerCase()+"-"+Date.now()+".png",a=document.createElement("a"),r=URL.createObjectURL(e);a.href=r,a.setAttribute("download",t),a.innerHTML="downloading...",a.style.display="none",document.body.appendChild(a),setTimeout(function(){a.click(),document.body.removeChild(a)},1)},"image/png")}});
},{"../../core/component":135,"../../lib/three":183}],113:[function(require,module,exports){
function createStats(t){var e=new ThreeStats(t.renderer),s=new AFrameStats(t),i=t.isMobile?[]:[e,s];return new RStats({css:[],values:{fps:{caption:"fps",below:30}},groups:[{caption:"Framerate",values:["fps","raf"]}],plugins:i})}var registerComponent=require("../../core/component").registerComponent,RStats=require("../../../vendor/rStats"),utils=require("../../utils");require("../../../vendor/rStats.extras"),require("../../lib/rStatsAframe");var AFrameStats=window.aframeStats,bind=utils.bind,HIDDEN_CLASS="a-hidden",ThreeStats=window.threeStats;module.exports.Component=registerComponent("stats",{schema:{default:!0},init:function(){var t=this.el;"false"!==utils.getUrlParameter("stats")&&(this.stats=createStats(t),this.statsEl=document.querySelector(".rs-base"),this.hideBound=bind(this.hide,this),this.showBound=bind(this.show,this),t.addEventListener("enter-vr",this.hideBound),t.addEventListener("exit-vr",this.showBound))},update:function(){if(this.stats)return this.data?this.show():this.hide()},remove:function(){this.el.removeEventListener("enter-vr",this.hideBound),this.el.removeEventListener("exit-vr",this.showBound),this.statsEl&&this.statsEl.parentNode.removeChild(this.statsEl)},tick:function(){var t=this.stats;t&&(t("rAF").tick(),t("FPS").frame(),t().update())},hide:function(){this.statsEl.classList.add(HIDDEN_CLASS)},show:function(){this.statsEl.classList.remove(HIDDEN_CLASS)}});
},{"../../../vendor/rStats":222,"../../../vendor/rStats.extras":221,"../../core/component":135,"../../lib/rStatsAframe":182,"../../utils":210}],114:[function(require,module,exports){
function createEnterVRButton(t){var e,n;return n=document.createElement("div"),n.classList.add(ENTER_VR_CLASS),n.setAttribute(constants.AFRAME_INJECTED,""),e=document.createElement("button"),e.className=ENTER_VR_BTN_CLASS,e.setAttribute("title","Enter VR mode with a headset or fullscreen mode on a desktop. Visit https://webvr.rocks or https://webvr.info for more information."),e.setAttribute(constants.AFRAME_INJECTED,""),utils.device.isMobile()&&applyStickyHoverFix(e),n.appendChild(e),e.addEventListener("click",function(e){t(),e.stopPropagation()}),n}function createEnterARButton(t){var e,n;return n=document.createElement("div"),n.classList.add(ENTER_AR_CLASS),n.setAttribute(constants.AFRAME_INJECTED,""),e=document.createElement("button"),e.className=ENTER_AR_BTN_CLASS,e.setAttribute("title","Enter AR mode with a headset or handheld device. Visit https://webvr.rocks or https://webvr.info for more information."),e.setAttribute(constants.AFRAME_INJECTED,""),utils.device.isMobile()&&applyStickyHoverFix(e),n.appendChild(e),e.addEventListener("click",function(e){t(),e.stopPropagation()}),n}function createOrientationModal(t){var e=document.createElement("div");e.className=ORIENTATION_MODAL_CLASS,e.classList.add(HIDDEN_CLASS),e.setAttribute(constants.AFRAME_INJECTED,"");var n=document.createElement("button");return n.setAttribute(constants.AFRAME_INJECTED,""),n.innerHTML="Exit VR",n.addEventListener("click",t),e.appendChild(n),e}function applyStickyHoverFix(t){t.addEventListener("touchstart",function(){t.classList.remove("resethover")}),t.addEventListener("touchend",function(){t.classList.add("resethover")})}var registerComponent=require("../../core/component").registerComponent,constants=require("../../constants/"),utils=require("../../utils/"),bind=utils.bind,ENTER_VR_CLASS="a-enter-vr",ENTER_AR_CLASS="a-enter-ar",ENTER_VR_BTN_CLASS="a-enter-vr-button",ENTER_AR_BTN_CLASS="a-enter-ar-button",HIDDEN_CLASS="a-hidden",ORIENTATION_MODAL_CLASS="a-orientation-modal";module.exports.Component=registerComponent("vr-mode-ui",{dependencies:["canvas"],schema:{enabled:{default:!0},enterVRButton:{default:""},enterARButton:{default:""}},init:function(){var t=this,e=this.el;"false"!==utils.getUrlParameter("ui")&&(this.insideLoader=!1,this.enterVREl=null,this.enterAREl=null,this.orientationModalEl=null,this.bindMethods(),e.addEventListener("enter-vr",this.updateEnterInterfaces),e.addEventListener("exit-vr",this.updateEnterInterfaces),e.addEventListener("update-vr-devices",this.updateEnterInterfaces),window.addEventListener("message",function(e){"loaderReady"===e.data.type&&(t.insideLoader=!0,t.remove())}),window.addEventListener("orientationchange",this.toggleOrientationModalIfNeeded))},bindMethods:function(){this.onEnterVRButtonClick=bind(this.onEnterVRButtonClick,this),this.onEnterARButtonClick=bind(this.onEnterARButtonClick,this),this.onModalClick=bind(this.onModalClick,this),this.toggleOrientationModalIfNeeded=bind(this.toggleOrientationModalIfNeeded,this),this.updateEnterInterfaces=bind(this.updateEnterInterfaces,this)},onModalClick:function(){this.el.exitVR()},onEnterVRButtonClick:function(){this.el.enterVR()},onEnterARButtonClick:function(){this.el.enterAR()},update:function(){var t=this.data,e=this.el;if(!t.enabled||this.insideLoader||"false"===utils.getUrlParameter("ui"))return this.remove();this.enterVREl||this.enterAREl||this.orientationModalEl||(t.enterVRButton?(this.enterVREl=document.querySelector(t.enterVRButton),this.enterVREl.addEventListener("click",this.onEnterVRButtonClick)):(this.enterVREl=createEnterVRButton(this.onEnterVRButtonClick),e.appendChild(this.enterVREl)),t.enterARButton?(this.enterAREl=document.querySelector(t.enterARButton),this.enterAREl.addEventListener("click",this.onEnterARButtonClick)):(this.enterAREl=createEnterARButton(this.onEnterARButtonClick),e.appendChild(this.enterAREl)),this.orientationModalEl=createOrientationModal(this.onModalClick),e.appendChild(this.orientationModalEl),this.updateEnterInterfaces())},remove:function(){[this.enterVREl,this.enterAREl,this.orientationModalEl].forEach(function(t){t&&t.parentNode&&t.parentNode.removeChild(t)}),this.enterVREl=void 0,this.enterAREl=void 0,this.orientationModalEl=void 0},updateEnterInterfaces:function(){this.toggleEnterVRButtonIfNeeded(),this.toggleEnterARButtonIfNeeded(),this.toggleOrientationModalIfNeeded()},toggleEnterVRButtonIfNeeded:function(){var t=this.el;this.enterVREl&&(t.is("vr-mode")?this.enterVREl.classList.add(HIDDEN_CLASS):this.enterVREl.classList.remove(HIDDEN_CLASS))},toggleEnterARButtonIfNeeded:function(){var t=this.el;this.enterAREl&&(t.is("vr-mode")||!utils.device.checkARSupport()?this.enterAREl.classList.add(HIDDEN_CLASS):this.enterAREl.classList.remove(HIDDEN_CLASS))},toggleOrientationModalIfNeeded:function(){var t=this.el,e=this.orientationModalEl;e&&t.isMobile&&(!utils.device.isLandscape()&&t.is("vr-mode")?e.classList.remove(HIDDEN_CLASS):e.classList.add(HIDDEN_CLASS))}});
},{"../../constants/":127,"../../core/component":135,"../../utils/":210}],115:[function(require,module,exports){
var component=require("../core/component"),THREE=require("../lib/three"),bind=require("../utils/bind"),registerComponent=component.registerComponent;module.exports.Component=registerComponent("shadow",{schema:{cast:{default:!0},receive:{default:!0}},init:function(){this.onMeshChanged=bind(this.update,this),this.el.addEventListener("object3dset",this.onMeshChanged),this.system.setShadowMapEnabled(!0)},update:function(){var e=this.data;this.updateDescendants(e.cast,e.receive)},remove:function(){this.el.removeEventListener("object3dset",this.onMeshChanged),this.updateDescendants(!1,!1)},updateDescendants:function(e,t){var n=this.el.sceneEl;this.el.object3D.traverse(function(s){if(s instanceof THREE.Mesh&&(s.castShadow=e,s.receiveShadow=t,n.hasLoaded&&s.material))for(var a=Array.isArray(s.material)?s.material:[s.material],i=0;i<a.length;i++)a[i].needsUpdate=!0})}});
},{"../core/component":135,"../lib/three":183,"../utils/bind":204}],116:[function(require,module,exports){
var registerComponent=require("../core/component").registerComponent,debug=require("../utils/debug"),THREE=require("../lib/three"),warn=debug("components:sound:warn");module.exports.Component=registerComponent("sound",{schema:{autoplay:{default:!1},distanceModel:{default:"inverse",oneOf:["linear","inverse","exponential"]},loop:{default:!1},maxDistance:{default:1e4},on:{default:""},poolSize:{default:1},positional:{default:!0},refDistance:{default:1},rolloffFactor:{default:1},src:{type:"audio"},volume:{default:1}},multiple:!0,init:function(){var e=this;this.listener=null,this.audioLoader=new THREE.AudioLoader,this.pool=new THREE.Group,this.loaded=!1,this.mustPlay=!1,this.playSoundBound=function(){e.playSound()}},update:function(e){var t,o,i=this.data,n=i.src!==e.src;if(n){if(!i.src)return;this.setupSound()}for(t=0;t<this.pool.children.length;t++)o=this.pool.children[t],i.positional&&(o.setDistanceModel(i.distanceModel),o.setMaxDistance(i.maxDistance),o.setRefDistance(i.refDistance),o.setRolloffFactor(i.rolloffFactor)),o.setLoop(i.loop),o.setVolume(i.volume),o.isPaused=!1;if(i.on!==e.on&&this.updateEventListener(e.on),n){var s=this;this.loaded=!1,this.audioLoader.load(i.src,function(e){for(t=0;t<s.pool.children.length;t++)o=s.pool.children[t],o.setBuffer(e);s.loaded=!0,THREE.Cache.remove(i.src),(s.data.autoplay||s.mustPlay)&&s.playSound(),s.el.emit("sound-loaded",s.evtDetail,!1)})}},pause:function(){this.stopSound(),this.removeEventListener()},play:function(){this.data.autoplay&&this.playSound(),this.updateEventListener()},remove:function(){var e,t;this.removeEventListener(),this.el.getObject3D(this.attrName)&&this.el.removeObject3D(this.attrName);try{for(e=0;e<this.pool.children.length;e++)t=this.pool.children[e],t.disconnect()}catch(e){warn("Audio source not properly disconnected")}},updateEventListener:function(e){var t=this.el;e&&t.removeEventListener(e,this.playSoundBound),t.addEventListener(this.data.on,this.playSoundBound)},removeEventListener:function(){this.el.removeEventListener(this.data.on,this.playSoundBound)},setupSound:function(){var e,t,o=this.el,i=o.sceneEl,n=this;this.pool.children.length>0&&(this.stopSound(),o.removeObject3D("sound"));var s=this.listener=i.audioListener||new THREE.AudioListener;for(i.audioListener=s,i.camera&&i.camera.add(s),i.addEventListener("camera-set-active",function(e){e.detail.cameraEl.getObject3D("camera").add(s)}),this.pool=new THREE.Group,e=0;e<this.data.poolSize;e++)t=this.data.positional?new THREE.PositionalAudio(s):new THREE.Audio(s),this.pool.add(t);for(o.setObject3D(this.attrName,this.pool),e=0;e<this.pool.children.length;e++)t=this.pool.children[e],t.onEnded=function(){this.isPlaying=!1,n.el.emit("sound-ended",n.evtDetail,!1)}},pauseSound:function(){var e,t;for(this.isPlaying=!1,e=0;e<this.pool.children.length;e++)t=this.pool.children[e],t.source&&t.source.buffer&&t.isPlaying&&!t.isPaused&&(t.isPaused=!0,t.pause())},playSound:function(e){var t,o,i;if(!this.loaded)return warn("Sound not loaded yet. It will be played once it finished loading"),void(this.mustPlay=!0);for(t=!1,this.isPlaying=!0,o=0;o<this.pool.children.length;o++)i=this.pool.children[o],i.isPlaying||!i.buffer||t||(e&&e(i),i.play(),i.isPaused=!1,t=!0);if(!t)return void warn("All the sounds are playing. If you need to play more sounds simultaneously consider increasing the size of pool with the `poolSize` attribute.",this.el);this.mustPlay=!1},stopSound:function(){var e,t;for(this.isPlaying=!1,e=0;e<this.pool.children.length;e++){if(t=this.pool.children[e],!t.source||!t.source.buffer)return;t.stop()}}});
},{"../core/component":135,"../lib/three":183,"../utils/debug":206}],117:[function(require,module,exports){
function parseSide(t){switch(t){case"back":return THREE.FrontSide;case"double":return THREE.DoubleSide;default:return THREE.BackSide}}function loadFont(t,e){return new Promise(function(r,n){loadBMFont(t,function(o,i){if(o)return error("Error loading font",t),void n(o);t.indexOf("/Roboto-msdf.json")>=0&&(e=30),e&&i.chars.map(function(t){t.yoffset+=e}),r(i)})})}function loadTexture(t){return new Promise(function(e,r){(new THREE.ImageLoader).load(t,function(t){e(t)},void 0,function(){error("Error loading font image",t),r(null)})})}function createShader(t,e,r){var n,o;return o=new shaders[e].Shader,o.el=t,o.init(r),o.update(r),n=o.material,n.transparent=r.transparent,{material:n,shader:o}}function computeWidth(t,e,r){return t||(.5+e)*r}function computeFontWidthFactor(t){var e=0,r=0,n=0;return t.chars.map(function(t){e+=t.xadvance,t.id>=48&&t.id<=57&&(n++,r+=t.xadvance)}),n?r/n:e/t.chars.length}function PromiseCache(){var t=this.cache={};this.get=function(e,r){return e in t?t[e]:(t[e]=r(),t[e])}}var createTextGeometry=require("three-bmfont-text"),loadBMFont=require("load-bmfont"),registerComponent=require("../core/component").registerComponent,coreShader=require("../core/shader"),THREE=require("../lib/three"),utils=require("../utils/"),error=utils.debug("components:text:error"),shaders=coreShader.shaders,warn=utils.debug("components:text:warn"),DEFAULT_WIDTH=1,MAX_ANISOTROPY=16,FONT_BASE_URL="https://cdn.aframe.io/fonts/",FONTS={aileronsemibold:FONT_BASE_URL+"Aileron-Semibold.fnt",dejavu:FONT_BASE_URL+"DejaVu-sdf.fnt",exo2bold:FONT_BASE_URL+"Exo2Bold.fnt",exo2semibold:FONT_BASE_URL+"Exo2SemiBold.fnt",kelsonsans:FONT_BASE_URL+"KelsonSans.fnt",monoid:FONT_BASE_URL+"Monoid.fnt",mozillavr:FONT_BASE_URL+"mozillavr.fnt",roboto:FONT_BASE_URL+"Roboto-msdf.json",sourcecodepro:FONT_BASE_URL+"SourceCodePro.fnt"},MSDF_FONTS=["roboto"],DEFAULT_FONT="roboto";module.exports.FONTS=FONTS;var cache=new PromiseCache,fontWidthFactors={},textures={},protocolRe=/^\w+:/;module.exports.Component=registerComponent("text",{multiple:!0,schema:{align:{type:"string",default:"left",oneOf:["left","right","center"]},alphaTest:{default:.5},anchor:{default:"center",oneOf:["left","right","center","align"]},baseline:{default:"center",oneOf:["top","center","bottom"]},color:{type:"color",default:"#FFF"},font:{type:"string",default:DEFAULT_FONT},fontImage:{type:"string"},height:{type:"number"},letterSpacing:{type:"number",default:0},lineHeight:{type:"number"},negate:{type:"boolean",default:!0},opacity:{type:"number",default:1},shader:{default:"sdf",oneOf:shaders},side:{default:"front",oneOf:["front","back","double"]},tabSize:{default:4},transparent:{default:!0},value:{type:"string"},whiteSpace:{default:"normal",oneOf:["normal","pre","nowrap"]},width:{type:"number"},wrapCount:{type:"number",default:40},wrapPixels:{type:"number"},xOffset:{type:"number",default:0},yOffset:{type:"number",default:0},zOffset:{type:"number",default:.001}},init:function(){this.shaderData={},this.geometry=createTextGeometry(),this.createOrUpdateMaterial()},update:function(t){var e=this.data,r=this.currentFont;if(textures[e.font]?this.texture=textures[e.font]:(this.texture=textures[e.font]=new THREE.Texture,this.texture.anisotropy=MAX_ANISOTROPY),this.createOrUpdateMaterial(),t.font!==e.font)return void this.updateFont();r&&(this.updateGeometry(this.geometry,r),this.updateLayout())},remove:function(){this.geometry.dispose(),this.geometry=null,this.el.removeObject3D(this.attrName),this.material.dispose(),this.material=null,this.texture.dispose(),this.texture=null,this.shaderObject&&delete this.shaderObject},createOrUpdateMaterial:function(){var t,e,r,n=this.data,o=this.material,i=this.shaderData;if(r=n.shader,-1!==MSDF_FONTS.indexOf(n.font)||n.font.indexOf("-msdf.")>=0?r="msdf":n.font in FONTS&&-1===MSDF_FONTS.indexOf(n.font)&&(r="sdf"),t=(this.shaderObject&&this.shaderObject.name)!==r,i.alphaTest=n.alphaTest,i.color=n.color,i.map=this.texture,i.opacity=n.opacity,i.side=parseSide(n.side),i.transparent=n.transparent,i.negate=n.negate,!t)return this.shaderObject.update(i),o.transparent=i.transparent,void(o.side=i.side);e=createShader(this.el,r,i),this.material=e.material,this.shaderObject=e.shader,this.material.side=i.side,this.mesh&&(this.mesh.material=this.material)},updateFont:function(){var t,e=this.data,r=this.el,n=this.geometry,o=this;e.font||warn("No font specified. Using the default font."),this.mesh&&(this.mesh.visible=!1),t=this.lookupFont(e.font||DEFAULT_FONT)||e.font,cache.get(t,function(){return loadFont(t,e.yOffset)}).then(function(i){var a;if(1!==i.pages.length)throw new Error("Currently only single-page bitmap fonts are supported.");fontWidthFactors[t]||(i.widthFactor=fontWidthFactors[i]=computeFontWidthFactor(i)),o.currentFont=i,a=o.getFontImageSrc(),cache.get(a,function(){return loadTexture(a)}).then(function(t){var a=o.texture;a.image=t,a.needsUpdate=!0,textures[e.font]=a,o.texture=a,o.initMesh(),o.currentFont=i,o.updateGeometry(n,i),o.updateLayout(),o.mesh.visible=!0,r.emit("textfontset",{font:e.font,fontObj:i})}).catch(function(t){error(t.message),error(t.stack)})}).catch(function(t){error(t.message),error(t.stack)})},initMesh:function(){this.mesh||(this.mesh=new THREE.Mesh(this.geometry,this.material),this.el.setObject3D(this.attrName,this.mesh))},getFontImageSrc:function(){if(this.data.fontImage)return this.data.fontImage;var t=this.lookupFont(this.data.font||DEFAULT_FONT)||this.data.font,e=this.currentFont.pages[0];return e.match(protocolRe)&&0!==e.indexOf("http")?t.replace(/(\.fnt)|(\.json)/,".png"):THREE.LoaderUtils.extractUrlBase(t)+e},updateLayout:function(){var t,e,r,n,o,i,a,s,h,u,d=this.el,f=this.data,l=this.geometry,c=this.mesh;if(c&&l.layout){if(r=d.getAttribute("geometry"),s=f.width||r&&r.width||DEFAULT_WIDTH,i=computeWidth(f.wrapPixels,f.wrapCount,this.currentFont.widthFactor),a=s/i,o=l.layout,n=a*(o.height+o.descender),r&&"plane"===r.primitive&&(r.width||d.setAttribute("geometry","width",s),r.height||d.setAttribute("geometry","height",n)),"left"===(t="align"===f.anchor?f.align:f.anchor))h=0;else if("right"===t)h=-1*o.width;else{if("center"!==t)throw new TypeError("Invalid text.anchor property value",t);h=-1*o.width/2}if("bottom"===(e=f.baseline))u=0;else if("top"===e)u=-1*o.height+o.ascender;else{if("center"!==e)throw new TypeError("Invalid text.baseline property value",e);u=-1*o.height/2}c.position.x=h*a+f.xOffset,c.position.y=u*a,c.position.z=f.zOffset,c.scale.set(a,-1*a,a)}},lookupFont:function(t){return FONTS[t]},updateGeometry:function(){var t={},e={},r=/\\n/g,n=/\\t/g;return function(o,i){var a=this.data;e.font=i,e.lineHeight=a.lineHeight&&isFinite(a.lineHeight)?a.lineHeight:i.common.lineHeight,e.text=a.value.toString().replace(r,"\n").replace(n,"\t"),e.width=computeWidth(a.wrapPixels,a.wrapCount,i.widthFactor),o.update(utils.extend(t,a,e))}}()});
},{"../core/component":135,"../core/shader":145,"../lib/three":183,"../utils/":210,"load-bmfont":37,"three-bmfont-text":64}],118:[function(require,module,exports){
var registerComponent=require("../core/component").registerComponent,controllerUtils=require("../utils/tracked-controls"),DEFAULT_CAMERA_HEIGHT=require("../constants").DEFAULT_CAMERA_HEIGHT,THREE=require("../lib/three"),DEFAULT_HANDEDNESS=require("../constants").DEFAULT_HANDEDNESS,EYES_TO_ELBOW={x:.175,y:-.3,z:-.03},FOREARM={x:0,y:0,z:-.175},EMPTY_DAYDREAM_TOUCHES={touches:[]},EVENTS={AXISMOVE:"axismove",BUTTONCHANGED:"buttonchanged",BUTTONDOWN:"buttondown",BUTTONUP:"buttonup",TOUCHSTART:"touchstart",TOUCHEND:"touchend"};module.exports.Component=registerComponent("tracked-controls-webvr",{schema:{autoHide:{default:!0},controller:{default:0},id:{type:"string",default:""},hand:{type:"string",default:""},idPrefix:{type:"string",default:""},orientationOffset:{type:"vec3"},armModel:{default:!1},headElement:{type:"selector"}},init:function(){this.axis=this.el.components["tracked-controls"].axis=[0,0,0],this.buttonStates=this.el.components["tracked-controls"].buttonStates={},this.changedAxes=[],this.targetControllerNumber=this.data.controller,this.axisMoveEventDetail={axis:this.axis,changed:this.changedAxes},this.deltaControllerPosition=new THREE.Vector3,this.controllerQuaternion=new THREE.Quaternion,this.controllerEuler=new THREE.Euler,this.updateGamepad(),this.buttonEventDetails={}},tick:function(t,e){var i=this.el.getObject3D("mesh");i&&i.update&&i.update(e/1e3),this.updateGamepad(),this.updatePose(),this.updateButtons()},defaultUserHeight:function(){return DEFAULT_CAMERA_HEIGHT},getHeadElement:function(){return this.data.headElement||this.el.sceneEl.camera.el},updateGamepad:function(){var t=this.data,e=controllerUtils.findMatchingControllerWebVR(this.system.controllers,t.id,t.idPrefix,t.hand,t.controller);this.controller=e,this.el.components["tracked-controls"].controller=e,this.data.autoHide&&(this.el.object3D.visible=!!this.controller)},applyArmModel:function(t){var e,i,o,n,s,a=this.controller,r=this.controllerEuler,l=this.controllerQuaternion,h=this.deltaControllerPosition;i=this.getHeadElement(),o=i.object3D,s=this.defaultUserHeight(),n=a.pose,e=(a?a.hand:void 0)||DEFAULT_HANDEDNESS,t.copy(o.position),h.set(EYES_TO_ELBOW.x*("left"===e?-1:"right"===e?1:0),EYES_TO_ELBOW.y,EYES_TO_ELBOW.z),h.multiplyScalar(s),h.applyAxisAngle(o.up,o.rotation.y),t.add(h),h.set(FOREARM.x,FOREARM.y,FOREARM.z),h.multiplyScalar(s),n.orientation?l.fromArray(n.orientation):l.copy(o.quaternion),r.setFromQuaternion(l),r.set(r.x,r.y,0),h.applyEuler(r),t.add(h)},updatePose:function(){var t,e,i=this.controller,o=this.data,n=this.el.object3D,s=this.system.vrDisplay;i&&(t=i.pose,t.position?n.position.fromArray(t.position):o.armModel&&this.applyArmModel(n.position),t.orientation&&n.quaternion.fromArray(t.orientation),s&&t.position&&(e=this.el.sceneEl.renderer.xr.getStandingMatrix(),n.matrix.compose(n.position,n.quaternion,n.scale),n.matrix.multiplyMatrices(e,n.matrix),n.matrix.decompose(n.position,n.quaternion,n.scale)),n.rotateX(this.data.orientationOffset.x*THREE.Math.DEG2RAD),n.rotateY(this.data.orientationOffset.y*THREE.Math.DEG2RAD),n.rotateZ(this.data.orientationOffset.z*THREE.Math.DEG2RAD))},updateButtons:function(){var t,e,i=this.controller;if(i){for(e=0;e<i.buttons.length;++e)this.buttonStates[e]||(this.buttonStates[e]={pressed:!1,touched:!1,value:0}),this.buttonEventDetails[e]||(this.buttonEventDetails[e]={id:e,state:this.buttonStates[e]}),t=i.buttons[e],this.handleButton(e,t);this.handleAxes()}},handleButton:function(t,e){return!!(this.handlePress(t,e)|this.handleTouch(t,e)|this.handleValue(t,e))&&(this.el.emit(EVENTS.BUTTONCHANGED,this.buttonEventDetails[t],!1),!0)},handleAxes:function(){var t,e=!1,i=this.controller.axes,o=this.axis,n=this.changedAxes;for(this.changedAxes.splice(0,this.changedAxes.length),t=0;t<i.length;++t)n.push(o[t]!==i[t]),n[t]&&(e=!0);if(!e)return!1;for(this.axis.splice(0,this.axis.length),t=0;t<i.length;t++)this.axis.push(i[t]);return this.el.emit(EVENTS.AXISMOVE,this.axisMoveEventDetail,!1),!0},handlePress:function(t,e){var i,o=this.buttonStates[t];return e.pressed!==o.pressed&&(i=e.pressed?EVENTS.BUTTONDOWN:EVENTS.BUTTONUP,this.el.emit(i,this.buttonEventDetails[t],!1),o.pressed=e.pressed,!0)},handleTouch:function(t,e){var i,o=this.buttonStates[t];return e.touched!==o.touched&&(i=e.touched?EVENTS.TOUCHSTART:EVENTS.TOUCHEND,this.el.emit(i,this.buttonEventDetails[t],!1,EMPTY_DAYDREAM_TOUCHES),o.touched=e.touched,!0)},handleValue:function(t,e){var i=this.buttonStates[t];return e.value!==i.value&&(i.value=e.value,!0)}});
},{"../constants":127,"../core/component":135,"../lib/three":183,"../utils/tracked-controls":219}],119:[function(require,module,exports){
var controllerUtils=require("../utils/tracked-controls"),registerComponent=require("../core/component").registerComponent,EVENTS={AXISMOVE:"axismove",BUTTONCHANGED:"buttonchanged",BUTTONDOWN:"buttondown",BUTTONUP:"buttonup",TOUCHSTART:"touchstart",TOUCHEND:"touchend"};module.exports.Component=registerComponent("tracked-controls-webxr",{schema:{id:{type:"string",default:""},hand:{type:"string",default:""},handTrackingEnabled:{default:!1},index:{type:"int",default:-1},iterateControllerProfiles:{default:!1}},init:function(){this.updateController=this.updateController.bind(this),this.buttonEventDetails={},this.buttonStates=this.el.components["tracked-controls"].buttonStates={},this.axis=this.el.components["tracked-controls"].axis=[0,0,0],this.changedAxes=[],this.axisMoveEventDetail={axis:this.axis,changed:this.changedAxes}},update:function(){this.updateController()},play:function(){var t=this.el.sceneEl;this.updateController(),t.addEventListener("controllersupdated",this.updateController)},pause:function(){this.el.sceneEl.removeEventListener("controllersupdated",this.updateController)},isControllerPresent:function(t){return!(!this.controller||this.controller.gamepad)&&("none"===t.inputSource.handedness||t.inputSource.handedness===this.data.hand)},updateController:function(){this.controller=controllerUtils.findMatchingControllerWebXR(this.system.controllers,this.data.id,this.data.hand,this.data.index,this.data.iterateControllerProfiles,this.data.handTrackingEnabled),this.el.components["tracked-controls"].controller=this.controller,this.data.autoHide&&(this.el.object3D.visible=!!this.controller)},tick:function(){var t=this.el.sceneEl,e=this.controller,s=t.frame;e&&t.frame&&this.system.referenceSpace&&(e.hand||(this.pose=s.getPose(e.targetRaySpace,this.system.referenceSpace),this.updatePose(),this.updateButtons()))},updatePose:function(){var t=this.el.object3D,e=this.pose;e&&(t.matrix.elements=e.transform.matrix,t.matrix.decompose(t.position,t.rotation,t.scale))},updateButtons:function(){var t,e,s,n=this.controller;if(n&&n.gamepad){for(s=n.gamepad,e=0;e<s.buttons.length;++e)this.buttonStates[e]||(this.buttonStates[e]={pressed:!1,touched:!1,value:0}),this.buttonEventDetails[e]||(this.buttonEventDetails[e]={id:e,state:this.buttonStates[e]}),t=s.buttons[e],this.handleButton(e,t);this.handleAxes()}},handleButton:function(t,e){return!!(this.handlePress(t,e)|this.handleTouch(t,e)|this.handleValue(t,e))&&(this.el.emit(EVENTS.BUTTONCHANGED,this.buttonEventDetails[t],!1),!0)},handleAxes:function(){var t,e=!1,s=this.controller.gamepad.axes,n=this.axis,i=this.changedAxes;for(this.changedAxes.splice(0,this.changedAxes.length),t=0;t<s.length;++t)i.push(n[t]!==s[t]),i[t]&&(e=!0);if(!e)return!1;for(this.axis.splice(0,this.axis.length),t=0;t<s.length;t++)this.axis.push(s[t]);return this.el.emit(EVENTS.AXISMOVE,this.axisMoveEventDetail,!1),!0},handlePress:function(t,e){var s,n=this.buttonStates[t];return e.pressed!==n.pressed&&(s=e.pressed?EVENTS.BUTTONDOWN:EVENTS.BUTTONUP,this.el.emit(s,this.buttonEventDetails[t],!1),n.pressed=e.pressed,!0)},handleTouch:function(t,e){var s,n=this.buttonStates[t];return e.touched!==n.touched&&(s=e.touched?EVENTS.TOUCHSTART:EVENTS.TOUCHEND,this.el.emit(s,this.buttonEventDetails[t],!1),n.touched=e.touched,!0)},handleValue:function(t,e){var s=this.buttonStates[t];return e.value!==s.value&&(s.value=e.value,!0)}});
},{"../core/component":135,"../utils/tracked-controls":219}],120:[function(require,module,exports){
var registerComponent=require("../core/component").registerComponent;module.exports.Component=registerComponent("tracked-controls",{schema:{autoHide:{default:!0},controller:{default:-1},id:{type:"string",default:""},hand:{type:"string",default:""},idPrefix:{type:"string",default:""},handTrackingEnabled:{default:!1},orientationOffset:{type:"vec3"},armModel:{default:!1},headElement:{type:"selector"},iterateControllerProfiles:{default:!1}},update:function(){var e=this.data,t=this.el;t.sceneEl.hasWebXR?t.setAttribute("tracked-controls-webxr",{id:e.id,hand:e.hand,index:e.controller,iterateControllerProfiles:e.iterateControllerProfiles,handTrackingEnabled:e.handTrackingEnabled}):t.setAttribute("tracked-controls-webvr",e)}});
},{"../core/component":135}],121:[function(require,module,exports){
var registerComponent=require("../core/component").registerComponent,bind=require("../utils/bind"),THREE=require("../lib/three"),trackedControlsUtils=require("../utils/tracked-controls"),checkControllerPresentAndSetup=trackedControlsUtils.checkControllerPresentAndSetup,emitIfAxesChanged=trackedControlsUtils.emitIfAxesChanged,onButtonEvent=trackedControlsUtils.onButtonEvent,INDEX_CONTROLLER_MODEL_BASE_URL="https://cdn.aframe.io/controllers/valve/index/valve-index-",INDEX_CONTROLLER_MODEL_URL={left:INDEX_CONTROLLER_MODEL_BASE_URL+"left.glb",right:INDEX_CONTROLLER_MODEL_BASE_URL+"right.glb"},GAMEPAD_ID_PREFIX="valve",isWebXRAvailable=require("../utils/").device.isWebXRAvailable,INDEX_CONTROLLER_POSITION_OFFSET_WEBVR={left:{x:-.00023692678902063457,y:.04724540367838371,z:-.061959880395271096},right:{x:.002471558599671131,y:.055765208987076195,z:-.061068168708348844}},INDEX_CONTROLLER_POSITION_OFFSET_WEBXR={left:{x:0,y:-.05,z:.06},right:{x:0,y:-.05,z:.06}},INDEX_CONTROLLER_ROTATION_OFFSET_WEBVR={left:{_x:.692295102620542,_y:-.0627618864318427,_z:-.06265893149611756,_order:"XYZ"},right:{_x:.6484021229942998,_y:-.032563619881892894,_z:-.1327973171917482,_order:"XYZ"}},INDEX_CONTROLLER_ROTATION_OFFSET_WEBXR={left:{_x:Math.PI/3,_y:0,_z:0,_order:"XYZ"},right:{_x:Math.PI/3,_y:0,_z:0,_order:"XYZ"}},INDEX_CONTROLLER_ROTATION_OFFSET=isWebXRAvailable?INDEX_CONTROLLER_ROTATION_OFFSET_WEBXR:INDEX_CONTROLLER_ROTATION_OFFSET_WEBVR,INDEX_CONTROLLER_POSITION_OFFSET=isWebXRAvailable?INDEX_CONTROLLER_POSITION_OFFSET_WEBXR:INDEX_CONTROLLER_POSITION_OFFSET_WEBVR;module.exports.Component=registerComponent("valve-index-controls",{schema:{hand:{default:"left"},buttonColor:{type:"color",default:"#FAFAFA"},buttonHighlightColor:{type:"color",default:"#22D1EE"},model:{default:!0},orientationOffset:{type:"vec3"}},mapping:{axes:{trackpad:[0,1],thumbstick:[2,3]},buttons:["trigger","grip","trackpad","thumbstick","abutton"]},init:function(){var t=this;this.controllerPresent=!1,this.lastControllerCheck=0,this.onButtonChanged=bind(this.onButtonChanged,this),this.onButtonDown=function(e){onButtonEvent(e.detail.id,"down",t)},this.onButtonUp=function(e){onButtonEvent(e.detail.id,"up",t)},this.onButtonTouchEnd=function(e){onButtonEvent(e.detail.id,"touchend",t)},this.onButtonTouchStart=function(e){onButtonEvent(e.detail.id,"touchstart",t)},this.previousButtonValues={},this.rendererSystem=this.el.sceneEl.systems.renderer,this.bindMethods()},play:function(){this.checkIfControllerPresent(),this.addControllersUpdateListener()},pause:function(){this.removeEventListeners(),this.removeControllersUpdateListener()},bindMethods:function(){this.onModelLoaded=bind(this.onModelLoaded,this),this.onControllersUpdate=bind(this.onControllersUpdate,this),this.checkIfControllerPresent=bind(this.checkIfControllerPresent,this),this.removeControllersUpdateListener=bind(this.removeControllersUpdateListener,this),this.onAxisMoved=bind(this.onAxisMoved,this)},addEventListeners:function(){var t=this.el;t.addEventListener("buttonchanged",this.onButtonChanged),t.addEventListener("buttondown",this.onButtonDown),t.addEventListener("buttonup",this.onButtonUp),t.addEventListener("touchend",this.onButtonTouchEnd),t.addEventListener("touchstart",this.onButtonTouchStart),t.addEventListener("model-loaded",this.onModelLoaded),t.addEventListener("axismove",this.onAxisMoved),this.controllerEventsActive=!0},removeEventListeners:function(){var t=this.el;t.removeEventListener("buttonchanged",this.onButtonChanged),t.removeEventListener("buttondown",this.onButtonDown),t.removeEventListener("buttonup",this.onButtonUp),t.removeEventListener("touchend",this.onButtonTouchEnd),t.removeEventListener("touchstart",this.onButtonTouchStart),t.removeEventListener("model-loaded",this.onModelLoaded),t.removeEventListener("axismove",this.onAxisMoved),this.controllerEventsActive=!1},checkIfControllerPresent:function(){var t=this.data,e="right"===t.hand?0:"left"===t.hand?1:2;checkControllerPresentAndSetup(this,GAMEPAD_ID_PREFIX,{index:e,iterateControllerProfiles:!0,hand:t.hand})},injectTrackedControls:function(){var t=this.el,e=this.data;t.setAttribute("tracked-controls",{idPrefix:GAMEPAD_ID_PREFIX,controller:"right"===e.hand?1:"left"===e.hand?0:2,hand:e.hand,orientationOffset:e.orientationOffset}),this.loadModel()},loadModel:function(){var t=this.data;t.model&&this.el.setAttribute("gltf-model",""+INDEX_CONTROLLER_MODEL_URL[t.hand])},addControllersUpdateListener:function(){this.el.sceneEl.addEventListener("controllersupdated",this.onControllersUpdate,!1)},removeControllersUpdateListener:function(){this.el.sceneEl.removeEventListener("controllersupdated",this.onControllersUpdate,!1)},onControllersUpdate:function(){this.checkIfControllerPresent()},onButtonChanged:function(t){var e,n=this.mapping.buttons[t.detail.id],o=this.buttonMeshes;n&&("trigger"===n&&(e=t.detail.state.value,o&&o.trigger&&(o.trigger.rotation.x=this.triggerOriginalRotationX-e*(Math.PI/40))),this.el.emit(n+"changed",t.detail.state))},onModelLoaded:function(t){var e,n=t.detail.model,o=this;this.data.model&&(e=this.buttonMeshes={},e.grip={left:n.getObjectByName("leftgrip"),right:n.getObjectByName("rightgrip")},e.menu=n.getObjectByName("menubutton"),e.system=n.getObjectByName("systembutton"),e.trackpad=n.getObjectByName("touchpad"),e.trigger=n.getObjectByName("trigger"),this.triggerOriginalRotationX=e.trigger.rotation.x,Object.keys(e).forEach(function(t){o.setButtonColor(t,o.data.buttonColor)}),n.position.copy(INDEX_CONTROLLER_POSITION_OFFSET[this.data.hand]),n.rotation.copy(INDEX_CONTROLLER_ROTATION_OFFSET[this.data.hand]),this.el.emit("controllermodelready",{name:"valve-index-controlls",model:this.data.model,rayOrigin:new THREE.Vector3(0,0,0)}))},onAxisMoved:function(t){emitIfAxesChanged(this,this.mapping.axes,t)},updateModel:function(t,e){var n;this.data.model&&(-1!==e.indexOf("touch")||(n="up"===e?this.data.buttonColor:this.data.buttonHighlightColor,this.setButtonColor(t,n)))},setButtonColor:function(t,e){}});
},{"../core/component":135,"../lib/three":183,"../utils/":210,"../utils/bind":204,"../utils/tracked-controls":219}],122:[function(require,module,exports){
var registerComponent=require("../core/component").registerComponent;module.exports.Component=registerComponent("visible",{schema:{default:!0},update:function(){this.el.object3D.visible=this.data}});
},{"../core/component":135}],123:[function(require,module,exports){
var registerComponent=require("../core/component").registerComponent,bind=require("../utils/bind"),trackedControlsUtils=require("../utils/tracked-controls"),checkControllerPresentAndSetup=trackedControlsUtils.checkControllerPresentAndSetup,emitIfAxesChanged=trackedControlsUtils.emitIfAxesChanged,onButtonEvent=trackedControlsUtils.onButtonEvent,VIVE_CONTROLLER_MODEL_OBJ_URL="https://cdn.aframe.io/controllers/vive/vr_controller_vive.obj",VIVE_CONTROLLER_MODEL_OBJ_MTL="https://cdn.aframe.io/controllers/vive/vr_controller_vive.mtl",isWebXRAvailable=require("../utils/").device.isWebXRAvailable,GAMEPAD_ID_WEBXR="htc-vive",GAMEPAD_ID_WEBVR="OpenVR ",GAMEPAD_ID_PREFIX=isWebXRAvailable?GAMEPAD_ID_WEBXR:GAMEPAD_ID_WEBVR,INPUT_MAPPING_WEBVR={axes:{trackpad:[0,1]},buttons:["trackpad","trigger","grip","menu","system"]},INPUT_MAPPING_WEBXR={axes:{thumbstick:[0,1]},buttons:["trigger","grip","trackpad","none","menu"]},INPUT_MAPPING=isWebXRAvailable?INPUT_MAPPING_WEBXR:INPUT_MAPPING_WEBVR;module.exports.Component=registerComponent("vive-controls",{schema:{hand:{default:"left"},buttonColor:{type:"color",default:"#FAFAFA"},buttonHighlightColor:{type:"color",default:"#22D1EE"},model:{default:!0},orientationOffset:{type:"vec3"}},mapping:INPUT_MAPPING,init:function(){var t=this;this.controllerPresent=!1,this.lastControllerCheck=0,this.onButtonChanged=bind(this.onButtonChanged,this),this.onButtonDown=function(e){onButtonEvent(e.detail.id,"down",t)},this.onButtonUp=function(e){onButtonEvent(e.detail.id,"up",t)},this.onButtonTouchEnd=function(e){onButtonEvent(e.detail.id,"touchend",t)},this.onButtonTouchStart=function(e){onButtonEvent(e.detail.id,"touchstart",t)},this.previousButtonValues={},this.rendererSystem=this.el.sceneEl.systems.renderer,this.bindMethods()},update:function(){var t=this.data;this.controllerIndex="right"===t.hand?0:"left"===t.hand?1:2},play:function(){this.checkIfControllerPresent(),this.addControllersUpdateListener()},pause:function(){this.removeEventListeners(),this.removeControllersUpdateListener()},bindMethods:function(){this.onModelLoaded=bind(this.onModelLoaded,this),this.onControllersUpdate=bind(this.onControllersUpdate,this),this.checkIfControllerPresent=bind(this.checkIfControllerPresent,this),this.removeControllersUpdateListener=bind(this.removeControllersUpdateListener,this),this.onAxisMoved=bind(this.onAxisMoved,this)},addEventListeners:function(){var t=this.el;t.addEventListener("buttonchanged",this.onButtonChanged),t.addEventListener("buttondown",this.onButtonDown),t.addEventListener("buttonup",this.onButtonUp),t.addEventListener("touchend",this.onButtonTouchEnd),t.addEventListener("touchstart",this.onButtonTouchStart),t.addEventListener("model-loaded",this.onModelLoaded),t.addEventListener("axismove",this.onAxisMoved),this.controllerEventsActive=!0},removeEventListeners:function(){var t=this.el;t.removeEventListener("buttonchanged",this.onButtonChanged),t.removeEventListener("buttondown",this.onButtonDown),t.removeEventListener("buttonup",this.onButtonUp),t.removeEventListener("touchend",this.onButtonTouchEnd),t.removeEventListener("touchstart",this.onButtonTouchStart),t.removeEventListener("model-loaded",this.onModelLoaded),t.removeEventListener("axismove",this.onAxisMoved),this.controllerEventsActive=!1},checkIfControllerPresent:function(){var t=this.data;checkControllerPresentAndSetup(this,GAMEPAD_ID_PREFIX,{index:this.controllerIndex,hand:t.hand})},injectTrackedControls:function(){var t=this.el,e=this.data;t.setAttribute("tracked-controls",{idPrefix:GAMEPAD_ID_PREFIX,hand:e.hand,controller:this.controllerIndex,orientationOffset:e.orientationOffset}),this.data.model&&this.el.setAttribute("obj-model",{obj:VIVE_CONTROLLER_MODEL_OBJ_URL,mtl:VIVE_CONTROLLER_MODEL_OBJ_MTL})},addControllersUpdateListener:function(){this.el.sceneEl.addEventListener("controllersupdated",this.onControllersUpdate,!1)},removeControllersUpdateListener:function(){this.el.sceneEl.removeEventListener("controllersupdated",this.onControllersUpdate,!1)},onControllersUpdate:function(){this.checkIfControllerPresent()},onButtonChanged:function(t){var e,o=this.mapping.buttons[t.detail.id],n=this.buttonMeshes;o&&("trigger"===o&&(e=t.detail.state.value,n&&n.trigger&&(n.trigger.rotation.x=-e*(Math.PI/12))),this.el.emit(o+"changed",t.detail.state))},onModelLoaded:function(t){var e,o=t.detail.model,n=this;this.data.model&&(e=this.buttonMeshes={},e.grip={left:o.getObjectByName("leftgrip"),right:o.getObjectByName("rightgrip")},e.menu=o.getObjectByName("menubutton"),e.system=o.getObjectByName("systembutton"),e.trackpad=o.getObjectByName("touchpad"),e.trigger=o.getObjectByName("trigger"),Object.keys(e).forEach(function(t){n.setButtonColor(t,n.data.buttonColor)}),o.position.set(0,-.015,.04))},onAxisMoved:function(t){emitIfAxesChanged(this,this.mapping.axes,t)},updateModel:function(t,e){var o;this.data.model&&(-1!==e.indexOf("touch")||(o="up"===e?this.data.buttonColor:this.data.buttonHighlightColor,this.setButtonColor(t,o)))},setButtonColor:function(t,e){var o=this.buttonMeshes,n=this.rendererSystem;if(o){if("grip"===t)return o.grip.left.material.color.set(e),o.grip.right.material.color.set(e),n.applyColorCorrection(o.grip.left.material.color),void n.applyColorCorrection(o.grip.right.material.color);o[t].material.color.set(e),n.applyColorCorrection(o[t].material.color)}}});
},{"../core/component":135,"../utils/":210,"../utils/bind":204,"../utils/tracked-controls":219}],124:[function(require,module,exports){
var registerComponent=require("../core/component").registerComponent,bind=require("../utils/bind"),trackedControlsUtils=require("../utils/tracked-controls"),checkControllerPresentAndSetup=trackedControlsUtils.checkControllerPresentAndSetup,emitIfAxesChanged=trackedControlsUtils.emitIfAxesChanged,onButtonEvent=trackedControlsUtils.onButtonEvent,GAMEPAD_ID_PREFIX="HTC Vive Focus",VIVE_FOCUS_CONTROLLER_MODEL_URL="https://cdn.aframe.io/controllers/vive/focus-controller/focus-controller.gltf";module.exports.Component=registerComponent("vive-focus-controls",{schema:{hand:{default:""},buttonTouchedColor:{type:"color",default:"#BBBBBB"},buttonHighlightColor:{type:"color",default:"#7A7A7A"},model:{default:!0},orientationOffset:{type:"vec3"},armModel:{default:!0}},mapping:{axes:{trackpad:[0,1]},buttons:["trackpad","trigger"]},bindMethods:function(){this.onModelLoaded=bind(this.onModelLoaded,this),this.onControllersUpdate=bind(this.onControllersUpdate,this),this.checkIfControllerPresent=bind(this.checkIfControllerPresent,this),this.removeControllersUpdateListener=bind(this.removeControllersUpdateListener,this),this.onAxisMoved=bind(this.onAxisMoved,this)},init:function(){var t=this;this.onButtonChanged=bind(this.onButtonChanged,this),this.onButtonDown=function(e){onButtonEvent(e.detail.id,"down",t)},this.onButtonUp=function(e){onButtonEvent(e.detail.id,"up",t)},this.onButtonTouchStart=function(e){onButtonEvent(e.detail.id,"touchstart",t)},this.onButtonTouchEnd=function(e){onButtonEvent(e.detail.id,"touchend",t)},this.controllerPresent=!1,this.lastControllerCheck=0,this.bindMethods()},addEventListeners:function(){var t=this.el;t.addEventListener("buttonchanged",this.onButtonChanged),t.addEventListener("buttondown",this.onButtonDown),t.addEventListener("buttonup",this.onButtonUp),t.addEventListener("touchstart",this.onButtonTouchStart),t.addEventListener("touchend",this.onButtonTouchEnd),t.addEventListener("model-loaded",this.onModelLoaded),t.addEventListener("axismove",this.onAxisMoved),this.controllerEventsActive=!0,this.addControllersUpdateListener()},removeEventListeners:function(){var t=this.el;t.removeEventListener("buttonchanged",this.onButtonChanged),t.removeEventListener("buttondown",this.onButtonDown),t.removeEventListener("buttonup",this.onButtonUp),t.removeEventListener("touchstart",this.onButtonTouchStart),t.removeEventListener("touchend",this.onButtonTouchEnd),t.removeEventListener("model-loaded",this.onModelLoaded),t.removeEventListener("axismove",this.onAxisMoved),this.controllerEventsActive=!1,this.removeControllersUpdateListener()},checkIfControllerPresent:function(){checkControllerPresentAndSetup(this,GAMEPAD_ID_PREFIX,this.data.hand?{hand:this.data.hand}:{})},play:function(){this.checkIfControllerPresent(),this.addControllersUpdateListener()},pause:function(){this.removeEventListeners(),this.removeControllersUpdateListener()},injectTrackedControls:function(){var t=this.el,e=this.data;t.setAttribute("tracked-controls",{armModel:e.armModel,idPrefix:GAMEPAD_ID_PREFIX,orientationOffset:e.orientationOffset}),this.data.model&&this.el.setAttribute("gltf-model",VIVE_FOCUS_CONTROLLER_MODEL_URL)},addControllersUpdateListener:function(){this.el.sceneEl.addEventListener("controllersupdated",this.onControllersUpdate,!1)},removeControllersUpdateListener:function(){this.el.sceneEl.removeEventListener("controllersupdated",this.onControllersUpdate,!1)},onControllersUpdate:function(){this.checkIfControllerPresent()},onModelLoaded:function(t){var e,o=t.detail.model;this.data.model&&(e=this.buttonMeshes={},e.trigger=o.getObjectByName("BumperKey"),e.triggerPressed=o.getObjectByName("BumperKey_Press"),e.triggerPressed&&(e.triggerPressed.visible=!1),e.trackpad=o.getObjectByName("TouchPad"),e.trackpadPressed=o.getObjectByName("TouchPad_Press"),e.trackpadPressed&&(e.trackpadPressed.visible=!1))},onButtonChanged:function(t){var e=this.mapping.buttons[t.detail.id];e&&this.el.emit(e+"changed",t.detail.state)},onAxisMoved:function(t){emitIfAxesChanged(this,this.mapping.axes,t)},updateModel:function(t,e){this.data.model&&this.updateButtonModel(t,e)},updateButtonModel:function(t,e){var o=this.buttonMeshes,n=t+"Pressed";if(o&&o[t]&&o[n]){var s;switch(e){case"down":s=this.data.buttonHighlightColor;break;case"touchstart":s=this.data.buttonTouchedColor}s&&o[n].material.color.set(s),o[n].visible=!!s,o[t].visible=!s}}});
},{"../core/component":135,"../utils/bind":204,"../utils/tracked-controls":219}],125:[function(require,module,exports){
function isEmptyObject(e){var t;for(t in e)return!1;return!0}var KEYCODE_TO_CODE=require("../constants").keyboardevent.KEYCODE_TO_CODE,registerComponent=require("../core/component").registerComponent,THREE=require("../lib/three"),utils=require("../utils/"),bind=utils.bind,shouldCaptureKeyEvent=utils.shouldCaptureKeyEvent,CLAMP_VELOCITY=1e-5,MAX_DELTA=.2,KEYS=["KeyW","KeyA","KeyS","KeyD","ArrowUp","ArrowLeft","ArrowRight","ArrowDown"];module.exports.Component=registerComponent("wasd-controls",{schema:{acceleration:{default:65},adAxis:{default:"x",oneOf:["x","y","z"]},adEnabled:{default:!0},adInverted:{default:!1},enabled:{default:!0},fly:{default:!1},wsAxis:{default:"z",oneOf:["x","y","z"]},wsEnabled:{default:!0},wsInverted:{default:!1}},init:function(){this.keys={},this.easing=1.1,this.velocity=new THREE.Vector3,this.onBlur=bind(this.onBlur,this),this.onContextMenu=bind(this.onContextMenu,this),this.onFocus=bind(this.onFocus,this),this.onKeyDown=bind(this.onKeyDown,this),this.onKeyUp=bind(this.onKeyUp,this),this.onVisibilityChange=bind(this.onVisibilityChange,this),this.attachVisibilityEventListeners()},tick:function(e,t){var i=this.data,n=this.el,s=this.velocity;(s[i.adAxis]||s[i.wsAxis]||!isEmptyObject(this.keys))&&(t/=1e3,this.updateVelocity(t),(s[i.adAxis]||s[i.wsAxis])&&n.object3D.position.add(this.getMovementVector(t)))},remove:function(){this.removeKeyEventListeners(),this.removeVisibilityEventListeners()},play:function(){this.attachKeyEventListeners()},pause:function(){this.keys={},this.removeKeyEventListeners()},updateVelocity:function(e){var t,i,n,s,o,r=this.data,a=this.keys,d=this.velocity;if(i=r.adAxis,s=r.wsAxis,e>MAX_DELTA)return d[i]=0,void(d[s]=0);var h=Math.pow(1/this.easing,60*e);0!==d[i]&&(d[i]=d[i]*h),0!==d[s]&&(d[s]=d[s]*h),Math.abs(d[i])<CLAMP_VELOCITY&&(d[i]=0),Math.abs(d[s])<CLAMP_VELOCITY&&(d[s]=0),r.enabled&&(t=r.acceleration,r.adEnabled&&(n=r.adInverted?-1:1,(a.KeyA||a.ArrowLeft)&&(d[i]-=n*t*e),(a.KeyD||a.ArrowRight)&&(d[i]+=n*t*e)),r.wsEnabled&&(o=r.wsInverted?-1:1,(a.KeyW||a.ArrowUp)&&(d[s]-=o*t*e),(a.KeyS||a.ArrowDown)&&(d[s]+=o*t*e)))},getMovementVector:function(){var e=new THREE.Vector3(0,0,0),t=new THREE.Euler(0,0,0,"YXZ");return function(i){var n,s=this.el.getAttribute("rotation"),o=this.velocity;return e.copy(o),e.multiplyScalar(i),s?(n=this.data.fly?s.x:0,t.set(THREE.Math.degToRad(n),THREE.Math.degToRad(s.y),0),e.applyEuler(t),e):e}}(),attachVisibilityEventListeners:function(){window.oncontextmenu=this.onContextMenu,window.addEventListener("blur",this.onBlur),window.addEventListener("focus",this.onFocus),document.addEventListener("visibilitychange",this.onVisibilityChange)},removeVisibilityEventListeners:function(){window.removeEventListener("blur",this.onBlur),window.removeEventListener("focus",this.onFocus),document.removeEventListener("visibilitychange",this.onVisibilityChange)},attachKeyEventListeners:function(){window.addEventListener("keydown",this.onKeyDown),window.addEventListener("keyup",this.onKeyUp)},removeKeyEventListeners:function(){window.removeEventListener("keydown",this.onKeyDown),window.removeEventListener("keyup",this.onKeyUp)},onContextMenu:function(){for(var e=Object.keys(this.keys),t=0;t<e.length;t++)delete this.keys[e[t]]},onBlur:function(){this.pause()},onFocus:function(){this.play()},onVisibilityChange:function(){document.hidden?this.onBlur():this.onFocus()},onKeyDown:function(e){var t;shouldCaptureKeyEvent(e)&&(t=e.code||KEYCODE_TO_CODE[e.keyCode],-1!==KEYS.indexOf(t)&&(this.keys[t]=!0))},onKeyUp:function(e){var t;t=e.code||KEYCODE_TO_CODE[e.keyCode],delete this.keys[t]}});
},{"../constants":127,"../core/component":135,"../lib/three":183,"../utils/":210}],126:[function(require,module,exports){
var registerComponent=require("../core/component").registerComponent,bind=require("../utils/bind"),trackedControlsUtils=require("../utils/tracked-controls"),checkControllerPresentAndSetup=trackedControlsUtils.checkControllerPresentAndSetup,emitIfAxesChanged=trackedControlsUtils.emitIfAxesChanged,onButtonEvent=trackedControlsUtils.onButtonEvent,utils=require("../utils/"),debug=utils.debug("components:windows-motion-controls:debug"),warn=utils.debug("components:windows-motion-controls:warn"),DEFAULT_HANDEDNESS=require("../constants").DEFAULT_HANDEDNESS,MODEL_BASE_URL="https://cdn.aframe.io/controllers/microsoft/",MODEL_FILENAMES={left:"left.glb",right:"right.glb",default:"universal.glb"},isWebXRAvailable=require("../utils/").device.isWebXRAvailable,GAMEPAD_ID_WEBXR="windows-mixed-reality",GAMEPAD_ID_WEBVR="Spatial Controller (Spatial Interaction Source) ",GAMEPAD_ID_PATTERN=/([0-9a-zA-Z]+-[0-9a-zA-Z]+)$/,GAMEPAD_ID_PREFIX=isWebXRAvailable?GAMEPAD_ID_WEBXR:GAMEPAD_ID_WEBVR,INPUT_MAPPING_WEBVR={axes:{thumbstick:[0,1],trackpad:[2,3]},buttons:["thumbstick","trigger","grip","menu","trackpad"],axisMeshNames:["THUMBSTICK_X","THUMBSTICK_Y","TOUCHPAD_TOUCH_X","TOUCHPAD_TOUCH_Y"],buttonMeshNames:{trigger:"SELECT",menu:"MENU",grip:"GRASP",thumbstick:"THUMBSTICK_PRESS",trackpad:"TOUCHPAD_PRESS"},pointingPoseMeshName:"POINTING_POSE"},INPUT_MAPPING_WEBXR={axes:{touchpad:[0,1],thumbstick:[2,3]},buttons:["trigger","squeeze","touchpad","thumbstick","menu"],axisMeshNames:["TOUCHPAD_TOUCH_X","TOUCHPAD_TOUCH_X","THUMBSTICK_X","THUMBSTICK_Y"],buttonMeshNames:{trigger:"SELECT",menu:"MENU",squeeze:"GRASP",thumbstick:"THUMBSTICK_PRESS",touchpad:"TOUCHPAD_PRESS"},pointingPoseMeshName:"POINTING_POSE"},INPUT_MAPPING=isWebXRAvailable?INPUT_MAPPING_WEBXR:INPUT_MAPPING_WEBVR;module.exports.Component=registerComponent("windows-motion-controls",{schema:{hand:{default:DEFAULT_HANDEDNESS},pair:{default:0},model:{default:!0},hideDisconnected:{default:!0}},mapping:INPUT_MAPPING,bindMethods:function(){this.onModelError=bind(this.onModelError,this),this.onModelLoaded=bind(this.onModelLoaded,this),this.onControllersUpdate=bind(this.onControllersUpdate,this),this.checkIfControllerPresent=bind(this.checkIfControllerPresent,this),this.onAxisMoved=bind(this.onAxisMoved,this)},init:function(){var e=this,t=this.el;this.onButtonChanged=bind(this.onButtonChanged,this),this.onButtonDown=function(t){onButtonEvent(t.detail.id,"down",e)},this.onButtonUp=function(t){onButtonEvent(t.detail.id,"up",e)},this.onButtonTouchStart=function(t){onButtonEvent(t.detail.id,"touchstart",e)},this.onButtonTouchEnd=function(t){onButtonEvent(t.detail.id,"touchend",e)},this.onControllerConnected=function(){e.setModelVisibility(!0)},this.onControllerDisconnected=function(){e.setModelVisibility(!1)},this.controllerPresent=!1,this.lastControllerCheck=0,this.previousButtonValues={},this.bindMethods(),this.loadedMeshInfo={buttonMeshes:null,axisMeshes:null},this.rayOrigin={origin:new THREE.Vector3,direction:new THREE.Vector3(0,0,-1),createdFromMesh:!1},t.addEventListener("controllerconnected",this.onControllerConnected),t.addEventListener("controllerdisconnected",this.onControllerDisconnected)},addEventListeners:function(){var e=this.el;e.addEventListener("buttonchanged",this.onButtonChanged),e.addEventListener("buttondown",this.onButtonDown),e.addEventListener("buttonup",this.onButtonUp),e.addEventListener("touchstart",this.onButtonTouchStart),e.addEventListener("touchend",this.onButtonTouchEnd),e.addEventListener("axismove",this.onAxisMoved),e.addEventListener("model-error",this.onModelError),e.addEventListener("model-loaded",this.onModelLoaded),this.controllerEventsActive=!0},removeEventListeners:function(){var e=this.el;e.removeEventListener("buttonchanged",this.onButtonChanged),e.removeEventListener("buttondown",this.onButtonDown),e.removeEventListener("buttonup",this.onButtonUp),e.removeEventListener("touchstart",this.onButtonTouchStart),e.removeEventListener("touchend",this.onButtonTouchEnd),e.removeEventListener("axismove",this.onAxisMoved),e.removeEventListener("model-error",this.onModelError),e.removeEventListener("model-loaded",this.onModelLoaded),this.controllerEventsActive=!1},checkIfControllerPresent:function(){checkControllerPresentAndSetup(this,GAMEPAD_ID_PREFIX,{hand:this.data.hand,index:this.data.pair,iterateControllerProfiles:!0})},play:function(){this.checkIfControllerPresent(),this.addControllersUpdateListener()},pause:function(){this.removeEventListeners(),this.removeControllersUpdateListener()},updateControllerModel:function(){if(!this.data.model||this.rayOrigin.createdFromMesh)return void this.modelReady();var e=this.createControllerModelUrl();this.loadModel(e)},createControllerModelUrl:function(e){var t,n=this.el.components["tracked-controls"],o=n?n.controller:null,i="default",s=this.data.hand;if(o&&!window.hasNativeWebXRImplementation&&(s=o.hand,!e)){var r=o.id.match(GAMEPAD_ID_PATTERN);i=r&&r[0]||i}return t=MODEL_FILENAMES[s]||MODEL_FILENAMES.default,MODEL_BASE_URL+i+"/"+t},injectTrackedControls:function(){var e=this.data;this.el.setAttribute("tracked-controls",{idPrefix:GAMEPAD_ID_PREFIX,controller:e.pair,hand:e.hand,armModel:!1}),this.updateControllerModel()},addControllersUpdateListener:function(){this.el.sceneEl.addEventListener("controllersupdated",this.onControllersUpdate,!1)},removeControllersUpdateListener:function(){this.el.sceneEl.removeEventListener("controllersupdated",this.onControllersUpdate,!1)},onControllersUpdate:function(){this.checkIfControllerPresent()},onModelError:function(e){var t=this.createControllerModelUrl(!0);e.detail.src!==t?(warn("Failed to load controller model for device, attempting to load default."),this.loadModel(t)):warn("Failed to load default controller model.")},loadModel:function(e){this.el.setAttribute("gltf-model","url("+e+")")},onModelLoaded:function(e){function t(e,t){for(var n=0,o=e.children.length;n<o;n++){var i=e.children[n];if(i&&i.name===t)return i}}var n,o,i,s,r=this.controllerModel=e.detail.model,a=this.loadedMeshInfo;if(debug("Processing model"),a.buttonMeshes={},a.axisMeshes={},r){for(n=0;n<this.mapping.buttons.length;n++)o=this.mapping.buttonMeshNames[this.mapping.buttons[n]],o?(i=r.getObjectByName(o),i?(s={index:n,value:t(i,"VALUE"),pressed:t(i,"PRESSED"),unpressed:t(i,"UNPRESSED")},s.value&&s.pressed&&s.unpressed?a.buttonMeshes[this.mapping.buttons[n]]=s:warn("Missing button submesh under mesh with name: "+o+"(VALUE: "+!!s.value+", PRESSED: "+!!s.pressed+", UNPRESSED:"+!!s.unpressed+")")):warn("Missing button mesh with name: "+o)):debug("Skipping unknown button at index: "+n+" with mapped name: "+this.mapping.buttons[n]);for(n=0;n<this.mapping.axisMeshNames.length;n++)o=this.mapping.axisMeshNames[n],o?(i=r.getObjectByName(o),i?(s={index:n,value:t(i,"VALUE"),min:t(i,"MIN"),max:t(i,"MAX")},s.value&&s.min&&s.max?a.axisMeshes[n]=s:warn("Missing axis submesh under mesh with name: "+o+"(VALUE: "+!!s.value+", MIN: "+!!s.min+", MAX:"+!!s.max+")")):warn("Missing axis mesh with name: "+o)):debug("Skipping unknown axis at index: "+n);this.calculateRayOriginFromMesh(r),this.setModelVisibility()}debug("Model load complete.")},calculateRayOriginFromMesh:function(){var e=new THREE.Quaternion;return function(t){var n;if(this.rayOrigin.origin.set(0,0,0),this.rayOrigin.direction.set(0,0,-1),this.rayOrigin.createdFromMesh=!0,n=t.getObjectByName(this.mapping.pointingPoseMeshName)){var o=t.parent;o&&(t.parent=null,t.updateMatrixWorld(!0),t.parent=o),n.getWorldPosition(this.rayOrigin.origin),n.getWorldQuaternion(e),this.rayOrigin.direction.applyQuaternion(e),o&&t.updateMatrixWorld(!0)}else debug("Mesh does not contain pointing origin data, defaulting to none.");this.modelReady()}}(),lerpAxisTransform:function(){var e=new THREE.Quaternion;return function(t,n){var o=this.loadedMeshInfo.axisMeshes[t];if(o){var i=o.min,s=o.max,r=o.value,a=.5*n+.5;r.setRotationFromQuaternion(e.copy(i.quaternion).slerp(s.quaternion,a)),r.position.lerpVectors(i.position,s.position,a)}}}(),lerpButtonTransform:function(){var e=new THREE.Quaternion;return function(t,n){var o=this.loadedMeshInfo.buttonMeshes[t];if(o){var i=o.unpressed,s=o.pressed,r=o.value;r.setRotationFromQuaternion(e.copy(i.quaternion).slerp(s.quaternion,n)),r.position.lerpVectors(i.position,s.position,n)}}}(),modelReady:function(){this.el.emit("controllermodelready",{name:"windows-motion-controls",model:this.data.model,rayOrigin:this.rayOrigin})},onButtonChanged:function(e){var t=this.mapping.buttons[e.detail.id];t&&(this.loadedMeshInfo&&this.loadedMeshInfo.buttonMeshes&&this.lerpButtonTransform(t,e.detail.state.value),this.el.emit(t+"changed",e.detail.state))},onAxisMoved:function(e){var t=this.mapping.axisMeshNames.length;if(this.loadedMeshInfo&&this.loadedMeshInfo.axisMeshes)for(var n=0;n<t;n++)this.lerpAxisTransform(n,e.detail.axis[n]||0);emitIfAxesChanged(this,this.mapping.axes,e)},setModelVisibility:function(e){var t=this.el.getObject3D("mesh");e=void 0!==e?e:this.modelVisible,this.modelVisible=e,t&&(t.visible=e)}});
},{"../constants":127,"../core/component":135,"../utils/":210,"../utils/bind":204,"../utils/tracked-controls":219}],127:[function(require,module,exports){
module.exports={AFRAME_INJECTED:"aframe-injected",DEFAULT_CAMERA_HEIGHT:1.6,DEFAULT_HANDEDNESS:"right",keyboardevent:require("./keyboardevent")};
},{"./keyboardevent":128}],128:[function(require,module,exports){
module.exports={KEYCODE_TO_CODE:{38:"ArrowUp",37:"ArrowLeft",40:"ArrowDown",39:"ArrowRight",87:"KeyW",65:"KeyA",83:"KeyS",68:"KeyD"}};
},{}],129:[function(require,module,exports){
function mediaElementLoaded(e){if(e.hasAttribute("autoplay")||"auto"===e.getAttribute("preload"))return new Promise(function(t,r){function i(){for(var r=0,i=0;i<e.buffered.length;i++)r+=e.buffered.end(i)-e.buffered.start(i);r>=e.duration&&("VIDEO"===e.tagName&&THREE.Cache.add(e.getAttribute("src"),e),t())}return 4===e.readyState?t():e.error?r():(e.addEventListener("loadeddata",i,!1),e.addEventListener("progress",i,!1),void e.addEventListener("error",r,!1))})}function fixUpMediaElement(e){var t=setCrossOrigin(e);return t.tagName&&"video"===t.tagName.toLowerCase()&&(t.setAttribute("playsinline",""),t.setAttribute("webkit-playsinline","")),t!==e&&(e.parentNode.appendChild(t),e.parentNode.removeChild(e)),t}function setCrossOrigin(e){var t;if(e.hasAttribute("crossorigin"))return e;if(null!==(t=e.getAttribute("src"))){if(-1===t.indexOf("://"))return e;if(extractDomain(t)===window.location.host)return e}return warn('Cross-origin element (e.g., <img>) was requested without `crossorigin` set. A-Frame will re-request the asset with `crossorigin` attribute set. Please set `crossorigin` on the element (e.g., <img crossorigin="anonymous">)',t),e.crossOrigin="anonymous",e.cloneNode(!0)}function extractDomain(e){var t=e.indexOf("://")>-1?e.split("/")[2]:e.split("/")[0];return t.substring(0,t.indexOf(":"))}function inferResponseType(e){var t=getFileNameFromURL(e),r=t.lastIndexOf(".");if(r>=0){if(".glb"===t.slice(r,e.search(/\?|#|$/)))return"arraybuffer"}return"text"}function getFileNameFromURL(e){var t=document.createElement("a");t.href=e;var r=t.search.replace(/^\?/,""),i=e.replace(r,"").replace("?","");return i.substring(i.lastIndexOf("/")+1)}var ANode=require("./a-node"),bind=require("../utils/bind"),debug=require("../utils/debug"),registerElement=require("./a-register-element").registerElement,THREE=require("../lib/three"),fileLoader=new THREE.FileLoader,warn=debug("core:a-assets:warn");module.exports=registerElement("a-assets",{prototype:Object.create(ANode.prototype,{createdCallback:{value:function(){this.isAssets=!0,this.fileLoader=fileLoader,this.timeout=null}},attachedCallback:{value:function(){var e,t,r,i,a,o,s=this,n=[];if(!this.parentNode.isScene)throw new Error("<a-assets> must be a child of a <a-scene>.");for(a=this.querySelectorAll("img"),e=0;e<a.length;e++)i=fixUpMediaElement(a[e]),n.push(new Promise(function(t,r){THREE.Cache.add(a[e].getAttribute("src"),i),i.onload=t,i.onerror=r}));for(r=this.querySelectorAll("audio, video"),e=0;e<r.length;e++)t=fixUpMediaElement(r[e]),t.src||t.srcObject||warn("Audio/video asset has neither `src` nor `srcObject` attributes."),n.push(mediaElementLoaded(t));Promise.all(n).then(bind(this.load,this)),o=parseInt(this.getAttribute("timeout"),10)||3e3,this.timeout=setTimeout(function(){s.hasLoaded||(warn("Asset loading timed out in ",o,"ms"),s.emit("timeout"),s.load())},o)}},detachedCallback:{value:function(){this.timeout&&clearTimeout(this.timeout)}},load:{value:function(){ANode.prototype.load.call(this,null,function(e){return e.isAssetItem&&e.hasAttribute("src")})}}})}),registerElement("a-asset-item",{prototype:Object.create(ANode.prototype,{createdCallback:{value:function(){this.data=null,this.isAssetItem=!0}},attachedCallback:{value:function(){var e=this,t=this.getAttribute("src");fileLoader.setResponseType(this.getAttribute("response-type")||inferResponseType(t)),fileLoader.load(t,function(t){e.data=t,setTimeout(function(){ANode.prototype.load.call(e)})},function(t){e.emit("progress",{loadedBytes:t.loaded,totalBytes:t.total,xhr:t})},function(t){e.emit("error",{xhr:t})})}}})}),module.exports.inferResponseType=inferResponseType,module.exports.getFileNameFromURL=getFileNameFromURL;
},{"../lib/three":183,"../utils/bind":204,"../utils/debug":206,"./a-node":133,"./a-register-element":134}],130:[function(require,module,exports){
var debug=require("../utils/debug"),registerElement=require("./a-register-element").registerElement,warn=debug("core:cubemap:warn");module.exports=registerElement("a-cubemap",{prototype:Object.create(window.HTMLElement.prototype,{attachedCallback:{value:function(){this.srcs=this.validate()},writable:window.debug},validate:{value:function(){var e,t=this.querySelectorAll("[src]"),r=[];if(6===t.length){for(e=0;e<t.length;e++)r.push(t[e].getAttribute("src"));return r}warn("<a-cubemap> did not contain exactly six elements each with a `src` attribute.")},writable:window.debug}})});
},{"../utils/debug":206,"./a-register-element":134}],131:[function(require,module,exports){
function checkComponentDefined(t,e){return!(!t.components[e]||!t.components[e].attrValue)||isComponentMixedIn(e,t.mixinEls)}function isComponentMixedIn(t,e){var i,n=!1;for(i=0;i<e.length&&!(n=e[i].hasAttribute(t));++i);return n}function mergeComponentData(t,e){return e?e.constructor===Object?utils.extend(e,utils.styleParser.parse(t||{})):t||e:t}function isComponent(t){return-1!==t.indexOf(MULTIPLE_COMPONENT_DELIMITER)&&(t=utils.split(t,MULTIPLE_COMPONENT_DELIMITER)[0]),!!COMPONENTS[t]}function getRotation(t){var e=THREE.Math.radToDeg,i=t.object3D.rotation,n=t.rotationObj;return n.x=e(i.x),n.y=e(i.y),n.z=e(i.z),n}var ANode=require("./a-node"),COMPONENTS=require("./component").components,registerElement=require("./a-register-element").registerElement,THREE=require("../lib/three"),utils=require("../utils/"),AEntity,debug=utils.debug("core:a-entity:debug"),warn=utils.debug("core:a-entity:warn"),MULTIPLE_COMPONENT_DELIMITER="__",OBJECT3D_COMPONENTS=["position","rotation","scale","visible"],ONCE={once:!0},proto=Object.create(ANode.prototype,{createdCallback:{value:function(){this.components={},this.initializingComponents={},this.componentsToUpdate={},this.isEntity=!0,this.isPlaying=!1,this.object3D=new THREE.Group,this.object3D.el=this,this.object3DMap={},this.parentEl=null,this.rotationObj={},this.states=[]}},attributeChangedCallback:{value:function(t,e,i){var n=this.components[t];if(n&&n.justInitialized&&""===i)return void delete n.justInitialized;(n||null!==i)&&this.setEntityAttribute(t,e,i)}},attachedCallback:{value:function(){var t,e=this.sceneEl,i=this;if(this.addToParent(),!this.isScene){if(!e)return void this.load();if((t=e.querySelector("a-assets"))&&!t.hasLoaded)return void t.addEventListener("loaded",function(){i.load()});this.load()}}},detachedCallback:{value:function(){var t;if(this.parentEl){for(t in this.components)this.removeComponent(t,!1);this.isScene||(this.removeFromParent(),ANode.prototype.detachedCallback.call(this),this.object3D.el=null)}}},getObject3D:{value:function(t){return this.object3DMap[t]}},setObject3D:{value:function(t,e){var i,n=this;if(!(e instanceof THREE.Object3D))throw new Error("`Entity.setObject3D` was called with an object that was not an instance of THREE.Object3D.");i=this.getObject3D(t),i&&this.object3D.remove(i),e.el=this,e.children.length&&e.traverse(function(t){t.el=n}),this.object3D.add(e),this.object3DMap[t]=e,this.emit("object3dset",{object:e,type:t})}},removeObject3D:{value:function(t){var e=this.getObject3D(t);if(!e)return void warn("Tried to remove `Object3D` of type:",t,"which was not defined.");this.object3D.remove(e),delete this.object3DMap[t],this.emit("object3dremove",{type:t})}},getOrCreateObject3D:{value:function(t,e){var i=this.getObject3D(t);return!i&&e&&(i=new e,this.setObject3D(t,i)),warn("`getOrCreateObject3D` has been deprecated. Use `setObject3D()` and `object3dset` event instead."),i}},add:{value:function(t){if(!t.object3D)throw new Error("Trying to add an element that doesn't have an `object3D`");this.object3D.add(t.object3D),this.emit("child-attached",{el:t})}},addToParent:{value:function(){var t=this.parentEl=this.parentNode;t&&t.add&&!this.attachedToParent&&(t.add(this),this.attachedToParent=!0)}},removeFromParent:{value:function(){var t=this.parentEl;this.parentEl.remove(this),this.attachedToParent=!1,this.parentEl=null,t.emit("child-detached",{el:this})}},load:{value:function(){var t=this;!this.hasLoaded&&this.parentEl&&ANode.prototype.load.call(this,function(){t.parentEl&&(t.updateComponents(),(t.isScene||t.parentEl.isPlaying)&&t.play())})},writable:window.debug},remove:{value:function(t){t?this.object3D.remove(t.object3D):this.parentNode.removeChild(this)}},getChildEntities:{value:function(){for(var t=this.children,e=[],i=0;i<t.length;i++){var n=t[i];n instanceof AEntity&&e.push(n)}return e}},initComponent:{value:function(t,e,i){var n,o,s,a;if(s=utils.split(t,MULTIPLE_COMPONENT_DELIMITER),a=s[0],o=s.length>2?s.slice(1).join("__"):s[1],COMPONENTS[a]&&(checkComponentDefined(this,t)||void 0!==e||i)&&!(t in this.components)){if(this.initComponentDependencies(a),o&&!COMPONENTS[a].multiple)throw new Error("Trying to initialize multiple components of type `"+a+"`. There can only be one component of this type per entity.");n=new COMPONENTS[a].Component(this,e,o),this.isPlaying&&n.play(),this.hasAttribute(t)||(n.justInitialized=!0,window.HTMLElement.prototype.setAttribute.call(this,t,"")),debug("Component initialized: %s",t)}},writable:window.debug},initComponentDependencies:{value:function(t){var e,i,n=this,o=COMPONENTS[t];if(o&&(e=COMPONENTS[t].dependencies))for(i=0;i<e.length;i++)n.initComponent(e[i],window.HTMLElement.prototype.getAttribute.call(n,e[i])||void 0,!0)}},removeComponent:{value:function(t,e){var i;if(i=this.components[t]){if(!i.initialized)return void this.addEventListener("componentinitialized",function i(n){n.detail.name===t&&(this.removeComponent(t,e),this.removeEventListener("componentinitialized",i))});i.pause(),i.remove(),e&&(i.destroy(),delete this.components[t]),this.emit("componentremoved",i.evtDetail,!1)}},writable:window.debug},updateComponents:{value:function(){var t,e,i,n,o=this.componentsToUpdate;if(this.hasLoaded){for(i=0;i<this.mixinEls.length;i++)for(n in this.mixinEls[i].componentCache)isComponent(n)&&(o[n]=!0);if(this.getExtraComponents){e=this.getExtraComponents();for(n in e)isComponent(n)&&(o[n]=!0)}for(i=0;i<this.attributes.length;++i)n=this.attributes[i].name,-1===OBJECT3D_COMPONENTS.indexOf(n)&&isComponent(n)&&(o[n]=!0);for(i=0;i<OBJECT3D_COMPONENTS.length;i++)n=OBJECT3D_COMPONENTS[i],this.hasAttribute(n)&&this.updateComponent(n,this.getDOMAttribute(n));for(n in o)t=mergeComponentData(this.getDOMAttribute(n),e&&e[n]),this.updateComponent(n,t),delete o[n]}},writable:window.debug},updateComponent:{value:function(t,e,i){var n=this.components[t];if(n)return null!==e||checkComponentDefined(this,t)?void n.updateProperties(e,i):void this.removeComponent(t,!0);this.initComponent(t,e,!1)}},removeAttribute:{value:function(t,e){var i=this.components[t];if(i&&void 0===e&&this.removeComponent(t,!0),i&&void 0!==e)return void i.resetProperty(e);"mixin"===t&&this.mixinUpdate(""),window.HTMLElement.prototype.removeAttribute.call(this,t)}},play:{value:function(){var t,e,i;if(!this.isPlaying&&this.hasLoaded){this.isPlaying=!0;for(i in this.components)this.components[i].play();for(t=this.getChildEntities(),e=0;e<t.length;e++)t[e].play();this.emit("play")}},writable:!0},pause:{value:function(){var t,e,i;if(this.isPlaying){this.isPlaying=!1;for(i in this.components)this.components[i].pause();for(t=this.getChildEntities(),e=0;e<t.length;e++)t[e].pause();this.emit("pause")}},writable:!0},setEntityAttribute:{value:function(t,e,i){if(COMPONENTS[t]||this.components[t])return void this.updateComponent(t,i);if("mixin"===t){if(i===this.computedMixinStr)return;this.mixinUpdate(i,e)}}},mixinUpdate:{value:function(){var t=[];return function(e,i){var n,o,s,a,r=this;if(!this.hasLoaded)return void this.addEventListener("loaded",function(){r.mixinUpdate(e,i)},ONCE);for(i=i||this.getAttribute("mixin"),s=this.updateMixins(e,i),t.length=0,a=0;a<this.mixinEls.length;a++)for(n in this.mixinEls[a].componentCache)-1===t.indexOf(n)&&(this.components[n]?this.components[n].handleMixinUpdate():this.initComponent(n,null),t.push(n));for(a=0;a<s.oldMixinIds.length;a++)if(o=document.getElementById(s.oldMixinIds[a]))for(n in o.componentCache)-1===t.indexOf(n)&&this.components[n]&&(this.getDOMAttribute(n)?this.components[n].handleMixinUpdate():this.removeComponent(n,!0))}}()},setAttribute:{value:function(){var t={};return function(e,i,n){var o,s,a,r,h,l;if(r=e.indexOf(MULTIPLE_COMPONENT_DELIMITER),a=r>0?e.substring(0,r):e,!COMPONENTS[a])return"mixin"===e&&this.mixinUpdate(i),void ANode.prototype.setAttribute.call(this,e,i);if(!this.components[e]&&this.hasAttribute(e)&&this.updateComponent(e,window.HTMLElement.prototype.getAttribute.call(this,e)),void 0!==n&&"string"==typeof i&&i.length>0&&"string"==typeof utils.styleParser.parse(i)){for(l in t)delete t[l];o=t,o[i]=n,s=!1}else o=i,s=!0===n;this.updateComponent(e,o,s),(h=this.sceneEl&&this.sceneEl.getAttribute("debug"))&&this.components[e].flushToDOM()}}(),writable:window.debug},flushToDOM:{value:function(t){var e,i,n,o=this.components,s=this.children;for(n in o)o[n].flushToDOM();if(t)for(i=0;i<s.length;++i)e=s[i],e.flushToDOM&&e.flushToDOM(t)}},getAttribute:{value:function(t){var e;return"position"===t?this.object3D.position:"rotation"===t?getRotation(this):"scale"===t?this.object3D.scale:"visible"===t?this.object3D.visible:(e=this.components[t],e?e.data:window.HTMLElement.prototype.getAttribute.call(this,t))},writable:window.debug},getDOMAttribute:{value:function(t){var e=this.components[t];return e?e.attrValue:window.HTMLElement.prototype.getAttribute.call(this,t)},writable:window.debug},addState:{value:function(t){this.is(t)||(this.states.push(t),this.emit("stateadded",t))}},removeState:{value:function(t){var e=this.states.indexOf(t);-1!==e&&(this.states.splice(e,1),this.emit("stateremoved",t))}},is:{value:function(t){return-1!==this.states.indexOf(t)}},inspect:{value:function(){this.sceneEl.components.inspector.openInspector(this)}},destroy:{value:function(){var t;if(this.parentNode)return void warn("Entity can only be destroyed if detached from scenegraph.");for(t in this.components)this.components[t].destroy()}}});AEntity=registerElement("a-entity",{prototype:proto}),module.exports=AEntity;
},{"../lib/three":183,"../utils/":210,"./a-node":133,"./a-register-element":134,"./component":135}],132:[function(require,module,exports){
var ANode=require("./a-node"),registerElement=require("./a-register-element").registerElement,components=require("./component").components,utils=require("../utils"),MULTIPLE_COMPONENT_DELIMITER="__";module.exports=registerElement("a-mixin",{prototype:Object.create(ANode.prototype,{createdCallback:{value:function(){this.componentCache={},this.id=this.getAttribute("id"),this.isMixin=!0}},attributeChangedCallback:{value:function(t,e,i){this.cacheAttribute(t,i),this.updateEntities()}},attachedCallback:{value:function(){this.sceneEl=this.closestScene(),this.cacheAttributes(),this.updateEntities(),this.load()}},setAttribute:{value:function(t,e){window.HTMLElement.prototype.setAttribute.call(this,t,e),this.cacheAttribute(t,e)}},cacheAttribute:{value:function(t,e){var i,n;n=utils.split(t,MULTIPLE_COMPONENT_DELIMITER)[0],(i=components[n])&&(void 0===e&&(e=window.HTMLElement.prototype.getAttribute.call(this,t)),this.componentCache[t]=i.parseAttrValueForCache(e))}},getAttribute:{value:function(t){return this.componentCache[t]||window.HTMLElement.prototype.getAttribute.call(this,t)}},cacheAttributes:{value:function(){var t,e,i=this.attributes;for(e=0;e<i.length;e++)t=i[e].name,this.cacheAttribute(t)}},updateEntities:{value:function(){var t,e,i;if(this.sceneEl)for(e=this.sceneEl.querySelectorAll("[mixin~="+this.id+"]"),i=0;i<e.length;i++)t=e[i],t.hasLoaded&&!t.isMixin&&t.mixinUpdate(this.id)}}})});
},{"../utils":210,"./a-node":133,"./a-register-element":134,"./component":135}],133:[function(require,module,exports){
var registerElement=require("./a-register-element").registerElement,isNode=require("./a-register-element").isNode,utils=require("../utils/"),warn=utils.debug("core:a-node:warn"),error=utils.debug("core:a-node:error");module.exports=registerElement("a-node",{prototype:Object.create(window.HTMLElement.prototype,{createdCallback:{value:function(){this.computedMixinStr="",this.hasLoaded=!1,this.isNode=!0,this.mixinEls=[]},writable:window.debug},attachedCallback:{value:function(){var t;this.sceneEl=this.closestScene(),this.sceneEl||warn("You are attempting to attach <"+this.tagName+"> outside of an A-Frame scene. Append this element to `<a-scene>` instead."),this.hasLoaded=!1,this.emit("nodeready",void 0,!1),this.isMixin||(t=this.getAttribute("mixin"))&&this.updateMixins(t)},writable:window.debug},attributeChangedCallback:{value:function(t,e,i){i!==this.computedMixinStr&&("mixin"!==t||this.isMixin||this.updateMixins(i,e))}},closestScene:{value:function(){for(var t=this;t&&!t.isScene;)t=t.parentElement;return t}},closest:{value:function(t){for(var e=this.matches||this.mozMatchesSelector||this.msMatchesSelector||this.oMatchesSelector||this.webkitMatchesSelector,i=this;i&&!e.call(i,t);)i=i.parentElement;return i}},detachedCallback:{value:function(){this.hasLoaded=!1}},load:{value:function(t,e){var i,n,s=this;this.hasLoaded||(e=e||isNode,i=this.getChildren(),n=i.filter(e).map(function(t){return new Promise(function(e){if(t.hasLoaded)return e();t.addEventListener("loaded",e)})}),Promise.all(n).then(function(){s.hasLoaded=!0,t&&t(),s.emit("loaded",void 0,!1)}).catch(function(t){error("Failure loading node: ",t)}))},writable:!0},getChildren:{value:function(){return Array.prototype.slice.call(this.children,0)}},updateMixins:{value:function(){var t=[],e=[],i={};return function(n,s){var r,a,o;for(t.length=0,e.length=0,a=n?utils.split(n.trim(),/\s+/):t,o=s?utils.split(s.trim(),/\s+/):e,i.newMixinIds=a,i.oldMixinIds=o,r=0;r<o.length;r++)-1===a.indexOf(o[r])&&this.unregisterMixin(o[r]);for(this.computedMixinStr="",this.mixinEls.length=0,r=0;r<a.length;r++)this.registerMixin(document.getElementById(a[r]));return this.computedMixinStr&&(this.computedMixinStr=this.computedMixinStr.trim(),window.HTMLElement.prototype.setAttribute.call(this,"mixin",this.computedMixinStr)),i}}()},registerMixin:{value:function(t){var e,i,n;if(t){if(n=t.getAttribute("mixin"))for(e=utils.split(n.trim(),/\s+/),i=0;i<e.length;i++)this.registerMixin(document.getElementById(e[i]));this.computedMixinStr=this.computedMixinStr+" "+t.id,this.mixinEls.push(t)}}},setAttribute:{value:function(t,e){"mixin"===t&&this.updateMixins(e),window.HTMLElement.prototype.setAttribute.call(this,t,e)}},unregisterMixin:{value:function(t){var e,i,n=this.mixinEls;for(e=0;e<n.length;++e)if(i=n[e],t===i.id){n.splice(e,1);break}}},emit:{value:function(){var t={};return function(e,i,n,s){void 0===n&&(n=!0),t.bubbles=!!n,t.detail=i,s&&(t=utils.extend({},s,t)),this.dispatchEvent(new CustomEvent(e,t))}}(),writable:window.debug}})});
},{"../utils/":210,"./a-register-element":134}],134:[function(require,module,exports){
function addTagName(e){knownTags[e.toLowerCase()]=!0}function wrapANodeMethods(e){var t={};return wrapMethods(t,["attachedCallback","attributeChangedCallback","createdCallback","detachedCallback"],e,ANode.prototype),copyProperties(e,t),t}function wrapAEntityMethods(e){var t={},o=["attachedCallback","attributeChangedCallback","createdCallback","detachedCallback"],a=["attachedCallback","attributeChangedCallback","createdCallback","detachedCallback"];return wrapMethods(t,o,e,ANode.prototype),wrapMethods(t,a,e,AEntity.prototype),copyProperties(e,t),t}function wrapMethods(e,t,o,a){t.forEach(function(t){wrapMethod(e,t,o,a)})}function wrapMethod(e,t,o,a){var r=o[t],n=a[t];r&&n&&r!==n&&(e[t]={value:function(){return n.apply(this,arguments),r.apply(this,arguments)},writable:window.debug})}function copyProperties(e,t){Object.getOwnPropertyNames(e).forEach(function(o){var a;t[o]||(a=Object.getOwnPropertyDescriptor(e,o),t[o]={value:e[o],writable:a.writable})})}require("document-register-element");var ANode,AEntity,knownTags=module.exports.knownTags={};module.exports.isNode=function(e){return e.tagName.toLowerCase()in knownTags||e.isNode},module.exports.registerElement=function(e,t){var o=Object.getPrototypeOf(t.prototype),a=t,r=ANode&&o===ANode.prototype,n=AEntity&&o===AEntity.prototype;return(r||n)&&addTagName(e),r&&(a=wrapANodeMethods(t.prototype),a={prototype:Object.create(o,a)}),n&&(a=wrapAEntityMethods(t.prototype),a={prototype:Object.create(o,a)}),Object.getOwnPropertyNames(a.prototype).forEach(function(e){var t=a.prototype[e];"function"==typeof t&&(t.displayName=e)}),document.registerElement(e,a)},module.exports.wrapMethods=wrapMethods,ANode=require("./a-node"),AEntity=require("./a-entity");
},{"./a-entity":131,"./a-node":133,"document-register-element":12}],135:[function(require,module,exports){
function eventsBind(t,e){var i;for(i in e)t.events[i]=e[i].bind(t)}function copyData(t,e){var i,s;for(s in e)void 0!==e[s]&&(i=e[s],t[s]=isObjectOrArray(i)?utils.clone(i):i);return t}function extendProperties(t,e,i){var s;if(i&&e.constructor===Object){for(s in e)void 0!==e[s]&&(e[s]&&e[s].constructor===Object?t[s]=utils.clone(e[s]):t[s]=e[s]);return t}return e}function hasBehavior(t){return t.tick||t.tock}function wrapPause(t){return function(){var e=this.el.sceneEl;this.isPlaying&&(t.call(this),this.isPlaying=!1,this.eventsDetach(),hasBehavior(this)&&e.removeBehavior(this))}}function wrapPlay(t){return function(){var e=this.el.sceneEl,i=this.el.isPlaying&&!this.isPlaying;this.initialized&&i&&(t.call(this),this.isPlaying=!0,this.eventsAttach(),hasBehavior(this)&&e.addBehavior(this))}}function isObject(t){return t&&t.constructor===Object&&!(t instanceof window.HTMLElement)}function isObjectOrArray(t){return t&&(t.constructor===Object||t.constructor===Array)&&!(t instanceof window.HTMLElement)}var schema=require("./schema"),scenes=require("./scene/scenes"),systems=require("./system"),utils=require("../utils/"),components=module.exports.components={},parseProperties=schema.parseProperties,parseProperty=schema.parseProperty,processSchema=schema.process,isSingleProp=schema.isSingleProperty,stringifyProperties=schema.stringifyProperties,stringifyProperty=schema.stringifyProperty,styleParser=utils.styleParser,warn=utils.debug("core:component:warn"),aframeScript=document.currentScript,upperCaseRegExp=new RegExp("[A-Z]+"),objectPools={},Component=module.exports.Component=function(t,e,i){var s=this;this.el=t,this.id=i,this.attrName=this.name+(i?"__"+i:""),this.evtDetail={id:this.id,name:this.name},this.initialized=!1,this.isSingleProperty=isSingleProp(this.schema),this.isSinglePropertyObject=this.isSingleProperty&&isObject(parseProperty(void 0,this.schema))&&!(this.schema.default instanceof window.HTMLElement),this.isObjectBased=!this.isSingleProperty||this.isSinglePropertyObject,this.el.components[this.attrName]=this,this.objectPool=objectPools[this.name];const a=this.events;this.events={},eventsBind(this,a),this.attrValue=void 0,this.isObjectBased?(this.nextData=this.objectPool.use(),utils.objectPool.removeUnusedKeys(this.nextData,this.schema),this.oldData=this.objectPool.use(),utils.objectPool.removeUnusedKeys(this.oldData,this.schema),this.previousOldData=this.objectPool.use(),utils.objectPool.removeUnusedKeys(this.previousOldData,this.schema),this.parsingAttrValue=this.objectPool.use(),utils.objectPool.removeUnusedKeys(this.parsingAttrValue,this.schema)):(this.nextData=void 0,this.oldData=void 0,this.previousOldData=void 0,this.parsingAttrValue=void 0),this.throttledEmitComponentChanged=utils.throttle(function(){t.emit("componentchanged",s.evtDetail,!1)},200),this.updateProperties(e)};if(Component.prototype={schema:{},init:function(){},events:{},update:function(t){},updateSchema:void 0,tick:void 0,tock:void 0,play:function(){},pause:function(){},remove:function(){},parse:function(t,e){var i=this.schema;return this.isSingleProperty?parseProperty(t,i):parseProperties(styleParser.parse(t),i,!0,this.name,e)},stringify:function(t){var e=this.schema;return"string"==typeof t?t:this.isSingleProperty?stringifyProperty(t,e):(t=stringifyProperties(t,e),styleParser.stringify(t))},updateCachedAttrValue:function(t,e){var i,s,a;if(void 0!==t){if(null===t)return this.isObjectBased&&this.attrValue&&this.objectPool.recycle(this.attrValue),void(this.attrValue=void 0);if(t instanceof Object&&!(t instanceof window.HTMLElement)?(s=this.objectPool.use(),i=utils.extend(s,t)):i=this.parseAttrValueForCache(t),this.isObjectBased&&!e&&this.attrValue)for(a in this.attrValue)void 0===i[a]&&(i[a]=this.attrValue[a]);this.isObjectBased&&!this.attrValue&&(this.attrValue=this.objectPool.use()),utils.objectPool.clearObject(this.attrValue),this.attrValue=extendProperties(this.attrValue,i,this.isObjectBased),utils.objectPool.clearObject(s)}},parseAttrValueForCache:function(t){var e;return"string"!=typeof t?t:(this.isSingleProperty?"string"==typeof(e=this.schema.parse(t))&&(e=t):(utils.objectPool.clearObject(this.parsingAttrValue),e=styleParser.parse(t,this.parsingAttrValue)),e)},flushToDOM:function(t){var e=t?this.data:this.attrValue;null!==e&&void 0!==e&&window.HTMLElement.prototype.setAttribute.call(this.el,this.attrName,this.stringify(e))},updateProperties:function(t,e){if(!this.el.hasLoaded)return void this.updateCachedAttrValue(t);null!==t&&(t=this.parseAttrValueForCache(t)),this.updateCachedAttrValue(t,e),this.initialized?(this.updateComponent(t,e),this.callUpdateHandler()):this.initComponent()},initComponent:function(){var t,e=this.el;this.updateSchema&&this.updateSchema(this.buildData(this.attrValue,!1,!0)),this.data=this.buildData(this.attrValue),e.initializingComponents[this.name]||(e.initializingComponents[this.name]=!0,this.init(),this.initialized=!0,delete e.initializingComponents[this.name],this.oldData=extendProperties(this.oldData,this.data,this.isObjectBased),t=this.isObjectBased?this.objectPool.use():void 0,this.update(t),this.isObjectBased&&this.objectPool.recycle(t),e.isPlaying&&this.play(),e.emit("componentinitialized",this.evtDetail,!1))},updateComponent:function(t,e){var i,s;if(e)return this.updateSchema&&this.updateSchema(this.buildData(this.attrValue,!0,!0)),void(this.data=this.buildData(this.attrValue,!0,!1));if(this.isSingleProperty)return this.isObjectBased&&parseProperty(t,this.schema),void(this.data=t);if(parseProperties(t,this.schema,!0,this.name),this.schemaChangeKeys.length)for(i in t)if(this.schema[i].schemaChange){s=!0;break}if(s)return this.updateSchema&&this.updateSchema(this.buildData(this.attrValue,!0,!0)),void(this.data=this.buildData(this.attrValue,!0,!1));for(i in t)void 0!==t[i]&&(this.data[i]=t[i])},callUpdateHandler:function(){var t;this.previousOldData instanceof Object&&utils.objectPool.clearObject(this.previousOldData),this.isObjectBased?copyData(this.previousOldData,this.oldData):this.previousOldData=this.oldData,t=!utils.deepEqual(this.oldData,this.data),(this.isPositionRotationScale||t)&&(this.oldData instanceof Object&&utils.objectPool.clearObject(this.oldData),this.oldData=extendProperties(this.oldData,this.data,this.isObjectBased),this.update(this.previousOldData),this.throttledEmitComponentChanged())},handleMixinUpdate:function(){this.data=this.buildData(this.attrValue),this.callUpdateHandler()},resetProperty:function(t){if(this.isObjectBased){if(!(t in this.attrValue))return;delete this.attrValue[t],this.data[t]=this.schema[t].default}else this.attrValue=this.schema.default,this.data=this.schema.default;this.updateProperties(this.attrValue)},extendSchema:function(t){var e;e=utils.extend({},components[this.name].schema),utils.extend(e,t),this.schema=processSchema(e),this.el.emit("schemachanged",this.evtDetail)},buildData:function(t,e,i){var s,a,o,r,n,h,c,l=this.nextData,p=this.schema,u=this.el.mixinEls;if(s=t&&t.constructor===Array?t.length:void 0!==t&&null!==t,this.isObjectBased&&utils.objectPool.clearObject(l),this.isSingleProperty)a=this.isObjectBased?copyData(l,p.default):isObjectOrArray(p.default)?utils.clone(p.default):p.default;else{c=!e&&this.attrValue,a=c instanceof Object?copyData(l,c):l;for(r in p)o=p[r].default,void 0===a[r]&&(a[r]=isObjectOrArray(o)?utils.clone(o):o)}for(h=0;h<u.length;h++)(n=u[h].getAttribute(this.attrName))&&(a=extendProperties(a,n,this.isObjectBased));if(s){if(this.isSingleProperty)return isObject(t)?(copyData(this.parsingAttrValue,t),parseProperty(this.parsingAttrValue,p)):parseProperty(t,p);a=extendProperties(a,t,this.isObjectBased)}else if(this.isSingleProperty)return parseProperty(a,p);return parseProperties(a,p,void 0,this.name,i)},eventsAttach:function(){var t;this.eventsDetach();for(t in this.events)this.el.addEventListener(t,this.events[t])},eventsDetach:function(){var t;for(t in this.events)this.el.removeEventListener(t,this.events[t])},destroy:function(){this.objectPool.recycle(this.attrValue),this.objectPool.recycle(this.oldData),this.objectPool.recycle(this.parsingAttrValue),this.attrValue=this.oldData=this.parsingAttrValue=void 0}},window.debug)var registrationOrderWarnings=module.exports.registrationOrderWarnings={};module.exports.registerComponent=function(t,e){var i,s,a,o,r={};if(document.currentScript&&document.currentScript!==aframeScript&&scenes.forEach(function(e){e.hasLoaded||document.currentScript.compareDocumentPosition(e)!==Node.DOCUMENT_POSITION_FOLLOWING&&(warn("The component `"+t+"` was registered in a <script> tag after the scene. Component <script> tags in an HTML file should be declared *before* the scene such that the component is available to entities during scene initialization."),window.debug&&(registrationOrderWarnings[t]=!0))}),!0===upperCaseRegExp.test(t)&&warn("The component name `"+t+"` contains uppercase characters, but HTML will ignore the capitalization of attribute names. Change the name to be lowercase: `"+t.toLowerCase()+"`"),-1!==t.indexOf("__"))throw new Error("The component name `"+t+"` is not allowed. The sequence __ (double underscore) is reserved to specify an id for multiple components of the same type");if(Object.keys(e).forEach(function(t){r[t]={value:e[t],writable:!0}}),components[t])throw new Error("The component `"+t+"` has been already registered. Check that you are not loading two versions of the same component or two different components of the same name.");if(i=function(t,e,i){Component.call(this,t,e,i)},i.prototype=Object.create(Component.prototype,r),i.prototype.name=t,i.prototype.isPositionRotationScale="position"===t||"rotation"===t||"scale"===t,i.prototype.constructor=i,i.prototype.system=systems&&systems.systems[t],i.prototype.play=wrapPlay(i.prototype.play),i.prototype.pause=wrapPause(i.prototype.pause),a=utils.extend(processSchema(i.prototype.schema,i.prototype.name)),!(o=isSingleProp(i.prototype.schema))){i.prototype.schemaChangeKeys=[];for(s in a)a[s].schemaChange&&i.prototype.schemaChangeKeys.push(s)}return objectPools[t]=utils.objectPool.createPool(),components[t]={Component:i,dependencies:i.prototype.dependencies,isSingleProp:o,multiple:i.prototype.multiple,name:t,parse:i.prototype.parse,parseAttrValueForCache:i.prototype.parseAttrValueForCache,schema:a,stringify:i.prototype.stringify,type:i.prototype.type},i};
},{"../utils/":210,"./scene/scenes":142,"./schema":144,"./system":146}],136:[function(require,module,exports){
var schema=require("./schema"),processSchema=schema.process,geometries=module.exports.geometries={},geometryNames=module.exports.geometryNames=[],THREE=require("../lib/three"),Geometry=module.exports.Geometry=function(){};Geometry.prototype={schema:{},init:function(e){return this.geometry=new THREE.BufferGeometry,this.geometry},update:function(e){}},module.exports.registerGeometry=function(e,r){var t,o={};if(Object.keys(r).forEach(function(e){o[e]={value:r[e],writable:!0}}),geometries[e])throw new Error("The geometry `"+e+"` has been already registered");return t=function(){Geometry.call(this)},t.prototype=Object.create(Geometry.prototype,o),t.prototype.name=e,t.prototype.constructor=t,geometries[e]={Geometry:t,schema:processSchema(t.prototype.schema)},geometryNames.push(e),t};
},{"../lib/three":183,"./schema":144}],137:[function(require,module,exports){
function registerPropertyType(e,r,t,n){if("type"in propertyTypes)return void error("Property type "+e+" is already registered.");propertyTypes[e]={default:r,parse:t||defaultParse,stringify:n||defaultStringify}}function arrayParse(e){function r(e){return e.trim()}return Array.isArray(e)?e:e&&"string"==typeof e?e.split(",").map(r):[]}function arrayStringify(e){return e.join(", ")}function assetParse(e){var r,t;return"string"!=typeof e?e:(t=e.match(urlRegex),t?t[1]:"#"===e.charAt(0)?(r=document.getElementById(e.substring(1)))?"CANVAS"===r.tagName||"VIDEO"===r.tagName||"IMG"===r.tagName?r:r.getAttribute("src"):void warn('"'+e+'" asset not found.'):e)}function defaultParse(e){return e}function defaultStringify(e){return null===e?"null":e.toString()}function boolParse(e){return"false"!==e&&!1!==e}function intParse(e){return parseInt(e,10)}function numberParse(e){return parseFloat(e,10)}function selectorParse(e){return e?"string"!=typeof e?e:"#"!==e[0]||nonCharRegex.test(e)?document.querySelector(e):document.getElementById(e.substring(1)):null}function selectorAllParse(e){return e?"string"!=typeof e?e:Array.prototype.slice.call(document.querySelectorAll(e),0):null}function selectorStringify(e){return e.getAttribute?"#"+e.getAttribute("id"):defaultStringify(e)}function selectorAllStringify(e){return e instanceof Array?e.map(function(e){return"#"+e.getAttribute("id")}).join(", "):defaultStringify(e)}function srcParse(e){return warn("`src` property type is deprecated. Use `asset` instead."),assetParse(e)}function vecParse(e){return coordinates.parse(e,this.default)}function isValidDefaultValue(e,r){return("audio"!==e||"string"==typeof r)&&(!("array"===e&&!Array.isArray(r))&&(("asset"!==e||"string"==typeof r)&&(("boolean"!==e||"boolean"==typeof r)&&(("color"!==e||"string"==typeof r)&&(("int"!==e||"number"==typeof r)&&(("number"!==e||"number"==typeof r)&&(("map"!==e||"string"==typeof r)&&(("model"!==e||"string"==typeof r)&&(("selector"!==e||"string"==typeof r||null===r)&&(("selectorAll"!==e||"string"==typeof r||null===r)&&(("src"!==e||"string"==typeof r)&&(("string"!==e||"string"==typeof r)&&(("time"!==e||"number"==typeof r)&&("vec2"===e?isValidDefaultCoordinate(r,2):"vec3"===e?isValidDefaultCoordinate(r,3):"vec4"!==e||isValidDefaultCoordinate(r,4)))))))))))))))}function isValidDefaultCoordinate(e,r){if(null===e)return!0;if("object"!=typeof e)return!1;if(Object.keys(e).length!==r)return!1;var t=e.x,n=e.y,i=e.z,o=e.w;return"number"==typeof t&&"number"==typeof n&&(!(r>2&&"number"!=typeof i)&&!(r>3&&"number"!=typeof o))}var coordinates=require("../utils/coordinates"),debug=require("debug"),error=debug("core:propertyTypes:warn"),warn=debug("core:propertyTypes:warn"),propertyTypes=module.exports.propertyTypes={},nonCharRegex=/[,> .[\]:]/,urlRegex=/\url\((.+)\)/;registerPropertyType("audio","",assetParse),registerPropertyType("array",[],arrayParse,arrayStringify),registerPropertyType("asset","",assetParse),registerPropertyType("boolean",!1,boolParse),registerPropertyType("color","#FFF",defaultParse,defaultStringify),registerPropertyType("int",0,intParse),registerPropertyType("number",0,numberParse),registerPropertyType("map","",assetParse),registerPropertyType("model","",assetParse),registerPropertyType("selector",null,selectorParse,selectorStringify),registerPropertyType("selectorAll",null,selectorAllParse,selectorAllStringify),registerPropertyType("src","",srcParse),registerPropertyType("string","",defaultParse,defaultStringify),registerPropertyType("time",0,intParse),registerPropertyType("vec2",{x:0,y:0},vecParse,coordinates.stringify),registerPropertyType("vec3",{x:0,y:0,z:0},vecParse,coordinates.stringify),registerPropertyType("vec4",{x:0,y:0,z:0,w:1},vecParse,coordinates.stringify),module.exports.registerPropertyType=registerPropertyType,module.exports.isValidDefaultValue=isValidDefaultValue,module.exports.isValidDefaultCoordinate=isValidDefaultCoordinate;
},{"../utils/coordinates":205,"debug":8}],138:[function(require,module,exports){
function getCanvasSize(e,t,i,s){return e.parentElement?t?{height:e.parentElement.offsetHeight,width:e.parentElement.offsetWidth}:getMaxSize(i,s):{height:0,width:0}}function getMaxSize(e,t){var i,s,n=window.devicePixelRatio;return s={height:document.body.offsetHeight,width:document.body.offsetWidth},!e||t||-1===e.width&&-1===e.height?s:s.width*n<e.width&&s.height*n<e.height?s:(i=s.width/s.height,s.width*n>e.width&&-1!==e.width&&(s.width=Math.round(e.width/n),s.height=Math.round(e.width/i/n)),s.height*n>e.height&&-1!==e.height&&(s.height=Math.round(e.height/n),s.width=Math.round(e.height*i/n)),s)}function requestFullscreen(e){(e.requestFullscreen||e.webkitRequestFullscreen||e.mozRequestFullScreen||e.msRequestFullscreen).apply(e,[{navigationUI:"hide"}])}function exitFullscreen(){(document.fullscreenElement||document.webkitFullscreenElement||document.mozFullScreenElement)&&(document.exitFullscreen?document.exitFullscreen():document.mozCancelFullScreen?document.mozCancelFullScreen():document.webkitExitFullscreen&&document.webkitExitFullscreen())}function setupCanvas(e){function t(){document.fullscreenElement||document.mozFullScreenElement||document.webkitFullscreenElement||e.exitVR(),document.activeElement.blur(),document.body.focus()}var i;i=document.createElement("canvas"),i.classList.add("a-canvas"),i.dataset.aframeCanvas=!0,e.appendChild(i),document.addEventListener("fullscreenchange",t),document.addEventListener("mozfullscreenchange",t),document.addEventListener("webkitfullscreenchange",t),document.addEventListener("MSFullscreenChange",t),i.addEventListener("touchmove",function(e){e.preventDefault()}),e.canvas=i,e.emit("render-target-loaded",{target:i}),setTimeout(bind(e.resize,e),0)}var initMetaTags=require("./metaTags").inject,initWakelock=require("./wakelock"),loadingScreen=require("./loadingScreen"),re=require("../a-register-element"),scenes=require("./scenes"),systems=require("../system").systems,THREE=require("../../lib/three"),utils=require("../../utils/"),AEntity=require("../a-entity"),ANode=require("../a-node"),initPostMessageAPI=require("./postMessage"),bind=utils.bind,isIOS=utils.device.isIOS(),isMobile=utils.device.isMobile(),isWebXRAvailable=utils.device.isWebXRAvailable,registerElement=re.registerElement,warn=utils.debug("core:a-scene:warn");isIOS&&require("../../utils/ios-orientationchange-blank-bug"),module.exports.AScene=registerElement("a-scene",{prototype:Object.create(AEntity.prototype,{createdCallback:{value:function(){this.clock=new THREE.Clock,this.isIOS=isIOS,this.isMobile=isMobile,this.hasWebXR=isWebXRAvailable,this.isAR=!1,this.isScene=!0,this.object3D=new THREE.Scene;var e=this;this.object3D.onAfterRender=function(t,i,s){e.isPlaying&&e.tock(e.time,e.delta,s)},this.resize=bind(this.resize,this),this.render=bind(this.render,this),this.systems={},this.systemNames=[],this.time=this.delta=0,this.behaviors={tick:[],tock:[]},this.hasLoaded=!1,this.isPlaying=!1,this.originalHTML=this.innerHTML,this.setAttribute("inspector",""),this.setAttribute("keyboard-shortcuts",""),this.setAttribute("screenshot",""),this.setAttribute("vr-mode-ui",""),this.setAttribute("device-orientation-permission-ui","")}},addFullScreenStyles:{value:function(){document.documentElement.classList.add("a-fullscreen")}},removeFullScreenStyles:{value:function(){document.documentElement.classList.remove("a-fullscreen")}},attachedCallback:{value:function(){var e=this,t=this.hasAttribute("embedded");setupCanvas(this),this.setupRenderer(),loadingScreen.setup(this,getCanvasSize),this.resize(),t||this.addFullScreenStyles(),initPostMessageAPI(this),initMetaTags(this),initWakelock(this),this.onVRPresentChangeBound=bind(this.onVRPresentChange,this),window.addEventListener("vrdisplaypresentchange",this.onVRPresentChangeBound),this.enterVRBound=function(){e.enterVR()},this.exitVRBound=function(){e.exitVR()},this.exitVRTrueBound=function(){e.exitVR(!0)},this.pointerRestrictedBound=function(){e.pointerRestricted()},this.pointerUnrestrictedBound=function(){e.pointerUnrestricted()},isWebXRAvailable||(window.addEventListener("vrdisplaydeactivate",this.exitVRBound),window.addEventListener("vrdisplaydisconnect",this.exitVRTrueBound),window.addEventListener("vrdisplaypointerrestricted",this.pointerRestrictedBound),window.addEventListener("vrdisplaypointerunrestricted",this.pointerUnrestrictedBound)),window.addEventListener("sessionend",this.resize),this.addEventListener("cameraready",function(){e.attachedCallbackPostCamera()}),this.initSystems(),this.hasWebXR&&navigator.xr&&navigator.xr.addEventListener&&navigator.xr.addEventListener("sessiongranted",function(){e.enterVR()})}},attachedCallbackPostCamera:{value:function(){var e=this;window.addEventListener("load",void 0),window.addEventListener("resize",function(){e.isIOS?setTimeout(e.resize,100):e.resize()}),this.play(),scenes.push(this)},writable:window.debug},initSystems:{value:function(){var e;this.initSystem("camera");for(e in systems)"camera"!==e&&this.initSystem(e)}},initSystem:{value:function(e){this.systems[e]||(this.systems[e]=new systems[e](this),this.systemNames.push(e))}},detachedCallback:{value:function(){var e=scenes.indexOf(this);scenes.splice(e,1),window.removeEventListener("vrdisplaypresentchange",this.onVRPresentChangeBound),window.removeEventListener("vrdisplayactivate",this.enterVRBound),window.removeEventListener("vrdisplaydeactivate",this.exitVRBound),window.removeEventListener("vrdisplayconnect",this.enterVRBound),window.removeEventListener("vrdisplaydisconnect",this.exitVRTrueBound),window.removeEventListener("vrdisplaypointerrestricted",this.pointerRestrictedBound),window.removeEventListener("vrdisplaypointerunrestricted",this.pointerUnrestrictedBound),window.removeEventListener("sessionend",this.resize),this.renderer.xr.dispose()}},addBehavior:{value:function(e){var t,i,s=this.behaviors;for(i in s)e[i]&&(t=this.behaviors[i],-1===t.indexOf(e)&&t.push(e))}},getPointerLockElement:{value:function(){return document.pointerLockElement},writable:window.debug},checkHeadsetConnected:{value:utils.device.checkHeadsetConnected,writable:window.debug},enterAR:{value:function(){var e;if(!this.hasWebXR)throw e="Failed to enter AR mode, WebXR not supported.",new Error(e);if(!utils.device.checkARSupport())throw e="Failed to enter AR, WebXR immersive-ar mode not supported in your browser or device.",new Error(e);return this.enterVR(!0)}},enterVR:{value:function(e){function t(t){var i;window.hasNativeWebVRImplementation&&!window.hasNativeWebXRImplementation&&(i=new CustomEvent("vrdisplaypresentchange",{detail:{display:utils.device.getVRDisplay()}}),window.dispatchEvent(i)),e?r.addState("ar-mode"):r.addState("vr-mode"),r.emit("enter-vr",{target:r}),!isWebXRAvailable&&r.isMobile&&screen.orientation&&screen.orientation.lock&&screen.orientation.lock("landscape"),r.addFullScreenStyles(),r.isMobile||r.checkHeadsetConnected()||requestFullscreen(r.canvas),r.resize(),t&&t()}function i(e){throw r.removeState("vr-mode"),e&&e.message?new Error("Failed to enter VR mode (`requestPresent`): "+e.message):new Error("Failed to enter VR mode (`requestPresent`).")}var s,n,r=this,a=r.renderer.xr;if(this.is("vr-mode"))return Promise.resolve("Already in VR.");if(this.checkHeadsetConnected()||this.isMobile){if(a.enabled=!0,this.hasWebXR){this.xrSession&&this.xrSession.removeEventListener("end",this.exitVRBound);var o=this.sceneEl.systems.webxr.sessionReferenceSpaceType;a.setReferenceSpaceType(o);var d=e?"immersive-ar":"immersive-vr";return n=this.sceneEl.systems.webxr.sessionConfiguration,new Promise(function(e,i){navigator.xr.requestSession(d,n).then(function(i){r.xrSession=i,a.layersEnabled=-1!==n.requiredFeatures.indexOf("layers"),a.setSession(i),i.addEventListener("end",r.exitVRBound),t(e)},function(e){var t="immersive-ar"===d,i=t?"AR":"VR";throw new Error("Failed to enter "+i+" mode (`requestSession`) "+e)})})}if(s=utils.device.getVRDisplay(),a.setDevice(s),s.isPresenting&&!window.hasNativeWebVRImplementation)return t(),Promise.resolve();var h=this.getAttribute("renderer"),c={highRefreshRate:h.highRefreshRate,foveationLevel:h.foveationLevel};return s.requestPresent([{source:this.canvas,attributes:c}]).then(t,i)}return t(),Promise.resolve()},writable:!0},exitVR:{value:function(){function e(){s.removeState("vr-mode"),s.removeState("ar-mode"),s.isMobile&&screen.orientation&&screen.orientation.unlock&&screen.orientation.unlock(),s.hasAttribute("embedded")&&s.removeFullScreenStyles(),s.resize(),s.isIOS&&utils.forceCanvasResizeSafariMobile(s.canvas),s.renderer.setPixelRatio(window.devicePixelRatio),s.emit("exit-vr",{target:s})}function t(e){throw e&&e.message?new Error("Failed to exit VR mode (`exitPresent`): "+e.message):new Error("Failed to exit VR mode (`exitPresent`).")}var i,s=this,n=this.renderer.xr;if(!this.is("vr-mode")&&!this.is("ar-mode"))return Promise.resolve("Not in immersive mode.");if(this.checkHeadsetConnected()||this.isMobile){if(n.enabled=!1,i=utils.device.getVRDisplay(),this.hasWebXR)this.xrSession.removeEventListener("end",this.exitVRBound),this.xrSession.end().then(function(){},function(){}),this.xrSession=void 0,n.setSession(null);else if(i.isPresenting)return i.exitPresent().then(e,t)}else exitFullscreen();return e(),Promise.resolve()},writable:!0},pointerRestricted:{value:function(){if(this.canvas){var e=this.getPointerLockElement();e&&e!==this.canvas&&document.exitPointerLock&&document.exitPointerLock(),this.canvas.requestPointerLock&&this.canvas.requestPointerLock()}}},pointerUnrestricted:{value:function(){var e=this.getPointerLockElement();e&&e===this.canvas&&document.exitPointerLock&&document.exitPointerLock()}},onVRPresentChange:{value:function(e){var t=e.display||e.detail.display;if(t&&t.isPresenting)return void this.enterVR();this.exitVR()}},getAttribute:{value:function(e){var t=this.systems[e];return t?t.data:AEntity.prototype.getAttribute.call(this,e)}},getComputedAttribute:{value:function(e){warn("`getComputedAttribute` is deprecated. Use `getAttribute` instead."),this.getAttribute(e)}},getDOMAttribute:{value:function(e){var t=this.systems[e];return t?t.data:AEntity.prototype.getDOMAttribute.call(this,e)}},setAttribute:{value:function(e,t,i){var s=this.systems[e];if(s)return ANode.prototype.setAttribute.call(this,e,t),void s.updateProperties(t);AEntity.prototype.setAttribute.call(this,e,t,i)}},removeBehavior:{value:function(e){var t,i,s,n=this.behaviors;for(i in n)e[i]&&(t=this.behaviors[i],-1!==(s=t.indexOf(e))&&t.splice(s,1))}},resize:{value:function(){var e,t,i,s=this.camera,n=this.canvas,r=this.renderer.xr.isPresenting;t=this.renderer.xr.enabled&&r,!s||!n||this.is("vr-mode")&&(this.isMobile||t)||(e=this.getAttribute("embedded")&&!this.is("vr-mode"),i=getCanvasSize(n,e,this.maxCanvasSize,this.is("vr-mode")),s.aspect=i.width/i.height,s.updateProjectionMatrix(),this.renderer.setSize(i.width,i.height,!1),this.emit("rendererresize",null,!1))},writable:!0},setupRenderer:{value:function(){var e,t,i,s,n=this;s={alpha:!0,antialias:!isMobile,canvas:this.canvas,logarithmicDepthBuffer:!1,powerPreference:"high-performance"},this.maxCanvasSize={height:1920,width:1920},this.hasAttribute("renderer")&&(i=this.getAttribute("renderer"),t=utils.styleParser.parse(i),t.precision&&(s.precision=t.precision+"p"),t.antialias&&"auto"!==t.antialias&&(s.antialias="true"===t.antialias),t.logarithmicDepthBuffer&&"auto"!==t.logarithmicDepthBuffer&&(s.logarithmicDepthBuffer="true"===t.logarithmicDepthBuffer),t.alpha&&(s.alpha="true"===t.alpha),this.maxCanvasSize={width:t.maxCanvasWidth?parseInt(t.maxCanvasWidth):this.maxCanvasSize.width,height:t.maxCanvasHeight?parseInt(t.maxCanvasHeight):this.maxCanvasSize.height}),e=this.renderer=new THREE.WebGLRenderer(s),e.setPixelRatio(window.devicePixelRatio),e.sortObjects=!1,this.camera&&e.xr.setPoseTarget(this.camera.el.object3D),this.addEventListener("camera-set-active",function(){e.xr.setPoseTarget(n.camera.el.object3D)})},writable:window.debug},play:{value:function(){var e=this,t=this;if(this.renderStarted)return void AEntity.prototype.play.call(this);this.addEventListener("loaded",function(){var e,i=this.renderer,s=this.renderer.xr;AEntity.prototype.play.call(this),t.renderStarted||(t.resize(),t.renderer&&(window.performance&&window.performance.mark("render-started"),loadingScreen.remove(),e=utils.device.getVRDisplay(),e&&e.isPresenting&&(s.setDevice(e),s.enabled=!0,t.enterVR()),i.setAnimationLoop(this.render),t.renderStarted=!0,t.emit("renderstart")))}),setTimeout(function(){AEntity.prototype.load.call(e)})}},updateComponent:{value:function(e){e in systems||AEntity.prototype.updateComponent.apply(this,arguments)}},tick:{value:function(e,t){var i,s=this.systems;for(i=0;i<this.behaviors.tick.length;i++)this.behaviors.tick[i].el.isPlaying&&this.behaviors.tick[i].tick(e,t);for(i=0;i<this.systemNames.length;i++)s[this.systemNames[i]].tick&&s[this.systemNames[i]].tick(e,t)}},tock:{value:function(e,t,i){var s,n=this.systems;for(s=0;s<this.behaviors.tock.length;s++)this.behaviors.tock[s].el.isPlaying&&this.behaviors.tock[s].tock(e,t,i);for(s=0;s<this.systemNames.length;s++)n[this.systemNames[s]].tock&&n[this.systemNames[s]].tock(e,t,i)}},render:{value:function(e,t){var i=this.renderer;this.frame=t,this.delta=1e3*this.clock.getDelta(),this.time=1e3*this.clock.elapsedTime,this.isPlaying&&this.tick(this.time,this.delta);var s=null;this.is("ar-mode")&&(s=this.object3D.background,this.object3D.background=null),i.render(this.object3D,this.camera),s&&(this.object3D.background=s)},writable:!0}})}),module.exports.setupCanvas=setupCanvas;
},{"../../lib/three":183,"../../utils/":210,"../../utils/ios-orientationchange-blank-bug":211,"../a-entity":131,"../a-node":133,"../a-register-element":134,"../system":146,"./loadingScreen":139,"./metaTags":140,"./postMessage":141,"./scenes":142,"./wakelock":143}],139:[function(require,module,exports){
function resize(e){var t=sceneEl.hasAttribute("embedded"),i=getSceneCanvasSize(sceneEl.canvas,t,sceneEl.maxCanvasSize,sceneEl.is("vr-mode"));e.aspect=i.width/i.height,e.updateProjectionMatrix(),sceneEl.renderer.setSize(i.width,i.height,!1)}function setupTitle(){titleEl=document.createElement("div"),titleEl.className=LOADER_TITLE_CLASS,titleEl.innerHTML=document.title,titleEl.style.display="none",sceneEl.appendChild(titleEl)}var utils=require("../../utils/"),styleParser=utils.styleParser,sceneEl,titleEl,getSceneCanvasSize,ATTR_NAME="loading-screen",LOADER_TITLE_CLASS="a-loader-title";module.exports.setup=function(e,t){sceneEl=e,getSceneCanvasSize=t;var i,n,s,l,r,o,a,d,E,c,u=sceneEl.hasAttribute(ATTR_NAME)?styleParser.parse(sceneEl.getAttribute(ATTR_NAME)):void 0,T=u&&u.dotsColor||"white",v=u&&u.backgroundColor||"#24CAFF",p=void 0===u||"true"===u.enabled||void 0===u.enabled;p&&(i=new THREE.Scene,n=new THREE.SphereGeometry(.2,36,18,0,2*Math.PI,0,Math.PI),s=new THREE.MeshBasicMaterial({color:T}),l=new THREE.Mesh(n,s),r=l.clone(),o=l.clone(),a=new THREE.PerspectiveCamera(80,window.innerWidth/window.innerHeight,5e-4,1e4),d=new THREE.Clock,E=0,c=function(){sceneEl.renderer.render(i,a),E=d.getElapsedTime()%4,l.visible=E>=1,r.visible=E>=2,o.visible=E>=3},i.background=new THREE.Color(v),i.add(a),l.position.set(-1,0,-15),r.position.set(0,0,-15),o.position.set(1,0,-15),a.add(l),a.add(r),a.add(o),setupTitle(),setTimeout(function(){sceneEl.hasLoaded||(resize(a),titleEl.style.display="block",window.addEventListener("resize",function(){resize(a)}),sceneEl.renderer.setAnimationLoop(c))},200))},module.exports.remove=function(){window.removeEventListener("resize",resize),titleEl&&(titleEl.style.display="none")};
},{"../../utils/":210}],140:[function(require,module,exports){
function Meta(e){return{tagName:"meta",attributes:e,exists:function(){return document.querySelector('meta[name="'+e.name+'"]')}}}function Link(e){return{tagName:"link",attributes:e,exists:function(){return document.querySelector('link[rel="'+e.rel+'"]')}}}function createTag(e){if(e&&e.tagName){var t=document.createElement(e.tagName);return t.setAttribute(constants.AFRAME_INJECTED,""),extend(t,e.attributes)}}var constants=require("../../constants/"),extend=require("../../utils").extend,MOBILE_HEAD_TAGS=module.exports.MOBILE_HEAD_TAGS=[Meta({name:"viewport",content:"width=device-width,initial-scale=1,maximum-scale=1,shrink-to-fit=no,user-scalable=no,minimal-ui,viewport-fit=cover"}),Meta({name:"mobile-web-app-capable",content:"yes"}),Meta({name:"theme-color",content:"black"})],MOBILE_IOS_HEAD_TAGS=[Meta({name:"apple-mobile-web-app-capable",content:"yes"}),Meta({name:"apple-mobile-web-app-status-bar-style",content:"black"}),Link({rel:"apple-touch-icon",href:"https://aframe.io/images/aframe-logo-152.png"})];module.exports.inject=function(e){function t(e){e&&!e.exists()&&(a=createTag(e))&&(r?r.parentNode.insertBefore(a,r):n.appendChild(a),i.push(a))}var a,n=document.head,r=n.querySelector("script"),i=[];return MOBILE_HEAD_TAGS.forEach(t),e.isIOS&&MOBILE_IOS_HEAD_TAGS.forEach(t),i};
},{"../../constants/":127,"../../utils":210}],141:[function(require,module,exports){
function postMessageAPIHandler(e){var a=this;if(e.data)switch(e.data.type){case"vr":switch(e.data.data){case"enter":a.enterVR();break;case"exit":a.exitVR()}}}var bind=require("../../utils/bind"),isIframed=require("../../utils/").isIframed;module.exports=function(e){isIframed()&&window.addEventListener("message",bind(postMessageAPIHandler,e))};
},{"../../utils/":210,"../../utils/bind":204}],142:[function(require,module,exports){
module.exports=[];
},{}],143:[function(require,module,exports){
var Wakelock=require("../../../vendor/wakelock/wakelock");module.exports=function(e){if(e.isMobile){var n=e.wakelock=new Wakelock;e.addEventListener("enter-vr",function(){n.request()}),e.addEventListener("exit-vr",function(){n.release()})}};
},{"../../../vendor/wakelock/wakelock":225}],144:[function(require,module,exports){
function isSingleProperty(r){return"type"in r?"string"==typeof r.type:"default"in r}function processPropertyDefinition(r,e){var t,o,n=r.default,p=r.type;return r.type?"bool"===r.type?p="boolean":"float"===r.type&&(p="number"):p=void 0===n||"boolean"!=typeof n&&"number"!=typeof n?Array.isArray(n)?"array":"string":typeof n,o=propertyTypes[p],o||warn("Unknown property type for component `"+e+"`: "+p),t=!!r.parse,r.parse=r.parse||o.parse,r.stringify=r.stringify||o.stringify,r.type=p,"default"in r?t||isValidDefaultValue(p,n)||warn("Default value `"+n+"` does not match type `"+p+"` in component `"+e+"`"):r.default=o.default,r}function parseProperty(r,e){return void 0!==r&&null!==r&&""!==r||(r=e.default,Array.isArray(r)&&(r=r.slice())),e.parse(r,e.default)}function stringifyProperty(r,e){return"object"!=typeof r?r:e&&null!==r?e.stringify(r):JSON.stringify(r)}var utils=require("../utils/"),PropertyTypes=require("./propertyTypes"),debug=utils.debug,isValidDefaultValue=PropertyTypes.isValidDefaultValue,propertyTypes=PropertyTypes.propertyTypes,warn=debug("core:schema:warn");module.exports.isSingleProperty=isSingleProperty,module.exports.process=function(r,e){var t;if(isSingleProperty(r))return processPropertyDefinition(r,e);for(t in r)r[t]=processPropertyDefinition(r[t],e);return r},module.exports.processPropertyDefinition=processPropertyDefinition,module.exports.parseProperties=function(){var r=[];return function(e,t,o,n,p){var i,s,y,u;r.length=0;for(s in o?e:t)o&&void 0===e[s]||r.push(s);if(null===e||"object"!=typeof e)return e;for(s in e)void 0===e[s]||t[s]||p||warn("Unknown property `"+s+"` for component/system `"+n+"`.");for(i=0;i<r.length;i++){if(s=r[i],y=t[s],u=e[s],!t[s])return;e[s]=parseProperty(u,y)}return e}}(),module.exports.parseProperty=parseProperty,module.exports.stringifyProperties=function(r,e){var t,o,n,p,i={};for(t in r)o=e[t],n=r[t],p=n,"object"==typeof p&&(p=stringifyProperty(n,o),o||warn("Unknown component property: "+t)),i[t]=p;return i},module.exports.stringifyProperty=stringifyProperty;
},{"../utils/":210,"./propertyTypes":137}],145:[function(require,module,exports){
var schema=require("./schema"),processSchema=schema.process,shaders=module.exports.shaders={},shaderNames=module.exports.shaderNames=[],THREE=require("../lib/three"),utils=require("../utils"),propertyToThreeMapping={array:"v3",color:"v3",int:"i",number:"f",map:"t",time:"f",vec2:"v2",vec3:"v3",vec4:"v4"},Shader=module.exports.Shader=function(){};Shader.prototype={schema:{},vertexShader:"void main() {gl_Position = projectionMatrix * modelViewMatrix * vec4(position, 1.0);}",fragmentShader:"void main() {gl_FragColor = vec4(1.0, 0.0, 1.0, 1.0);}",init:function(e){return this.attributes=this.initVariables(e,"attribute"),this.uniforms=this.initVariables(e,"uniform"),this.material=new(this.raw?THREE.RawShaderMaterial:THREE.ShaderMaterial)({uniforms:this.uniforms,vertexShader:this.vertexShader,fragmentShader:this.fragmentShader}),this.material},initVariables:function(e,r){var t,a,i=this.schema,s={};for(t in i)i[t].is===r&&(a=propertyToThreeMapping[i[t].type],s[t]={type:a,value:void 0});return s},update:function(e){this.updateVariables(e,"attribute"),this.updateVariables(e,"uniform")},updateVariables:function(e,r){var t,a,i,s=this.schema;i="uniform"===r?this.uniforms:this.attributes;for(t in e)if(s[t]&&s[t].is===r)if("map"!==s[t].type)i[t].value=this.parseValue(s[t].type,e[t]),i[t].needsUpdate=!0;else{if(!i[t]||i[t].value===e[t])continue;a="_texture_"+t,this.setMapOnTextureLoad(i,t,a),utils.material.updateMapMaterialFromData(a,t,this,e)}},parseValue:function(e,r){var t;switch(e){case"vec2":return new THREE.Vector2(r.x,r.y);case"vec3":return new THREE.Vector3(r.x,r.y,r.z);case"vec4":return new THREE.Vector4(r.x,r.y,r.z,r.w);case"color":return t=new THREE.Color(r),new THREE.Vector3(t.r,t.g,t.b);case"map":return THREE.ImageUtils.loadTexture(r);default:return r}},setMapOnTextureLoad:function(e,r,t){var a=this;this.el.addEventListener("materialtextureloaded",function(){e[r].value=a.material[t],e[r].needsUpdate=!0})}},module.exports.registerShader=function(e,r){var t,a={};if(Object.keys(r).forEach(function(e){a[e]={value:r[e],writable:!0}}),shaders[e])throw new Error("The shader "+e+" has been already registered");return t=function(){Shader.call(this)},t.prototype=Object.create(Shader.prototype,a),t.prototype.name=e,t.prototype.constructor=t,shaders[e]={Shader:t,schema:processSchema(t.prototype.schema)},shaderNames.push(e),t};
},{"../lib/three":183,"../utils":210,"./schema":144}],146:[function(require,module,exports){
var components=require("./component"),schema=require("./schema"),utils=require("../utils/"),parseProperties=schema.parseProperties,parseProperty=schema.parseProperty,processSchema=schema.process,isSingleProp=schema.isSingleProperty,styleParser=utils.styleParser,systems=module.exports.systems={},System=module.exports.System=function(e){var t=components&&components.components[this.name];this.el=e,this.sceneEl=e,t&&(t.Component.prototype.system=this),this.buildData(),this.init(),this.update({})};System.prototype={schema:{},init:function(){},update:function(e){},updateProperties:function(e){var t=this.data;Object.keys(schema).length&&(this.buildData(e),this.update(t))},buildData:function(e){var t=this.schema;Object.keys(t).length&&(e=e||window.HTMLElement.prototype.getAttribute.call(this.sceneEl,this.name),isSingleProp(t)?this.data=parseProperty(e,t):this.data=parseProperties(styleParser.parse(e)||{},t))},tick:void 0,tock:void 0,play:function(){},pause:function(){}},module.exports.registerSystem=function(e,t){var s,o,r={},i=utils.findAllScenes(document);if(Object.keys(t).forEach(function(e){r[e]={value:t[e],writable:!0}}),systems[e])throw new Error("The system `"+e+"` has been already registered. Check that you are not loading two versions of the same system or two different systems of the same name.");for(o=function(e){System.call(this,e)},o.prototype=Object.create(System.prototype,r),o.prototype.name=e,o.prototype.constructor=o,o.prototype.schema=utils.extend(processSchema(o.prototype.schema)),systems[e]=o,s=0;s<i.length;s++)i[s].initSystem(e)};
},{"../utils/":210,"./component":135,"./schema":144}],147:[function(require,module,exports){
require("./pivot");
},{"./pivot":148}],148:[function(require,module,exports){
var registerComponent=require("../../core/component").registerComponent,THREE=require("../../lib/three"),originalPosition=new THREE.Vector3,originalRotation=new THREE.Vector3;registerComponent("pivot",{dependencies:["position"],schema:{type:"vec3"},init:function(){var o=this.data,i=this.el,t=i.object3D.parent,e=i.object3D,n=new THREE.Group;originalPosition.copy(e.position),originalRotation.copy(e.rotation),t.remove(e),n.add(e),t.add(n),i.object3D=n,e.position.set(-1*o.x,-1*o.y,-1*o.z),n.position.set(o.x+originalPosition.x,o.y+originalPosition.y,o.z+originalPosition.z),n.rotation.copy(e.rotation),e.rotation.set(0,0,0)}});
},{"../../core/component":135,"../../lib/three":183}],149:[function(require,module,exports){
function addMapping(e){var a=e.replace(/([a-z])([A-Z])/g,"$1-$2").toLowerCase();"fog"===e&&(a="material-fog"),"visible"===e&&(a="material-visible"),materialMappings[a]="material."+e}var components=require("../../core/component").components,shaders=require("../../core/shader").shaders,utils=require("../../utils/"),materialMappings={};Object.keys(components.material.schema).forEach(addMapping),Object.keys(shaders.standard.schema).forEach(addMapping),module.exports=function(){return{defaultComponents:{material:{}},mappings:utils.extend({},materialMappings)}};
},{"../../core/component":135,"../../core/shader":145,"../../utils/":210}],150:[function(require,module,exports){
require("./primitives/a-camera"),require("./primitives/a-cursor"),require("./primitives/a-curvedimage"),require("./primitives/a-gltf-model"),require("./primitives/a-image"),require("./primitives/a-light"),require("./primitives/a-link"),require("./primitives/a-obj-model"),require("./primitives/a-sky"),require("./primitives/a-sound"),require("./primitives/a-text"),require("./primitives/a-video"),require("./primitives/a-videosphere"),require("./primitives/meshPrimitives");
},{"./primitives/a-camera":152,"./primitives/a-cursor":153,"./primitives/a-curvedimage":154,"./primitives/a-gltf-model":155,"./primitives/a-image":156,"./primitives/a-light":157,"./primitives/a-link":158,"./primitives/a-obj-model":159,"./primitives/a-sky":160,"./primitives/a-sound":161,"./primitives/a-text":162,"./primitives/a-video":163,"./primitives/a-videosphere":164,"./primitives/meshPrimitives":165}],151:[function(require,module,exports){
function addComponentMapping(e,t){var i=components[e].schema;Object.keys(i).map(function(i){var n=i.replace(/([a-z])([A-Z])/g,"$1-$2").toLowerCase();void 0!==t[n]&&(n=e+"-"+i),t[n]=e+"."+i})}function definePrimitive(e,t,i){i=i||{},Object.keys(t).map(function(e){addComponentMapping(e,i)}),module.exports.registerPrimitive(e,utils.extendDeep({},null,{defaultComponents:t,mappings:i}))}var AEntity=require("../../core/a-entity"),components=require("../../core/component").components,registerElement=require("../../core/a-register-element").registerElement,utils=require("../../utils/"),debug=utils.debug,setComponentProperty=utils.entity.setComponentProperty,log=debug("extras:primitives:debug"),warn=debug("extras:primitives:warn"),primitives=module.exports.primitives={};module.exports.registerPrimitive=function(e,t){e=e.toLowerCase(),log("Registering <%s>",e),t.defaultAttributes&&warn("The 'defaultAttributes' object is deprecated. Use 'defaultComponents' instead.");var i=registerElement(e,{prototype:Object.create(AEntity.prototype,{defaultComponentsFromPrimitive:{value:t.defaultComponents||t.defaultAttributes||{}},deprecated:{value:t.deprecated||null},deprecatedMappings:{value:t.deprecatedMappings||{}},mappings:{value:t.mappings||{}},createdCallback:{value:function(){t.deprecated&&console.warn(t.deprecated),this.resolveMappingCollisions()}},resolveMappingCollisions:{value:function(){var e=this.mappings,t=this;Object.keys(e).forEach(function(i){var n;i!==i.toLowerCase()&&warn("Mapping keys should be specified in lower case. The mapping key "+i+" may not be recognized"),components[i]&&(n=e[i].replace(".","-"),e[n]=e[i],delete e[i],console.warn("The primitive "+t.tagName.toLowerCase()+" has a mapping collision. The attribute "+i+" has the same name as a registered component and has been renamed to "+n))})}},getExtraComponents:{value:function(){function e(e,r){return t(e)?i(r):t(r)?i(e):n(e)&&n(r)?utils.extendDeep(e,r):i(r)}function t(e){return void 0===e}function i(e){return n(e)?utils.extendDeep({},e):e}function n(e){return null!==e&&e.constructor===Object}var r,o,a,s,p,u,l=this;for(o=utils.clone(this.defaultComponentsFromPrimitive),p=this.getAttribute("mixin"),p&&(p=p.trim().split(" "),p.forEach(function(t){var i=l.sceneEl.querySelector("#"+t).componentCache;Object.keys(i).forEach(function(t){o[t]=e(o[t],i[t])})})),a=0;a<this.attributes.length;a++)r=this.attributes[a],(s=this.mappings[r.name])&&(u=utils.entity.getComponentPropertyPath(s),u.constructor===Array?(o[u[0]]=o[u[0]]||{},o[u[0]][u[1]]=r.value.trim()):o[u]=r.value.trim());return o}},attributeChangedCallback:{value:function(e,t,i){var n=this.mappings[e];e in this.deprecatedMappings&&console.warn(this.deprecatedMappings[e]),e&&n&&setComponentProperty(this,n,i)}}})});return primitives[e]=i,i},module.exports.definePrimitive=definePrimitive;
},{"../../core/a-entity":131,"../../core/a-register-element":134,"../../core/component":135,"../../utils/":210}],152:[function(require,module,exports){
var registerPrimitive=require("../primitives").registerPrimitive;registerPrimitive("a-camera",{defaultComponents:{camera:{},"look-controls":{},"wasd-controls":{},position:{x:0,y:1.6,z:0}},mappings:{active:"camera.active",far:"camera.far",fov:"camera.fov","look-controls-enabled":"look-controls.enabled",near:"camera.near","pointer-lock-enabled":"look-controls.pointerLockEnabled","wasd-controls-enabled":"wasd-controls.enabled","reverse-mouse-drag":"look-controls.reverseMouseDrag",zoom:"camera.zoom"}});
},{"../primitives":151}],153:[function(require,module,exports){
var getMeshMixin=require("../getMeshMixin"),registerPrimitive=require("../primitives").registerPrimitive,utils=require("../../../utils/");registerPrimitive("a-cursor",utils.extendDeep({},getMeshMixin(),{defaultComponents:{cursor:{},geometry:{primitive:"ring",radiusOuter:.016,radiusInner:.01,segmentsTheta:32},material:{color:"#000",shader:"flat",opacity:.8},position:{x:0,y:0,z:-1}},mappings:{far:"raycaster.far",fuse:"cursor.fuse","fuse-timeout":"cursor.fuseTimeout",interval:"raycaster.interval",objects:"raycaster.objects"}}));
},{"../../../utils/":210,"../getMeshMixin":149,"../primitives":151}],154:[function(require,module,exports){
var getMeshMixin=require("../getMeshMixin"),registerPrimitive=require("../primitives").registerPrimitive,utils=require("../../../utils/");registerPrimitive("a-curvedimage",utils.extendDeep({},getMeshMixin(),{defaultComponents:{geometry:{height:1,primitive:"cylinder",radius:2,segmentsRadial:48,thetaLength:270,openEnded:!0,thetaStart:0},material:{color:"#FFF",shader:"flat",side:"double",transparent:!0,repeat:"-1 1"}},mappings:{height:"geometry.height","open-ended":"geometry.openEnded",radius:"geometry.radius",segments:"geometry.segmentsRadial",start:"geometry.thetaStart","theta-length":"geometry.thetaLength","theta-start":"geometry.thetaStart",width:"geometry.thetaLength"}}));
},{"../../../utils/":210,"../getMeshMixin":149,"../primitives":151}],155:[function(require,module,exports){
var registerPrimitive=require("../primitives").registerPrimitive;registerPrimitive("a-gltf-model",{mappings:{src:"gltf-model"}});
},{"../primitives":151}],156:[function(require,module,exports){
var getMeshMixin=require("../getMeshMixin"),registerPrimitive=require("../primitives").registerPrimitive,utils=require("../../../utils/");registerPrimitive("a-image",utils.extendDeep({},getMeshMixin(),{defaultComponents:{geometry:{primitive:"plane"},material:{color:"#FFF",shader:"flat",side:"double",transparent:!0}},mappings:{height:"geometry.height",width:"geometry.width"}}));
},{"../../../utils/":210,"../getMeshMixin":149,"../primitives":151}],157:[function(require,module,exports){
var registerPrimitive=require("../primitives").registerPrimitive;registerPrimitive("a-light",{defaultComponents:{light:{}},mappings:{angle:"light.angle",color:"light.color","ground-color":"light.groundColor",decay:"light.decay",distance:"light.distance",intensity:"light.intensity",penumbra:"light.penumbra",type:"light.type",target:"light.target",envmap:"light.envMap"}});
},{"../primitives":151}],158:[function(require,module,exports){
var registerPrimitive=require("../primitives").registerPrimitive;registerPrimitive("a-link",{defaultComponents:{link:{visualAspectEnabled:!0}},mappings:{href:"link.href",image:"link.image",title:"link.title"}});
},{"../primitives":151}],159:[function(require,module,exports){
var meshMixin=require("../getMeshMixin")(),registerPrimitive=require("../primitives").registerPrimitive,utils=require("../../../utils/");registerPrimitive("a-obj-model",utils.extendDeep({},meshMixin,{defaultComponents:{"obj-model":{}},mappings:{src:"obj-model.obj",mtl:"obj-model.mtl"}}));
},{"../../../utils/":210,"../getMeshMixin":149,"../primitives":151}],160:[function(require,module,exports){
var getMeshMixin=require("../getMeshMixin"),registerPrimitive=require("../primitives").registerPrimitive,utils=require("../../../utils/"),meshPrimitives=require("./meshPrimitives");registerPrimitive("a-sky",utils.extendDeep({},getMeshMixin(),{defaultComponents:{geometry:{primitive:"sphere",radius:500,segmentsWidth:64,segmentsHeight:32},material:{color:"#FFF",side:"back",shader:"flat",npot:!0},scale:"-1 1 1"},mappings:utils.extendDeep({},meshPrimitives["a-sphere"].prototype.mappings)}));
},{"../../../utils/":210,"../getMeshMixin":149,"../primitives":151,"./meshPrimitives":165}],161:[function(require,module,exports){
var registerPrimitive=require("../primitives").registerPrimitive;registerPrimitive("a-sound",{defaultComponents:{sound:{}},mappings:{src:"sound.src",on:"sound.on",autoplay:"sound.autoplay",loop:"sound.loop",volume:"sound.volume"}});
},{"../primitives":151}],162:[function(require,module,exports){
var definePrimitive=require("../primitives").definePrimitive;definePrimitive("a-text",{text:{anchor:"align",width:5}});
},{"../primitives":151}],163:[function(require,module,exports){
var getMeshMixin=require("../getMeshMixin"),registerPrimitive=require("../primitives").registerPrimitive,utils=require("../../../utils/");registerPrimitive("a-video",utils.extendDeep({},getMeshMixin(),{defaultComponents:{geometry:{primitive:"plane"},material:{color:"#FFF",shader:"flat",side:"double",transparent:!0}},mappings:{height:"geometry.height",width:"geometry.width"}}));
},{"../../../utils/":210,"../getMeshMixin":149,"../primitives":151}],164:[function(require,module,exports){
var getMeshMixin=require("../getMeshMixin"),registerPrimitive=require("../primitives").registerPrimitive,utils=require("../../../utils/");registerPrimitive("a-videosphere",utils.extendDeep({},getMeshMixin(),{defaultComponents:{geometry:{primitive:"sphere",radius:500,segmentsWidth:64,segmentsHeight:32},material:{color:"#FFF",shader:"flat",side:"back",npot:!0},scale:"-1 1 1"},mappings:{radius:"geometry.radius","segments-height":"geometry.segmentsHeight","segments-width":"geometry.segmentsWidth"}}));
},{"../../../utils/":210,"../getMeshMixin":149,"../primitives":151}],165:[function(require,module,exports){
function unCamelCase(e){return e.replace(/([a-z])([A-Z])/g,"$1-$2").toLowerCase()}var getMeshMixin=require("../getMeshMixin"),geometries=require("../../../core/geometry").geometries,geometryNames=require("../../../core/geometry").geometryNames,registerPrimitive=require("../primitives").registerPrimitive,utils=require("../../../utils/"),meshPrimitives=module.exports={};geometryNames.forEach(function(e){var i=geometries[e],r=unCamelCase(e),t={};Object.keys(i.schema).forEach(function(e){t[unCamelCase(e)]="geometry."+e});var m="a-"+r,s=registerPrimitive(m,utils.extendDeep({},getMeshMixin(),{defaultComponents:{geometry:{primitive:e}},mappings:t}));meshPrimitives[m]=s});
},{"../../../core/geometry":136,"../../../utils/":210,"../getMeshMixin":149,"../primitives":151}],166:[function(require,module,exports){
var registerGeometry=require("../core/geometry").registerGeometry,THREE=require("../lib/three");registerGeometry("box",{schema:{depth:{default:1,min:0},height:{default:1,min:0},width:{default:1,min:0},segmentsHeight:{default:1,min:1,max:20,type:"int"},segmentsWidth:{default:1,min:1,max:20,type:"int"},segmentsDepth:{default:1,min:1,max:20,type:"int"}},init:function(e){this.geometry=new THREE.BoxGeometry(e.width,e.height,e.depth,e.segmentsWidth,e.segmentsHeight,e.segmentsDepth)}});
},{"../core/geometry":136,"../lib/three":183}],167:[function(require,module,exports){
var registerGeometry=require("../core/geometry").registerGeometry,THREE=require("../lib/three"),degToRad=THREE.Math.degToRad;registerGeometry("circle",{schema:{radius:{default:1,min:0},segments:{default:32,min:3,type:"int"},thetaLength:{default:360,min:0},thetaStart:{default:0}},init:function(e){this.geometry=new THREE.CircleGeometry(e.radius,e.segments,degToRad(e.thetaStart),degToRad(e.thetaLength))}});
},{"../core/geometry":136,"../lib/three":183}],168:[function(require,module,exports){
var registerGeometry=require("../core/geometry").registerGeometry,THREE=require("../lib/three"),degToRad=THREE.Math.degToRad;registerGeometry("cone",{schema:{height:{default:1,min:0},openEnded:{default:!1},radiusBottom:{default:1,min:0},radiusTop:{default:.01,min:0},segmentsHeight:{default:18,min:1,type:"int"},segmentsRadial:{default:36,min:3,type:"int"},thetaLength:{default:360,min:0},thetaStart:{default:0}},init:function(e){this.geometry=new THREE.CylinderGeometry(e.radiusTop,e.radiusBottom,e.height,e.segmentsRadial,e.segmentsHeight,e.openEnded,degToRad(e.thetaStart),degToRad(e.thetaLength))}});
},{"../core/geometry":136,"../lib/three":183}],169:[function(require,module,exports){
var registerGeometry=require("../core/geometry").registerGeometry,THREE=require("../lib/three"),degToRad=THREE.Math.degToRad;registerGeometry("cylinder",{schema:{height:{default:1,min:0},openEnded:{default:!1},radius:{default:1,min:0},segmentsHeight:{default:18,min:1,type:"int"},segmentsRadial:{default:36,min:3,type:"int"},thetaLength:{default:360,min:0},thetaStart:{default:0}},init:function(e){this.geometry=new THREE.CylinderGeometry(e.radius,e.radius,e.height,e.segmentsRadial,e.segmentsHeight,e.openEnded,degToRad(e.thetaStart),degToRad(e.thetaLength))}});
},{"../core/geometry":136,"../lib/three":183}],170:[function(require,module,exports){
var registerGeometry=require("../core/geometry").registerGeometry,THREE=require("../lib/three");registerGeometry("dodecahedron",{schema:{detail:{default:0,min:0,max:5,type:"int"},radius:{default:1,min:0}},init:function(e){this.geometry=new THREE.DodecahedronGeometry(e.radius,e.detail)}});
},{"../core/geometry":136,"../lib/three":183}],171:[function(require,module,exports){
var registerGeometry=require("../core/geometry").registerGeometry,THREE=require("../lib/three");registerGeometry("icosahedron",{schema:{detail:{default:0,min:0,max:5,type:"int"},radius:{default:1,min:0}},init:function(e){this.geometry=new THREE.IcosahedronGeometry(e.radius,e.detail)}});
},{"../core/geometry":136,"../lib/three":183}],172:[function(require,module,exports){
require("./box.js"),require("./circle.js"),require("./cone.js"),require("./cylinder.js"),require("./dodecahedron.js"),require("./icosahedron.js"),require("./octahedron.js"),require("./plane.js"),require("./ring.js"),require("./sphere.js"),require("./tetrahedron.js"),require("./torus.js"),require("./torusKnot.js"),require("./triangle.js");
},{"./box.js":166,"./circle.js":167,"./cone.js":168,"./cylinder.js":169,"./dodecahedron.js":170,"./icosahedron.js":171,"./octahedron.js":173,"./plane.js":174,"./ring.js":175,"./sphere.js":176,"./tetrahedron.js":177,"./torus.js":178,"./torusKnot.js":179,"./triangle.js":180}],173:[function(require,module,exports){
var registerGeometry=require("../core/geometry").registerGeometry,THREE=require("../lib/three");registerGeometry("octahedron",{schema:{detail:{default:0,min:0,max:5,type:"int"},radius:{default:1,min:0}},init:function(e){this.geometry=new THREE.OctahedronGeometry(e.radius,e.detail)}});
},{"../core/geometry":136,"../lib/three":183}],174:[function(require,module,exports){
var registerGeometry=require("../core/geometry").registerGeometry,THREE=require("../lib/three");registerGeometry("plane",{schema:{height:{default:1,min:0},width:{default:1,min:0},segmentsHeight:{default:1,min:1,max:20,type:"int"},segmentsWidth:{default:1,min:1,max:20,type:"int"}},init:function(e){this.geometry=new THREE.PlaneGeometry(e.width,e.height,e.segmentsWidth,e.segmentsHeight)}});
},{"../core/geometry":136,"../lib/three":183}],175:[function(require,module,exports){
var registerGeometry=require("../core/geometry").registerGeometry,THREE=require("../lib/three"),degToRad=THREE.Math.degToRad;registerGeometry("ring",{schema:{radiusInner:{default:.8,min:0},radiusOuter:{default:1.2,min:0},segmentsPhi:{default:10,min:1,type:"int"},segmentsTheta:{default:32,min:3,type:"int"},thetaLength:{default:360,min:0},thetaStart:{default:0}},init:function(e){this.geometry=new THREE.RingGeometry(e.radiusInner,e.radiusOuter,e.segmentsTheta,e.segmentsPhi,degToRad(e.thetaStart),degToRad(e.thetaLength))}});
},{"../core/geometry":136,"../lib/three":183}],176:[function(require,module,exports){
var registerGeometry=require("../core/geometry").registerGeometry,THREE=require("../lib/three"),degToRad=THREE.Math.degToRad;registerGeometry("sphere",{schema:{radius:{default:1,min:0},phiLength:{default:360},phiStart:{default:0,min:0},thetaLength:{default:180,min:0},thetaStart:{default:0},segmentsHeight:{default:18,min:2,type:"int"},segmentsWidth:{default:36,min:3,type:"int"}},init:function(e){this.geometry=new THREE.SphereGeometry(e.radius,e.segmentsWidth,e.segmentsHeight,degToRad(e.phiStart),degToRad(e.phiLength),degToRad(e.thetaStart),degToRad(e.thetaLength))}});
},{"../core/geometry":136,"../lib/three":183}],177:[function(require,module,exports){
var registerGeometry=require("../core/geometry").registerGeometry,THREE=require("../lib/three");registerGeometry("tetrahedron",{schema:{detail:{default:0,min:0,max:5,type:"int"},radius:{default:1,min:0}},init:function(e){this.geometry=new THREE.TetrahedronGeometry(e.radius,e.detail)}});
},{"../core/geometry":136,"../lib/three":183}],178:[function(require,module,exports){
var registerGeometry=require("../core/geometry").registerGeometry,THREE=require("../lib/three"),degToRad=THREE.Math.degToRad;registerGeometry("torus",{schema:{arc:{default:360},radius:{default:1,min:0},radiusTubular:{default:.2,min:0},segmentsRadial:{default:36,min:2,type:"int"},segmentsTubular:{default:32,min:3,type:"int"}},init:function(e){this.geometry=new THREE.TorusGeometry(e.radius,2*e.radiusTubular,e.segmentsRadial,e.segmentsTubular,degToRad(e.arc))}});
},{"../core/geometry":136,"../lib/three":183}],179:[function(require,module,exports){
var registerGeometry=require("../core/geometry").registerGeometry,THREE=require("../lib/three");registerGeometry("torusKnot",{schema:{p:{default:2,min:1},q:{default:3,min:1},radius:{default:1,min:0},radiusTubular:{default:.2,min:0},segmentsRadial:{default:8,min:3,type:"int"},segmentsTubular:{default:100,min:3,type:"int"}},init:function(e){this.geometry=new THREE.TorusKnotGeometry(e.radius,2*e.radiusTubular,e.segmentsTubular,e.segmentsRadial,e.p,e.q)}});
},{"../core/geometry":136,"../lib/three":183}],180:[function(require,module,exports){
var registerGeometry=require("../core/geometry").registerGeometry,THREE=require("../lib/three"),quaternion=new THREE.Quaternion,rotateVector=new THREE.Vector3(0,0,1),uvMinVector=new THREE.Vector2,uvMaxVector=new THREE.Vector2,uvScaleVector=new THREE.Vector2;registerGeometry("triangle",{schema:{vertexA:{type:"vec3",default:{x:0,y:.5,z:0}},vertexB:{type:"vec3",default:{x:-.5,y:-.5,z:0}},vertexC:{type:"vec3",default:{x:.5,y:-.5,z:0}}},init:function(e){var t,r,o,n,c,a,i,u,x;o=new THREE.Triangle,o.a.set(e.vertexA.x,e.vertexA.y,e.vertexA.z),o.b.set(e.vertexB.x,e.vertexB.y,e.vertexB.z),o.c.set(e.vertexC.x,e.vertexC.y,e.vertexC.z),r=o.getNormal(new THREE.Vector3),quaternion.setFromUnitVectors(r,rotateVector),n=o.a.clone().applyQuaternion(quaternion),c=o.b.clone().applyQuaternion(quaternion),a=o.c.clone().applyQuaternion(quaternion),uvMinVector.set(Math.min(n.x,c.x,a.x),Math.min(n.y,c.y,a.y)),uvMaxVector.set(Math.max(n.x,c.x,a.x),Math.max(n.y,c.y,a.y)),uvScaleVector.set(0,0).subVectors(uvMaxVector,uvMinVector),n=(new THREE.Vector2).subVectors(n,uvMinVector).divide(uvScaleVector),c=(new THREE.Vector2).subVectors(c,uvMinVector).divide(uvScaleVector),a=(new THREE.Vector2).subVectors(a,uvMinVector).divide(uvScaleVector),t=this.geometry=new THREE.BufferGeometry,i=[o.a.x,o.a.y,o.a.z,o.b.x,o.b.y,o.b.z,o.c.x,o.c.y,o.c.z],u=[r.x,r.y,r.z,r.x,r.y,r.z,r.x,r.y,r.z],x=[n.x,n.y,c.x,c.y,a.x,a.y],t.setAttribute("position",new THREE.Float32BufferAttribute(i,3)),t.setAttribute("normal",new THREE.Float32BufferAttribute(u,3)),t.setAttribute("uv",new THREE.Float32BufferAttribute(x,2))}});
},{"../core/geometry":136,"../lib/three":183}],181:[function(require,module,exports){
if(window.Promise=window.Promise||require("promise-polyfill"),window.hasNativeWebVRImplementation=!!window.navigator.getVRDisplays||!!window.navigator.getVRDevices,window.hasNativeWebXRImplementation=void 0!==navigator.xr,!window.hasNativeWebXRImplementation&&!window.hasNativeWebVRImplementation){var isIOSOlderThan10=require("./utils/isIOSOlderThan10"),bufferScale=isIOSOlderThan10(window.navigator.userAgent)?1/window.devicePixelRatio:1,WebVRPolyfill=require("webvr-polyfill"),polyfillConfig={BUFFER_SCALE:bufferScale,CARDBOARD_UI_DISABLED:!0,ROTATE_INSTRUCTIONS_DISABLED:!0,MOBILE_WAKE_LOCK:!!window.cordova};window.webvrpolyfill=new WebVRPolyfill(polyfillConfig)}var utils=require("./utils/"),debug=utils.debug;utils.isIE11&&(require("custom-event-polyfill"),require("../vendor/starts-with-polyfill"));var error=debug("A-Frame:error"),warn=debug("A-Frame:warn");window.document.currentScript&&window.document.currentScript.parentNode!==window.document.head&&!window.debug&&warn("Put the A-Frame <script> tag in the <head> of the HTML *before* the scene to ensure everything for A-Frame is properly registered before they are used from HTML."),window.cordova||"file:"!==window.location.protocol||error("This HTML file is currently being served via the file:// protocol. Assets, textures, and models WILL NOT WORK due to cross-origin policy! Please use a local or hosted server: https://aframe.io/docs/0.5.0/introduction/getting-started.html#using-a-local-server."),require("present"),utils.device.isBrowserEnvironment&&(require("./style/aframe.css"),require("./style/rStats.css"));var AScene=require("./core/scene/a-scene").AScene,components=require("./core/component").components,registerComponent=require("./core/component").registerComponent,registerGeometry=require("./core/geometry").registerGeometry,registerPrimitive=require("./extras/primitives/primitives").registerPrimitive,registerShader=require("./core/shader").registerShader,registerSystem=require("./core/system").registerSystem,shaders=require("./core/shader").shaders,systems=require("./core/system").systems,THREE=window.THREE=require("./lib/three"),pkg=require("../package");require("./components/index"),require("./geometries/index"),require("./shaders/index"),require("./systems/index");var ANode=require("./core/a-node"),AEntity=require("./core/a-entity");require("./core/a-assets"),require("./core/a-cubemap"),require("./core/a-mixin"),require("./extras/components/"),require("./extras/primitives/"),console.log("A-Frame Version: 1.2.0 (Date 2021-11-22, Commit #cf65f451)"),console.log("THREE Version (https://github.com/supermedium/three.js):",pkg.dependencies["super-three"]),console.log("WebVR Polyfill Version:",pkg.dependencies["webvr-polyfill"]),module.exports=window.AFRAME={AComponent:require("./core/component").Component,AEntity:AEntity,ANode:ANode,ANIME:require("super-animejs"),AScene:AScene,components:components,coreComponents:Object.keys(components),geometries:require("./core/geometry").geometries,registerComponent:registerComponent,registerElement:require("./core/a-register-element").registerElement,registerGeometry:registerGeometry,registerPrimitive:registerPrimitive,registerShader:registerShader,registerSystem:registerSystem,primitives:{getMeshMixin:require("./extras/primitives/getMeshMixin"),primitives:require("./extras/primitives/primitives").primitives},scenes:require("./core/scene/scenes"),schema:require("./core/schema"),shaders:shaders,systems:systems,THREE:THREE,utils:utils,version:pkg.version};
},{"../package":74,"../vendor/starts-with-polyfill":223,"./components/index":87,"./core/a-assets":129,"./core/a-cubemap":130,"./core/a-entity":131,"./core/a-mixin":132,"./core/a-node":133,"./core/a-register-element":134,"./core/component":135,"./core/geometry":136,"./core/scene/a-scene":138,"./core/scene/scenes":142,"./core/schema":144,"./core/shader":145,"./core/system":146,"./extras/components/":147,"./extras/primitives/":150,"./extras/primitives/getMeshMixin":149,"./extras/primitives/primitives":151,"./geometries/index":172,"./lib/three":183,"./shaders/index":185,"./style/aframe.css":191,"./style/rStats.css":192,"./systems/index":196,"./utils/":210,"./utils/isIOSOlderThan10":213,"custom-event-polyfill":7,"present":48,"promise-polyfill":50,"super-animejs":56,"webvr-polyfill":69}],182:[function(require,module,exports){
window.aframeStats=function(t){function e(){i("te").set(n()),window.performance.getEntriesByName&&i("lt").set(window.performance.getEntriesByName("render-started")[0].startTime.toFixed(0))}function n(){var t=c.querySelectorAll("*");return Array.prototype.slice.call(t).filter(function(t){return t.isEntity}),t.length}function r(){}function a(){}function o(t){i=t}var i=null,c=t;return{update:e,start:r,end:a,attach:o,values:{te:{caption:"Entities"},lt:{caption:"Load Time"}},groups:[{caption:"A-Frame",values:["te","lt"]}],fractions:[]}},"object"==typeof module&&(module.exports={aframeStats:window.aframeStats});
},{}],183:[function(require,module,exports){
(function (global){
var THREE=global.THREE=require("super-three");THREE.TextureLoader&&(THREE.TextureLoader.prototype.crossOrigin="anonymous"),THREE.ImageLoader&&(THREE.ImageLoader.prototype.crossOrigin="anonymous"),THREE.Cache&&(THREE.Cache.enabled=!0),require("../../vendor/DeviceOrientationControls"),require("super-three/examples/js/loaders/DRACOLoader"),require("super-three/examples/js/loaders/GLTFLoader"),require("super-three/examples/js/loaders/OBJLoader"),require("super-three/examples/js/loaders/MTLLoader"),require("super-three/examples/js/utils/BufferGeometryUtils"),require("super-three/examples/js/lights/LightProbeGenerator"),THREE.DRACOLoader.prototype.crossOrigin="anonymous",THREE.GLTFLoader.prototype.crossOrigin="anonymous",THREE.MTLLoader.prototype.crossOrigin="anonymous",THREE.OBJLoader.prototype.crossOrigin="anonymous",module.exports=THREE;
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})

},{"../../vendor/DeviceOrientationControls":220,"super-three":57,"super-three/examples/js/lights/LightProbeGenerator":58,"super-three/examples/js/loaders/DRACOLoader":59,"super-three/examples/js/loaders/GLTFLoader":60,"super-three/examples/js/loaders/MTLLoader":61,"super-three/examples/js/loaders/OBJLoader":62,"super-three/examples/js/utils/BufferGeometryUtils":63}],184:[function(require,module,exports){
function getMaterialData(e,t){return t.color.set(e.color),t.fog=e.fog,t.wireframe=e.wireframe,t.wireframeLinewidth=e.wireframeLinewidth,t}var registerShader=require("../core/shader").registerShader,THREE=require("../lib/three"),utils=require("../utils/");module.exports.Shader=registerShader("flat",{schema:{color:{type:"color"},fog:{default:!0},height:{default:256},offset:{type:"vec2",default:{x:0,y:0}},repeat:{type:"vec2",default:{x:1,y:1}},src:{type:"map"},width:{default:512},wireframe:{default:!1},wireframeLinewidth:{default:2}},init:function(e){this.rendererSystem=this.el.sceneEl.systems.renderer,this.materialData={color:new THREE.Color},this.textureSrc=null,getMaterialData(e,this.materialData),this.rendererSystem.applyColorCorrection(this.materialData.color),this.material=new THREE.MeshBasicMaterial(this.materialData),utils.material.updateMap(this,e)},update:function(e){this.updateMaterial(e),utils.material.updateMap(this,e)},updateMaterial:function(e){var t;getMaterialData(e,this.materialData),this.rendererSystem.applyColorCorrection(this.materialData.color);for(t in this.materialData)this.material[t]=this.materialData[t]}});
},{"../core/shader":145,"../lib/three":183,"../utils/":210}],185:[function(require,module,exports){
require("./flat"),require("./standard"),require("./sdf"),require("./msdf"),require("./ios10hls"),require("./shadow");
},{"./flat":184,"./ios10hls":186,"./msdf":187,"./sdf":188,"./shadow":189,"./standard":190}],186:[function(require,module,exports){
var registerShader=require("../core/shader").registerShader;module.exports.Shader=registerShader("ios10hls",{schema:{src:{type:"map",is:"uniform"},opacity:{type:"number",is:"uniform",default:1}},vertexShader:["varying vec2 vUV;","void main(void) {","  gl_Position = projectionMatrix * modelViewMatrix * vec4(position, 1.0);","  vUV = uv;","}"].join("\n"),fragmentShader:["uniform sampler2D src;","uniform float opacity;","varying vec2 vUV;","void main() {","  vec2 offset = vec2(0, 0);","  vec2 repeat = vec2(1, 1);","  vec4 color = texture2D(src, vec2(vUV.x / repeat.x + offset.x, (1.0 - vUV.y) / repeat.y + offset.y)).bgra;","  gl_FragColor = vec4(color.rgb, opacity);","}"].join("\n")});
},{"../core/shader":145}],187:[function(require,module,exports){
var registerShader=require("../core/shader").registerShader,isWebGL2AVailable=!!document.createElement("canvas").getContext("webgl2"),VERTEX_SHADER_WEBGL1=["attribute vec2 uv;","attribute vec3 position;","uniform mat4 projectionMatrix;","uniform mat4 modelViewMatrix;","varying vec2 vUV;","void main(void) {","  gl_Position = projectionMatrix * modelViewMatrix * vec4(position, 1.0);","  vUV = uv;","}"].join("\n"),VERTEX_SHADER_WEBGL2=["#version 300 es","in vec2 uv;","in vec3 position;","uniform mat4 projectionMatrix;","uniform mat4 modelViewMatrix;","out vec2 vUV;","void main(void) {","  gl_Position = projectionMatrix * modelViewMatrix * vec4(position, 1.0);","  vUV = uv;","}"].join("\n"),VERTEX_SHADER=isWebGL2AVailable?VERTEX_SHADER_WEBGL2:VERTEX_SHADER_WEBGL1,FRAGMENT_SHADER_WEBGL1=["#ifdef GL_OES_standard_derivatives","#extension GL_OES_standard_derivatives: enable","#endif","precision highp float;","uniform bool negate;","uniform float alphaTest;","uniform float opacity;","uniform sampler2D map;","uniform vec3 color;","varying vec2 vUV;","float median(float r, float g, float b) {","  return max(min(r, g), min(max(r, g), b));","}","#define BIG_ENOUGH 0.001","#define MODIFIED_ALPHATEST (0.02 * isBigEnough / BIG_ENOUGH)","void main() {","  vec3 sampleColor = texture2D(map, vUV).rgb;","  if (negate) { sampleColor = 1.0 - sampleColor; }","  float sigDist = median(sampleColor.r, sampleColor.g, sampleColor.b) - 0.5;","  float alpha = clamp(sigDist / fwidth(sigDist) + 0.5, 0.0, 1.0);","  float dscale = 0.353505;","  vec2 duv = dscale * (dFdx(vUV) + dFdy(vUV));","  float isBigEnough = max(abs(duv.x), abs(duv.y));","  // Do modified alpha test.","  if (isBigEnough > BIG_ENOUGH) {","    float ratio = BIG_ENOUGH / isBigEnough;","    alpha = ratio * alpha + (1.0 - ratio) * (sigDist + 0.5);","  }","  // Do modified alpha test.","  if (alpha < alphaTest * MODIFIED_ALPHATEST) { discard; return; }","  gl_FragColor = vec4(color.xyz, alpha * opacity);","}"].join("\n"),FRAGMENT_SHADER_WEBGL2=["#version 300 es","precision highp float;","uniform bool negate;","uniform float alphaTest;","uniform float opacity;","uniform sampler2D map;","uniform vec3 color;","in vec2 vUV;","out vec4 fragColor;","float median(float r, float g, float b) {","  return max(min(r, g), min(max(r, g), b));","}","#define BIG_ENOUGH 0.001","#define MODIFIED_ALPHATEST (0.02 * isBigEnough / BIG_ENOUGH)","void main() {","  vec3 sampleColor = texture(map, vUV).rgb;","  if (negate) { sampleColor = 1.0 - sampleColor; }","  float sigDist = median(sampleColor.r, sampleColor.g, sampleColor.b) - 0.5;","  float alpha = clamp(sigDist / fwidth(sigDist) + 0.5, 0.0, 1.0);","  float dscale = 0.353505;","  vec2 duv = dscale * (dFdx(vUV) + dFdy(vUV));","  float isBigEnough = max(abs(duv.x), abs(duv.y));","  // Do modified alpha test.","  if (isBigEnough > BIG_ENOUGH) {","    float ratio = BIG_ENOUGH / isBigEnough;","    alpha = ratio * alpha + (1.0 - ratio) * (sigDist + 0.5);","  }","  // Do modified alpha test.","  if (alpha < alphaTest * MODIFIED_ALPHATEST) { discard; return; }","  fragColor = vec4(color.xyz, alpha * opacity);","}"].join("\n"),FRAGMENT_SHADER=isWebGL2AVailable?FRAGMENT_SHADER_WEBGL2:FRAGMENT_SHADER_WEBGL1;module.exports.Shader=registerShader("msdf",{schema:{alphaTest:{type:"number",is:"uniform",default:.5},color:{type:"color",is:"uniform",default:"white"},map:{type:"map",is:"uniform"},negate:{type:"boolean",is:"uniform",default:!0},opacity:{type:"number",is:"uniform",default:1}},raw:!0,vertexShader:VERTEX_SHADER,fragmentShader:FRAGMENT_SHADER});
},{"../core/shader":145}],188:[function(require,module,exports){
var registerShader=require("../core/shader").registerShader,isWebGL2AVailable=!!document.createElement("canvas").getContext("webgl2"),VERTEX_SHADER_WEBGL1=["attribute vec2 uv;","attribute vec3 position;","uniform mat4 projectionMatrix;","uniform mat4 modelViewMatrix;","varying vec2 vUV;","void main(void) {","  gl_Position = projectionMatrix * modelViewMatrix * vec4(position, 1.0);","  vUV = uv;","}"].join("\n"),VERTEX_SHADER_WEBGL2=["#version 300 es","in vec2 uv;","in vec3 position;","uniform mat4 projectionMatrix;","uniform mat4 modelViewMatrix;","out vec2 vUV;","void main(void) {","  gl_Position = projectionMatrix * modelViewMatrix * vec4(position, 1.0);","  vUV = uv;","}"].join("\n"),VERTEX_SHADER=isWebGL2AVailable?VERTEX_SHADER_WEBGL2:VERTEX_SHADER_WEBGL1,FRAGMENT_SHADER_WEBGL1=["#ifdef GL_OES_standard_derivatives","#extension GL_OES_standard_derivatives: enable","#endif","precision highp float;","uniform float alphaTest;","uniform float opacity;","uniform sampler2D map;","uniform vec3 color;","varying vec2 vUV;","#ifdef GL_OES_standard_derivatives","  float contour(float width, float value) {","    return smoothstep(0.5 - value, 0.5 + value, width);","  }","#else","  float aastep(float value, float afwidth) {","    return smoothstep(0.5 - afwidth, 0.5 + afwidth, value);","  }","#endif","#define BIG_ENOUGH 0.001","#define MODIFIED_ALPHATEST (0.02 * isBigEnough / BIG_ENOUGH)","#define ALL_SMOOTH 0.4","#define ALL_ROUGH 0.02","#define DISCARD_ALPHA (alphaTest / (2.2 - 1.2 * ratio))","void main() {","  #ifdef GL_OES_standard_derivatives","    vec2 uv = vUV;","    vec4 texColor = texture2D(map, uv);","    float dist = texColor.a;","    float width = fwidth(dist);","    float alpha = contour(dist, width);","    float dscale = 0.353505;","    vec2 duv = dscale * (dFdx(uv) + dFdy(uv));","    float isBigEnough = max(abs(duv.x), abs(duv.y));","    if (isBigEnough > BIG_ENOUGH) {","      float ratio = BIG_ENOUGH / isBigEnough;","      alpha = ratio * alpha + (1.0 - ratio) * dist;","    }","    if (isBigEnough <= BIG_ENOUGH) {","      vec4 box = vec4 (uv - duv, uv + duv);","      alpha = (alpha + 0.5 * (","        contour(texture2D(map, box.xy).a, width)","        + contour(texture2D(map, box.zw).a, width)","        + contour(texture2D(map, box.xw).a, width)","        + contour(texture2D(map, box.zy).a, width)","      )) / 3.0;","    }","    if (alpha < alphaTest * MODIFIED_ALPHATEST) { discard; return; }","  #else","    vec4 texColor = texture2D(map, vUV);","    float value = texColor.a;","    float afwidth = (1.0 / 32.0) * (1.4142135623730951 / (2.0 * gl_FragCoord.w));","    float alpha = aastep(value, afwidth);","    float ratio = (gl_FragCoord.w >= ALL_SMOOTH) ? 1.0 : (gl_FragCoord.w < ALL_ROUGH) ? 0.0 : (gl_FragCoord.w - ALL_ROUGH) / (ALL_SMOOTH - ALL_ROUGH);","    if (alpha < alphaTest) { if (ratio >= 1.0) { discard; return; } alpha = 0.0; }","    alpha = alpha * ratio + (1.0 - ratio) * value;","    if (ratio < 1.0 && alpha <= DISCARD_ALPHA) { discard; return; }","  #endif","  gl_FragColor = vec4(color, opacity * alpha);","}"].join("\n"),FRAGMENT_SHADER_WEBGL2=["#version 300 es","precision highp float;","uniform float alphaTest;","uniform float opacity;","uniform sampler2D map;","uniform vec3 color;","in vec2 vUV;","out vec4 fragColor;","#ifdef GL_OES_standard_derivatives","  float contour(float width, float value) {","    return smoothstep(0.5 - value, 0.5 + value, width);","  }","#else","  float aastep(float value, float afwidth) {","    return smoothstep(0.5 - afwidth, 0.5 + afwidth, value);","  }","#endif","#define BIG_ENOUGH 0.001","#define MODIFIED_ALPHATEST (0.02 * isBigEnough / BIG_ENOUGH)","#define ALL_SMOOTH 0.4","#define ALL_ROUGH 0.02","#define DISCARD_ALPHA (alphaTest / (2.2 - 1.2 * ratio))","void main() {","  #ifdef GL_OES_standard_derivatives","    vec2 uv = vUV;","    vec4 texColor = texture(map, uv);","    float dist = texColor.a;","    float width = fwidth(dist);","    float alpha = contour(dist, width);","    float dscale = 0.353505;","    vec2 duv = dscale * (dFdx(uv) + dFdy(uv));","    float isBigEnough = max(abs(duv.x), abs(duv.y));","    if (isBigEnough > BIG_ENOUGH) {","      float ratio = BIG_ENOUGH / isBigEnough;","      alpha = ratio * alpha + (1.0 - ratio) * dist;","    }","    if (isBigEnough <= BIG_ENOUGH) {","      vec4 box = vec4 (uv - duv, uv + duv);","      alpha = (alpha + 0.5 * (","        contour(texture(map, box.xy).a, width)","        + contour(texture(map, box.zw).a, width)","        + contour(texture(map, box.xw).a, width)","        + contour(texture(map, box.zy).a, width)","      )) / 3.0;","    }","    if (alpha < alphaTest * MODIFIED_ALPHATEST) { discard; return; }","  #else","    vec4 texColor = texture(map, vUV);","    float value = texColor.a;","    float afwidth = (1.0 / 32.0) * (1.4142135623730951 / (2.0 * gl_FragCoord.w));","    float alpha = aastep(value, afwidth);","    float ratio = (gl_FragCoord.w >= ALL_SMOOTH) ? 1.0 : (gl_FragCoord.w < ALL_ROUGH) ? 0.0 : (gl_FragCoord.w - ALL_ROUGH) / (ALL_SMOOTH - ALL_ROUGH);","    if (alpha < alphaTest) { if (ratio >= 1.0) { discard; return; } alpha = 0.0; }","    alpha = alpha * ratio + (1.0 - ratio) * value;","    if (ratio < 1.0 && alpha <= DISCARD_ALPHA) { discard; return; }","  #endif","  fragColor = vec4(color, opacity * alpha);","}"].join("\n"),FRAGMENT_SHADER=isWebGL2AVailable?FRAGMENT_SHADER_WEBGL2:FRAGMENT_SHADER_WEBGL1;module.exports.Shader=registerShader("sdf",{schema:{alphaTest:{type:"number",is:"uniform",default:.5},color:{type:"color",is:"uniform",default:"white"},map:{type:"map",is:"uniform"},opacity:{type:"number",is:"uniform",default:1}},raw:!0,vertexShader:VERTEX_SHADER,fragmentShader:FRAGMENT_SHADER});
},{"../core/shader":145}],189:[function(require,module,exports){
var registerShader=require("../core/shader").registerShader,THREE=require("../lib/three");module.exports.Shader=registerShader("shadow",{schema:{opacity:{default:.5},transparent:{default:!0},alphaToCoverage:{default:!0}},init:function(e){this.rendererSystem=this.el.sceneEl.systems.renderer,this.material=new THREE.ShadowMaterial},update:function(e){this.material.opacity=e.opacity,this.material.alphaToCoverage=e.alphaToCoverage,this.material.transparent=e.transparent}});
},{"../core/shader":145,"../lib/three":183}],190:[function(require,module,exports){
function getMaterialData(e,t){return t.color.set(e.color),t.emissive.set(e.emissive),t.emissiveIntensity=e.emissiveIntensity,t.fog=e.fog,t.metalness=e.metalness,t.roughness=e.roughness,t.wireframe=e.wireframe,t.wireframeLinewidth=e.wireframeLinewidth,e.normalMap&&(t.normalScale=e.normalScale),e.ambientOcclusionMap&&(t.aoMapIntensity=e.ambientOcclusionMapIntensity),e.displacementMap&&(t.displacementScale=e.displacementScale,t.displacementBias=e.displacementBias),t}var registerShader=require("../core/shader").registerShader,THREE=require("../lib/three"),utils=require("../utils/"),CubeLoader=new THREE.CubeTextureLoader,texturePromises={};module.exports.Shader=registerShader("standard",{schema:{ambientOcclusionMap:{type:"map"},ambientOcclusionMapIntensity:{default:1},ambientOcclusionTextureOffset:{type:"vec2"},ambientOcclusionTextureRepeat:{type:"vec2",default:{x:1,y:1}},color:{type:"color"},displacementMap:{type:"map"},displacementScale:{default:1},displacementBias:{default:.5},displacementTextureOffset:{type:"vec2"},displacementTextureRepeat:{type:"vec2",default:{x:1,y:1}},emissive:{type:"color",default:"#000"},emissiveIntensity:{default:1},envMap:{default:""},fog:{default:!0},height:{default:256},metalness:{default:0,min:0,max:1},metalnessMap:{type:"map"},metalnessTextureOffset:{type:"vec2"},metalnessTextureRepeat:{type:"vec2",default:{x:1,y:1}},normalMap:{type:"map"},normalScale:{type:"vec2",default:{x:1,y:1}},normalTextureOffset:{type:"vec2"},normalTextureRepeat:{type:"vec2",default:{x:1,y:1}},offset:{type:"vec2",default:{x:0,y:0}},repeat:{type:"vec2",default:{x:1,y:1}},roughness:{default:.5,min:0,max:1},roughnessMap:{type:"map"},roughnessTextureOffset:{type:"vec2"},roughnessTextureRepeat:{type:"vec2",default:{x:1,y:1}},sphericalEnvMap:{type:"map"},src:{type:"map"},width:{default:512},wireframe:{default:!1},wireframeLinewidth:{default:2}},init:function(e){this.rendererSystem=this.el.sceneEl.systems.renderer,this.materialData={color:new THREE.Color,emissive:new THREE.Color},getMaterialData(e,this.materialData),this.rendererSystem.applyColorCorrection(this.materialData.color),this.rendererSystem.applyColorCorrection(this.materialData.emissive),this.material=new THREE.MeshStandardMaterial(this.materialData),utils.material.updateMap(this,e),e.normalMap&&utils.material.updateDistortionMap("normal",this,e),e.displacementMap&&utils.material.updateDistortionMap("displacement",this,e),e.ambientOcclusionMap&&utils.material.updateDistortionMap("ambientOcclusion",this,e),e.metalnessMap&&utils.material.updateDistortionMap("metalness",this,e),e.roughnessMap&&utils.material.updateDistortionMap("roughness",this,e),this.updateEnvMap(e)},update:function(e){this.updateMaterial(e),utils.material.updateMap(this,e),e.normalMap&&utils.material.updateDistortionMap("normal",this,e),e.displacementMap&&utils.material.updateDistortionMap("displacement",this,e),e.ambientOcclusionMap&&utils.material.updateDistortionMap("ambientOcclusion",this,e),e.metalnessMap&&utils.material.updateDistortionMap("metalness",this,e),e.roughnessMap&&utils.material.updateDistortionMap("roughness",this,e),this.updateEnvMap(e)},updateMaterial:function(e){var t,a=this.material;getMaterialData(e,this.materialData),this.rendererSystem.applyColorCorrection(this.materialData.color),this.rendererSystem.applyColorCorrection(this.materialData.emissive);for(t in this.materialData)a[t]=this.materialData[t]},updateEnvMap:function(e){var t=this,a=this.material,i=e.envMap,s=e.sphericalEnvMap;return!i&&!s||this.isLoadingEnvMap?(a.envMap=null,void(a.needsUpdate=!0)):(this.isLoadingEnvMap=!0,s?void this.el.sceneEl.systems.material.loadTexture(s,{src:s},function(e){t.isLoadingEnvMap=!1,e.mapping=THREE.EquirectangularReflectionMapping,a.envMap=e,utils.material.handleTextureEvents(t.el,e),a.needsUpdate=!0}):texturePromises[i]?void texturePromises[i].then(function(e){t.isLoadingEnvMap=!1,a.envMap=e,utils.material.handleTextureEvents(t.el,e),a.needsUpdate=!0}):void(texturePromises[i]=new Promise(function(e){utils.srcLoader.validateCubemapSrc(i,function(i){CubeLoader.load(i,function(i){t.isLoadingEnvMap=!1,a.envMap=i,utils.material.handleTextureEvents(t.el,i),e(i)})})})))}});
},{"../core/shader":145,"../lib/three":183,"../utils/":210}],191:[function(require,module,exports){
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rgba(0,0,0,.35)}.a-enter-ar-button{background:url(\"data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='108' height='62' viewBox='0 0 108 62'%3E%3Ctitle%3Eaframe-armode-noborder-reduced-tracking%3C/title%3E%3Cpath d='M96,0H12A12,12,0,0,0,0,12V50A12,12,0,0,0,12,62H96a12,12,0,0,0,12-12V12A12,12,0,0,0,96,0Zm8,50a8,8,0,0,1-8,8H12a8,8,0,0,1-8-8V12a8,8,0,0,1,8-8H96a8,8,0,0,1,8,8Z' fill='%23fff'/%3E%3Cpath d='M43.35,39.82H32.51L30.45,46H23.88L35,16h5.73L52,46H45.43Zm-9.17-5h7.5L37.91,23.58Z' fill='%23fff'/%3E%3Cpath d='M68.11,35H63.18V46H57V16H68.15q5.31,0,8.2,2.37a8.18,8.18,0,0,1,2.88,6.7,9.22,9.22,0,0,1-1.33,5.12,9.09,9.09,0,0,1-4,3.26l6.49,12.26V46H73.73Zm-4.93-5h5a5.09,5.09,0,0,0,3.6-1.18,4.21,4.21,0,0,0,1.28-3.27,4.56,4.56,0,0,0-1.2-3.34A5,5,0,0,0,68.15,21h-5Z' fill='%23fff'/%3E%3C/svg%3E\") 50% 50% no-repeat rgba(0,0,0,.2)}.a-enter-ar-button,.a-enter-vr-button{background-size:90% 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center/50% 50% no-repeat rgba(244,244,244,1);bottom:0;font-size:14px;font-weight:600;left:0;line-height:20px;right:0;position:fixed;top:0;z-index:9999999}.a-orientation-modal:after{color:#666;content:\"Insert phone into Cardboard holder.\";display:block;position:absolute;text-align:center;top:70%;transform:translateY(-70%);width:100%}.a-orientation-modal button{background:url(data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A//www.w3.org/2000/svg%22%20xmlns%3Axlink%3D%22http%3A//www.w3.org/1999/xlink%22%20version%3D%221.1%22%20x%3D%220px%22%20y%3D%220px%22%20viewBox%3D%220%200%20100%20100%22%20enable-background%3D%22new%200%200%20100%20100%22%20xml%3Aspace%3D%22preserve%22%3E%3Cpath%20fill%3D%22%23000000%22%20d%3D%22M55.209%2C50l17.803-17.803c1.416-1.416%2C1.416-3.713%2C0-5.129c-1.416-1.417-3.713-1.417-5.129%2C0L50.08%2C44.872%20%20L32.278%2C27.069c-1.416-1.417-3.714-1.417-5.129%2C0c-1.417%2C1.416-1.417%2C3.713%2C0%2C5.129L44.951%2C50L27.149%2C67.803%20%20c-1.417%2C1.416-1.417%2C3.713%2C0%2C5.129c0.708%2C0.708%2C1.636%2C1.062%2C2.564%2C1.062c0.928%2C0%2C1.856-0.354%2C2.564-1.062L50.08%2C55.13l17.803%2C17.802%20%20c0.708%2C0.708%2C1.637%2C1.062%2C2.564%2C1.062s1.856-0.354%2C2.564-1.062c1.416-1.416%2C1.416-3.713%2C0-5.129L55.209%2C50z%22%3E%3C/path%3E%3C/svg%3E) no-repeat;border:none;height:50px;text-indent:-9999px;width:50px}.a-loader-title{background-color:rgba(0,0,0,.6);font-family:sans-serif,monospace;text-align:center;font-size:20px;height:50px;font-weight:300;line-height:50px;position:absolute;right:0;left:0;top:0;color:#fff}.a-modal{background:0 0/50% 50% rgba(0,0,0,.6);bottom:0;font-size:14px;font-weight:600;left:0;line-height:20px;right:0;position:fixed;top:0;z-index:9999999}.a-dialog{position:relative;left:50%;top:50%;transform:translate(-50%,-50%);z-index:199995;width:300px;height:200px;background-size:contain;background-color:#fff;font-family:sans-serif,monospace;font-size:20px;border-radius:3px;padding:6px}.a-dialog-text-container{width:100%;height:70%;align-self:flex-start;display:flex;justify-content:center;align-content:center;flex-direction:column}.a-dialog-text{display:inline-block;font-weight:400;font-size:14pt;margin:8px}.a-dialog-buttons-container{display:inline-flex;align-self:flex-end;width:100%;height:30%}.a-dialog-button{cursor:pointer;align-self:center;opacity:.9;height:80%;width:50%;font-size:12pt;margin:4px;border-radius:2px;text-align:center;border:none;display:inline-block;-webkit-transition:all .25s ease-in-out;transition:all .25s ease-in-out;box-shadow:0 1px 3px rgba(0,0,0,.1),0 1px 2px rgba(0,0,0,.2);user-select:none}.a-dialog-permission-button:hover{box-shadow:0 7px 14px rgba(0,0,0,.2),0 2px 2px rgba(0,0,0,.2)}.a-dialog-allow-button{background-color:#00ceff}.a-dialog-deny-button{background-color:#ff005b}.a-dialog-ok-button{background-color:#00ceff;width:100%}.a-dom-overlay:not(.a-no-style){overflow:hidden;position:absolute;pointer-events:none;box-sizing:border-box;bottom:0;left:0;right:0;top:0;padding:1em}.a-dom-overlay:not(.a-no-style)>*{pointer-events:auto}"; (require("browserify-css").createStyle(css, { "href": "src/style/aframe.css"})); module.exports = css;
},{"browserify-css":4}],192:[function(require,module,exports){
var css = ".rs-base{background-color:#333;color:#fafafa;border-radius:0;font:10px monospace;left:5px;line-height:1em;opacity:.85;overflow:hidden;padding:10px;position:fixed;top:5px;width:300px;z-index:10000}.rs-base div.hidden{display:none}.rs-base h1{color:#fff;cursor:pointer;font-size:1.4em;font-weight:300;margin:0 0 5px;padding:0}.rs-group{display:-webkit-box;display:-webkit-flex;display:flex;-webkit-flex-direction:column-reverse;flex-direction:column-reverse;margin-bottom:5px}.rs-group:last-child{margin-bottom:0}.rs-counter-base{align-items:center;display:-webkit-box;display:-webkit-flex;display:flex;height:10px;-webkit-justify-content:space-between;justify-content:space-between;margin:2px 0}.rs-counter-base.alarm{color:#b70000;text-shadow:0 0 0 #b70000,0 0 1px #fff,0 0 1px #fff,0 0 2px #fff,0 0 2px #fff,0 0 3px #fff,0 0 3px #fff,0 0 4px #fff,0 0 4px #fff}.rs-counter-id{font-weight:300;-webkit-box-ordinal-group:0;-webkit-order:0;order:0;width:54px}.rs-counter-value{font-weight:300;-webkit-box-ordinal-group:1;-webkit-order:1;order:1;text-align:right;width:35px}.rs-canvas{-webkit-box-ordinal-group:2;-webkit-order:2;order:2}@media (min-width:480px){.rs-base{left:20px;top:20px}}"; (require("browserify-css").createStyle(css, { "href": "src/style/rStats.css"})); module.exports = css;
},{"browserify-css":4}],193:[function(require,module,exports){
function removeDefaultCamera(e){var t;e.camera&&(t=e.querySelector("["+DEFAULT_CAMERA_ATTR+"]"))&&e.removeChild(t)}var constants=require("../constants/"),registerSystem=require("../core/system").registerSystem,DEFAULT_CAMERA_ATTR="data-aframe-default-camera";module.exports.System=registerSystem("camera",{init:function(){this.activeCameraEl=null,this.render=this.render.bind(this),this.unwrapRender=this.unwrapRender.bind(this),this.wrapRender=this.wrapRender.bind(this),this.initialCameraFound=!1,this.numUserCameras=0,this.numUserCamerasChecked=0,this.setupInitialCamera()},setupInitialCamera:function(){var e,t,a=this.sceneEl,r=this;if(a.camera&&!a.camera.el.getAttribute("camera").spectator)return void a.emit("cameraready",{cameraEl:a.camera.el});if(e=a.querySelectorAll("a-camera, [camera]"),!e.length)return void this.createDefaultCamera();for(this.numUserCameras=e.length,t=0;t<e.length;t++)e[t].addEventListener("object3dset",function(e){"camera"===e.detail.type&&r.checkUserCamera(this)}),e[t].isNode?e[t].load():e[t].addEventListener("nodeready",function(){this.load()})},checkUserCamera:function(e){var t,a=this.el.sceneEl;if(this.numUserCamerasChecked++,!this.initialCameraFound){if(t=e.getAttribute("camera"),!t.active||t.spectator)return void(this.numUserCamerasChecked===this.numUserCameras&&this.createDefaultCamera());this.initialCameraFound=!0,a.camera=e.getObject3D("camera"),a.emit("cameraready",{cameraEl:e})}},createDefaultCamera:function(){var e,t=this.sceneEl;e=document.createElement("a-entity"),e.setAttribute("camera",{active:!0}),e.setAttribute("position",{x:0,y:constants.DEFAULT_CAMERA_HEIGHT,z:0}),e.setAttribute("wasd-controls",""),e.setAttribute("look-controls",""),e.setAttribute(constants.AFRAME_INJECTED,""),e.addEventListener("object3dset",function(a){"camera"===a.detail.type&&(t.camera=a.detail.object,t.emit("cameraready",{cameraEl:e}))}),t.appendChild(e)},disableActiveCamera:function(){var e,t;e=this.sceneEl.querySelectorAll("[camera]"),t=e[e.length-1],t.setAttribute("camera","active",!0)},setActiveCamera:function(e){var t,a,r,i,s=this.activeCameraEl,n=this.sceneEl;if((i=e.getObject3D("camera"))&&e!==this.activeCameraEl){var c=n.querySelector("["+DEFAULT_CAMERA_ATTR+"]"),m=c&&c.querySelector("[camera]");for(e!==m&&removeDefaultCamera(n),this.activeCameraEl=e,this.activeCameraEl.play(),n.camera=i,s&&s.setAttribute("camera","active",!1),a=n.querySelectorAll("[camera]"),r=0;r<a.length;r++)t=a[r],t.isEntity&&e!==t&&(t.setAttribute("camera","active",!1),t.pause());n.emit("camera-set-active",{cameraEl:e})}},setSpectatorCamera:function(e){var t,a,r=this.spectatorCameraEl,i=this.sceneEl;(t=e.getObject3D("camera"))&&e!==this.spectatorCameraEl&&(r&&r.setAttribute("camera","spectator",!1),a=this.spectatorCameraEl=e,i.addEventListener("enter-vr",this.wrapRender),i.addEventListener("exit-vr",this.unwrapRender),a.setAttribute("camera","active",!1),a.play(),i.emit("camera-set-spectator",{cameraEl:e}))},disableSpectatorCamera:function(){this.spectatorCameraEl=void 0},wrapRender:function(){this.spectatorCameraEl&&!this.originalRender&&(this.originalRender=this.sceneEl.renderer.render,this.sceneEl.renderer.render=this.render)},unwrapRender:function(){this.originalRender&&(this.sceneEl.renderer.render=this.originalRender,this.originalRender=void 0)},render:function(e,t){var a,r,i=this.sceneEl;a=i.renderer.xr.enabled,this.originalRender.call(i.renderer,e,t),this.spectatorCameraEl&&!i.isMobile&&a&&(r=this.spectatorCameraEl.components.camera.camera,i.renderer.xr.enabled=!1,this.originalRender.call(i.renderer,e,r),i.renderer.xr.enabled=a)}});
},{"../constants/":127,"../core/system":146}],194:[function(require,module,exports){
function createGeometry(e){var t=e.primitive,r=geometries[t]&&geometries[t].Geometry,i=new r;if(!r)throw new Error("Unknown geometry `"+t+"`");return i.init(e),i.geometry}function decrementCacheCount(e,t){e[t]--}function incrementCacheCount(e,t){e[t]=void 0===e[t]?1:e[t]+1}var geometries=require("../core/geometry").geometries,registerSystem=require("../core/system").registerSystem;module.exports.System=registerSystem("geometry",{init:function(){this.cache={},this.cacheCount={}},clearCache:function(){this.cache={},this.cacheCount={}},getOrCreateGeometry:function(e){var t,r,i=this.cache;return e.skipCache?createGeometry(e):(r=this.hash(e),t=i[r],incrementCacheCount(this.cacheCount,r),t||(t=createGeometry(e),i[r]=t,t))},unuseGeometry:function(e){var t,r,i=this.cache,n=this.cacheCount;e.skipCache||(r=this.hash(e),i[r]&&(decrementCacheCount(n,r),n[r]>0||(t=i[r],t.dispose(),delete i[r],delete n[r])))},hash:function(e){return JSON.stringify(e)}});
},{"../core/geometry":136,"../core/system":146}],195:[function(require,module,exports){
function fetchScript(e){return new Promise(function(t,r){var o=document.createElement("script");document.body.appendChild(o),o.onload=t,o.onerror=r,o.async=!0,o.src=e})}var registerSystem=require("../core/system").registerSystem,THREE=require("../lib/three");module.exports.System=registerSystem("gltf-model",{schema:{dracoDecoderPath:{default:""},meshoptDecoderPath:{default:""}},init:function(){this.update()},update:function(){var e=this.data.dracoDecoderPath,t=this.data.meshoptDecoderPath;!this.dracoLoader&&e&&(this.dracoLoader=new THREE.DRACOLoader,this.dracoLoader.setDecoderPath(e)),!this.meshoptDecoder&&t&&(this.meshoptDecoder=fetchScript(t).then(function(){return window.MeshoptDecoder.ready}).then(function(){return window.MeshoptDecoder}))},getDRACOLoader:function(){return this.dracoLoader},getMeshoptDecoder:function(){return this.meshoptDecoder}});
},{"../core/system":146,"../lib/three":183}],196:[function(require,module,exports){
require("./camera"),require("./geometry"),require("./gltf-model"),require("./light"),require("./material"),require("./renderer"),require("./shadow"),require("./tracked-controls-webvr"),require("./tracked-controls-webxr"),require("./webxr");
},{"./camera":193,"./geometry":194,"./gltf-model":195,"./light":197,"./material":198,"./renderer":199,"./shadow":200,"./tracked-controls-webvr":201,"./tracked-controls-webxr":202,"./webxr":203}],197:[function(require,module,exports){
var registerSystem=require("../core/system").registerSystem,bind=require("../utils/bind"),constants=require("../constants/"),DEFAULT_LIGHT_ATTR="data-aframe-default-light";module.exports.System=registerSystem("light",{schema:{defaultLightsEnabled:{default:!0}},init:function(){this.defaultLights=!1,this.userDefinedLights=!1,this.sceneEl.addEventListener("loaded",bind(this.setupDefaultLights,this))},registerLight:function(t){t.hasAttribute(DEFAULT_LIGHT_ATTR)||(this.removeDefaultLights(),this.userDefinedLights=!0)},removeDefaultLights:function(){var t,e=this.sceneEl;if(this.defaultLights){t=document.querySelectorAll("["+DEFAULT_LIGHT_ATTR+"]");for(var i=0;i<t.length;i++)e.removeChild(t[i]);this.defaultLights=!1}},setupDefaultLights:function(){var t,e,i=this.sceneEl;this.userDefinedLights||this.defaultLights||!this.data.defaultLightsEnabled||(t=document.createElement("a-entity"),t.setAttribute("light",{color:"#BBB",type:"ambient"}),t.setAttribute(DEFAULT_LIGHT_ATTR,""),t.setAttribute(constants.AFRAME_INJECTED,""),i.appendChild(t),e=document.createElement("a-entity"),e.setAttribute("light",{color:"#FFF",intensity:.6,castShadow:!0}),e.setAttribute("position",{x:-.5,y:1,z:1}),e.setAttribute(DEFAULT_LIGHT_ATTR,""),e.setAttribute(constants.AFRAME_INJECTED,""),i.appendChild(e),this.defaultLights=!0)}});
},{"../constants/":127,"../core/system":146,"../utils/bind":204}],198:[function(require,module,exports){
function calculateVideoCacheHash(e,t){var r,i,s,n=t.getAttribute("id");if(n)return n;for(i="",s=e||{},r=0;r<t.attributes.length;r++)s[t.attributes[r].name]=t.attributes[r].value;return Object.keys(s).sort().forEach(function(e){i+=e+":"+s[e]+";"}),i}function loadImageTexture(e,t){function r(r,i){function s(e){setTextureProperties(e,t),e.needsUpdate=!0,r(e)}if("string"!=typeof e)return void s(new THREE.Texture(e));TextureLoader.load(e,s,function(){},function(e){error("`$s` could not be fetched (Error code: %s; Response: %s)",e.status,e.statusText)})}return new Promise(r)}function createVideoEl(e,t,r){var i=document.createElement("video");return i.width=t,i.height=r,i.setAttribute("playsinline",""),i.setAttribute("webkit-playsinline",""),i.autoplay=!0,i.loop=!0,i.crossOrigin="anonymous",i.addEventListener("error",function(){warn("`$s` is not a valid video",e)},!0),i.src=e,i}function fixVideoAttributes(e){return e.autoplay=e.hasAttribute("autoplay")&&"false"!==e.getAttribute("autoplay"),e.controls=e.hasAttribute("controls")&&"false"!==e.getAttribute("controls"),"false"===e.getAttribute("loop")&&e.removeAttribute("loop"),"false"===e.getAttribute("preload")&&(e.preload="none"),e.crossOrigin=e.crossOrigin||"anonymous",e.setAttribute("playsinline",""),e.setAttribute("webkit-playsinline",""),e}var registerSystem=require("../core/system").registerSystem,THREE=require("../lib/three"),utils=require("../utils/"),isHLS=require("../utils/material").isHLS,setTextureProperties=require("../utils/material").setTextureProperties,bind=utils.bind,debug=utils.debug,error=debug("components:texture:error"),TextureLoader=new THREE.TextureLoader,warn=debug("components:texture:warn");TextureLoader.setCrossOrigin("anonymous"),module.exports.System=registerSystem("material",{init:function(){this.materials={},this.textureCounts={},this.textureCache={},this.sceneEl.addEventListener("materialtextureloaded",bind(this.onMaterialTextureLoaded,this))},clearTextureCache:function(){this.textureCache={}},loadTexture:function(e,t,r){function i(e){n.loadImage(e,t,r)}function s(e){n.loadVideo(e,t,r)}var n=this;return"CANVAS"===e.tagName?void this.loadCanvas(e,t,r):"VIDEO"===e.tagName?(e.src||e.srcObject||e.childElementCount||warn("Video element was defined with neither `source` elements nor `src` / `srcObject` attributes."),void this.loadVideo(e,t,r)):void utils.srcLoader.validateSrc(e,i,s)},loadImage:function(e,t,r){var i=this.hash(t),s=this.textureCache;if(s[i])return void s[i].then(r);s[i]=loadImageTexture(e,t),s[i].then(r)},loadCanvas:function(e,t,r){var i;i=new THREE.CanvasTexture(e),setTextureProperties(i,t),r(i)},loadVideo:function(e,t,r){function i(e){e.texture.needsUpdate=!0,r(e.texture,e.videoEl)}var s,n,o,u,a=this.textureCache;if("string"!=typeof e){if(o=e,s=this.hashVideo(t,o),a[s])return void a[s].then(i);fixVideoAttributes(o)}if(o=o||createVideoEl(e,t.width,t.height),s=this.hashVideo(t,o),a[s])return void a[s].then(i);n=new THREE.VideoTexture(o),n.minFilter=THREE.LinearFilter,setTextureProperties(n,t),this.sceneEl.isIOS&&isHLS(o.src||o.getAttribute("src"),o.type||o.getAttribute("type"))&&(n.format=THREE.RGBAFormat,n.needsCorrectionBGRA=!0,n.flipY=!1,n.needsCorrectionFlipY=!0),u={texture:n,videoEl:o},a[s]=Promise.resolve(u),i(u)},hash:function(e){return e.src.tagName&&(e=utils.extendDeep({},e),e.src=e.src.src),JSON.stringify(e)},hashVideo:function(e,t){return calculateVideoCacheHash(e,t)},registerMaterial:function(e){this.materials[e.uuid]=e},unregisterMaterial:function(e){delete this.materials[e.uuid];var t=this.textureCounts;Object.keys(e).filter(function(t){return e[t]&&e[t].isTexture}).forEach(function(r){--t[e[r].uuid]<=0&&e[r].dispose()})},updateMaterials:function(e){var t=this.materials;Object.keys(t).forEach(function(e){t[e].needsUpdate=!0})},onMaterialTextureLoaded:function(e){this.textureCounts[e.detail.texture.uuid]||(this.textureCounts[e.detail.texture.uuid]=0),this.textureCounts[e.detail.texture.uuid]++}});
},{"../core/system":146,"../lib/three":183,"../utils/":210,"../utils/material":214}],199:[function(require,module,exports){
var registerSystem=require("../core/system").registerSystem,utils=require("../utils/"),THREE=require("../lib/three"),debug=utils.debug,warn=debug("components:renderer:warn");module.exports.System=registerSystem("renderer",{schema:{antialias:{default:"auto",oneOf:["true","false","auto"]},highRefreshRate:{default:utils.device.isOculusBrowser()},logarithmicDepthBuffer:{default:"auto",oneOf:["true","false","auto"]},maxCanvasWidth:{default:1920},maxCanvasHeight:{default:1920},physicallyCorrectLights:{default:!1},precision:{default:"high",oneOf:["high","medium","low"]},sortObjects:{default:!1},colorManagement:{default:!1},gammaOutput:{default:!1},alpha:{default:!0},foveationLevel:{default:0}},init:function(){var e=this.data,t=this.el,a=t.renderer;a.sortObjects=e.sortObjects,a.physicallyCorrectLights=e.physicallyCorrectLights,(e.colorManagement||e.gammaOutput)&&(a.outputEncoding=THREE.sRGBEncoding,e.gammaOutput&&warn('Property `gammaOutput` is deprecated. Use `renderer="colorManagement: true;"` instead.')),t.hasAttribute("antialias")&&warn('Component `antialias` is deprecated. Use `renderer="antialias: true"` instead.'),t.hasAttribute("logarithmicDepthBuffer")&&warn('Component `logarithmicDepthBuffer` is deprecated. Use `renderer="logarithmicDepthBuffer: true"` instead.')},applyColorCorrection:function(e){this.data.colorManagement&&e&&(e.isColor?e.convertSRGBToLinear():e.isTexture&&(e.encoding=THREE.sRGBEncoding))}});
},{"../core/system":146,"../lib/three":183,"../utils/":210}],200:[function(require,module,exports){
var registerSystem=require("../core/system").registerSystem,THREE=require("../lib/three"),SHADOW_MAP_TYPE_MAP={basic:THREE.BasicShadowMap,pcf:THREE.PCFShadowMap,pcfsoft:THREE.PCFSoftShadowMap};module.exports.System=registerSystem("shadow",{schema:{enabled:{default:!0},autoUpdate:{default:!0},type:{default:"pcf",oneOf:["basic","pcf","pcfsoft"]}},init:function(){var e=this.sceneEl,a=this.data;this.shadowMapEnabled=!1,e.renderer&&(e.renderer.shadowMap.type=SHADOW_MAP_TYPE_MAP[a.type],e.renderer.shadowMap.autoUpdate=a.autoUpdate,this.setShadowMapEnabled(this.shadowMapEnabled))},update:function(e){e.enabled!==this.data.enabled&&this.setShadowMapEnabled(this.data.enabled)},setShadowMapEnabled:function(e){var a=this.sceneEl.renderer;this.shadowMapEnabled=this.data.enabled&&e,a&&(a.shadowMap.enabled=this.shadowMapEnabled)}});
},{"../core/system":146,"../lib/three":183}],201:[function(require,module,exports){
var registerSystem=require("../core/system").registerSystem,utils=require("../utils"),isWebXRAvailable=utils.device.isWebXRAvailable;module.exports.System=registerSystem("tracked-controls-webvr",{init:function(){var t=this;this.controllers=[],this.isChrome=-1!==navigator.userAgent.indexOf("Chrome"),this.updateControllerList(),this.throttledUpdateControllerList=utils.throttle(this.updateControllerList,500,this),isWebXRAvailable||navigator.getVRDisplays&&this.sceneEl.addEventListener("enter-vr",function(){navigator.getVRDisplays().then(function(e){e.length&&(t.vrDisplay=e[0])})})},tick:function(){this.isChrome?this.updateControllerList():this.throttledUpdateControllerList()},updateControllerList:function(){var t,e,i,s,r=this.controllers;if(e=navigator.getGamepads&&navigator.getGamepads()){for(s=r.length,r.length=0,i=0;i<e.length;++i)(t=e[i])&&t.pose&&r.push(t);r.length!==s&&this.el.emit("controllersupdated",void 0,!1)}}});
},{"../core/system":146,"../utils":210}],202:[function(require,module,exports){
var registerSystem=require("../core/system").registerSystem,utils=require("../utils");module.exports.System=registerSystem("tracked-controls-webxr",{init:function(){this.controllers=[],this.oldControllers=[],this.oldControllersLength=0,this.throttledUpdateControllerList=utils.throttle(this.updateControllerList,500,this),this.updateReferenceSpace=this.updateReferenceSpace.bind(this),this.el.addEventListener("enter-vr",this.updateReferenceSpace),this.el.addEventListener("exit-vr",this.updateReferenceSpace)},tick:function(){this.throttledUpdateControllerList()},updateReferenceSpace:function(){var e=this,t=this.el.xrSession;if(!t)return this.referenceSpace=void 0,this.controllers=[],void(this.oldControllersLength>0&&(this.oldControllersLength=0,this.el.emit("controllersupdated",void 0,!1)));var r=e.el.sceneEl.systems.webxr.sessionReferenceSpaceType;t.requestReferenceSpace(r).then(function(t){e.referenceSpace=t}).catch(function(t){throw e.el.sceneEl.systems.webxr.warnIfFeatureNotRequested(r,'tracked-controls-webxr uses reference space "'+r+'".'),t})},updateControllerList:function(){var e,t=this.el.xrSession,r=this.oldControllers;if(!t){if(0===this.oldControllersLength)return;return this.oldControllersLength=0,this.controllers=[],void this.el.emit("controllersupdated",void 0,!1)}if(t.inputSources){if(this.controllers=t.inputSources,this.oldControllersLength===this.controllers.length){var s=!0;for(e=0;e<this.controllers.length;++e)if(this.controllers[e]!==r[e]||this.controllers[e].gamepad!==r[e].gamepad){s=!1;break}if(s)return}for(r.length=0,e=0;e<this.controllers.length;e++)r.push(this.controllers[e]);this.oldControllersLength=this.controllers.length,this.el.emit("controllersupdated",void 0,!1)}}});
},{"../core/system":146,"../utils":210}],203:[function(require,module,exports){
var registerSystem=require("../core/system").registerSystem,utils=require("../utils/"),warn=utils.debug("systems:webxr:warn");module.exports.System=registerSystem("webxr",{schema:{referenceSpaceType:{type:"string",default:"local-floor"},requiredFeatures:{type:"array",default:["local-floor"]},optionalFeatures:{type:"array",default:["bounded-floor"]},overlayElement:{type:"selector"}},update:function(){var e=this.data;this.sessionConfiguration={requiredFeatures:e.requiredFeatures,optionalFeatures:e.optionalFeatures},this.sessionReferenceSpaceType=e.referenceSpaceType,e.overlayElement&&(e.overlayElement.classList.remove("a-dom-overlay"),e.optionalFeatures.includes("dom-overlay")||(e.optionalFeatures.push("dom-overlay"),this.el.setAttribute("webxr",e)),this.warnIfFeatureNotRequested("dom-overlay"),this.sessionConfiguration.domOverlay={root:e.overlayElement},e.overlayElement.classList.add("a-dom-overlay"))},wasFeatureRequested:function(e){return"viewer"===e||"local"===e||!(!this.sessionConfiguration.requiredFeatures.includes(e)&&!this.sessionConfiguration.optionalFeatures.includes(e))},warnIfFeatureNotRequested:function(e,t){if(!this.wasFeatureRequested(e)){var r='Please add the feature "'+e+"\" to a-scene's webxr system options in requiredFeatures/optionalFeatures.";warn((t?t+" ":"")+r)}}});
},{"../core/system":146,"../utils/":210}],204:[function(require,module,exports){
module.exports=function(r,t){return function(n){return function(){var o=n.concat(Array.prototype.slice.call(arguments,0));return r.apply(t,o)}}(Array.prototype.slice.call(arguments,2))};
},{}],205:[function(require,module,exports){
function parse(e,r){var t,i,n,o,s,u,d,a,l;if(e&&e instanceof Object)return u=void 0===e.x?r&&r.x:e.x,d=void 0===e.y?r&&r.y:e.y,a=void 0===e.z?r&&r.z:e.z,l=void 0===e.w?r&&r.w:e.w,void 0!==u&&null!==u&&(e.x=parseIfString(u)),void 0!==d&&null!==d&&(e.y=parseIfString(d)),void 0!==a&&null!==a&&(e.z=parseIfString(a)),void 0!==l&&null!==l&&(e.w=parseIfString(l)),e;if(null===e||void 0===e)return typeof r===OBJECT?extend({},r):r;for(t=e.trim().split(whitespaceRegex),s={},o=0;o<COORDINATE_KEYS.length;o++)if(n=COORDINATE_KEYS[o],t[o])s[n]=parseFloat(t[o],10);else{if(void 0===(i=r&&r[n]))continue;s[n]=parseIfString(i)}return s}function stringify(e){var r;return typeof e!==OBJECT?e:(r=e.x+" "+e.y,null!=e.z&&(r+=" "+e.z),null!=e.w&&(r+=" "+e.w),r)}function isCoordinates(e){return regex.test(e)}function parseIfString(e){return null!==e&&void 0!==e&&e.constructor===String?parseFloat(e,10):e}var debug=require("./debug"),extend=require("object-assign"),warn=debug("utils:coordinates:warn"),COORDINATE_KEYS=["x","y","z","w"],regex=/^\s*((-?\d*\.{0,1}\d+(e-?\d+)?)\s+){2,3}(-?\d*\.{0,1}\d+(e-?\d+)?)\s*$/;module.exports.regex=regex;var OBJECT="object",whitespaceRegex=/\s+/g;module.exports.parse=parse,module.exports.stringify=stringify,module.exports.isCoordinates=isCoordinates,module.exports.isCoordinate=function(e){return warn("`AFRAME.utils.isCoordinate` has been renamed to `AFRAME.utils.isCoordinates`"),isCoordinates(e)},module.exports.toVector3=function(e){return new THREE.Vector3(e.x,e.y,e.z)};
},{"./debug":206,"object-assign":39}],206:[function(require,module,exports){
(function (process){
function getDebugNamespaceType(e){var r=e.split(":");return r[r.length-1]}function getDebugNamespaceColor(e){var r=getDebugNamespaceType(e);return settings.colors&&settings.colors[r]||null}function storage(){try{return window.localStorage}catch(e){}}var debugLib=require("debug"),extend=require("object-assign"),settings={colors:{debug:"gray",error:"red",info:"gray",warn:"orange"}},debug=function(e){var r=debugLib(e);return r.color=getDebugNamespaceColor(e),r};extend(debug,debugLib);var ls=storage();ls&&(parseInt(ls.logs,10)||"true"===ls.logs)?debug.enable("*"):debug.enable("*:error,*:info,*:warn"),process.browser&&(window.logs=debug),module.exports=debug;
}).call(this,require('_process'))

},{"_process":49,"debug":8,"object-assign":39}],207:[function(require,module,exports){
(function (process){
function getVRDisplay(){return vrDisplay}function checkHeadsetConnected(){return supportsVRSession||supportsARSession||!!getVRDisplay()}function checkARSupport(){return supportsARSession}function isTablet(e){return/ipad|Nexus (7|9)|xoom|sch-i800|playbook|tablet|kindle/i.test(e||window.navigator.userAgent)}function isIOS(){return/iPad|iPhone|iPod/.test(window.navigator.platform)}function isMobileDeviceRequestingDesktopSite(){return!isMobile()&&!isMobileVR()&&void 0!==window.orientation}function isOculusBrowser(){return/(OculusBrowser)/i.test(window.navigator.userAgent)}function isFirefoxReality(){return/(Mobile VR)/i.test(window.navigator.userAgent)}function isMobileVR(){return isOculusBrowser()||isFirefoxReality()}function isR7(){return/R7 Build/.test(window.navigator.userAgent)}var error=require("debug")("device:error"),vrDisplay,supportsVRSession=!1,supportsARSession=!1,isWebXRAvailable=module.exports.isWebXRAvailable=!window.debug&&void 0!==navigator.xr;if(window.addEventListener("vrdisplayactivate",function(e){var i;isWebXRAvailable||(i=document.createElement("canvas"),vrDisplay=e.display,i.getContext("webgl",{}),vrDisplay.requestPresent([{source:i}]).then(function(){},function(){}))}),isWebXRAvailable){var updateEnterInterfaces=function(){var e=document.querySelector("a-scene");if(!e)return void window.addEventListener("DOMContentLoaded",updateEnterInterfaces);e.hasLoaded?e.components["vr-mode-ui"].updateEnterInterfaces():e.addEventListener("loaded",updateEnterInterfaces)},errorHandler=function(e){error("WebXR session support error: "+e.message)};navigator.xr.isSessionSupported?(navigator.xr.isSessionSupported("immersive-vr").then(function(e){supportsVRSession=e,updateEnterInterfaces()}).catch(errorHandler),navigator.xr.isSessionSupported("immersive-ar").then(function(e){supportsARSession=e,updateEnterInterfaces()}).catch(function(){})):navigator.xr.supportsSession?(navigator.xr.supportsSession("immersive-vr").then(function(){supportsVRSession=!0,updateEnterInterfaces()}).catch(errorHandler),navigator.xr.supportsSession("immersive-ar").then(function(){supportsARSession=!0,updateEnterInterfaces()}).catch(function(){})):error("WebXR has neither isSessionSupported or supportsSession?!")}else navigator.getVRDisplays&&navigator.getVRDisplays().then(function(e){var i=document.querySelector("a-scene");vrDisplay=e.length&&e[0],i&&i.emit("displayconnected",{vrDisplay:vrDisplay})});module.exports.getVRDisplay=getVRDisplay,module.exports.checkHeadsetConnected=checkHeadsetConnected,module.exports.checkARSupport=checkARSupport;var isMobile=function(){var e=!1;return function(i){(/(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows ce|xda|xiino/i.test(i)||/1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-/i.test(i.substr(0,4)))&&(e=!0),(isIOS()||isTablet()||isR7())&&(e=!0),isMobileVR()&&(e=!1)}(window.navigator.userAgent||window.navigator.vendor||window.opera),function(){return e}}();module.exports.isMobile=isMobile,module.exports.isTablet=isTablet,module.exports.isIOS=isIOS,module.exports.isMobileDeviceRequestingDesktopSite=isMobileDeviceRequestingDesktopSite,module.exports.isOculusBrowser=isOculusBrowser,module.exports.isFirefoxReality=isFirefoxReality,module.exports.isMobileVR=isMobileVR,module.exports.isR7=isR7,module.exports.isLandscape=function(){var e=window.orientation;return isR7()&&(e+=90),90===e||-90===e},module.exports.isBrowserEnvironment=!(process&&!process.browser),module.exports.isNodeEnvironment=!module.exports.isBrowserEnvironment;
}).call(this,require('_process'))

},{"_process":49,"debug":8}],208:[function(require,module,exports){
function getComponentPropertyPath(t,e){return e=e||".",propertyPathCache[e]||(propertyPathCache[e]={}),-1!==t.indexOf(e)?propertyPathCache[e][t]=t.split(e):propertyPathCache[e][t]=t,propertyPathCache[e][t]}var propertyPathCache={};module.exports.getComponentPropertyPath=getComponentPropertyPath,module.exports.propertyPathCache=propertyPathCache,module.exports.getComponentProperty=function(t,e,r){var o;return r=r||".",-1!==e.indexOf(r)?(o=getComponentPropertyPath(e,r),o.constructor===String?t.getAttribute(o):t.getAttribute(o[0])[o[1]]):t.getAttribute(e)},module.exports.setComponentProperty=function(t,e,r,o){var p;if(o=o||".",-1!==e.indexOf(o))return p=getComponentPropertyPath(e,o),void(p.constructor===String?t.setAttribute(p,r):t.setAttribute(p[0],p[1],r));t.setAttribute(e,r)};
},{}],209:[function(require,module,exports){
module.exports=function(t){var e=t.style.width,s=t.style.height;t.style.width=parseInt(e,10)+1+"px",t.style.height=parseInt(s,10)+1+"px",setTimeout(function(){t.style.width=e,t.style.height=s},200)};
},{}],210:[function(require,module,exports){
var debug=require("./debug"),deepAssign=require("deep-assign"),device=require("./device"),objectAssign=require("object-assign"),objectPool=require("./object-pool"),warn=debug("utils:warn");module.exports.bind=require("./bind"),module.exports.coordinates=require("./coordinates"),module.exports.debug=debug,module.exports.device=device,module.exports.entity=require("./entity"),module.exports.forceCanvasResizeSafariMobile=require("./forceCanvasResizeSafariMobile"),module.exports.isIE11=require("./is-ie11"),module.exports.material=require("./material"),module.exports.objectPool=objectPool,module.exports.split=require("./split").split,module.exports.styleParser=require("./styleParser"),module.exports.trackedControls=require("./tracked-controls"),module.exports.checkHeadsetConnected=function(){return warn("`utils.checkHeadsetConnected` has moved to `utils.device.checkHeadsetConnected`"),device.checkHeadsetConnected(arguments)},module.exports.isGearVR=module.exports.device.isGearVR=function(){warn("`utils.isGearVR` has been deprecated, use `utils.device.isMobileVR`")},module.exports.isIOS=function(){return warn("`utils.isIOS` has moved to `utils.device.isIOS`"),device.isIOS(arguments)},module.exports.isOculusGo=module.exports.device.isOculusGo=function(){warn("`utils.isOculusGo` has been deprecated, use `utils.device.isMobileVR`")},module.exports.isMobile=function(){return warn("`utils.isMobile has moved to `utils.device.isMobile`"),device.isMobile(arguments)},module.exports.throttle=function(e,r,t){var o;return t&&(e=module.exports.bind(e,t)),function(){var t=Date.now(),i=void 0===o?r:t-o;(void 0===o||i>=r)&&(o=t,e.apply(null,arguments))}},module.exports.throttleTick=function(e,r,t){var o;return t&&(e=module.exports.bind(e,t)),function(t,i){var n=void 0===o?i:t-o;(void 0===o||n>=r)&&(o=t,e(t,n))}},module.exports.debounce=function(e,r,t){var o;return function(){var i=this,n=arguments,u=function(){o=null,t||e.apply(i,n)},s=t&&!o;clearTimeout(o),o=setTimeout(u,r),s&&e.apply(i,n)}},module.exports.extend=objectAssign,module.exports.extendDeep=deepAssign,module.exports.clone=function(e){return JSON.parse(JSON.stringify(e))};var deepEqual=function(){var e=objectPool.createPool(function(){return[]});return function(r,t){var o,i,n,u,s,c;if(void 0===r||void 0===t||null===r||null===t||!(r&&t&&r.constructor===Object&&t.constructor===Object||r.constructor===Array&&t.constructor===Array))return r===t;i=e.use(),n=e.use(),i.length=0,n.length=0;for(o in r)i.push(o);for(o in t)n.push(o);if(i.length!==n.length)return e.recycle(i),e.recycle(n),!1;for(u=0;u<i.length;++u)if(s=r[i[u]],c=t[i[u]],"object"==typeof s||"object"==typeof c||Array.isArray(s)&&Array.isArray(c)){if(s===c)continue;if(!deepEqual(s,c))return e.recycle(i),e.recycle(n),!1}else if(s!==c)return e.recycle(i),e.recycle(n),!1;return e.recycle(i),e.recycle(n),!0}}();module.exports.deepEqual=deepEqual,module.exports.diff=function(){var e=[];return function(r,t,o){var i,n,u,s,c,l,d;s=o||{},e.length=0;for(c in r)e.push(c);if(!t)return s;for(u in t)-1===e.indexOf(u)&&e.push(u);for(l=0;l<e.length;l++)c=e[l],i=r[c],n=t[c],((d=i&&n&&i.constructor===Object&&n.constructor===Object)&&!deepEqual(i,n)||!d&&i!==n)&&(s[c]=n);return s}}(),module.exports.shouldCaptureKeyEvent=function(e){return!e.metaKey&&document.activeElement===document.body},module.exports.splitString=function(e,r){void 0===r&&(r=" ");var t=new RegExp(r,"g");return e=(e||"").replace(t,r),e.split(r)},module.exports.getElData=function(e,r){function t(r){e.hasAttribute(r)&&(o[r]=e.getAttribute(r))}r=r||{};var o={};return Object.keys(r).forEach(t),o},module.exports.getUrlParameter=function(e){e=e.replace(/[\[]/,"\\[").replace(/[\]]/,"\\]");var r=new RegExp("[\\?&]"+e+"=([^&#]*)"),t=r.exec(location.search);return null===t?"":decodeURIComponent(t[1].replace(/\+/g," "))},module.exports.isIframed=function(){return window.top!==window.self},module.exports.findAllScenes=function(e){for(var r=[],t=e.getElementsByTagName("*"),o=0,i=t.length;o<i;o++)t[o].isScene&&r.push(t[o]);return r},module.exports.srcLoader=require("./src-loader");
},{"./bind":204,"./coordinates":205,"./debug":206,"./device":207,"./entity":208,"./forceCanvasResizeSafariMobile":209,"./is-ie11":212,"./material":214,"./object-pool":215,"./split":216,"./src-loader":217,"./styleParser":218,"./tracked-controls":219,"deep-assign":10,"object-assign":39}],211:[function(require,module,exports){
// Safari regression introduced in iOS 12 and remains in iOS 13.
// https://stackoverflow.com/questions/62717621/white-space-at-page-bottom-after-device-rotation-in-ios-safari
window.addEventListener('orientationchange', function () {
  document.documentElement.style.height = `initial`;
  setTimeout(function () {
    document.documentElement.style.height = `100%`;
    setTimeout(function () {
      // this line prevents the content
      // from hiding behind the address bar
      window.scrollTo(0, 1);
    }, 500);
  }, 500);
});

},{}],212:[function(require,module,exports){
function getInternetExplorerVersion(){var e,r=-1,n=navigator.userAgent;return"Microsoft Internet Explorer"===navigator.appName?(e=new RegExp("MSIE ([0-9]{1,}[\\.0-9]{0,})"),null!=e.exec(n)&&(r=parseFloat(RegExp.$1))):"Netscape"===navigator.appName&&(e=new RegExp("Trident/.*rv:([0-9]{1,}[\\.0-9]{0,})"),null!=e.exec(n)&&(r=parseFloat(RegExp.$1))),r}module.exports=11===getInternetExplorerVersion();
},{}],213:[function(require,module,exports){
module.exports=function(o){return/(iphone|ipod|ipad).*os.(7_|8_|9_)/i.test(o)};
},{}],214:[function(require,module,exports){
function setTextureProperties(e,t){var r=t.offset||{x:0,y:0},a=t.repeat||{x:1,y:1};(t.npot||!1)&&(e.wrapS=THREE.ClampToEdgeWrapping,e.wrapT=THREE.ClampToEdgeWrapping,e.magFilter=THREE.LinearFilter,e.minFilter=THREE.LinearFilter),1===a.x&&1===a.y||(e.wrapS=THREE.RepeatWrapping,e.wrapT=THREE.RepeatWrapping,e.repeat.set(a.x,a.y)),0===r.x&&0===r.y||e.offset.set(r.x,r.y)}function handleTextureEvents(e,t){t&&(e.emit("materialtextureloaded",{src:t.image,texture:t}),t.image&&"VIDEO"===t.image.tagName&&(t.image.addEventListener("loadeddata",function(){e.components&&e.components.material&&(t.needsCorrectionBGRA&&t.needsCorrectionFlipY&&-1!==["standard","flat"].indexOf(e.components.material.data.shader)&&e.setAttribute("material","shader","ios10hls"),e.emit("materialvideoloadeddata",{src:t.image,texture:t}))}),t.image.addEventListener("ended",function(){e.emit("materialvideoended",{src:t.image,texture:t})})))}var THREE=require("../lib/three"),HLS_MIMETYPES=["application/x-mpegurl","application/vnd.apple.mpegurl"],COLOR_MAPS=new Set(["emissiveMap","envMap","map","specularMap"]);module.exports.setTextureProperties=setTextureProperties,module.exports.updateMapMaterialFromData=function(e,t,r,a){function n(t){r.materialSrcs[e]===l&&i(t)}function i(t){o[e]=t,t&&COLOR_MAPS.has(e)&&p.applyColorCorrection(t),o.needsUpdate=!0,handleTextureEvents(s,t)}var s=r.el,o=r.material,p=s.sceneEl.systems.renderer,l=a[t];if(r.materialSrcs||(r.materialSrcs={}),!l)return delete r.materialSrcs[e],void i(null);l!==r.materialSrcs[e]&&(r.materialSrcs[e]=l,l instanceof THREE.Texture?i(l):s.sceneEl.systems.material.loadTexture(l,{src:l,repeat:a.repeat,offset:a.offset,npot:a.npot},n))},module.exports.updateMap=function(e,t){return module.exports.updateMapMaterialFromData("map","src",e,t)},module.exports.updateDistortionMap=function(e,t,r){function a(e){var t=n+"Map";s[t]=e,e&&COLOR_MAPS.has(t)&&o.applyColorCorrection(e),e&&setTextureProperties(e,r),s.needsUpdate=!0,handleTextureEvents(i,e)}var n=e;"ambientOcclusion"===e&&(n="ao");var i=t.el,s=t.material,o=i.sceneEl.systems.renderer,p=r[e+"Map"],l={};if(l.src=p,l.offset=r[e+"TextureOffset"],l.repeat=r[e+"TextureRepeat"],l.wrap=r[e+"TextureWrap"],p){if(p===t[e+"TextureSrc"])return;return t[e+"TextureSrc"]=p,void i.sceneEl.systems.material.loadTexture(p,l,a)}s.map&&a(null)},module.exports.handleTextureEvents=handleTextureEvents,module.exports.isHLS=function(e,t){return!(!t||!HLS_MIMETYPES.includes(t.toLowerCase()))||!!(e&&e.toLowerCase().indexOf(".m3u8")>0)};
},{"../lib/three":183}],215:[function(require,module,exports){
function defaultObjectFactory(){return{}}function clearObject(e){var t;if(e&&e.constructor===Object)for(t in e)e[t]=void 0}function removeUnusedKeys(e,t){var n;if(e&&e.constructor===Object)for(n in e)n in t||delete e[n]}var EMPTY_SLOT=Object.freeze(Object.create(null));module.exports.createPool=function(e){function t(){var e;return null!==l&&l!==c.length||r(c.length||5),e=c[l],c[l++]=EMPTY_SLOT,clearObject(e),e}function n(e){if(e instanceof Object)return null===l||-1===l?void(c[c.length]=e):void(c[--l]=e)}function r(t){var n,r;if(t=void 0===t?c.length:t,t>0&&null==l&&(l=0),t>0)for(n=c.length,c.length+=Number(t),r=n;r<c.length;r++)c[r]=e();return c.length}function o(){return c.length}var c=[],l=null;return e=e||defaultObjectFactory,{grow:r,pool:c,recycle:n,size:o,use:t}},module.exports.clearObject=clearObject,module.exports.removeUnusedKeys=removeUnusedKeys;
},{}],216:[function(require,module,exports){
module.exports.split=function(){var n={};return function(t,i){return i in n||(n[i]={}),t in n[i]?n[i][t]:(n[i][t]=t.split(i),n[i][t])}}();
},{}],217:[function(require,module,exports){
function validateSrc(e,a,t){checkIsImage(e,function(r){if(r)return void a(e);t(e)})}function validateCubemapSrc(e,a){function t(e){o.push(e),6===o.length&&a(o)}var r,n,c,s="",o=[];for(n=0;n<5;n++)s+="(url\\((?:[^\\)]+)\\),\\s*)";if(s+="(url\\((?:[^\\)]+)\\)\\s*)",c=e.match(new RegExp(s)))for(n=1;n<7;n++)validateSrc(parseUrl(c[n]),t);else if(r=validateAndGetQuerySelector(e))return"A-CUBEMAP"===r.tagName&&r.srcs?a(r.srcs):void warn('Selector "%s" does not point to <a-cubemap>',e)}function parseUrl(e){var a=e.match(/\url\((.+)\)/);if(a)return a[1]}function checkIsImage(e,a){var t;if(e.tagName)return void a("IMG"===e.tagName);t=new XMLHttpRequest,t.open("HEAD",e),t.addEventListener("load",function(r){var n;t.status>=200&&t.status<300?(n=t.getResponseHeader("Content-Type"),null==n?checkIsImageFallback(e,a):a(n.startsWith("image")?!0:!1)):checkIsImageFallback(e,a),t.abort()}),t.send()}function checkIsImageFallback(e,a){function t(){a(!0)}function r(){a(!1)}var n=new Image;n.addEventListener("load",t),n.addEventListener("error",r),n.src=e}function validateAndGetQuerySelector(e){try{var a=document.querySelector(e);return a||warn('No element was found matching the selector: "%s"',e),a}catch(a){return void warn('"%s" is not a valid selector',e)}}var debug=require("./debug"),warn=debug("utils:src-loader:warn");module.exports={parseUrl:parseUrl,validateSrc:validateSrc,validateCubemapSrc:validateCubemapSrc};
},{"./debug":206}],218:[function(require,module,exports){
function toCamelCase(e){return e.replace(DASH_REGEX,upperCase)}function transformKeysToCamelCase(e){var r,t;for(t in e)r=toCamelCase(t),t!==r&&(e[r]=e[t],delete e[t]);return e}function styleParse(e,r){var t,n,s,a,o,u;for(r=r||{},t=getKeyValueChunks(e),n=0;n<t.length;n++)(s=t[n])&&(a=s.indexOf(":"),o=s.substr(0,a).trim(),u=s.substr(a+1).trim(),r[o]=u);return r}function styleStringify(e){var r,t=0,n=0,s="";for(r in e)t++;for(r in e)s+=r+": "+e[r],n<t-1&&(s+="; "),n++;return s}function upperCase(e){return e[1].toUpperCase()}var DASH_REGEX=/-([a-z])/g;module.exports.parse=function(e,r){var t;return"string"!=typeof e?e:(t=styleParse(e,r),t[""]?e:transformKeysToCamelCase(t))},module.exports.stringify=function(e){return"string"==typeof e?e:styleStringify(e)},module.exports.toCamelCase=toCamelCase,module.exports.transformKeysToCamelCase=transformKeysToCamelCase;var getKeyValueChunks=function(){var e=[],r=/url\([^)]+$/;return function(t){var n,s="",a=0;for(e.length=0;a<t.length;)n=t.indexOf(";",a),-1===n&&(n=t.length),s+=t.substring(a,n),r.test(s)?(s+=";",a=n+1):(e.push(s.trim()),s="",a=n+1);return e}}();
},{}],219:[function(require,module,exports){
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var Util={};Util.base64=function(e,i){return"data:"+e+";base64,"+i},Util.isMobile=function(){var e=!1;return function(i){(/(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows ce|xda|xiino/i.test(i)||/1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-/i.test(i.substr(0,4)))&&(e=!0)}(navigator.userAgent||navigator.vendor||window.opera),e},Util.isIOS=function(){return/(iPad|iPhone|iPod)/g.test(navigator.userAgent)},Util.isIFrame=function(){try{return window.self!==window.top}catch(e){return!0}},Util.appendQueryParameter=function(e,i,t){return e+=(e.indexOf("?")<0?"?":"&")+i+"="+t},Util.getQueryParameter=function(e){e=e.replace(/[\[]/,"\\[").replace(/[\]]/,"\\]");var i=new RegExp("[\\?&]"+e+"=([^&#]*)"),t=i.exec(location.search);return null===t?"":decodeURIComponent(t[1].replace(/\+/g," "))},Util.isLandscapeMode=function(){return 90==window.orientation||-90==window.orientation},module.exports=Util;
},{}],225:[function(require,module,exports){
function AndroidWakeLock(){var A=document.createElement("video");A.addEventListener("ended",function(){A.play()}),this.request=function(){A.paused&&(A.src=Util.base64("video/webm","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"),A.play())},this.release=function(){A.pause(),A.src=""}}function iOSWakeLock(){var A=null;this.request=function(){A||(A=setInterval(function(){window.location.href="/",setTimeout(window.stop,0)},15e3))},this.release=function(){A&&(clearInterval(A),A=null)}}function getWakeLock(){var A=navigator.userAgent||navigator.vendor||window.opera;return A.match(/iPhone/i)||A.match(/iPod/i)?iOSWakeLock:AndroidWakeLock}var Util=require("./util.js");module.exports=getWakeLock();
},{"./util.js":224}]},{},[181])(181)
});


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