# Copyright 2012 United States Government, as represented by the Secretary of Defense, Under
# Secretary of Defense (Personnel & Readiness).
# 
# Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
# in compliance with the License. You may obtain a copy of the License at
# 
#   http://www.apache.org/licenses/LICENSE-2.0
# 
# Unless required by applicable law or agreed to in writing, software distributed under the License
# is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
# or implied. See the License for the specific language governing permissions and limitations under
# the License.

## The component representation of a 3D node
## 
## @name node3.vwf
## @namespace

---
extends: http://vwf.example.com/node.vwf
implements:
- http://vwf.example.com/animation.vwf
- http://vwf.example.com/node3/animation.vwf

properties:

  ## Node casts shadows
  ## 
  ## @name node3.vwf#castShadows
  ## @property

  castShadows:
  
  ## Node receives shadows
  ## 
  ## @name node3.vwf#receiveShadows
  ## @property

  receiveShadows:
  
  ## World transform of 3D node
  ## 
  ## @name node3.vwf#worldTransform
  ## @property

  worldTransform:
    set: |
      var parentInverse = goog.vec.Mat4.create();
      if ( this.parent && goog.vec.Mat4.invert( this.transformFromValue( this.parent.worldTransform ), parentInverse ) ) {
        var transform = goog.vec.Mat4.multMat( parentInverse, this.transformFromValue( value ), goog.vec.Mat4.create() );
        this.transform = transform;
      } else {
        this.transform = value;
      }
    get: |
      if( this.parent && this.parent.worldTransform && this.transform )
      {
        return goog.vec.Mat4.multMat( this.parent.worldTransform, this.transform, goog.vec.Mat4.create() );
      }
      else return this.transform; //@ sourceURL=node3.worldTransform.get.vwf

  ## Transform of 3D node
  ## 
  ## @name node3.vwf#transform
  ## @property

  transform:
    set: |
      var transform = this.transformFromValue( value ); // parse incoming value
      if ( ! goog.vec.Mat4.equals( this.transform || goog.vec.Mat4.createIdentity(), transform ) ) {
        this.transform = transform;
        this.transformChanged( transform );
      }  //@ sourceURL=node3.transform.set.vwf
    get: |
      return this.transform || goog.vec.Mat4.createIdentity(); //@ sourceURL=node3.transform.get.vwf

  ## Translation of 3D node
  ## node.translation <= [ x, y, z ]
  ## 
  ## @name node3.vwf#translation
  ## @property

  translation:
    # node.translation <= [ x, y, z ]
    set: |
      var translation = this.translationFromValue( value ); // parse incoming value
      var transform = this.transform || goog.vec.Mat4.createIdentity();
      goog.vec.Mat4.setColumnValues( transform, 3, translation[0], translation[1], translation[2], 1 );
      this.transform = transform; //@ sourceURL=node3.translation.set.vwf
    # node.translation => [ x, y, z ]
    get: |
      var translation = goog.vec.Vec3.create();
      goog.vec.Mat4.getColumn( this.transform || goog.vec.Mat4.createIdentity(), 3, translation );
      return translation;

  ## Rotation of 3D node
  ## node.rotation <= [ x, y, z, angle ]
  ## 
  ## @name node3.vwf#rotation
  ## @property

  rotation:
    # node.rotation <= [ x, y, z, angle ]
    set: |
      var rotation = this.rotationFromValue( value ); // parse incoming value
      this.quaternion =
        goog.vec.Quaternion.fromAngleAxis(
          rotation[3] * Math.PI / 180,
          goog.vec.Vec3.createFromValues( rotation[0], rotation[1], rotation[2] ),
          goog.vec.Quaternion.create()
        );
    # node.rotation => [ x, y, z, angle ]
    get: |
      var rotation = goog.vec.Vec4.create();
      rotation[3] = goog.vec.Quaternion.toAngleAxis(
        this.quaternion || goog.vec.Quaternion.createFromValues( 0, 0, 0, 1 ),
        rotation
      ) * 180 / Math.PI;
      return rotation;

  ## Rotation matrix of 3D node
  ## 
  ## @name node3.vwf#rotatioMatrix
  ## @property

  rotationMatrix:
    get: |
      return this.unscaledTransform(
        this.transform || goog.vec.Mat4.createIdentity(),
        goog.vec.Vec3.create(),
        goog.vec.Mat4.create()
      );

  ## Quaternion of 3D node
  ## node.quaternion <= [ x, y, z, w ]
  ## 
  ## @name node3.vwf#quaternion
  ## @property

  quaternion:
    # node.quaternion <= [ x, y, z, w ]
    set: |
      var transform = this.transform || goog.vec.Mat4.createIdentity();
      var translation = goog.vec.Vec4.create(); goog.vec.Mat4.getColumn( transform, 3, translation );
      var scale = this.transformScale( transform, goog.vec.Vec3.create() );
      var quaternion = this.quaternionFromValue( value ); // parse incoming value
      goog.vec.Quaternion.toRotationMatrix4(
        quaternion,
        transform
      );
      this.scaledTransform( transform, scale, transform );
      goog.vec.Mat4.setColumn( transform, 3, translation );
      this.transform = transform; //@ sourceURL=node3.quaternion.set
    # node.quaternion => [ x, y, z, w ]
    get: |
      return goog.vec.Quaternion.fromRotationMatrix4(
        this.unscaledTransform(
          this.transform || goog.vec.Mat4.createIdentity(),
          goog.vec.Vec3.create(),
          goog.vec.Mat4.create()
        ),
        goog.vec.Quaternion.create()
      );

  ## Scale of 3D node
  ## node.scale <= [ x, y, z ], node.scale <= s
  ## 
  ## @name node3.vwf#scale
  ## @property

  scale:
    # node.scale <= [ x, y, z ], node.scale <= s
    set: |
      var scale = this.scaleFromValue( value ); // parse incoming value
      var transform = this.transform || goog.vec.Mat4.createIdentity();
      this.scaledTransform(
        this.unscaledTransform(
          transform,
          goog.vec.Vec3.create(),
          transform
        ),
        scale,
        transform
      );
      this.transform = transform;
    # node.scale => [ x, y, z ]
    get: |
      return this.transformScale(
        this.transform || goog.vec.Mat4.createIdentity(),
        goog.vec.Vec3.create()
      );

  ## Enabled
  ## 
  ## @name node3.vwf#enabled
  ## @property

  enabled: true

  ## Bounding box of 3D node
  ## 
  ## @name node3.vwf#boundingbox
  ## @property

  boundingbox: 
    set: |
      this.logger.info("WARNING: node3 boundingbox cannot be set" )


  ## World bounding box of 3D node
  ##
  ## @name node3.vwf#worldBoundingBox
  ## @property

  worldBoundingBox:
    set: |
      this.logger.info("WARNING: node3 worldBoundingBox cannot be set" )
    get: |
      var worldTransform = this.worldTransform;
      if ( worldTransform ) {
        var worldBoundingBox;
        for(var i=0;i<this.children.length;i++) {
          var childBoundingBox = this.children[i].worldBoundingBox;
          if(childBoundingBox) {
            if(!worldBoundingBox) {
              worldBoundingBox = childBoundingBox;
            }
            else {
              worldBoundingBox.max.x = Math.max(worldBoundingBox.max.x, childBoundingBox.max.x);
              worldBoundingBox.max.y = Math.max(worldBoundingBox.max.y, childBoundingBox.max.y);
              worldBoundingBox.max.z = Math.max(worldBoundingBox.max.z, childBoundingBox.max.z);
              worldBoundingBox.min.x = Math.min(worldBoundingBox.min.x, childBoundingBox.min.x);
              worldBoundingBox.min.y = Math.min(worldBoundingBox.min.y, childBoundingBox.min.y);
              worldBoundingBox.min.z = Math.min(worldBoundingBox.min.z, childBoundingBox.min.z);
            }
          }
        }
        if( !worldBoundingBox ) {
          worldBoundingBox = this.boundingbox;
          if ( worldBoundingBox ) {
            var coord0=goog.vec.Mat4.multVec4(worldTransform,[worldBoundingBox.min.x,worldBoundingBox.min.y,worldBoundingBox.min.z,1], goog.vec.Vec4.create() );
            var coord1=goog.vec.Mat4.multVec4(worldTransform,[worldBoundingBox.max.x,worldBoundingBox.min.y,worldBoundingBox.min.z,1], goog.vec.Vec4.create() );
            var coord2=goog.vec.Mat4.multVec4(worldTransform,[worldBoundingBox.min.x,worldBoundingBox.max.y,worldBoundingBox.min.z,1], goog.vec.Vec4.create() );
            var coord3=goog.vec.Mat4.multVec4(worldTransform,[worldBoundingBox.max.x,worldBoundingBox.max.y,worldBoundingBox.min.z,1], goog.vec.Vec4.create() );
            var coord4=goog.vec.Mat4.multVec4(worldTransform,[worldBoundingBox.min.x,worldBoundingBox.min.y,worldBoundingBox.max.z,1], goog.vec.Vec4.create() );
            var coord5=goog.vec.Mat4.multVec4(worldTransform,[worldBoundingBox.max.x,worldBoundingBox.min.y,worldBoundingBox.max.z,1], goog.vec.Vec4.create() );
            var coord6=goog.vec.Mat4.multVec4(worldTransform,[worldBoundingBox.min.x,worldBoundingBox.max.y,worldBoundingBox.max.z,1], goog.vec.Vec4.create() );
            var coord7=goog.vec.Mat4.multVec4(worldTransform,[worldBoundingBox.max.x,worldBoundingBox.max.y,worldBoundingBox.max.z,1], goog.vec.Vec4.create() );
            worldBoundingBox.min.x=Math.min(coord0[0],coord1[0],coord2[0],coord3[0],coord4[0],coord5[0],coord6[0],coord7[0]);
            worldBoundingBox.max.x=Math.max(coord0[0],coord1[0],coord2[0],coord3[0],coord4[0],coord5[0],coord6[0],coord7[0]);
            worldBoundingBox.min.y=Math.min(coord0[1],coord1[1],coord2[1],coord3[1],coord4[1],coord5[1],coord6[1],coord7[1]);
            worldBoundingBox.max.y=Math.max(coord0[1],coord1[1],coord2[1],coord3[1],coord4[1],coord5[1],coord6[1],coord7[1]);
            worldBoundingBox.min.z=Math.min(coord0[2],coord1[2],coord2[2],coord3[2],coord4[2],coord5[2],coord6[2],coord7[2]);
            worldBoundingBox.max.z=Math.max(coord0[2],coord1[2],coord2[2],coord3[2],coord4[2],coord5[2],coord6[2],coord7[2]);
          }
        }
        return worldBoundingBox;
      }
      else {
        return this.boundingbox;
      } 

  ## Offset from center of 3D node
  ## 
  ## @name node3.vwf#centerOffset
  ## @property

  centerOffset: 
    set: |
      this.logger.info( "WARNING: node3 centerOffset cannot be set" )

  ## Vertices of 3D node
  ## 
  ## @name node3.vwf#vertices
  ## @property

  vertices: 
    set: |
      this.logger.info( "WARNING: node3 vertices cannot be set" )

  ## Vertex indices of 3D node
  ## 
  ## @name node3.vwf#vertexIndices
  ## @property

  vertexIndices: 
    set: |
      this.logger.info( "WARNING: node3 vertexIndices cannot be set" )

  ## Speed value
  ## 
  ## @name node3.vwf#speed
  ## @property

  speed: 1

  ## Playing value
  ## 
  ## @name node3.vwf#playing
  ## @property

  playing: false

  ## Looping value
  ## 
  ## @name node3.vwf#looping
  ## @property

  looping: false

  ## Look at value
  ## 
  ## @name lookAt
  ## @property

  lookAt: ""

  ## Visible value
  ## 
  ## @name node3.vwf#visible
  ## @property

  visible: 
    set: |
      this.visible = value;
      this.children.forEach( function( child ) {
        child.visible = value;
      } );
    value: true

events:

  keyDown:
  keyPress:
  keyUp:
  pointerClick:
  pointerDown:
  pointerMove:
  pointerUp:
  pointerOver:
  pointerOut:
  pointerWheel:
  transformChanged:
  touchHold:
  touchTap:
  touchDoubleTap:
  touchDrag:
  touchDragStart:
  touchDragEnd:
  touchDragUp:
  touchDragDown:
  touchDragLeft:
  touchDragRight:
  touchSwipe:
  touchSwipeUp:
  touchSwipeDown:
  touchSwipeLeft:
  touchSwipeRight:
  touchTransform:
  touchTransformStart:
  touchTransformEnd:
  touchRotate:
  touchPinch:
  touchPinchIn:
  touchPinchOut:
  touchStart:
  touchRelease:

scripts:

- |
  // Parse a parameter as a transform specification.
  this.transformFromValue = function( value ) {
    return value && value.length >= 16 ?
      value :
      goog.vec.Mat4.createIdentity();
  };
  // Parse a parameter as a translation specification.
  this.translationFromValue = function( value ) {
    return value && value.length >= 3 ?
      value :
      goog.vec.Vec3.create();
  };
  // Parse a parameter as a rotation specification.
  this.rotationFromValue = function( value ) {
    return value && value.length >= 4 ?
      value :
      goog.vec.Vec4.createFromValues( 1, 0, 0, 0 );
  };
  // Parse a parameter as a quaternion specification.
  this.quaternionFromValue = function( value ) {
    return value && value.length >= 4 ?
      value :
      goog.vec.Quaternion.createFromValues( 0, 0, 0, 1 );
  };
  // Parse a parameter as a scale specification.
  this.scaleFromValue = function( value ) {
    return Object.prototype.toString.call( value ).search( /\[object .*Array\]/ ) == 0 ?
      value.length >= 3 ?
        value :
        goog.vec.Vec3.createFromValues( 1, 1, 1 ) :
      Object.prototype.toString.call( value ) == "[object Number]" ?
        goog.vec.Vec3.createFromValues( value, value, value ) :
        goog.vec.Vec3.createFromValues( 1, 1, 1 );
  };
  // Get the scale vector for a transform and rescale to unity scale.
  this.unscaledTransform = function( transform, scale, resultTransform ) {
    var column = goog.vec.Vec4.create();
    goog.vec.Mat4.getColumn( transform, 0, column );
    goog.vec.Mat4.setColumn( resultTransform, 0, goog.vec.Vec4.scale( column, 1 / ( scale[0] = goog.vec.Vec4.magnitude( column ) ), column ) );
    goog.vec.Mat4.getColumn( transform, 1, column );
    goog.vec.Mat4.setColumn( resultTransform, 1, goog.vec.Vec4.scale( column, 1 / ( scale[1] = goog.vec.Vec4.magnitude( column ) ), column ) );
    goog.vec.Mat4.getColumn( transform, 2, column );
    goog.vec.Mat4.setColumn( resultTransform, 2, goog.vec.Vec4.scale( column, 1 / ( scale[2] = goog.vec.Vec4.magnitude( column ) ), column ) );
    return resultTransform;
  };
  // Set the scale vector for a transform with unity scale.
  this.scaledTransform = function( transform, scale, resultTransform ) {
    var column = goog.vec.Vec4.create();
    goog.vec.Mat4.getColumn( transform, 0, column );
    goog.vec.Mat4.setColumn( resultTransform, 0, goog.vec.Vec4.scale( column, scale[0], column ) );
    goog.vec.Mat4.getColumn( transform, 1, column );
    goog.vec.Mat4.setColumn( resultTransform, 1, goog.vec.Vec4.scale( column, scale[1], column ) );
    goog.vec.Mat4.getColumn( transform, 2, column );
    goog.vec.Mat4.setColumn( resultTransform, 2, goog.vec.Vec4.scale( column, scale[2], column ) );
    return resultTransform;
  };
  // Get the scale vector for a transform.
  this.transformScale = function( transform, scale ) {
    var column = goog.vec.Vec4.create();
    goog.vec.Mat4.getColumn( transform, 0, column );
    scale[0] = goog.vec.Vec4.magnitude( column );
    goog.vec.Mat4.getColumn( transform, 1, column );
    scale[1] = goog.vec.Vec4.magnitude( column );
    goog.vec.Mat4.getColumn( transform, 2, column );
    scale[2] = goog.vec.Vec4.magnitude( column );
    return scale;
  };
  this.state = function( test ) {
    vwf.logger.info( test, "x", Array.prototype.slice.apply( this.transform || goog.vec.Mat4.createIdentity() ) );
    vwf.logger.info( test, "t", Array.prototype.slice.apply( this.translation || goog.vec.Vec3.create() ) );
    vwf.logger.info( test, "o", Array.prototype.slice.apply( this.rotation || goog.vec.Vec4.createFromValues( 1, 0, 0, 0 ) ) );
    vwf.logger.info( test, "s", Array.prototype.slice.apply( this.scale || goog.vec.Vec3.createFromValues( 1, 1, 1 ) ) );
    vwf.logger.info( test, "q", Array.prototype.slice.apply( this.quaternion || goog.vec.Quaternion.createFromValues( 0, 0, 0, 1 ) ) );
  };
  this.test1 = function() {
    this.transform = [];
    this.translation = [ 50, 0, 0 ];
    this.scale = 2;
    this.state( "test1" );
  };
  this.test2 = function() {
    this.scale = 2;
    this.state( "test2 scale 2" );
    this.scale = 1;
    this.state( "test2 scale 1" );
    this.rotation = [ 0, 0, 1, 30 ];
    this.state( "test2 rotation 30" );
    this.scale = 3;
    this.state( "test2 scale 3" );
    this.rotation = [ 0, 0, 1, -30 ];
    this.state( "test2 rotation -30" );
    this.scale = 1;
    this.state( "test2 scale 1" );
  }; //@ sourceURL=node3.vwf