three.js/examples/js/loaders/FBXLoader.js

( function () {

	/**
 * THREE.Loader loads FBX file and generates THREE.Group representing FBX scene.
 * Requires FBX file to be >= 7.0 and in ASCII or >= 6400 in Binary format
 * Versions lower than this may load but will probably have errors
 *
 * Needs Support:
 *	Morph normals / blend shape normals
 *
 * FBX format references:
 * 	https://wiki.blender.org/index.php/User:Mont29/Foundation/FBX_File_Structure
 * 	http://help.autodesk.com/view/FBX/2017/ENU/?guid=__cpp_ref_index_html (C++ SDK reference)
 *
 * 	Binary format specification:
 *		https://code.blender.org/2013/08/fbx-binary-file-format-specification/
 */

	var FBXLoader = function () {

		var fbxTree;
		var connections;
		var sceneGraph;

		function FBXLoader( manager ) {

			THREE.Loader.call( this, manager );

		}

		FBXLoader.prototype = Object.assign( Object.create( THREE.Loader.prototype ), {
			constructor: FBXLoader,
			load: function ( url, onLoad, onProgress, onError ) {

				var scope = this;
				var path = scope.path === '' ? THREE.LoaderUtils.extractUrlBase( url ) : scope.path;
				var loader = new THREE.FileLoader( this.manager );
				loader.setPath( scope.path );
				loader.setResponseType( 'arraybuffer' );
				loader.setRequestHeader( scope.requestHeader );
				loader.setWithCredentials( scope.withCredentials );
				loader.load( url, function ( buffer ) {

					try {

						onLoad( scope.parse( buffer, path ) );

					} catch ( e ) {

						if ( onError ) {

							onError( e );

						} else {

							console.error( e );

						}

						scope.manager.itemError( url );

					}

				}, onProgress, onError );

			},
			parse: function ( FBXBuffer, path ) {

				if ( isFbxFormatBinary( FBXBuffer ) ) {

					fbxTree = new BinaryParser().parse( FBXBuffer );

				} else {

					var FBXText = convertArrayBufferToString( FBXBuffer );

					if ( ! isFbxFormatASCII( FBXText ) ) {

						throw new Error( 'THREE.FBXLoader: Unknown format.' );

					}

					if ( getFbxVersion( FBXText ) < 7000 ) {

						throw new Error( 'THREE.FBXLoader: FBX version not supported, FileVersion: ' + getFbxVersion( FBXText ) );

					}

					fbxTree = new TextParser().parse( FBXText );

				} // console.log( fbxTree );


				var textureLoader = new THREE.TextureLoader( this.manager ).setPath( this.resourcePath || path ).setCrossOrigin( this.crossOrigin );
				return new FBXTreeParser( textureLoader, this.manager ).parse( fbxTree );

			}
		} ); // Parse the FBXTree object returned by the BinaryParser or TextParser and return a THREE.Group

		function FBXTreeParser( textureLoader, manager ) {

			this.textureLoader = textureLoader;
			this.manager = manager;

		}

		FBXTreeParser.prototype = {
			constructor: FBXTreeParser,
			parse: function () {

				connections = this.parseConnections();
				var images = this.parseImages();
				var textures = this.parseTextures( images );
				var materials = this.parseMaterials( textures );
				var deformers = this.parseDeformers();
				var geometryMap = new GeometryParser().parse( deformers );
				this.parseScene( deformers, geometryMap, materials );
				return sceneGraph;

			},
			// Parses FBXTree.Connections which holds parent-child connections between objects (e.g. material -> texture, model->geometry )
			// and details the connection type
			parseConnections: function () {

				var connectionMap = new Map();

				if ( 'Connections' in fbxTree ) {

					var rawConnections = fbxTree.Connections.connections;
					rawConnections.forEach( function ( rawConnection ) {

						var fromID = rawConnection[ 0 ];
						var toID = rawConnection[ 1 ];
						var relationship = rawConnection[ 2 ];

						if ( ! connectionMap.has( fromID ) ) {

							connectionMap.set( fromID, {
								parents: [],
								children: []
							} );

						}

						var parentRelationship = {
							ID: toID,
							relationship: relationship
						};
						connectionMap.get( fromID ).parents.push( parentRelationship );

						if ( ! connectionMap.has( toID ) ) {

							connectionMap.set( toID, {
								parents: [],
								children: []
							} );

						}

						var childRelationship = {
							ID: fromID,
							relationship: relationship
						};
						connectionMap.get( toID ).children.push( childRelationship );

					} );

				}

				return connectionMap;

			},
			// Parse FBXTree.Objects.Video for embedded image data
			// These images are connected to textures in FBXTree.Objects.Textures
			// via FBXTree.Connections.
			parseImages: function () {

				var images = {};
				var blobs = {};

				if ( 'Video' in fbxTree.Objects ) {

					var videoNodes = fbxTree.Objects.Video;

					for ( var nodeID in videoNodes ) {

						var videoNode = videoNodes[ nodeID ];
						var id = parseInt( nodeID );
						images[ id ] = videoNode.RelativeFilename || videoNode.Filename; // raw image data is in videoNode.Content

						if ( 'Content' in videoNode ) {

							var arrayBufferContent = videoNode.Content instanceof ArrayBuffer && videoNode.Content.byteLength > 0;
							var base64Content = typeof videoNode.Content === 'string' && videoNode.Content !== '';

							if ( arrayBufferContent || base64Content ) {

								var image = this.parseImage( videoNodes[ nodeID ] );
								blobs[ videoNode.RelativeFilename || videoNode.Filename ] = image;

							}

						}

					}

				}

				for ( var id in images ) {

					var filename = images[ id ];
					if ( blobs[ filename ] !== undefined ) images[ id ] = blobs[ filename ]; else images[ id ] = images[ id ].split( '\\' ).pop();

				}

				return images;

			},
			// Parse embedded image data in FBXTree.Video.Content
			parseImage: function ( videoNode ) {

				var content = videoNode.Content;
				var fileName = videoNode.RelativeFilename || videoNode.Filename;
				var extension = fileName.slice( fileName.lastIndexOf( '.' ) + 1 ).toLowerCase();
				var type;

				switch ( extension ) {

					case 'bmp':
						type = 'image/bmp';
						break;

					case 'jpg':
					case 'jpeg':
						type = 'image/jpeg';
						break;

					case 'png':
						type = 'image/png';
						break;

					case 'tif':
						type = 'image/tiff';
						break;

					case 'tga':
						if ( this.manager.getHandler( '.tga' ) === null ) {

							console.warn( 'FBXLoader: TGA loader not found, skipping ', fileName );

						}

						type = 'image/tga';
						break;

					default:
						console.warn( 'FBXLoader: Image type "' + extension + '" is not supported.' );
						return;

				}

				if ( typeof content === 'string' ) {

					// ASCII format
					return 'data:' + type + ';base64,' + content;

				} else {

					// Binary Format
					var array = new Uint8Array( content );
					return window.URL.createObjectURL( new Blob( [ array ], {
						type: type
					} ) );

				}

			},
			// Parse nodes in FBXTree.Objects.Texture
			// These contain details such as UV scaling, cropping, rotation etc and are connected
			// to images in FBXTree.Objects.Video
			parseTextures: function ( images ) {

				var textureMap = new Map();

				if ( 'Texture' in fbxTree.Objects ) {

					var textureNodes = fbxTree.Objects.Texture;

					for ( var nodeID in textureNodes ) {

						var texture = this.parseTexture( textureNodes[ nodeID ], images );
						textureMap.set( parseInt( nodeID ), texture );

					}

				}

				return textureMap;

			},
			// Parse individual node in FBXTree.Objects.Texture
			parseTexture: function ( textureNode, images ) {

				var texture = this.loadTexture( textureNode, images );
				texture.ID = textureNode.id;
				texture.name = textureNode.attrName;
				var wrapModeU = textureNode.WrapModeU;
				var wrapModeV = textureNode.WrapModeV;
				var valueU = wrapModeU !== undefined ? wrapModeU.value : 0;
				var valueV = wrapModeV !== undefined ? wrapModeV.value : 0; // http://download.autodesk.com/us/fbx/SDKdocs/FBX_SDK_Help/files/fbxsdkref/class_k_fbx_texture.html#889640e63e2e681259ea81061b85143a
				// 0: repeat(default), 1: clamp

				texture.wrapS = valueU === 0 ? THREE.RepeatWrapping : THREE.ClampToEdgeWrapping;
				texture.wrapT = valueV === 0 ? THREE.RepeatWrapping : THREE.ClampToEdgeWrapping;

				if ( 'Scaling' in textureNode ) {

					var values = textureNode.Scaling.value;
					texture.repeat.x = values[ 0 ];
					texture.repeat.y = values[ 1 ];

				}

				return texture;

			},
			// load a texture specified as a blob or data URI, or via an external URL using THREE.TextureLoader
			loadTexture: function ( textureNode, images ) {

				var fileName;
				var currentPath = this.textureLoader.path;
				var children = connections.get( textureNode.id ).children;

				if ( children !== undefined && children.length > 0 && images[ children[ 0 ].ID ] !== undefined ) {

					fileName = images[ children[ 0 ].ID ];

					if ( fileName.indexOf( 'blob:' ) === 0 || fileName.indexOf( 'data:' ) === 0 ) {

						this.textureLoader.setPath( undefined );

					}

				}

				var texture;
				var extension = textureNode.FileName.slice( - 3 ).toLowerCase();

				if ( extension === 'tga' ) {

					var loader = this.manager.getHandler( '.tga' );

					if ( loader === null ) {

						console.warn( 'FBXLoader: TGA loader not found, creating placeholder texture for', textureNode.RelativeFilename );
						texture = new THREE.Texture();

					} else {

						texture = loader.load( fileName );

					}

				} else if ( extension === 'psd' ) {

					console.warn( 'FBXLoader: PSD textures are not supported, creating placeholder texture for', textureNode.RelativeFilename );
					texture = new THREE.Texture();

				} else {

					texture = this.textureLoader.load( fileName );

				}

				this.textureLoader.setPath( currentPath );
				return texture;

			},
			// Parse nodes in FBXTree.Objects.Material
			parseMaterials: function ( textureMap ) {

				var materialMap = new Map();

				if ( 'Material' in fbxTree.Objects ) {

					var materialNodes = fbxTree.Objects.Material;

					for ( var nodeID in materialNodes ) {

						var material = this.parseMaterial( materialNodes[ nodeID ], textureMap );
						if ( material !== null ) materialMap.set( parseInt( nodeID ), material );

					}

				}

				return materialMap;

			},
			// Parse single node in FBXTree.Objects.Material
			// Materials are connected to texture maps in FBXTree.Objects.Textures
			// FBX format currently only supports Lambert and Phong shading models
			parseMaterial: function ( materialNode, textureMap ) {

				var ID = materialNode.id;
				var name = materialNode.attrName;
				var type = materialNode.ShadingModel; // Case where FBX wraps shading model in property object.

				if ( typeof type === 'object' ) {

					type = type.value;

				} // Ignore unused materials which don't have any connections.


				if ( ! connections.has( ID ) ) return null;
				var parameters = this.parseParameters( materialNode, textureMap, ID );
				var material;

				switch ( type.toLowerCase() ) {

					case 'phong':
						material = new THREE.MeshPhongMaterial();
						break;

					case 'lambert':
						material = new THREE.MeshLambertMaterial();
						break;

					default:
						console.warn( 'THREE.FBXLoader: unknown material type "%s". Defaulting to THREE.MeshPhongMaterial.', type );
						material = new THREE.MeshPhongMaterial();
						break;

				}

				material.setValues( parameters );
				material.name = name;
				return material;

			},
			// Parse FBX material and return parameters suitable for a three.js material
			// Also parse the texture map and return any textures associated with the material
			parseParameters: function ( materialNode, textureMap, ID ) {

				var parameters = {};

				if ( materialNode.BumpFactor ) {

					parameters.bumpScale = materialNode.BumpFactor.value;

				}

				if ( materialNode.Diffuse ) {

					parameters.color = new THREE.Color().fromArray( materialNode.Diffuse.value );

				} else if ( materialNode.DiffuseColor && ( materialNode.DiffuseColor.type === 'Color' || materialNode.DiffuseColor.type === 'ColorRGB' ) ) {

					// The blender exporter exports diffuse here instead of in materialNode.Diffuse
					parameters.color = new THREE.Color().fromArray( materialNode.DiffuseColor.value );

				}

				if ( materialNode.DisplacementFactor ) {

					parameters.displacementScale = materialNode.DisplacementFactor.value;

				}

				if ( materialNode.Emissive ) {

					parameters.emissive = new THREE.Color().fromArray( materialNode.Emissive.value );

				} else if ( materialNode.EmissiveColor && ( materialNode.EmissiveColor.type === 'Color' || materialNode.EmissiveColor.type === 'ColorRGB' ) ) {

					// The blender exporter exports emissive color here instead of in materialNode.Emissive
					parameters.emissive = new THREE.Color().fromArray( materialNode.EmissiveColor.value );

				}

				if ( materialNode.EmissiveFactor ) {

					parameters.emissiveIntensity = parseFloat( materialNode.EmissiveFactor.value );

				}

				if ( materialNode.Opacity ) {

					parameters.opacity = parseFloat( materialNode.Opacity.value );

				}

				if ( parameters.opacity < 1.0 ) {

					parameters.transparent = true;

				}

				if ( materialNode.ReflectionFactor ) {

					parameters.reflectivity = materialNode.ReflectionFactor.value;

				}

				if ( materialNode.Shininess ) {

					parameters.shininess = materialNode.Shininess.value;

				}

				if ( materialNode.Specular ) {

					parameters.specular = new THREE.Color().fromArray( materialNode.Specular.value );

				} else if ( materialNode.SpecularColor && materialNode.SpecularColor.type === 'Color' ) {

					// The blender exporter exports specular color here instead of in materialNode.Specular
					parameters.specular = new THREE.Color().fromArray( materialNode.SpecularColor.value );

				}

				var scope = this;
				connections.get( ID ).children.forEach( function ( child ) {

					var type = child.relationship;

					switch ( type ) {

						case 'Bump':
							parameters.bumpMap = scope.getTexture( textureMap, child.ID );
							break;

						case 'Maya|TEX_ao_map':
							parameters.aoMap = scope.getTexture( textureMap, child.ID );
							break;

						case 'DiffuseColor':
						case 'Maya|TEX_color_map':
							parameters.map = scope.getTexture( textureMap, child.ID );
							parameters.map.encoding = THREE.sRGBEncoding;
							break;

						case 'DisplacementColor':
							parameters.displacementMap = scope.getTexture( textureMap, child.ID );
							break;

						case 'EmissiveColor':
							parameters.emissiveMap = scope.getTexture( textureMap, child.ID );
							parameters.emissiveMap.encoding = THREE.sRGBEncoding;
							break;

						case 'NormalMap':
						case 'Maya|TEX_normal_map':
							parameters.normalMap = scope.getTexture( textureMap, child.ID );
							break;

						case 'ReflectionColor':
							parameters.envMap = scope.getTexture( textureMap, child.ID );
							parameters.envMap.mapping = THREE.EquirectangularReflectionMapping;
							parameters.envMap.encoding = THREE.sRGBEncoding;
							break;

						case 'SpecularColor':
							parameters.specularMap = scope.getTexture( textureMap, child.ID );
							parameters.specularMap.encoding = THREE.sRGBEncoding;
							break;

						case 'TransparentColor':
						case 'TransparencyFactor':
							parameters.alphaMap = scope.getTexture( textureMap, child.ID );
							parameters.transparent = true;
							break;

						case 'AmbientColor':
						case 'ShininessExponent': // AKA glossiness map

						case 'SpecularFactor': // AKA specularLevel

						case 'VectorDisplacementColor': // NOTE: Seems to be a copy of DisplacementColor

						default:
							console.warn( 'THREE.FBXLoader: %s map is not supported in three.js, skipping texture.', type );
							break;

					}

				} );
				return parameters;

			},
			// get a texture from the textureMap for use by a material.
			getTexture: function ( textureMap, id ) {

				// if the texture is a layered texture, just use the first layer and issue a warning
				if ( 'LayeredTexture' in fbxTree.Objects && id in fbxTree.Objects.LayeredTexture ) {

					console.warn( 'THREE.FBXLoader: layered textures are not supported in three.js. Discarding all but first layer.' );
					id = connections.get( id ).children[ 0 ].ID;

				}

				return textureMap.get( id );

			},
			// Parse nodes in FBXTree.Objects.Deformer
			// Deformer node can contain skinning or Vertex Cache animation data, however only skinning is supported here
			// Generates map of THREE.Skeleton-like objects for use later when generating and binding skeletons.
			parseDeformers: function () {

				var skeletons = {};
				var morphTargets = {};

				if ( 'Deformer' in fbxTree.Objects ) {

					var DeformerNodes = fbxTree.Objects.Deformer;

					for ( var nodeID in DeformerNodes ) {

						var deformerNode = DeformerNodes[ nodeID ];
						var relationships = connections.get( parseInt( nodeID ) );

						if ( deformerNode.attrType === 'Skin' ) {

							var skeleton = this.parseSkeleton( relationships, DeformerNodes );
							skeleton.ID = nodeID;
							if ( relationships.parents.length > 1 ) console.warn( 'THREE.FBXLoader: skeleton attached to more than one geometry is not supported.' );
							skeleton.geometryID = relationships.parents[ 0 ].ID;
							skeletons[ nodeID ] = skeleton;

						} else if ( deformerNode.attrType === 'BlendShape' ) {

							var morphTarget = {
								id: nodeID
							};
							morphTarget.rawTargets = this.parseMorphTargets( relationships, DeformerNodes );
							morphTarget.id = nodeID;
							if ( relationships.parents.length > 1 ) console.warn( 'THREE.FBXLoader: morph target attached to more than one geometry is not supported.' );
							morphTargets[ nodeID ] = morphTarget;

						}

					}

				}

				return {
					skeletons: skeletons,
					morphTargets: morphTargets
				};

			},
			// Parse single nodes in FBXTree.Objects.Deformer
			// The top level skeleton node has type 'Skin' and sub nodes have type 'Cluster'
			// Each skin node represents a skeleton and each cluster node represents a bone
			parseSkeleton: function ( relationships, deformerNodes ) {

				var rawBones = [];
				relationships.children.forEach( function ( child ) {

					var boneNode = deformerNodes[ child.ID ];
					if ( boneNode.attrType !== 'Cluster' ) return;
					var rawBone = {
						ID: child.ID,
						indices: [],
						weights: [],
						transformLink: new THREE.Matrix4().fromArray( boneNode.TransformLink.a ) // transform: new THREE.Matrix4().fromArray( boneNode.Transform.a ),
						// linkMode: boneNode.Mode,

					};

					if ( 'Indexes' in boneNode ) {

						rawBone.indices = boneNode.Indexes.a;
						rawBone.weights = boneNode.Weights.a;

					}

					rawBones.push( rawBone );

				} );
				return {
					rawBones: rawBones,
					bones: []
				};

			},
			// The top level morph deformer node has type "BlendShape" and sub nodes have type "BlendShapeChannel"
			parseMorphTargets: function ( relationships, deformerNodes ) {

				var rawMorphTargets = [];

				for ( var i = 0; i < relationships.children.length; i ++ ) {

					var child = relationships.children[ i ];
					var morphTargetNode = deformerNodes[ child.ID ];
					var rawMorphTarget = {
						name: morphTargetNode.attrName,
						initialWeight: morphTargetNode.DeformPercent,
						id: morphTargetNode.id,
						fullWeights: morphTargetNode.FullWeights.a
					};
					if ( morphTargetNode.attrType !== 'BlendShapeChannel' ) return;
					rawMorphTarget.geoID = connections.get( parseInt( child.ID ) ).children.filter( function ( child ) {

						return child.relationship === undefined;

					} )[ 0 ].ID;
					rawMorphTargets.push( rawMorphTarget );

				}

				return rawMorphTargets;

			},
			// create the main THREE.Group() to be returned by the loader
			parseScene: function ( deformers, geometryMap, materialMap ) {

				sceneGraph = new THREE.Group();
				var modelMap = this.parseModels( deformers.skeletons, geometryMap, materialMap );
				var modelNodes = fbxTree.Objects.Model;
				var scope = this;
				modelMap.forEach( function ( model ) {

					var modelNode = modelNodes[ model.ID ];
					scope.setLookAtProperties( model, modelNode );
					var parentConnections = connections.get( model.ID ).parents;
					parentConnections.forEach( function ( connection ) {

						var parent = modelMap.get( connection.ID );
						if ( parent !== undefined ) parent.add( model );

					} );

					if ( model.parent === null ) {

						sceneGraph.add( model );

					}

				} );
				this.bindSkeleton( deformers.skeletons, geometryMap, modelMap );
				this.createAmbientLight();
				this.setupMorphMaterials();
				sceneGraph.traverse( function ( node ) {

					if ( node.userData.transformData ) {

						if ( node.parent ) {

							node.userData.transformData.parentMatrix = node.parent.matrix;
							node.userData.transformData.parentMatrixWorld = node.parent.matrixWorld;

						}

						var transform = generateTransform( node.userData.transformData );
						node.applyMatrix4( transform );
						node.updateWorldMatrix();

					}

				} );
				var animations = new AnimationParser().parse(); // if all the models where already combined in a single group, just return that

				if ( sceneGraph.children.length === 1 && sceneGraph.children[ 0 ].isGroup ) {

					sceneGraph.children[ 0 ].animations = animations;
					sceneGraph = sceneGraph.children[ 0 ];

				}

				sceneGraph.animations = animations;

			},
			// parse nodes in FBXTree.Objects.Model
			parseModels: function ( skeletons, geometryMap, materialMap ) {

				var modelMap = new Map();
				var modelNodes = fbxTree.Objects.Model;

				for ( var nodeID in modelNodes ) {

					var id = parseInt( nodeID );
					var node = modelNodes[ nodeID ];
					var relationships = connections.get( id );
					var model = this.buildSkeleton( relationships, skeletons, id, node.attrName );

					if ( ! model ) {

						switch ( node.attrType ) {

							case 'Camera':
								model = this.createCamera( relationships );
								break;

							case 'Light':
								model = this.createLight( relationships );
								break;

							case 'Mesh':
								model = this.createMesh( relationships, geometryMap, materialMap );
								break;

							case 'NurbsCurve':
								model = this.createCurve( relationships, geometryMap );
								break;

							case 'LimbNode':
							case 'Root':
								model = new THREE.Bone();
								break;

							case 'Null':
							default:
								model = new THREE.Group();
								break;

						}

						model.name = node.attrName ? THREE.PropertyBinding.sanitizeNodeName( node.attrName ) : '';
						model.ID = id;

					}

					this.getTransformData( model, node );
					modelMap.set( id, model );

				}

				return modelMap;

			},
			buildSkeleton: function ( relationships, skeletons, id, name ) {

				var bone = null;
				relationships.parents.forEach( function ( parent ) {

					for ( var ID in skeletons ) {

						var skeleton = skeletons[ ID ];
						skeleton.rawBones.forEach( function ( rawBone, i ) {

							if ( rawBone.ID === parent.ID ) {

								var subBone = bone;
								bone = new THREE.Bone();
								bone.matrixWorld.copy( rawBone.transformLink ); // set name and id here - otherwise in cases where "subBone" is created it will not have a name / id

								bone.name = name ? THREE.PropertyBinding.sanitizeNodeName( name ) : '';
								bone.ID = id;
								skeleton.bones[ i ] = bone; // In cases where a bone is shared between multiple meshes
								// duplicate the bone here and and it as a child of the first bone

								if ( subBone !== null ) {

									bone.add( subBone );

								}

							}

						} );

					}

				} );
				return bone;

			},
			// create a THREE.PerspectiveCamera or THREE.OrthographicCamera
			createCamera: function ( relationships ) {

				var model;
				var cameraAttribute;
				relationships.children.forEach( function ( child ) {

					var attr = fbxTree.Objects.NodeAttribute[ child.ID ];

					if ( attr !== undefined ) {

						cameraAttribute = attr;

					}

				} );

				if ( cameraAttribute === undefined ) {

					model = new THREE.Object3D();

				} else {

					var type = 0;

					if ( cameraAttribute.CameraProjectionType !== undefined && cameraAttribute.CameraProjectionType.value === 1 ) {

						type = 1;

					}

					var nearClippingPlane = 1;

					if ( cameraAttribute.NearPlane !== undefined ) {

						nearClippingPlane = cameraAttribute.NearPlane.value / 1000;

					}

					var farClippingPlane = 1000;

					if ( cameraAttribute.FarPlane !== undefined ) {

						farClippingPlane = cameraAttribute.FarPlane.value / 1000;

					}

					var width = window.innerWidth;
					var height = window.innerHeight;

					if ( cameraAttribute.AspectWidth !== undefined && cameraAttribute.AspectHeight !== undefined ) {

						width = cameraAttribute.AspectWidth.value;
						height = cameraAttribute.AspectHeight.value;

					}

					var aspect = width / height;
					var fov = 45;

					if ( cameraAttribute.FieldOfView !== undefined ) {

						fov = cameraAttribute.FieldOfView.value;

					}

					var focalLength = cameraAttribute.FocalLength ? cameraAttribute.FocalLength.value : null;

					switch ( type ) {

						case 0:
						// Perspective
							model = new THREE.PerspectiveCamera( fov, aspect, nearClippingPlane, farClippingPlane );
							if ( focalLength !== null ) model.setFocalLength( focalLength );
							break;

						case 1:
						// Orthographic
							model = new THREE.OrthographicCamera( - width / 2, width / 2, height / 2, - height / 2, nearClippingPlane, farClippingPlane );
							break;

						default:
							console.warn( 'THREE.FBXLoader: Unknown camera type ' + type + '.' );
							model = new THREE.Object3D();
							break;

					}

				}

				return model;

			},
			// Create a THREE.DirectionalLight, THREE.PointLight or THREE.SpotLight
			createLight: function ( relationships ) {

				var model;
				var lightAttribute;
				relationships.children.forEach( function ( child ) {

					var attr = fbxTree.Objects.NodeAttribute[ child.ID ];

					if ( attr !== undefined ) {

						lightAttribute = attr;

					}

				} );

				if ( lightAttribute === undefined ) {

					model = new THREE.Object3D();

				} else {

					var type; // LightType can be undefined for Point lights

					if ( lightAttribute.LightType === undefined ) {

						type = 0;

					} else {

						type = lightAttribute.LightType.value;

					}

					var color = 0xffffff;

					if ( lightAttribute.Color !== undefined ) {

						color = new THREE.Color().fromArray( lightAttribute.Color.value );

					}

					var intensity = lightAttribute.Intensity === undefined ? 1 : lightAttribute.Intensity.value / 100; // light disabled

					if ( lightAttribute.CastLightOnObject !== undefined && lightAttribute.CastLightOnObject.value === 0 ) {

						intensity = 0;

					}

					var distance = 0;

					if ( lightAttribute.FarAttenuationEnd !== undefined ) {

						if ( lightAttribute.EnableFarAttenuation !== undefined && lightAttribute.EnableFarAttenuation.value === 0 ) {

							distance = 0;

						} else {

							distance = lightAttribute.FarAttenuationEnd.value;

						}

					} // TODO: could this be calculated linearly from FarAttenuationStart to FarAttenuationEnd?


					var decay = 1;

					switch ( type ) {

						case 0:
						// Point
							model = new THREE.PointLight( color, intensity, distance, decay );
							break;

						case 1:
						// Directional
							model = new THREE.DirectionalLight( color, intensity );
							break;

						case 2:
						// Spot
							var angle = Math.PI / 3;

							if ( lightAttribute.InnerAngle !== undefined ) {

								angle = THREE.MathUtils.degToRad( lightAttribute.InnerAngle.value );

							}

							var penumbra = 0;

							if ( lightAttribute.OuterAngle !== undefined ) {

								// TODO: this is not correct - FBX calculates outer and inner angle in degrees
								// with OuterAngle > InnerAngle && OuterAngle <= Math.PI
								// while three.js uses a penumbra between (0, 1) to attenuate the inner angle
								penumbra = THREE.MathUtils.degToRad( lightAttribute.OuterAngle.value );
								penumbra = Math.max( penumbra, 1 );

							}

							model = new THREE.SpotLight( color, intensity, distance, angle, penumbra, decay );
							break;

						default:
							console.warn( 'THREE.FBXLoader: Unknown light type ' + lightAttribute.LightType.value + ', defaulting to a THREE.PointLight.' );
							model = new THREE.PointLight( color, intensity );
							break;

					}

					if ( lightAttribute.CastShadows !== undefined && lightAttribute.CastShadows.value === 1 ) {

						model.castShadow = true;

					}

				}

				return model;

			},
			createMesh: function ( relationships, geometryMap, materialMap ) {

				var model;
				var geometry = null;
				var material = null;
				var materials = []; // get geometry and materials(s) from connections

				relationships.children.forEach( function ( child ) {

					if ( geometryMap.has( child.ID ) ) {

						geometry = geometryMap.get( child.ID );

					}

					if ( materialMap.has( child.ID ) ) {

						materials.push( materialMap.get( child.ID ) );

					}

				} );

				if ( materials.length > 1 ) {

					material = materials;

				} else if ( materials.length > 0 ) {

					material = materials[ 0 ];

				} else {

					material = new THREE.MeshPhongMaterial( {
						color: 0xcccccc
					} );
					materials.push( material );

				}

				if ( 'color' in geometry.attributes ) {

					materials.forEach( function ( material ) {

						material.vertexColors = true;

					} );

				}

				if ( geometry.FBX_Deformer ) {

					materials.forEach( function ( material ) {

						material.skinning = true;

					} );
					model = new THREE.SkinnedMesh( geometry, material );
					model.normalizeSkinWeights();

				} else {

					model = new THREE.Mesh( geometry, material );

				}

				return model;

			},
			createCurve: function ( relationships, geometryMap ) {

				var geometry = relationships.children.reduce( function ( geo, child ) {

					if ( geometryMap.has( child.ID ) ) geo = geometryMap.get( child.ID );
					return geo;

				}, null ); // FBX does not list materials for Nurbs lines, so we'll just put our own in here.

				var material = new THREE.LineBasicMaterial( {
					color: 0x3300ff,
					linewidth: 1
				} );
				return new THREE.Line( geometry, material );

			},
			// parse the model node for transform data
			getTransformData: function ( model, modelNode ) {

				var transformData = {};
				if ( 'InheritType' in modelNode ) transformData.inheritType = parseInt( modelNode.InheritType.value );
				if ( 'RotationOrder' in modelNode ) transformData.eulerOrder = getEulerOrder( modelNode.RotationOrder.value ); else transformData.eulerOrder = 'ZYX';
				if ( 'Lcl_Translation' in modelNode ) transformData.translation = modelNode.Lcl_Translation.value;
				if ( 'PreRotation' in modelNode ) transformData.preRotation = modelNode.PreRotation.value;
				if ( 'Lcl_Rotation' in modelNode ) transformData.rotation = modelNode.Lcl_Rotation.value;
				if ( 'PostRotation' in modelNode ) transformData.postRotation = modelNode.PostRotation.value;
				if ( 'Lcl_Scaling' in modelNode ) transformData.scale = modelNode.Lcl_Scaling.value;
				if ( 'ScalingOffset' in modelNode ) transformData.scalingOffset = modelNode.ScalingOffset.value;
				if ( 'ScalingPivot' in modelNode ) transformData.scalingPivot = modelNode.ScalingPivot.value;
				if ( 'RotationOffset' in modelNode ) transformData.rotationOffset = modelNode.RotationOffset.value;
				if ( 'RotationPivot' in modelNode ) transformData.rotationPivot = modelNode.RotationPivot.value;
				model.userData.transformData = transformData;

			},
			setLookAtProperties: function ( model, modelNode ) {

				if ( 'LookAtProperty' in modelNode ) {

					var children = connections.get( model.ID ).children;
					children.forEach( function ( child ) {

						if ( child.relationship === 'LookAtProperty' ) {

							var lookAtTarget = fbxTree.Objects.Model[ child.ID ];

							if ( 'Lcl_Translation' in lookAtTarget ) {

								var pos = lookAtTarget.Lcl_Translation.value; // THREE.DirectionalLight, THREE.SpotLight

								if ( model.target !== undefined ) {

									model.target.position.fromArray( pos );
									sceneGraph.add( model.target );

								} else {

									// Cameras and other Object3Ds
									model.lookAt( new THREE.Vector3().fromArray( pos ) );

								}

							}

						}

					} );

				}

			},
			bindSkeleton: function ( skeletons, geometryMap, modelMap ) {

				var bindMatrices = this.parsePoseNodes();

				for ( var ID in skeletons ) {

					var skeleton = skeletons[ ID ];
					var parents = connections.get( parseInt( skeleton.ID ) ).parents;
					parents.forEach( function ( parent ) {

						if ( geometryMap.has( parent.ID ) ) {

							var geoID = parent.ID;
							var geoRelationships = connections.get( geoID );
							geoRelationships.parents.forEach( function ( geoConnParent ) {

								if ( modelMap.has( geoConnParent.ID ) ) {

									var model = modelMap.get( geoConnParent.ID );
									model.bind( new THREE.Skeleton( skeleton.bones ), bindMatrices[ geoConnParent.ID ] );

								}

							} );

						}

					} );

				}

			},
			parsePoseNodes: function () {

				var bindMatrices = {};

				if ( 'Pose' in fbxTree.Objects ) {

					var BindPoseNode = fbxTree.Objects.Pose;

					for ( var nodeID in BindPoseNode ) {

						if ( BindPoseNode[ nodeID ].attrType === 'BindPose' ) {

							var poseNodes = BindPoseNode[ nodeID ].PoseNode;

							if ( Array.isArray( poseNodes ) ) {

								poseNodes.forEach( function ( poseNode ) {

									bindMatrices[ poseNode.Node ] = new THREE.Matrix4().fromArray( poseNode.Matrix.a );

								} );

							} else {

								bindMatrices[ poseNodes.Node ] = new THREE.Matrix4().fromArray( poseNodes.Matrix.a );

							}

						}

					}

				}

				return bindMatrices;

			},
			// Parse ambient color in FBXTree.GlobalSettings - if it's not set to black (default), create an ambient light
			createAmbientLight: function () {

				if ( 'GlobalSettings' in fbxTree && 'AmbientColor' in fbxTree.GlobalSettings ) {

					var ambientColor = fbxTree.GlobalSettings.AmbientColor.value;
					var r = ambientColor[ 0 ];
					var g = ambientColor[ 1 ];
					var b = ambientColor[ 2 ];

					if ( r !== 0 || g !== 0 || b !== 0 ) {

						var color = new THREE.Color( r, g, b );
						sceneGraph.add( new THREE.AmbientLight( color, 1 ) );

					}

				}

			},
			setupMorphMaterials: function () {

				var scope = this;
				sceneGraph.traverse( function ( child ) {

					if ( child.isMesh ) {

						if ( child.geometry.morphAttributes.position && child.geometry.morphAttributes.position.length ) {

							if ( Array.isArray( child.material ) ) {

								child.material.forEach( function ( material, i ) {

									scope.setupMorphMaterial( child, material, i );

								} );

							} else {

								scope.setupMorphMaterial( child, child.material );

							}

						}

					}

				} );

			},
			setupMorphMaterial: function ( child, material, index ) {

				var uuid = child.uuid;
				var matUuid = material.uuid; // if a geometry has morph targets, it cannot share the material with other geometries

				var sharedMat = false;
				sceneGraph.traverse( function ( node ) {

					if ( node.isMesh ) {

						if ( Array.isArray( node.material ) ) {

							node.material.forEach( function ( mat ) {

								if ( mat.uuid === matUuid && node.uuid !== uuid ) sharedMat = true;

							} );

						} else if ( node.material.uuid === matUuid && node.uuid !== uuid ) sharedMat = true;

					}

				} );

				if ( sharedMat === true ) {

					var clonedMat = material.clone();
					clonedMat.morphTargets = true;
					if ( index === undefined ) child.material = clonedMat; else child.material[ index ] = clonedMat;

				} else material.morphTargets = true;

			}
		}; // parse Geometry data from FBXTree and return map of BufferGeometries

		function GeometryParser() {}

		GeometryParser.prototype = {
			constructor: GeometryParser,
			// Parse nodes in FBXTree.Objects.Geometry
			parse: function ( deformers ) {

				var geometryMap = new Map();

				if ( 'Geometry' in fbxTree.Objects ) {

					var geoNodes = fbxTree.Objects.Geometry;

					for ( var nodeID in geoNodes ) {

						var relationships = connections.get( parseInt( nodeID ) );
						var geo = this.parseGeometry( relationships, geoNodes[ nodeID ], deformers );
						geometryMap.set( parseInt( nodeID ), geo );

					}

				}

				return geometryMap;

			},
			// Parse single node in FBXTree.Objects.Geometry
			parseGeometry: function ( relationships, geoNode, deformers ) {

				switch ( geoNode.attrType ) {

					case 'Mesh':
						return this.parseMeshGeometry( relationships, geoNode, deformers );
						break;

					case 'NurbsCurve':
						return this.parseNurbsGeometry( geoNode );
						break;

				}

			},
			// Parse single node mesh geometry in FBXTree.Objects.Geometry
			parseMeshGeometry: function ( relationships, geoNode, deformers ) {

				var skeletons = deformers.skeletons;
				var morphTargets = [];
				var modelNodes = relationships.parents.map( function ( parent ) {

					return fbxTree.Objects.Model[ parent.ID ];

				} ); // don't create geometry if it is not associated with any models

				if ( modelNodes.length === 0 ) return;
				var skeleton = relationships.children.reduce( function ( skeleton, child ) {

					if ( skeletons[ child.ID ] !== undefined ) skeleton = skeletons[ child.ID ];
					return skeleton;

				}, null );
				relationships.children.forEach( function ( child ) {

					if ( deformers.morphTargets[ child.ID ] !== undefined ) {

						morphTargets.push( deformers.morphTargets[ child.ID ] );

					}

				} ); // Assume one model and get the preRotation from that
				// if there is more than one model associated with the geometry this may cause problems

				var modelNode = modelNodes[ 0 ];
				var transformData = {};
				if ( 'RotationOrder' in modelNode ) transformData.eulerOrder = getEulerOrder( modelNode.RotationOrder.value );
				if ( 'InheritType' in modelNode ) transformData.inheritType = parseInt( modelNode.InheritType.value );
				if ( 'GeometricTranslation' in modelNode ) transformData.translation = modelNode.GeometricTranslation.value;
				if ( 'GeometricRotation' in modelNode ) transformData.rotation = modelNode.GeometricRotation.value;
				if ( 'GeometricScaling' in modelNode ) transformData.scale = modelNode.GeometricScaling.value;
				var transform = generateTransform( transformData );
				return this.genGeometry( geoNode, skeleton, morphTargets, transform );

			},
			// Generate a THREE.BufferGeometry from a node in FBXTree.Objects.Geometry
			genGeometry: function ( geoNode, skeleton, morphTargets, preTransform ) {

				var geo = new THREE.BufferGeometry();
				if ( geoNode.attrName ) geo.name = geoNode.attrName;
				var geoInfo = this.parseGeoNode( geoNode, skeleton );
				var buffers = this.genBuffers( geoInfo );
				var positionAttribute = new THREE.Float32BufferAttribute( buffers.vertex, 3 );
				positionAttribute.applyMatrix4( preTransform );
				geo.setAttribute( 'position', positionAttribute );

				if ( buffers.colors.length > 0 ) {

					geo.setAttribute( 'color', new THREE.Float32BufferAttribute( buffers.colors, 3 ) );

				}

				if ( skeleton ) {

					geo.setAttribute( 'skinIndex', new THREE.Uint16BufferAttribute( buffers.weightsIndices, 4 ) );
					geo.setAttribute( 'skinWeight', new THREE.Float32BufferAttribute( buffers.vertexWeights, 4 ) ); // used later to bind the skeleton to the model

					geo.FBX_Deformer = skeleton;

				}

				if ( buffers.normal.length > 0 ) {

					var normalMatrix = new THREE.Matrix3().getNormalMatrix( preTransform );
					var normalAttribute = new THREE.Float32BufferAttribute( buffers.normal, 3 );
					normalAttribute.applyNormalMatrix( normalMatrix );
					geo.setAttribute( 'normal', normalAttribute );

				}

				buffers.uvs.forEach( function ( uvBuffer, i ) {

					// subsequent uv buffers are called 'uv1', 'uv2', ...
					var name = 'uv' + ( i + 1 ).toString(); // the first uv buffer is just called 'uv'

					if ( i === 0 ) {

						name = 'uv';

					}

					geo.setAttribute( name, new THREE.Float32BufferAttribute( buffers.uvs[ i ], 2 ) );

				} );

				if ( geoInfo.material && geoInfo.material.mappingType !== 'AllSame' ) {

					// Convert the material indices of each vertex into rendering groups on the geometry.
					var prevMaterialIndex = buffers.materialIndex[ 0 ];
					var startIndex = 0;
					buffers.materialIndex.forEach( function ( currentIndex, i ) {

						if ( currentIndex !== prevMaterialIndex ) {

							geo.addGroup( startIndex, i - startIndex, prevMaterialIndex );
							prevMaterialIndex = currentIndex;
							startIndex = i;

						}

					} ); // the loop above doesn't add the last group, do that here.

					if ( geo.groups.length > 0 ) {

						var lastGroup = geo.groups[ geo.groups.length - 1 ];
						var lastIndex = lastGroup.start + lastGroup.count;

						if ( lastIndex !== buffers.materialIndex.length ) {

							geo.addGroup( lastIndex, buffers.materialIndex.length - lastIndex, prevMaterialIndex );

						}

					} // case where there are multiple materials but the whole geometry is only
					// using one of them


					if ( geo.groups.length === 0 ) {

						geo.addGroup( 0, buffers.materialIndex.length, buffers.materialIndex[ 0 ] );

					}

				}

				this.addMorphTargets( geo, geoNode, morphTargets, preTransform );
				return geo;

			},
			parseGeoNode: function ( geoNode, skeleton ) {

				var geoInfo = {};
				geoInfo.vertexPositions = geoNode.Vertices !== undefined ? geoNode.Vertices.a : [];
				geoInfo.vertexIndices = geoNode.PolygonVertexIndex !== undefined ? geoNode.PolygonVertexIndex.a : [];

				if ( geoNode.LayerElementColor ) {

					geoInfo.color = this.parseVertexColors( geoNode.LayerElementColor[ 0 ] );

				}

				if ( geoNode.LayerElementMaterial ) {

					geoInfo.material = this.parseMaterialIndices( geoNode.LayerElementMaterial[ 0 ] );

				}

				if ( geoNode.LayerElementNormal ) {

					geoInfo.normal = this.parseNormals( geoNode.LayerElementNormal[ 0 ] );

				}

				if ( geoNode.LayerElementUV ) {

					geoInfo.uv = [];
					var i = 0;

					while ( geoNode.LayerElementUV[ i ] ) {

						if ( geoNode.LayerElementUV[ i ].UV ) {

							geoInfo.uv.push( this.parseUVs( geoNode.LayerElementUV[ i ] ) );

						}

						i ++;

					}

				}

				geoInfo.weightTable = {};

				if ( skeleton !== null ) {

					geoInfo.skeleton = skeleton;
					skeleton.rawBones.forEach( function ( rawBone, i ) {

						// loop over the bone's vertex indices and weights
						rawBone.indices.forEach( function ( index, j ) {

							if ( geoInfo.weightTable[ index ] === undefined ) geoInfo.weightTable[ index ] = [];
							geoInfo.weightTable[ index ].push( {
								id: i,
								weight: rawBone.weights[ j ]
							} );

						} );

					} );

				}

				return geoInfo;

			},
			genBuffers: function ( geoInfo ) {

				var buffers = {
					vertex: [],
					normal: [],
					colors: [],
					uvs: [],
					materialIndex: [],
					vertexWeights: [],
					weightsIndices: []
				};
				var polygonIndex = 0;
				var faceLength = 0;
				var displayedWeightsWarning = false; // these will hold data for a single face

				var facePositionIndexes = [];
				var faceNormals = [];
				var faceColors = [];
				var faceUVs = [];
				var faceWeights = [];
				var faceWeightIndices = [];
				var scope = this;
				geoInfo.vertexIndices.forEach( function ( vertexIndex, polygonVertexIndex ) {

					var endOfFace = false; // Face index and vertex index arrays are combined in a single array
					// A cube with quad faces looks like this:
					// PolygonVertexIndex: *24 {
					//	a: 0, 1, 3, -3, 2, 3, 5, -5, 4, 5, 7, -7, 6, 7, 1, -1, 1, 7, 5, -4, 6, 0, 2, -5
					//	}
					// Negative numbers mark the end of a face - first face here is 0, 1, 3, -3
					// to find index of last vertex bit shift the index: ^ - 1

					if ( vertexIndex < 0 ) {

						vertexIndex = vertexIndex ^ - 1; // equivalent to ( x * -1 ) - 1

						endOfFace = true;

					}

					var weightIndices = [];
					var weights = [];
					facePositionIndexes.push( vertexIndex * 3, vertexIndex * 3 + 1, vertexIndex * 3 + 2 );

					if ( geoInfo.color ) {

						var data = getData( polygonVertexIndex, polygonIndex, vertexIndex, geoInfo.color );
						faceColors.push( data[ 0 ], data[ 1 ], data[ 2 ] );

					}

					if ( geoInfo.skeleton ) {

						if ( geoInfo.weightTable[ vertexIndex ] !== undefined ) {

							geoInfo.weightTable[ vertexIndex ].forEach( function ( wt ) {

								weights.push( wt.weight );
								weightIndices.push( wt.id );

							} );

						}

						if ( weights.length > 4 ) {

							if ( ! displayedWeightsWarning ) {

								console.warn( 'THREE.FBXLoader: Vertex has more than 4 skinning weights assigned to vertex. Deleting additional weights.' );
								displayedWeightsWarning = true;

							}

							var wIndex = [ 0, 0, 0, 0 ];
							var Weight = [ 0, 0, 0, 0 ];
							weights.forEach( function ( weight, weightIndex ) {

								var currentWeight = weight;
								var currentIndex = weightIndices[ weightIndex ];
								Weight.forEach( function ( comparedWeight, comparedWeightIndex, comparedWeightArray ) {

									if ( currentWeight > comparedWeight ) {

										comparedWeightArray[ comparedWeightIndex ] = currentWeight;
										currentWeight = comparedWeight;
										var tmp = wIndex[ comparedWeightIndex ];
										wIndex[ comparedWeightIndex ] = currentIndex;
										currentIndex = tmp;

									}

								} );

							} );
							weightIndices = wIndex;
							weights = Weight;

						} // if the weight array is shorter than 4 pad with 0s


						while ( weights.length < 4 ) {

							weights.push( 0 );
							weightIndices.push( 0 );

						}

						for ( var i = 0; i < 4; ++ i ) {

							faceWeights.push( weights[ i ] );
							faceWeightIndices.push( weightIndices[ i ] );

						}

					}

					if ( geoInfo.normal ) {

						var data = getData( polygonVertexIndex, polygonIndex, vertexIndex, geoInfo.normal );
						faceNormals.push( data[ 0 ], data[ 1 ], data[ 2 ] );

					}

					if ( geoInfo.material && geoInfo.material.mappingType !== 'AllSame' ) {

						var materialIndex = getData( polygonVertexIndex, polygonIndex, vertexIndex, geoInfo.material )[ 0 ];

					}

					if ( geoInfo.uv ) {

						geoInfo.uv.forEach( function ( uv, i ) {

							var data = getData( polygonVertexIndex, polygonIndex, vertexIndex, uv );

							if ( faceUVs[ i ] === undefined ) {

								faceUVs[ i ] = [];

							}

							faceUVs[ i ].push( data[ 0 ] );
							faceUVs[ i ].push( data[ 1 ] );

						} );

					}

					faceLength ++;

					if ( endOfFace ) {

						scope.genFace( buffers, geoInfo, facePositionIndexes, materialIndex, faceNormals, faceColors, faceUVs, faceWeights, faceWeightIndices, faceLength );
						polygonIndex ++;
						faceLength = 0; // reset arrays for the next face

						facePositionIndexes = [];
						faceNormals = [];
						faceColors = [];
						faceUVs = [];
						faceWeights = [];
						faceWeightIndices = [];

					}

				} );
				return buffers;

			},
			// Generate data for a single face in a geometry. If the face is a quad then split it into 2 tris
			genFace: function ( buffers, geoInfo, facePositionIndexes, materialIndex, faceNormals, faceColors, faceUVs, faceWeights, faceWeightIndices, faceLength ) {

				for ( var i = 2; i < faceLength; i ++ ) {

					buffers.vertex.push( geoInfo.vertexPositions[ facePositionIndexes[ 0 ] ] );
					buffers.vertex.push( geoInfo.vertexPositions[ facePositionIndexes[ 1 ] ] );
					buffers.vertex.push( geoInfo.vertexPositions[ facePositionIndexes[ 2 ] ] );
					buffers.vertex.push( geoInfo.vertexPositions[ facePositionIndexes[ ( i - 1 ) * 3 ] ] );
					buffers.vertex.push( geoInfo.vertexPositions[ facePositionIndexes[ ( i - 1 ) * 3 + 1 ] ] );
					buffers.vertex.push( geoInfo.vertexPositions[ facePositionIndexes[ ( i - 1 ) * 3 + 2 ] ] );
					buffers.vertex.push( geoInfo.vertexPositions[ facePositionIndexes[ i * 3 ] ] );
					buffers.vertex.push( geoInfo.vertexPositions[ facePositionIndexes[ i * 3 + 1 ] ] );
					buffers.vertex.push( geoInfo.vertexPositions[ facePositionIndexes[ i * 3 + 2 ] ] );

					if ( geoInfo.skeleton ) {

						buffers.vertexWeights.push( faceWeights[ 0 ] );
						buffers.vertexWeights.push( faceWeights[ 1 ] );
						buffers.vertexWeights.push( faceWeights[ 2 ] );
						buffers.vertexWeights.push( faceWeights[ 3 ] );
						buffers.vertexWeights.push( faceWeights[ ( i - 1 ) * 4 ] );
						buffers.vertexWeights.push( faceWeights[ ( i - 1 ) * 4 + 1 ] );
						buffers.vertexWeights.push( faceWeights[ ( i - 1 ) * 4 + 2 ] );
						buffers.vertexWeights.push( faceWeights[ ( i - 1 ) * 4 + 3 ] );
						buffers.vertexWeights.push( faceWeights[ i * 4 ] );
						buffers.vertexWeights.push( faceWeights[ i * 4 + 1 ] );
						buffers.vertexWeights.push( faceWeights[ i * 4 + 2 ] );
						buffers.vertexWeights.push( faceWeights[ i * 4 + 3 ] );
						buffers.weightsIndices.push( faceWeightIndices[ 0 ] );
						buffers.weightsIndices.push( faceWeightIndices[ 1 ] );
						buffers.weightsIndices.push( faceWeightIndices[ 2 ] );
						buffers.weightsIndices.push( faceWeightIndices[ 3 ] );
						buffers.weightsIndices.push( faceWeightIndices[ ( i - 1 ) * 4 ] );
						buffers.weightsIndices.push( faceWeightIndices[ ( i - 1 ) * 4 + 1 ] );
						buffers.weightsIndices.push( faceWeightIndices[ ( i - 1 ) * 4 + 2 ] );
						buffers.weightsIndices.push( faceWeightIndices[ ( i - 1 ) * 4 + 3 ] );
						buffers.weightsIndices.push( faceWeightIndices[ i * 4 ] );
						buffers.weightsIndices.push( faceWeightIndices[ i * 4 + 1 ] );
						buffers.weightsIndices.push( faceWeightIndices[ i * 4 + 2 ] );
						buffers.weightsIndices.push( faceWeightIndices[ i * 4 + 3 ] );

					}

					if ( geoInfo.color ) {

						buffers.colors.push( faceColors[ 0 ] );
						buffers.colors.push( faceColors[ 1 ] );
						buffers.colors.push( faceColors[ 2 ] );
						buffers.colors.push( faceColors[ ( i - 1 ) * 3 ] );
						buffers.colors.push( faceColors[ ( i - 1 ) * 3 + 1 ] );
						buffers.colors.push( faceColors[ ( i - 1 ) * 3 + 2 ] );
						buffers.colors.push( faceColors[ i * 3 ] );
						buffers.colors.push( faceColors[ i * 3 + 1 ] );
						buffers.colors.push( faceColors[ i * 3 + 2 ] );

					}

					if ( geoInfo.material && geoInfo.material.mappingType !== 'AllSame' ) {

						buffers.materialIndex.push( materialIndex );
						buffers.materialIndex.push( materialIndex );
						buffers.materialIndex.push( materialIndex );

					}

					if ( geoInfo.normal ) {

						buffers.normal.push( faceNormals[ 0 ] );
						buffers.normal.push( faceNormals[ 1 ] );
						buffers.normal.push( faceNormals[ 2 ] );
						buffers.normal.push( faceNormals[ ( i - 1 ) * 3 ] );
						buffers.normal.push( faceNormals[ ( i - 1 ) * 3 + 1 ] );
						buffers.normal.push( faceNormals[ ( i - 1 ) * 3 + 2 ] );
						buffers.normal.push( faceNormals[ i * 3 ] );
						buffers.normal.push( faceNormals[ i * 3 + 1 ] );
						buffers.normal.push( faceNormals[ i * 3 + 2 ] );

					}

					if ( geoInfo.uv ) {

						geoInfo.uv.forEach( function ( uv, j ) {

							if ( buffers.uvs[ j ] === undefined ) buffers.uvs[ j ] = [];
							buffers.uvs[ j ].push( faceUVs[ j ][ 0 ] );
							buffers.uvs[ j ].push( faceUVs[ j ][ 1 ] );
							buffers.uvs[ j ].push( faceUVs[ j ][ ( i - 1 ) * 2 ] );
							buffers.uvs[ j ].push( faceUVs[ j ][ ( i - 1 ) * 2 + 1 ] );
							buffers.uvs[ j ].push( faceUVs[ j ][ i * 2 ] );
							buffers.uvs[ j ].push( faceUVs[ j ][ i * 2 + 1 ] );

						} );

					}

				}

			},
			addMorphTargets: function ( parentGeo, parentGeoNode, morphTargets, preTransform ) {

				if ( morphTargets.length === 0 ) return;
				parentGeo.morphTargetsRelative = true;
				parentGeo.morphAttributes.position = []; // parentGeo.morphAttributes.normal = []; // not implemented

				var scope = this;
				morphTargets.forEach( function ( morphTarget ) {

					morphTarget.rawTargets.forEach( function ( rawTarget ) {

						var morphGeoNode = fbxTree.Objects.Geometry[ rawTarget.geoID ];

						if ( morphGeoNode !== undefined ) {

							scope.genMorphGeometry( parentGeo, parentGeoNode, morphGeoNode, preTransform, rawTarget.name );

						}

					} );

				} );

			},
			// a morph geometry node is similar to a standard	node, and the node is also contained
			// in FBXTree.Objects.Geometry, however it can only have attributes for position, normal
			// and a special attribute Index defining which vertices of the original geometry are affected
			// Normal and position attributes only have data for the vertices that are affected by the morph
			genMorphGeometry: function ( parentGeo, parentGeoNode, morphGeoNode, preTransform, name ) {

				var vertexIndices = parentGeoNode.PolygonVertexIndex !== undefined ? parentGeoNode.PolygonVertexIndex.a : [];
				var morphPositionsSparse = morphGeoNode.Vertices !== undefined ? morphGeoNode.Vertices.a : [];
				var indices = morphGeoNode.Indexes !== undefined ? morphGeoNode.Indexes.a : [];
				var length = parentGeo.attributes.position.count * 3;
				var morphPositions = new Float32Array( length );

				for ( var i = 0; i < indices.length; i ++ ) {

					var morphIndex = indices[ i ] * 3;
					morphPositions[ morphIndex ] = morphPositionsSparse[ i * 3 ];
					morphPositions[ morphIndex + 1 ] = morphPositionsSparse[ i * 3 + 1 ];
					morphPositions[ morphIndex + 2 ] = morphPositionsSparse[ i * 3 + 2 ];

				} // TODO: add morph normal support


				var morphGeoInfo = {
					vertexIndices: vertexIndices,
					vertexPositions: morphPositions
				};
				var morphBuffers = this.genBuffers( morphGeoInfo );
				var positionAttribute = new THREE.Float32BufferAttribute( morphBuffers.vertex, 3 );
				positionAttribute.name = name || morphGeoNode.attrName;
				positionAttribute.applyMatrix4( preTransform );
				parentGeo.morphAttributes.position.push( positionAttribute );

			},
			// Parse normal from FBXTree.Objects.Geometry.LayerElementNormal if it exists
			parseNormals: function ( NormalNode ) {

				var mappingType = NormalNode.MappingInformationType;
				var referenceType = NormalNode.ReferenceInformationType;
				var buffer = NormalNode.Normals.a;
				var indexBuffer = [];

				if ( referenceType === 'IndexToDirect' ) {

					if ( 'NormalIndex' in NormalNode ) {

						indexBuffer = NormalNode.NormalIndex.a;

					} else if ( 'NormalsIndex' in NormalNode ) {

						indexBuffer = NormalNode.NormalsIndex.a;

					}

				}

				return {
					dataSize: 3,
					buffer: buffer,
					indices: indexBuffer,
					mappingType: mappingType,
					referenceType: referenceType
				};

			},
			// Parse UVs from FBXTree.Objects.Geometry.LayerElementUV if it exists
			parseUVs: function ( UVNode ) {

				var mappingType = UVNode.MappingInformationType;
				var referenceType = UVNode.ReferenceInformationType;
				var buffer = UVNode.UV.a;
				var indexBuffer = [];

				if ( referenceType === 'IndexToDirect' ) {

					indexBuffer = UVNode.UVIndex.a;

				}

				return {
					dataSize: 2,
					buffer: buffer,
					indices: indexBuffer,
					mappingType: mappingType,
					referenceType: referenceType
				};

			},
			// Parse Vertex Colors from FBXTree.Objects.Geometry.LayerElementColor if it exists
			parseVertexColors: function ( ColorNode ) {

				var mappingType = ColorNode.MappingInformationType;
				var referenceType = ColorNode.ReferenceInformationType;
				var buffer = ColorNode.Colors.a;
				var indexBuffer = [];

				if ( referenceType === 'IndexToDirect' ) {

					indexBuffer = ColorNode.ColorIndex.a;

				}

				return {
					dataSize: 4,
					buffer: buffer,
					indices: indexBuffer,
					mappingType: mappingType,
					referenceType: referenceType
				};

			},
			// Parse mapping and material data in FBXTree.Objects.Geometry.LayerElementMaterial if it exists
			parseMaterialIndices: function ( MaterialNode ) {

				var mappingType = MaterialNode.MappingInformationType;
				var referenceType = MaterialNode.ReferenceInformationType;

				if ( mappingType === 'NoMappingInformation' ) {

					return {
						dataSize: 1,
						buffer: [ 0 ],
						indices: [ 0 ],
						mappingType: 'AllSame',
						referenceType: referenceType
					};

				}

				var materialIndexBuffer = MaterialNode.Materials.a; // Since materials are stored as indices, there's a bit of a mismatch between FBX and what
				// we expect.So we create an intermediate buffer that points to the index in the buffer,
				// for conforming with the other functions we've written for other data.

				var materialIndices = [];

				for ( var i = 0; i < materialIndexBuffer.length; ++ i ) {

					materialIndices.push( i );

				}

				return {
					dataSize: 1,
					buffer: materialIndexBuffer,
					indices: materialIndices,
					mappingType: mappingType,
					referenceType: referenceType
				};

			},
			// Generate a NurbGeometry from a node in FBXTree.Objects.Geometry
			parseNurbsGeometry: function ( geoNode ) {

				if ( THREE.NURBSCurve === undefined ) {

					console.error( 'THREE.FBXLoader: The loader relies on THREE.NURBSCurve for any nurbs present in the model. Nurbs will show up as empty geometry.' );
					return new THREE.BufferGeometry();

				}

				var order = parseInt( geoNode.Order );

				if ( isNaN( order ) ) {

					console.error( 'THREE.FBXLoader: Invalid Order %s given for geometry ID: %s', geoNode.Order, geoNode.id );
					return new THREE.BufferGeometry();

				}

				var degree = order - 1;
				var knots = geoNode.KnotVector.a;
				var controlPoints = [];
				var pointsValues = geoNode.Points.a;

				for ( var i = 0, l = pointsValues.length; i < l; i += 4 ) {

					controlPoints.push( new THREE.Vector4().fromArray( pointsValues, i ) );

				}

				var startKnot, endKnot;

				if ( geoNode.Form === 'Closed' ) {

					controlPoints.push( controlPoints[ 0 ] );

				} else if ( geoNode.Form === 'Periodic' ) {

					startKnot = degree;
					endKnot = knots.length - 1 - startKnot;

					for ( var i = 0; i < degree; ++ i ) {

						controlPoints.push( controlPoints[ i ] );

					}

				}

				var curve = new THREE.NURBSCurve( degree, knots, controlPoints, startKnot, endKnot );
				var vertices = curve.getPoints( controlPoints.length * 7 );
				var positions = new Float32Array( vertices.length * 3 );
				vertices.forEach( function ( vertex, i ) {

					vertex.toArray( positions, i * 3 );

				} );
				var geometry = new THREE.BufferGeometry();
				geometry.setAttribute( 'position', new THREE.BufferAttribute( positions, 3 ) );
				return geometry;

			}
		}; // parse animation data from FBXTree

		function AnimationParser() {}

		AnimationParser.prototype = {
			constructor: AnimationParser,
			// take raw animation clips and turn them into three.js animation clips
			parse: function () {

				var animationClips = [];
				var rawClips = this.parseClips();

				if ( rawClips !== undefined ) {

					for ( var key in rawClips ) {

						var rawClip = rawClips[ key ];
						var clip = this.addClip( rawClip );
						animationClips.push( clip );

					}

				}

				return animationClips;

			},
			parseClips: function () {

				// since the actual transformation data is stored in FBXTree.Objects.AnimationCurve,
				// if this is undefined we can safely assume there are no animations
				if ( fbxTree.Objects.AnimationCurve === undefined ) return undefined;
				var curveNodesMap = this.parseAnimationCurveNodes();
				this.parseAnimationCurves( curveNodesMap );
				var layersMap = this.parseAnimationLayers( curveNodesMap );
				var rawClips = this.parseAnimStacks( layersMap );
				return rawClips;

			},
			// parse nodes in FBXTree.Objects.AnimationCurveNode
			// each AnimationCurveNode holds data for an animation transform for a model (e.g. left arm rotation )
			// and is referenced by an AnimationLayer
			parseAnimationCurveNodes: function () {

				var rawCurveNodes = fbxTree.Objects.AnimationCurveNode;
				var curveNodesMap = new Map();

				for ( var nodeID in rawCurveNodes ) {

					var rawCurveNode = rawCurveNodes[ nodeID ];

					if ( rawCurveNode.attrName.match( /S|R|T|DeformPercent/ ) !== null ) {

						var curveNode = {
							id: rawCurveNode.id,
							attr: rawCurveNode.attrName,
							curves: {}
						};
						curveNodesMap.set( curveNode.id, curveNode );

					}

				}

				return curveNodesMap;

			},
			// parse nodes in FBXTree.Objects.AnimationCurve and connect them up to
			// previously parsed AnimationCurveNodes. Each AnimationCurve holds data for a single animated
			// axis ( e.g. times and values of x rotation)
			parseAnimationCurves: function ( curveNodesMap ) {

				var rawCurves = fbxTree.Objects.AnimationCurve; // TODO: Many values are identical up to roundoff error, but won't be optimised
				// e.g. position times: [0, 0.4, 0. 8]
				// position values: [7.23538335023477e-7, 93.67518615722656, -0.9982695579528809, 7.23538335023477e-7, 93.67518615722656, -0.9982695579528809, 7.235384487103147e-7, 93.67520904541016, -0.9982695579528809]
				// clearly, this should be optimised to
				// times: [0], positions [7.23538335023477e-7, 93.67518615722656, -0.9982695579528809]
				// this shows up in nearly every FBX file, and generally time array is length > 100

				for ( var nodeID in rawCurves ) {

					var animationCurve = {
						id: rawCurves[ nodeID ].id,
						times: rawCurves[ nodeID ].KeyTime.a.map( convertFBXTimeToSeconds ),
						values: rawCurves[ nodeID ].KeyValueFloat.a
					};
					var relationships = connections.get( animationCurve.id );

					if ( relationships !== undefined ) {

						var animationCurveID = relationships.parents[ 0 ].ID;
						var animationCurveRelationship = relationships.parents[ 0 ].relationship;

						if ( animationCurveRelationship.match( /X/ ) ) {

							curveNodesMap.get( animationCurveID ).curves[ 'x' ] = animationCurve;

						} else if ( animationCurveRelationship.match( /Y/ ) ) {

							curveNodesMap.get( animationCurveID ).curves[ 'y' ] = animationCurve;

						} else if ( animationCurveRelationship.match( /Z/ ) ) {

							curveNodesMap.get( animationCurveID ).curves[ 'z' ] = animationCurve;

						} else if ( animationCurveRelationship.match( /d|DeformPercent/ ) && curveNodesMap.has( animationCurveID ) ) {

							curveNodesMap.get( animationCurveID ).curves[ 'morph' ] = animationCurve;

						}

					}

				}

			},
			// parse nodes in FBXTree.Objects.AnimationLayer. Each layers holds references
			// to various AnimationCurveNodes and is referenced by an AnimationStack node
			// note: theoretically a stack can have multiple layers, however in practice there always seems to be one per stack
			parseAnimationLayers: function ( curveNodesMap ) {

				var rawLayers = fbxTree.Objects.AnimationLayer;
				var layersMap = new Map();

				for ( var nodeID in rawLayers ) {

					var layerCurveNodes = [];
					var connection = connections.get( parseInt( nodeID ) );

					if ( connection !== undefined ) {

						// all the animationCurveNodes used in the layer
						var children = connection.children;
						children.forEach( function ( child, i ) {

							if ( curveNodesMap.has( child.ID ) ) {

								var curveNode = curveNodesMap.get( child.ID ); // check that the curves are defined for at least one axis, otherwise ignore the curveNode

								if ( curveNode.curves.x !== undefined || curveNode.curves.y !== undefined || curveNode.curves.z !== undefined ) {

									if ( layerCurveNodes[ i ] === undefined ) {

										var modelID = connections.get( child.ID ).parents.filter( function ( parent ) {

											return parent.relationship !== undefined;

										} )[ 0 ].ID;

										if ( modelID !== undefined ) {

											var rawModel = fbxTree.Objects.Model[ modelID.toString() ];

											if ( rawModel === undefined ) {

												console.warn( 'THREE.FBXLoader: Encountered a unused curve.', child );
												return;

											}

											var node = {
												modelName: rawModel.attrName ? THREE.PropertyBinding.sanitizeNodeName( rawModel.attrName ) : '',
												ID: rawModel.id,
												initialPosition: [ 0, 0, 0 ],
												initialRotation: [ 0, 0, 0 ],
												initialScale: [ 1, 1, 1 ]
											};
											sceneGraph.traverse( function ( child ) {

												if ( child.ID === rawModel.id ) {

													node.transform = child.matrix;
													if ( child.userData.transformData ) node.eulerOrder = child.userData.transformData.eulerOrder;

												}

											} );
											if ( ! node.transform ) node.transform = new THREE.Matrix4(); // if the animated model is pre rotated, we'll have to apply the pre rotations to every
											// animation value as well

											if ( 'PreRotation' in rawModel ) node.preRotation = rawModel.PreRotation.value;
											if ( 'PostRotation' in rawModel ) node.postRotation = rawModel.PostRotation.value;
											layerCurveNodes[ i ] = node;

										}

									}

									if ( layerCurveNodes[ i ] ) layerCurveNodes[ i ][ curveNode.attr ] = curveNode;

								} else if ( curveNode.curves.morph !== undefined ) {

									if ( layerCurveNodes[ i ] === undefined ) {

										var deformerID = connections.get( child.ID ).parents.filter( function ( parent ) {

											return parent.relationship !== undefined;

										} )[ 0 ].ID;
										var morpherID = connections.get( deformerID ).parents[ 0 ].ID;
										var geoID = connections.get( morpherID ).parents[ 0 ].ID; // assuming geometry is not used in more than one model

										var modelID = connections.get( geoID ).parents[ 0 ].ID;
										var rawModel = fbxTree.Objects.Model[ modelID ];
										var node = {
											modelName: rawModel.attrName ? THREE.PropertyBinding.sanitizeNodeName( rawModel.attrName ) : '',
											morphName: fbxTree.Objects.Deformer[ deformerID ].attrName
										};
										layerCurveNodes[ i ] = node;

									}

									layerCurveNodes[ i ][ curveNode.attr ] = curveNode;

								}

							}

						} );
						layersMap.set( parseInt( nodeID ), layerCurveNodes );

					}

				}

				return layersMap;

			},
			// parse nodes in FBXTree.Objects.AnimationStack. These are the top level node in the animation
			// hierarchy. Each Stack node will be used to create a THREE.AnimationClip
			parseAnimStacks: function ( layersMap ) {

				var rawStacks = fbxTree.Objects.AnimationStack; // connect the stacks (clips) up to the layers

				var rawClips = {};

				for ( var nodeID in rawStacks ) {

					var children = connections.get( parseInt( nodeID ) ).children;

					if ( children.length > 1 ) {

						// it seems like stacks will always be associated with a single layer. But just in case there are files
						// where there are multiple layers per stack, we'll display a warning
						console.warn( 'THREE.FBXLoader: Encountered an animation stack with multiple layers, this is currently not supported. Ignoring subsequent layers.' );

					}

					var layer = layersMap.get( children[ 0 ].ID );
					rawClips[ nodeID ] = {
						name: rawStacks[ nodeID ].attrName,
						layer: layer
					};

				}

				return rawClips;

			},
			addClip: function ( rawClip ) {

				var tracks = [];
				var scope = this;
				rawClip.layer.forEach( function ( rawTracks ) {

					tracks = tracks.concat( scope.generateTracks( rawTracks ) );

				} );
				return new THREE.AnimationClip( rawClip.name, - 1, tracks );

			},
			generateTracks: function ( rawTracks ) {

				var tracks = [];
				var initialPosition = new THREE.Vector3();
				var initialRotation = new THREE.Quaternion();
				var initialScale = new THREE.Vector3();
				if ( rawTracks.transform ) rawTracks.transform.decompose( initialPosition, initialRotation, initialScale );
				initialPosition = initialPosition.toArray();
				initialRotation = new THREE.Euler().setFromQuaternion( initialRotation, rawTracks.eulerOrder ).toArray();
				initialScale = initialScale.toArray();

				if ( rawTracks.T !== undefined && Object.keys( rawTracks.T.curves ).length > 0 ) {

					var positionTrack = this.generateVectorTrack( rawTracks.modelName, rawTracks.T.curves, initialPosition, 'position' );
					if ( positionTrack !== undefined ) tracks.push( positionTrack );

				}

				if ( rawTracks.R !== undefined && Object.keys( rawTracks.R.curves ).length > 0 ) {

					var rotationTrack = this.generateRotationTrack( rawTracks.modelName, rawTracks.R.curves, initialRotation, rawTracks.preRotation, rawTracks.postRotation, rawTracks.eulerOrder );
					if ( rotationTrack !== undefined ) tracks.push( rotationTrack );

				}

				if ( rawTracks.S !== undefined && Object.keys( rawTracks.S.curves ).length > 0 ) {

					var scaleTrack = this.generateVectorTrack( rawTracks.modelName, rawTracks.S.curves, initialScale, 'scale' );
					if ( scaleTrack !== undefined ) tracks.push( scaleTrack );

				}

				if ( rawTracks.DeformPercent !== undefined ) {

					var morphTrack = this.generateMorphTrack( rawTracks );
					if ( morphTrack !== undefined ) tracks.push( morphTrack );

				}

				return tracks;

			},
			generateVectorTrack: function ( modelName, curves, initialValue, type ) {

				var times = this.getTimesForAllAxes( curves );
				var values = this.getKeyframeTrackValues( times, curves, initialValue );
				return new THREE.VectorKeyframeTrack( modelName + '.' + type, times, values );

			},
			generateRotationTrack: function ( modelName, curves, initialValue, preRotation, postRotation, eulerOrder ) {

				if ( curves.x !== undefined ) {

					this.interpolateRotations( curves.x );
					curves.x.values = curves.x.values.map( THREE.MathUtils.degToRad );

				}

				if ( curves.y !== undefined ) {

					this.interpolateRotations( curves.y );
					curves.y.values = curves.y.values.map( THREE.MathUtils.degToRad );

				}

				if ( curves.z !== undefined ) {

					this.interpolateRotations( curves.z );
					curves.z.values = curves.z.values.map( THREE.MathUtils.degToRad );

				}

				var times = this.getTimesForAllAxes( curves );
				var values = this.getKeyframeTrackValues( times, curves, initialValue );

				if ( preRotation !== undefined ) {

					preRotation = preRotation.map( THREE.MathUtils.degToRad );
					preRotation.push( eulerOrder );
					preRotation = new THREE.Euler().fromArray( preRotation );
					preRotation = new THREE.Quaternion().setFromEuler( preRotation );

				}

				if ( postRotation !== undefined ) {

					postRotation = postRotation.map( THREE.MathUtils.degToRad );
					postRotation.push( eulerOrder );
					postRotation = new THREE.Euler().fromArray( postRotation );
					postRotation = new THREE.Quaternion().setFromEuler( postRotation ).invert();

				}

				var quaternion = new THREE.Quaternion();
				var euler = new THREE.Euler();
				var quaternionValues = [];

				for ( var i = 0; i < values.length; i += 3 ) {

					euler.set( values[ i ], values[ i + 1 ], values[ i + 2 ], eulerOrder );
					quaternion.setFromEuler( euler );
					if ( preRotation !== undefined ) quaternion.premultiply( preRotation );
					if ( postRotation !== undefined ) quaternion.multiply( postRotation );
					quaternion.toArray( quaternionValues, i / 3 * 4 );

				}

				return new THREE.QuaternionKeyframeTrack( modelName + '.quaternion', times, quaternionValues );

			},
			generateMorphTrack: function ( rawTracks ) {

				var curves = rawTracks.DeformPercent.curves.morph;
				var values = curves.values.map( function ( val ) {

					return val / 100;

				} );
				var morphNum = sceneGraph.getObjectByName( rawTracks.modelName ).morphTargetDictionary[ rawTracks.morphName ];
				return new THREE.NumberKeyframeTrack( rawTracks.modelName + '.morphTargetInfluences[' + morphNum + ']', curves.times, values );

			},
			// For all animated objects, times are defined separately for each axis
			// Here we'll combine the times into one sorted array without duplicates
			getTimesForAllAxes: function ( curves ) {

				var times = []; // first join together the times for each axis, if defined

				if ( curves.x !== undefined ) times = times.concat( curves.x.times );
				if ( curves.y !== undefined ) times = times.concat( curves.y.times );
				if ( curves.z !== undefined ) times = times.concat( curves.z.times ); // then sort them

				times = times.sort( function ( a, b ) {

					return a - b;

				} ); // and remove duplicates

				if ( times.length > 1 ) {

					var targetIndex = 1;
					var lastValue = times[ 0 ];

					for ( var i = 1; i < times.length; i ++ ) {

						var currentValue = times[ i ];

						if ( currentValue !== lastValue ) {

							times[ targetIndex ] = currentValue;
							lastValue = currentValue;
							targetIndex ++;

						}

					}

					times = times.slice( 0, targetIndex );

				}

				return times;

			},
			getKeyframeTrackValues: function ( times, curves, initialValue ) {

				var prevValue = initialValue;
				var values = [];
				var xIndex = - 1;
				var yIndex = - 1;
				var zIndex = - 1;
				times.forEach( function ( time ) {

					if ( curves.x ) xIndex = curves.x.times.indexOf( time );
					if ( curves.y ) yIndex = curves.y.times.indexOf( time );
					if ( curves.z ) zIndex = curves.z.times.indexOf( time ); // if there is an x value defined for this frame, use that

					if ( xIndex !== - 1 ) {

						var xValue = curves.x.values[ xIndex ];
						values.push( xValue );
						prevValue[ 0 ] = xValue;

					} else {

						// otherwise use the x value from the previous frame
						values.push( prevValue[ 0 ] );

					}

					if ( yIndex !== - 1 ) {

						var yValue = curves.y.values[ yIndex ];
						values.push( yValue );
						prevValue[ 1 ] = yValue;

					} else {

						values.push( prevValue[ 1 ] );

					}

					if ( zIndex !== - 1 ) {

						var zValue = curves.z.values[ zIndex ];
						values.push( zValue );
						prevValue[ 2 ] = zValue;

					} else {

						values.push( prevValue[ 2 ] );

					}

				} );
				return values;

			},
			// Rotations are defined as THREE.Euler angles which can have values	of any size
			// These will be converted to quaternions which don't support values greater than
			// PI, so we'll interpolate large rotations
			interpolateRotations: function ( curve ) {

				for ( var i = 1; i < curve.values.length; i ++ ) {

					var initialValue = curve.values[ i - 1 ];
					var valuesSpan = curve.values[ i ] - initialValue;
					var absoluteSpan = Math.abs( valuesSpan );

					if ( absoluteSpan >= 180 ) {

						var numSubIntervals = absoluteSpan / 180;
						var step = valuesSpan / numSubIntervals;
						var nextValue = initialValue + step;
						var initialTime = curve.times[ i - 1 ];
						var timeSpan = curve.times[ i ] - initialTime;
						var interval = timeSpan / numSubIntervals;
						var nextTime = initialTime + interval;
						var interpolatedTimes = [];
						var interpolatedValues = [];

						while ( nextTime < curve.times[ i ] ) {

							interpolatedTimes.push( nextTime );
							nextTime += interval;
							interpolatedValues.push( nextValue );
							nextValue += step;

						}

						curve.times = inject( curve.times, i, interpolatedTimes );
						curve.values = inject( curve.values, i, interpolatedValues );

					}

				}

			}
		}; // parse an FBX file in ASCII format

		function TextParser() {}

		TextParser.prototype = {
			constructor: TextParser,
			getPrevNode: function () {

				return this.nodeStack[ this.currentIndent - 2 ];

			},
			getCurrentNode: function () {

				return this.nodeStack[ this.currentIndent - 1 ];

			},
			getCurrentProp: function () {

				return this.currentProp;

			},
			pushStack: function ( node ) {

				this.nodeStack.push( node );
				this.currentIndent += 1;

			},
			popStack: function () {

				this.nodeStack.pop();
				this.currentIndent -= 1;

			},
			setCurrentProp: function ( val, name ) {

				this.currentProp = val;
				this.currentPropName = name;

			},
			parse: function ( text ) {

				this.currentIndent = 0;
				this.allNodes = new FBXTree();
				this.nodeStack = [];
				this.currentProp = [];
				this.currentPropName = '';
				var scope = this;
				var split = text.split( /[\r\n]+/ );
				split.forEach( function ( line, i ) {

					var matchComment = line.match( /^[\s\t]*;/ );
					var matchEmpty = line.match( /^[\s\t]*$/ );
					if ( matchComment || matchEmpty ) return;
					var matchBeginning = line.match( '^\\t{' + scope.currentIndent + '}(\\w+):(.*){', '' );
					var matchProperty = line.match( '^\\t{' + scope.currentIndent + '}(\\w+):[\\s\\t\\r\\n](.*)' );
					var matchEnd = line.match( '^\\t{' + ( scope.currentIndent - 1 ) + '}}' );

					if ( matchBeginning ) {

						scope.parseNodeBegin( line, matchBeginning );

					} else if ( matchProperty ) {

						scope.parseNodeProperty( line, matchProperty, split[ ++ i ] );

					} else if ( matchEnd ) {

						scope.popStack();

					} else if ( line.match( /^[^\s\t}]/ ) ) {

						// large arrays are split over multiple lines terminated with a ',' character
						// if this is encountered the line needs to be joined to the previous line
						scope.parseNodePropertyContinued( line );

					}

				} );
				return this.allNodes;

			},
			parseNodeBegin: function ( line, property ) {

				var nodeName = property[ 1 ].trim().replace( /^"/, '' ).replace( /"$/, '' );
				var nodeAttrs = property[ 2 ].split( ',' ).map( function ( attr ) {

					return attr.trim().replace( /^"/, '' ).replace( /"$/, '' );

				} );
				var node = {
					name: nodeName
				};
				var attrs = this.parseNodeAttr( nodeAttrs );
				var currentNode = this.getCurrentNode(); // a top node

				if ( this.currentIndent === 0 ) {

					this.allNodes.add( nodeName, node );

				} else {

					// a subnode
					// if the subnode already exists, append it
					if ( nodeName in currentNode ) {

						// special case Pose needs PoseNodes as an array
						if ( nodeName === 'PoseNode' ) {

							currentNode.PoseNode.push( node );

						} else if ( currentNode[ nodeName ].id !== undefined ) {

							currentNode[ nodeName ] = {};
							currentNode[ nodeName ][ currentNode[ nodeName ].id ] = currentNode[ nodeName ];

						}

						if ( attrs.id !== '' ) currentNode[ nodeName ][ attrs.id ] = node;

					} else if ( typeof attrs.id === 'number' ) {

						currentNode[ nodeName ] = {};
						currentNode[ nodeName ][ attrs.id ] = node;

					} else if ( nodeName !== 'Properties70' ) {

						if ( nodeName === 'PoseNode' ) currentNode[ nodeName ] = [ node ]; else currentNode[ nodeName ] = node;

					}

				}

				if ( typeof attrs.id === 'number' ) node.id = attrs.id;
				if ( attrs.name !== '' ) node.attrName = attrs.name;
				if ( attrs.type !== '' ) node.attrType = attrs.type;
				this.pushStack( node );

			},
			parseNodeAttr: function ( attrs ) {

				var id = attrs[ 0 ];

				if ( attrs[ 0 ] !== '' ) {

					id = parseInt( attrs[ 0 ] );

					if ( isNaN( id ) ) {

						id = attrs[ 0 ];

					}

				}

				var name = '',
					type = '';

				if ( attrs.length > 1 ) {

					name = attrs[ 1 ].replace( /^(\w+)::/, '' );
					type = attrs[ 2 ];

				}

				return {
					id: id,
					name: name,
					type: type
				};

			},
			parseNodeProperty: function ( line, property, contentLine ) {

				var propName = property[ 1 ].replace( /^"/, '' ).replace( /"$/, '' ).trim();
				var propValue = property[ 2 ].replace( /^"/, '' ).replace( /"$/, '' ).trim(); // for special case: base64 image data follows "Content: ," line
				//	Content: ,
				//	 "/9j/4RDaRXhpZgAATU0A..."

				if ( propName === 'Content' && propValue === ',' ) {

					propValue = contentLine.replace( /"/g, '' ).replace( /,$/, '' ).trim();

				}

				var currentNode = this.getCurrentNode();
				var parentName = currentNode.name;

				if ( parentName === 'Properties70' ) {

					this.parseNodeSpecialProperty( line, propName, propValue );
					return;

				} // Connections


				if ( propName === 'C' ) {

					var connProps = propValue.split( ',' ).slice( 1 );
					var from = parseInt( connProps[ 0 ] );
					var to = parseInt( connProps[ 1 ] );
					var rest = propValue.split( ',' ).slice( 3 );
					rest = rest.map( function ( elem ) {

						return elem.trim().replace( /^"/, '' );

					} );
					propName = 'connections';
					propValue = [ from, to ];
					append( propValue, rest );

					if ( currentNode[ propName ] === undefined ) {

						currentNode[ propName ] = [];

					}

				} // Node


				if ( propName === 'Node' ) currentNode.id = propValue; // connections

				if ( propName in currentNode && Array.isArray( currentNode[ propName ] ) ) {

					currentNode[ propName ].push( propValue );

				} else {

					if ( propName !== 'a' ) currentNode[ propName ] = propValue; else currentNode.a = propValue;

				}

				this.setCurrentProp( currentNode, propName ); // convert string to array, unless it ends in ',' in which case more will be added to it

				if ( propName === 'a' && propValue.slice( - 1 ) !== ',' ) {

					currentNode.a = parseNumberArray( propValue );

				}

			},
			parseNodePropertyContinued: function ( line ) {

				var currentNode = this.getCurrentNode();
				currentNode.a += line; // if the line doesn't end in ',' we have reached the end of the property value
				// so convert the string to an array

				if ( line.slice( - 1 ) !== ',' ) {

					currentNode.a = parseNumberArray( currentNode.a );

				}

			},
			// parse "Property70"
			parseNodeSpecialProperty: function ( line, propName, propValue ) {

				// split this
				// P: "Lcl Scaling", "Lcl Scaling", "", "A",1,1,1
				// into array like below
				// ["Lcl Scaling", "Lcl Scaling", "", "A", "1,1,1" ]
				var props = propValue.split( '",' ).map( function ( prop ) {

					return prop.trim().replace( /^\"/, '' ).replace( /\s/, '_' );

				} );
				var innerPropName = props[ 0 ];
				var innerPropType1 = props[ 1 ];
				var innerPropType2 = props[ 2 ];
				var innerPropFlag = props[ 3 ];
				var innerPropValue = props[ 4 ]; // cast values where needed, otherwise leave as strings

				switch ( innerPropType1 ) {

					case 'int':
					case 'enum':
					case 'bool':
					case 'ULongLong':
					case 'double':
					case 'Number':
					case 'FieldOfView':
						innerPropValue = parseFloat( innerPropValue );
						break;

					case 'Color':
					case 'ColorRGB':
					case 'Vector3D':
					case 'Lcl_Translation':
					case 'Lcl_Rotation':
					case 'Lcl_Scaling':
						innerPropValue = parseNumberArray( innerPropValue );
						break;

				} // CAUTION: these props must append to parent's parent


				this.getPrevNode()[ innerPropName ] = {
					'type': innerPropType1,
					'type2': innerPropType2,
					'flag': innerPropFlag,
					'value': innerPropValue
				};
				this.setCurrentProp( this.getPrevNode(), innerPropName );

			}
		}; // Parse an FBX file in Binary format

		function BinaryParser() {}

		BinaryParser.prototype = {
			constructor: BinaryParser,
			parse: function ( buffer ) {

				var reader = new BinaryReader( buffer );
				reader.skip( 23 ); // skip magic 23 bytes

				var version = reader.getUint32();

				if ( version < 6400 ) {

					throw new Error( 'THREE.FBXLoader: FBX version not supported, FileVersion: ' + version );

				}

				var allNodes = new FBXTree();

				while ( ! this.endOfContent( reader ) ) {

					var node = this.parseNode( reader, version );
					if ( node !== null ) allNodes.add( node.name, node );

				}

				return allNodes;

			},
			// Check if reader has reached the end of content.
			endOfContent: function ( reader ) {

				// footer size: 160bytes + 16-byte alignment padding
				// - 16bytes: magic
				// - padding til 16-byte alignment (at least 1byte?)
				//	(seems like some exporters embed fixed 15 or 16bytes?)
				// - 4bytes: magic
				// - 4bytes: version
				// - 120bytes: zero
				// - 16bytes: magic
				if ( reader.size() % 16 === 0 ) {

					return ( reader.getOffset() + 160 + 16 & ~ 0xf ) >= reader.size();

				} else {

					return reader.getOffset() + 160 + 16 >= reader.size();

				}

			},
			// recursively parse nodes until the end of the file is reached
			parseNode: function ( reader, version ) {

				var node = {}; // The first three data sizes depends on version.

				var endOffset = version >= 7500 ? reader.getUint64() : reader.getUint32();
				var numProperties = version >= 7500 ? reader.getUint64() : reader.getUint32();
				version >= 7500 ? reader.getUint64() : reader.getUint32(); // the returned propertyListLen is not used

				var nameLen = reader.getUint8();
				var name = reader.getString( nameLen ); // Regards this node as NULL-record if endOffset is zero

				if ( endOffset === 0 ) return null;
				var propertyList = [];

				for ( var i = 0; i < numProperties; i ++ ) {

					propertyList.push( this.parseProperty( reader ) );

				} // Regards the first three elements in propertyList as id, attrName, and attrType


				var id = propertyList.length > 0 ? propertyList[ 0 ] : '';
				var attrName = propertyList.length > 1 ? propertyList[ 1 ] : '';
				var attrType = propertyList.length > 2 ? propertyList[ 2 ] : ''; // check if this node represents just a single property
				// like (name, 0) set or (name2, [0, 1, 2]) set of {name: 0, name2: [0, 1, 2]}

				node.singleProperty = numProperties === 1 && reader.getOffset() === endOffset ? true : false;

				while ( endOffset > reader.getOffset() ) {

					var subNode = this.parseNode( reader, version );
					if ( subNode !== null ) this.parseSubNode( name, node, subNode );

				}

				node.propertyList = propertyList; // raw property list used by parent

				if ( typeof id === 'number' ) node.id = id;
				if ( attrName !== '' ) node.attrName = attrName;
				if ( attrType !== '' ) node.attrType = attrType;
				if ( name !== '' ) node.name = name;
				return node;

			},
			parseSubNode: function ( name, node, subNode ) {

				// special case: child node is single property
				if ( subNode.singleProperty === true ) {

					var value = subNode.propertyList[ 0 ];

					if ( Array.isArray( value ) ) {

						node[ subNode.name ] = subNode;
						subNode.a = value;

					} else {

						node[ subNode.name ] = value;

					}

				} else if ( name === 'Connections' && subNode.name === 'C' ) {

					var array = [];
					subNode.propertyList.forEach( function ( property, i ) {

						// first Connection is FBX type (OO, OP, etc.). We'll discard these
						if ( i !== 0 ) array.push( property );

					} );

					if ( node.connections === undefined ) {

						node.connections = [];

					}

					node.connections.push( array );

				} else if ( subNode.name === 'Properties70' ) {

					var keys = Object.keys( subNode );
					keys.forEach( function ( key ) {

						node[ key ] = subNode[ key ];

					} );

				} else if ( name === 'Properties70' && subNode.name === 'P' ) {

					var innerPropName = subNode.propertyList[ 0 ];
					var innerPropType1 = subNode.propertyList[ 1 ];
					var innerPropType2 = subNode.propertyList[ 2 ];
					var innerPropFlag = subNode.propertyList[ 3 ];
					var innerPropValue;
					if ( innerPropName.indexOf( 'Lcl ' ) === 0 ) innerPropName = innerPropName.replace( 'Lcl ', 'Lcl_' );
					if ( innerPropType1.indexOf( 'Lcl ' ) === 0 ) innerPropType1 = innerPropType1.replace( 'Lcl ', 'Lcl_' );

					if ( innerPropType1 === 'Color' || innerPropType1 === 'ColorRGB' || innerPropType1 === 'Vector' || innerPropType1 === 'Vector3D' || innerPropType1.indexOf( 'Lcl_' ) === 0 ) {

						innerPropValue = [ subNode.propertyList[ 4 ], subNode.propertyList[ 5 ], subNode.propertyList[ 6 ] ];

					} else {

						innerPropValue = subNode.propertyList[ 4 ];

					} // this will be copied to parent, see above


					node[ innerPropName ] = {
						'type': innerPropType1,
						'type2': innerPropType2,
						'flag': innerPropFlag,
						'value': innerPropValue
					};

				} else if ( node[ subNode.name ] === undefined ) {

					if ( typeof subNode.id === 'number' ) {

						node[ subNode.name ] = {};
						node[ subNode.name ][ subNode.id ] = subNode;

					} else {

						node[ subNode.name ] = subNode;

					}

				} else {

					if ( subNode.name === 'PoseNode' ) {

						if ( ! Array.isArray( node[ subNode.name ] ) ) {

							node[ subNode.name ] = [ node[ subNode.name ] ];

						}

						node[ subNode.name ].push( subNode );

					} else if ( node[ subNode.name ][ subNode.id ] === undefined ) {

						node[ subNode.name ][ subNode.id ] = subNode;

					}

				}

			},
			parseProperty: function ( reader ) {

				var type = reader.getString( 1 );

				switch ( type ) {

					case 'C':
						return reader.getBoolean();

					case 'D':
						return reader.getFloat64();

					case 'F':
						return reader.getFloat32();

					case 'I':
						return reader.getInt32();

					case 'L':
						return reader.getInt64();

					case 'R':
						var length = reader.getUint32();
						return reader.getArrayBuffer( length );

					case 'S':
						var length = reader.getUint32();
						return reader.getString( length );

					case 'Y':
						return reader.getInt16();

					case 'b':
					case 'c':
					case 'd':
					case 'f':
					case 'i':
					case 'l':
						var arrayLength = reader.getUint32();
						var encoding = reader.getUint32(); // 0: non-compressed, 1: compressed

						var compressedLength = reader.getUint32();

						if ( encoding === 0 ) {

							switch ( type ) {

								case 'b':
								case 'c':
									return reader.getBooleanArray( arrayLength );

								case 'd':
									return reader.getFloat64Array( arrayLength );

								case 'f':
									return reader.getFloat32Array( arrayLength );

								case 'i':
									return reader.getInt32Array( arrayLength );

								case 'l':
									return reader.getInt64Array( arrayLength );

							}

						}

						if ( typeof fflate === 'undefined' ) {

							console.error( 'THREE.FBXLoader: External library fflate.min.js required.' );

						}

						var data = fflate.unzlibSync( new Uint8Array( reader.getArrayBuffer( compressedLength ) ) ); // eslint-disable-line no-undef

						var reader2 = new BinaryReader( data.buffer );

						switch ( type ) {

							case 'b':
							case 'c':
								return reader2.getBooleanArray( arrayLength );

							case 'd':
								return reader2.getFloat64Array( arrayLength );

							case 'f':
								return reader2.getFloat32Array( arrayLength );

							case 'i':
								return reader2.getInt32Array( arrayLength );

							case 'l':
								return reader2.getInt64Array( arrayLength );

						}

					default:
						throw new Error( 'THREE.FBXLoader: Unknown property type ' + type );

				}

			}
		};

		function BinaryReader( buffer, littleEndian ) {

			this.dv = new DataView( buffer );
			this.offset = 0;
			this.littleEndian = littleEndian !== undefined ? littleEndian : true;

		}

		BinaryReader.prototype = {
			constructor: BinaryReader,
			getOffset: function () {

				return this.offset;

			},
			size: function () {

				return this.dv.buffer.byteLength;

			},
			skip: function ( length ) {

				this.offset += length;

			},
			// seems like true/false representation depends on exporter.
			// true: 1 or 'Y'(=0x59), false: 0 or 'T'(=0x54)
			// then sees LSB.
			getBoolean: function () {

				return ( this.getUint8() & 1 ) === 1;

			},
			getBooleanArray: function ( size ) {

				var a = [];

				for ( var i = 0; i < size; i ++ ) {

					a.push( this.getBoolean() );

				}

				return a;

			},
			getUint8: function () {

				var value = this.dv.getUint8( this.offset );
				this.offset += 1;
				return value;

			},
			getInt16: function () {

				var value = this.dv.getInt16( this.offset, this.littleEndian );
				this.offset += 2;
				return value;

			},
			getInt32: function () {

				var value = this.dv.getInt32( this.offset, this.littleEndian );
				this.offset += 4;
				return value;

			},
			getInt32Array: function ( size ) {

				var a = [];

				for ( var i = 0; i < size; i ++ ) {

					a.push( this.getInt32() );

				}

				return a;

			},
			getUint32: function () {

				var value = this.dv.getUint32( this.offset, this.littleEndian );
				this.offset += 4;
				return value;

			},
			// JavaScript doesn't support 64-bit integer so calculate this here
			// 1 << 32 will return 1 so using multiply operation instead here.
			// There's a possibility that this method returns wrong value if the value
			// is out of the range between Number.MAX_SAFE_INTEGER and Number.MIN_SAFE_INTEGER.
			// TODO: safely handle 64-bit integer
			getInt64: function () {

				var low, high;

				if ( this.littleEndian ) {

					low = this.getUint32();
					high = this.getUint32();

				} else {

					high = this.getUint32();
					low = this.getUint32();

				} // calculate negative value


				if ( high & 0x80000000 ) {

					high = ~ high & 0xFFFFFFFF;
					low = ~ low & 0xFFFFFFFF;
					if ( low === 0xFFFFFFFF ) high = high + 1 & 0xFFFFFFFF;
					low = low + 1 & 0xFFFFFFFF;
					return - ( high * 0x100000000 + low );

				}

				return high * 0x100000000 + low;

			},
			getInt64Array: function ( size ) {

				var a = [];

				for ( var i = 0; i < size; i ++ ) {

					a.push( this.getInt64() );

				}

				return a;

			},
			// Note: see getInt64() comment
			getUint64: function () {

				var low, high;

				if ( this.littleEndian ) {

					low = this.getUint32();
					high = this.getUint32();

				} else {

					high = this.getUint32();
					low = this.getUint32();

				}

				return high * 0x100000000 + low;

			},
			getFloat32: function () {

				var value = this.dv.getFloat32( this.offset, this.littleEndian );
				this.offset += 4;
				return value;

			},
			getFloat32Array: function ( size ) {

				var a = [];

				for ( var i = 0; i < size; i ++ ) {

					a.push( this.getFloat32() );

				}

				return a;

			},
			getFloat64: function () {

				var value = this.dv.getFloat64( this.offset, this.littleEndian );
				this.offset += 8;
				return value;

			},
			getFloat64Array: function ( size ) {

				var a = [];

				for ( var i = 0; i < size; i ++ ) {

					a.push( this.getFloat64() );

				}

				return a;

			},
			getArrayBuffer: function ( size ) {

				var value = this.dv.buffer.slice( this.offset, this.offset + size );
				this.offset += size;
				return value;

			},
			getString: function ( size ) {

				// note: safari 9 doesn't support Uint8Array.indexOf; create intermediate array instead
				var a = [];

				for ( var i = 0; i < size; i ++ ) {

					a[ i ] = this.getUint8();

				}

				var nullByte = a.indexOf( 0 );
				if ( nullByte >= 0 ) a = a.slice( 0, nullByte );
				return THREE.LoaderUtils.decodeText( new Uint8Array( a ) );

			}
		}; // FBXTree holds a representation of the FBX data, returned by the TextParser ( FBX ASCII format)
		// and BinaryParser( FBX Binary format)

		function FBXTree() {}

		FBXTree.prototype = {
			constructor: FBXTree,
			add: function ( key, val ) {

				this[ key ] = val;

			}
		}; // ************** UTILITY FUNCTIONS **************

		function isFbxFormatBinary( buffer ) {

			var CORRECT = 'Kaydara FBX Binary	\0';
			return buffer.byteLength >= CORRECT.length && CORRECT === convertArrayBufferToString( buffer, 0, CORRECT.length );

		}

		function isFbxFormatASCII( text ) {

			var CORRECT = [ 'K', 'a', 'y', 'd', 'a', 'r', 'a', '\\', 'F', 'B', 'X', '\\', 'B', 'i', 'n', 'a', 'r', 'y', '\\', '\\' ];
			var cursor = 0;

			function read( offset ) {

				var result = text[ offset - 1 ];
				text = text.slice( cursor + offset );
				cursor ++;
				return result;

			}

			for ( var i = 0; i < CORRECT.length; ++ i ) {

				var num = read( 1 );

				if ( num === CORRECT[ i ] ) {

					return false;

				}

			}

			return true;

		}

		function getFbxVersion( text ) {

			var versionRegExp = /FBXVersion: (\d+)/;
			var match = text.match( versionRegExp );

			if ( match ) {

				var version = parseInt( match[ 1 ] );
				return version;

			}

			throw new Error( 'THREE.FBXLoader: Cannot find the version number for the file given.' );

		} // Converts FBX ticks into real time seconds.


		function convertFBXTimeToSeconds( time ) {

			return time / 46186158000;

		}

		var dataArray = []; // extracts the data from the correct position in the FBX array based on indexing type

		function getData( polygonVertexIndex, polygonIndex, vertexIndex, infoObject ) {

			var index;

			switch ( infoObject.mappingType ) {

				case 'ByPolygonVertex':
					index = polygonVertexIndex;
					break;

				case 'ByPolygon':
					index = polygonIndex;
					break;

				case 'ByVertice':
					index = vertexIndex;
					break;

				case 'AllSame':
					index = infoObject.indices[ 0 ];
					break;

				default:
					console.warn( 'THREE.FBXLoader: unknown attribute mapping type ' + infoObject.mappingType );

			}

			if ( infoObject.referenceType === 'IndexToDirect' ) index = infoObject.indices[ index ];
			var from = index * infoObject.dataSize;
			var to = from + infoObject.dataSize;
			return slice( dataArray, infoObject.buffer, from, to );

		}

		var tempEuler = new THREE.Euler();
		var tempVec = new THREE.Vector3(); // generate transformation from FBX transform data
		// ref: https://help.autodesk.com/view/FBX/2017/ENU/?guid=__files_GUID_10CDD63C_79C1_4F2D_BB28_AD2BE65A02ED_htm
		// ref: http://docs.autodesk.com/FBX/2014/ENU/FBX-SDK-Documentation/index.html?url=cpp_ref/_transformations_2main_8cxx-example.html,topicNumber=cpp_ref__transformations_2main_8cxx_example_htmlfc10a1e1-b18d-4e72-9dc0-70d0f1959f5e

		function generateTransform( transformData ) {

			var lTranslationM = new THREE.Matrix4();
			var lPreRotationM = new THREE.Matrix4();
			var lRotationM = new THREE.Matrix4();
			var lPostRotationM = new THREE.Matrix4();
			var lScalingM = new THREE.Matrix4();
			var lScalingPivotM = new THREE.Matrix4();
			var lScalingOffsetM = new THREE.Matrix4();
			var lRotationOffsetM = new THREE.Matrix4();
			var lRotationPivotM = new THREE.Matrix4();
			var lParentGX = new THREE.Matrix4();
			var lParentLX = new THREE.Matrix4();
			var lGlobalT = new THREE.Matrix4();
			var inheritType = transformData.inheritType ? transformData.inheritType : 0;
			if ( transformData.translation ) lTranslationM.setPosition( tempVec.fromArray( transformData.translation ) );

			if ( transformData.preRotation ) {

				var array = transformData.preRotation.map( THREE.MathUtils.degToRad );
				array.push( transformData.eulerOrder );
				lPreRotationM.makeRotationFromEuler( tempEuler.fromArray( array ) );

			}

			if ( transformData.rotation ) {

				var array = transformData.rotation.map( THREE.MathUtils.degToRad );
				array.push( transformData.eulerOrder );
				lRotationM.makeRotationFromEuler( tempEuler.fromArray( array ) );

			}

			if ( transformData.postRotation ) {

				var array = transformData.postRotation.map( THREE.MathUtils.degToRad );
				array.push( transformData.eulerOrder );
				lPostRotationM.makeRotationFromEuler( tempEuler.fromArray( array ) );
				lPostRotationM.invert();

			}

			if ( transformData.scale ) lScalingM.scale( tempVec.fromArray( transformData.scale ) ); // Pivots and offsets

			if ( transformData.scalingOffset ) lScalingOffsetM.setPosition( tempVec.fromArray( transformData.scalingOffset ) );
			if ( transformData.scalingPivot ) lScalingPivotM.setPosition( tempVec.fromArray( transformData.scalingPivot ) );
			if ( transformData.rotationOffset ) lRotationOffsetM.setPosition( tempVec.fromArray( transformData.rotationOffset ) );
			if ( transformData.rotationPivot ) lRotationPivotM.setPosition( tempVec.fromArray( transformData.rotationPivot ) ); // parent transform

			if ( transformData.parentMatrixWorld ) {

				lParentLX.copy( transformData.parentMatrix );
				lParentGX.copy( transformData.parentMatrixWorld );

			}

			var lLRM = new THREE.Matrix4().copy( lPreRotationM ).multiply( lRotationM ).multiply( lPostRotationM ); // Global Rotation

			var lParentGRM = new THREE.Matrix4();
			lParentGRM.extractRotation( lParentGX ); // Global Shear*Scaling

			var lParentTM = new THREE.Matrix4();
			lParentTM.copyPosition( lParentGX );
			var lParentGSM = new THREE.Matrix4();
			var lParentGRSM = new THREE.Matrix4().copy( lParentTM ).invert().multiply( lParentGX );
			lParentGSM.copy( lParentGRM ).invert().multiply( lParentGRSM );
			var lLSM = lScalingM;
			var lGlobalRS = new THREE.Matrix4();

			if ( inheritType === 0 ) {

				lGlobalRS.copy( lParentGRM ).multiply( lLRM ).multiply( lParentGSM ).multiply( lLSM );

			} else if ( inheritType === 1 ) {

				lGlobalRS.copy( lParentGRM ).multiply( lParentGSM ).multiply( lLRM ).multiply( lLSM );

			} else {

				var lParentLSM = new THREE.Matrix4().scale( new THREE.Vector3().setFromMatrixScale( lParentLX ) );
				var lParentLSM_inv = new THREE.Matrix4().copy( lParentLSM ).invert();
				var lParentGSM_noLocal = new THREE.Matrix4().copy( lParentGSM ).multiply( lParentLSM_inv );
				lGlobalRS.copy( lParentGRM ).multiply( lLRM ).multiply( lParentGSM_noLocal ).multiply( lLSM );

			}

			var lRotationPivotM_inv = new THREE.Matrix4();
			lRotationPivotM_inv.copy( lRotationPivotM ).invert();
			var lScalingPivotM_inv = new THREE.Matrix4();
			lScalingPivotM_inv.copy( lScalingPivotM ).invert(); // Calculate the local transform matrix

			var lTransform = new THREE.Matrix4();
			lTransform.copy( lTranslationM ).multiply( lRotationOffsetM ).multiply( lRotationPivotM ).multiply( lPreRotationM ).multiply( lRotationM ).multiply( lPostRotationM ).multiply( lRotationPivotM_inv ).multiply( lScalingOffsetM ).multiply( lScalingPivotM ).multiply( lScalingM ).multiply( lScalingPivotM_inv );
			var lLocalTWithAllPivotAndOffsetInfo = new THREE.Matrix4().copyPosition( lTransform );
			var lGlobalTranslation = new THREE.Matrix4().copy( lParentGX ).multiply( lLocalTWithAllPivotAndOffsetInfo );
			lGlobalT.copyPosition( lGlobalTranslation );
			lTransform = new THREE.Matrix4().copy( lGlobalT ).multiply( lGlobalRS ); // from global to local

			lTransform.premultiply( lParentGX.invert() );
			return lTransform;

		} // Returns the three.js intrinsic THREE.Euler order corresponding to FBX extrinsic THREE.Euler order
		// ref: http://help.autodesk.com/view/FBX/2017/ENU/?guid=__cpp_ref_class_fbx_euler_html


		function getEulerOrder( order ) {

			order = order || 0;
			var enums = [ 'ZYX', // -> XYZ extrinsic
				'YZX', // -> XZY extrinsic
				'XZY', // -> YZX extrinsic
				'ZXY', // -> YXZ extrinsic
				'YXZ', // -> ZXY extrinsic
				'XYZ' // -> ZYX extrinsic
				//'SphericXYZ', // not possible to support
			];

			if ( order === 6 ) {

				console.warn( 'THREE.FBXLoader: unsupported THREE.Euler Order: Spherical XYZ. Animations and rotations may be incorrect.' );
				return enums[ 0 ];

			}

			return enums[ order ];

		} // Parses comma separated list of numbers and returns them an array.
		// Used internally by the TextParser


		function parseNumberArray( value ) {

			var array = value.split( ',' ).map( function ( val ) {

				return parseFloat( val );

			} );
			return array;

		}

		function convertArrayBufferToString( buffer, from, to ) {

			if ( from === undefined ) from = 0;
			if ( to === undefined ) to = buffer.byteLength;
			return THREE.LoaderUtils.decodeText( new Uint8Array( buffer, from, to ) );

		}

		function append( a, b ) {

			for ( var i = 0, j = a.length, l = b.length; i < l; i ++, j ++ ) {

				a[ j ] = b[ i ];

			}

		}

		function slice( a, b, from, to ) {

			for ( var i = from, j = 0; i < to; i ++, j ++ ) {

				a[ j ] = b[ i ];

			}

			return a;

		} // inject array a2 into array a1 at index


		function inject( a1, index, a2 ) {

			return a1.slice( 0, index ).concat( a2 ).concat( a1.slice( index ) );

		}

		return FBXLoader;

	}();

	THREE.FBXLoader = FBXLoader;

} )();