/**
 * @author arodic / https://github.com/arodic
 */

( function () {

	'use strict';

	var GizmoMaterial = function ( parameters ) {

		THREE.MeshBasicMaterial.call( this );

		this.depthTest = false;
		this.depthWrite = false;
		this.side = THREE.FrontSide;
		this.transparent = true;

		this.setValues( parameters );

		this.oldColor = this.color.clone();
		this.oldOpacity = this.opacity;

		this.highlight = function( highlighted ) {

			if ( highlighted ) {

				this.color.setRGB( 1, 1, 0 );
				this.opacity = 1;

			} else {

				this.color.copy( this.oldColor );
				this.opacity = this.oldOpacity;

			}

		};

	};

	GizmoMaterial.prototype = Object.create( THREE.MeshBasicMaterial.prototype );
	GizmoMaterial.prototype.constructor = GizmoMaterial;


	var GizmoLineMaterial = function ( parameters ) {

		THREE.LineBasicMaterial.call( this );

		this.depthTest = false;
		this.depthWrite = false;
		this.transparent = true;
		this.linewidth = 1;

		this.setValues( parameters );

		this.oldColor = this.color.clone();
		this.oldOpacity = this.opacity;

		this.highlight = function( highlighted ) {

			if ( highlighted ) {

				this.color.setRGB( 1, 1, 0 );
				this.opacity = 1;

			} else {

				this.color.copy( this.oldColor );
				this.opacity = this.oldOpacity;

			}

		};

	};

	GizmoLineMaterial.prototype = Object.create( THREE.LineBasicMaterial.prototype );
	GizmoLineMaterial.prototype.constructor = GizmoLineMaterial;


	var pickerMaterial = new GizmoMaterial( { visible: false, transparent: false } );


	THREE.TransformGizmo = function () {

		this.init = function () {

			THREE.Object3D.call( this );

			this.handles = new THREE.Object3D();
			this.pickers = new THREE.Object3D();
			this.planes = new THREE.Object3D();

			this.add( this.handles );
			this.add( this.pickers );
			this.add( this.planes );

			//// PLANES

			var planeGeometry = new THREE.PlaneBufferGeometry( 50, 50, 2, 2 );
			var planeMaterial = new THREE.MeshBasicMaterial( { visible: false, side: THREE.DoubleSide } );

			var planes = {
				"XY":   new THREE.Mesh( planeGeometry, planeMaterial ),
				"YZ":   new THREE.Mesh( planeGeometry, planeMaterial ),
				"XZ":   new THREE.Mesh( planeGeometry, planeMaterial ),
				"XYZE": new THREE.Mesh( planeGeometry, planeMaterial )
			};

			this.activePlane = planes[ "XYZE" ];

			planes[ "YZ" ].rotation.set( 0, Math.PI / 2, 0 );
			planes[ "XZ" ].rotation.set( - Math.PI / 2, 0, 0 );

			for ( var i in planes ) {

				planes[ i ].name = i;
				this.planes.add( planes[ i ] );
				this.planes[ i ] = planes[ i ];

			}

			//// HANDLES AND PICKERS

			var setupGizmos = function( gizmoMap, parent ) {

				for ( var name in gizmoMap ) {

					for ( i = gizmoMap[ name ].length; i --; ) {

						var object = gizmoMap[ name ][ i ][ 0 ];
						var position = gizmoMap[ name ][ i ][ 1 ];
						var rotation = gizmoMap[ name ][ i ][ 2 ];

						object.name = name;

						if ( position ) object.position.set( position[ 0 ], position[ 1 ], position[ 2 ] );
						if ( rotation ) object.rotation.set( rotation[ 0 ], rotation[ 1 ], rotation[ 2 ] );

						parent.add( object );

					}

				}

			};

			setupGizmos( this.handleGizmos, this.handles );
			setupGizmos( this.pickerGizmos, this.pickers );

			// reset Transformations

			this.traverse( function ( child ) {

				if ( child instanceof THREE.Mesh ) {

					child.updateMatrix();

					var tempGeometry = child.geometry.clone();
					tempGeometry.applyMatrix( child.matrix );
					child.geometry = tempGeometry;

					child.position.set( 0, 0, 0 );
					child.rotation.set( 0, 0, 0 );
					child.scale.set( 1, 1, 1 );

				}

			} );

		};

		this.highlight = function ( axis ) {

			this.traverse( function( child ) {

				if ( child.material && child.material.highlight ) {

					if ( child.name === axis ) {

						child.material.highlight( true );

					} else {

						child.material.highlight( false );

					}

				}

			} );

		};

	};

	THREE.TransformGizmo.prototype = Object.create( THREE.Object3D.prototype );
	THREE.TransformGizmo.prototype.constructor = THREE.TransformGizmo;

	THREE.TransformGizmo.prototype.update = function ( rotation, eye ) {

		var vec1 = new THREE.Vector3( 0, 0, 0 );
		var vec2 = new THREE.Vector3( 0, 1, 0 );
		var lookAtMatrix = new THREE.Matrix4();

		this.traverse( function( child ) {

			if ( child.name.search( "E" ) !== - 1 ) {

				child.quaternion.setFromRotationMatrix( lookAtMatrix.lookAt( eye, vec1, vec2 ) );

			} else if ( child.name.search( "X" ) !== - 1 || child.name.search( "Y" ) !== - 1 || child.name.search( "Z" ) !== - 1 ) {

				child.quaternion.setFromEuler( rotation );

			}

		} );

	};

	THREE.TransformGizmoTranslate = function () {

		THREE.TransformGizmo.call( this );

		var arrowGeometry = new THREE.Geometry();
		var mesh = new THREE.Mesh( new THREE.CylinderGeometry( 0, 0.05, 0.2, 12, 1, false ) );
		mesh.position.y = 0.5;
		mesh.updateMatrix();

		arrowGeometry.merge( mesh.geometry, mesh.matrix );

		var lineXGeometry = new THREE.BufferGeometry();
		lineXGeometry.addAttribute( 'position', new THREE.Float32BufferAttribute( [ 0, 0, 0,  1, 0, 0 ], 3 ) );

		var lineYGeometry = new THREE.BufferGeometry();
		lineYGeometry.addAttribute( 'position', new THREE.Float32BufferAttribute( [ 0, 0, 0,  0, 1, 0 ], 3 ) );

		var lineZGeometry = new THREE.BufferGeometry();
		lineZGeometry.addAttribute( 'position', new THREE.Float32BufferAttribute( [ 0, 0, 0,  0, 0, 1 ], 3 ) );

		this.handleGizmos = {

			X: [
				[ new THREE.Mesh( arrowGeometry, new GizmoMaterial( { color: 0xff0000 } ) ), [ 0.5, 0, 0 ], [ 0, 0, - Math.PI / 2 ] ],
				[ new THREE.Line( lineXGeometry, new GizmoLineMaterial( { color: 0xff0000 } ) ) ]
			],

			Y: [
				[ new THREE.Mesh( arrowGeometry, new GizmoMaterial( { color: 0x00ff00 } ) ), [ 0, 0.5, 0 ] ],
				[	new THREE.Line( lineYGeometry, new GizmoLineMaterial( { color: 0x00ff00 } ) ) ]
			],

			Z: [
				[ new THREE.Mesh( arrowGeometry, new GizmoMaterial( { color: 0x0000ff } ) ), [ 0, 0, 0.5 ], [ Math.PI / 2, 0, 0 ] ],
				[ new THREE.Line( lineZGeometry, new GizmoLineMaterial( { color: 0x0000ff } ) ) ]
			],

			XYZ: [
				[ new THREE.Mesh( new THREE.OctahedronGeometry( 0.1, 0 ), new GizmoMaterial( { color: 0xffffff, opacity: 0.25 } ) ), [ 0, 0, 0 ], [ 0, 0, 0 ] ]
			],

			XY: [
				[ new THREE.Mesh( new THREE.PlaneBufferGeometry( 0.29, 0.29 ), new GizmoMaterial( { color: 0xffff00, opacity: 0.25 } ) ), [ 0.15, 0.15, 0 ] ]
			],

			YZ: [
				[ new THREE.Mesh( new THREE.PlaneBufferGeometry( 0.29, 0.29 ), new GizmoMaterial( { color: 0x00ffff, opacity: 0.25 } ) ), [ 0, 0.15, 0.15 ], [ 0, Math.PI / 2, 0 ] ]
			],

			XZ: [
				[ new THREE.Mesh( new THREE.PlaneBufferGeometry( 0.29, 0.29 ), new GizmoMaterial( { color: 0xff00ff, opacity: 0.25 } ) ), [ 0.15, 0, 0.15 ], [ - Math.PI / 2, 0, 0 ] ]
			]

		};

		this.pickerGizmos = {

			X: [
				[ new THREE.Mesh( new THREE.CylinderBufferGeometry( 0.2, 0, 1, 4, 1, false ), pickerMaterial ), [ 0.6, 0, 0 ], [ 0, 0, - Math.PI / 2 ] ]
			],

			Y: [
				[ new THREE.Mesh( new THREE.CylinderBufferGeometry( 0.2, 0, 1, 4, 1, false ), pickerMaterial ), [ 0, 0.6, 0 ] ]
			],

			Z: [
				[ new THREE.Mesh( new THREE.CylinderBufferGeometry( 0.2, 0, 1, 4, 1, false ), pickerMaterial ), [ 0, 0, 0.6 ], [ Math.PI / 2, 0, 0 ] ]
			],

			XYZ: [
				[ new THREE.Mesh( new THREE.OctahedronGeometry( 0.2, 0 ), pickerMaterial ) ]
			],

			XY: [
				[ new THREE.Mesh( new THREE.PlaneBufferGeometry( 0.4, 0.4 ), pickerMaterial ), [ 0.2, 0.2, 0 ] ]
			],

			YZ: [
				[ new THREE.Mesh( new THREE.PlaneBufferGeometry( 0.4, 0.4 ), pickerMaterial ), [ 0, 0.2, 0.2 ], [ 0, Math.PI / 2, 0 ] ]
			],

			XZ: [
				[ new THREE.Mesh( new THREE.PlaneBufferGeometry( 0.4, 0.4 ), pickerMaterial ), [ 0.2, 0, 0.2 ], [ - Math.PI / 2, 0, 0 ] ]
			]

		};

		this.setActivePlane = function ( axis, eye ) {

			var tempMatrix = new THREE.Matrix4();
			eye.applyMatrix4( tempMatrix.getInverse( tempMatrix.extractRotation( this.planes[ "XY" ].matrixWorld ) ) );

			if ( axis === "X" ) {

				this.activePlane = this.planes[ "XY" ];

				if ( Math.abs( eye.y ) > Math.abs( eye.z ) ) this.activePlane = this.planes[ "XZ" ];

			}

			if ( axis === "Y" ) {

				this.activePlane = this.planes[ "XY" ];

				if ( Math.abs( eye.x ) > Math.abs( eye.z ) ) this.activePlane = this.planes[ "YZ" ];

			}

			if ( axis === "Z" ) {

				this.activePlane = this.planes[ "XZ" ];

				if ( Math.abs( eye.x ) > Math.abs( eye.y ) ) this.activePlane = this.planes[ "YZ" ];

			}

			if ( axis === "XYZ" ) this.activePlane = this.planes[ "XYZE" ];

			if ( axis === "XY" ) this.activePlane = this.planes[ "XY" ];

			if ( axis === "YZ" ) this.activePlane = this.planes[ "YZ" ];

			if ( axis === "XZ" ) this.activePlane = this.planes[ "XZ" ];

		};

		this.init();

	};

	THREE.TransformGizmoTranslate.prototype = Object.create( THREE.TransformGizmo.prototype );
	THREE.TransformGizmoTranslate.prototype.constructor = THREE.TransformGizmoTranslate;

	THREE.TransformGizmoRotate = function () {

		THREE.TransformGizmo.call( this );

		var CircleGeometry = function ( radius, facing, arc ) {

			var geometry = new THREE.BufferGeometry();
			var vertices = [];
			arc = arc ? arc : 1;

			for ( var i = 0; i <= 64 * arc; ++ i ) {

				if ( facing === 'x' ) vertices.push( 0, Math.cos( i / 32 * Math.PI ) * radius, Math.sin( i / 32 * Math.PI ) * radius );
				if ( facing === 'y' ) vertices.push( Math.cos( i / 32 * Math.PI ) * radius, 0, Math.sin( i / 32 * Math.PI ) * radius );
				if ( facing === 'z' ) vertices.push( Math.sin( i / 32 * Math.PI ) * radius, Math.cos( i / 32 * Math.PI ) * radius, 0 );

			}

			geometry.addAttribute( 'position', new THREE.Float32BufferAttribute( vertices, 3 ) );
			return geometry;

		};

		this.handleGizmos = {

			X: [
				[ new THREE.Line( new CircleGeometry( 1, 'x', 0.5 ), new GizmoLineMaterial( { color: 0xff0000 } ) ) ]
			],

			Y: [
				[ new THREE.Line( new CircleGeometry( 1, 'y', 0.5 ), new GizmoLineMaterial( { color: 0x00ff00 } ) ) ]
			],

			Z: [
				[ new THREE.Line( new CircleGeometry( 1, 'z', 0.5 ), new GizmoLineMaterial( { color: 0x0000ff } ) ) ]
			],

			E: [
				[ new THREE.Line( new CircleGeometry( 1.25, 'z', 1 ), new GizmoLineMaterial( { color: 0xcccc00 } ) ) ]
			],

			XYZE: [
				[ new THREE.Line( new CircleGeometry( 1, 'z', 1 ), new GizmoLineMaterial( { color: 0x787878 } ) ) ]
			]

		};

		this.pickerGizmos = {

			X: [
				[ new THREE.Mesh( new THREE.TorusBufferGeometry( 1, 0.12, 4, 12, Math.PI ), pickerMaterial ), [ 0, 0, 0 ], [ 0, - Math.PI / 2, - Math.PI / 2 ] ]
			],

			Y: [
				[ new THREE.Mesh( new THREE.TorusBufferGeometry( 1, 0.12, 4, 12, Math.PI ), pickerMaterial ), [ 0, 0, 0 ], [ Math.PI / 2, 0, 0 ] ]
			],

			Z: [
				[ new THREE.Mesh( new THREE.TorusBufferGeometry( 1, 0.12, 4, 12, Math.PI ), pickerMaterial ), [ 0, 0, 0 ], [ 0, 0, - Math.PI / 2 ] ]
			],

			E: [
				[ new THREE.Mesh( new THREE.TorusBufferGeometry( 1.25, 0.12, 2, 24 ), pickerMaterial ) ]
			],

			XYZE: [
				[ new THREE.Mesh() ]// TODO
			]

		};

		this.setActivePlane = function ( axis ) {

			if ( axis === "E" ) this.activePlane = this.planes[ "XYZE" ];

			if ( axis === "X" ) this.activePlane = this.planes[ "YZ" ];

			if ( axis === "Y" ) this.activePlane = this.planes[ "XZ" ];

			if ( axis === "Z" ) this.activePlane = this.planes[ "XY" ];

		};

		this.update = function ( rotation, eye2 ) {

			THREE.TransformGizmo.prototype.update.apply( this, arguments );

			var tempMatrix = new THREE.Matrix4();
			var worldRotation = new THREE.Euler( 0, 0, 1 );
			var tempQuaternion = new THREE.Quaternion();
			var unitX = new THREE.Vector3( 1, 0, 0 );
			var unitY = new THREE.Vector3( 0, 1, 0 );
			var unitZ = new THREE.Vector3( 0, 0, 1 );
			var quaternionX = new THREE.Quaternion();
			var quaternionY = new THREE.Quaternion();
			var quaternionZ = new THREE.Quaternion();
			var eye = eye2.clone();

			worldRotation.copy( this.planes[ "XY" ].rotation );
			tempQuaternion.setFromEuler( worldRotation );

			tempMatrix.makeRotationFromQuaternion( tempQuaternion ).getInverse( tempMatrix );
			eye.applyMatrix4( tempMatrix );

			this.traverse( function( child ) {

				tempQuaternion.setFromEuler( worldRotation );

				if ( child.name === "X" ) {

					quaternionX.setFromAxisAngle( unitX, Math.atan2( - eye.y, eye.z ) );
					tempQuaternion.multiplyQuaternions( tempQuaternion, quaternionX );
					child.quaternion.copy( tempQuaternion );

				}

				if ( child.name === "Y" ) {

					quaternionY.setFromAxisAngle( unitY, Math.atan2( eye.x, eye.z ) );
					tempQuaternion.multiplyQuaternions( tempQuaternion, quaternionY );
					child.quaternion.copy( tempQuaternion );

				}

				if ( child.name === "Z" ) {

					quaternionZ.setFromAxisAngle( unitZ, Math.atan2( eye.y, eye.x ) );
					tempQuaternion.multiplyQuaternions( tempQuaternion, quaternionZ );
					child.quaternion.copy( tempQuaternion );

				}

			} );

		};

		this.init();

	};

	THREE.TransformGizmoRotate.prototype = Object.create( THREE.TransformGizmo.prototype );
	THREE.TransformGizmoRotate.prototype.constructor = THREE.TransformGizmoRotate;

	THREE.TransformGizmoScale = function () {

		THREE.TransformGizmo.call( this );

		var arrowGeometry = new THREE.Geometry();
		var mesh = new THREE.Mesh( new THREE.BoxGeometry( 0.125, 0.125, 0.125 ) );
		mesh.position.y = 0.5;
		mesh.updateMatrix();

		arrowGeometry.merge( mesh.geometry, mesh.matrix );

		var lineXGeometry = new THREE.BufferGeometry();
		lineXGeometry.addAttribute( 'position', new THREE.Float32BufferAttribute( [ 0, 0, 0,  1, 0, 0 ], 3 ) );

		var lineYGeometry = new THREE.BufferGeometry();
		lineYGeometry.addAttribute( 'position', new THREE.Float32BufferAttribute( [ 0, 0, 0,  0, 1, 0 ], 3 ) );

		var lineZGeometry = new THREE.BufferGeometry();
		lineZGeometry.addAttribute( 'position', new THREE.Float32BufferAttribute( [ 0, 0, 0,  0, 0, 1 ], 3 ) );

		this.handleGizmos = {

			X: [
				[ new THREE.Mesh( arrowGeometry, new GizmoMaterial( { color: 0xff0000 } ) ), [ 0.5, 0, 0 ], [ 0, 0, - Math.PI / 2 ] ],
				[ new THREE.Line( lineXGeometry, new GizmoLineMaterial( { color: 0xff0000 } ) ) ]
			],

			Y: [
				[ new THREE.Mesh( arrowGeometry, new GizmoMaterial( { color: 0x00ff00 } ) ), [ 0, 0.5, 0 ] ],
				[ new THREE.Line( lineYGeometry, new GizmoLineMaterial( { color: 0x00ff00 } ) ) ]
			],

			Z: [
				[ new THREE.Mesh( arrowGeometry, new GizmoMaterial( { color: 0x0000ff } ) ), [ 0, 0, 0.5 ], [ Math.PI / 2, 0, 0 ] ],
				[ new THREE.Line( lineZGeometry, new GizmoLineMaterial( { color: 0x0000ff } ) ) ]
			],

			XYZ: [
				[ new THREE.Mesh( new THREE.BoxBufferGeometry( 0.125, 0.125, 0.125 ), new GizmoMaterial( { color: 0xffffff, opacity: 0.25 } ) ) ]
			]

		};

		this.pickerGizmos = {

			X: [
				[ new THREE.Mesh( new THREE.CylinderBufferGeometry( 0.2, 0, 1, 4, 1, false ), pickerMaterial ), [ 0.6, 0, 0 ], [ 0, 0, - Math.PI / 2 ] ]
			],

			Y: [
				[ new THREE.Mesh( new THREE.CylinderBufferGeometry( 0.2, 0, 1, 4, 1, false ), pickerMaterial ), [ 0, 0.6, 0 ] ]
			],

			Z: [
				[ new THREE.Mesh( new THREE.CylinderBufferGeometry( 0.2, 0, 1, 4, 1, false ), pickerMaterial ), [ 0, 0, 0.6 ], [ Math.PI / 2, 0, 0 ] ]
			],

			XYZ: [
				[ new THREE.Mesh( new THREE.BoxBufferGeometry( 0.4, 0.4, 0.4 ), pickerMaterial ) ]
			]

		};

		this.setActivePlane = function ( axis, eye ) {

			var tempMatrix = new THREE.Matrix4();
			eye.applyMatrix4( tempMatrix.getInverse( tempMatrix.extractRotation( this.planes[ "XY" ].matrixWorld ) ) );

			if ( axis === "X" ) {

				this.activePlane = this.planes[ "XY" ];
				if ( Math.abs( eye.y ) > Math.abs( eye.z ) ) this.activePlane = this.planes[ "XZ" ];

			}

			if ( axis === "Y" ) {

				this.activePlane = this.planes[ "XY" ];
				if ( Math.abs( eye.x ) > Math.abs( eye.z ) ) this.activePlane = this.planes[ "YZ" ];

			}

			if ( axis === "Z" ) {

				this.activePlane = this.planes[ "XZ" ];
				if ( Math.abs( eye.x ) > Math.abs( eye.y ) ) this.activePlane = this.planes[ "YZ" ];

			}

			if ( axis === "XYZ" ) this.activePlane = this.planes[ "XYZE" ];

		};

		this.init();

	};

	THREE.TransformGizmoScale.prototype = Object.create( THREE.TransformGizmo.prototype );
	THREE.TransformGizmoScale.prototype.constructor = THREE.TransformGizmoScale;

	THREE.TransformControls = function ( camera, domElement ) {

		// TODO: Make non-uniform scale and rotate play nice in hierarchies
		// TODO: ADD RXYZ contol

		THREE.Object3D.call( this );

		domElement = ( domElement !== undefined ) ? domElement : document;

		this.object = undefined;
		this.visible = false;
		this.translationSnap = null;
		this.rotationSnap = null;
		this.space = "world";
		this.size = 1;
		this.axis = null;

		var scope = this;

		var _mode = "translate";
		var _dragging = false;
		var _gizmo = {

			"translate": new THREE.TransformGizmoTranslate(),
			"rotate": new THREE.TransformGizmoRotate(),
			"scale": new THREE.TransformGizmoScale()
		};

		for ( var type in _gizmo ) {

			var gizmoObj = _gizmo[ type ];

			gizmoObj.visible = ( type === _mode );
			this.add( gizmoObj );

		}

		var changeEvent = { type: "change" };
		var mouseDownEvent = { type: "mouseDown" };
		var mouseUpEvent = { type: "mouseUp", mode: _mode };
		var objectChangeEvent = { type: "objectChange" };

		var ray = new THREE.Raycaster();
		var pointerVector = new THREE.Vector2();

		var point = new THREE.Vector3();
		var offset = new THREE.Vector3();

		var rotation = new THREE.Vector3();
		var offsetRotation = new THREE.Vector3();
		var scale = 1;

		var lookAtMatrix = new THREE.Matrix4();
		var eye = new THREE.Vector3();

		var tempMatrix = new THREE.Matrix4();
		var tempVector = new THREE.Vector3();
		var tempQuaternion = new THREE.Quaternion();
		var unitX = new THREE.Vector3( 1, 0, 0 );
		var unitY = new THREE.Vector3( 0, 1, 0 );
		var unitZ = new THREE.Vector3( 0, 0, 1 );

		var quaternionXYZ = new THREE.Quaternion();
		var quaternionX = new THREE.Quaternion();
		var quaternionY = new THREE.Quaternion();
		var quaternionZ = new THREE.Quaternion();
		var quaternionE = new THREE.Quaternion();

		var oldPosition = new THREE.Vector3();
		var oldScale = new THREE.Vector3();
		var oldRotationMatrix = new THREE.Matrix4();

		var parentRotationMatrix  = new THREE.Matrix4();
		var parentScale = new THREE.Vector3();

		var worldPosition = new THREE.Vector3();
		var worldRotation = new THREE.Euler();
		var worldRotationMatrix  = new THREE.Matrix4();
		var camPosition = new THREE.Vector3();
		var camRotation = new THREE.Euler();

		domElement.addEventListener( "mousedown", onPointerDown, false );
		domElement.addEventListener( "touchstart", onPointerDown, false );

		domElement.addEventListener( "mousemove", onPointerHover, false );
		domElement.addEventListener( "touchmove", onPointerHover, false );

		domElement.addEventListener( "mousemove", onPointerMove, false );
		domElement.addEventListener( "touchmove", onPointerMove, false );

		domElement.addEventListener( "mouseup", onPointerUp, false );
		domElement.addEventListener( "mouseout", onPointerUp, false );
		domElement.addEventListener( "touchend", onPointerUp, false );
		domElement.addEventListener( "touchcancel", onPointerUp, false );
		domElement.addEventListener( "touchleave", onPointerUp, false );

		this.dispose = function () {

			domElement.removeEventListener( "mousedown", onPointerDown );
			domElement.removeEventListener( "touchstart", onPointerDown );

			domElement.removeEventListener( "mousemove", onPointerHover );
			domElement.removeEventListener( "touchmove", onPointerHover );

			domElement.removeEventListener( "mousemove", onPointerMove );
			domElement.removeEventListener( "touchmove", onPointerMove );

			domElement.removeEventListener( "mouseup", onPointerUp );
			domElement.removeEventListener( "mouseout", onPointerUp );
			domElement.removeEventListener( "touchend", onPointerUp );
			domElement.removeEventListener( "touchcancel", onPointerUp );
			domElement.removeEventListener( "touchleave", onPointerUp );

		};

		this.attach = function ( object ) {

			this.object = object;
			this.visible = true;
			this.update();

		};

		this.detach = function () {

			this.object = undefined;
			this.visible = false;
			this.axis = null;

		};

		this.getMode = function () {

			return _mode;

		};

		this.setMode = function ( mode ) {

			_mode = mode ? mode : _mode;

			if ( _mode === "scale" ) scope.space = "local";

			for ( var type in _gizmo ) _gizmo[ type ].visible = ( type === _mode );

			this.update();
			scope.dispatchEvent( changeEvent );

		};

		this.setTranslationSnap = function ( translationSnap ) {

			scope.translationSnap = translationSnap;

		};

		this.setRotationSnap = function ( rotationSnap ) {

			scope.rotationSnap = rotationSnap;

		};

		this.setSize = function ( size ) {

			scope.size = size;
			this.update();
			scope.dispatchEvent( changeEvent );

		};

		this.setSpace = function ( space ) {

			scope.space = space;
			this.update();
			scope.dispatchEvent( changeEvent );

		};

		this.update = function () {

			if ( scope.object === undefined ) return;

			scope.object.updateMatrixWorld();
			worldPosition.setFromMatrixPosition( scope.object.matrixWorld );
			worldRotation.setFromRotationMatrix( tempMatrix.extractRotation( scope.object.matrixWorld ) );

			camera.updateMatrixWorld();
			camPosition.setFromMatrixPosition( camera.matrixWorld );
			camRotation.setFromRotationMatrix( tempMatrix.extractRotation( camera.matrixWorld ) );

			scale = worldPosition.distanceTo( camPosition ) / 6 * scope.size;
			this.position.copy( worldPosition );
			this.scale.set( scale, scale, scale );

			if ( camera instanceof THREE.PerspectiveCamera ) {

				eye.copy( camPosition ).sub( worldPosition ).normalize();

			} else if ( camera instanceof THREE.OrthographicCamera ) {

				eye.copy( camPosition ).normalize();

			}

			if ( scope.space === "local" ) {

				_gizmo[ _mode ].update( worldRotation, eye );

			} else if ( scope.space === "world" ) {

				_gizmo[ _mode ].update( new THREE.Euler(), eye );

			}

			_gizmo[ _mode ].highlight( scope.axis );

		};

		function onPointerHover( event ) {

			if ( scope.object === undefined || _dragging === true || ( event.button !== undefined && event.button !== 0 ) ) return;

			var pointer = event.changedTouches ? event.changedTouches[ 0 ] : event;

			var intersect = intersectObjects( pointer, _gizmo[ _mode ].pickers.children );

			var axis = null;

			if ( intersect ) {

				axis = intersect.object.name;

				event.preventDefault();

			}

			if ( scope.axis !== axis ) {

				scope.axis = axis;
				scope.update();
				scope.dispatchEvent( changeEvent );

			}

		}

		function onPointerDown( event ) {

			if ( scope.object === undefined || _dragging === true || ( event.button !== undefined && event.button !== 0 ) ) return;

			var pointer = event.changedTouches ? event.changedTouches[ 0 ] : event;

			if ( pointer.button === 0 || pointer.button === undefined ) {

				var intersect = intersectObjects( pointer, _gizmo[ _mode ].pickers.children );

				if ( intersect ) {

					event.preventDefault();
					event.stopPropagation();

					scope.dispatchEvent( mouseDownEvent );

					scope.axis = intersect.object.name;

					scope.update();

					eye.copy( camPosition ).sub( worldPosition ).normalize();

					_gizmo[ _mode ].setActivePlane( scope.axis, eye );

					var planeIntersect = intersectObjects( pointer, [ _gizmo[ _mode ].activePlane ] );

					if ( planeIntersect ) {

						oldPosition.copy( scope.object.position );
						oldScale.copy( scope.object.scale );

						oldRotationMatrix.extractRotation( scope.object.matrix );
						worldRotationMatrix.extractRotation( scope.object.matrixWorld );

						parentRotationMatrix.extractRotation( scope.object.parent.matrixWorld );
						parentScale.setFromMatrixScale( tempMatrix.getInverse( scope.object.parent.matrixWorld ) );

						offset.copy( planeIntersect.point );

					}

				}

			}

			_dragging = true;

		}

		function onPointerMove( event ) {

			if ( scope.object === undefined || scope.axis === null || _dragging === false || ( event.button !== undefined && event.button !== 0 ) ) return;

			var pointer = event.changedTouches ? event.changedTouches[ 0 ] : event;

			var planeIntersect = intersectObjects( pointer, [ _gizmo[ _mode ].activePlane ] );

			if ( planeIntersect === false ) return;

			event.preventDefault();
			event.stopPropagation();

			point.copy( planeIntersect.point );

			if ( _mode === "translate" ) {

				point.sub( offset );
				point.multiply( parentScale );

				if ( scope.space === "local" ) {

					point.applyMatrix4( tempMatrix.getInverse( worldRotationMatrix ) );

					if ( scope.axis.search( "X" ) === - 1 ) point.x = 0;
					if ( scope.axis.search( "Y" ) === - 1 ) point.y = 0;
					if ( scope.axis.search( "Z" ) === - 1 ) point.z = 0;

					point.applyMatrix4( oldRotationMatrix );

					scope.object.position.copy( oldPosition );
					scope.object.position.add( point );

				}

				if ( scope.space === "world" || scope.axis.search( "XYZ" ) !== - 1 ) {

					if ( scope.axis.search( "X" ) === - 1 ) point.x = 0;
					if ( scope.axis.search( "Y" ) === - 1 ) point.y = 0;
					if ( scope.axis.search( "Z" ) === - 1 ) point.z = 0;

					point.applyMatrix4( tempMatrix.getInverse( parentRotationMatrix ) );

					scope.object.position.copy( oldPosition );
					scope.object.position.add( point );

				}

				if ( scope.translationSnap !== null ) {

					if ( scope.space === "local" ) {

						scope.object.position.applyMatrix4( tempMatrix.getInverse( worldRotationMatrix ) );

					}

					if ( scope.axis.search( "X" ) !== - 1 ) scope.object.position.x = Math.round( scope.object.position.x / scope.translationSnap ) * scope.translationSnap;
					if ( scope.axis.search( "Y" ) !== - 1 ) scope.object.position.y = Math.round( scope.object.position.y / scope.translationSnap ) * scope.translationSnap;
					if ( scope.axis.search( "Z" ) !== - 1 ) scope.object.position.z = Math.round( scope.object.position.z / scope.translationSnap ) * scope.translationSnap;

					if ( scope.space === "local" ) {

						scope.object.position.applyMatrix4( worldRotationMatrix );

					}

				}

			} else if ( _mode === "scale" ) {

				point.sub( offset );
				point.multiply( parentScale );

				if ( scope.space === "local" ) {

					if ( scope.axis === "XYZ" ) {

						scale = 1 + ( ( point.y ) / Math.max( oldScale.x, oldScale.y, oldScale.z ) );

						scope.object.scale.x = oldScale.x * scale;
						scope.object.scale.y = oldScale.y * scale;
						scope.object.scale.z = oldScale.z * scale;

					} else {

						point.applyMatrix4( tempMatrix.getInverse( worldRotationMatrix ) );

						if ( scope.axis === "X" ) scope.object.scale.x = oldScale.x * ( 1 + point.x / oldScale.x );
						if ( scope.axis === "Y" ) scope.object.scale.y = oldScale.y * ( 1 + point.y / oldScale.y );
						if ( scope.axis === "Z" ) scope.object.scale.z = oldScale.z * ( 1 + point.z / oldScale.z );

					}

				}

			} else if ( _mode === "rotate" ) {

				point.sub( worldPosition );
				point.multiply( parentScale );
				tempVector.copy( offset ).sub( worldPosition );
				tempVector.multiply( parentScale );

				if ( scope.axis === "E" ) {

					point.applyMatrix4( tempMatrix.getInverse( lookAtMatrix ) );
					tempVector.applyMatrix4( tempMatrix.getInverse( lookAtMatrix ) );

					rotation.set( Math.atan2( point.z, point.y ), Math.atan2( point.x, point.z ), Math.atan2( point.y, point.x ) );
					offsetRotation.set( Math.atan2( tempVector.z, tempVector.y ), Math.atan2( tempVector.x, tempVector.z ), Math.atan2( tempVector.y, tempVector.x ) );

					tempQuaternion.setFromRotationMatrix( tempMatrix.getInverse( parentRotationMatrix ) );

					quaternionE.setFromAxisAngle( eye, rotation.z - offsetRotation.z );
					quaternionXYZ.setFromRotationMatrix( worldRotationMatrix );

					tempQuaternion.multiplyQuaternions( tempQuaternion, quaternionE );
					tempQuaternion.multiplyQuaternions( tempQuaternion, quaternionXYZ );

					scope.object.quaternion.copy( tempQuaternion );

				} else if ( scope.axis === "XYZE" ) {

					quaternionE.setFromEuler( point.clone().cross( tempVector ).normalize() ); // rotation axis

					tempQuaternion.setFromRotationMatrix( tempMatrix.getInverse( parentRotationMatrix ) );
					quaternionX.setFromAxisAngle( quaternionE, - point.clone().angleTo( tempVector ) );
					quaternionXYZ.setFromRotationMatrix( worldRotationMatrix );

					tempQuaternion.multiplyQuaternions( tempQuaternion, quaternionX );
					tempQuaternion.multiplyQuaternions( tempQuaternion, quaternionXYZ );

					scope.object.quaternion.copy( tempQuaternion );

				} else if ( scope.space === "local" ) {

					point.applyMatrix4( tempMatrix.getInverse( worldRotationMatrix ) );

					tempVector.applyMatrix4( tempMatrix.getInverse( worldRotationMatrix ) );

					rotation.set( Math.atan2( point.z, point.y ), Math.atan2( point.x, point.z ), Math.atan2( point.y, point.x ) );
					offsetRotation.set( Math.atan2( tempVector.z, tempVector.y ), Math.atan2( tempVector.x, tempVector.z ), Math.atan2( tempVector.y, tempVector.x ) );

					quaternionXYZ.setFromRotationMatrix( oldRotationMatrix );

					if ( scope.rotationSnap !== null ) {

						quaternionX.setFromAxisAngle( unitX, Math.round( ( rotation.x - offsetRotation.x ) / scope.rotationSnap ) * scope.rotationSnap );
						quaternionY.setFromAxisAngle( unitY, Math.round( ( rotation.y - offsetRotation.y ) / scope.rotationSnap ) * scope.rotationSnap );
						quaternionZ.setFromAxisAngle( unitZ, Math.round( ( rotation.z - offsetRotation.z ) / scope.rotationSnap ) * scope.rotationSnap );

					} else {

						quaternionX.setFromAxisAngle( unitX, rotation.x - offsetRotation.x );
						quaternionY.setFromAxisAngle( unitY, rotation.y - offsetRotation.y );
						quaternionZ.setFromAxisAngle( unitZ, rotation.z - offsetRotation.z );

					}

					if ( scope.axis === "X" ) quaternionXYZ.multiplyQuaternions( quaternionXYZ, quaternionX );
					if ( scope.axis === "Y" ) quaternionXYZ.multiplyQuaternions( quaternionXYZ, quaternionY );
					if ( scope.axis === "Z" ) quaternionXYZ.multiplyQuaternions( quaternionXYZ, quaternionZ );

					scope.object.quaternion.copy( quaternionXYZ );

				} else if ( scope.space === "world" ) {

					rotation.set( Math.atan2( point.z, point.y ), Math.atan2( point.x, point.z ), Math.atan2( point.y, point.x ) );
					offsetRotation.set( Math.atan2( tempVector.z, tempVector.y ), Math.atan2( tempVector.x, tempVector.z ), Math.atan2( tempVector.y, tempVector.x ) );

					tempQuaternion.setFromRotationMatrix( tempMatrix.getInverse( parentRotationMatrix ) );

					if ( scope.rotationSnap !== null ) {

						quaternionX.setFromAxisAngle( unitX, Math.round( ( rotation.x - offsetRotation.x ) / scope.rotationSnap ) * scope.rotationSnap );
						quaternionY.setFromAxisAngle( unitY, Math.round( ( rotation.y - offsetRotation.y ) / scope.rotationSnap ) * scope.rotationSnap );
						quaternionZ.setFromAxisAngle( unitZ, Math.round( ( rotation.z - offsetRotation.z ) / scope.rotationSnap ) * scope.rotationSnap );

					} else {

						quaternionX.setFromAxisAngle( unitX, rotation.x - offsetRotation.x );
						quaternionY.setFromAxisAngle( unitY, rotation.y - offsetRotation.y );
						quaternionZ.setFromAxisAngle( unitZ, rotation.z - offsetRotation.z );

					}

					quaternionXYZ.setFromRotationMatrix( worldRotationMatrix );

					if ( scope.axis === "X" ) tempQuaternion.multiplyQuaternions( tempQuaternion, quaternionX );
					if ( scope.axis === "Y" ) tempQuaternion.multiplyQuaternions( tempQuaternion, quaternionY );
					if ( scope.axis === "Z" ) tempQuaternion.multiplyQuaternions( tempQuaternion, quaternionZ );

					tempQuaternion.multiplyQuaternions( tempQuaternion, quaternionXYZ );

					scope.object.quaternion.copy( tempQuaternion );

				}

			}

			scope.update();
			scope.dispatchEvent( changeEvent );
			scope.dispatchEvent( objectChangeEvent );

		}

		function onPointerUp( event ) {

			event.preventDefault(); // Prevent MouseEvent on mobile

			if ( event.button !== undefined && event.button !== 0 ) return;

			if ( _dragging && ( scope.axis !== null ) ) {

				mouseUpEvent.mode = _mode;
				scope.dispatchEvent( mouseUpEvent );

			}

			_dragging = false;

			if ( 'TouchEvent' in window && event instanceof TouchEvent ) {

				// Force "rollover"

				scope.axis = null;
				scope.update();
				scope.dispatchEvent( changeEvent );

			} else {

				onPointerHover( event );

			}

		}

		function intersectObjects( pointer, objects ) {

			var rect = domElement.getBoundingClientRect();
			var x = ( pointer.clientX - rect.left ) / rect.width;
			var y = ( pointer.clientY - rect.top ) / rect.height;

			pointerVector.set( ( x * 2 ) - 1, - ( y * 2 ) + 1 );
			ray.setFromCamera( pointerVector, camera );

			var intersections = ray.intersectObjects( objects, true );
			return intersections[ 0 ] ? intersections[ 0 ] : false;

		}

	};

	THREE.TransformControls.prototype = Object.create( THREE.Object3D.prototype );
	THREE.TransformControls.prototype.constructor = THREE.TransformControls;

}() );
