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- {"ast":null,"code":"import \"core-js/modules/es.array.push.js\";\nimport \"core-js/modules/es.typed-array.to-reversed.js\";\nimport \"core-js/modules/es.typed-array.to-sorted.js\";\nimport \"core-js/modules/es.typed-array.with.js\";\nimport \"core-js/modules/web.url-search-params.delete.js\";\nimport \"core-js/modules/web.url-search-params.has.js\";\nimport \"core-js/modules/web.url-search-params.size.js\";\nimport { AmbientLight, AnimationClip, Bone, BufferGeometry, ClampToEdgeWrapping, Color, DirectionalLight, EquirectangularReflectionMapping, Euler, FileLoader, Float32BufferAttribute, Group, Line, LineBasicMaterial, Loader, LoaderUtils, MathUtils, Matrix3, Matrix4, Mesh, MeshLambertMaterial, MeshPhongMaterial, NumberKeyframeTrack, Object3D, OrthographicCamera, PerspectiveCamera, PointLight, PropertyBinding, Quaternion, QuaternionKeyframeTrack, RepeatWrapping, Skeleton, SkinnedMesh, SpotLight, Texture, TextureLoader, Uint16BufferAttribute, Vector3, Vector4, VectorKeyframeTrack, SRGBColorSpace } from \"three\";\nimport * as fflate from \"../public/libs/fflate.module\";\nimport { NURBSCurve } from \"../public/curves/NURBSCurve.js\";\n\n/**\n * Loader loads FBX file and generates Group representing FBX scene.\n * Requires FBX file to be >= 7.0 and in ASCII or >= 6400 in Binary format\n * Versions lower than this may load but will probably have errors\n *\n * Needs Support:\n * Morph normals / blend shape normals\n *\n * FBX format references:\n * \thttps://help.autodesk.com/view/FBX/2017/ENU/?guid=__cpp_ref_index_html (C++ SDK reference)\n *\n * Binary format specification:\n *\thttps://code.blender.org/2013/08/fbx-binary-file-format-specification/\n */\n\nlet fbxTree;\nlet connections;\nlet sceneGraph;\nclass FBXLoader extends Loader {\n constructor(manager) {\n super(manager);\n }\n load(url, onLoad, onProgress, onError) {\n const scope = this;\n const path = scope.path === \"\" ? LoaderUtils.extractUrlBase(url) : scope.path;\n const loader = new FileLoader(this.manager);\n loader.setPath(scope.path);\n loader.setResponseType(\"arraybuffer\");\n loader.setRequestHeader(scope.requestHeader);\n loader.setWithCredentials(scope.withCredentials);\n loader.load(url, function (buffer) {\n try {\n onLoad(scope.parse(buffer, path));\n } catch (e) {\n if (onError) {\n onError(e);\n } else {\n console.error(e);\n }\n scope.manager.itemError(url);\n }\n }, onProgress, onError);\n }\n parse(FBXBuffer, path) {\n if (isFbxFormatBinary(FBXBuffer)) {\n fbxTree = new BinaryParser().parse(FBXBuffer);\n } else {\n const FBXText = convertArrayBufferToString(FBXBuffer);\n if (!isFbxFormatASCII(FBXText)) {\n throw new Error(\"THREE.FBXLoader: Unknown format.\");\n }\n if (getFbxVersion(FBXText) < 7000) {\n throw new Error(\"THREE.FBXLoader: FBX version not supported, FileVersion: \" + getFbxVersion(FBXText));\n }\n fbxTree = new TextParser().parse(FBXText);\n }\n\n // console.log( fbxTree );\n\n const textureLoader = new TextureLoader(this.manager).setPath(this.resourcePath || path).setCrossOrigin(this.crossOrigin);\n return new FBXTreeParser(textureLoader, this.manager).parse(fbxTree);\n }\n}\n\n// Parse the FBXTree object returned by the BinaryParser or TextParser and return a Group\nclass FBXTreeParser {\n constructor(textureLoader, manager) {\n this.textureLoader = textureLoader;\n this.manager = manager;\n }\n parse() {\n connections = this.parseConnections();\n const images = this.parseImages();\n const textures = this.parseTextures(images);\n const materials = this.parseMaterials(textures);\n const deformers = this.parseDeformers();\n const geometryMap = new GeometryParser().parse(deformers);\n this.parseScene(deformers, geometryMap, materials);\n return sceneGraph;\n }\n\n // Parses FBXTree.Connections which holds parent-child connections between objects (e.g. material -> texture, model->geometry )\n // and details the connection type\n parseConnections() {\n const connectionMap = new Map();\n if (\"Connections\" in fbxTree) {\n const rawConnections = fbxTree.Connections.connections;\n rawConnections.forEach(function (rawConnection) {\n const fromID = rawConnection[0];\n const toID = rawConnection[1];\n const relationship = rawConnection[2];\n if (!connectionMap.has(fromID)) {\n connectionMap.set(fromID, {\n parents: [],\n children: []\n });\n }\n const parentRelationship = {\n ID: toID,\n relationship: relationship\n };\n connectionMap.get(fromID).parents.push(parentRelationship);\n if (!connectionMap.has(toID)) {\n connectionMap.set(toID, {\n parents: [],\n children: []\n });\n }\n const childRelationship = {\n ID: fromID,\n relationship: relationship\n };\n connectionMap.get(toID).children.push(childRelationship);\n });\n }\n return connectionMap;\n }\n\n // Parse FBXTree.Objects.Video for embedded image data\n // These images are connected to textures in FBXTree.Objects.Textures\n // via FBXTree.Connections.\n parseImages() {\n const images = {};\n const blobs = {};\n if (\"Video\" in fbxTree.Objects) {\n const videoNodes = fbxTree.Objects.Video;\n for (const nodeID in videoNodes) {\n const videoNode = videoNodes[nodeID];\n const id = parseInt(nodeID);\n images[id] = videoNode.RelativeFilename || videoNode.Filename;\n\n // raw image data is in videoNode.Content\n if (\"Content\" in videoNode) {\n const arrayBufferContent = videoNode.Content instanceof ArrayBuffer && videoNode.Content.byteLength > 0;\n const base64Content = typeof videoNode.Content === \"string\" && videoNode.Content !== \"\";\n if (arrayBufferContent || base64Content) {\n const image = this.parseImage(videoNodes[nodeID]);\n blobs[videoNode.RelativeFilename || videoNode.Filename] = image;\n }\n }\n }\n }\n for (const id in images) {\n const filename = images[id];\n if (blobs[filename] !== undefined) images[id] = blobs[filename];else images[id] = images[id].split(\"\\\\\").pop();\n }\n return images;\n }\n\n // Parse embedded image data in FBXTree.Video.Content\n parseImage(videoNode) {\n const content = videoNode.Content;\n const fileName = videoNode.RelativeFilename || videoNode.Filename;\n const extension = fileName.slice(fileName.lastIndexOf(\".\") + 1).toLowerCase();\n let type;\n switch (extension) {\n case \"bmp\":\n type = \"image/bmp\";\n break;\n case \"jpg\":\n case \"jpeg\":\n type = \"image/jpeg\";\n break;\n case \"png\":\n type = \"image/png\";\n break;\n case \"tif\":\n type = \"image/tiff\";\n break;\n case \"tga\":\n if (this.manager.getHandler(\".tga\") === null) {\n console.warn(\"FBXLoader: TGA loader not found, skipping \", fileName);\n }\n type = \"image/tga\";\n break;\n default:\n console.warn('FBXLoader: Image type \"' + extension + '\" is not supported.');\n return;\n }\n if (typeof content === \"string\") {\n // ASCII format\n\n return \"data:\" + type + \";base64,\" + content;\n } else {\n // Binary Format\n\n const array = new Uint8Array(content);\n return window.URL.createObjectURL(new Blob([array], {\n type: type\n }));\n }\n }\n\n // Parse nodes in FBXTree.Objects.Texture\n // These contain details such as UV scaling, cropping, rotation etc and are connected\n // to images in FBXTree.Objects.Video\n parseTextures(images) {\n const textureMap = new Map();\n if (\"Texture\" in fbxTree.Objects) {\n const textureNodes = fbxTree.Objects.Texture;\n for (const nodeID in textureNodes) {\n const texture = this.parseTexture(textureNodes[nodeID], images);\n textureMap.set(parseInt(nodeID), texture);\n }\n }\n return textureMap;\n }\n\n // Parse individual node in FBXTree.Objects.Texture\n parseTexture(textureNode, images) {\n const texture = this.loadTexture(textureNode, images);\n texture.ID = textureNode.id;\n texture.name = textureNode.attrName;\n const wrapModeU = textureNode.WrapModeU;\n const wrapModeV = textureNode.WrapModeV;\n const valueU = wrapModeU !== undefined ? wrapModeU.value : 0;\n const valueV = wrapModeV !== undefined ? wrapModeV.value : 0;\n\n // http://download.autodesk.com/us/fbx/SDKdocs/FBX_SDK_Help/files/fbxsdkref/class_k_fbx_texture.html#889640e63e2e681259ea81061b85143a\n // 0: repeat(default), 1: clamp\n\n texture.wrapS = valueU === 0 ? RepeatWrapping : ClampToEdgeWrapping;\n texture.wrapT = valueV === 0 ? RepeatWrapping : ClampToEdgeWrapping;\n if (\"Scaling\" in textureNode) {\n const values = textureNode.Scaling.value;\n texture.repeat.x = values[0];\n texture.repeat.y = values[1];\n }\n if (\"Translation\" in textureNode) {\n const values = textureNode.Translation.value;\n texture.offset.x = values[0];\n texture.offset.y = values[1];\n }\n return texture;\n }\n\n // load a texture specified as a blob or data URI, or via an external URL using TextureLoader\n loadTexture(textureNode, images) {\n let fileName;\n const currentPath = this.textureLoader.path;\n const children = connections.get(textureNode.id).children;\n if (children !== undefined && children.length > 0 && images[children[0].ID] !== undefined) {\n fileName = images[children[0].ID];\n if (fileName.indexOf(\"blob:\") === 0 || fileName.indexOf(\"data:\") === 0) {\n this.textureLoader.setPath(undefined);\n }\n }\n let texture;\n const extension = textureNode.FileName.slice(-3).toLowerCase();\n if (extension === \"tga\") {\n const loader = this.manager.getHandler(\".tga\");\n if (loader === null) {\n console.warn(\"FBXLoader: TGA loader not found, creating placeholder texture for\", textureNode.RelativeFilename);\n texture = new Texture();\n } else {\n loader.setPath(this.textureLoader.path);\n texture = loader.load(fileName);\n }\n } else if (extension === \"psd\") {\n console.warn(\"FBXLoader: PSD textures are not supported, creating placeholder texture for\", textureNode.RelativeFilename);\n texture = new Texture();\n } else {\n texture = this.textureLoader.load(fileName);\n }\n this.textureLoader.setPath(currentPath);\n return texture;\n }\n\n // Parse nodes in FBXTree.Objects.Material\n parseMaterials(textureMap) {\n const materialMap = new Map();\n if (\"Material\" in fbxTree.Objects) {\n const materialNodes = fbxTree.Objects.Material;\n for (const nodeID in materialNodes) {\n const material = this.parseMaterial(materialNodes[nodeID], textureMap);\n if (material !== null) materialMap.set(parseInt(nodeID), material);\n }\n }\n return materialMap;\n }\n\n // Parse single node in FBXTree.Objects.Material\n // Materials are connected to texture maps in FBXTree.Objects.Textures\n // FBX format currently only supports Lambert and Phong shading models\n parseMaterial(materialNode, textureMap) {\n const ID = materialNode.id;\n const name = materialNode.attrName;\n let type = materialNode.ShadingModel;\n\n // Case where FBX wraps shading model in property object.\n if (typeof type === \"object\") {\n type = type.value;\n }\n\n // Ignore unused materials which don't have any connections.\n if (!connections.has(ID)) return null;\n const parameters = this.parseParameters(materialNode, textureMap, ID);\n let material;\n switch (type.toLowerCase()) {\n case \"phong\":\n material = new MeshPhongMaterial();\n break;\n case \"lambert\":\n material = new MeshLambertMaterial();\n break;\n default:\n console.warn('THREE.FBXLoader: unknown material type \"%s\". Defaulting to MeshPhongMaterial.', type);\n material = new MeshPhongMaterial();\n break;\n }\n material.setValues(parameters);\n material.name = name;\n return material;\n }\n\n // Parse FBX material and return parameters suitable for a three.js material\n // Also parse the texture map and return any textures associated with the material\n parseParameters(materialNode, textureMap, ID) {\n const parameters = {};\n if (materialNode.BumpFactor) {\n parameters.bumpScale = materialNode.BumpFactor.value;\n }\n if (materialNode.Diffuse) {\n parameters.color = new Color().fromArray(materialNode.Diffuse.value).convertSRGBToLinear();\n } else if (materialNode.DiffuseColor && (materialNode.DiffuseColor.type === \"Color\" || materialNode.DiffuseColor.type === \"ColorRGB\")) {\n // The blender exporter exports diffuse here instead of in materialNode.Diffuse\n parameters.color = new Color().fromArray(materialNode.DiffuseColor.value).convertSRGBToLinear();\n }\n if (materialNode.DisplacementFactor) {\n parameters.displacementScale = materialNode.DisplacementFactor.value;\n }\n if (materialNode.Emissive) {\n parameters.emissive = new Color().fromArray(materialNode.Emissive.value).convertSRGBToLinear();\n } else if (materialNode.EmissiveColor && (materialNode.EmissiveColor.type === \"Color\" || materialNode.EmissiveColor.type === \"ColorRGB\")) {\n // The blender exporter exports emissive color here instead of in materialNode.Emissive\n parameters.emissive = new Color().fromArray(materialNode.EmissiveColor.value).convertSRGBToLinear();\n }\n if (materialNode.EmissiveFactor) {\n parameters.emissiveIntensity = parseFloat(materialNode.EmissiveFactor.value);\n }\n if (materialNode.Opacity) {\n parameters.opacity = parseFloat(materialNode.Opacity.value);\n }\n if (parameters.opacity < 1.0) {\n parameters.transparent = true;\n }\n if (materialNode.ReflectionFactor) {\n parameters.reflectivity = materialNode.ReflectionFactor.value;\n }\n if (materialNode.Shininess) {\n parameters.shininess = materialNode.Shininess.value;\n }\n if (materialNode.Specular) {\n parameters.specular = new Color().fromArray(materialNode.Specular.value).convertSRGBToLinear();\n } else if (materialNode.SpecularColor && materialNode.SpecularColor.type === \"Color\") {\n // The blender exporter exports specular color here instead of in materialNode.Specular\n parameters.specular = new Color().fromArray(materialNode.SpecularColor.value).convertSRGBToLinear();\n }\n const scope = this;\n connections.get(ID).children.forEach(function (child) {\n const type = child.relationship;\n switch (type) {\n case \"Bump\":\n parameters.bumpMap = scope.getTexture(textureMap, child.ID);\n break;\n case \"Maya|TEX_ao_map\":\n parameters.aoMap = scope.getTexture(textureMap, child.ID);\n break;\n case \"DiffuseColor\":\n case \"Maya|TEX_color_map\":\n parameters.map = scope.getTexture(textureMap, child.ID);\n if (parameters.map !== undefined) {\n parameters.map.colorSpace = SRGBColorSpace;\n }\n break;\n case \"DisplacementColor\":\n parameters.displacementMap = scope.getTexture(textureMap, child.ID);\n break;\n case \"EmissiveColor\":\n parameters.emissiveMap = scope.getTexture(textureMap, child.ID);\n if (parameters.emissiveMap !== undefined) {\n parameters.emissiveMap.colorSpace = SRGBColorSpace;\n }\n break;\n case \"NormalMap\":\n case \"Maya|TEX_normal_map\":\n parameters.normalMap = scope.getTexture(textureMap, child.ID);\n break;\n case \"ReflectionColor\":\n parameters.envMap = scope.getTexture(textureMap, child.ID);\n if (parameters.envMap !== undefined) {\n parameters.envMap.mapping = EquirectangularReflectionMapping;\n parameters.envMap.colorSpace = SRGBColorSpace;\n }\n break;\n case \"SpecularColor\":\n parameters.specularMap = scope.getTexture(textureMap, child.ID);\n if (parameters.specularMap !== undefined) {\n parameters.specularMap.colorSpace = SRGBColorSpace;\n }\n break;\n case \"TransparentColor\":\n case \"TransparencyFactor\":\n parameters.alphaMap = scope.getTexture(textureMap, child.ID);\n parameters.transparent = true;\n break;\n case \"AmbientColor\":\n case \"ShininessExponent\": // AKA glossiness map\n case \"SpecularFactor\": // AKA specularLevel\n case \"VectorDisplacementColor\": // NOTE: Seems to be a copy of DisplacementColor\n default:\n console.warn(\"THREE.FBXLoader: %s map is not supported in three.js, skipping texture.\", type);\n break;\n }\n });\n return parameters;\n }\n\n // get a texture from the textureMap for use by a material.\n getTexture(textureMap, id) {\n // if the texture is a layered texture, just use the first layer and issue a warning\n if (\"LayeredTexture\" in fbxTree.Objects && id in fbxTree.Objects.LayeredTexture) {\n console.warn(\"THREE.FBXLoader: layered textures are not supported in three.js. Discarding all but first layer.\");\n id = connections.get(id).children[0].ID;\n }\n return textureMap.get(id);\n }\n\n // Parse nodes in FBXTree.Objects.Deformer\n // Deformer node can contain skinning or Vertex Cache animation data, however only skinning is supported here\n // Generates map of Skeleton-like objects for use later when generating and binding skeletons.\n parseDeformers() {\n const skeletons = {};\n const morphTargets = {};\n if (\"Deformer\" in fbxTree.Objects) {\n const DeformerNodes = fbxTree.Objects.Deformer;\n for (const nodeID in DeformerNodes) {\n const deformerNode = DeformerNodes[nodeID];\n const relationships = connections.get(parseInt(nodeID));\n if (deformerNode.attrType === \"Skin\") {\n const skeleton = this.parseSkeleton(relationships, DeformerNodes);\n skeleton.ID = nodeID;\n if (relationships.parents.length > 1) console.warn(\"THREE.FBXLoader: skeleton attached to more than one geometry is not supported.\");\n skeleton.geometryID = relationships.parents[0].ID;\n skeletons[nodeID] = skeleton;\n } else if (deformerNode.attrType === \"BlendShape\") {\n const morphTarget = {\n id: nodeID\n };\n morphTarget.rawTargets = this.parseMorphTargets(relationships, DeformerNodes);\n morphTarget.id = nodeID;\n if (relationships.parents.length > 1) console.warn(\"THREE.FBXLoader: morph target attached to more than one geometry is not supported.\");\n morphTargets[nodeID] = morphTarget;\n }\n }\n }\n return {\n skeletons: skeletons,\n morphTargets: morphTargets\n };\n }\n\n // Parse single nodes in FBXTree.Objects.Deformer\n // The top level skeleton node has type 'Skin' and sub nodes have type 'Cluster'\n // Each skin node represents a skeleton and each cluster node represents a bone\n parseSkeleton(relationships, deformerNodes) {\n const rawBones = [];\n relationships.children.forEach(function (child) {\n const boneNode = deformerNodes[child.ID];\n if (boneNode.attrType !== \"Cluster\") return;\n const rawBone = {\n ID: child.ID,\n indices: [],\n weights: [],\n transformLink: new Matrix4().fromArray(boneNode.TransformLink.a)\n // transform: new Matrix4().fromArray( boneNode.Transform.a ),\n // linkMode: boneNode.Mode,\n };\n\n if (\"Indexes\" in boneNode) {\n rawBone.indices = boneNode.Indexes.a;\n rawBone.weights = boneNode.Weights.a;\n }\n rawBones.push(rawBone);\n });\n return {\n rawBones: rawBones,\n bones: []\n };\n }\n\n // The top level morph deformer node has type \"BlendShape\" and sub nodes have type \"BlendShapeChannel\"\n parseMorphTargets(relationships, deformerNodes) {\n const rawMorphTargets = [];\n for (let i = 0; i < relationships.children.length; i++) {\n const child = relationships.children[i];\n const morphTargetNode = deformerNodes[child.ID];\n const rawMorphTarget = {\n name: morphTargetNode.attrName,\n initialWeight: morphTargetNode.DeformPercent,\n id: morphTargetNode.id,\n fullWeights: morphTargetNode.FullWeights.a\n };\n if (morphTargetNode.attrType !== \"BlendShapeChannel\") return;\n rawMorphTarget.geoID = connections.get(parseInt(child.ID)).children.filter(function (child) {\n return child.relationship === undefined;\n })[0].ID;\n rawMorphTargets.push(rawMorphTarget);\n }\n return rawMorphTargets;\n }\n\n // create the main Group() to be returned by the loader\n parseScene(deformers, geometryMap, materialMap) {\n sceneGraph = new Group();\n const modelMap = this.parseModels(deformers.skeletons, geometryMap, materialMap);\n const modelNodes = fbxTree.Objects.Model;\n const scope = this;\n modelMap.forEach(function (model) {\n const modelNode = modelNodes[model.ID];\n scope.setLookAtProperties(model, modelNode);\n const parentConnections = connections.get(model.ID).parents;\n parentConnections.forEach(function (connection) {\n const parent = modelMap.get(connection.ID);\n if (parent !== undefined) parent.add(model);\n });\n if (model.parent === null) {\n sceneGraph.add(model);\n }\n });\n this.bindSkeleton(deformers.skeletons, geometryMap, modelMap);\n this.createAmbientLight();\n sceneGraph.traverse(function (node) {\n if (node.userData.transformData) {\n if (node.parent) {\n node.userData.transformData.parentMatrix = node.parent.matrix;\n node.userData.transformData.parentMatrixWorld = node.parent.matrixWorld;\n }\n const transform = generateTransform(node.userData.transformData);\n node.applyMatrix4(transform);\n node.updateWorldMatrix();\n }\n });\n const animations = new AnimationParser().parse();\n\n // if all the models where already combined in a single group, just return that\n if (sceneGraph.children.length === 1 && sceneGraph.children[0].isGroup) {\n sceneGraph.children[0].animations = animations;\n sceneGraph = sceneGraph.children[0];\n }\n sceneGraph.animations = animations;\n }\n\n // parse nodes in FBXTree.Objects.Model\n parseModels(skeletons, geometryMap, materialMap) {\n const modelMap = new Map();\n const modelNodes = fbxTree.Objects.Model;\n for (const nodeID in modelNodes) {\n const id = parseInt(nodeID);\n const node = modelNodes[nodeID];\n const relationships = connections.get(id);\n let model = this.buildSkeleton(relationships, skeletons, id, node.attrName);\n if (!model) {\n switch (node.attrType) {\n case \"Camera\":\n model = this.createCamera(relationships);\n break;\n case \"Light\":\n model = this.createLight(relationships);\n break;\n case \"Mesh\":\n model = this.createMesh(relationships, geometryMap, materialMap);\n break;\n case \"NurbsCurve\":\n model = this.createCurve(relationships, geometryMap);\n break;\n case \"LimbNode\":\n case \"Root\":\n model = new Bone();\n break;\n case \"Null\":\n default:\n model = new Group();\n break;\n }\n model.name = node.attrName ? PropertyBinding.sanitizeNodeName(node.attrName) : \"\";\n model.ID = id;\n }\n this.getTransformData(model, node);\n modelMap.set(id, model);\n }\n return modelMap;\n }\n buildSkeleton(relationships, skeletons, id, name) {\n let bone = null;\n relationships.parents.forEach(function (parent) {\n for (const ID in skeletons) {\n const skeleton = skeletons[ID];\n skeleton.rawBones.forEach(function (rawBone, i) {\n if (rawBone.ID === parent.ID) {\n const subBone = bone;\n bone = new Bone();\n bone.matrixWorld.copy(rawBone.transformLink);\n\n // set name and id here - otherwise in cases where \"subBone\" is created it will not have a name / id\n\n bone.name = name ? PropertyBinding.sanitizeNodeName(name) : \"\";\n bone.ID = id;\n skeleton.bones[i] = bone;\n\n // In cases where a bone is shared between multiple meshes\n // duplicate the bone here and and it as a child of the first bone\n if (subBone !== null) {\n bone.add(subBone);\n }\n }\n });\n }\n });\n return bone;\n }\n\n // create a PerspectiveCamera or OrthographicCamera\n createCamera(relationships) {\n let model;\n let cameraAttribute;\n relationships.children.forEach(function (child) {\n const attr = fbxTree.Objects.NodeAttribute[child.ID];\n if (attr !== undefined) {\n cameraAttribute = attr;\n }\n });\n if (cameraAttribute === undefined) {\n model = new Object3D();\n } else {\n let type = 0;\n if (cameraAttribute.CameraProjectionType !== undefined && cameraAttribute.CameraProjectionType.value === 1) {\n type = 1;\n }\n let nearClippingPlane = 1;\n if (cameraAttribute.NearPlane !== undefined) {\n nearClippingPlane = cameraAttribute.NearPlane.value / 1000;\n }\n let farClippingPlane = 1000;\n if (cameraAttribute.FarPlane !== undefined) {\n farClippingPlane = cameraAttribute.FarPlane.value / 1000;\n }\n let width = window.innerWidth;\n let height = window.innerHeight;\n if (cameraAttribute.AspectWidth !== undefined && cameraAttribute.AspectHeight !== undefined) {\n width = cameraAttribute.AspectWidth.value;\n height = cameraAttribute.AspectHeight.value;\n }\n const aspect = width / height;\n let fov = 45;\n if (cameraAttribute.FieldOfView !== undefined) {\n fov = cameraAttribute.FieldOfView.value;\n }\n const focalLength = cameraAttribute.FocalLength ? cameraAttribute.FocalLength.value : null;\n switch (type) {\n case 0:\n // Perspective\n model = new PerspectiveCamera(fov, aspect, nearClippingPlane, farClippingPlane);\n if (focalLength !== null) model.setFocalLength(focalLength);\n break;\n case 1:\n // Orthographic\n model = new OrthographicCamera(-width / 2, width / 2, height / 2, -height / 2, nearClippingPlane, farClippingPlane);\n break;\n default:\n console.warn(\"THREE.FBXLoader: Unknown camera type \" + type + \".\");\n model = new Object3D();\n break;\n }\n }\n return model;\n }\n\n // Create a DirectionalLight, PointLight or SpotLight\n createLight(relationships) {\n let model;\n let lightAttribute;\n relationships.children.forEach(function (child) {\n const attr = fbxTree.Objects.NodeAttribute[child.ID];\n if (attr !== undefined) {\n lightAttribute = attr;\n }\n });\n if (lightAttribute === undefined) {\n model = new Object3D();\n } else {\n let type;\n\n // LightType can be undefined for Point lights\n if (lightAttribute.LightType === undefined) {\n type = 0;\n } else {\n type = lightAttribute.LightType.value;\n }\n let color = 0xffffff;\n if (lightAttribute.Color !== undefined) {\n color = new Color().fromArray(lightAttribute.Color.value).convertSRGBToLinear();\n }\n let intensity = lightAttribute.Intensity === undefined ? 1 : lightAttribute.Intensity.value / 100;\n\n // light disabled\n if (lightAttribute.CastLightOnObject !== undefined && lightAttribute.CastLightOnObject.value === 0) {\n intensity = 0;\n }\n let distance = 0;\n if (lightAttribute.FarAttenuationEnd !== undefined) {\n if (lightAttribute.EnableFarAttenuation !== undefined && lightAttribute.EnableFarAttenuation.value === 0) {\n distance = 0;\n } else {\n distance = lightAttribute.FarAttenuationEnd.value;\n }\n }\n\n // TODO: could this be calculated linearly from FarAttenuationStart to FarAttenuationEnd?\n const decay = 1;\n switch (type) {\n case 0:\n // Point\n model = new PointLight(color, intensity, distance, decay);\n break;\n case 1:\n // Directional\n model = new DirectionalLight(color, intensity);\n break;\n case 2:\n // Spot\n let angle = Math.PI / 3;\n if (lightAttribute.InnerAngle !== undefined) {\n angle = MathUtils.degToRad(lightAttribute.InnerAngle.value);\n }\n let penumbra = 0;\n if (lightAttribute.OuterAngle !== undefined) {\n // TODO: this is not correct - FBX calculates outer and inner angle in degrees\n // with OuterAngle > InnerAngle && OuterAngle <= Math.PI\n // while three.js uses a penumbra between (0, 1) to attenuate the inner angle\n penumbra = MathUtils.degToRad(lightAttribute.OuterAngle.value);\n penumbra = Math.max(penumbra, 1);\n }\n model = new SpotLight(color, intensity, distance, angle, penumbra, decay);\n break;\n default:\n console.warn(\"THREE.FBXLoader: Unknown light type \" + lightAttribute.LightType.value + \", defaulting to a PointLight.\");\n model = new PointLight(color, intensity);\n break;\n }\n if (lightAttribute.CastShadows !== undefined && lightAttribute.CastShadows.value === 1) {\n model.castShadow = true;\n }\n }\n return model;\n }\n createMesh(relationships, geometryMap, materialMap) {\n let model;\n let geometry = null;\n let material = null;\n const materials = [];\n\n // get geometry and materials(s) from connections\n relationships.children.forEach(function (child) {\n if (geometryMap.has(child.ID)) {\n geometry = geometryMap.get(child.ID);\n }\n if (materialMap.has(child.ID)) {\n materials.push(materialMap.get(child.ID));\n }\n });\n if (materials.length > 1) {\n material = materials;\n } else if (materials.length > 0) {\n material = materials[0];\n } else {\n material = new MeshPhongMaterial({\n name: Loader.DEFAULT_MATERIAL_NAME,\n color: 0xcccccc\n });\n materials.push(material);\n }\n if (\"color\" in geometry.attributes) {\n materials.forEach(function (material) {\n material.vertexColors = true;\n });\n }\n if (geometry.FBX_Deformer) {\n model = new SkinnedMesh(geometry, material);\n model.normalizeSkinWeights();\n } else {\n model = new Mesh(geometry, material);\n }\n return model;\n }\n createCurve(relationships, geometryMap) {\n const geometry = relationships.children.reduce(function (geo, child) {\n if (geometryMap.has(child.ID)) geo = geometryMap.get(child.ID);\n return geo;\n }, null);\n\n // FBX does not list materials for Nurbs lines, so we'll just put our own in here.\n const material = new LineBasicMaterial({\n name: Loader.DEFAULT_MATERIAL_NAME,\n color: 0x3300ff,\n linewidth: 1\n });\n return new Line(geometry, material);\n }\n\n // parse the model node for transform data\n getTransformData(model, modelNode) {\n const transformData = {};\n if (\"InheritType\" in modelNode) transformData.inheritType = parseInt(modelNode.InheritType.value);\n if (\"RotationOrder\" in modelNode) transformData.eulerOrder = getEulerOrder(modelNode.RotationOrder.value);else transformData.eulerOrder = \"ZYX\";\n if (\"Lcl_Translation\" in modelNode) transformData.translation = modelNode.Lcl_Translation.value;\n if (\"PreRotation\" in modelNode) transformData.preRotation = modelNode.PreRotation.value;\n if (\"Lcl_Rotation\" in modelNode) transformData.rotation = modelNode.Lcl_Rotation.value;\n if (\"PostRotation\" in modelNode) transformData.postRotation = modelNode.PostRotation.value;\n if (\"Lcl_Scaling\" in modelNode) transformData.scale = modelNode.Lcl_Scaling.value;\n if (\"ScalingOffset\" in modelNode) transformData.scalingOffset = modelNode.ScalingOffset.value;\n if (\"ScalingPivot\" in modelNode) transformData.scalingPivot = modelNode.ScalingPivot.value;\n if (\"RotationOffset\" in modelNode) transformData.rotationOffset = modelNode.RotationOffset.value;\n if (\"RotationPivot\" in modelNode) transformData.rotationPivot = modelNode.RotationPivot.value;\n model.userData.transformData = transformData;\n }\n setLookAtProperties(model, modelNode) {\n if (\"LookAtProperty\" in modelNode) {\n const children = connections.get(model.ID).children;\n children.forEach(function (child) {\n if (child.relationship === \"LookAtProperty\") {\n const lookAtTarget = fbxTree.Objects.Model[child.ID];\n if (\"Lcl_Translation\" in lookAtTarget) {\n const pos = lookAtTarget.Lcl_Translation.value;\n\n // DirectionalLight, SpotLight\n if (model.target !== undefined) {\n model.target.position.fromArray(pos);\n sceneGraph.add(model.target);\n } else {\n // Cameras and other Object3Ds\n\n model.lookAt(new Vector3().fromArray(pos));\n }\n }\n }\n });\n }\n }\n bindSkeleton(skeletons, geometryMap, modelMap) {\n const bindMatrices = this.parsePoseNodes();\n for (const ID in skeletons) {\n const skeleton = skeletons[ID];\n const parents = connections.get(parseInt(skeleton.ID)).parents;\n parents.forEach(function (parent) {\n if (geometryMap.has(parent.ID)) {\n const geoID = parent.ID;\n const geoRelationships = connections.get(geoID);\n geoRelationships.parents.forEach(function (geoConnParent) {\n if (modelMap.has(geoConnParent.ID)) {\n const model = modelMap.get(geoConnParent.ID);\n model.bind(new Skeleton(skeleton.bones), bindMatrices[geoConnParent.ID]);\n }\n });\n }\n });\n }\n }\n parsePoseNodes() {\n const bindMatrices = {};\n if (\"Pose\" in fbxTree.Objects) {\n const BindPoseNode = fbxTree.Objects.Pose;\n for (const nodeID in BindPoseNode) {\n if (BindPoseNode[nodeID].attrType === \"BindPose\" && BindPoseNode[nodeID].NbPoseNodes > 0) {\n const poseNodes = BindPoseNode[nodeID].PoseNode;\n if (Array.isArray(poseNodes)) {\n poseNodes.forEach(function (poseNode) {\n bindMatrices[poseNode.Node] = new Matrix4().fromArray(poseNode.Matrix.a);\n });\n } else {\n bindMatrices[poseNodes.Node] = new Matrix4().fromArray(poseNodes.Matrix.a);\n }\n }\n }\n }\n return bindMatrices;\n }\n\n // Parse ambient color in FBXTree.GlobalSettings - if it's not set to black (default), create an ambient light\n createAmbientLight() {\n if (\"GlobalSettings\" in fbxTree && \"AmbientColor\" in fbxTree.GlobalSettings) {\n const ambientColor = fbxTree.GlobalSettings.AmbientColor.value;\n const r = ambientColor[0];\n const g = ambientColor[1];\n const b = ambientColor[2];\n if (r !== 0 || g !== 0 || b !== 0) {\n const color = new Color(r, g, b).convertSRGBToLinear();\n sceneGraph.add(new AmbientLight(color, 1));\n }\n }\n }\n}\n\n// parse Geometry data from FBXTree and return map of BufferGeometries\nclass GeometryParser {\n constructor() {\n this.negativeMaterialIndices = false;\n }\n\n // Parse nodes in FBXTree.Objects.Geometry\n parse(deformers) {\n const geometryMap = new Map();\n if (\"Geometry\" in fbxTree.Objects) {\n const geoNodes = fbxTree.Objects.Geometry;\n for (const nodeID in geoNodes) {\n const relationships = connections.get(parseInt(nodeID));\n const geo = this.parseGeometry(relationships, geoNodes[nodeID], deformers);\n geometryMap.set(parseInt(nodeID), geo);\n }\n }\n\n // report warnings\n\n if (this.negativeMaterialIndices === true) {\n console.warn(\"THREE.FBXLoader: The FBX file contains invalid (negative) material indices. The asset might not render as expected.\");\n }\n return geometryMap;\n }\n\n // Parse single node in FBXTree.Objects.Geometry\n parseGeometry(relationships, geoNode, deformers) {\n switch (geoNode.attrType) {\n case \"Mesh\":\n return this.parseMeshGeometry(relationships, geoNode, deformers);\n break;\n case \"NurbsCurve\":\n return this.parseNurbsGeometry(geoNode);\n break;\n }\n }\n\n // Parse single node mesh geometry in FBXTree.Objects.Geometry\n parseMeshGeometry(relationships, geoNode, deformers) {\n const skeletons = deformers.skeletons;\n const morphTargets = [];\n const modelNodes = relationships.parents.map(function (parent) {\n return fbxTree.Objects.Model[parent.ID];\n });\n\n // don't create geometry if it is not associated with any models\n if (modelNodes.length === 0) return;\n const skeleton = relationships.children.reduce(function (skeleton, child) {\n if (skeletons[child.ID] !== undefined) skeleton = skeletons[child.ID];\n return skeleton;\n }, null);\n relationships.children.forEach(function (child) {\n if (deformers.morphTargets[child.ID] !== undefined) {\n morphTargets.push(deformers.morphTargets[child.ID]);\n }\n });\n\n // Assume one model and get the preRotation from that\n // if there is more than one model associated with the geometry this may cause problems\n const modelNode = modelNodes[0];\n const transformData = {};\n if (\"RotationOrder\" in modelNode) transformData.eulerOrder = getEulerOrder(modelNode.RotationOrder.value);\n if (\"InheritType\" in modelNode) transformData.inheritType = parseInt(modelNode.InheritType.value);\n if (\"GeometricTranslation\" in modelNode) transformData.translation = modelNode.GeometricTranslation.value;\n if (\"GeometricRotation\" in modelNode) transformData.rotation = modelNode.GeometricRotation.value;\n if (\"GeometricScaling\" in modelNode) transformData.scale = modelNode.GeometricScaling.value;\n const transform = generateTransform(transformData);\n return this.genGeometry(geoNode, skeleton, morphTargets, transform);\n }\n\n // Generate a BufferGeometry from a node in FBXTree.Objects.Geometry\n genGeometry(geoNode, skeleton, morphTargets, preTransform) {\n const geo = new BufferGeometry();\n if (geoNode.attrName) geo.name = geoNode.attrName;\n const geoInfo = this.parseGeoNode(geoNode, skeleton);\n const buffers = this.genBuffers(geoInfo);\n const positionAttribute = new Float32BufferAttribute(buffers.vertex, 3);\n positionAttribute.applyMatrix4(preTransform);\n geo.setAttribute(\"position\", positionAttribute);\n if (buffers.colors.length > 0) {\n geo.setAttribute(\"color\", new Float32BufferAttribute(buffers.colors, 3));\n }\n if (skeleton) {\n geo.setAttribute(\"skinIndex\", new Uint16BufferAttribute(buffers.weightsIndices, 4));\n geo.setAttribute(\"skinWeight\", new Float32BufferAttribute(buffers.vertexWeights, 4));\n\n // used later to bind the skeleton to the model\n geo.FBX_Deformer = skeleton;\n }\n if (buffers.normal.length > 0) {\n const normalMatrix = new Matrix3().getNormalMatrix(preTransform);\n const normalAttribute = new Float32BufferAttribute(buffers.normal, 3);\n normalAttribute.applyNormalMatrix(normalMatrix);\n geo.setAttribute(\"normal\", normalAttribute);\n }\n buffers.uvs.forEach(function (uvBuffer, i) {\n const name = i === 0 ? \"uv\" : `uv${i}`;\n geo.setAttribute(name, new Float32BufferAttribute(buffers.uvs[i], 2));\n });\n if (geoInfo.material && geoInfo.material.mappingType !== \"AllSame\") {\n // Convert the material indices of each vertex into rendering groups on the geometry.\n let prevMaterialIndex = buffers.materialIndex[0];\n let startIndex = 0;\n buffers.materialIndex.forEach(function (currentIndex, i) {\n if (currentIndex !== prevMaterialIndex) {\n geo.addGroup(startIndex, i - startIndex, prevMaterialIndex);\n prevMaterialIndex = currentIndex;\n startIndex = i;\n }\n });\n\n // the loop above doesn't add the last group, do that here.\n if (geo.groups.length > 0) {\n const lastGroup = geo.groups[geo.groups.length - 1];\n const lastIndex = lastGroup.start + lastGroup.count;\n if (lastIndex !== buffers.materialIndex.length) {\n geo.addGroup(lastIndex, buffers.materialIndex.length - lastIndex, prevMaterialIndex);\n }\n }\n\n // case where there are multiple materials but the whole geometry is only\n // using one of them\n if (geo.groups.length === 0) {\n geo.addGroup(0, buffers.materialIndex.length, buffers.materialIndex[0]);\n }\n }\n this.addMorphTargets(geo, geoNode, morphTargets, preTransform);\n return geo;\n }\n parseGeoNode(geoNode, skeleton) {\n const geoInfo = {};\n geoInfo.vertexPositions = geoNode.Vertices !== undefined ? geoNode.Vertices.a : [];\n geoInfo.vertexIndices = geoNode.PolygonVertexIndex !== undefined ? geoNode.PolygonVertexIndex.a : [];\n if (geoNode.LayerElementColor) {\n geoInfo.color = this.parseVertexColors(geoNode.LayerElementColor[0]);\n }\n if (geoNode.LayerElementMaterial) {\n geoInfo.material = this.parseMaterialIndices(geoNode.LayerElementMaterial[0]);\n }\n if (geoNode.LayerElementNormal) {\n geoInfo.normal = this.parseNormals(geoNode.LayerElementNormal[0]);\n }\n if (geoNode.LayerElementUV) {\n geoInfo.uv = [];\n let i = 0;\n while (geoNode.LayerElementUV[i]) {\n if (geoNode.LayerElementUV[i].UV) {\n geoInfo.uv.push(this.parseUVs(geoNode.LayerElementUV[i]));\n }\n i++;\n }\n }\n geoInfo.weightTable = {};\n if (skeleton !== null) {\n geoInfo.skeleton = skeleton;\n skeleton.rawBones.forEach(function (rawBone, i) {\n // loop over the bone's vertex indices and weights\n rawBone.indices.forEach(function (index, j) {\n if (geoInfo.weightTable[index] === undefined) geoInfo.weightTable[index] = [];\n geoInfo.weightTable[index].push({\n id: i,\n weight: rawBone.weights[j]\n });\n });\n });\n }\n return geoInfo;\n }\n genBuffers(geoInfo) {\n const buffers = {\n vertex: [],\n normal: [],\n colors: [],\n uvs: [],\n materialIndex: [],\n vertexWeights: [],\n weightsIndices: []\n };\n let polygonIndex = 0;\n let faceLength = 0;\n let displayedWeightsWarning = false;\n\n // these will hold data for a single face\n let facePositionIndexes = [];\n let faceNormals = [];\n let faceColors = [];\n let faceUVs = [];\n let faceWeights = [];\n let faceWeightIndices = [];\n const scope = this;\n geoInfo.vertexIndices.forEach(function (vertexIndex, polygonVertexIndex) {\n let materialIndex;\n let endOfFace = false;\n\n // Face index and vertex index arrays are combined in a single array\n // A cube with quad faces looks like this:\n // PolygonVertexIndex: *24 {\n // 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\n // }\n // Negative numbers mark the end of a face - first face here is 0, 1, 3, -3\n // to find index of last vertex bit shift the index: ^ - 1\n if (vertexIndex < 0) {\n vertexIndex = vertexIndex ^ -1; // equivalent to ( x * -1 ) - 1\n endOfFace = true;\n }\n let weightIndices = [];\n let weights = [];\n facePositionIndexes.push(vertexIndex * 3, vertexIndex * 3 + 1, vertexIndex * 3 + 2);\n if (geoInfo.color) {\n const data = getData(polygonVertexIndex, polygonIndex, vertexIndex, geoInfo.color);\n faceColors.push(data[0], data[1], data[2]);\n }\n if (geoInfo.skeleton) {\n if (geoInfo.weightTable[vertexIndex] !== undefined) {\n geoInfo.weightTable[vertexIndex].forEach(function (wt) {\n weights.push(wt.weight);\n weightIndices.push(wt.id);\n });\n }\n if (weights.length > 4) {\n if (!displayedWeightsWarning) {\n console.warn(\"THREE.FBXLoader: Vertex has more than 4 skinning weights assigned to vertex. Deleting additional weights.\");\n displayedWeightsWarning = true;\n }\n const wIndex = [0, 0, 0, 0];\n const Weight = [0, 0, 0, 0];\n weights.forEach(function (weight, weightIndex) {\n let currentWeight = weight;\n let currentIndex = weightIndices[weightIndex];\n Weight.forEach(function (comparedWeight, comparedWeightIndex, comparedWeightArray) {\n if (currentWeight > comparedWeight) {\n comparedWeightArray[comparedWeightIndex] = currentWeight;\n currentWeight = comparedWeight;\n const tmp = wIndex[comparedWeightIndex];\n wIndex[comparedWeightIndex] = currentIndex;\n currentIndex = tmp;\n }\n });\n });\n weightIndices = wIndex;\n weights = Weight;\n }\n\n // if the weight array is shorter than 4 pad with 0s\n while (weights.length < 4) {\n weights.push(0);\n weightIndices.push(0);\n }\n for (let i = 0; i < 4; ++i) {\n faceWeights.push(weights[i]);\n faceWeightIndices.push(weightIndices[i]);\n }\n }\n if (geoInfo.normal) {\n const data = getData(polygonVertexIndex, polygonIndex, vertexIndex, geoInfo.normal);\n faceNormals.push(data[0], data[1], data[2]);\n }\n if (geoInfo.material && geoInfo.material.mappingType !== \"AllSame\") {\n materialIndex = getData(polygonVertexIndex, polygonIndex, vertexIndex, geoInfo.material)[0];\n if (materialIndex < 0) {\n scope.negativeMaterialIndices = true;\n materialIndex = 0; // fallback\n }\n }\n\n if (geoInfo.uv) {\n geoInfo.uv.forEach(function (uv, i) {\n const data = getData(polygonVertexIndex, polygonIndex, vertexIndex, uv);\n if (faceUVs[i] === undefined) {\n faceUVs[i] = [];\n }\n faceUVs[i].push(data[0]);\n faceUVs[i].push(data[1]);\n });\n }\n faceLength++;\n if (endOfFace) {\n if (faceLength > 4) console.warn(\"THREE.FBXLoader: Polygons with more than four sides are not supported. Make sure to triangulate the geometry during export.\");\n scope.genFace(buffers, geoInfo, facePositionIndexes, materialIndex, faceNormals, faceColors, faceUVs, faceWeights, faceWeightIndices, faceLength);\n polygonIndex++;\n faceLength = 0;\n\n // reset arrays for the next face\n facePositionIndexes = [];\n faceNormals = [];\n faceColors = [];\n faceUVs = [];\n faceWeights = [];\n faceWeightIndices = [];\n }\n });\n return buffers;\n }\n\n // Generate data for a single face in a geometry. If the face is a quad then split it into 2 tris\n genFace(buffers, geoInfo, facePositionIndexes, materialIndex, faceNormals, faceColors, faceUVs, faceWeights, faceWeightIndices, faceLength) {\n for (let i = 2; i < faceLength; i++) {\n buffers.vertex.push(geoInfo.vertexPositions[facePositionIndexes[0]]);\n buffers.vertex.push(geoInfo.vertexPositions[facePositionIndexes[1]]);\n buffers.vertex.push(geoInfo.vertexPositions[facePositionIndexes[2]]);\n buffers.vertex.push(geoInfo.vertexPositions[facePositionIndexes[(i - 1) * 3]]);\n buffers.vertex.push(geoInfo.vertexPositions[facePositionIndexes[(i - 1) * 3 + 1]]);\n buffers.vertex.push(geoInfo.vertexPositions[facePositionIndexes[(i - 1) * 3 + 2]]);\n buffers.vertex.push(geoInfo.vertexPositions[facePositionIndexes[i * 3]]);\n buffers.vertex.push(geoInfo.vertexPositions[facePositionIndexes[i * 3 + 1]]);\n buffers.vertex.push(geoInfo.vertexPositions[facePositionIndexes[i * 3 + 2]]);\n if (geoInfo.skeleton) {\n buffers.vertexWeights.push(faceWeights[0]);\n buffers.vertexWeights.push(faceWeights[1]);\n buffers.vertexWeights.push(faceWeights[2]);\n buffers.vertexWeights.push(faceWeights[3]);\n buffers.vertexWeights.push(faceWeights[(i - 1) * 4]);\n buffers.vertexWeights.push(faceWeights[(i - 1) * 4 + 1]);\n buffers.vertexWeights.push(faceWeights[(i - 1) * 4 + 2]);\n buffers.vertexWeights.push(faceWeights[(i - 1) * 4 + 3]);\n buffers.vertexWeights.push(faceWeights[i * 4]);\n buffers.vertexWeights.push(faceWeights[i * 4 + 1]);\n buffers.vertexWeights.push(faceWeights[i * 4 + 2]);\n buffers.vertexWeights.push(faceWeights[i * 4 + 3]);\n buffers.weightsIndices.push(faceWeightIndices[0]);\n buffers.weightsIndices.push(faceWeightIndices[1]);\n buffers.weightsIndices.push(faceWeightIndices[2]);\n buffers.weightsIndices.push(faceWeightIndices[3]);\n buffers.weightsIndices.push(faceWeightIndices[(i - 1) * 4]);\n buffers.weightsIndices.push(faceWeightIndices[(i - 1) * 4 + 1]);\n buffers.weightsIndices.push(faceWeightIndices[(i - 1) * 4 + 2]);\n buffers.weightsIndices.push(faceWeightIndices[(i - 1) * 4 + 3]);\n buffers.weightsIndices.push(faceWeightIndices[i * 4]);\n buffers.weightsIndices.push(faceWeightIndices[i * 4 + 1]);\n buffers.weightsIndices.push(faceWeightIndices[i * 4 + 2]);\n buffers.weightsIndices.push(faceWeightIndices[i * 4 + 3]);\n }\n if (geoInfo.color) {\n buffers.colors.push(faceColors[0]);\n buffers.colors.push(faceColors[1]);\n buffers.colors.push(faceColors[2]);\n buffers.colors.push(faceColors[(i - 1) * 3]);\n buffers.colors.push(faceColors[(i - 1) * 3 + 1]);\n buffers.colors.push(faceColors[(i - 1) * 3 + 2]);\n buffers.colors.push(faceColors[i * 3]);\n buffers.colors.push(faceColors[i * 3 + 1]);\n buffers.colors.push(faceColors[i * 3 + 2]);\n }\n if (geoInfo.material && geoInfo.material.mappingType !== \"AllSame\") {\n buffers.materialIndex.push(materialIndex);\n buffers.materialIndex.push(materialIndex);\n buffers.materialIndex.push(materialIndex);\n }\n if (geoInfo.normal) {\n buffers.normal.push(faceNormals[0]);\n buffers.normal.push(faceNormals[1]);\n buffers.normal.push(faceNormals[2]);\n buffers.normal.push(faceNormals[(i - 1) * 3]);\n buffers.normal.push(faceNormals[(i - 1) * 3 + 1]);\n buffers.normal.push(faceNormals[(i - 1) * 3 + 2]);\n buffers.normal.push(faceNormals[i * 3]);\n buffers.normal.push(faceNormals[i * 3 + 1]);\n buffers.normal.push(faceNormals[i * 3 + 2]);\n }\n if (geoInfo.uv) {\n geoInfo.uv.forEach(function (uv, j) {\n if (buffers.uvs[j] === undefined) buffers.uvs[j] = [];\n buffers.uvs[j].push(faceUVs[j][0]);\n buffers.uvs[j].push(faceUVs[j][1]);\n buffers.uvs[j].push(faceUVs[j][(i - 1) * 2]);\n buffers.uvs[j].push(faceUVs[j][(i - 1) * 2 + 1]);\n buffers.uvs[j].push(faceUVs[j][i * 2]);\n buffers.uvs[j].push(faceUVs[j][i * 2 + 1]);\n });\n }\n }\n }\n addMorphTargets(parentGeo, parentGeoNode, morphTargets, preTransform) {\n if (morphTargets.length === 0) return;\n parentGeo.morphTargetsRelative = true;\n parentGeo.morphAttributes.position = [];\n // parentGeo.morphAttributes.normal = []; // not implemented\n\n const scope = this;\n morphTargets.forEach(function (morphTarget) {\n morphTarget.rawTargets.forEach(function (rawTarget) {\n const morphGeoNode = fbxTree.Objects.Geometry[rawTarget.geoID];\n if (morphGeoNode !== undefined) {\n scope.genMorphGeometry(parentGeo, parentGeoNode, morphGeoNode, preTransform, rawTarget.name);\n }\n });\n });\n }\n\n // a morph geometry node is similar to a standard node, and the node is also contained\n // in FBXTree.Objects.Geometry, however it can only have attributes for position, normal\n // and a special attribute Index defining which vertices of the original geometry are affected\n // Normal and position attributes only have data for the vertices that are affected by the morph\n genMorphGeometry(parentGeo, parentGeoNode, morphGeoNode, preTransform, name) {\n const vertexIndices = parentGeoNode.PolygonVertexIndex !== undefined ? parentGeoNode.PolygonVertexIndex.a : [];\n const morphPositionsSparse = morphGeoNode.Vertices !== undefined ? morphGeoNode.Vertices.a : [];\n const indices = morphGeoNode.Indexes !== undefined ? morphGeoNode.Indexes.a : [];\n const length = parentGeo.attributes.position.count * 3;\n const morphPositions = new Float32Array(length);\n for (let i = 0; i < indices.length; i++) {\n const morphIndex = indices[i] * 3;\n morphPositions[morphIndex] = morphPositionsSparse[i * 3];\n morphPositions[morphIndex + 1] = morphPositionsSparse[i * 3 + 1];\n morphPositions[morphIndex + 2] = morphPositionsSparse[i * 3 + 2];\n }\n\n // TODO: add morph normal support\n const morphGeoInfo = {\n vertexIndices: vertexIndices,\n vertexPositions: morphPositions\n };\n const morphBuffers = this.genBuffers(morphGeoInfo);\n const positionAttribute = new Float32BufferAttribute(morphBuffers.vertex, 3);\n positionAttribute.name = name || morphGeoNode.attrName;\n positionAttribute.applyMatrix4(preTransform);\n parentGeo.morphAttributes.position.push(positionAttribute);\n }\n\n // Parse normal from FBXTree.Objects.Geometry.LayerElementNormal if it exists\n parseNormals(NormalNode) {\n const mappingType = NormalNode.MappingInformationType;\n const referenceType = NormalNode.ReferenceInformationType;\n const buffer = NormalNode.Normals.a;\n let indexBuffer = [];\n if (referenceType === \"IndexToDirect\") {\n if (\"NormalIndex\" in NormalNode) {\n indexBuffer = NormalNode.NormalIndex.a;\n } else if (\"NormalsIndex\" in NormalNode) {\n indexBuffer = NormalNode.NormalsIndex.a;\n }\n }\n return {\n dataSize: 3,\n buffer: buffer,\n indices: indexBuffer,\n mappingType: mappingType,\n referenceType: referenceType\n };\n }\n\n // Parse UVs from FBXTree.Objects.Geometry.LayerElementUV if it exists\n parseUVs(UVNode) {\n const mappingType = UVNode.MappingInformationType;\n const referenceType = UVNode.ReferenceInformationType;\n const buffer = UVNode.UV.a;\n let indexBuffer = [];\n if (referenceType === \"IndexToDirect\") {\n indexBuffer = UVNode.UVIndex.a;\n }\n return {\n dataSize: 2,\n buffer: buffer,\n indices: indexBuffer,\n mappingType: mappingType,\n referenceType: referenceType\n };\n }\n\n // Parse Vertex Colors from FBXTree.Objects.Geometry.LayerElementColor if it exists\n parseVertexColors(ColorNode) {\n const mappingType = ColorNode.MappingInformationType;\n const referenceType = ColorNode.ReferenceInformationType;\n const buffer = ColorNode.Colors.a;\n let indexBuffer = [];\n if (referenceType === \"IndexToDirect\") {\n indexBuffer = ColorNode.ColorIndex.a;\n }\n for (let i = 0, c = new Color(); i < buffer.length; i += 4) {\n c.fromArray(buffer, i).convertSRGBToLinear().toArray(buffer, i);\n }\n return {\n dataSize: 4,\n buffer: buffer,\n indices: indexBuffer,\n mappingType: mappingType,\n referenceType: referenceType\n };\n }\n\n // Parse mapping and material data in FBXTree.Objects.Geometry.LayerElementMaterial if it exists\n parseMaterialIndices(MaterialNode) {\n const mappingType = MaterialNode.MappingInformationType;\n const referenceType = MaterialNode.ReferenceInformationType;\n if (mappingType === \"NoMappingInformation\") {\n return {\n dataSize: 1,\n buffer: [0],\n indices: [0],\n mappingType: \"AllSame\",\n referenceType: referenceType\n };\n }\n const materialIndexBuffer = MaterialNode.Materials.a;\n\n // Since materials are stored as indices, there's a bit of a mismatch between FBX and what\n // we expect.So we create an intermediate buffer that points to the index in the buffer,\n // for conforming with the other functions we've written for other data.\n const materialIndices = [];\n for (let i = 0; i < materialIndexBuffer.length; ++i) {\n materialIndices.push(i);\n }\n return {\n dataSize: 1,\n buffer: materialIndexBuffer,\n indices: materialIndices,\n mappingType: mappingType,\n referenceType: referenceType\n };\n }\n\n // Generate a NurbGeometry from a node in FBXTree.Objects.Geometry\n parseNurbsGeometry(geoNode) {\n const order = parseInt(geoNode.Order);\n if (isNaN(order)) {\n console.error(\"THREE.FBXLoader: Invalid Order %s given for geometry ID: %s\", geoNode.Order, geoNode.id);\n return new BufferGeometry();\n }\n const degree = order - 1;\n const knots = geoNode.KnotVector.a;\n const controlPoints = [];\n const pointsValues = geoNode.Points.a;\n for (let i = 0, l = pointsValues.length; i < l; i += 4) {\n controlPoints.push(new Vector4().fromArray(pointsValues, i));\n }\n let startKnot, endKnot;\n if (geoNode.Form === \"Closed\") {\n controlPoints.push(controlPoints[0]);\n } else if (geoNode.Form === \"Periodic\") {\n startKnot = degree;\n endKnot = knots.length - 1 - startKnot;\n for (let i = 0; i < degree; ++i) {\n controlPoints.push(controlPoints[i]);\n }\n }\n const curve = new NURBSCurve(degree, knots, controlPoints, startKnot, endKnot);\n const points = curve.getPoints(controlPoints.length * 12);\n return new BufferGeometry().setFromPoints(points);\n }\n}\n\n// parse animation data from FBXTree\nclass AnimationParser {\n // take raw animation clips and turn them into three.js animation clips\n parse() {\n const animationClips = [];\n const rawClips = this.parseClips();\n if (rawClips !== undefined) {\n for (const key in rawClips) {\n const rawClip = rawClips[key];\n const clip = this.addClip(rawClip);\n animationClips.push(clip);\n }\n }\n return animationClips;\n }\n parseClips() {\n // since the actual transformation data is stored in FBXTree.Objects.AnimationCurve,\n // if this is undefined we can safely assume there are no animations\n if (fbxTree.Objects.AnimationCurve === undefined) return undefined;\n const curveNodesMap = this.parseAnimationCurveNodes();\n this.parseAnimationCurves(curveNodesMap);\n const layersMap = this.parseAnimationLayers(curveNodesMap);\n const rawClips = this.parseAnimStacks(layersMap);\n return rawClips;\n }\n\n // parse nodes in FBXTree.Objects.AnimationCurveNode\n // each AnimationCurveNode holds data for an animation transform for a model (e.g. left arm rotation )\n // and is referenced by an AnimationLayer\n parseAnimationCurveNodes() {\n const rawCurveNodes = fbxTree.Objects.AnimationCurveNode;\n const curveNodesMap = new Map();\n for (const nodeID in rawCurveNodes) {\n const rawCurveNode = rawCurveNodes[nodeID];\n if (rawCurveNode.attrName.match(/S|R|T|DeformPercent/) !== null) {\n const curveNode = {\n id: rawCurveNode.id,\n attr: rawCurveNode.attrName,\n curves: {}\n };\n curveNodesMap.set(curveNode.id, curveNode);\n }\n }\n return curveNodesMap;\n }\n\n // parse nodes in FBXTree.Objects.AnimationCurve and connect them up to\n // previously parsed AnimationCurveNodes. Each AnimationCurve holds data for a single animated\n // axis ( e.g. times and values of x rotation)\n parseAnimationCurves(curveNodesMap) {\n const rawCurves = fbxTree.Objects.AnimationCurve;\n\n // TODO: Many values are identical up to roundoff error, but won't be optimised\n // e.g. position times: [0, 0.4, 0. 8]\n // position values: [7.23538335023477e-7, 93.67518615722656, -0.9982695579528809, 7.23538335023477e-7, 93.67518615722656, -0.9982695579528809, 7.235384487103147e-7, 93.67520904541016, -0.9982695579528809]\n // clearly, this should be optimised to\n // times: [0], positions [7.23538335023477e-7, 93.67518615722656, -0.9982695579528809]\n // this shows up in nearly every FBX file, and generally time array is length > 100\n\n for (const nodeID in rawCurves) {\n const animationCurve = {\n id: rawCurves[nodeID].id,\n times: rawCurves[nodeID].KeyTime.a.map(convertFBXTimeToSeconds),\n values: rawCurves[nodeID].KeyValueFloat.a\n };\n const relationships = connections.get(animationCurve.id);\n if (relationships !== undefined) {\n const animationCurveID = relationships.parents[0].ID;\n const animationCurveRelationship = relationships.parents[0].relationship;\n if (animationCurveRelationship.match(/X/)) {\n curveNodesMap.get(animationCurveID).curves[\"x\"] = animationCurve;\n } else if (animationCurveRelationship.match(/Y/)) {\n curveNodesMap.get(animationCurveID).curves[\"y\"] = animationCurve;\n } else if (animationCurveRelationship.match(/Z/)) {\n curveNodesMap.get(animationCurveID).curves[\"z\"] = animationCurve;\n } else if (animationCurveRelationship.match(/DeformPercent/) && curveNodesMap.has(animationCurveID)) {\n curveNodesMap.get(animationCurveID).curves[\"morph\"] = animationCurve;\n }\n }\n }\n }\n\n // parse nodes in FBXTree.Objects.AnimationLayer. Each layers holds references\n // to various AnimationCurveNodes and is referenced by an AnimationStack node\n // note: theoretically a stack can have multiple layers, however in practice there always seems to be one per stack\n parseAnimationLayers(curveNodesMap) {\n const rawLayers = fbxTree.Objects.AnimationLayer;\n const layersMap = new Map();\n for (const nodeID in rawLayers) {\n const layerCurveNodes = [];\n const connection = connections.get(parseInt(nodeID));\n if (connection !== undefined) {\n // all the animationCurveNodes used in the layer\n const children = connection.children;\n children.forEach(function (child, i) {\n if (curveNodesMap.has(child.ID)) {\n const curveNode = curveNodesMap.get(child.ID);\n\n // check that the curves are defined for at least one axis, otherwise ignore the curveNode\n if (curveNode.curves.x !== undefined || curveNode.curves.y !== undefined || curveNode.curves.z !== undefined) {\n if (layerCurveNodes[i] === undefined) {\n const modelID = connections.get(child.ID).parents.filter(function (parent) {\n return parent.relationship !== undefined;\n })[0].ID;\n if (modelID !== undefined) {\n const rawModel = fbxTree.Objects.Model[modelID.toString()];\n if (rawModel === undefined) {\n console.warn(\"THREE.FBXLoader: Encountered a unused curve.\", child);\n return;\n }\n const node = {\n modelName: rawModel.attrName ? PropertyBinding.sanitizeNodeName(rawModel.attrName) : \"\",\n ID: rawModel.id,\n initialPosition: [0, 0, 0],\n initialRotation: [0, 0, 0],\n initialScale: [1, 1, 1]\n };\n sceneGraph.traverse(function (child) {\n if (child.ID === rawModel.id) {\n node.transform = child.matrix;\n if (child.userData.transformData) node.eulerOrder = child.userData.transformData.eulerOrder;\n }\n });\n if (!node.transform) node.transform = new Matrix4();\n\n // if the animated model is pre rotated, we'll have to apply the pre rotations to every\n // animation value as well\n if (\"PreRotation\" in rawModel) node.preRotation = rawModel.PreRotation.value;\n if (\"PostRotation\" in rawModel) node.postRotation = rawModel.PostRotation.value;\n layerCurveNodes[i] = node;\n }\n }\n if (layerCurveNodes[i]) layerCurveNodes[i][curveNode.attr] = curveNode;\n } else if (curveNode.curves.morph !== undefined) {\n if (layerCurveNodes[i] === undefined) {\n const deformerID = connections.get(child.ID).parents.filter(function (parent) {\n return parent.relationship !== undefined;\n })[0].ID;\n const morpherID = connections.get(deformerID).parents[0].ID;\n const geoID = connections.get(morpherID).parents[0].ID;\n\n // assuming geometry is not used in more than one model\n const modelID = connections.get(geoID).parents[0].ID;\n const rawModel = fbxTree.Objects.Model[modelID];\n const node = {\n modelName: rawModel.attrName ? PropertyBinding.sanitizeNodeName(rawModel.attrName) : \"\",\n morphName: fbxTree.Objects.Deformer[deformerID].attrName\n };\n layerCurveNodes[i] = node;\n }\n layerCurveNodes[i][curveNode.attr] = curveNode;\n }\n }\n });\n layersMap.set(parseInt(nodeID), layerCurveNodes);\n }\n }\n return layersMap;\n }\n\n // parse nodes in FBXTree.Objects.AnimationStack. These are the top level node in the animation\n // hierarchy. Each Stack node will be used to create a AnimationClip\n parseAnimStacks(layersMap) {\n const rawStacks = fbxTree.Objects.AnimationStack;\n\n // connect the stacks (clips) up to the layers\n const rawClips = {};\n for (const nodeID in rawStacks) {\n const children = connections.get(parseInt(nodeID)).children;\n if (children.length > 1) {\n // it seems like stacks will always be associated with a single layer. But just in case there are files\n // where there are multiple layers per stack, we'll display a warning\n console.warn(\"THREE.FBXLoader: Encountered an animation stack with multiple layers, this is currently not supported. Ignoring subsequent layers.\");\n }\n const layer = layersMap.get(children[0].ID);\n rawClips[nodeID] = {\n name: rawStacks[nodeID].attrName,\n layer: layer\n };\n }\n return rawClips;\n }\n addClip(rawClip) {\n let tracks = [];\n const scope = this;\n rawClip.layer.forEach(function (rawTracks) {\n tracks = tracks.concat(scope.generateTracks(rawTracks));\n });\n return new AnimationClip(rawClip.name, -1, tracks);\n }\n generateTracks(rawTracks) {\n const tracks = [];\n let initialPosition = new Vector3();\n let initialRotation = new Quaternion();\n let initialScale = new Vector3();\n if (rawTracks.transform) rawTracks.transform.decompose(initialPosition, initialRotation, initialScale);\n initialPosition = initialPosition.toArray();\n initialRotation = new Euler().setFromQuaternion(initialRotation, rawTracks.eulerOrder).toArray();\n initialScale = initialScale.toArray();\n if (rawTracks.T !== undefined && Object.keys(rawTracks.T.curves).length > 0) {\n const positionTrack = this.generateVectorTrack(rawTracks.modelName, rawTracks.T.curves, initialPosition, \"position\");\n if (positionTrack !== undefined) tracks.push(positionTrack);\n }\n if (rawTracks.R !== undefined && Object.keys(rawTracks.R.curves).length > 0) {\n const rotationTrack = this.generateRotationTrack(rawTracks.modelName, rawTracks.R.curves, initialRotation, rawTracks.preRotation, rawTracks.postRotation, rawTracks.eulerOrder);\n if (rotationTrack !== undefined) tracks.push(rotationTrack);\n }\n if (rawTracks.S !== undefined && Object.keys(rawTracks.S.curves).length > 0) {\n const scaleTrack = this.generateVectorTrack(rawTracks.modelName, rawTracks.S.curves, initialScale, \"scale\");\n if (scaleTrack !== undefined) tracks.push(scaleTrack);\n }\n if (rawTracks.DeformPercent !== undefined) {\n const morphTrack = this.generateMorphTrack(rawTracks);\n if (morphTrack !== undefined) tracks.push(morphTrack);\n }\n return tracks;\n }\n generateVectorTrack(modelName, curves, initialValue, type) {\n const times = this.getTimesForAllAxes(curves);\n const values = this.getKeyframeTrackValues(times, curves, initialValue);\n return new VectorKeyframeTrack(modelName + \".\" + type, times, values);\n }\n generateRotationTrack(modelName, curves, initialValue, preRotation, postRotation, eulerOrder) {\n if (curves.x !== undefined) {\n this.interpolateRotations(curves.x);\n curves.x.values = curves.x.values.map(MathUtils.degToRad);\n }\n if (curves.y !== undefined) {\n this.interpolateRotations(curves.y);\n curves.y.values = curves.y.values.map(MathUtils.degToRad);\n }\n if (curves.z !== undefined) {\n this.interpolateRotations(curves.z);\n curves.z.values = curves.z.values.map(MathUtils.degToRad);\n }\n const times = this.getTimesForAllAxes(curves);\n const values = this.getKeyframeTrackValues(times, curves, initialValue);\n if (preRotation !== undefined) {\n preRotation = preRotation.map(MathUtils.degToRad);\n preRotation.push(eulerOrder);\n preRotation = new Euler().fromArray(preRotation);\n preRotation = new Quaternion().setFromEuler(preRotation);\n }\n if (postRotation !== undefined) {\n postRotation = postRotation.map(MathUtils.degToRad);\n postRotation.push(eulerOrder);\n postRotation = new Euler().fromArray(postRotation);\n postRotation = new Quaternion().setFromEuler(postRotation).invert();\n }\n const quaternion = new Quaternion();\n const euler = new Euler();\n const quaternionValues = [];\n for (let i = 0; i < values.length; i += 3) {\n euler.set(values[i], values[i + 1], values[i + 2], eulerOrder);\n quaternion.setFromEuler(euler);\n if (preRotation !== undefined) quaternion.premultiply(preRotation);\n if (postRotation !== undefined) quaternion.multiply(postRotation);\n quaternion.toArray(quaternionValues, i / 3 * 4);\n }\n return new QuaternionKeyframeTrack(modelName + \".quaternion\", times, quaternionValues);\n }\n generateMorphTrack(rawTracks) {\n const curves = rawTracks.DeformPercent.curves.morph;\n const values = curves.values.map(function (val) {\n return val / 100;\n });\n const morphNum = sceneGraph.getObjectByName(rawTracks.modelName).morphTargetDictionary[rawTracks.morphName];\n return new NumberKeyframeTrack(rawTracks.modelName + \".morphTargetInfluences[\" + morphNum + \"]\", curves.times, values);\n }\n\n // For all animated objects, times are defined separately for each axis\n // Here we'll combine the times into one sorted array without duplicates\n getTimesForAllAxes(curves) {\n let times = [];\n\n // first join together the times for each axis, if defined\n if (curves.x !== undefined) times = times.concat(curves.x.times);\n if (curves.y !== undefined) times = times.concat(curves.y.times);\n if (curves.z !== undefined) times = times.concat(curves.z.times);\n\n // then sort them\n times = times.sort(function (a, b) {\n return a - b;\n });\n\n // and remove duplicates\n if (times.length > 1) {\n let targetIndex = 1;\n let lastValue = times[0];\n for (let i = 1; i < times.length; i++) {\n const currentValue = times[i];\n if (currentValue !== lastValue) {\n times[targetIndex] = currentValue;\n lastValue = currentValue;\n targetIndex++;\n }\n }\n times = times.slice(0, targetIndex);\n }\n return times;\n }\n getKeyframeTrackValues(times, curves, initialValue) {\n const prevValue = initialValue;\n const values = [];\n let xIndex = -1;\n let yIndex = -1;\n let zIndex = -1;\n times.forEach(function (time) {\n if (curves.x) xIndex = curves.x.times.indexOf(time);\n if (curves.y) yIndex = curves.y.times.indexOf(time);\n if (curves.z) zIndex = curves.z.times.indexOf(time);\n\n // if there is an x value defined for this frame, use that\n if (xIndex !== -1) {\n const xValue = curves.x.values[xIndex];\n values.push(xValue);\n prevValue[0] = xValue;\n } else {\n // otherwise use the x value from the previous frame\n values.push(prevValue[0]);\n }\n if (yIndex !== -1) {\n const yValue = curves.y.values[yIndex];\n values.push(yValue);\n prevValue[1] = yValue;\n } else {\n values.push(prevValue[1]);\n }\n if (zIndex !== -1) {\n const zValue = curves.z.values[zIndex];\n values.push(zValue);\n prevValue[2] = zValue;\n } else {\n values.push(prevValue[2]);\n }\n });\n return values;\n }\n\n // Rotations are defined as Euler angles which can have values of any size\n // These will be converted to quaternions which don't support values greater than\n // PI, so we'll interpolate large rotations\n interpolateRotations(curve) {\n for (let i = 1; i < curve.values.length; i++) {\n const initialValue = curve.values[i - 1];\n const valuesSpan = curve.values[i] - initialValue;\n const absoluteSpan = Math.abs(valuesSpan);\n if (absoluteSpan >= 180) {\n const numSubIntervals = absoluteSpan / 180;\n const step = valuesSpan / numSubIntervals;\n let nextValue = initialValue + step;\n const initialTime = curve.times[i - 1];\n const timeSpan = curve.times[i] - initialTime;\n const interval = timeSpan / numSubIntervals;\n let nextTime = initialTime + interval;\n const interpolatedTimes = [];\n const interpolatedValues = [];\n while (nextTime < curve.times[i]) {\n interpolatedTimes.push(nextTime);\n nextTime += interval;\n interpolatedValues.push(nextValue);\n nextValue += step;\n }\n curve.times = inject(curve.times, i, interpolatedTimes);\n curve.values = inject(curve.values, i, interpolatedValues);\n }\n }\n }\n}\n\n// parse an FBX file in ASCII format\nclass TextParser {\n getPrevNode() {\n return this.nodeStack[this.currentIndent - 2];\n }\n getCurrentNode() {\n return this.nodeStack[this.currentIndent - 1];\n }\n getCurrentProp() {\n return this.currentProp;\n }\n pushStack(node) {\n this.nodeStack.push(node);\n this.currentIndent += 1;\n }\n popStack() {\n this.nodeStack.pop();\n this.currentIndent -= 1;\n }\n setCurrentProp(val, name) {\n this.currentProp = val;\n this.currentPropName = name;\n }\n parse(text) {\n this.currentIndent = 0;\n this.allNodes = new FBXTree();\n this.nodeStack = [];\n this.currentProp = [];\n this.currentPropName = \"\";\n const scope = this;\n const split = text.split(/[\\r\\n]+/);\n split.forEach(function (line, i) {\n const matchComment = line.match(/^[\\s\\t]*;/);\n const matchEmpty = line.match(/^[\\s\\t]*$/);\n if (matchComment || matchEmpty) return;\n const matchBeginning = line.match(\"^\\\\t{\" + scope.currentIndent + \"}(\\\\w+):(.*){\", \"\");\n const matchProperty = line.match(\"^\\\\t{\" + scope.currentIndent + \"}(\\\\w+):[\\\\s\\\\t\\\\r\\\\n](.*)\");\n const matchEnd = line.match(\"^\\\\t{\" + (scope.currentIndent - 1) + \"}}\");\n if (matchBeginning) {\n scope.parseNodeBegin(line, matchBeginning);\n } else if (matchProperty) {\n scope.parseNodeProperty(line, matchProperty, split[++i]);\n } else if (matchEnd) {\n scope.popStack();\n } else if (line.match(/^[^\\s\\t}]/)) {\n // large arrays are split over multiple lines terminated with a ',' character\n // if this is encountered the line needs to be joined to the previous line\n scope.parseNodePropertyContinued(line);\n }\n });\n return this.allNodes;\n }\n parseNodeBegin(line, property) {\n const nodeName = property[1].trim().replace(/^\"/, \"\").replace(/\"$/, \"\");\n const nodeAttrs = property[2].split(\",\").map(function (attr) {\n return attr.trim().replace(/^\"/, \"\").replace(/\"$/, \"\");\n });\n const node = {\n name: nodeName\n };\n const attrs = this.parseNodeAttr(nodeAttrs);\n const currentNode = this.getCurrentNode();\n\n // a top node\n if (this.currentIndent === 0) {\n this.allNodes.add(nodeName, node);\n } else {\n // a subnode\n\n // if the subnode already exists, append it\n if (nodeName in currentNode) {\n // special case Pose needs PoseNodes as an array\n if (nodeName === \"PoseNode\") {\n currentNode.PoseNode.push(node);\n } else if (currentNode[nodeName].id !== undefined) {\n currentNode[nodeName] = {};\n currentNode[nodeName][currentNode[nodeName].id] = currentNode[nodeName];\n }\n if (attrs.id !== \"\") currentNode[nodeName][attrs.id] = node;\n } else if (typeof attrs.id === \"number\") {\n currentNode[nodeName] = {};\n currentNode[nodeName][attrs.id] = node;\n } else if (nodeName !== \"Properties70\") {\n if (nodeName === \"PoseNode\") currentNode[nodeName] = [node];else currentNode[nodeName] = node;\n }\n }\n if (typeof attrs.id === \"number\") node.id = attrs.id;\n if (attrs.name !== \"\") node.attrName = attrs.name;\n if (attrs.type !== \"\") node.attrType = attrs.type;\n this.pushStack(node);\n }\n parseNodeAttr(attrs) {\n let id = attrs[0];\n if (attrs[0] !== \"\") {\n id = parseInt(attrs[0]);\n if (isNaN(id)) {\n id = attrs[0];\n }\n }\n let name = \"\",\n type = \"\";\n if (attrs.length > 1) {\n name = attrs[1].replace(/^(\\w+)::/, \"\");\n type = attrs[2];\n }\n return {\n id: id,\n name: name,\n type: type\n };\n }\n parseNodeProperty(line, property, contentLine) {\n let propName = property[1].replace(/^\"/, \"\").replace(/\"$/, \"\").trim();\n let propValue = property[2].replace(/^\"/, \"\").replace(/\"$/, \"\").trim();\n\n // for special case: base64 image data follows \"Content: ,\" line\n //\tContent: ,\n //\t \"/9j/4RDaRXhpZgAATU0A...\"\n if (propName === \"Content\" && propValue === \",\") {\n propValue = contentLine.replace(/\"/g, \"\").replace(/,$/, \"\").trim();\n }\n const currentNode = this.getCurrentNode();\n const parentName = currentNode.name;\n if (parentName === \"Properties70\") {\n this.parseNodeSpecialProperty(line, propName, propValue);\n return;\n }\n\n // Connections\n if (propName === \"C\") {\n const connProps = propValue.split(\",\").slice(1);\n const from = parseInt(connProps[0]);\n const to = parseInt(connProps[1]);\n let rest = propValue.split(\",\").slice(3);\n rest = rest.map(function (elem) {\n return elem.trim().replace(/^\"/, \"\");\n });\n propName = \"connections\";\n propValue = [from, to];\n append(propValue, rest);\n if (currentNode[propName] === undefined) {\n currentNode[propName] = [];\n }\n }\n\n // Node\n if (propName === \"Node\") currentNode.id = propValue;\n\n // connections\n if (propName in currentNode && Array.isArray(currentNode[propName])) {\n currentNode[propName].push(propValue);\n } else {\n if (propName !== \"a\") currentNode[propName] = propValue;else currentNode.a = propValue;\n }\n this.setCurrentProp(currentNode, propName);\n\n // convert string to array, unless it ends in ',' in which case more will be added to it\n if (propName === \"a\" && propValue.slice(-1) !== \",\") {\n currentNode.a = parseNumberArray(propValue);\n }\n }\n parseNodePropertyContinued(line) {\n const currentNode = this.getCurrentNode();\n currentNode.a += line;\n\n // if the line doesn't end in ',' we have reached the end of the property value\n // so convert the string to an array\n if (line.slice(-1) !== \",\") {\n currentNode.a = parseNumberArray(currentNode.a);\n }\n }\n\n // parse \"Property70\"\n parseNodeSpecialProperty(line, propName, propValue) {\n // split this\n // P: \"Lcl Scaling\", \"Lcl Scaling\", \"\", \"A\",1,1,1\n // into array like below\n // [\"Lcl Scaling\", \"Lcl Scaling\", \"\", \"A\", \"1,1,1\" ]\n const props = propValue.split('\",').map(function (prop) {\n return prop.trim().replace(/^\\\"/, \"\").replace(/\\s/, \"_\");\n });\n const innerPropName = props[0];\n const innerPropType1 = props[1];\n const innerPropType2 = props[2];\n const innerPropFlag = props[3];\n let innerPropValue = props[4];\n\n // cast values where needed, otherwise leave as strings\n switch (innerPropType1) {\n case \"int\":\n case \"enum\":\n case \"bool\":\n case \"ULongLong\":\n case \"double\":\n case \"Number\":\n case \"FieldOfView\":\n innerPropValue = parseFloat(innerPropValue);\n break;\n case \"Color\":\n case \"ColorRGB\":\n case \"Vector3D\":\n case \"Lcl_Translation\":\n case \"Lcl_Rotation\":\n case \"Lcl_Scaling\":\n innerPropValue = parseNumberArray(innerPropValue);\n break;\n }\n\n // CAUTION: these props must append to parent's parent\n this.getPrevNode()[innerPropName] = {\n type: innerPropType1,\n type2: innerPropType2,\n flag: innerPropFlag,\n value: innerPropValue\n };\n this.setCurrentProp(this.getPrevNode(), innerPropName);\n }\n}\n\n// Parse an FBX file in Binary format\nclass BinaryParser {\n parse(buffer) {\n const reader = new BinaryReader(buffer);\n reader.skip(23); // skip magic 23 bytes\n\n const version = reader.getUint32();\n if (version < 6400) {\n throw new Error(\"THREE.FBXLoader: FBX version not supported, FileVersion: \" + version);\n }\n const allNodes = new FBXTree();\n while (!this.endOfContent(reader)) {\n const node = this.parseNode(reader, version);\n if (node !== null) allNodes.add(node.name, node);\n }\n return allNodes;\n }\n\n // Check if reader has reached the end of content.\n endOfContent(reader) {\n // footer size: 160bytes + 16-byte alignment padding\n // - 16bytes: magic\n // - padding til 16-byte alignment (at least 1byte?)\n //\t(seems like some exporters embed fixed 15 or 16bytes?)\n // - 4bytes: magic\n // - 4bytes: version\n // - 120bytes: zero\n // - 16bytes: magic\n if (reader.size() % 16 === 0) {\n return (reader.getOffset() + 160 + 16 & ~0xf) >= reader.size();\n } else {\n return reader.getOffset() + 160 + 16 >= reader.size();\n }\n }\n\n // recursively parse nodes until the end of the file is reached\n parseNode(reader, version) {\n const node = {};\n\n // The first three data sizes depends on version.\n const endOffset = version >= 7500 ? reader.getUint64() : reader.getUint32();\n const numProperties = version >= 7500 ? reader.getUint64() : reader.getUint32();\n version >= 7500 ? reader.getUint64() : reader.getUint32(); // the returned propertyListLen is not used\n\n const nameLen = reader.getUint8();\n const name = reader.getString(nameLen);\n\n // Regards this node as NULL-record if endOffset is zero\n if (endOffset === 0) return null;\n const propertyList = [];\n for (let i = 0; i < numProperties; i++) {\n propertyList.push(this.parseProperty(reader));\n }\n\n // Regards the first three elements in propertyList as id, attrName, and attrType\n const id = propertyList.length > 0 ? propertyList[0] : \"\";\n const attrName = propertyList.length > 1 ? propertyList[1] : \"\";\n const attrType = propertyList.length > 2 ? propertyList[2] : \"\";\n\n // check if this node represents just a single property\n // like (name, 0) set or (name2, [0, 1, 2]) set of {name: 0, name2: [0, 1, 2]}\n node.singleProperty = numProperties === 1 && reader.getOffset() === endOffset ? true : false;\n while (endOffset > reader.getOffset()) {\n const subNode = this.parseNode(reader, version);\n if (subNode !== null) this.parseSubNode(name, node, subNode);\n }\n node.propertyList = propertyList; // raw property list used by parent\n\n if (typeof id === \"number\") node.id = id;\n if (attrName !== \"\") node.attrName = attrName;\n if (attrType !== \"\") node.attrType = attrType;\n if (name !== \"\") node.name = name;\n return node;\n }\n parseSubNode(name, node, subNode) {\n // special case: child node is single property\n if (subNode.singleProperty === true) {\n const value = subNode.propertyList[0];\n if (Array.isArray(value)) {\n node[subNode.name] = subNode;\n subNode.a = value;\n } else {\n node[subNode.name] = value;\n }\n } else if (name === \"Connections\" && subNode.name === \"C\") {\n const array = [];\n subNode.propertyList.forEach(function (property, i) {\n // first Connection is FBX type (OO, OP, etc.). We'll discard these\n if (i !== 0) array.push(property);\n });\n if (node.connections === undefined) {\n node.connections = [];\n }\n node.connections.push(array);\n } else if (subNode.name === \"Properties70\") {\n const keys = Object.keys(subNode);\n keys.forEach(function (key) {\n node[key] = subNode[key];\n });\n } else if (name === \"Properties70\" && subNode.name === \"P\") {\n let innerPropName = subNode.propertyList[0];\n let innerPropType1 = subNode.propertyList[1];\n const innerPropType2 = subNode.propertyList[2];\n const innerPropFlag = subNode.propertyList[3];\n let innerPropValue;\n if (innerPropName.indexOf(\"Lcl \") === 0) innerPropName = innerPropName.replace(\"Lcl \", \"Lcl_\");\n if (innerPropType1.indexOf(\"Lcl \") === 0) innerPropType1 = innerPropType1.replace(\"Lcl \", \"Lcl_\");\n if (innerPropType1 === \"Color\" || innerPropType1 === \"ColorRGB\" || innerPropType1 === \"Vector\" || innerPropType1 === \"Vector3D\" || innerPropType1.indexOf(\"Lcl_\") === 0) {\n innerPropValue = [subNode.propertyList[4], subNode.propertyList[5], subNode.propertyList[6]];\n } else {\n innerPropValue = subNode.propertyList[4];\n }\n\n // this will be copied to parent, see above\n node[innerPropName] = {\n type: innerPropType1,\n type2: innerPropType2,\n flag: innerPropFlag,\n value: innerPropValue\n };\n } else if (node[subNode.name] === undefined) {\n if (typeof subNode.id === \"number\") {\n node[subNode.name] = {};\n node[subNode.name][subNode.id] = subNode;\n } else {\n node[subNode.name] = subNode;\n }\n } else {\n if (subNode.name === \"PoseNode\") {\n if (!Array.isArray(node[subNode.name])) {\n node[subNode.name] = [node[subNode.name]];\n }\n node[subNode.name].push(subNode);\n } else if (node[subNode.name][subNode.id] === undefined) {\n node[subNode.name][subNode.id] = subNode;\n }\n }\n }\n parseProperty(reader) {\n const type = reader.getString(1);\n let length;\n switch (type) {\n case \"C\":\n return reader.getBoolean();\n case \"D\":\n return reader.getFloat64();\n case \"F\":\n return reader.getFloat32();\n case \"I\":\n return reader.getInt32();\n case \"L\":\n return reader.getInt64();\n case \"R\":\n length = reader.getUint32();\n return reader.getArrayBuffer(length);\n case \"S\":\n length = reader.getUint32();\n return reader.getString(length);\n case \"Y\":\n return reader.getInt16();\n case \"b\":\n case \"c\":\n case \"d\":\n case \"f\":\n case \"i\":\n case \"l\":\n const arrayLength = reader.getUint32();\n const encoding = reader.getUint32(); // 0: non-compressed, 1: compressed\n const compressedLength = reader.getUint32();\n if (encoding === 0) {\n switch (type) {\n case \"b\":\n case \"c\":\n return reader.getBooleanArray(arrayLength);\n case \"d\":\n return reader.getFloat64Array(arrayLength);\n case \"f\":\n return reader.getFloat32Array(arrayLength);\n case \"i\":\n return reader.getInt32Array(arrayLength);\n case \"l\":\n return reader.getInt64Array(arrayLength);\n }\n }\n const data = fflate.unzlibSync(new Uint8Array(reader.getArrayBuffer(compressedLength)));\n const reader2 = new BinaryReader(data.buffer);\n switch (type) {\n case \"b\":\n case \"c\":\n return reader2.getBooleanArray(arrayLength);\n case \"d\":\n return reader2.getFloat64Array(arrayLength);\n case \"f\":\n return reader2.getFloat32Array(arrayLength);\n case \"i\":\n return reader2.getInt32Array(arrayLength);\n case \"l\":\n return reader2.getInt64Array(arrayLength);\n }\n break;\n // cannot happen but is required by the DeepScan\n\n default:\n throw new Error(\"THREE.FBXLoader: Unknown property type \" + type);\n }\n }\n}\nclass BinaryReader {\n constructor(buffer, littleEndian) {\n this.dv = new DataView(buffer);\n this.offset = 0;\n this.littleEndian = littleEndian !== undefined ? littleEndian : true;\n this._textDecoder = new TextDecoder();\n }\n getOffset() {\n return this.offset;\n }\n size() {\n return this.dv.buffer.byteLength;\n }\n skip(length) {\n this.offset += length;\n }\n\n // seems like true/false representation depends on exporter.\n // true: 1 or 'Y'(=0x59), false: 0 or 'T'(=0x54)\n // then sees LSB.\n getBoolean() {\n return (this.getUint8() & 1) === 1;\n }\n getBooleanArray(size) {\n const a = [];\n for (let i = 0; i < size; i++) {\n a.push(this.getBoolean());\n }\n return a;\n }\n getUint8() {\n const value = this.dv.getUint8(this.offset);\n this.offset += 1;\n return value;\n }\n getInt16() {\n const value = this.dv.getInt16(this.offset, this.littleEndian);\n this.offset += 2;\n return value;\n }\n getInt32() {\n const value = this.dv.getInt32(this.offset, this.littleEndian);\n this.offset += 4;\n return value;\n }\n getInt32Array(size) {\n const a = [];\n for (let i = 0; i < size; i++) {\n a.push(this.getInt32());\n }\n return a;\n }\n getUint32() {\n const value = this.dv.getUint32(this.offset, this.littleEndian);\n this.offset += 4;\n return value;\n }\n\n // JavaScript doesn't support 64-bit integer so calculate this here\n // 1 << 32 will return 1 so using multiply operation instead here.\n // There's a possibility that this method returns wrong value if the value\n // is out of the range between Number.MAX_SAFE_INTEGER and Number.MIN_SAFE_INTEGER.\n // TODO: safely handle 64-bit integer\n getInt64() {\n let low, high;\n if (this.littleEndian) {\n low = this.getUint32();\n high = this.getUint32();\n } else {\n high = this.getUint32();\n low = this.getUint32();\n }\n\n // calculate negative value\n if (high & 0x80000000) {\n high = ~high & 0xffffffff;\n low = ~low & 0xffffffff;\n if (low === 0xffffffff) high = high + 1 & 0xffffffff;\n low = low + 1 & 0xffffffff;\n return -(high * 0x100000000 + low);\n }\n return high * 0x100000000 + low;\n }\n getInt64Array(size) {\n const a = [];\n for (let i = 0; i < size; i++) {\n a.push(this.getInt64());\n }\n return a;\n }\n\n // Note: see getInt64() comment\n getUint64() {\n let low, high;\n if (this.littleEndian) {\n low = this.getUint32();\n high = this.getUint32();\n } else {\n high = this.getUint32();\n low = this.getUint32();\n }\n return high * 0x100000000 + low;\n }\n getFloat32() {\n const value = this.dv.getFloat32(this.offset, this.littleEndian);\n this.offset += 4;\n return value;\n }\n getFloat32Array(size) {\n const a = [];\n for (let i = 0; i < size; i++) {\n a.push(this.getFloat32());\n }\n return a;\n }\n getFloat64() {\n const value = this.dv.getFloat64(this.offset, this.littleEndian);\n this.offset += 8;\n return value;\n }\n getFloat64Array(size) {\n const a = [];\n for (let i = 0; i < size; i++) {\n a.push(this.getFloat64());\n }\n return a;\n }\n getArrayBuffer(size) {\n const value = this.dv.buffer.slice(this.offset, this.offset + size);\n this.offset += size;\n return value;\n }\n getString(size) {\n const start = this.offset;\n let a = new Uint8Array(this.dv.buffer, start, size);\n this.skip(size);\n const nullByte = a.indexOf(0);\n if (nullByte >= 0) a = new Uint8Array(this.dv.buffer, start, nullByte);\n return this._textDecoder.decode(a);\n }\n}\n\n// FBXTree holds a representation of the FBX data, returned by the TextParser ( FBX ASCII format)\n// and BinaryParser( FBX Binary format)\nclass FBXTree {\n add(key, val) {\n this[key] = val;\n }\n}\n\n// ************** UTILITY FUNCTIONS **************\n\nfunction isFbxFormatBinary(buffer) {\n const CORRECT = \"Kaydara\\u0020FBX\\u0020Binary\\u0020\\u0020\\0\";\n return buffer.byteLength >= CORRECT.length && CORRECT === convertArrayBufferToString(buffer, 0, CORRECT.length);\n}\nfunction isFbxFormatASCII(text) {\n const CORRECT = [\"K\", \"a\", \"y\", \"d\", \"a\", \"r\", \"a\", \"\\\\\", \"F\", \"B\", \"X\", \"\\\\\", \"B\", \"i\", \"n\", \"a\", \"r\", \"y\", \"\\\\\", \"\\\\\"];\n let cursor = 0;\n function read(offset) {\n const result = text[offset - 1];\n text = text.slice(cursor + offset);\n cursor++;\n return result;\n }\n for (let i = 0; i < CORRECT.length; ++i) {\n const num = read(1);\n if (num === CORRECT[i]) {\n return false;\n }\n }\n return true;\n}\nfunction getFbxVersion(text) {\n const versionRegExp = /FBXVersion: (\\d+)/;\n const match = text.match(versionRegExp);\n if (match) {\n const version = parseInt(match[1]);\n return version;\n }\n throw new Error(\"THREE.FBXLoader: Cannot find the version number for the file given.\");\n}\n\n// Converts FBX ticks into real time seconds.\nfunction convertFBXTimeToSeconds(time) {\n return time / 46186158000;\n}\nconst dataArray = [];\n\n// extracts the data from the correct position in the FBX array based on indexing type\nfunction getData(polygonVertexIndex, polygonIndex, vertexIndex, infoObject) {\n let index;\n switch (infoObject.mappingType) {\n case \"ByPolygonVertex\":\n index = polygonVertexIndex;\n break;\n case \"ByPolygon\":\n index = polygonIndex;\n break;\n case \"ByVertice\":\n index = vertexIndex;\n break;\n case \"AllSame\":\n index = infoObject.indices[0];\n break;\n default:\n console.warn(\"THREE.FBXLoader: unknown attribute mapping type \" + infoObject.mappingType);\n }\n if (infoObject.referenceType === \"IndexToDirect\") index = infoObject.indices[index];\n const from = index * infoObject.dataSize;\n const to = from + infoObject.dataSize;\n return slice(dataArray, infoObject.buffer, from, to);\n}\nconst tempEuler = new Euler();\nconst tempVec = new Vector3();\n\n// generate transformation from FBX transform data\n// ref: https://help.autodesk.com/view/FBX/2017/ENU/?guid=__files_GUID_10CDD63C_79C1_4F2D_BB28_AD2BE65A02ED_htm\n// 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\nfunction generateTransform(transformData) {\n const lTranslationM = new Matrix4();\n const lPreRotationM = new Matrix4();\n const lRotationM = new Matrix4();\n const lPostRotationM = new Matrix4();\n const lScalingM = new Matrix4();\n const lScalingPivotM = new Matrix4();\n const lScalingOffsetM = new Matrix4();\n const lRotationOffsetM = new Matrix4();\n const lRotationPivotM = new Matrix4();\n const lParentGX = new Matrix4();\n const lParentLX = new Matrix4();\n const lGlobalT = new Matrix4();\n const inheritType = transformData.inheritType ? transformData.inheritType : 0;\n if (transformData.translation) lTranslationM.setPosition(tempVec.fromArray(transformData.translation));\n if (transformData.preRotation) {\n const array = transformData.preRotation.map(MathUtils.degToRad);\n array.push(transformData.eulerOrder || Euler.DEFAULT_ORDER);\n lPreRotationM.makeRotationFromEuler(tempEuler.fromArray(array));\n }\n if (transformData.rotation) {\n const array = transformData.rotation.map(MathUtils.degToRad);\n array.push(transformData.eulerOrder || Euler.DEFAULT_ORDER);\n lRotationM.makeRotationFromEuler(tempEuler.fromArray(array));\n }\n if (transformData.postRotation) {\n const array = transformData.postRotation.map(MathUtils.degToRad);\n array.push(transformData.eulerOrder || Euler.DEFAULT_ORDER);\n lPostRotationM.makeRotationFromEuler(tempEuler.fromArray(array));\n lPostRotationM.invert();\n }\n if (transformData.scale) lScalingM.scale(tempVec.fromArray(transformData.scale));\n\n // Pivots and offsets\n if (transformData.scalingOffset) lScalingOffsetM.setPosition(tempVec.fromArray(transformData.scalingOffset));\n if (transformData.scalingPivot) lScalingPivotM.setPosition(tempVec.fromArray(transformData.scalingPivot));\n if (transformData.rotationOffset) lRotationOffsetM.setPosition(tempVec.fromArray(transformData.rotationOffset));\n if (transformData.rotationPivot) lRotationPivotM.setPosition(tempVec.fromArray(transformData.rotationPivot));\n\n // parent transform\n if (transformData.parentMatrixWorld) {\n lParentLX.copy(transformData.parentMatrix);\n lParentGX.copy(transformData.parentMatrixWorld);\n }\n const lLRM = lPreRotationM.clone().multiply(lRotationM).multiply(lPostRotationM);\n // Global Rotation\n const lParentGRM = new Matrix4();\n lParentGRM.extractRotation(lParentGX);\n\n // Global Shear*Scaling\n const lParentTM = new Matrix4();\n lParentTM.copyPosition(lParentGX);\n const lParentGRSM = lParentTM.clone().invert().multiply(lParentGX);\n const lParentGSM = lParentGRM.clone().invert().multiply(lParentGRSM);\n const lLSM = lScalingM;\n const lGlobalRS = new Matrix4();\n if (inheritType === 0) {\n lGlobalRS.copy(lParentGRM).multiply(lLRM).multiply(lParentGSM).multiply(lLSM);\n } else if (inheritType === 1) {\n lGlobalRS.copy(lParentGRM).multiply(lParentGSM).multiply(lLRM).multiply(lLSM);\n } else {\n const lParentLSM = new Matrix4().scale(new Vector3().setFromMatrixScale(lParentLX));\n const lParentLSM_inv = lParentLSM.clone().invert();\n const lParentGSM_noLocal = lParentGSM.clone().multiply(lParentLSM_inv);\n lGlobalRS.copy(lParentGRM).multiply(lLRM).multiply(lParentGSM_noLocal).multiply(lLSM);\n }\n const lRotationPivotM_inv = lRotationPivotM.clone().invert();\n const lScalingPivotM_inv = lScalingPivotM.clone().invert();\n // Calculate the local transform matrix\n let lTransform = lTranslationM.clone().multiply(lRotationOffsetM).multiply(lRotationPivotM).multiply(lPreRotationM).multiply(lRotationM).multiply(lPostRotationM).multiply(lRotationPivotM_inv).multiply(lScalingOffsetM).multiply(lScalingPivotM).multiply(lScalingM).multiply(lScalingPivotM_inv);\n const lLocalTWithAllPivotAndOffsetInfo = new Matrix4().copyPosition(lTransform);\n const lGlobalTranslation = lParentGX.clone().multiply(lLocalTWithAllPivotAndOffsetInfo);\n lGlobalT.copyPosition(lGlobalTranslation);\n lTransform = lGlobalT.clone().multiply(lGlobalRS);\n\n // from global to local\n lTransform.premultiply(lParentGX.invert());\n return lTransform;\n}\n\n// Returns the three.js intrinsic Euler order corresponding to FBX extrinsic Euler order\n// ref: http://help.autodesk.com/view/FBX/2017/ENU/?guid=__cpp_ref_class_fbx_euler_html\nfunction getEulerOrder(order) {\n order = order || 0;\n const enums = [\"ZYX\",\n // -> XYZ extrinsic\n \"YZX\",\n // -> XZY extrinsic\n \"XZY\",\n // -> YZX extrinsic\n \"ZXY\",\n // -> YXZ extrinsic\n \"YXZ\",\n // -> ZXY extrinsic\n \"XYZ\" // -> ZYX extrinsic\n //'SphericXYZ', // not possible to support\n ];\n\n if (order === 6) {\n console.warn(\"THREE.FBXLoader: unsupported Euler Order: Spherical XYZ. Animations and rotations may be incorrect.\");\n return enums[0];\n }\n return enums[order];\n}\n\n// Parses comma separated list of numbers and returns them an array.\n// Used internally by the TextParser\nfunction parseNumberArray(value) {\n const array = value.split(\",\").map(function (val) {\n return parseFloat(val);\n });\n return array;\n}\nfunction convertArrayBufferToString(buffer, from, to) {\n if (from === undefined) from = 0;\n if (to === undefined) to = buffer.byteLength;\n return new TextDecoder().decode(new Uint8Array(buffer, from, to));\n}\nfunction append(a, b) {\n for (let i = 0, j = a.length, l = b.length; i < l; i++, j++) {\n a[j] = b[i];\n }\n}\nfunction slice(a, b, from, to) {\n for (let i = from, j = 0; i < to; i++, j++) {\n a[j] = b[i];\n }\n return a;\n}\n\n// inject array a2 into array a1 at index\nfunction inject(a1, index, a2) {\n return a1.slice(0, index).concat(a2).concat(a1.slice(index));\n}\nexport { FBXLoader 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{\n AmbientLight,\n AnimationClip,\n Bone,\n BufferGeometry,\n ClampToEdgeWrapping,\n Color,\n DirectionalLight,\n EquirectangularReflectionMapping,\n Euler,\n FileLoader,\n Float32BufferAttribute,\n Group,\n Line,\n LineBasicMaterial,\n Loader,\n LoaderUtils,\n MathUtils,\n Matrix3,\n Matrix4,\n Mesh,\n MeshLambertMaterial,\n MeshPhongMaterial,\n NumberKeyframeTrack,\n Object3D,\n OrthographicCamera,\n PerspectiveCamera,\n PointLight,\n PropertyBinding,\n Quaternion,\n QuaternionKeyframeTrack,\n RepeatWrapping,\n Skeleton,\n SkinnedMesh,\n SpotLight,\n Texture,\n TextureLoader,\n Uint16BufferAttribute,\n Vector3,\n Vector4,\n VectorKeyframeTrack,\n SRGBColorSpace,\n} from \"three\";\nimport * as fflate from \"../public/libs/fflate.module\";\nimport { NURBSCurve } from \"../public/curves/NURBSCurve.js\";\n\n/**\n * Loader loads FBX file and generates Group representing FBX scene.\n * Requires FBX file to be >= 7.0 and in ASCII or >= 6400 in Binary format\n * Versions lower than this may load but will probably have errors\n *\n * Needs Support:\n * Morph normals / blend shape normals\n *\n * FBX format references:\n * \thttps://help.autodesk.com/view/FBX/2017/ENU/?guid=__cpp_ref_index_html (C++ SDK reference)\n *\n * Binary format specification:\n *\thttps://code.blender.org/2013/08/fbx-binary-file-format-specification/\n */\n\nlet fbxTree;\nlet connections;\nlet sceneGraph;\n\nclass FBXLoader extends Loader {\n constructor(manager) {\n super(manager);\n }\n\n load(url, onLoad, onProgress, onError) {\n const scope = this;\n\n const path =\n scope.path === \"\" ? LoaderUtils.extractUrlBase(url) : scope.path;\n\n const loader = new FileLoader(this.manager);\n loader.setPath(scope.path);\n loader.setResponseType(\"arraybuffer\");\n loader.setRequestHeader(scope.requestHeader);\n loader.setWithCredentials(scope.withCredentials);\n\n loader.load(\n url,\n function (buffer) {\n try {\n onLoad(scope.parse(buffer, path));\n } catch (e) {\n if (onError) {\n onError(e);\n } else {\n console.error(e);\n }\n\n scope.manager.itemError(url);\n }\n },\n onProgress,\n onError\n );\n }\n\n parse(FBXBuffer, path) {\n if (isFbxFormatBinary(FBXBuffer)) {\n fbxTree = new BinaryParser().parse(FBXBuffer);\n } else {\n const FBXText = convertArrayBufferToString(FBXBuffer);\n\n if (!isFbxFormatASCII(FBXText)) {\n throw new Error(\"THREE.FBXLoader: Unknown format.\");\n }\n\n if (getFbxVersion(FBXText) < 7000) {\n throw new Error(\n \"THREE.FBXLoader: FBX version not supported, FileVersion: \" +\n getFbxVersion(FBXText)\n );\n }\n\n fbxTree = new TextParser().parse(FBXText);\n }\n\n // console.log( fbxTree );\n\n const textureLoader = new TextureLoader(this.manager)\n .setPath(this.resourcePath || path)\n .setCrossOrigin(this.crossOrigin);\n\n return new FBXTreeParser(textureLoader, this.manager).parse(fbxTree);\n }\n}\n\n// Parse the FBXTree object returned by the BinaryParser or TextParser and return a Group\nclass FBXTreeParser {\n constructor(textureLoader, manager) {\n this.textureLoader = textureLoader;\n this.manager = manager;\n }\n\n parse() {\n connections = this.parseConnections();\n\n const images = this.parseImages();\n const textures = this.parseTextures(images);\n const materials = this.parseMaterials(textures);\n const deformers = this.parseDeformers();\n const geometryMap = new GeometryParser().parse(deformers);\n\n this.parseScene(deformers, geometryMap, materials);\n\n return sceneGraph;\n }\n\n // Parses FBXTree.Connections which holds parent-child connections between objects (e.g. material -> texture, model->geometry )\n // and details the connection type\n parseConnections() {\n const connectionMap = new Map();\n\n if (\"Connections\" in fbxTree) {\n const rawConnections = fbxTree.Connections.connections;\n\n rawConnections.forEach(function (rawConnection) {\n const fromID = rawConnection[0];\n const toID = rawConnection[1];\n const relationship = rawConnection[2];\n\n if (!connectionMap.has(fromID)) {\n connectionMap.set(fromID, {\n parents: [],\n children: [],\n });\n }\n\n const parentRelationship = { ID: toID, relationship: relationship };\n connectionMap.get(fromID).parents.push(parentRelationship);\n\n if (!connectionMap.has(toID)) {\n connectionMap.set(toID, {\n parents: [],\n children: [],\n });\n }\n\n const childRelationship = { ID: fromID, relationship: relationship };\n connectionMap.get(toID).children.push(childRelationship);\n });\n }\n\n return connectionMap;\n }\n\n // Parse FBXTree.Objects.Video for embedded image data\n // These images are connected to textures in FBXTree.Objects.Textures\n // via FBXTree.Connections.\n parseImages() {\n const images = {};\n const blobs = {};\n\n if (\"Video\" in fbxTree.Objects) {\n const videoNodes = fbxTree.Objects.Video;\n\n for (const nodeID in videoNodes) {\n const videoNode = videoNodes[nodeID];\n\n const id = parseInt(nodeID);\n\n images[id] = videoNode.RelativeFilename || videoNode.Filename;\n\n // raw image data is in videoNode.Content\n if (\"Content\" in videoNode) {\n const arrayBufferContent =\n videoNode.Content instanceof ArrayBuffer &&\n videoNode.Content.byteLength > 0;\n const base64Content =\n typeof videoNode.Content === \"string\" && videoNode.Content !== \"\";\n\n if (arrayBufferContent || base64Content) {\n const image = this.parseImage(videoNodes[nodeID]);\n\n blobs[videoNode.RelativeFilename || videoNode.Filename] = image;\n }\n }\n }\n }\n\n for (const id in images) {\n const filename = images[id];\n\n if (blobs[filename] !== undefined) images[id] = blobs[filename];\n else images[id] = images[id].split(\"\\\\\").pop();\n }\n\n return images;\n }\n\n // Parse embedded image data in FBXTree.Video.Content\n parseImage(videoNode) {\n const content = videoNode.Content;\n const fileName = videoNode.RelativeFilename || videoNode.Filename;\n const extension = fileName\n .slice(fileName.lastIndexOf(\".\") + 1)\n .toLowerCase();\n\n let type;\n\n switch (extension) {\n case \"bmp\":\n type = \"image/bmp\";\n break;\n\n case \"jpg\":\n case \"jpeg\":\n type = \"image/jpeg\";\n break;\n\n case \"png\":\n type = \"image/png\";\n break;\n\n case \"tif\":\n type = \"image/tiff\";\n break;\n\n case \"tga\":\n if (this.manager.getHandler(\".tga\") === null) {\n console.warn(\"FBXLoader: TGA loader not found, skipping \", fileName);\n }\n\n type = \"image/tga\";\n break;\n\n default:\n console.warn(\n 'FBXLoader: Image type \"' + extension + '\" is not supported.'\n );\n return;\n }\n\n if (typeof content === \"string\") {\n // ASCII format\n\n return \"data:\" + type + \";base64,\" + content;\n } else {\n // Binary Format\n\n const array = new Uint8Array(content);\n return window.URL.createObjectURL(new Blob([array], { type: type }));\n }\n }\n\n // Parse nodes in FBXTree.Objects.Texture\n // These contain details such as UV scaling, cropping, rotation etc and are connected\n // to images in FBXTree.Objects.Video\n parseTextures(images) {\n const textureMap = new Map();\n\n if (\"Texture\" in fbxTree.Objects) {\n const textureNodes = fbxTree.Objects.Texture;\n for (const nodeID in textureNodes) {\n const texture = this.parseTexture(textureNodes[nodeID], images);\n textureMap.set(parseInt(nodeID), texture);\n }\n }\n\n return textureMap;\n }\n\n // Parse individual node in FBXTree.Objects.Texture\n parseTexture(textureNode, images) {\n const texture = this.loadTexture(textureNode, images);\n\n texture.ID = textureNode.id;\n\n texture.name = textureNode.attrName;\n\n const wrapModeU = textureNode.WrapModeU;\n const wrapModeV = textureNode.WrapModeV;\n\n const valueU = wrapModeU !== undefined ? wrapModeU.value : 0;\n const valueV = wrapModeV !== undefined ? wrapModeV.value : 0;\n\n // http://download.autodesk.com/us/fbx/SDKdocs/FBX_SDK_Help/files/fbxsdkref/class_k_fbx_texture.html#889640e63e2e681259ea81061b85143a\n // 0: repeat(default), 1: clamp\n\n texture.wrapS = valueU === 0 ? RepeatWrapping : ClampToEdgeWrapping;\n texture.wrapT = valueV === 0 ? RepeatWrapping : ClampToEdgeWrapping;\n\n if (\"Scaling\" in textureNode) {\n const values = textureNode.Scaling.value;\n\n texture.repeat.x = values[0];\n texture.repeat.y = values[1];\n }\n\n if (\"Translation\" in textureNode) {\n const values = textureNode.Translation.value;\n\n texture.offset.x = values[0];\n texture.offset.y = values[1];\n }\n\n return texture;\n }\n\n // load a texture specified as a blob or data URI, or via an external URL using TextureLoader\n loadTexture(textureNode, images) {\n let fileName;\n\n const currentPath = this.textureLoader.path;\n\n const children = connections.get(textureNode.id).children;\n\n if (\n children !== undefined &&\n children.length > 0 &&\n images[children[0].ID] !== undefined\n ) {\n fileName = images[children[0].ID];\n\n if (fileName.indexOf(\"blob:\") === 0 || fileName.indexOf(\"data:\") === 0) {\n this.textureLoader.setPath(undefined);\n }\n }\n\n let texture;\n\n const extension = textureNode.FileName.slice(-3).toLowerCase();\n\n if (extension === \"tga\") {\n const loader = this.manager.getHandler(\".tga\");\n\n if (loader === null) {\n console.warn(\n \"FBXLoader: TGA loader not found, creating placeholder texture for\",\n textureNode.RelativeFilename\n );\n texture = new Texture();\n } else {\n loader.setPath(this.textureLoader.path);\n texture = loader.load(fileName);\n }\n } else if (extension === \"psd\") {\n console.warn(\n \"FBXLoader: PSD textures are not supported, creating placeholder texture for\",\n textureNode.RelativeFilename\n );\n texture = new Texture();\n } else {\n texture = this.textureLoader.load(fileName);\n }\n\n this.textureLoader.setPath(currentPath);\n\n return texture;\n }\n\n // Parse nodes in FBXTree.Objects.Material\n parseMaterials(textureMap) {\n const materialMap = new Map();\n\n if (\"Material\" in fbxTree.Objects) {\n const materialNodes = fbxTree.Objects.Material;\n\n for (const nodeID in materialNodes) {\n const material = this.parseMaterial(materialNodes[nodeID], textureMap);\n\n if (material !== null) materialMap.set(parseInt(nodeID), material);\n }\n }\n\n return materialMap;\n }\n\n // Parse single node in FBXTree.Objects.Material\n // Materials are connected to texture maps in FBXTree.Objects.Textures\n // FBX format currently only supports Lambert and Phong shading models\n parseMaterial(materialNode, textureMap) {\n const ID = materialNode.id;\n const name = materialNode.attrName;\n let type = materialNode.ShadingModel;\n\n // Case where FBX wraps shading model in property object.\n if (typeof type === \"object\") {\n type = type.value;\n }\n\n // Ignore unused materials which don't have any connections.\n if (!connections.has(ID)) return null;\n\n const parameters = this.parseParameters(materialNode, textureMap, ID);\n\n let material;\n\n switch (type.toLowerCase()) {\n case \"phong\":\n material = new MeshPhongMaterial();\n break;\n case \"lambert\":\n material = new MeshLambertMaterial();\n break;\n default:\n console.warn(\n 'THREE.FBXLoader: unknown material type \"%s\". Defaulting to MeshPhongMaterial.',\n type\n );\n material = new MeshPhongMaterial();\n break;\n }\n\n material.setValues(parameters);\n material.name = name;\n\n return material;\n }\n\n // Parse FBX material and return parameters suitable for a three.js material\n // Also parse the texture map and return any textures associated with the material\n parseParameters(materialNode, textureMap, ID) {\n const parameters = {};\n\n if (materialNode.BumpFactor) {\n parameters.bumpScale = materialNode.BumpFactor.value;\n }\n\n if (materialNode.Diffuse) {\n parameters.color = new Color()\n .fromArray(materialNode.Diffuse.value)\n .convertSRGBToLinear();\n } else if (\n materialNode.DiffuseColor &&\n (materialNode.DiffuseColor.type === \"Color\" ||\n materialNode.DiffuseColor.type === \"ColorRGB\")\n ) {\n // The blender exporter exports diffuse here instead of in materialNode.Diffuse\n parameters.color = new Color()\n .fromArray(materialNode.DiffuseColor.value)\n .convertSRGBToLinear();\n }\n\n if (materialNode.DisplacementFactor) {\n parameters.displacementScale = materialNode.DisplacementFactor.value;\n }\n\n if (materialNode.Emissive) {\n parameters.emissive = new Color()\n .fromArray(materialNode.Emissive.value)\n .convertSRGBToLinear();\n } else if (\n materialNode.EmissiveColor &&\n (materialNode.EmissiveColor.type === \"Color\" ||\n materialNode.EmissiveColor.type === \"ColorRGB\")\n ) {\n // The blender exporter exports emissive color here instead of in materialNode.Emissive\n parameters.emissive = new Color()\n .fromArray(materialNode.EmissiveColor.value)\n .convertSRGBToLinear();\n }\n\n if (materialNode.EmissiveFactor) {\n parameters.emissiveIntensity = parseFloat(\n materialNode.EmissiveFactor.value\n );\n }\n\n if (materialNode.Opacity) {\n parameters.opacity = parseFloat(materialNode.Opacity.value);\n }\n\n if (parameters.opacity < 1.0) {\n parameters.transparent = true;\n }\n\n if (materialNode.ReflectionFactor) {\n parameters.reflectivity = materialNode.ReflectionFactor.value;\n }\n\n if (materialNode.Shininess) {\n parameters.shininess = materialNode.Shininess.value;\n }\n\n if (materialNode.Specular) {\n parameters.specular = new Color()\n .fromArray(materialNode.Specular.value)\n .convertSRGBToLinear();\n } else if (\n materialNode.SpecularColor &&\n materialNode.SpecularColor.type === \"Color\"\n ) {\n // The blender exporter exports specular color here instead of in materialNode.Specular\n parameters.specular = new Color()\n .fromArray(materialNode.SpecularColor.value)\n .convertSRGBToLinear();\n }\n\n const scope = this;\n connections.get(ID).children.forEach(function (child) {\n const type = child.relationship;\n\n switch (type) {\n case \"Bump\":\n parameters.bumpMap = scope.getTexture(textureMap, child.ID);\n break;\n\n case \"Maya|TEX_ao_map\":\n parameters.aoMap = scope.getTexture(textureMap, child.ID);\n break;\n\n case \"DiffuseColor\":\n case \"Maya|TEX_color_map\":\n parameters.map = scope.getTexture(textureMap, child.ID);\n if (parameters.map !== undefined) {\n parameters.map.colorSpace = SRGBColorSpace;\n }\n\n break;\n\n case \"DisplacementColor\":\n parameters.displacementMap = scope.getTexture(textureMap, child.ID);\n break;\n\n case \"EmissiveColor\":\n parameters.emissiveMap = scope.getTexture(textureMap, child.ID);\n if (parameters.emissiveMap !== undefined) {\n parameters.emissiveMap.colorSpace = SRGBColorSpace;\n }\n\n break;\n\n case \"NormalMap\":\n case \"Maya|TEX_normal_map\":\n parameters.normalMap = scope.getTexture(textureMap, child.ID);\n break;\n\n case \"ReflectionColor\":\n parameters.envMap = scope.getTexture(textureMap, child.ID);\n if (parameters.envMap !== undefined) {\n parameters.envMap.mapping = EquirectangularReflectionMapping;\n parameters.envMap.colorSpace = SRGBColorSpace;\n }\n\n break;\n\n case \"SpecularColor\":\n parameters.specularMap = scope.getTexture(textureMap, child.ID);\n if (parameters.specularMap !== undefined) {\n parameters.specularMap.colorSpace = SRGBColorSpace;\n }\n\n break;\n\n case \"TransparentColor\":\n case \"TransparencyFactor\":\n parameters.alphaMap = scope.getTexture(textureMap, child.ID);\n parameters.transparent = true;\n break;\n\n case \"AmbientColor\":\n case \"ShininessExponent\": // AKA glossiness map\n case \"SpecularFactor\": // AKA specularLevel\n case \"VectorDisplacementColor\": // NOTE: Seems to be a copy of DisplacementColor\n default:\n console.warn(\n \"THREE.FBXLoader: %s map is not supported in three.js, skipping texture.\",\n type\n );\n break;\n }\n });\n\n return parameters;\n }\n\n // get a texture from the textureMap for use by a material.\n getTexture(textureMap, id) {\n // if the texture is a layered texture, just use the first layer and issue a warning\n if (\n \"LayeredTexture\" in fbxTree.Objects &&\n id in fbxTree.Objects.LayeredTexture\n ) {\n console.warn(\n \"THREE.FBXLoader: layered textures are not supported in three.js. Discarding all but first layer.\"\n );\n id = connections.get(id).children[0].ID;\n }\n\n return textureMap.get(id);\n }\n\n // Parse nodes in FBXTree.Objects.Deformer\n // Deformer node can contain skinning or Vertex Cache animation data, however only skinning is supported here\n // Generates map of Skeleton-like objects for use later when generating and binding skeletons.\n parseDeformers() {\n const skeletons = {};\n const morphTargets = {};\n\n if (\"Deformer\" in fbxTree.Objects) {\n const DeformerNodes = fbxTree.Objects.Deformer;\n\n for (const nodeID in DeformerNodes) {\n const deformerNode = DeformerNodes[nodeID];\n\n const relationships = connections.get(parseInt(nodeID));\n\n if (deformerNode.attrType === \"Skin\") {\n const skeleton = this.parseSkeleton(relationships, DeformerNodes);\n skeleton.ID = nodeID;\n\n if (relationships.parents.length > 1)\n console.warn(\n \"THREE.FBXLoader: skeleton attached to more than one geometry is not supported.\"\n );\n skeleton.geometryID = relationships.parents[0].ID;\n\n skeletons[nodeID] = skeleton;\n } else if (deformerNode.attrType === \"BlendShape\") {\n const morphTarget = {\n id: nodeID,\n };\n\n morphTarget.rawTargets = this.parseMorphTargets(\n relationships,\n DeformerNodes\n );\n morphTarget.id = nodeID;\n\n if (relationships.parents.length > 1)\n console.warn(\n \"THREE.FBXLoader: morph target attached to more than one geometry is not supported.\"\n );\n\n morphTargets[nodeID] = morphTarget;\n }\n }\n }\n\n return {\n skeletons: skeletons,\n morphTargets: morphTargets,\n };\n }\n\n // Parse single nodes in FBXTree.Objects.Deformer\n // The top level skeleton node has type 'Skin' and sub nodes have type 'Cluster'\n // Each skin node represents a skeleton and each cluster node represents a bone\n parseSkeleton(relationships, deformerNodes) {\n const rawBones = [];\n\n relationships.children.forEach(function (child) {\n const boneNode = deformerNodes[child.ID];\n\n if (boneNode.attrType !== \"Cluster\") return;\n\n const rawBone = {\n ID: child.ID,\n indices: [],\n weights: [],\n transformLink: new Matrix4().fromArray(boneNode.TransformLink.a),\n // transform: new Matrix4().fromArray( boneNode.Transform.a ),\n // linkMode: boneNode.Mode,\n };\n\n if (\"Indexes\" in boneNode) {\n rawBone.indices = boneNode.Indexes.a;\n rawBone.weights = boneNode.Weights.a;\n }\n\n rawBones.push(rawBone);\n });\n\n return {\n rawBones: rawBones,\n bones: [],\n };\n }\n\n // The top level morph deformer node has type \"BlendShape\" and sub nodes have type \"BlendShapeChannel\"\n parseMorphTargets(relationships, deformerNodes) {\n const rawMorphTargets = [];\n\n for (let i = 0; i < relationships.children.length; i++) {\n const child = relationships.children[i];\n\n const morphTargetNode = deformerNodes[child.ID];\n\n const rawMorphTarget = {\n name: morphTargetNode.attrName,\n initialWeight: morphTargetNode.DeformPercent,\n id: morphTargetNode.id,\n fullWeights: morphTargetNode.FullWeights.a,\n };\n\n if (morphTargetNode.attrType !== \"BlendShapeChannel\") return;\n\n rawMorphTarget.geoID = connections\n .get(parseInt(child.ID))\n .children.filter(function (child) {\n return child.relationship === undefined;\n })[0].ID;\n\n rawMorphTargets.push(rawMorphTarget);\n }\n\n return rawMorphTargets;\n }\n\n // create the main Group() to be returned by the loader\n parseScene(deformers, geometryMap, materialMap) {\n sceneGraph = new Group();\n\n const modelMap = this.parseModels(\n deformers.skeletons,\n geometryMap,\n materialMap\n );\n\n const modelNodes = fbxTree.Objects.Model;\n\n const scope = this;\n modelMap.forEach(function (model) {\n const modelNode = modelNodes[model.ID];\n scope.setLookAtProperties(model, modelNode);\n\n const parentConnections = connections.get(model.ID).parents;\n\n parentConnections.forEach(function (connection) {\n const parent = modelMap.get(connection.ID);\n if (parent !== undefined) parent.add(model);\n });\n\n if (model.parent === null) {\n sceneGraph.add(model);\n }\n });\n\n this.bindSkeleton(deformers.skeletons, geometryMap, modelMap);\n\n this.createAmbientLight();\n\n sceneGraph.traverse(function (node) {\n if (node.userData.transformData) {\n if (node.parent) {\n node.userData.transformData.parentMatrix = node.parent.matrix;\n node.userData.transformData.parentMatrixWorld =\n node.parent.matrixWorld;\n }\n\n const transform = generateTransform(node.userData.transformData);\n\n node.applyMatrix4(transform);\n node.updateWorldMatrix();\n }\n });\n\n const animations = new AnimationParser().parse();\n\n // if all the models where already combined in a single group, just return that\n if (sceneGraph.children.length === 1 && sceneGraph.children[0].isGroup) {\n sceneGraph.children[0].animations = animations;\n sceneGraph = sceneGraph.children[0];\n }\n\n sceneGraph.animations = animations;\n }\n\n // parse nodes in FBXTree.Objects.Model\n parseModels(skeletons, geometryMap, materialMap) {\n const modelMap = new Map();\n const modelNodes = fbxTree.Objects.Model;\n\n for (const nodeID in modelNodes) {\n const id = parseInt(nodeID);\n const node = modelNodes[nodeID];\n const relationships = connections.get(id);\n\n let model = this.buildSkeleton(\n relationships,\n skeletons,\n id,\n node.attrName\n );\n\n if (!model) {\n switch (node.attrType) {\n case \"Camera\":\n model = this.createCamera(relationships);\n break;\n case \"Light\":\n model = this.createLight(relationships);\n break;\n case \"Mesh\":\n model = this.createMesh(relationships, geometryMap, materialMap);\n break;\n case \"NurbsCurve\":\n model = this.createCurve(relationships, geometryMap);\n break;\n case \"LimbNode\":\n case \"Root\":\n model = new Bone();\n break;\n case \"Null\":\n default:\n model = new Group();\n break;\n }\n\n model.name = node.attrName\n ? PropertyBinding.sanitizeNodeName(node.attrName)\n : \"\";\n\n model.ID = id;\n }\n\n this.getTransformData(model, node);\n modelMap.set(id, model);\n }\n\n return modelMap;\n }\n\n buildSkeleton(relationships, skeletons, id, name) {\n let bone = null;\n\n relationships.parents.forEach(function (parent) {\n for (const ID in skeletons) {\n const skeleton = skeletons[ID];\n\n skeleton.rawBones.forEach(function (rawBone, i) {\n if (rawBone.ID === parent.ID) {\n const subBone = bone;\n bone = new Bone();\n\n bone.matrixWorld.copy(rawBone.transformLink);\n\n // set name and id here - otherwise in cases where \"subBone\" is created it will not have a name / id\n\n bone.name = name ? PropertyBinding.sanitizeNodeName(name) : \"\";\n bone.ID = id;\n\n skeleton.bones[i] = bone;\n\n // In cases where a bone is shared between multiple meshes\n // duplicate the bone here and and it as a child of the first bone\n if (subBone !== null) {\n bone.add(subBone);\n }\n }\n });\n }\n });\n\n return bone;\n }\n\n // create a PerspectiveCamera or OrthographicCamera\n createCamera(relationships) {\n let model;\n let cameraAttribute;\n\n relationships.children.forEach(function (child) {\n const attr = fbxTree.Objects.NodeAttribute[child.ID];\n\n if (attr !== undefined) {\n cameraAttribute = attr;\n }\n });\n\n if (cameraAttribute === undefined) {\n model = new Object3D();\n } else {\n let type = 0;\n if (\n cameraAttribute.CameraProjectionType !== undefined &&\n cameraAttribute.CameraProjectionType.value === 1\n ) {\n type = 1;\n }\n\n let nearClippingPlane = 1;\n if (cameraAttribute.NearPlane !== undefined) {\n nearClippingPlane = cameraAttribute.NearPlane.value / 1000;\n }\n\n let farClippingPlane = 1000;\n if (cameraAttribute.FarPlane !== undefined) {\n farClippingPlane = cameraAttribute.FarPlane.value / 1000;\n }\n\n let width = window.innerWidth;\n let height = window.innerHeight;\n\n if (\n cameraAttribute.AspectWidth !== undefined &&\n cameraAttribute.AspectHeight !== undefined\n ) {\n width = cameraAttribute.AspectWidth.value;\n height = cameraAttribute.AspectHeight.value;\n }\n\n const aspect = width / height;\n\n let fov = 45;\n if (cameraAttribute.FieldOfView !== undefined) {\n fov = cameraAttribute.FieldOfView.value;\n }\n\n const focalLength = cameraAttribute.FocalLength\n ? cameraAttribute.FocalLength.value\n : null;\n\n switch (type) {\n case 0: // Perspective\n model = new PerspectiveCamera(\n fov,\n aspect,\n nearClippingPlane,\n farClippingPlane\n );\n if (focalLength !== null) model.setFocalLength(focalLength);\n break;\n\n case 1: // Orthographic\n model = new OrthographicCamera(\n -width / 2,\n width / 2,\n height / 2,\n -height / 2,\n nearClippingPlane,\n farClippingPlane\n );\n break;\n\n default:\n console.warn(\"THREE.FBXLoader: Unknown camera type \" + type + \".\");\n model = new Object3D();\n break;\n }\n }\n\n return model;\n }\n\n // Create a DirectionalLight, PointLight or SpotLight\n createLight(relationships) {\n let model;\n let lightAttribute;\n\n relationships.children.forEach(function (child) {\n const attr = fbxTree.Objects.NodeAttribute[child.ID];\n\n if (attr !== undefined) {\n lightAttribute = attr;\n }\n });\n\n if (lightAttribute === undefined) {\n model = new Object3D();\n } else {\n let type;\n\n // LightType can be undefined for Point lights\n if (lightAttribute.LightType === undefined) {\n type = 0;\n } else {\n type = lightAttribute.LightType.value;\n }\n\n let color = 0xffffff;\n\n if (lightAttribute.Color !== undefined) {\n color = new Color()\n .fromArray(lightAttribute.Color.value)\n .convertSRGBToLinear();\n }\n\n let intensity =\n lightAttribute.Intensity === undefined\n ? 1\n : lightAttribute.Intensity.value / 100;\n\n // light disabled\n if (\n lightAttribute.CastLightOnObject !== undefined &&\n lightAttribute.CastLightOnObject.value === 0\n ) {\n intensity = 0;\n }\n\n let distance = 0;\n if (lightAttribute.FarAttenuationEnd !== undefined) {\n if (\n lightAttribute.EnableFarAttenuation !== undefined &&\n lightAttribute.EnableFarAttenuation.value === 0\n ) {\n distance = 0;\n } else {\n distance = lightAttribute.FarAttenuationEnd.value;\n }\n }\n\n // TODO: could this be calculated linearly from FarAttenuationStart to FarAttenuationEnd?\n const decay = 1;\n\n switch (type) {\n case 0: // Point\n model = new PointLight(color, intensity, distance, decay);\n break;\n\n case 1: // Directional\n model = new DirectionalLight(color, intensity);\n break;\n\n case 2: // Spot\n let angle = Math.PI / 3;\n\n if (lightAttribute.InnerAngle !== undefined) {\n angle = MathUtils.degToRad(lightAttribute.InnerAngle.value);\n }\n\n let penumbra = 0;\n if (lightAttribute.OuterAngle !== undefined) {\n // TODO: this is not correct - FBX calculates outer and inner angle in degrees\n // with OuterAngle > InnerAngle && OuterAngle <= Math.PI\n // while three.js uses a penumbra between (0, 1) to attenuate the inner angle\n penumbra = MathUtils.degToRad(lightAttribute.OuterAngle.value);\n penumbra = Math.max(penumbra, 1);\n }\n\n model = new SpotLight(\n color,\n intensity,\n distance,\n angle,\n penumbra,\n decay\n );\n break;\n\n default:\n console.warn(\n \"THREE.FBXLoader: Unknown light type \" +\n lightAttribute.LightType.value +\n \", defaulting to a PointLight.\"\n );\n model = new PointLight(color, intensity);\n break;\n }\n\n if (\n lightAttribute.CastShadows !== undefined &&\n lightAttribute.CastShadows.value === 1\n ) {\n model.castShadow = true;\n }\n }\n\n return model;\n }\n\n createMesh(relationships, geometryMap, materialMap) {\n let model;\n let geometry = null;\n let material = null;\n const materials = [];\n\n // get geometry and materials(s) from connections\n relationships.children.forEach(function (child) {\n if (geometryMap.has(child.ID)) {\n geometry = geometryMap.get(child.ID);\n }\n\n if (materialMap.has(child.ID)) {\n materials.push(materialMap.get(child.ID));\n }\n });\n\n if (materials.length > 1) {\n material = materials;\n } else if (materials.length > 0) {\n material = materials[0];\n } else {\n material = new MeshPhongMaterial({\n name: Loader.DEFAULT_MATERIAL_NAME,\n color: 0xcccccc,\n });\n materials.push(material);\n }\n\n if (\"color\" in geometry.attributes) {\n materials.forEach(function (material) {\n material.vertexColors = true;\n });\n }\n\n if (geometry.FBX_Deformer) {\n model = new SkinnedMesh(geometry, material);\n model.normalizeSkinWeights();\n } else {\n model = new Mesh(geometry, material);\n }\n\n return model;\n }\n\n createCurve(relationships, geometryMap) {\n const geometry = relationships.children.reduce(function (geo, child) {\n if (geometryMap.has(child.ID)) geo = geometryMap.get(child.ID);\n\n return geo;\n }, null);\n\n // FBX does not list materials for Nurbs lines, so we'll just put our own in here.\n const material = new LineBasicMaterial({\n name: Loader.DEFAULT_MATERIAL_NAME,\n color: 0x3300ff,\n linewidth: 1,\n });\n return new Line(geometry, material);\n }\n\n // parse the model node for transform data\n getTransformData(model, modelNode) {\n const transformData = {};\n\n if (\"InheritType\" in modelNode)\n transformData.inheritType = parseInt(modelNode.InheritType.value);\n\n if (\"RotationOrder\" in modelNode)\n transformData.eulerOrder = getEulerOrder(modelNode.RotationOrder.value);\n else transformData.eulerOrder = \"ZYX\";\n\n if (\"Lcl_Translation\" in modelNode)\n transformData.translation = modelNode.Lcl_Translation.value;\n\n if (\"PreRotation\" in modelNode)\n transformData.preRotation = modelNode.PreRotation.value;\n if (\"Lcl_Rotation\" in modelNode)\n transformData.rotation = modelNode.Lcl_Rotation.value;\n if (\"PostRotation\" in modelNode)\n transformData.postRotation = modelNode.PostRotation.value;\n\n if (\"Lcl_Scaling\" in modelNode)\n transformData.scale = modelNode.Lcl_Scaling.value;\n\n if (\"ScalingOffset\" in modelNode)\n transformData.scalingOffset = modelNode.ScalingOffset.value;\n if (\"ScalingPivot\" in modelNode)\n transformData.scalingPivot = modelNode.ScalingPivot.value;\n\n if (\"RotationOffset\" in modelNode)\n transformData.rotationOffset = modelNode.RotationOffset.value;\n if (\"RotationPivot\" in modelNode)\n transformData.rotationPivot = modelNode.RotationPivot.value;\n\n model.userData.transformData = transformData;\n }\n\n setLookAtProperties(model, modelNode) {\n if (\"LookAtProperty\" in modelNode) {\n const children = connections.get(model.ID).children;\n\n children.forEach(function (child) {\n if (child.relationship === \"LookAtProperty\") {\n const lookAtTarget = fbxTree.Objects.Model[child.ID];\n\n if (\"Lcl_Translation\" in lookAtTarget) {\n const pos = lookAtTarget.Lcl_Translation.value;\n\n // DirectionalLight, SpotLight\n if (model.target !== undefined) {\n model.target.position.fromArray(pos);\n sceneGraph.add(model.target);\n } else {\n // Cameras and other Object3Ds\n\n model.lookAt(new Vector3().fromArray(pos));\n }\n }\n }\n });\n }\n }\n\n bindSkeleton(skeletons, geometryMap, modelMap) {\n const bindMatrices = this.parsePoseNodes();\n\n for (const ID in skeletons) {\n const skeleton = skeletons[ID];\n\n const parents = connections.get(parseInt(skeleton.ID)).parents;\n\n parents.forEach(function (parent) {\n if (geometryMap.has(parent.ID)) {\n const geoID = parent.ID;\n const geoRelationships = connections.get(geoID);\n\n geoRelationships.parents.forEach(function (geoConnParent) {\n if (modelMap.has(geoConnParent.ID)) {\n const model = modelMap.get(geoConnParent.ID);\n\n model.bind(\n new Skeleton(skeleton.bones),\n bindMatrices[geoConnParent.ID]\n );\n }\n });\n }\n });\n }\n }\n\n parsePoseNodes() {\n const bindMatrices = {};\n\n if (\"Pose\" in fbxTree.Objects) {\n const BindPoseNode = fbxTree.Objects.Pose;\n\n for (const nodeID in BindPoseNode) {\n if (\n BindPoseNode[nodeID].attrType === \"BindPose\" &&\n BindPoseNode[nodeID].NbPoseNodes > 0\n ) {\n const poseNodes = BindPoseNode[nodeID].PoseNode;\n\n if (Array.isArray(poseNodes)) {\n poseNodes.forEach(function (poseNode) {\n bindMatrices[poseNode.Node] = new Matrix4().fromArray(\n poseNode.Matrix.a\n );\n });\n } else {\n bindMatrices[poseNodes.Node] = new Matrix4().fromArray(\n poseNodes.Matrix.a\n );\n }\n }\n }\n }\n\n return bindMatrices;\n }\n\n // Parse ambient color in FBXTree.GlobalSettings - if it's not set to black (default), create an ambient light\n createAmbientLight() {\n if (\n \"GlobalSettings\" in fbxTree &&\n \"AmbientColor\" in fbxTree.GlobalSettings\n ) {\n const ambientColor = fbxTree.GlobalSettings.AmbientColor.value;\n const r = ambientColor[0];\n const g = ambientColor[1];\n const b = ambientColor[2];\n\n if (r !== 0 || g !== 0 || b !== 0) {\n const color = new Color(r, g, b).convertSRGBToLinear();\n sceneGraph.add(new AmbientLight(color, 1));\n }\n }\n }\n}\n\n// parse Geometry data from FBXTree and return map of BufferGeometries\nclass GeometryParser {\n constructor() {\n this.negativeMaterialIndices = false;\n }\n\n // Parse nodes in FBXTree.Objects.Geometry\n parse(deformers) {\n const geometryMap = new Map();\n\n if (\"Geometry\" in fbxTree.Objects) {\n const geoNodes = fbxTree.Objects.Geometry;\n\n for (const nodeID in geoNodes) {\n const relationships = connections.get(parseInt(nodeID));\n const geo = this.parseGeometry(\n relationships,\n geoNodes[nodeID],\n deformers\n );\n\n geometryMap.set(parseInt(nodeID), geo);\n }\n }\n\n // report warnings\n\n if (this.negativeMaterialIndices === true) {\n console.warn(\n \"THREE.FBXLoader: The FBX file contains invalid (negative) material indices. The asset might not render as expected.\"\n );\n }\n\n return geometryMap;\n }\n\n // Parse single node in FBXTree.Objects.Geometry\n parseGeometry(relationships, geoNode, deformers) {\n switch (geoNode.attrType) {\n case \"Mesh\":\n return this.parseMeshGeometry(relationships, geoNode, deformers);\n break;\n\n case \"NurbsCurve\":\n return this.parseNurbsGeometry(geoNode);\n break;\n }\n }\n\n // Parse single node mesh geometry in FBXTree.Objects.Geometry\n parseMeshGeometry(relationships, geoNode, deformers) {\n const skeletons = deformers.skeletons;\n const morphTargets = [];\n\n const modelNodes = relationships.parents.map(function (parent) {\n return fbxTree.Objects.Model[parent.ID];\n });\n\n // don't create geometry if it is not associated with any models\n if (modelNodes.length === 0) return;\n\n const skeleton = relationships.children.reduce(function (skeleton, child) {\n if (skeletons[child.ID] !== undefined) skeleton = skeletons[child.ID];\n\n return skeleton;\n }, null);\n\n relationships.children.forEach(function (child) {\n if (deformers.morphTargets[child.ID] !== undefined) {\n morphTargets.push(deformers.morphTargets[child.ID]);\n }\n });\n\n // Assume one model and get the preRotation from that\n // if there is more than one model associated with the geometry this may cause problems\n const modelNode = modelNodes[0];\n\n const transformData = {};\n\n if (\"RotationOrder\" in modelNode)\n transformData.eulerOrder = getEulerOrder(modelNode.RotationOrder.value);\n if (\"InheritType\" in modelNode)\n transformData.inheritType = parseInt(modelNode.InheritType.value);\n\n if (\"GeometricTranslation\" in modelNode)\n transformData.translation = modelNode.GeometricTranslation.value;\n if (\"GeometricRotation\" in modelNode)\n transformData.rotation = modelNode.GeometricRotation.value;\n if (\"GeometricScaling\" in modelNode)\n transformData.scale = modelNode.GeometricScaling.value;\n\n const transform = generateTransform(transformData);\n\n return this.genGeometry(geoNode, skeleton, morphTargets, transform);\n }\n\n // Generate a BufferGeometry from a node in FBXTree.Objects.Geometry\n genGeometry(geoNode, skeleton, morphTargets, preTransform) {\n const geo = new BufferGeometry();\n if (geoNode.attrName) geo.name = geoNode.attrName;\n\n const geoInfo = this.parseGeoNode(geoNode, skeleton);\n const buffers = this.genBuffers(geoInfo);\n\n const positionAttribute = new Float32BufferAttribute(buffers.vertex, 3);\n\n positionAttribute.applyMatrix4(preTransform);\n\n geo.setAttribute(\"position\", positionAttribute);\n\n if (buffers.colors.length > 0) {\n geo.setAttribute(\"color\", new Float32BufferAttribute(buffers.colors, 3));\n }\n\n if (skeleton) {\n geo.setAttribute(\n \"skinIndex\",\n new Uint16BufferAttribute(buffers.weightsIndices, 4)\n );\n\n geo.setAttribute(\n \"skinWeight\",\n new Float32BufferAttribute(buffers.vertexWeights, 4)\n );\n\n // used later to bind the skeleton to the model\n geo.FBX_Deformer = skeleton;\n }\n\n if (buffers.normal.length > 0) {\n const normalMatrix = new Matrix3().getNormalMatrix(preTransform);\n\n const normalAttribute = new Float32BufferAttribute(buffers.normal, 3);\n normalAttribute.applyNormalMatrix(normalMatrix);\n\n geo.setAttribute(\"normal\", normalAttribute);\n }\n\n buffers.uvs.forEach(function (uvBuffer, i) {\n const name = i === 0 ? \"uv\" : `uv${i}`;\n\n geo.setAttribute(name, new Float32BufferAttribute(buffers.uvs[i], 2));\n });\n\n if (geoInfo.material && geoInfo.material.mappingType !== \"AllSame\") {\n // Convert the material indices of each vertex into rendering groups on the geometry.\n let prevMaterialIndex = buffers.materialIndex[0];\n let startIndex = 0;\n\n buffers.materialIndex.forEach(function (currentIndex, i) {\n if (currentIndex !== prevMaterialIndex) {\n geo.addGroup(startIndex, i - startIndex, prevMaterialIndex);\n\n prevMaterialIndex = currentIndex;\n startIndex = i;\n }\n });\n\n // the loop above doesn't add the last group, do that here.\n if (geo.groups.length > 0) {\n const lastGroup = geo.groups[geo.groups.length - 1];\n const lastIndex = lastGroup.start + lastGroup.count;\n\n if (lastIndex !== buffers.materialIndex.length) {\n geo.addGroup(\n lastIndex,\n buffers.materialIndex.length - lastIndex,\n prevMaterialIndex\n );\n }\n }\n\n // case where there are multiple materials but the whole geometry is only\n // using one of them\n if (geo.groups.length === 0) {\n geo.addGroup(0, buffers.materialIndex.length, buffers.materialIndex[0]);\n }\n }\n\n this.addMorphTargets(geo, geoNode, morphTargets, preTransform);\n\n return geo;\n }\n\n parseGeoNode(geoNode, skeleton) {\n const geoInfo = {};\n\n geoInfo.vertexPositions =\n geoNode.Vertices !== undefined ? geoNode.Vertices.a : [];\n geoInfo.vertexIndices =\n geoNode.PolygonVertexIndex !== undefined\n ? geoNode.PolygonVertexIndex.a\n : [];\n\n if (geoNode.LayerElementColor) {\n geoInfo.color = this.parseVertexColors(geoNode.LayerElementColor[0]);\n }\n\n if (geoNode.LayerElementMaterial) {\n geoInfo.material = this.parseMaterialIndices(\n geoNode.LayerElementMaterial[0]\n );\n }\n\n if (geoNode.LayerElementNormal) {\n geoInfo.normal = this.parseNormals(geoNode.LayerElementNormal[0]);\n }\n\n if (geoNode.LayerElementUV) {\n geoInfo.uv = [];\n\n let i = 0;\n while (geoNode.LayerElementUV[i]) {\n if (geoNode.LayerElementUV[i].UV) {\n geoInfo.uv.push(this.parseUVs(geoNode.LayerElementUV[i]));\n }\n\n i++;\n }\n }\n\n geoInfo.weightTable = {};\n\n if (skeleton !== null) {\n geoInfo.skeleton = skeleton;\n\n skeleton.rawBones.forEach(function (rawBone, i) {\n // loop over the bone's vertex indices and weights\n rawBone.indices.forEach(function (index, j) {\n if (geoInfo.weightTable[index] === undefined)\n geoInfo.weightTable[index] = [];\n\n geoInfo.weightTable[index].push({\n id: i,\n weight: rawBone.weights[j],\n });\n });\n });\n }\n\n return geoInfo;\n }\n\n genBuffers(geoInfo) {\n const buffers = {\n vertex: [],\n normal: [],\n colors: [],\n uvs: [],\n materialIndex: [],\n vertexWeights: [],\n weightsIndices: [],\n };\n\n let polygonIndex = 0;\n let faceLength = 0;\n let displayedWeightsWarning = false;\n\n // these will hold data for a single face\n let facePositionIndexes = [];\n let faceNormals = [];\n let faceColors = [];\n let faceUVs = [];\n let faceWeights = [];\n let faceWeightIndices = [];\n\n const scope = this;\n geoInfo.vertexIndices.forEach(function (vertexIndex, polygonVertexIndex) {\n let materialIndex;\n let endOfFace = false;\n\n // Face index and vertex index arrays are combined in a single array\n // A cube with quad faces looks like this:\n // PolygonVertexIndex: *24 {\n // 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\n // }\n // Negative numbers mark the end of a face - first face here is 0, 1, 3, -3\n // to find index of last vertex bit shift the index: ^ - 1\n if (vertexIndex < 0) {\n vertexIndex = vertexIndex ^ -1; // equivalent to ( x * -1 ) - 1\n endOfFace = true;\n }\n\n let weightIndices = [];\n let weights = [];\n\n facePositionIndexes.push(\n vertexIndex * 3,\n vertexIndex * 3 + 1,\n vertexIndex * 3 + 2\n );\n\n if (geoInfo.color) {\n const data = getData(\n polygonVertexIndex,\n polygonIndex,\n vertexIndex,\n geoInfo.color\n );\n\n faceColors.push(data[0], data[1], data[2]);\n }\n\n if (geoInfo.skeleton) {\n if (geoInfo.weightTable[vertexIndex] !== undefined) {\n geoInfo.weightTable[vertexIndex].forEach(function (wt) {\n weights.push(wt.weight);\n weightIndices.push(wt.id);\n });\n }\n\n if (weights.length > 4) {\n if (!displayedWeightsWarning) {\n console.warn(\n \"THREE.FBXLoader: Vertex has more than 4 skinning weights assigned to vertex. Deleting additional weights.\"\n );\n displayedWeightsWarning = true;\n }\n\n const wIndex = [0, 0, 0, 0];\n const Weight = [0, 0, 0, 0];\n\n weights.forEach(function (weight, weightIndex) {\n let currentWeight = weight;\n let currentIndex = weightIndices[weightIndex];\n\n Weight.forEach(function (\n comparedWeight,\n comparedWeightIndex,\n comparedWeightArray\n ) {\n if (currentWeight > comparedWeight) {\n comparedWeightArray[comparedWeightIndex] = currentWeight;\n currentWeight = comparedWeight;\n\n const tmp = wIndex[comparedWeightIndex];\n wIndex[comparedWeightIndex] = currentIndex;\n currentIndex = tmp;\n }\n });\n });\n\n weightIndices = wIndex;\n weights = Weight;\n }\n\n // if the weight array is shorter than 4 pad with 0s\n while (weights.length < 4) {\n weights.push(0);\n weightIndices.push(0);\n }\n\n for (let i = 0; i < 4; ++i) {\n faceWeights.push(weights[i]);\n faceWeightIndices.push(weightIndices[i]);\n }\n }\n\n if (geoInfo.normal) {\n const data = getData(\n polygonVertexIndex,\n polygonIndex,\n vertexIndex,\n geoInfo.normal\n );\n\n faceNormals.push(data[0], data[1], data[2]);\n }\n\n if (geoInfo.material && geoInfo.material.mappingType !== \"AllSame\") {\n materialIndex = getData(\n polygonVertexIndex,\n polygonIndex,\n vertexIndex,\n geoInfo.material\n )[0];\n\n if (materialIndex < 0) {\n scope.negativeMaterialIndices = true;\n materialIndex = 0; // fallback\n }\n }\n\n if (geoInfo.uv) {\n geoInfo.uv.forEach(function (uv, i) {\n const data = getData(\n polygonVertexIndex,\n polygonIndex,\n vertexIndex,\n uv\n );\n\n if (faceUVs[i] === undefined) {\n faceUVs[i] = [];\n }\n\n faceUVs[i].push(data[0]);\n faceUVs[i].push(data[1]);\n });\n }\n\n faceLength++;\n\n if (endOfFace) {\n if (faceLength > 4)\n console.warn(\n \"THREE.FBXLoader: Polygons with more than four sides are not supported. Make sure to triangulate the geometry during export.\"\n );\n\n scope.genFace(\n buffers,\n geoInfo,\n facePositionIndexes,\n materialIndex,\n faceNormals,\n faceColors,\n faceUVs,\n faceWeights,\n faceWeightIndices,\n faceLength\n );\n\n polygonIndex++;\n faceLength = 0;\n\n // reset arrays for the next face\n facePositionIndexes = [];\n faceNormals = [];\n faceColors = [];\n faceUVs = [];\n faceWeights = [];\n faceWeightIndices = [];\n }\n });\n\n return buffers;\n }\n\n // Generate data for a single face in a geometry. If the face is a quad then split it into 2 tris\n genFace(\n buffers,\n geoInfo,\n facePositionIndexes,\n materialIndex,\n faceNormals,\n faceColors,\n faceUVs,\n faceWeights,\n faceWeightIndices,\n faceLength\n ) {\n for (let i = 2; i < faceLength; i++) {\n buffers.vertex.push(geoInfo.vertexPositions[facePositionIndexes[0]]);\n buffers.vertex.push(geoInfo.vertexPositions[facePositionIndexes[1]]);\n buffers.vertex.push(geoInfo.vertexPositions[facePositionIndexes[2]]);\n\n buffers.vertex.push(\n geoInfo.vertexPositions[facePositionIndexes[(i - 1) * 3]]\n );\n buffers.vertex.push(\n geoInfo.vertexPositions[facePositionIndexes[(i - 1) * 3 + 1]]\n );\n buffers.vertex.push(\n geoInfo.vertexPositions[facePositionIndexes[(i - 1) * 3 + 2]]\n );\n\n buffers.vertex.push(geoInfo.vertexPositions[facePositionIndexes[i * 3]]);\n buffers.vertex.push(\n geoInfo.vertexPositions[facePositionIndexes[i * 3 + 1]]\n );\n buffers.vertex.push(\n geoInfo.vertexPositions[facePositionIndexes[i * 3 + 2]]\n );\n\n if (geoInfo.skeleton) {\n buffers.vertexWeights.push(faceWeights[0]);\n buffers.vertexWeights.push(faceWeights[1]);\n buffers.vertexWeights.push(faceWeights[2]);\n buffers.vertexWeights.push(faceWeights[3]);\n\n buffers.vertexWeights.push(faceWeights[(i - 1) * 4]);\n buffers.vertexWeights.push(faceWeights[(i - 1) * 4 + 1]);\n buffers.vertexWeights.push(faceWeights[(i - 1) * 4 + 2]);\n buffers.vertexWeights.push(faceWeights[(i - 1) * 4 + 3]);\n\n buffers.vertexWeights.push(faceWeights[i * 4]);\n buffers.vertexWeights.push(faceWeights[i * 4 + 1]);\n buffers.vertexWeights.push(faceWeights[i * 4 + 2]);\n buffers.vertexWeights.push(faceWeights[i * 4 + 3]);\n\n buffers.weightsIndices.push(faceWeightIndices[0]);\n buffers.weightsIndices.push(faceWeightIndices[1]);\n buffers.weightsIndices.push(faceWeightIndices[2]);\n buffers.weightsIndices.push(faceWeightIndices[3]);\n\n buffers.weightsIndices.push(faceWeightIndices[(i - 1) * 4]);\n buffers.weightsIndices.push(faceWeightIndices[(i - 1) * 4 + 1]);\n buffers.weightsIndices.push(faceWeightIndices[(i - 1) * 4 + 2]);\n buffers.weightsIndices.push(faceWeightIndices[(i - 1) * 4 + 3]);\n\n buffers.weightsIndices.push(faceWeightIndices[i * 4]);\n buffers.weightsIndices.push(faceWeightIndices[i * 4 + 1]);\n buffers.weightsIndices.push(faceWeightIndices[i * 4 + 2]);\n buffers.weightsIndices.push(faceWeightIndices[i * 4 + 3]);\n }\n\n if (geoInfo.color) {\n buffers.colors.push(faceColors[0]);\n buffers.colors.push(faceColors[1]);\n buffers.colors.push(faceColors[2]);\n\n buffers.colors.push(faceColors[(i - 1) * 3]);\n buffers.colors.push(faceColors[(i - 1) * 3 + 1]);\n buffers.colors.push(faceColors[(i - 1) * 3 + 2]);\n\n buffers.colors.push(faceColors[i * 3]);\n buffers.colors.push(faceColors[i * 3 + 1]);\n buffers.colors.push(faceColors[i * 3 + 2]);\n }\n\n if (geoInfo.material && geoInfo.material.mappingType !== \"AllSame\") {\n buffers.materialIndex.push(materialIndex);\n buffers.materialIndex.push(materialIndex);\n buffers.materialIndex.push(materialIndex);\n }\n\n if (geoInfo.normal) {\n buffers.normal.push(faceNormals[0]);\n buffers.normal.push(faceNormals[1]);\n buffers.normal.push(faceNormals[2]);\n\n buffers.normal.push(faceNormals[(i - 1) * 3]);\n buffers.normal.push(faceNormals[(i - 1) * 3 + 1]);\n buffers.normal.push(faceNormals[(i - 1) * 3 + 2]);\n\n buffers.normal.push(faceNormals[i * 3]);\n buffers.normal.push(faceNormals[i * 3 + 1]);\n buffers.normal.push(faceNormals[i * 3 + 2]);\n }\n\n if (geoInfo.uv) {\n geoInfo.uv.forEach(function (uv, j) {\n if (buffers.uvs[j] === undefined) buffers.uvs[j] = [];\n\n buffers.uvs[j].push(faceUVs[j][0]);\n buffers.uvs[j].push(faceUVs[j][1]);\n\n buffers.uvs[j].push(faceUVs[j][(i - 1) * 2]);\n buffers.uvs[j].push(faceUVs[j][(i - 1) * 2 + 1]);\n\n buffers.uvs[j].push(faceUVs[j][i * 2]);\n buffers.uvs[j].push(faceUVs[j][i * 2 + 1]);\n });\n }\n }\n }\n\n addMorphTargets(parentGeo, parentGeoNode, morphTargets, preTransform) {\n if (morphTargets.length === 0) return;\n\n parentGeo.morphTargetsRelative = true;\n\n parentGeo.morphAttributes.position = [];\n // parentGeo.morphAttributes.normal = []; // not implemented\n\n const scope = this;\n morphTargets.forEach(function (morphTarget) {\n morphTarget.rawTargets.forEach(function (rawTarget) {\n const morphGeoNode = fbxTree.Objects.Geometry[rawTarget.geoID];\n\n if (morphGeoNode !== undefined) {\n scope.genMorphGeometry(\n parentGeo,\n parentGeoNode,\n morphGeoNode,\n preTransform,\n rawTarget.name\n );\n }\n });\n });\n }\n\n // a morph geometry node is similar to a standard node, and the node is also contained\n // in FBXTree.Objects.Geometry, however it can only have attributes for position, normal\n // and a special attribute Index defining which vertices of the original geometry are affected\n // Normal and position attributes only have data for the vertices that are affected by the morph\n genMorphGeometry(parentGeo, parentGeoNode, morphGeoNode, preTransform, name) {\n const vertexIndices =\n parentGeoNode.PolygonVertexIndex !== undefined\n ? parentGeoNode.PolygonVertexIndex.a\n : [];\n\n const morphPositionsSparse =\n morphGeoNode.Vertices !== undefined ? morphGeoNode.Vertices.a : [];\n const indices =\n morphGeoNode.Indexes !== undefined ? morphGeoNode.Indexes.a : [];\n\n const length = parentGeo.attributes.position.count * 3;\n const morphPositions = new Float32Array(length);\n\n for (let i = 0; i < indices.length; i++) {\n const morphIndex = indices[i] * 3;\n\n morphPositions[morphIndex] = morphPositionsSparse[i * 3];\n morphPositions[morphIndex + 1] = morphPositionsSparse[i * 3 + 1];\n morphPositions[morphIndex + 2] = morphPositionsSparse[i * 3 + 2];\n }\n\n // TODO: add morph normal support\n const morphGeoInfo = {\n vertexIndices: vertexIndices,\n vertexPositions: morphPositions,\n };\n\n const morphBuffers = this.genBuffers(morphGeoInfo);\n\n const positionAttribute = new Float32BufferAttribute(\n morphBuffers.vertex,\n 3\n );\n positionAttribute.name = name || morphGeoNode.attrName;\n\n positionAttribute.applyMatrix4(preTransform);\n\n parentGeo.morphAttributes.position.push(positionAttribute);\n }\n\n // Parse normal from FBXTree.Objects.Geometry.LayerElementNormal if it exists\n parseNormals(NormalNode) {\n const mappingType = NormalNode.MappingInformationType;\n const referenceType = NormalNode.ReferenceInformationType;\n const buffer = NormalNode.Normals.a;\n let indexBuffer = [];\n if (referenceType === \"IndexToDirect\") {\n if (\"NormalIndex\" in NormalNode) {\n indexBuffer = NormalNode.NormalIndex.a;\n } else if (\"NormalsIndex\" in NormalNode) {\n indexBuffer = NormalNode.NormalsIndex.a;\n }\n }\n\n return {\n dataSize: 3,\n buffer: buffer,\n indices: indexBuffer,\n mappingType: mappingType,\n referenceType: referenceType,\n };\n }\n\n // Parse UVs from FBXTree.Objects.Geometry.LayerElementUV if it exists\n parseUVs(UVNode) {\n const mappingType = UVNode.MappingInformationType;\n const referenceType = UVNode.ReferenceInformationType;\n const buffer = UVNode.UV.a;\n let indexBuffer = [];\n if (referenceType === \"IndexToDirect\") {\n indexBuffer = UVNode.UVIndex.a;\n }\n\n return {\n dataSize: 2,\n buffer: buffer,\n indices: indexBuffer,\n mappingType: mappingType,\n referenceType: referenceType,\n };\n }\n\n // Parse Vertex Colors from FBXTree.Objects.Geometry.LayerElementColor if it exists\n parseVertexColors(ColorNode) {\n const mappingType = ColorNode.MappingInformationType;\n const referenceType = ColorNode.ReferenceInformationType;\n const buffer = ColorNode.Colors.a;\n let indexBuffer = [];\n if (referenceType === \"IndexToDirect\") {\n indexBuffer = ColorNode.ColorIndex.a;\n }\n\n for (let i = 0, c = new Color(); i < buffer.length; i += 4) {\n c.fromArray(buffer, i).convertSRGBToLinear().toArray(buffer, i);\n }\n\n return {\n dataSize: 4,\n buffer: buffer,\n indices: indexBuffer,\n mappingType: mappingType,\n referenceType: referenceType,\n };\n }\n\n // Parse mapping and material data in FBXTree.Objects.Geometry.LayerElementMaterial if it exists\n parseMaterialIndices(MaterialNode) {\n const mappingType = MaterialNode.MappingInformationType;\n const referenceType = MaterialNode.ReferenceInformationType;\n\n if (mappingType === \"NoMappingInformation\") {\n return {\n dataSize: 1,\n buffer: [0],\n indices: [0],\n mappingType: \"AllSame\",\n referenceType: referenceType,\n };\n }\n\n const materialIndexBuffer = MaterialNode.Materials.a;\n\n // Since materials are stored as indices, there's a bit of a mismatch between FBX and what\n // we expect.So we create an intermediate buffer that points to the index in the buffer,\n // for conforming with the other functions we've written for other data.\n const materialIndices = [];\n\n for (let i = 0; i < materialIndexBuffer.length; ++i) {\n materialIndices.push(i);\n }\n\n return {\n dataSize: 1,\n buffer: materialIndexBuffer,\n indices: materialIndices,\n mappingType: mappingType,\n referenceType: referenceType,\n };\n }\n\n // Generate a NurbGeometry from a node in FBXTree.Objects.Geometry\n parseNurbsGeometry(geoNode) {\n const order = parseInt(geoNode.Order);\n\n if (isNaN(order)) {\n console.error(\n \"THREE.FBXLoader: Invalid Order %s given for geometry ID: %s\",\n geoNode.Order,\n geoNode.id\n );\n return new BufferGeometry();\n }\n\n const degree = order - 1;\n\n const knots = geoNode.KnotVector.a;\n const controlPoints = [];\n const pointsValues = geoNode.Points.a;\n\n for (let i = 0, l = pointsValues.length; i < l; i += 4) {\n controlPoints.push(new Vector4().fromArray(pointsValues, i));\n }\n\n let startKnot, endKnot;\n\n if (geoNode.Form === \"Closed\") {\n controlPoints.push(controlPoints[0]);\n } else if (geoNode.Form === \"Periodic\") {\n startKnot = degree;\n endKnot = knots.length - 1 - startKnot;\n\n for (let i = 0; i < degree; ++i) {\n controlPoints.push(controlPoints[i]);\n }\n }\n\n const curve = new NURBSCurve(\n degree,\n knots,\n controlPoints,\n startKnot,\n endKnot\n );\n const points = curve.getPoints(controlPoints.length * 12);\n\n return new BufferGeometry().setFromPoints(points);\n }\n}\n\n// parse animation data from FBXTree\nclass AnimationParser {\n // take raw animation clips and turn them into three.js animation clips\n parse() {\n const animationClips = [];\n\n const rawClips = this.parseClips();\n\n if (rawClips !== undefined) {\n for (const key in rawClips) {\n const rawClip = rawClips[key];\n\n const clip = this.addClip(rawClip);\n\n animationClips.push(clip);\n }\n }\n\n return animationClips;\n }\n\n parseClips() {\n // since the actual transformation data is stored in FBXTree.Objects.AnimationCurve,\n // if this is undefined we can safely assume there are no animations\n if (fbxTree.Objects.AnimationCurve === undefined) return undefined;\n\n const curveNodesMap = this.parseAnimationCurveNodes();\n\n this.parseAnimationCurves(curveNodesMap);\n\n const layersMap = this.parseAnimationLayers(curveNodesMap);\n const rawClips = this.parseAnimStacks(layersMap);\n\n return rawClips;\n }\n\n // parse nodes in FBXTree.Objects.AnimationCurveNode\n // each AnimationCurveNode holds data for an animation transform for a model (e.g. left arm rotation )\n // and is referenced by an AnimationLayer\n parseAnimationCurveNodes() {\n const rawCurveNodes = fbxTree.Objects.AnimationCurveNode;\n\n const curveNodesMap = new Map();\n\n for (const nodeID in rawCurveNodes) {\n const rawCurveNode = rawCurveNodes[nodeID];\n\n if (rawCurveNode.attrName.match(/S|R|T|DeformPercent/) !== null) {\n const curveNode = {\n id: rawCurveNode.id,\n attr: rawCurveNode.attrName,\n curves: {},\n };\n\n curveNodesMap.set(curveNode.id, curveNode);\n }\n }\n\n return curveNodesMap;\n }\n\n // parse nodes in FBXTree.Objects.AnimationCurve and connect them up to\n // previously parsed AnimationCurveNodes. Each AnimationCurve holds data for a single animated\n // axis ( e.g. times and values of x rotation)\n parseAnimationCurves(curveNodesMap) {\n const rawCurves = fbxTree.Objects.AnimationCurve;\n\n // TODO: Many values are identical up to roundoff error, but won't be optimised\n // e.g. position times: [0, 0.4, 0. 8]\n // position values: [7.23538335023477e-7, 93.67518615722656, -0.9982695579528809, 7.23538335023477e-7, 93.67518615722656, -0.9982695579528809, 7.235384487103147e-7, 93.67520904541016, -0.9982695579528809]\n // clearly, this should be optimised to\n // times: [0], positions [7.23538335023477e-7, 93.67518615722656, -0.9982695579528809]\n // this shows up in nearly every FBX file, and generally time array is length > 100\n\n for (const nodeID in rawCurves) {\n const animationCurve = {\n id: rawCurves[nodeID].id,\n times: rawCurves[nodeID].KeyTime.a.map(convertFBXTimeToSeconds),\n values: rawCurves[nodeID].KeyValueFloat.a,\n };\n\n const relationships = connections.get(animationCurve.id);\n\n if (relationships !== undefined) {\n const animationCurveID = relationships.parents[0].ID;\n const animationCurveRelationship =\n relationships.parents[0].relationship;\n\n if (animationCurveRelationship.match(/X/)) {\n curveNodesMap.get(animationCurveID).curves[\"x\"] = animationCurve;\n } else if (animationCurveRelationship.match(/Y/)) {\n curveNodesMap.get(animationCurveID).curves[\"y\"] = animationCurve;\n } else if (animationCurveRelationship.match(/Z/)) {\n curveNodesMap.get(animationCurveID).curves[\"z\"] = animationCurve;\n } else if (\n animationCurveRelationship.match(/DeformPercent/) &&\n curveNodesMap.has(animationCurveID)\n ) {\n curveNodesMap.get(animationCurveID).curves[\"morph\"] = animationCurve;\n }\n }\n }\n }\n\n // parse nodes in FBXTree.Objects.AnimationLayer. Each layers holds references\n // to various AnimationCurveNodes and is referenced by an AnimationStack node\n // note: theoretically a stack can have multiple layers, however in practice there always seems to be one per stack\n parseAnimationLayers(curveNodesMap) {\n const rawLayers = fbxTree.Objects.AnimationLayer;\n\n const layersMap = new Map();\n\n for (const nodeID in rawLayers) {\n const layerCurveNodes = [];\n\n const connection = connections.get(parseInt(nodeID));\n\n if (connection !== undefined) {\n // all the animationCurveNodes used in the layer\n const children = connection.children;\n\n children.forEach(function (child, i) {\n if (curveNodesMap.has(child.ID)) {\n const curveNode = curveNodesMap.get(child.ID);\n\n // check that the curves are defined for at least one axis, otherwise ignore the curveNode\n if (\n curveNode.curves.x !== undefined ||\n curveNode.curves.y !== undefined ||\n curveNode.curves.z !== undefined\n ) {\n if (layerCurveNodes[i] === undefined) {\n const modelID = connections\n .get(child.ID)\n .parents.filter(function (parent) {\n return parent.relationship !== undefined;\n })[0].ID;\n\n if (modelID !== undefined) {\n const rawModel = fbxTree.Objects.Model[modelID.toString()];\n\n if (rawModel === undefined) {\n console.warn(\n \"THREE.FBXLoader: Encountered a unused curve.\",\n child\n );\n return;\n }\n\n const node = {\n modelName: rawModel.attrName\n ? PropertyBinding.sanitizeNodeName(rawModel.attrName)\n : \"\",\n ID: rawModel.id,\n initialPosition: [0, 0, 0],\n initialRotation: [0, 0, 0],\n initialScale: [1, 1, 1],\n };\n\n sceneGraph.traverse(function (child) {\n if (child.ID === rawModel.id) {\n node.transform = child.matrix;\n\n if (child.userData.transformData)\n node.eulerOrder =\n child.userData.transformData.eulerOrder;\n }\n });\n\n if (!node.transform) node.transform = new Matrix4();\n\n // if the animated model is pre rotated, we'll have to apply the pre rotations to every\n // animation value as well\n if (\"PreRotation\" in rawModel)\n node.preRotation = rawModel.PreRotation.value;\n if (\"PostRotation\" in rawModel)\n node.postRotation = rawModel.PostRotation.value;\n\n layerCurveNodes[i] = node;\n }\n }\n\n if (layerCurveNodes[i])\n layerCurveNodes[i][curveNode.attr] = curveNode;\n } else if (curveNode.curves.morph !== undefined) {\n if (layerCurveNodes[i] === undefined) {\n const deformerID = connections\n .get(child.ID)\n .parents.filter(function (parent) {\n return parent.relationship !== undefined;\n })[0].ID;\n\n const morpherID = connections.get(deformerID).parents[0].ID;\n const geoID = connections.get(morpherID).parents[0].ID;\n\n // assuming geometry is not used in more than one model\n const modelID = connections.get(geoID).parents[0].ID;\n\n const rawModel = fbxTree.Objects.Model[modelID];\n\n const node = {\n modelName: rawModel.attrName\n ? PropertyBinding.sanitizeNodeName(rawModel.attrName)\n : \"\",\n morphName: fbxTree.Objects.Deformer[deformerID].attrName,\n };\n\n layerCurveNodes[i] = node;\n }\n\n layerCurveNodes[i][curveNode.attr] = curveNode;\n }\n }\n });\n\n layersMap.set(parseInt(nodeID), layerCurveNodes);\n }\n }\n\n return layersMap;\n }\n\n // parse nodes in FBXTree.Objects.AnimationStack. These are the top level node in the animation\n // hierarchy. Each Stack node will be used to create a AnimationClip\n parseAnimStacks(layersMap) {\n const rawStacks = fbxTree.Objects.AnimationStack;\n\n // connect the stacks (clips) up to the layers\n const rawClips = {};\n\n for (const nodeID in rawStacks) {\n const children = connections.get(parseInt(nodeID)).children;\n\n if (children.length > 1) {\n // it seems like stacks will always be associated with a single layer. But just in case there are files\n // where there are multiple layers per stack, we'll display a warning\n console.warn(\n \"THREE.FBXLoader: Encountered an animation stack with multiple layers, this is currently not supported. Ignoring subsequent layers.\"\n );\n }\n\n const layer = layersMap.get(children[0].ID);\n\n rawClips[nodeID] = {\n name: rawStacks[nodeID].attrName,\n layer: layer,\n };\n }\n\n return rawClips;\n }\n\n addClip(rawClip) {\n let tracks = [];\n\n const scope = this;\n rawClip.layer.forEach(function (rawTracks) {\n tracks = tracks.concat(scope.generateTracks(rawTracks));\n });\n\n return new AnimationClip(rawClip.name, -1, tracks);\n }\n\n generateTracks(rawTracks) {\n const tracks = [];\n\n let initialPosition = new Vector3();\n let initialRotation = new Quaternion();\n let initialScale = new Vector3();\n\n if (rawTracks.transform)\n rawTracks.transform.decompose(\n initialPosition,\n initialRotation,\n initialScale\n );\n\n initialPosition = initialPosition.toArray();\n initialRotation = new Euler()\n .setFromQuaternion(initialRotation, rawTracks.eulerOrder)\n .toArray();\n initialScale = initialScale.toArray();\n\n if (\n rawTracks.T !== undefined &&\n Object.keys(rawTracks.T.curves).length > 0\n ) {\n const positionTrack = this.generateVectorTrack(\n rawTracks.modelName,\n rawTracks.T.curves,\n initialPosition,\n \"position\"\n );\n if (positionTrack !== undefined) tracks.push(positionTrack);\n }\n\n if (\n rawTracks.R !== undefined &&\n Object.keys(rawTracks.R.curves).length > 0\n ) {\n const rotationTrack = this.generateRotationTrack(\n rawTracks.modelName,\n rawTracks.R.curves,\n initialRotation,\n rawTracks.preRotation,\n rawTracks.postRotation,\n rawTracks.eulerOrder\n );\n if (rotationTrack !== undefined) tracks.push(rotationTrack);\n }\n\n if (\n rawTracks.S !== undefined &&\n Object.keys(rawTracks.S.curves).length > 0\n ) {\n const scaleTrack = this.generateVectorTrack(\n rawTracks.modelName,\n rawTracks.S.curves,\n initialScale,\n \"scale\"\n );\n if (scaleTrack !== undefined) tracks.push(scaleTrack);\n }\n\n if (rawTracks.DeformPercent !== undefined) {\n const morphTrack = this.generateMorphTrack(rawTracks);\n if (morphTrack !== undefined) tracks.push(morphTrack);\n }\n\n return tracks;\n }\n\n generateVectorTrack(modelName, curves, initialValue, type) {\n const times = this.getTimesForAllAxes(curves);\n const values = this.getKeyframeTrackValues(times, curves, initialValue);\n\n return new VectorKeyframeTrack(modelName + \".\" + type, times, values);\n }\n\n generateRotationTrack(\n modelName,\n curves,\n initialValue,\n preRotation,\n postRotation,\n eulerOrder\n ) {\n if (curves.x !== undefined) {\n this.interpolateRotations(curves.x);\n curves.x.values = curves.x.values.map(MathUtils.degToRad);\n }\n\n if (curves.y !== undefined) {\n this.interpolateRotations(curves.y);\n curves.y.values = curves.y.values.map(MathUtils.degToRad);\n }\n\n if (curves.z !== undefined) {\n this.interpolateRotations(curves.z);\n curves.z.values = curves.z.values.map(MathUtils.degToRad);\n }\n\n const times = this.getTimesForAllAxes(curves);\n const values = this.getKeyframeTrackValues(times, curves, initialValue);\n\n if (preRotation !== undefined) {\n preRotation = preRotation.map(MathUtils.degToRad);\n preRotation.push(eulerOrder);\n\n preRotation = new Euler().fromArray(preRotation);\n preRotation = new Quaternion().setFromEuler(preRotation);\n }\n\n if (postRotation !== undefined) {\n postRotation = postRotation.map(MathUtils.degToRad);\n postRotation.push(eulerOrder);\n\n postRotation = new Euler().fromArray(postRotation);\n postRotation = new Quaternion().setFromEuler(postRotation).invert();\n }\n\n const quaternion = new Quaternion();\n const euler = new Euler();\n\n const quaternionValues = [];\n\n for (let i = 0; i < values.length; i += 3) {\n euler.set(values[i], values[i + 1], values[i + 2], eulerOrder);\n\n quaternion.setFromEuler(euler);\n\n if (preRotation !== undefined) quaternion.premultiply(preRotation);\n if (postRotation !== undefined) quaternion.multiply(postRotation);\n\n quaternion.toArray(quaternionValues, (i / 3) * 4);\n }\n\n return new QuaternionKeyframeTrack(\n modelName + \".quaternion\",\n times,\n quaternionValues\n );\n }\n\n generateMorphTrack(rawTracks) {\n const curves = rawTracks.DeformPercent.curves.morph;\n const values = curves.values.map(function (val) {\n return val / 100;\n });\n\n const morphNum = sceneGraph.getObjectByName(rawTracks.modelName)\n .morphTargetDictionary[rawTracks.morphName];\n\n return new NumberKeyframeTrack(\n rawTracks.modelName + \".morphTargetInfluences[\" + morphNum + \"]\",\n curves.times,\n values\n );\n }\n\n // For all animated objects, times are defined separately for each axis\n // Here we'll combine the times into one sorted array without duplicates\n getTimesForAllAxes(curves) {\n let times = [];\n\n // first join together the times for each axis, if defined\n if (curves.x !== undefined) times = times.concat(curves.x.times);\n if (curves.y !== undefined) times = times.concat(curves.y.times);\n if (curves.z !== undefined) times = times.concat(curves.z.times);\n\n // then sort them\n times = times.sort(function (a, b) {\n return a - b;\n });\n\n // and remove duplicates\n if (times.length > 1) {\n let targetIndex = 1;\n let lastValue = times[0];\n for (let i = 1; i < times.length; i++) {\n const currentValue = times[i];\n if (currentValue !== lastValue) {\n times[targetIndex] = currentValue;\n lastValue = currentValue;\n targetIndex++;\n }\n }\n\n times = times.slice(0, targetIndex);\n }\n\n return times;\n }\n\n getKeyframeTrackValues(times, curves, initialValue) {\n const prevValue = initialValue;\n\n const values = [];\n\n let xIndex = -1;\n let yIndex = -1;\n let zIndex = -1;\n\n times.forEach(function (time) {\n if (curves.x) xIndex = curves.x.times.indexOf(time);\n if (curves.y) yIndex = curves.y.times.indexOf(time);\n if (curves.z) zIndex = curves.z.times.indexOf(time);\n\n // if there is an x value defined for this frame, use that\n if (xIndex !== -1) {\n const xValue = curves.x.values[xIndex];\n values.push(xValue);\n prevValue[0] = xValue;\n } else {\n // otherwise use the x value from the previous frame\n values.push(prevValue[0]);\n }\n\n if (yIndex !== -1) {\n const yValue = curves.y.values[yIndex];\n values.push(yValue);\n prevValue[1] = yValue;\n } else {\n values.push(prevValue[1]);\n }\n\n if (zIndex !== -1) {\n const zValue = curves.z.values[zIndex];\n values.push(zValue);\n prevValue[2] = zValue;\n } else {\n values.push(prevValue[2]);\n }\n });\n\n return values;\n }\n\n // Rotations are defined as Euler angles which can have values of any size\n // These will be converted to quaternions which don't support values greater than\n // PI, so we'll interpolate large rotations\n interpolateRotations(curve) {\n for (let i = 1; i < curve.values.length; i++) {\n const initialValue = curve.values[i - 1];\n const valuesSpan = curve.values[i] - initialValue;\n\n const absoluteSpan = Math.abs(valuesSpan);\n\n if (absoluteSpan >= 180) {\n const numSubIntervals = absoluteSpan / 180;\n\n const step = valuesSpan / numSubIntervals;\n let nextValue = initialValue + step;\n\n const initialTime = curve.times[i - 1];\n const timeSpan = curve.times[i] - initialTime;\n const interval = timeSpan / numSubIntervals;\n let nextTime = initialTime + interval;\n\n const interpolatedTimes = [];\n const interpolatedValues = [];\n\n while (nextTime < curve.times[i]) {\n interpolatedTimes.push(nextTime);\n nextTime += interval;\n\n interpolatedValues.push(nextValue);\n nextValue += step;\n }\n\n curve.times = inject(curve.times, i, interpolatedTimes);\n curve.values = inject(curve.values, i, interpolatedValues);\n }\n }\n }\n}\n\n// parse an FBX file in ASCII format\nclass TextParser {\n getPrevNode() {\n return this.nodeStack[this.currentIndent - 2];\n }\n\n getCurrentNode() {\n return this.nodeStack[this.currentIndent - 1];\n }\n\n getCurrentProp() {\n return this.currentProp;\n }\n\n pushStack(node) {\n this.nodeStack.push(node);\n this.currentIndent += 1;\n }\n\n popStack() {\n this.nodeStack.pop();\n this.currentIndent -= 1;\n }\n\n setCurrentProp(val, name) {\n this.currentProp = val;\n this.currentPropName = name;\n }\n\n parse(text) {\n this.currentIndent = 0;\n\n this.allNodes = new FBXTree();\n this.nodeStack = [];\n this.currentProp = [];\n this.currentPropName = \"\";\n\n const scope = this;\n\n const split = text.split(/[\\r\\n]+/);\n\n split.forEach(function (line, i) {\n const matchComment = line.match(/^[\\s\\t]*;/);\n const matchEmpty = line.match(/^[\\s\\t]*$/);\n\n if (matchComment || matchEmpty) return;\n\n const matchBeginning = line.match(\n \"^\\\\t{\" + scope.currentIndent + \"}(\\\\w+):(.*){\",\n \"\"\n );\n const matchProperty = line.match(\n \"^\\\\t{\" + scope.currentIndent + \"}(\\\\w+):[\\\\s\\\\t\\\\r\\\\n](.*)\"\n );\n const matchEnd = line.match(\"^\\\\t{\" + (scope.currentIndent - 1) + \"}}\");\n\n if (matchBeginning) {\n scope.parseNodeBegin(line, matchBeginning);\n } else if (matchProperty) {\n scope.parseNodeProperty(line, matchProperty, split[++i]);\n } else if (matchEnd) {\n scope.popStack();\n } else if (line.match(/^[^\\s\\t}]/)) {\n // large arrays are split over multiple lines terminated with a ',' character\n // if this is encountered the line needs to be joined to the previous line\n scope.parseNodePropertyContinued(line);\n }\n });\n\n return this.allNodes;\n }\n\n parseNodeBegin(line, property) {\n const nodeName = property[1].trim().replace(/^\"/, \"\").replace(/\"$/, \"\");\n\n const nodeAttrs = property[2].split(\",\").map(function (attr) {\n return attr.trim().replace(/^\"/, \"\").replace(/\"$/, \"\");\n });\n\n const node = { name: nodeName };\n const attrs = this.parseNodeAttr(nodeAttrs);\n\n const currentNode = this.getCurrentNode();\n\n // a top node\n if (this.currentIndent === 0) {\n this.allNodes.add(nodeName, node);\n } else {\n // a subnode\n\n // if the subnode already exists, append it\n if (nodeName in currentNode) {\n // special case Pose needs PoseNodes as an array\n if (nodeName === \"PoseNode\") {\n currentNode.PoseNode.push(node);\n } else if (currentNode[nodeName].id !== undefined) {\n currentNode[nodeName] = {};\n currentNode[nodeName][currentNode[nodeName].id] =\n currentNode[nodeName];\n }\n\n if (attrs.id !== \"\") currentNode[nodeName][attrs.id] = node;\n } else if (typeof attrs.id === \"number\") {\n currentNode[nodeName] = {};\n currentNode[nodeName][attrs.id] = node;\n } else if (nodeName !== \"Properties70\") {\n if (nodeName === \"PoseNode\") currentNode[nodeName] = [node];\n else currentNode[nodeName] = node;\n }\n }\n\n if (typeof attrs.id === \"number\") node.id = attrs.id;\n if (attrs.name !== \"\") node.attrName = attrs.name;\n if (attrs.type !== \"\") node.attrType = attrs.type;\n\n this.pushStack(node);\n }\n\n parseNodeAttr(attrs) {\n let id = attrs[0];\n\n if (attrs[0] !== \"\") {\n id = parseInt(attrs[0]);\n\n if (isNaN(id)) {\n id = attrs[0];\n }\n }\n\n let name = \"\",\n type = \"\";\n\n if (attrs.length > 1) {\n name = attrs[1].replace(/^(\\w+)::/, \"\");\n type = attrs[2];\n }\n\n return { id: id, name: name, type: type };\n }\n\n parseNodeProperty(line, property, contentLine) {\n let propName = property[1].replace(/^\"/, \"\").replace(/\"$/, \"\").trim();\n let propValue = property[2].replace(/^\"/, \"\").replace(/\"$/, \"\").trim();\n\n // for special case: base64 image data follows \"Content: ,\" line\n //\tContent: ,\n //\t \"/9j/4RDaRXhpZgAATU0A...\"\n if (propName === \"Content\" && propValue === \",\") {\n propValue = contentLine.replace(/\"/g, \"\").replace(/,$/, \"\").trim();\n }\n\n const currentNode = this.getCurrentNode();\n const parentName = currentNode.name;\n\n if (parentName === \"Properties70\") {\n this.parseNodeSpecialProperty(line, propName, propValue);\n return;\n }\n\n // Connections\n if (propName === \"C\") {\n const connProps = propValue.split(\",\").slice(1);\n const from = parseInt(connProps[0]);\n const to = parseInt(connProps[1]);\n\n let rest = propValue.split(\",\").slice(3);\n\n rest = rest.map(function (elem) {\n return elem.trim().replace(/^\"/, \"\");\n });\n\n propName = \"connections\";\n propValue = [from, to];\n append(propValue, rest);\n\n if (currentNode[propName] === undefined) {\n currentNode[propName] = [];\n }\n }\n\n // Node\n if (propName === \"Node\") currentNode.id = propValue;\n\n // connections\n if (propName in currentNode && Array.isArray(currentNode[propName])) {\n currentNode[propName].push(propValue);\n } else {\n if (propName !== \"a\") currentNode[propName] = propValue;\n else currentNode.a = propValue;\n }\n\n this.setCurrentProp(currentNode, propName);\n\n // convert string to array, unless it ends in ',' in which case more will be added to it\n if (propName === \"a\" && propValue.slice(-1) !== \",\") {\n currentNode.a = parseNumberArray(propValue);\n }\n }\n\n parseNodePropertyContinued(line) {\n const currentNode = this.getCurrentNode();\n\n currentNode.a += line;\n\n // if the line doesn't end in ',' we have reached the end of the property value\n // so convert the string to an array\n if (line.slice(-1) !== \",\") {\n currentNode.a = parseNumberArray(currentNode.a);\n }\n }\n\n // parse \"Property70\"\n parseNodeSpecialProperty(line, propName, propValue) {\n // split this\n // P: \"Lcl Scaling\", \"Lcl Scaling\", \"\", \"A\",1,1,1\n // into array like below\n // [\"Lcl Scaling\", \"Lcl Scaling\", \"\", \"A\", \"1,1,1\" ]\n const props = propValue.split('\",').map(function (prop) {\n return prop.trim().replace(/^\\\"/, \"\").replace(/\\s/, \"_\");\n });\n\n const innerPropName = props[0];\n const innerPropType1 = props[1];\n const innerPropType2 = props[2];\n const innerPropFlag = props[3];\n let innerPropValue = props[4];\n\n // cast values where needed, otherwise leave as strings\n switch (innerPropType1) {\n case \"int\":\n case \"enum\":\n case \"bool\":\n case \"ULongLong\":\n case \"double\":\n case \"Number\":\n case \"FieldOfView\":\n innerPropValue = parseFloat(innerPropValue);\n break;\n\n case \"Color\":\n case \"ColorRGB\":\n case \"Vector3D\":\n case \"Lcl_Translation\":\n case \"Lcl_Rotation\":\n case \"Lcl_Scaling\":\n innerPropValue = parseNumberArray(innerPropValue);\n break;\n }\n\n // CAUTION: these props must append to parent's parent\n this.getPrevNode()[innerPropName] = {\n type: innerPropType1,\n type2: innerPropType2,\n flag: innerPropFlag,\n value: innerPropValue,\n };\n\n this.setCurrentProp(this.getPrevNode(), innerPropName);\n }\n}\n\n// Parse an FBX file in Binary format\nclass BinaryParser {\n parse(buffer) {\n const reader = new BinaryReader(buffer);\n reader.skip(23); // skip magic 23 bytes\n\n const version = reader.getUint32();\n\n if (version < 6400) {\n throw new Error(\n \"THREE.FBXLoader: FBX version not supported, FileVersion: \" + version\n );\n }\n\n const allNodes = new FBXTree();\n\n while (!this.endOfContent(reader)) {\n const node = this.parseNode(reader, version);\n if (node !== null) allNodes.add(node.name, node);\n }\n\n return allNodes;\n }\n\n // Check if reader has reached the end of content.\n endOfContent(reader) {\n // footer size: 160bytes + 16-byte alignment padding\n // - 16bytes: magic\n // - padding til 16-byte alignment (at least 1byte?)\n //\t(seems like some exporters embed fixed 15 or 16bytes?)\n // - 4bytes: magic\n // - 4bytes: version\n // - 120bytes: zero\n // - 16bytes: magic\n if (reader.size() % 16 === 0) {\n return ((reader.getOffset() + 160 + 16) & ~0xf) >= reader.size();\n } else {\n return reader.getOffset() + 160 + 16 >= reader.size();\n }\n }\n\n // recursively parse nodes until the end of the file is reached\n parseNode(reader, version) {\n const node = {};\n\n // The first three data sizes depends on version.\n const endOffset = version >= 7500 ? reader.getUint64() : reader.getUint32();\n const numProperties =\n version >= 7500 ? reader.getUint64() : reader.getUint32();\n\n version >= 7500 ? reader.getUint64() : reader.getUint32(); // the returned propertyListLen is not used\n\n const nameLen = reader.getUint8();\n const name = reader.getString(nameLen);\n\n // Regards this node as NULL-record if endOffset is zero\n if (endOffset === 0) return null;\n\n const propertyList = [];\n\n for (let i = 0; i < numProperties; i++) {\n propertyList.push(this.parseProperty(reader));\n }\n\n // Regards the first three elements in propertyList as id, attrName, and attrType\n const id = propertyList.length > 0 ? propertyList[0] : \"\";\n const attrName = propertyList.length > 1 ? propertyList[1] : \"\";\n const attrType = propertyList.length > 2 ? propertyList[2] : \"\";\n\n // check if this node represents just a single property\n // like (name, 0) set or (name2, [0, 1, 2]) set of {name: 0, name2: [0, 1, 2]}\n node.singleProperty =\n numProperties === 1 && reader.getOffset() === endOffset ? true : false;\n\n while (endOffset > reader.getOffset()) {\n const subNode = this.parseNode(reader, version);\n\n if (subNode !== null) this.parseSubNode(name, node, subNode);\n }\n\n node.propertyList = propertyList; // raw property list used by parent\n\n if (typeof id === \"number\") node.id = id;\n if (attrName !== \"\") node.attrName = attrName;\n if (attrType !== \"\") node.attrType = attrType;\n if (name !== \"\") node.name = name;\n\n return node;\n }\n\n parseSubNode(name, node, subNode) {\n // special case: child node is single property\n if (subNode.singleProperty === true) {\n const value = subNode.propertyList[0];\n\n if (Array.isArray(value)) {\n node[subNode.name] = subNode;\n\n subNode.a = value;\n } else {\n node[subNode.name] = value;\n }\n } else if (name === \"Connections\" && subNode.name === \"C\") {\n const array = [];\n\n subNode.propertyList.forEach(function (property, i) {\n // first Connection is FBX type (OO, OP, etc.). We'll discard these\n if (i !== 0) array.push(property);\n });\n\n if (node.connections === undefined) {\n node.connections = [];\n }\n\n node.connections.push(array);\n } else if (subNode.name === \"Properties70\") {\n const keys = Object.keys(subNode);\n\n keys.forEach(function (key) {\n node[key] = subNode[key];\n });\n } else if (name === \"Properties70\" && subNode.name === \"P\") {\n let innerPropName = subNode.propertyList[0];\n let innerPropType1 = subNode.propertyList[1];\n const innerPropType2 = subNode.propertyList[2];\n const innerPropFlag = subNode.propertyList[3];\n let innerPropValue;\n\n if (innerPropName.indexOf(\"Lcl \") === 0)\n innerPropName = innerPropName.replace(\"Lcl \", \"Lcl_\");\n if (innerPropType1.indexOf(\"Lcl \") === 0)\n innerPropType1 = innerPropType1.replace(\"Lcl \", \"Lcl_\");\n\n if (\n innerPropType1 === \"Color\" ||\n innerPropType1 === \"ColorRGB\" ||\n innerPropType1 === \"Vector\" ||\n innerPropType1 === \"Vector3D\" ||\n innerPropType1.indexOf(\"Lcl_\") === 0\n ) {\n innerPropValue = [\n subNode.propertyList[4],\n subNode.propertyList[5],\n subNode.propertyList[6],\n ];\n } else {\n innerPropValue = subNode.propertyList[4];\n }\n\n // this will be copied to parent, see above\n node[innerPropName] = {\n type: innerPropType1,\n type2: innerPropType2,\n flag: innerPropFlag,\n value: innerPropValue,\n };\n } else if (node[subNode.name] === undefined) {\n if (typeof subNode.id === \"number\") {\n node[subNode.name] = {};\n node[subNode.name][subNode.id] = subNode;\n } else {\n node[subNode.name] = subNode;\n }\n } else {\n if (subNode.name === \"PoseNode\") {\n if (!Array.isArray(node[subNode.name])) {\n node[subNode.name] = [node[subNode.name]];\n }\n\n node[subNode.name].push(subNode);\n } else if (node[subNode.name][subNode.id] === undefined) {\n node[subNode.name][subNode.id] = subNode;\n }\n }\n }\n\n parseProperty(reader) {\n const type = reader.getString(1);\n let length;\n\n switch (type) {\n case \"C\":\n return reader.getBoolean();\n\n case \"D\":\n return reader.getFloat64();\n\n case \"F\":\n return reader.getFloat32();\n\n case \"I\":\n return reader.getInt32();\n\n case \"L\":\n return reader.getInt64();\n\n case \"R\":\n length = reader.getUint32();\n return reader.getArrayBuffer(length);\n\n case \"S\":\n length = reader.getUint32();\n return reader.getString(length);\n\n case \"Y\":\n return reader.getInt16();\n\n case \"b\":\n case \"c\":\n case \"d\":\n case \"f\":\n case \"i\":\n case \"l\":\n const arrayLength = reader.getUint32();\n const encoding = reader.getUint32(); // 0: non-compressed, 1: compressed\n const compressedLength = reader.getUint32();\n\n if (encoding === 0) {\n switch (type) {\n case \"b\":\n case \"c\":\n return reader.getBooleanArray(arrayLength);\n\n case \"d\":\n return reader.getFloat64Array(arrayLength);\n\n case \"f\":\n return reader.getFloat32Array(arrayLength);\n\n case \"i\":\n return reader.getInt32Array(arrayLength);\n\n case \"l\":\n return reader.getInt64Array(arrayLength);\n }\n }\n\n const data = fflate.unzlibSync(\n new Uint8Array(reader.getArrayBuffer(compressedLength))\n );\n const reader2 = new BinaryReader(data.buffer);\n\n switch (type) {\n case \"b\":\n case \"c\":\n return reader2.getBooleanArray(arrayLength);\n\n case \"d\":\n return reader2.getFloat64Array(arrayLength);\n\n case \"f\":\n return reader2.getFloat32Array(arrayLength);\n\n case \"i\":\n return reader2.getInt32Array(arrayLength);\n\n case \"l\":\n return reader2.getInt64Array(arrayLength);\n }\n\n break; // cannot happen but is required by the DeepScan\n\n default:\n throw new Error(\"THREE.FBXLoader: Unknown property type \" + type);\n }\n }\n}\n\nclass BinaryReader {\n constructor(buffer, littleEndian) {\n this.dv = new DataView(buffer);\n this.offset = 0;\n this.littleEndian = littleEndian !== undefined ? littleEndian : true;\n this._textDecoder = new TextDecoder();\n }\n\n getOffset() {\n return this.offset;\n }\n\n size() {\n return this.dv.buffer.byteLength;\n }\n\n skip(length) {\n this.offset += length;\n }\n\n // seems like true/false representation depends on exporter.\n // true: 1 or 'Y'(=0x59), false: 0 or 'T'(=0x54)\n // then sees LSB.\n getBoolean() {\n return (this.getUint8() & 1) === 1;\n }\n\n getBooleanArray(size) {\n const a = [];\n\n for (let i = 0; i < size; i++) {\n a.push(this.getBoolean());\n }\n\n return a;\n }\n\n getUint8() {\n const value = this.dv.getUint8(this.offset);\n this.offset += 1;\n return value;\n }\n\n getInt16() {\n const value = this.dv.getInt16(this.offset, this.littleEndian);\n this.offset += 2;\n return value;\n }\n\n getInt32() {\n const value = this.dv.getInt32(this.offset, this.littleEndian);\n this.offset += 4;\n return value;\n }\n\n getInt32Array(size) {\n const a = [];\n\n for (let i = 0; i < size; i++) {\n a.push(this.getInt32());\n }\n\n return a;\n }\n\n getUint32() {\n const value = this.dv.getUint32(this.offset, this.littleEndian);\n this.offset += 4;\n return value;\n }\n\n // JavaScript doesn't support 64-bit integer so calculate this here\n // 1 << 32 will return 1 so using multiply operation instead here.\n // There's a possibility that this method returns wrong value if the value\n // is out of the range between Number.MAX_SAFE_INTEGER and Number.MIN_SAFE_INTEGER.\n // TODO: safely handle 64-bit integer\n getInt64() {\n let low, high;\n\n if (this.littleEndian) {\n low = this.getUint32();\n high = this.getUint32();\n } else {\n high = this.getUint32();\n low = this.getUint32();\n }\n\n // calculate negative value\n if (high & 0x80000000) {\n high = ~high & 0xffffffff;\n low = ~low & 0xffffffff;\n\n if (low === 0xffffffff) high = (high + 1) & 0xffffffff;\n\n low = (low + 1) & 0xffffffff;\n\n return -(high * 0x100000000 + low);\n }\n\n return high * 0x100000000 + low;\n }\n\n getInt64Array(size) {\n const a = [];\n\n for (let i = 0; i < size; i++) {\n a.push(this.getInt64());\n }\n\n return a;\n }\n\n // Note: see getInt64() comment\n getUint64() {\n let low, high;\n\n if (this.littleEndian) {\n low = this.getUint32();\n high = this.getUint32();\n } else {\n high = this.getUint32();\n low = this.getUint32();\n }\n\n return high * 0x100000000 + low;\n }\n\n getFloat32() {\n const value = this.dv.getFloat32(this.offset, this.littleEndian);\n this.offset += 4;\n return value;\n }\n\n getFloat32Array(size) {\n const a = [];\n\n for (let i = 0; i < size; i++) {\n a.push(this.getFloat32());\n }\n\n return a;\n }\n\n getFloat64() {\n const value = this.dv.getFloat64(this.offset, this.littleEndian);\n this.offset += 8;\n return value;\n }\n\n getFloat64Array(size) {\n const a = [];\n\n for (let i = 0; i < size; i++) {\n a.push(this.getFloat64());\n }\n\n return a;\n }\n\n getArrayBuffer(size) {\n const value = this.dv.buffer.slice(this.offset, this.offset + size);\n this.offset += size;\n return value;\n }\n\n getString(size) {\n const start = this.offset;\n let a = new Uint8Array(this.dv.buffer, start, size);\n\n this.skip(size);\n\n const nullByte = a.indexOf(0);\n if (nullByte >= 0) a = new Uint8Array(this.dv.buffer, start, nullByte);\n\n return this._textDecoder.decode(a);\n }\n}\n\n// FBXTree holds a representation of the FBX data, returned by the TextParser ( FBX ASCII format)\n// and BinaryParser( FBX Binary format)\nclass FBXTree {\n add(key, val) {\n this[key] = val;\n }\n}\n\n// ************** UTILITY FUNCTIONS **************\n\nfunction isFbxFormatBinary(buffer) {\n const CORRECT = \"Kaydara\\u0020FBX\\u0020Binary\\u0020\\u0020\\0\";\n\n return (\n buffer.byteLength >= CORRECT.length &&\n CORRECT === convertArrayBufferToString(buffer, 0, CORRECT.length)\n );\n}\n\nfunction isFbxFormatASCII(text) {\n const CORRECT = [\n \"K\",\n \"a\",\n \"y\",\n \"d\",\n \"a\",\n \"r\",\n \"a\",\n \"\\\\\",\n \"F\",\n \"B\",\n \"X\",\n \"\\\\\",\n \"B\",\n \"i\",\n \"n\",\n \"a\",\n \"r\",\n \"y\",\n \"\\\\\",\n \"\\\\\",\n ];\n\n let cursor = 0;\n\n function read(offset) {\n const result = text[offset - 1];\n text = text.slice(cursor + offset);\n cursor++;\n return result;\n }\n\n for (let i = 0; i < CORRECT.length; ++i) {\n const num = read(1);\n if (num === CORRECT[i]) {\n return false;\n }\n }\n\n return true;\n}\n\nfunction getFbxVersion(text) {\n const versionRegExp = /FBXVersion: (\\d+)/;\n const match = text.match(versionRegExp);\n\n if (match) {\n const version = parseInt(match[1]);\n return version;\n }\n\n throw new Error(\n \"THREE.FBXLoader: Cannot find the version number for the file given.\"\n );\n}\n\n// Converts FBX ticks into real time seconds.\nfunction convertFBXTimeToSeconds(time) {\n return time / 46186158000;\n}\n\nconst dataArray = [];\n\n// extracts the data from the correct position in the FBX array based on indexing type\nfunction getData(polygonVertexIndex, polygonIndex, vertexIndex, infoObject) {\n let index;\n\n switch (infoObject.mappingType) {\n case \"ByPolygonVertex\":\n index = polygonVertexIndex;\n break;\n case \"ByPolygon\":\n index = polygonIndex;\n break;\n case \"ByVertice\":\n index = vertexIndex;\n break;\n case \"AllSame\":\n index = infoObject.indices[0];\n break;\n default:\n console.warn(\n \"THREE.FBXLoader: unknown attribute mapping type \" +\n infoObject.mappingType\n );\n }\n\n if (infoObject.referenceType === \"IndexToDirect\")\n index = infoObject.indices[index];\n\n const from = index * infoObject.dataSize;\n const to = from + infoObject.dataSize;\n\n return slice(dataArray, infoObject.buffer, from, to);\n}\n\nconst tempEuler = new Euler();\nconst tempVec = new Vector3();\n\n// generate transformation from FBX transform data\n// ref: https://help.autodesk.com/view/FBX/2017/ENU/?guid=__files_GUID_10CDD63C_79C1_4F2D_BB28_AD2BE65A02ED_htm\n// 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\nfunction generateTransform(transformData) {\n const lTranslationM = new Matrix4();\n const lPreRotationM = new Matrix4();\n const lRotationM = new Matrix4();\n const lPostRotationM = new Matrix4();\n\n const lScalingM = new Matrix4();\n const lScalingPivotM = new Matrix4();\n const lScalingOffsetM = new Matrix4();\n const lRotationOffsetM = new Matrix4();\n const lRotationPivotM = new Matrix4();\n\n const lParentGX = new Matrix4();\n const lParentLX = new Matrix4();\n const lGlobalT = new Matrix4();\n\n const inheritType = transformData.inheritType ? transformData.inheritType : 0;\n\n if (transformData.translation)\n lTranslationM.setPosition(tempVec.fromArray(transformData.translation));\n\n if (transformData.preRotation) {\n const array = transformData.preRotation.map(MathUtils.degToRad);\n array.push(transformData.eulerOrder || Euler.DEFAULT_ORDER);\n lPreRotationM.makeRotationFromEuler(tempEuler.fromArray(array));\n }\n\n if (transformData.rotation) {\n const array = transformData.rotation.map(MathUtils.degToRad);\n array.push(transformData.eulerOrder || Euler.DEFAULT_ORDER);\n lRotationM.makeRotationFromEuler(tempEuler.fromArray(array));\n }\n\n if (transformData.postRotation) {\n const array = transformData.postRotation.map(MathUtils.degToRad);\n array.push(transformData.eulerOrder || Euler.DEFAULT_ORDER);\n lPostRotationM.makeRotationFromEuler(tempEuler.fromArray(array));\n lPostRotationM.invert();\n }\n\n if (transformData.scale)\n lScalingM.scale(tempVec.fromArray(transformData.scale));\n\n // Pivots and offsets\n if (transformData.scalingOffset)\n lScalingOffsetM.setPosition(tempVec.fromArray(transformData.scalingOffset));\n if (transformData.scalingPivot)\n lScalingPivotM.setPosition(tempVec.fromArray(transformData.scalingPivot));\n if (transformData.rotationOffset)\n lRotationOffsetM.setPosition(\n tempVec.fromArray(transformData.rotationOffset)\n );\n if (transformData.rotationPivot)\n lRotationPivotM.setPosition(tempVec.fromArray(transformData.rotationPivot));\n\n // parent transform\n if (transformData.parentMatrixWorld) {\n lParentLX.copy(transformData.parentMatrix);\n lParentGX.copy(transformData.parentMatrixWorld);\n }\n\n const lLRM = lPreRotationM\n .clone()\n .multiply(lRotationM)\n .multiply(lPostRotationM);\n // Global Rotation\n const lParentGRM = new Matrix4();\n lParentGRM.extractRotation(lParentGX);\n\n // Global Shear*Scaling\n const lParentTM = new Matrix4();\n lParentTM.copyPosition(lParentGX);\n\n const lParentGRSM = lParentTM.clone().invert().multiply(lParentGX);\n const lParentGSM = lParentGRM.clone().invert().multiply(lParentGRSM);\n const lLSM = lScalingM;\n\n const lGlobalRS = new Matrix4();\n\n if (inheritType === 0) {\n lGlobalRS\n .copy(lParentGRM)\n .multiply(lLRM)\n .multiply(lParentGSM)\n .multiply(lLSM);\n } else if (inheritType === 1) {\n lGlobalRS\n .copy(lParentGRM)\n .multiply(lParentGSM)\n .multiply(lLRM)\n .multiply(lLSM);\n } else {\n const lParentLSM = new Matrix4().scale(\n new Vector3().setFromMatrixScale(lParentLX)\n );\n const lParentLSM_inv = lParentLSM.clone().invert();\n const lParentGSM_noLocal = lParentGSM.clone().multiply(lParentLSM_inv);\n\n lGlobalRS\n .copy(lParentGRM)\n .multiply(lLRM)\n .multiply(lParentGSM_noLocal)\n .multiply(lLSM);\n }\n\n const lRotationPivotM_inv = lRotationPivotM.clone().invert();\n const lScalingPivotM_inv = lScalingPivotM.clone().invert();\n // Calculate the local transform matrix\n let lTransform = lTranslationM\n .clone()\n .multiply(lRotationOffsetM)\n .multiply(lRotationPivotM)\n .multiply(lPreRotationM)\n .multiply(lRotationM)\n .multiply(lPostRotationM)\n .multiply(lRotationPivotM_inv)\n .multiply(lScalingOffsetM)\n .multiply(lScalingPivotM)\n .multiply(lScalingM)\n .multiply(lScalingPivotM_inv);\n\n const lLocalTWithAllPivotAndOffsetInfo = new Matrix4().copyPosition(\n lTransform\n );\n\n const lGlobalTranslation = lParentGX\n .clone()\n .multiply(lLocalTWithAllPivotAndOffsetInfo);\n lGlobalT.copyPosition(lGlobalTranslation);\n\n lTransform = lGlobalT.clone().multiply(lGlobalRS);\n\n // from global to local\n lTransform.premultiply(lParentGX.invert());\n\n return lTransform;\n}\n\n// Returns the three.js intrinsic Euler order corresponding to FBX extrinsic Euler order\n// ref: http://help.autodesk.com/view/FBX/2017/ENU/?guid=__cpp_ref_class_fbx_euler_html\nfunction getEulerOrder(order) {\n order = order || 0;\n\n const enums = [\n \"ZYX\", // -> XYZ extrinsic\n \"YZX\", // -> XZY extrinsic\n \"XZY\", // -> YZX extrinsic\n \"ZXY\", // -> YXZ extrinsic\n \"YXZ\", // -> ZXY extrinsic\n \"XYZ\", // -> ZYX extrinsic\n //'SphericXYZ', // not possible to support\n ];\n\n if (order === 6) {\n console.warn(\n \"THREE.FBXLoader: unsupported Euler Order: Spherical XYZ. Animations and rotations may be incorrect.\"\n );\n return enums[0];\n }\n\n return enums[order];\n}\n\n// Parses comma separated list of numbers and returns them an array.\n// Used internally by the TextParser\nfunction parseNumberArray(value) {\n const array = value.split(\",\").map(function (val) {\n return parseFloat(val);\n });\n\n return array;\n}\n\nfunction convertArrayBufferToString(buffer, from, to) {\n if (from === undefined) from = 0;\n if (to === undefined) to = buffer.byteLength;\n\n return new TextDecoder().decode(new Uint8Array(buffer, from, to));\n}\n\nfunction append(a, b) {\n for (let i = 0, j = a.length, l = b.length; i < l; i++, j++) {\n a[j] = b[i];\n }\n}\n\nfunction slice(a, b, from, to) {\n for (let i = from, j = 0; i < to; i++, j++) {\n a[j] = b[i];\n }\n\n return a;\n}\n\n// inject array a2 into array a1 at index\nfunction inject(a1, index, a2) {\n return a1.slice(0, index).concat(a2).concat(a1.slice(index));\n}\n\nexport { FBXLoader 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