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Class_Of_Learners / GLTFLoader.js
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;(function () {
class GLTFLoader extends THREE.Loader {
constructor(manager) {
super(manager)
this.dracoLoader = null
this.ktx2Loader = null
this.meshoptDecoder = null
this.pluginCallbacks = []
this.register(function (parser) {
return new GLTFMaterialsClearcoatExtension(parser)
})
this.register(function (parser) {
return new GLTFTextureBasisUExtension(parser)
})
this.register(function (parser) {
return new GLTFTextureWebPExtension(parser)
})
this.register(function (parser) {
return new GLTFMaterialsSheenExtension(parser)
})
this.register(function (parser) {
return new GLTFMaterialsTransmissionExtension(parser)
})
this.register(function (parser) {
return new GLTFMaterialsVolumeExtension(parser)
})
this.register(function (parser) {
return new GLTFMaterialsIorExtension(parser)
})
this.register(function (parser) {
return new GLTFMaterialsSpecularExtension(parser)
})
this.register(function (parser) {
return new GLTFLightsExtension(parser)
})
this.register(function (parser) {
return new GLTFMeshoptCompression(parser)
})
}
load(url, onLoad, onProgress, onError) {
const scope = this
let resourcePath
if (this.resourcePath !== '') {
resourcePath = this.resourcePath
} else if (this.path !== '') {
resourcePath = this.path
} else {
resourcePath = THREE.LoaderUtils.extractUrlBase(url)
} // Tells the LoadingManager to track an extra item, which resolves after
// the model is fully loaded. This means the count of items loaded will
// be incorrect, but ensures manager.onLoad() does not fire early.
this.manager.itemStart(url)
const _onError = function (e) {
if (onError) {
onError(e)
} else {
console.error(e)
}
scope.manager.itemError(url)
scope.manager.itemEnd(url)
}
const loader = new THREE.FileLoader(this.manager)
loader.setPath(this.path)
loader.setResponseType('arraybuffer')
loader.setRequestHeader(this.requestHeader)
loader.setWithCredentials(this.withCredentials)
loader.load(
url,
function (data) {
try {
scope.parse(
data,
resourcePath,
function (gltf) {
onLoad(gltf)
scope.manager.itemEnd(url)
},
_onError
)
} catch (e) {
_onError(e)
}
},
onProgress,
_onError
)
}
setDRACOLoader(dracoLoader) {
this.dracoLoader = dracoLoader
return this
}
setDDSLoader() {
throw new Error('THREE.GLTFLoader: "MSFT_texture_dds" no longer supported. Please update to "KHR_texture_basisu".')
}
setKTX2Loader(ktx2Loader) {
this.ktx2Loader = ktx2Loader
return this
}
setMeshoptDecoder(meshoptDecoder) {
this.meshoptDecoder = meshoptDecoder
return this
}
register(callback) {
if (this.pluginCallbacks.indexOf(callback) === -1) {
this.pluginCallbacks.push(callback)
}
return this
}
unregister(callback) {
if (this.pluginCallbacks.indexOf(callback) !== -1) {
this.pluginCallbacks.splice(this.pluginCallbacks.indexOf(callback), 1)
}
return this
}
parse(data, path, onLoad, onError) {
let content
const extensions = {}
const plugins = {}
if (typeof data === 'string') {
content = data
} else {
const magic = THREE.LoaderUtils.decodeText(new Uint8Array(data, 0, 4))
if (magic === BINARY_EXTENSION_HEADER_MAGIC) {
try {
extensions[EXTENSIONS.KHR_BINARY_GLTF] = new GLTFBinaryExtension(data)
} catch (error) {
if (onError) onError(error)
return
}
content = extensions[EXTENSIONS.KHR_BINARY_GLTF].content
} else {
content = THREE.LoaderUtils.decodeText(new Uint8Array(data))
}
}
const json = JSON.parse(content)
if (json.asset === undefined || json.asset.version[0] < 2) {
if (onError) onError(new Error('THREE.GLTFLoader: Unsupported asset. glTF versions >=2.0 are supported.'))
return
}
const parser = new GLTFParser(json, {
path: path || this.resourcePath || '',
crossOrigin: this.crossOrigin,
requestHeader: this.requestHeader,
manager: this.manager,
ktx2Loader: this.ktx2Loader,
meshoptDecoder: this.meshoptDecoder
})
parser.fileLoader.setRequestHeader(this.requestHeader)
for (let i = 0; i < this.pluginCallbacks.length; i++) {
const plugin = this.pluginCallbacks[i](parser)
plugins[plugin.name] = plugin // Workaround to avoid determining as unknown extension
// in addUnknownExtensionsToUserData().
// Remove this workaround if we move all the existing
// extension handlers to plugin system
extensions[plugin.name] = true
}
if (json.extensionsUsed) {
for (let i = 0; i < json.extensionsUsed.length; ++i) {
const extensionName = json.extensionsUsed[i]
const extensionsRequired = json.extensionsRequired || []
switch (extensionName) {
case EXTENSIONS.KHR_MATERIALS_UNLIT:
extensions[extensionName] = new GLTFMaterialsUnlitExtension()
break
case EXTENSIONS.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS:
extensions[extensionName] = new GLTFMaterialsPbrSpecularGlossinessExtension()
break
case EXTENSIONS.KHR_DRACO_MESH_COMPRESSION:
extensions[extensionName] = new GLTFDracoMeshCompressionExtension(json, this.dracoLoader)
break
case EXTENSIONS.KHR_TEXTURE_TRANSFORM:
extensions[extensionName] = new GLTFTextureTransformExtension()
break
case EXTENSIONS.KHR_MESH_QUANTIZATION:
extensions[extensionName] = new GLTFMeshQuantizationExtension()
break
default:
if (extensionsRequired.indexOf(extensionName) >= 0 && plugins[extensionName] === undefined) {
console.warn('THREE.GLTFLoader: Unknown extension "' + extensionName + '".')
}
}
}
}
parser.setExtensions(extensions)
parser.setPlugins(plugins)
parser.parse(onLoad, onError)
}
parseAsync(data, path) {
const scope = this
return new Promise(function (resolve, reject) {
scope.parse(data, path, resolve, reject)
})
}
}
/* GLTFREGISTRY */
function GLTFRegistry() {
let objects = {}
return {
get: function (key) {
return objects[key]
},
add: function (key, object) {
objects[key] = object
},
remove: function (key) {
delete objects[key]
},
removeAll: function () {
objects = {}
}
}
}
/*********************************/
/********** EXTENSIONS ***********/
/*********************************/
const EXTENSIONS = {
KHR_BINARY_GLTF: 'KHR_binary_glTF',
KHR_DRACO_MESH_COMPRESSION: 'KHR_draco_mesh_compression',
KHR_LIGHTS_PUNCTUAL: 'KHR_lights_punctual',
KHR_MATERIALS_CLEARCOAT: 'KHR_materials_clearcoat',
KHR_MATERIALS_IOR: 'KHR_materials_ior',
KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS: 'KHR_materials_pbrSpecularGlossiness',
KHR_MATERIALS_SHEEN: 'KHR_materials_sheen',
KHR_MATERIALS_SPECULAR: 'KHR_materials_specular',
KHR_MATERIALS_TRANSMISSION: 'KHR_materials_transmission',
KHR_MATERIALS_UNLIT: 'KHR_materials_unlit',
KHR_MATERIALS_VOLUME: 'KHR_materials_volume',
KHR_TEXTURE_BASISU: 'KHR_texture_basisu',
KHR_TEXTURE_TRANSFORM: 'KHR_texture_transform',
KHR_MESH_QUANTIZATION: 'KHR_mesh_quantization',
EXT_TEXTURE_WEBP: 'EXT_texture_webp',
EXT_MESHOPT_COMPRESSION: 'EXT_meshopt_compression'
}
/**
* Punctual Lights Extension
*
* Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_lights_punctual
*/
class GLTFLightsExtension {
constructor(parser) {
this.parser = parser
this.name = EXTENSIONS.KHR_LIGHTS_PUNCTUAL // THREE.Object3D instance caches
this.cache = {
refs: {},
uses: {}
}
}
_markDefs() {
const parser = this.parser
const nodeDefs = this.parser.json.nodes || []
for (let nodeIndex = 0, nodeLength = nodeDefs.length; nodeIndex < nodeLength; nodeIndex++) {
const nodeDef = nodeDefs[nodeIndex]
if (nodeDef.extensions && nodeDef.extensions[this.name] && nodeDef.extensions[this.name].light !== undefined) {
parser._addNodeRef(this.cache, nodeDef.extensions[this.name].light)
}
}
}
_loadLight(lightIndex) {
const parser = this.parser
const cacheKey = 'light:' + lightIndex
let dependency = parser.cache.get(cacheKey)
if (dependency) return dependency
const json = parser.json
const extensions = (json.extensions && json.extensions[this.name]) || {}
const lightDefs = extensions.lights || []
const lightDef = lightDefs[lightIndex]
let lightNode
const color = new THREE.Color(0xffffff)
if (lightDef.color !== undefined) color.fromArray(lightDef.color)
const range = lightDef.range !== undefined ? lightDef.range : 0
switch (lightDef.type) {
case 'directional':
lightNode = new THREE.DirectionalLight(color)
lightNode.target.position.set(0, 0, -1)
lightNode.add(lightNode.target)
break
case 'point':
lightNode = new THREE.PointLight(color)
lightNode.distance = range
break
case 'spot':
lightNode = new THREE.SpotLight(color)
lightNode.distance = range // Handle spotlight properties.
lightDef.spot = lightDef.spot || {}
lightDef.spot.innerConeAngle = lightDef.spot.innerConeAngle !== undefined ? lightDef.spot.innerConeAngle : 0
lightDef.spot.outerConeAngle = lightDef.spot.outerConeAngle !== undefined ? lightDef.spot.outerConeAngle : Math.PI / 4.0
lightNode.angle = lightDef.spot.outerConeAngle
lightNode.penumbra = 1.0 - lightDef.spot.innerConeAngle / lightDef.spot.outerConeAngle
lightNode.target.position.set(0, 0, -1)
lightNode.add(lightNode.target)
break
default:
throw new Error('THREE.GLTFLoader: Unexpected light type: ' + lightDef.type)
} // Some lights (e.g. spot) default to a position other than the origin. Reset the position
// here, because node-level parsing will only override position if explicitly specified.
lightNode.position.set(0, 0, 0)
lightNode.decay = 2
if (lightDef.intensity !== undefined) lightNode.intensity = lightDef.intensity
lightNode.name = parser.createUniqueName(lightDef.name || 'light_' + lightIndex)
dependency = Promise.resolve(lightNode)
parser.cache.add(cacheKey, dependency)
return dependency
}
createNodeAttachment(nodeIndex) {
const self = this
const parser = this.parser
const json = parser.json
const nodeDef = json.nodes[nodeIndex]
const lightDef = (nodeDef.extensions && nodeDef.extensions[this.name]) || {}
const lightIndex = lightDef.light
if (lightIndex === undefined) return null
return this._loadLight(lightIndex).then(function (light) {
return parser._getNodeRef(self.cache, lightIndex, light)
})
}
}
/**
* Unlit Materials Extension
*
* Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_unlit
*/
class GLTFMaterialsUnlitExtension {
constructor() {
this.name = EXTENSIONS.KHR_MATERIALS_UNLIT
}
getMaterialType() {
return THREE.MeshBasicMaterial
}
extendParams(materialParams, materialDef, parser) {
const pending = []
materialParams.color = new THREE.Color(1.0, 1.0, 1.0)
materialParams.opacity = 1.0
const metallicRoughness = materialDef.pbrMetallicRoughness
if (metallicRoughness) {
if (Array.isArray(metallicRoughness.baseColorFactor)) {
const array = metallicRoughness.baseColorFactor
materialParams.color.fromArray(array)
materialParams.opacity = array[3]
}
if (metallicRoughness.baseColorTexture !== undefined) {
pending.push(parser.assignTexture(materialParams, 'map', metallicRoughness.baseColorTexture))
}
}
return Promise.all(pending)
}
}
/**
* Clearcoat Materials Extension
*
* Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_clearcoat
*/
class GLTFMaterialsClearcoatExtension {
constructor(parser) {
this.parser = parser
this.name = EXTENSIONS.KHR_MATERIALS_CLEARCOAT
}
getMaterialType(materialIndex) {
const parser = this.parser
const materialDef = parser.json.materials[materialIndex]
if (!materialDef.extensions || !materialDef.extensions[this.name]) return null
return THREE.MeshPhysicalMaterial
}
extendMaterialParams(materialIndex, materialParams) {
const parser = this.parser
const materialDef = parser.json.materials[materialIndex]
if (!materialDef.extensions || !materialDef.extensions[this.name]) {
return Promise.resolve()
}
const pending = []
const extension = materialDef.extensions[this.name]
if (extension.clearcoatFactor !== undefined) {
materialParams.clearcoat = extension.clearcoatFactor
}
if (extension.clearcoatTexture !== undefined) {
pending.push(parser.assignTexture(materialParams, 'clearcoatMap', extension.clearcoatTexture))
}
if (extension.clearcoatRoughnessFactor !== undefined) {
materialParams.clearcoatRoughness = extension.clearcoatRoughnessFactor
}
if (extension.clearcoatRoughnessTexture !== undefined) {
pending.push(parser.assignTexture(materialParams, 'clearcoatRoughnessMap', extension.clearcoatRoughnessTexture))
}
if (extension.clearcoatNormalTexture !== undefined) {
pending.push(parser.assignTexture(materialParams, 'clearcoatNormalMap', extension.clearcoatNormalTexture))
if (extension.clearcoatNormalTexture.scale !== undefined) {
const scale = extension.clearcoatNormalTexture.scale
materialParams.clearcoatNormalScale = new THREE.Vector2(scale, scale)
}
}
return Promise.all(pending)
}
}
/**
* Sheen Materials Extension
*
* Specification: https://github.com/KhronosGroup/glTF/tree/main/extensions/2.0/Khronos/KHR_materials_sheen
*/
class GLTFMaterialsSheenExtension {
constructor(parser) {
this.parser = parser
this.name = EXTENSIONS.KHR_MATERIALS_SHEEN
}
getMaterialType(materialIndex) {
const parser = this.parser
const materialDef = parser.json.materials[materialIndex]
if (!materialDef.extensions || !materialDef.extensions[this.name]) return null
return THREE.MeshPhysicalMaterial
}
extendMaterialParams(materialIndex, materialParams) {
const parser = this.parser
const materialDef = parser.json.materials[materialIndex]
if (!materialDef.extensions || !materialDef.extensions[this.name]) {
return Promise.resolve()
}
const pending = []
materialParams.sheenColor = new THREE.Color(0, 0, 0)
materialParams.sheenRoughness = 0
materialParams.sheen = 1
const extension = materialDef.extensions[this.name]
if (extension.sheenColorFactor !== undefined) {
materialParams.sheenColor.fromArray(extension.sheenColorFactor)
}
if (extension.sheenRoughnessFactor !== undefined) {
materialParams.sheenRoughness = extension.sheenRoughnessFactor
}
if (extension.sheenColorTexture !== undefined) {
pending.push(parser.assignTexture(materialParams, 'sheenColorMap', extension.sheenColorTexture))
}
if (extension.sheenRoughnessTexture !== undefined) {
pending.push(parser.assignTexture(materialParams, 'sheenRoughnessMap', extension.sheenRoughnessTexture))
}
return Promise.all(pending)
}
}
/**
* Transmission Materials Extension
*
* Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_transmission
* Draft: https://github.com/KhronosGroup/glTF/pull/1698
*/
class GLTFMaterialsTransmissionExtension {
constructor(parser) {
this.parser = parser
this.name = EXTENSIONS.KHR_MATERIALS_TRANSMISSION
}
getMaterialType(materialIndex) {
const parser = this.parser
const materialDef = parser.json.materials[materialIndex]
if (!materialDef.extensions || !materialDef.extensions[this.name]) return null
return THREE.MeshPhysicalMaterial
}
extendMaterialParams(materialIndex, materialParams) {
const parser = this.parser
const materialDef = parser.json.materials[materialIndex]
if (!materialDef.extensions || !materialDef.extensions[this.name]) {
return Promise.resolve()
}
const pending = []
const extension = materialDef.extensions[this.name]
if (extension.transmissionFactor !== undefined) {
materialParams.transmission = extension.transmissionFactor
}
if (extension.transmissionTexture !== undefined) {
pending.push(parser.assignTexture(materialParams, 'transmissionMap', extension.transmissionTexture))
}
return Promise.all(pending)
}
}
/**
* Materials Volume Extension
*
* Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_volume
*/
class GLTFMaterialsVolumeExtension {
constructor(parser) {
this.parser = parser
this.name = EXTENSIONS.KHR_MATERIALS_VOLUME
}
getMaterialType(materialIndex) {
const parser = this.parser
const materialDef = parser.json.materials[materialIndex]
if (!materialDef.extensions || !materialDef.extensions[this.name]) return null
return THREE.MeshPhysicalMaterial
}
extendMaterialParams(materialIndex, materialParams) {
const parser = this.parser
const materialDef = parser.json.materials[materialIndex]
if (!materialDef.extensions || !materialDef.extensions[this.name]) {
return Promise.resolve()
}
const pending = []
const extension = materialDef.extensions[this.name]
materialParams.thickness = extension.thicknessFactor !== undefined ? extension.thicknessFactor : 0
if (extension.thicknessTexture !== undefined) {
pending.push(parser.assignTexture(materialParams, 'thicknessMap', extension.thicknessTexture))
}
materialParams.attenuationDistance = extension.attenuationDistance || 0
const colorArray = extension.attenuationColor || [1, 1, 1]
materialParams.attenuationColor = new THREE.Color(colorArray[0], colorArray[1], colorArray[2])
return Promise.all(pending)
}
}
/**
* Materials ior Extension
*
* Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_ior
*/
class GLTFMaterialsIorExtension {
constructor(parser) {
this.parser = parser
this.name = EXTENSIONS.KHR_MATERIALS_IOR
}
getMaterialType(materialIndex) {
const parser = this.parser
const materialDef = parser.json.materials[materialIndex]
if (!materialDef.extensions || !materialDef.extensions[this.name]) return null
return THREE.MeshPhysicalMaterial
}
extendMaterialParams(materialIndex, materialParams) {
const parser = this.parser
const materialDef = parser.json.materials[materialIndex]
if (!materialDef.extensions || !materialDef.extensions[this.name]) {
return Promise.resolve()
}
const extension = materialDef.extensions[this.name]
materialParams.ior = extension.ior !== undefined ? extension.ior : 1.5
return Promise.resolve()
}
}
/**
* Materials specular Extension
*
* Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_specular
*/
class GLTFMaterialsSpecularExtension {
constructor(parser) {
this.parser = parser
this.name = EXTENSIONS.KHR_MATERIALS_SPECULAR
}
getMaterialType(materialIndex) {
const parser = this.parser
const materialDef = parser.json.materials[materialIndex]
if (!materialDef.extensions || !materialDef.extensions[this.name]) return null
return THREE.MeshPhysicalMaterial
}
extendMaterialParams(materialIndex, materialParams) {
const parser = this.parser
const materialDef = parser.json.materials[materialIndex]
if (!materialDef.extensions || !materialDef.extensions[this.name]) {
return Promise.resolve()
}
const pending = []
const extension = materialDef.extensions[this.name]
materialParams.specularIntensity = extension.specularFactor !== undefined ? extension.specularFactor : 1.0
if (extension.specularTexture !== undefined) {
pending.push(parser.assignTexture(materialParams, 'specularIntensityMap', extension.specularTexture))
}
const colorArray = extension.specularColorFactor || [1, 1, 1]
materialParams.specularColor = new THREE.Color(colorArray[0], colorArray[1], colorArray[2])
if (extension.specularColorTexture !== undefined) {
pending.push(
parser.assignTexture(materialParams, 'specularColorMap', extension.specularColorTexture).then(function (texture) {
texture.encoding = THREE.sRGBEncoding
})
)
}
return Promise.all(pending)
}
}
/**
* BasisU THREE.Texture Extension
*
* Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_texture_basisu
*/
class GLTFTextureBasisUExtension {
constructor(parser) {
this.parser = parser
this.name = EXTENSIONS.KHR_TEXTURE_BASISU
}
loadTexture(textureIndex) {
const parser = this.parser
const json = parser.json
const textureDef = json.textures[textureIndex]
if (!textureDef.extensions || !textureDef.extensions[this.name]) {
return null
}
const extension = textureDef.extensions[this.name]
const source = json.images[extension.source]
const loader = parser.options.ktx2Loader
if (!loader) {
if (json.extensionsRequired && json.extensionsRequired.indexOf(this.name) >= 0) {
throw new Error('THREE.GLTFLoader: setKTX2Loader must be called before loading KTX2 textures')
} else {
// Assumes that the extension is optional and that a fallback texture is present
return null
}
}
return parser.loadTextureImage(textureIndex, source, loader)
}
}
/**
* WebP THREE.Texture Extension
*
* Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Vendor/EXT_texture_webp
*/
class GLTFTextureWebPExtension {
constructor(parser) {
this.parser = parser
this.name = EXTENSIONS.EXT_TEXTURE_WEBP
this.isSupported = null
}
loadTexture(textureIndex) {
const name = this.name
const parser = this.parser
const json = parser.json
const textureDef = json.textures[textureIndex]
if (!textureDef.extensions || !textureDef.extensions[name]) {
return null
}
const extension = textureDef.extensions[name]
const source = json.images[extension.source]
let loader = parser.textureLoader
if (source.uri) {
const handler = parser.options.manager.getHandler(source.uri)
if (handler !== null) loader = handler
}
return this.detectSupport().then(function (isSupported) {
if (isSupported) return parser.loadTextureImage(textureIndex, source, loader)
if (json.extensionsRequired && json.extensionsRequired.indexOf(name) >= 0) {
throw new Error('THREE.GLTFLoader: WebP required by asset but unsupported.')
} // Fall back to PNG or JPEG.
return parser.loadTexture(textureIndex)
})
}
detectSupport() {
if (!this.isSupported) {
this.isSupported = new Promise(function (resolve) {
const image = new Image() // Lossy test image. Support for lossy images doesn't guarantee support for all
// WebP images, unfortunately.
image.src = 'data:image/webp;base64,UklGRiIAAABXRUJQVlA4IBYAAAAwAQCdASoBAAEADsD+JaQAA3AAAAAA'
image.onload = image.onerror = function () {
resolve(image.height === 1)
}
})
}
return this.isSupported
}
}
/**
* meshopt BufferView Compression Extension
*
* Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Vendor/EXT_meshopt_compression
*/
class GLTFMeshoptCompression {
constructor(parser) {
this.name = EXTENSIONS.EXT_MESHOPT_COMPRESSION
this.parser = parser
}
loadBufferView(index) {
const json = this.parser.json
const bufferView = json.bufferViews[index]
if (bufferView.extensions && bufferView.extensions[this.name]) {
const extensionDef = bufferView.extensions[this.name]
const buffer = this.parser.getDependency('buffer', extensionDef.buffer)
const decoder = this.parser.options.meshoptDecoder
if (!decoder || !decoder.supported) {
if (json.extensionsRequired && json.extensionsRequired.indexOf(this.name) >= 0) {
throw new Error('THREE.GLTFLoader: setMeshoptDecoder must be called before loading compressed files')
} else {
// Assumes that the extension is optional and that fallback buffer data is present
return null
}
}
return Promise.all([buffer, decoder.ready]).then(function (res) {
const byteOffset = extensionDef.byteOffset || 0
const byteLength = extensionDef.byteLength || 0
const count = extensionDef.count
const stride = extensionDef.byteStride
const result = new ArrayBuffer(count * stride)
const source = new Uint8Array(res[0], byteOffset, byteLength)
decoder.decodeGltfBuffer(new Uint8Array(result), count, stride, source, extensionDef.mode, extensionDef.filter)
return result
})
} else {
return null
}
}
}
/* BINARY EXTENSION */
const BINARY_EXTENSION_HEADER_MAGIC = 'glTF'
const BINARY_EXTENSION_HEADER_LENGTH = 12
const BINARY_EXTENSION_CHUNK_TYPES = {
JSON: 0x4e4f534a,
BIN: 0x004e4942
}
class GLTFBinaryExtension {
constructor(data) {
this.name = EXTENSIONS.KHR_BINARY_GLTF
this.content = null
this.body = null
const headerView = new DataView(data, 0, BINARY_EXTENSION_HEADER_LENGTH)
this.header = {
magic: THREE.LoaderUtils.decodeText(new Uint8Array(data.slice(0, 4))),
version: headerView.getUint32(4, true),
length: headerView.getUint32(8, true)
}
if (this.header.magic !== BINARY_EXTENSION_HEADER_MAGIC) {
throw new Error('THREE.GLTFLoader: Unsupported glTF-Binary header.')
} else if (this.header.version < 2.0) {
throw new Error('THREE.GLTFLoader: Legacy binary file detected.')
}
const chunkContentsLength = this.header.length - BINARY_EXTENSION_HEADER_LENGTH
const chunkView = new DataView(data, BINARY_EXTENSION_HEADER_LENGTH)
let chunkIndex = 0
while (chunkIndex < chunkContentsLength) {
const chunkLength = chunkView.getUint32(chunkIndex, true)
chunkIndex += 4
const chunkType = chunkView.getUint32(chunkIndex, true)
chunkIndex += 4
if (chunkType === BINARY_EXTENSION_CHUNK_TYPES.JSON) {
const contentArray = new Uint8Array(data, BINARY_EXTENSION_HEADER_LENGTH + chunkIndex, chunkLength)
this.content = THREE.LoaderUtils.decodeText(contentArray)
} else if (chunkType === BINARY_EXTENSION_CHUNK_TYPES.BIN) {
const byteOffset = BINARY_EXTENSION_HEADER_LENGTH + chunkIndex
this.body = data.slice(byteOffset, byteOffset + chunkLength)
} // Clients must ignore chunks with unknown types.
chunkIndex += chunkLength
}
if (this.content === null) {
throw new Error('THREE.GLTFLoader: JSON content not found.')
}
}
}
/**
* DRACO THREE.Mesh Compression Extension
*
* Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_draco_mesh_compression
*/
class GLTFDracoMeshCompressionExtension {
constructor(json, dracoLoader) {
if (!dracoLoader) {
throw new Error('THREE.GLTFLoader: No DRACOLoader instance provided.')
}
this.name = EXTENSIONS.KHR_DRACO_MESH_COMPRESSION
this.json = json
this.dracoLoader = dracoLoader
this.dracoLoader.preload()
}
decodePrimitive(primitive, parser) {
const json = this.json
const dracoLoader = this.dracoLoader
const bufferViewIndex = primitive.extensions[this.name].bufferView
const gltfAttributeMap = primitive.extensions[this.name].attributes
const threeAttributeMap = {}
const attributeNormalizedMap = {}
const attributeTypeMap = {}
for (const attributeName in gltfAttributeMap) {
const threeAttributeName = ATTRIBUTES[attributeName] || attributeName.toLowerCase()
threeAttributeMap[threeAttributeName] = gltfAttributeMap[attributeName]
}
for (const attributeName in primitive.attributes) {
const threeAttributeName = ATTRIBUTES[attributeName] || attributeName.toLowerCase()
if (gltfAttributeMap[attributeName] !== undefined) {
const accessorDef = json.accessors[primitive.attributes[attributeName]]
const componentType = WEBGL_COMPONENT_TYPES[accessorDef.componentType]
attributeTypeMap[threeAttributeName] = componentType
attributeNormalizedMap[threeAttributeName] = accessorDef.normalized === true
}
}
return parser.getDependency('bufferView', bufferViewIndex).then(function (bufferView) {
return new Promise(function (resolve) {
dracoLoader.decodeDracoFile(
bufferView,
function (geometry) {
for (const attributeName in geometry.attributes) {
const attribute = geometry.attributes[attributeName]
const normalized = attributeNormalizedMap[attributeName]
if (normalized !== undefined) attribute.normalized = normalized
}
resolve(geometry)
},
threeAttributeMap,
attributeTypeMap
)
})
})
}
}
/**
* THREE.Texture Transform Extension
*
* Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_texture_transform
*/
class GLTFTextureTransformExtension {
constructor() {
this.name = EXTENSIONS.KHR_TEXTURE_TRANSFORM
}
extendTexture(texture, transform) {
if (transform.texCoord !== undefined) {
// WARNING SUPPRESSED BY LOCAL PATCH
// console.warn( 'THREE.GLTFLoader: Custom UV sets in "' + this.name + '" extension not yet supported.' );
}
if (transform.offset === undefined && transform.rotation === undefined && transform.scale === undefined) {
// See https://github.com/mrdoob/three.js/issues/21819.
return texture
}
texture = texture.clone()
if (transform.offset !== undefined) {
texture.offset.fromArray(transform.offset)
}
if (transform.rotation !== undefined) {
texture.rotation = transform.rotation
}
if (transform.scale !== undefined) {
texture.repeat.fromArray(transform.scale)
}
texture.needsUpdate = true
return texture
}
}
/**
* Specular-Glossiness Extension
*
* Specification: https://github.com/KhronosGroup/glTF/tree/main/extensions/2.0/Archived/KHR_materials_pbrSpecularGlossiness
*/
/**
* A sub class of StandardMaterial with some of the functionality
* changed via the `onBeforeCompile` callback
* @pailhead
*/
class GLTFMeshStandardSGMaterial extends THREE.MeshStandardMaterial {
constructor(params) {
super()
this.isGLTFSpecularGlossinessMaterial = true //various chunks that need replacing
const specularMapParsFragmentChunk = ['#ifdef USE_SPECULARMAP', ' uniform sampler2D specularMap;', '#endif'].join('\n')
const glossinessMapParsFragmentChunk = ['#ifdef USE_GLOSSINESSMAP', ' uniform sampler2D glossinessMap;', '#endif'].join('\n')
const specularMapFragmentChunk = [
'vec3 specularFactor = specular;',
'#ifdef USE_SPECULARMAP',
' vec4 texelSpecular = texture2D( specularMap, vUv );',
' texelSpecular = sRGBToLinear( texelSpecular );',
' // reads channel RGB, compatible with a glTF Specular-Glossiness (RGBA) texture',
' specularFactor *= texelSpecular.rgb;',
'#endif'
].join('\n')
const glossinessMapFragmentChunk = [
'float glossinessFactor = glossiness;',
'#ifdef USE_GLOSSINESSMAP',
' vec4 texelGlossiness = texture2D( glossinessMap, vUv );',
' // reads channel A, compatible with a glTF Specular-Glossiness (RGBA) texture',
' glossinessFactor *= texelGlossiness.a;',
'#endif'
].join('\n')
const lightPhysicalFragmentChunk = [
'PhysicalMaterial material;',
'material.diffuseColor = diffuseColor.rgb * ( 1. - max( specularFactor.r, max( specularFactor.g, specularFactor.b ) ) );',
'vec3 dxy = max( abs( dFdx( geometryNormal ) ), abs( dFdy( geometryNormal ) ) );',
'float geometryRoughness = max( max( dxy.x, dxy.y ), dxy.z );',
'material.roughness = max( 1.0 - glossinessFactor, 0.0525 ); // 0.0525 corresponds to the base mip of a 256 cubemap.',
'material.roughness += geometryRoughness;',
'material.roughness = min( material.roughness, 1.0 );',
'material.specularColor = specularFactor;'
].join('\n')
const uniforms = {
specular: {
value: new THREE.Color().setHex(0xffffff)
},
glossiness: {
value: 1
},
specularMap: {
value: null
},
glossinessMap: {
value: null
}
}
this._extraUniforms = uniforms
this.onBeforeCompile = function (shader) {
for (const uniformName in uniforms) {
shader.uniforms[uniformName] = uniforms[uniformName]
}
shader.fragmentShader = shader.fragmentShader
.replace('uniform float roughness;', 'uniform vec3 specular;')
.replace('uniform float metalness;', 'uniform float glossiness;')
.replace('#include <roughnessmap_pars_fragment>', specularMapParsFragmentChunk)
.replace('#include <metalnessmap_pars_fragment>', glossinessMapParsFragmentChunk)
.replace('#include <roughnessmap_fragment>', specularMapFragmentChunk)
.replace('#include <metalnessmap_fragment>', glossinessMapFragmentChunk)
.replace('#include <lights_physical_fragment>', lightPhysicalFragmentChunk)
}
Object.defineProperties(this, {
specular: {
get: function () {
return uniforms.specular.value
},
set: function (v) {
uniforms.specular.value = v
}
},
specularMap: {
get: function () {
return uniforms.specularMap.value
},
set: function (v) {
uniforms.specularMap.value = v
if (v) {
this.defines.USE_SPECULARMAP = '' // USE_UV is set by the renderer for specular maps
} else {
delete this.defines.USE_SPECULARMAP
}
}
},
glossiness: {
get: function () {
return uniforms.glossiness.value
},
set: function (v) {
uniforms.glossiness.value = v
}
},
glossinessMap: {
get: function () {
return uniforms.glossinessMap.value
},
set: function (v) {
uniforms.glossinessMap.value = v
if (v) {
this.defines.USE_GLOSSINESSMAP = ''
this.defines.USE_UV = ''
} else {
delete this.defines.USE_GLOSSINESSMAP
delete this.defines.USE_UV
}
}
}
})
delete this.metalness
delete this.roughness
delete this.metalnessMap
delete this.roughnessMap
this.setValues(params)
}
copy(source) {
super.copy(source)
this.specularMap = source.specularMap
this.specular.copy(source.specular)
this.glossinessMap = source.glossinessMap
this.glossiness = source.glossiness
delete this.metalness
delete this.roughness
delete this.metalnessMap
delete this.roughnessMap
return this
}
}
class GLTFMaterialsPbrSpecularGlossinessExtension {
constructor() {
this.name = EXTENSIONS.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS
this.specularGlossinessParams = [
'color',
'map',
'lightMap',
'lightMapIntensity',
'aoMap',
'aoMapIntensity',
'emissive',
'emissiveIntensity',
'emissiveMap',
'bumpMap',
'bumpScale',
'normalMap',
'normalMapType',
'displacementMap',
'displacementScale',
'displacementBias',
'specularMap',
'specular',
'glossinessMap',
'glossiness',
'alphaMap',
'envMap',
'envMapIntensity',
'refractionRatio'
]
}
getMaterialType() {
return GLTFMeshStandardSGMaterial
}
extendParams(materialParams, materialDef, parser) {
const pbrSpecularGlossiness = materialDef.extensions[this.name]
materialParams.color = new THREE.Color(1.0, 1.0, 1.0)
materialParams.opacity = 1.0
const pending = []
if (Array.isArray(pbrSpecularGlossiness.diffuseFactor)) {
const array = pbrSpecularGlossiness.diffuseFactor
materialParams.color.fromArray(array)
materialParams.opacity = array[3]
}
if (pbrSpecularGlossiness.diffuseTexture !== undefined) {
pending.push(parser.assignTexture(materialParams, 'map', pbrSpecularGlossiness.diffuseTexture))
}
materialParams.emissive = new THREE.Color(0.0, 0.0, 0.0)
materialParams.glossiness = pbrSpecularGlossiness.glossinessFactor !== undefined ? pbrSpecularGlossiness.glossinessFactor : 1.0
materialParams.specular = new THREE.Color(1.0, 1.0, 1.0)
if (Array.isArray(pbrSpecularGlossiness.specularFactor)) {
materialParams.specular.fromArray(pbrSpecularGlossiness.specularFactor)
}
if (pbrSpecularGlossiness.specularGlossinessTexture !== undefined) {
const specGlossMapDef = pbrSpecularGlossiness.specularGlossinessTexture
pending.push(parser.assignTexture(materialParams, 'glossinessMap', specGlossMapDef))
pending.push(parser.assignTexture(materialParams, 'specularMap', specGlossMapDef))
}
return Promise.all(pending)
}
createMaterial(materialParams) {
const material = new GLTFMeshStandardSGMaterial(materialParams)
material.fog = true
material.color = materialParams.color
material.map = materialParams.map === undefined ? null : materialParams.map
material.lightMap = null
material.lightMapIntensity = 1.0
material.aoMap = materialParams.aoMap === undefined ? null : materialParams.aoMap
material.aoMapIntensity = 1.0
material.emissive = materialParams.emissive
material.emissiveIntensity = 1.0
material.emissiveMap = materialParams.emissiveMap === undefined ? null : materialParams.emissiveMap
material.bumpMap = materialParams.bumpMap === undefined ? null : materialParams.bumpMap
material.bumpScale = 1
material.normalMap = materialParams.normalMap === undefined ? null : materialParams.normalMap
material.normalMapType = THREE.TangentSpaceNormalMap
if (materialParams.normalScale) material.normalScale = materialParams.normalScale
material.displacementMap = null
material.displacementScale = 1
material.displacementBias = 0
material.specularMap = materialParams.specularMap === undefined ? null : materialParams.specularMap
material.specular = materialParams.specular
material.glossinessMap = materialParams.glossinessMap === undefined ? null : materialParams.glossinessMap
material.glossiness = materialParams.glossiness
material.alphaMap = null
material.envMap = materialParams.envMap === undefined ? null : materialParams.envMap
material.envMapIntensity = 1.0
material.refractionRatio = 0.98
return material
}
}
/**
* THREE.Mesh Quantization Extension
*
* Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_mesh_quantization
*/
class GLTFMeshQuantizationExtension {
constructor() {
this.name = EXTENSIONS.KHR_MESH_QUANTIZATION
}
}
/*********************************/
/********** INTERPOLATION ********/
/*********************************/
// Spline Interpolation
// Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#appendix-c-spline-interpolation
class GLTFCubicSplineInterpolant extends THREE.Interpolant {
constructor(parameterPositions, sampleValues, sampleSize, resultBuffer) {
super(parameterPositions, sampleValues, sampleSize, resultBuffer)
}
copySampleValue_(index) {
// Copies a sample value to the result buffer. See description of glTF
// CUBICSPLINE values layout in interpolate_() function below.
const result = this.resultBuffer,
values = this.sampleValues,
valueSize = this.valueSize,
offset = index * valueSize * 3 + valueSize
for (let i = 0; i !== valueSize; i++) {
result[i] = values[offset + i]
}
return result
}
}
GLTFCubicSplineInterpolant.prototype.beforeStart_ = GLTFCubicSplineInterpolant.prototype.copySampleValue_
GLTFCubicSplineInterpolant.prototype.afterEnd_ = GLTFCubicSplineInterpolant.prototype.copySampleValue_
GLTFCubicSplineInterpolant.prototype.interpolate_ = function (i1, t0, t, t1) {
const result = this.resultBuffer
const values = this.sampleValues
const stride = this.valueSize
const stride2 = stride * 2
const stride3 = stride * 3
const td = t1 - t0
const p = (t - t0) / td
const pp = p * p
const ppp = pp * p
const offset1 = i1 * stride3
const offset0 = offset1 - stride3
const s2 = -2 * ppp + 3 * pp
const s3 = ppp - pp
const s0 = 1 - s2
const s1 = s3 - pp + p // Layout of keyframe output values for CUBICSPLINE animations:
// [ inTangent_1, splineVertex_1, outTangent_1, inTangent_2, splineVertex_2, ... ]
for (let i = 0; i !== stride; i++) {
const p0 = values[offset0 + i + stride] // splineVertex_k
const m0 = values[offset0 + i + stride2] * td // outTangent_k * (t_k+1 - t_k)
const p1 = values[offset1 + i + stride] // splineVertex_k+1
const m1 = values[offset1 + i] * td // inTangent_k+1 * (t_k+1 - t_k)
result[i] = s0 * p0 + s1 * m0 + s2 * p1 + s3 * m1
}
return result
}
const _q = new THREE.Quaternion()
class GLTFCubicSplineQuaternionInterpolant extends GLTFCubicSplineInterpolant {
interpolate_(i1, t0, t, t1) {
const result = super.interpolate_(i1, t0, t, t1)
_q.fromArray(result).normalize().toArray(result)
return result
}
}
/*********************************/
/********** INTERNALS ************/
/*********************************/
/* CONSTANTS */
const WEBGL_CONSTANTS = {
FLOAT: 5126,
//FLOAT_MAT2: 35674,
FLOAT_MAT3: 35675,
FLOAT_MAT4: 35676,
FLOAT_VEC2: 35664,
FLOAT_VEC3: 35665,
FLOAT_VEC4: 35666,
LINEAR: 9729,
REPEAT: 10497,
SAMPLER_2D: 35678,
POINTS: 0,
LINES: 1,
LINE_LOOP: 2,
LINE_STRIP: 3,
TRIANGLES: 4,
TRIANGLE_STRIP: 5,
TRIANGLE_FAN: 6,
UNSIGNED_BYTE: 5121,
UNSIGNED_SHORT: 5123
}
const WEBGL_COMPONENT_TYPES = {
5120: Int8Array,
5121: Uint8Array,
5122: Int16Array,
5123: Uint16Array,
5125: Uint32Array,
5126: Float32Array
}
const WEBGL_FILTERS = {
9728: THREE.NearestFilter,
9729: THREE.LinearFilter,
9984: THREE.NearestMipmapNearestFilter,
9985: THREE.LinearMipmapNearestFilter,
9986: THREE.NearestMipmapLinearFilter,
9987: THREE.LinearMipmapLinearFilter
}
const WEBGL_WRAPPINGS = {
33071: THREE.ClampToEdgeWrapping,
33648: THREE.MirroredRepeatWrapping,
10497: THREE.RepeatWrapping
}
const WEBGL_TYPE_SIZES = {
SCALAR: 1,
VEC2: 2,
VEC3: 3,
VEC4: 4,
MAT2: 4,
MAT3: 9,
MAT4: 16
}
const ATTRIBUTES = {
POSITION: 'position',
NORMAL: 'normal',
TANGENT: 'tangent',
TEXCOORD_0: 'uv',
TEXCOORD_1: 'uv2',
COLOR_0: 'color',
WEIGHTS_0: 'skinWeight',
JOINTS_0: 'skinIndex'
}
const PATH_PROPERTIES = {
scale: 'scale',
translation: 'position',
rotation: 'quaternion',
weights: 'morphTargetInfluences'
}
const INTERPOLATION = {
CUBICSPLINE: undefined,
// We use a custom interpolant (GLTFCubicSplineInterpolation) for CUBICSPLINE tracks. Each
// keyframe track will be initialized with a default interpolation type, then modified.
LINEAR: THREE.InterpolateLinear,
STEP: THREE.InterpolateDiscrete
}
const ALPHA_MODES = {
OPAQUE: 'OPAQUE',
MASK: 'MASK',
BLEND: 'BLEND'
}
/**
* Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#default-material
*/
function createDefaultMaterial(cache) {
if (cache['DefaultMaterial'] === undefined) {
cache['DefaultMaterial'] = new THREE.MeshStandardMaterial({
color: 0xffffff,
emissive: 0x000000,
metalness: 1,
roughness: 1,
transparent: false,
depthTest: true,
side: THREE.FrontSide
})
}
return cache['DefaultMaterial']
}
function addUnknownExtensionsToUserData(knownExtensions, object, objectDef) {
// Add unknown glTF extensions to an object's userData.
for (const name in objectDef.extensions) {
if (knownExtensions[name] === undefined) {
object.userData.gltfExtensions = object.userData.gltfExtensions || {}
object.userData.gltfExtensions[name] = objectDef.extensions[name]
}
}
}
/**
* @param {Object3D|Material|BufferGeometry} object
* @param {GLTF.definition} gltfDef
*/
function assignExtrasToUserData(object, gltfDef) {
if (gltfDef.extras !== undefined) {
if (typeof gltfDef.extras === 'object') {
Object.assign(object.userData, gltfDef.extras)
} else {
console.warn('THREE.GLTFLoader: Ignoring primitive type .extras, ' + gltfDef.extras)
}
}
}
/**
* Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#morph-targets
*
* @param {BufferGeometry} geometry
* @param {Array<GLTF.Target>} targets
* @param {GLTFParser} parser
* @return {Promise<BufferGeometry>}
*/
function addMorphTargets(geometry, targets, parser) {
let hasMorphPosition = false
let hasMorphNormal = false
for (let i = 0, il = targets.length; i < il; i++) {
const target = targets[i]
if (target.POSITION !== undefined) hasMorphPosition = true
if (target.NORMAL !== undefined) hasMorphNormal = true
if (hasMorphPosition && hasMorphNormal) break
}
if (!hasMorphPosition && !hasMorphNormal) return Promise.resolve(geometry)
const pendingPositionAccessors = []
const pendingNormalAccessors = []
for (let i = 0, il = targets.length; i < il; i++) {
const target = targets[i]
if (hasMorphPosition) {
const pendingAccessor = target.POSITION !== undefined ? parser.getDependency('accessor', target.POSITION) : geometry.attributes.position
pendingPositionAccessors.push(pendingAccessor)
}
if (hasMorphNormal) {
const pendingAccessor = target.NORMAL !== undefined ? parser.getDependency('accessor', target.NORMAL) : geometry.attributes.normal
pendingNormalAccessors.push(pendingAccessor)
}
}
return Promise.all([Promise.all(pendingPositionAccessors), Promise.all(pendingNormalAccessors)]).then(function (accessors) {
const morphPositions = accessors[0]
const morphNormals = accessors[1]
if (hasMorphPosition) geometry.morphAttributes.position = morphPositions
if (hasMorphNormal) geometry.morphAttributes.normal = morphNormals
geometry.morphTargetsRelative = true
return geometry
})
}
/**
* @param {Mesh} mesh
* @param {GLTF.Mesh} meshDef
*/
function updateMorphTargets(mesh, meshDef) {
mesh.updateMorphTargets()
if (meshDef.weights !== undefined) {
for (let i = 0, il = meshDef.weights.length; i < il; i++) {
mesh.morphTargetInfluences[i] = meshDef.weights[i]
}
} // .extras has user-defined data, so check that .extras.targetNames is an array.
if (meshDef.extras && Array.isArray(meshDef.extras.targetNames)) {
const targetNames = meshDef.extras.targetNames
if (mesh.morphTargetInfluences.length === targetNames.length) {
mesh.morphTargetDictionary = {}
for (let i = 0, il = targetNames.length; i < il; i++) {
mesh.morphTargetDictionary[targetNames[i]] = i
}
} else {
console.warn('THREE.GLTFLoader: Invalid extras.targetNames length. Ignoring names.')
}
}
}
function createPrimitiveKey(primitiveDef) {
const dracoExtension = primitiveDef.extensions && primitiveDef.extensions[EXTENSIONS.KHR_DRACO_MESH_COMPRESSION]
let geometryKey
if (dracoExtension) {
geometryKey = 'draco:' + dracoExtension.bufferView + ':' + dracoExtension.indices + ':' + createAttributesKey(dracoExtension.attributes)
} else {
geometryKey = primitiveDef.indices + ':' + createAttributesKey(primitiveDef.attributes) + ':' + primitiveDef.mode
}
return geometryKey
}
function createAttributesKey(attributes) {
let attributesKey = ''
const keys = Object.keys(attributes).sort()
for (let i = 0, il = keys.length; i < il; i++) {
attributesKey += keys[i] + ':' + attributes[keys[i]] + ';'
}
return attributesKey
}
function getNormalizedComponentScale(constructor) {
// Reference:
// https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_mesh_quantization#encoding-quantized-data
switch (constructor) {
case Int8Array:
return 1 / 127
case Uint8Array:
return 1 / 255
case Int16Array:
return 1 / 32767
case Uint16Array:
return 1 / 65535
default:
throw new Error('THREE.GLTFLoader: Unsupported normalized accessor component type.')
}
}
/* GLTF PARSER */
class GLTFParser {
constructor(json = {}, options = {}) {
this.json = json
this.extensions = {}
this.plugins = {}
this.options = options // loader object cache
this.cache = new GLTFRegistry() // associations between Three.js objects and glTF elements
this.associations = new Map() // THREE.BufferGeometry caching
this.primitiveCache = {} // THREE.Object3D instance caches
this.meshCache = {
refs: {},
uses: {}
}
this.cameraCache = {
refs: {},
uses: {}
}
this.lightCache = {
refs: {},
uses: {}
}
this.textureCache = {} // Track node names, to ensure no duplicates
this.nodeNamesUsed = {} // Use an THREE.ImageBitmapLoader if imageBitmaps are supported. Moves much of the
// expensive work of uploading a texture to the GPU off the main thread.
if (typeof createImageBitmap !== 'undefined' && /Firefox|Safari/.test(navigator.userAgent) === false) {
this.textureLoader = new THREE.ImageBitmapLoader(this.options.manager)
} else {
this.textureLoader = new THREE.TextureLoader(this.options.manager)
}
this.textureLoader.setCrossOrigin(this.options.crossOrigin)
this.textureLoader.setRequestHeader(this.options.requestHeader)
this.fileLoader = new THREE.FileLoader(this.options.manager)
this.fileLoader.setResponseType('arraybuffer')
if (this.options.crossOrigin === 'use-credentials') {
this.fileLoader.setWithCredentials(true)
}
}
setExtensions(extensions) {
this.extensions = extensions
}
setPlugins(plugins) {
this.plugins = plugins
}
parse(onLoad, onError) {
const parser = this
const json = this.json
const extensions = this.extensions // Clear the loader cache
this.cache.removeAll() // Mark the special nodes/meshes in json for efficient parse
this._invokeAll(function (ext) {
return ext._markDefs && ext._markDefs()
})
Promise.all(
this._invokeAll(function (ext) {
return ext.beforeRoot && ext.beforeRoot()
})
)
.then(function () {
return Promise.all([parser.getDependencies('scene'), parser.getDependencies('animation'), parser.getDependencies('camera')])
})
.then(function (dependencies) {
const result = {
scene: dependencies[0][json.scene || 0],
scenes: dependencies[0],
animations: dependencies[1],
cameras: dependencies[2],
asset: json.asset,
parser: parser,
userData: {}
}
addUnknownExtensionsToUserData(extensions, result, json)
assignExtrasToUserData(result, json)
Promise.all(
parser._invokeAll(function (ext) {
return ext.afterRoot && ext.afterRoot(result)
})
).then(function () {
onLoad(result)
})
})
.catch(onError)
}
/**
* Marks the special nodes/meshes in json for efficient parse.
*/
_markDefs() {
const nodeDefs = this.json.nodes || []
const skinDefs = this.json.skins || []
const meshDefs = this.json.meshes || [] // Nothing in the node definition indicates whether it is a THREE.Bone or an
// THREE.Object3D. Use the skins' joint references to mark bones.
for (let skinIndex = 0, skinLength = skinDefs.length; skinIndex < skinLength; skinIndex++) {
const joints = skinDefs[skinIndex].joints
for (let i = 0, il = joints.length; i < il; i++) {
nodeDefs[joints[i]].isBone = true
}
} // Iterate over all nodes, marking references to shared resources,
// as well as skeleton joints.
for (let nodeIndex = 0, nodeLength = nodeDefs.length; nodeIndex < nodeLength; nodeIndex++) {
const nodeDef = nodeDefs[nodeIndex]
if (nodeDef.mesh !== undefined) {
this._addNodeRef(this.meshCache, nodeDef.mesh) // Nothing in the mesh definition indicates whether it is
// a THREE.SkinnedMesh or THREE.Mesh. Use the node's mesh reference
// to mark THREE.SkinnedMesh if node has skin.
if (nodeDef.skin !== undefined) {
meshDefs[nodeDef.mesh].isSkinnedMesh = true
}
}
if (nodeDef.camera !== undefined) {
this._addNodeRef(this.cameraCache, nodeDef.camera)
}
}
}
/**
* Counts references to shared node / THREE.Object3D resources. These resources
* can be reused, or "instantiated", at multiple nodes in the scene
* hierarchy. THREE.Mesh, Camera, and Light instances are instantiated and must
* be marked. Non-scenegraph resources (like Materials, Geometries, and
* Textures) can be reused directly and are not marked here.
*
* Example: CesiumMilkTruck sample model reuses "Wheel" meshes.
*/
_addNodeRef(cache, index) {
if (index === undefined) return
if (cache.refs[index] === undefined) {
cache.refs[index] = cache.uses[index] = 0
}
cache.refs[index]++
}
/** Returns a reference to a shared resource, cloning it if necessary. */
_getNodeRef(cache, index, object) {
if (cache.refs[index] <= 1) return object
const ref = object.clone() // Propagates mappings to the cloned object, prevents mappings on the
// original object from being lost.
const updateMappings = (original, clone) => {
const mappings = this.associations.get(original)
if (mappings != null) {
this.associations.set(clone, mappings)
}
for (const [i, child] of original.children.entries()) {
updateMappings(child, clone.children[i])
}
}
updateMappings(object, ref)
ref.name += '_instance_' + cache.uses[index]++
return ref
}
_invokeOne(func) {
const extensions = Object.values(this.plugins)
extensions.push(this)
for (let i = 0; i < extensions.length; i++) {
const result = func(extensions[i])
if (result) return result
}
return null
}
_invokeAll(func) {
const extensions = Object.values(this.plugins)
extensions.unshift(this)
const pending = []
for (let i = 0; i < extensions.length; i++) {
const result = func(extensions[i])
if (result) pending.push(result)
}
return pending
}
/**
* Requests the specified dependency asynchronously, with caching.
* @param {string} type
* @param {number} index
* @return {Promise<Object3D|Material|THREE.Texture|AnimationClip|ArrayBuffer|Object>}
*/
getDependency(type, index) {
const cacheKey = type + ':' + index
let dependency = this.cache.get(cacheKey)
if (!dependency) {
switch (type) {
case 'scene':
dependency = this.loadScene(index)
break
case 'node':
dependency = this.loadNode(index)
break
case 'mesh':
dependency = this._invokeOne(function (ext) {
return ext.loadMesh && ext.loadMesh(index)
})
break
case 'accessor':
dependency = this.loadAccessor(index)
break
case 'bufferView':
dependency = this._invokeOne(function (ext) {
return ext.loadBufferView && ext.loadBufferView(index)
})
break
case 'buffer':
dependency = this.loadBuffer(index)
break
case 'material':
dependency = this._invokeOne(function (ext) {
return ext.loadMaterial && ext.loadMaterial(index)
})
break
case 'texture':
dependency = this._invokeOne(function (ext) {
return ext.loadTexture && ext.loadTexture(index)
})
break
case 'skin':
dependency = this.loadSkin(index)
break
case 'animation':
dependency = this.loadAnimation(index)
break
case 'camera':
dependency = this.loadCamera(index)
break
default:
throw new Error('Unknown type: ' + type)
}
this.cache.add(cacheKey, dependency)
}
return dependency
}
/**
* Requests all dependencies of the specified type asynchronously, with caching.
* @param {string} type
* @return {Promise<Array<Object>>}
*/
getDependencies(type) {
let dependencies = this.cache.get(type)
if (!dependencies) {
const parser = this
const defs = this.json[type + (type === 'mesh' ? 'es' : 's')] || []
dependencies = Promise.all(
defs.map(function (def, index) {
return parser.getDependency(type, index)
})
)
this.cache.add(type, dependencies)
}
return dependencies
}
/**
* Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#buffers-and-buffer-views
* @param {number} bufferIndex
* @return {Promise<ArrayBuffer>}
*/
loadBuffer(bufferIndex) {
const bufferDef = this.json.buffers[bufferIndex]
const loader = this.fileLoader
if (bufferDef.type && bufferDef.type !== 'arraybuffer') {
throw new Error('THREE.GLTFLoader: ' + bufferDef.type + ' buffer type is not supported.')
} // If present, GLB container is required to be the first buffer.
if (bufferDef.uri === undefined && bufferIndex === 0) {
return Promise.resolve(this.extensions[EXTENSIONS.KHR_BINARY_GLTF].body)
}
const options = this.options
return new Promise(function (resolve, reject) {
loader.load(THREE.LoaderUtils.resolveURL(bufferDef.uri, options.path), resolve, undefined, function () {
reject(new Error('THREE.GLTFLoader: Failed to load buffer "' + bufferDef.uri + '".'))
})
})
}
/**
* Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#buffers-and-buffer-views
* @param {number} bufferViewIndex
* @return {Promise<ArrayBuffer>}
*/
loadBufferView(bufferViewIndex) {
const bufferViewDef = this.json.bufferViews[bufferViewIndex]
return this.getDependency('buffer', bufferViewDef.buffer).then(function (buffer) {
const byteLength = bufferViewDef.byteLength || 0
const byteOffset = bufferViewDef.byteOffset || 0
return buffer.slice(byteOffset, byteOffset + byteLength)
})
}
/**
* Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#accessors
* @param {number} accessorIndex
* @return {Promise<BufferAttribute|InterleavedBufferAttribute>}
*/
loadAccessor(accessorIndex) {
const parser = this
const json = this.json
const accessorDef = this.json.accessors[accessorIndex]
if (accessorDef.bufferView === undefined && accessorDef.sparse === undefined) {
// Ignore empty accessors, which may be used to declare runtime
// information about attributes coming from another source (e.g. Draco
// compression extension).
return Promise.resolve(null)
}
const pendingBufferViews = []
if (accessorDef.bufferView !== undefined) {
pendingBufferViews.push(this.getDependency('bufferView', accessorDef.bufferView))
} else {
pendingBufferViews.push(null)
}
if (accessorDef.sparse !== undefined) {
pendingBufferViews.push(this.getDependency('bufferView', accessorDef.sparse.indices.bufferView))
pendingBufferViews.push(this.getDependency('bufferView', accessorDef.sparse.values.bufferView))
}
return Promise.all(pendingBufferViews).then(function (bufferViews) {
const bufferView = bufferViews[0]
const itemSize = WEBGL_TYPE_SIZES[accessorDef.type]
const TypedArray = WEBGL_COMPONENT_TYPES[accessorDef.componentType] // For VEC3: itemSize is 3, elementBytes is 4, itemBytes is 12.
const elementBytes = TypedArray.BYTES_PER_ELEMENT
const itemBytes = elementBytes * itemSize
const byteOffset = accessorDef.byteOffset || 0
const byteStride = accessorDef.bufferView !== undefined ? json.bufferViews[accessorDef.bufferView].byteStride : undefined
const normalized = accessorDef.normalized === true
let array, bufferAttribute // The buffer is not interleaved if the stride is the item size in bytes.
if (byteStride && byteStride !== itemBytes) {
// Each "slice" of the buffer, as defined by 'count' elements of 'byteStride' bytes, gets its own THREE.InterleavedBuffer
// This makes sure that IBA.count reflects accessor.count properly
const ibSlice = Math.floor(byteOffset / byteStride)
const ibCacheKey = 'InterleavedBuffer:' + accessorDef.bufferView + ':' + accessorDef.componentType + ':' + ibSlice + ':' + accessorDef.count
let ib = parser.cache.get(ibCacheKey)
if (!ib) {
array = new TypedArray(bufferView, ibSlice * byteStride, (accessorDef.count * byteStride) / elementBytes) // Integer parameters to IB/IBA are in array elements, not bytes.
ib = new THREE.InterleavedBuffer(array, byteStride / elementBytes)
parser.cache.add(ibCacheKey, ib)
}
bufferAttribute = new THREE.InterleavedBufferAttribute(ib, itemSize, (byteOffset % byteStride) / elementBytes, normalized)
} else {
if (bufferView === null) {
array = new TypedArray(accessorDef.count * itemSize)
} else {
array = new TypedArray(bufferView, byteOffset, accessorDef.count * itemSize)
}
bufferAttribute = new THREE.BufferAttribute(array, itemSize, normalized)
} // https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#sparse-accessors
if (accessorDef.sparse !== undefined) {
const itemSizeIndices = WEBGL_TYPE_SIZES.SCALAR
const TypedArrayIndices = WEBGL_COMPONENT_TYPES[accessorDef.sparse.indices.componentType]
const byteOffsetIndices = accessorDef.sparse.indices.byteOffset || 0
const byteOffsetValues = accessorDef.sparse.values.byteOffset || 0
const sparseIndices = new TypedArrayIndices(bufferViews[1], byteOffsetIndices, accessorDef.sparse.count * itemSizeIndices)
const sparseValues = new TypedArray(bufferViews[2], byteOffsetValues, accessorDef.sparse.count * itemSize)
if (bufferView !== null) {
// Avoid modifying the original ArrayBuffer, if the bufferView wasn't initialized with zeroes.
bufferAttribute = new THREE.BufferAttribute(bufferAttribute.array.slice(), bufferAttribute.itemSize, bufferAttribute.normalized)
}
for (let i = 0, il = sparseIndices.length; i < il; i++) {
const index = sparseIndices[i]
bufferAttribute.setX(index, sparseValues[i * itemSize])
if (itemSize >= 2) bufferAttribute.setY(index, sparseValues[i * itemSize + 1])
if (itemSize >= 3) bufferAttribute.setZ(index, sparseValues[i * itemSize + 2])
if (itemSize >= 4) bufferAttribute.setW(index, sparseValues[i * itemSize + 3])
if (itemSize >= 5) throw new Error('THREE.GLTFLoader: Unsupported itemSize in sparse THREE.BufferAttribute.')
}
}
return bufferAttribute
})
}
/**
* Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#textures
* @param {number} textureIndex
* @return {Promise<THREE.Texture>}
*/
loadTexture(textureIndex) {
const json = this.json
const options = this.options
const textureDef = json.textures[textureIndex]
const source = json.images[textureDef.source]
let loader = this.textureLoader
if (source.uri) {
const handler = options.manager.getHandler(source.uri)
if (handler !== null) loader = handler
}
return this.loadTextureImage(textureIndex, source, loader)
}
loadTextureImage(textureIndex, source, loader) {
const parser = this
const json = this.json
const options = this.options
const textureDef = json.textures[textureIndex]
const cacheKey = (source.uri || source.bufferView) + ':' + textureDef.sampler
if (this.textureCache[cacheKey]) {
// See https://github.com/mrdoob/three.js/issues/21559.
return this.textureCache[cacheKey]
}
const URL = self.URL || self.webkitURL
let sourceURI = source.uri || ''
let isObjectURL = false
if (source.bufferView !== undefined) {
// Load binary image data from bufferView, if provided.
sourceURI = parser.getDependency('bufferView', source.bufferView).then(function (bufferView) {
isObjectURL = true
const blob = new Blob([bufferView], {
type: source.mimeType
})
sourceURI = URL.createObjectURL(blob)
return sourceURI
})
} else if (source.uri === undefined) {
throw new Error('THREE.GLTFLoader: Image ' + textureIndex + ' is missing URI and bufferView')
}
const promise = Promise.resolve(sourceURI)
.then(function (sourceURI) {
return new Promise(function (resolve, reject) {
let onLoad = resolve
if (loader.isImageBitmapLoader === true) {
onLoad = function (imageBitmap) {
const texture = new THREE.Texture(imageBitmap)
texture.needsUpdate = true
resolve(texture)
}
}
loader.load(THREE.LoaderUtils.resolveURL(sourceURI, options.path), onLoad, undefined, reject)
})
})
.then(function (texture) {
// Clean up resources and configure THREE.Texture.
if (isObjectURL === true) {
URL.revokeObjectURL(sourceURI)
}
texture.flipY = false
if (textureDef.name) texture.name = textureDef.name
const samplers = json.samplers || {}
const sampler = samplers[textureDef.sampler] || {}
texture.magFilter = WEBGL_FILTERS[sampler.magFilter] || THREE.LinearFilter
texture.minFilter = WEBGL_FILTERS[sampler.minFilter] || THREE.LinearMipmapLinearFilter
texture.wrapS = WEBGL_WRAPPINGS[sampler.wrapS] || THREE.RepeatWrapping
texture.wrapT = WEBGL_WRAPPINGS[sampler.wrapT] || THREE.RepeatWrapping
parser.associations.set(texture, {
textures: textureIndex
})
return texture
})
.catch(function () {
console.error("THREE.GLTFLoader: Couldn't load texture", sourceURI)
return null
})
this.textureCache[cacheKey] = promise
return promise
}
/**
* Asynchronously assigns a texture to the given material parameters.
* @param {Object} materialParams
* @param {string} mapName
* @param {Object} mapDef
* @return {Promise<Texture>}
*/
assignTexture(materialParams, mapName, mapDef) {
const parser = this
return this.getDependency('texture', mapDef.index).then(function (texture) {
// Materials sample aoMap from UV set 1 and other maps from UV set 0 - this can't be configured
// However, we will copy UV set 0 to UV set 1 on demand for aoMap
if (mapDef.texCoord !== undefined && mapDef.texCoord != 0 && !(mapName === 'aoMap' && mapDef.texCoord == 1)) {
console.warn('THREE.GLTFLoader: Custom UV set ' + mapDef.texCoord + ' for texture ' + mapName + ' not yet supported.')
}
if (parser.extensions[EXTENSIONS.KHR_TEXTURE_TRANSFORM]) {
const transform = mapDef.extensions !== undefined ? mapDef.extensions[EXTENSIONS.KHR_TEXTURE_TRANSFORM] : undefined
if (transform) {
const gltfReference = parser.associations.get(texture)
texture = parser.extensions[EXTENSIONS.KHR_TEXTURE_TRANSFORM].extendTexture(texture, transform)
parser.associations.set(texture, gltfReference)
}
}
materialParams[mapName] = texture
return texture
})
}
/**
* Assigns final material to a THREE.Mesh, THREE.Line, or THREE.Points instance. The instance
* already has a material (generated from the glTF material options alone)
* but reuse of the same glTF material may require multiple threejs materials
* to accommodate different primitive types, defines, etc. New materials will
* be created if necessary, and reused from a cache.
* @param {Object3D} mesh THREE.Mesh, THREE.Line, or THREE.Points instance.
*/
assignFinalMaterial(mesh) {
const geometry = mesh.geometry
let material = mesh.material
const useDerivativeTangents = geometry.attributes.tangent === undefined
const useVertexColors = geometry.attributes.color !== undefined
const useFlatShading = geometry.attributes.normal === undefined
if (mesh.isPoints) {
const cacheKey = 'PointsMaterial:' + material.uuid
let pointsMaterial = this.cache.get(cacheKey)
if (!pointsMaterial) {
pointsMaterial = new THREE.PointsMaterial()
THREE.Material.prototype.copy.call(pointsMaterial, material)
pointsMaterial.color.copy(material.color)
pointsMaterial.map = material.map
pointsMaterial.sizeAttenuation = false // glTF spec says points should be 1px
this.cache.add(cacheKey, pointsMaterial)
}
material = pointsMaterial
} else if (mesh.isLine) {
const cacheKey = 'LineBasicMaterial:' + material.uuid
let lineMaterial = this.cache.get(cacheKey)
if (!lineMaterial) {
lineMaterial = new THREE.LineBasicMaterial()
THREE.Material.prototype.copy.call(lineMaterial, material)
lineMaterial.color.copy(material.color)
this.cache.add(cacheKey, lineMaterial)
}
material = lineMaterial
} // Clone the material if it will be modified
if (useDerivativeTangents || useVertexColors || useFlatShading) {
let cacheKey = 'ClonedMaterial:' + material.uuid + ':'
if (material.isGLTFSpecularGlossinessMaterial) cacheKey += 'specular-glossiness:'
if (useDerivativeTangents) cacheKey += 'derivative-tangents:'
if (useVertexColors) cacheKey += 'vertex-colors:'
if (useFlatShading) cacheKey += 'flat-shading:'
let cachedMaterial = this.cache.get(cacheKey)
if (!cachedMaterial) {
cachedMaterial = material.clone()
if (useVertexColors) cachedMaterial.vertexColors = true
if (useFlatShading) cachedMaterial.flatShading = true
if (useDerivativeTangents) {
// https://github.com/mrdoob/three.js/issues/11438#issuecomment-507003995
if (cachedMaterial.normalScale) cachedMaterial.normalScale.y *= -1
if (cachedMaterial.clearcoatNormalScale) cachedMaterial.clearcoatNormalScale.y *= -1
}
this.cache.add(cacheKey, cachedMaterial)
this.associations.set(cachedMaterial, this.associations.get(material))
}
material = cachedMaterial
} // workarounds for mesh and geometry
if (material.aoMap && geometry.attributes.uv2 === undefined && geometry.attributes.uv !== undefined) {
geometry.setAttribute('uv2', geometry.attributes.uv)
}
mesh.material = material
}
getMaterialType() {
return THREE.MeshStandardMaterial
}
/**
* Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#materials
* @param {number} materialIndex
* @return {Promise<Material>}
*/
loadMaterial(materialIndex) {
const parser = this
const json = this.json
const extensions = this.extensions
const materialDef = json.materials[materialIndex]
let materialType
const materialParams = {}
const materialExtensions = materialDef.extensions || {}
const pending = []
if (materialExtensions[EXTENSIONS.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS]) {
const sgExtension = extensions[EXTENSIONS.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS]
materialType = sgExtension.getMaterialType()
pending.push(sgExtension.extendParams(materialParams, materialDef, parser))
} else if (materialExtensions[EXTENSIONS.KHR_MATERIALS_UNLIT]) {
const kmuExtension = extensions[EXTENSIONS.KHR_MATERIALS_UNLIT]
materialType = kmuExtension.getMaterialType()
pending.push(kmuExtension.extendParams(materialParams, materialDef, parser))
} else {
// Specification:
// https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#metallic-roughness-material
const metallicRoughness = materialDef.pbrMetallicRoughness || {}
materialParams.color = new THREE.Color(1.0, 1.0, 1.0)
materialParams.opacity = 1.0
if (Array.isArray(metallicRoughness.baseColorFactor)) {
const array = metallicRoughness.baseColorFactor
materialParams.color.fromArray(array)
materialParams.opacity = array[3]
}
if (metallicRoughness.baseColorTexture !== undefined) {
pending.push(parser.assignTexture(materialParams, 'map', metallicRoughness.baseColorTexture))
}
materialParams.metalness = metallicRoughness.metallicFactor !== undefined ? metallicRoughness.metallicFactor : 1.0
materialParams.roughness = metallicRoughness.roughnessFactor !== undefined ? metallicRoughness.roughnessFactor : 1.0
if (metallicRoughness.metallicRoughnessTexture !== undefined) {
pending.push(parser.assignTexture(materialParams, 'metalnessMap', metallicRoughness.metallicRoughnessTexture))
pending.push(parser.assignTexture(materialParams, 'roughnessMap', metallicRoughness.metallicRoughnessTexture))
}
materialType = this._invokeOne(function (ext) {
return ext.getMaterialType && ext.getMaterialType(materialIndex)
})
pending.push(
Promise.all(
this._invokeAll(function (ext) {
return ext.extendMaterialParams && ext.extendMaterialParams(materialIndex, materialParams)
})
)
)
}
if (materialDef.doubleSided === true) {
materialParams.side = THREE.DoubleSide
}
const alphaMode = materialDef.alphaMode || ALPHA_MODES.OPAQUE
if (alphaMode === ALPHA_MODES.BLEND) {
materialParams.transparent = true // See: https://github.com/mrdoob/three.js/issues/17706
materialParams.depthWrite = false
} else {
materialParams.format = THREE.RGBFormat
materialParams.transparent = false
if (alphaMode === ALPHA_MODES.MASK) {
materialParams.alphaTest = materialDef.alphaCutoff !== undefined ? materialDef.alphaCutoff : 0.5
}
}
if (materialDef.normalTexture !== undefined && materialType !== THREE.MeshBasicMaterial) {
pending.push(parser.assignTexture(materialParams, 'normalMap', materialDef.normalTexture))
materialParams.normalScale = new THREE.Vector2(1, 1)
if (materialDef.normalTexture.scale !== undefined) {
const scale = materialDef.normalTexture.scale
materialParams.normalScale.set(scale, scale)
}
}
if (materialDef.occlusionTexture !== undefined && materialType !== THREE.MeshBasicMaterial) {
pending.push(parser.assignTexture(materialParams, 'aoMap', materialDef.occlusionTexture))
if (materialDef.occlusionTexture.strength !== undefined) {
materialParams.aoMapIntensity = materialDef.occlusionTexture.strength
}
}
if (materialDef.emissiveFactor !== undefined && materialType !== THREE.MeshBasicMaterial) {
materialParams.emissive = new THREE.Color().fromArray(materialDef.emissiveFactor)
}
if (materialDef.emissiveTexture !== undefined && materialType !== THREE.MeshBasicMaterial) {
pending.push(parser.assignTexture(materialParams, 'emissiveMap', materialDef.emissiveTexture))
}
return Promise.all(pending).then(function () {
let material
if (materialType === GLTFMeshStandardSGMaterial) {
material = extensions[EXTENSIONS.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS].createMaterial(materialParams)
} else {
material = new materialType(materialParams)
}
if (materialDef.name) material.name = materialDef.name // baseColorTexture, emissiveTexture, and specularGlossinessTexture use sRGB encoding.
if (material.map) material.map.encoding = THREE.sRGBEncoding
if (material.emissiveMap) material.emissiveMap.encoding = THREE.sRGBEncoding
assignExtrasToUserData(material, materialDef)
parser.associations.set(material, {
materials: materialIndex
})
if (materialDef.extensions) addUnknownExtensionsToUserData(extensions, material, materialDef)
return material
})
}
/** When THREE.Object3D instances are targeted by animation, they need unique names. */
createUniqueName(originalName) {
const sanitizedName = THREE.PropertyBinding.sanitizeNodeName(originalName || '')
let name = sanitizedName
for (let i = 1; this.nodeNamesUsed[name]; ++i) {
name = sanitizedName + '_' + i
}
this.nodeNamesUsed[name] = true
return name
}
/**
* Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#geometry
*
* Creates BufferGeometries from primitives.
*
* @param {Array<GLTF.Primitive>} primitives
* @return {Promise<Array<BufferGeometry>>}
*/
loadGeometries(primitives) {
const parser = this
const extensions = this.extensions
const cache = this.primitiveCache
function createDracoPrimitive(primitive) {
return extensions[EXTENSIONS.KHR_DRACO_MESH_COMPRESSION].decodePrimitive(primitive, parser).then(function (geometry) {
return addPrimitiveAttributes(geometry, primitive, parser)
})
}
const pending = []
for (let i = 0, il = primitives.length; i < il; i++) {
const primitive = primitives[i]
const cacheKey = createPrimitiveKey(primitive) // See if we've already created this geometry
const cached = cache[cacheKey]
if (cached) {
// Use the cached geometry if it exists
pending.push(cached.promise)
} else {
let geometryPromise
if (primitive.extensions && primitive.extensions[EXTENSIONS.KHR_DRACO_MESH_COMPRESSION]) {
// Use DRACO geometry if available
geometryPromise = createDracoPrimitive(primitive)
} else {
// Otherwise create a new geometry
geometryPromise = addPrimitiveAttributes(new THREE.BufferGeometry(), primitive, parser)
} // Cache this geometry
cache[cacheKey] = {
primitive: primitive,
promise: geometryPromise
}
pending.push(geometryPromise)
}
}
return Promise.all(pending)
}
/**
* Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#meshes
* @param {number} meshIndex
* @return {Promise<Group|Mesh|SkinnedMesh>}
*/
loadMesh(meshIndex) {
const parser = this
const json = this.json
const extensions = this.extensions
const meshDef = json.meshes[meshIndex]
const primitives = meshDef.primitives
const pending = []
for (let i = 0, il = primitives.length; i < il; i++) {
const material = primitives[i].material === undefined ? createDefaultMaterial(this.cache) : this.getDependency('material', primitives[i].material)
pending.push(material)
}
pending.push(parser.loadGeometries(primitives))
return Promise.all(pending).then(function (results) {
const materials = results.slice(0, results.length - 1)
const geometries = results[results.length - 1]
const meshes = []
for (let i = 0, il = geometries.length; i < il; i++) {
const geometry = geometries[i]
const primitive = primitives[i] // 1. create THREE.Mesh
let mesh
const material = materials[i]
if (primitive.mode === WEBGL_CONSTANTS.TRIANGLES || primitive.mode === WEBGL_CONSTANTS.TRIANGLE_STRIP || primitive.mode === WEBGL_CONSTANTS.TRIANGLE_FAN || primitive.mode === undefined) {
// .isSkinnedMesh isn't in glTF spec. See ._markDefs()
mesh = meshDef.isSkinnedMesh === true ? new THREE.SkinnedMesh(geometry, material) : new THREE.Mesh(geometry, material)
if (mesh.isSkinnedMesh === true && !mesh.geometry.attributes.skinWeight.normalized) {
// we normalize floating point skin weight array to fix malformed assets (see #15319)
// it's important to skip this for non-float32 data since normalizeSkinWeights assumes non-normalized inputs
mesh.normalizeSkinWeights()
}
if (primitive.mode === WEBGL_CONSTANTS.TRIANGLE_STRIP) {
mesh.geometry = toTrianglesDrawMode(mesh.geometry, THREE.TriangleStripDrawMode)
} else if (primitive.mode === WEBGL_CONSTANTS.TRIANGLE_FAN) {
mesh.geometry = toTrianglesDrawMode(mesh.geometry, THREE.TriangleFanDrawMode)
}
} else if (primitive.mode === WEBGL_CONSTANTS.LINES) {
mesh = new THREE.LineSegments(geometry, material)
} else if (primitive.mode === WEBGL_CONSTANTS.LINE_STRIP) {
mesh = new THREE.Line(geometry, material)
} else if (primitive.mode === WEBGL_CONSTANTS.LINE_LOOP) {
mesh = new THREE.LineLoop(geometry, material)
} else if (primitive.mode === WEBGL_CONSTANTS.POINTS) {
mesh = new THREE.Points(geometry, material)
} else {
throw new Error('THREE.GLTFLoader: Primitive mode unsupported: ' + primitive.mode)
}
if (Object.keys(mesh.geometry.morphAttributes).length > 0) {
updateMorphTargets(mesh, meshDef)
}
mesh.name = parser.createUniqueName(meshDef.name || 'mesh_' + meshIndex)
assignExtrasToUserData(mesh, meshDef)
if (primitive.extensions) addUnknownExtensionsToUserData(extensions, mesh, primitive)
parser.assignFinalMaterial(mesh)
meshes.push(mesh)
}
for (let i = 0, il = meshes.length; i < il; i++) {
parser.associations.set(meshes[i], {
meshes: meshIndex,
primitives: i
})
}
if (meshes.length === 1) {
return meshes[0]
}
const group = new THREE.Group()
parser.associations.set(group, {
meshes: meshIndex
})
for (let i = 0, il = meshes.length; i < il; i++) {
group.add(meshes[i])
}
return group
})
}
/**
* Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#cameras
* @param {number} cameraIndex
* @return {Promise<THREE.Camera>}
*/
loadCamera(cameraIndex) {
let camera
const cameraDef = this.json.cameras[cameraIndex]
const params = cameraDef[cameraDef.type]
if (!params) {
console.warn('THREE.GLTFLoader: Missing camera parameters.')
return
}
if (cameraDef.type === 'perspective') {
camera = new THREE.PerspectiveCamera(THREE.MathUtils.radToDeg(params.yfov), params.aspectRatio || 1, params.znear || 1, params.zfar || 2e6)
} else if (cameraDef.type === 'orthographic') {
camera = new THREE.OrthographicCamera(-params.xmag, params.xmag, params.ymag, -params.ymag, params.znear, params.zfar)
}
if (cameraDef.name) camera.name = this.createUniqueName(cameraDef.name)
assignExtrasToUserData(camera, cameraDef)
return Promise.resolve(camera)
}
/**
* Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#skins
* @param {number} skinIndex
* @return {Promise<Object>}
*/
loadSkin(skinIndex) {
const skinDef = this.json.skins[skinIndex]
const skinEntry = {
joints: skinDef.joints
}
if (skinDef.inverseBindMatrices === undefined) {
return Promise.resolve(skinEntry)
}
return this.getDependency('accessor', skinDef.inverseBindMatrices).then(function (accessor) {
skinEntry.inverseBindMatrices = accessor
return skinEntry
})
}
/**
* Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#animations
* @param {number} animationIndex
* @return {Promise<AnimationClip>}
*/
loadAnimation(animationIndex) {
const json = this.json
const animationDef = json.animations[animationIndex]
const pendingNodes = []
const pendingInputAccessors = []
const pendingOutputAccessors = []
const pendingSamplers = []
const pendingTargets = []
for (let i = 0, il = animationDef.channels.length; i < il; i++) {
const channel = animationDef.channels[i]
const sampler = animationDef.samplers[channel.sampler]
const target = channel.target
const name = target.node !== undefined ? target.node : target.id // NOTE: target.id is deprecated.
const input = animationDef.parameters !== undefined ? animationDef.parameters[sampler.input] : sampler.input
const output = animationDef.parameters !== undefined ? animationDef.parameters[sampler.output] : sampler.output
pendingNodes.push(this.getDependency('node', name))
pendingInputAccessors.push(this.getDependency('accessor', input))
pendingOutputAccessors.push(this.getDependency('accessor', output))
pendingSamplers.push(sampler)
pendingTargets.push(target)
}
return Promise.all([Promise.all(pendingNodes), Promise.all(pendingInputAccessors), Promise.all(pendingOutputAccessors), Promise.all(pendingSamplers), Promise.all(pendingTargets)]).then(
function (dependencies) {
const nodes = dependencies[0]
const inputAccessors = dependencies[1]
const outputAccessors = dependencies[2]
const samplers = dependencies[3]
const targets = dependencies[4]
const tracks = []
for (let i = 0, il = nodes.length; i < il; i++) {
const node = nodes[i]
const inputAccessor = inputAccessors[i]
const outputAccessor = outputAccessors[i]
const sampler = samplers[i]
const target = targets[i]
if (node === undefined) continue
node.updateMatrix()
node.matrixAutoUpdate = true
let TypedKeyframeTrack
switch (PATH_PROPERTIES[target.path]) {
case PATH_PROPERTIES.weights:
TypedKeyframeTrack = THREE.NumberKeyframeTrack
break
case PATH_PROPERTIES.rotation:
TypedKeyframeTrack = THREE.QuaternionKeyframeTrack
break
case PATH_PROPERTIES.position:
case PATH_PROPERTIES.scale:
default:
TypedKeyframeTrack = THREE.VectorKeyframeTrack
break
}
const targetName = node.name ? node.name : node.uuid
const interpolation = sampler.interpolation !== undefined ? INTERPOLATION[sampler.interpolation] : THREE.InterpolateLinear
const targetNames = []
if (PATH_PROPERTIES[target.path] === PATH_PROPERTIES.weights) {
node.traverse(function (object) {
if (object.morphTargetInfluences) {
targetNames.push(object.name ? object.name : object.uuid)
}
})
} else {
targetNames.push(targetName)
}
let outputArray = outputAccessor.array
if (outputAccessor.normalized) {
const scale = getNormalizedComponentScale(outputArray.constructor)
const scaled = new Float32Array(outputArray.length)
for (let j = 0, jl = outputArray.length; j < jl; j++) {
scaled[j] = outputArray[j] * scale
}
outputArray = scaled
}
for (let j = 0, jl = targetNames.length; j < jl; j++) {
const track = new TypedKeyframeTrack(targetNames[j] + '.' + PATH_PROPERTIES[target.path], inputAccessor.array, outputArray, interpolation) // Override interpolation with custom factory method.
if (sampler.interpolation === 'CUBICSPLINE') {
track.createInterpolant = function InterpolantFactoryMethodGLTFCubicSpline(result) {
// A CUBICSPLINE keyframe in glTF has three output values for each input value,
// representing inTangent, splineVertex, and outTangent. As a result, track.getValueSize()
// must be divided by three to get the interpolant's sampleSize argument.
const interpolantType = this instanceof THREE.QuaternionKeyframeTrack ? GLTFCubicSplineQuaternionInterpolant : GLTFCubicSplineInterpolant
return new interpolantType(this.times, this.values, this.getValueSize() / 3, result)
} // Mark as CUBICSPLINE. `track.getInterpolation()` doesn't support custom interpolants.
track.createInterpolant.isInterpolantFactoryMethodGLTFCubicSpline = true
}
tracks.push(track)
}
}
const name = animationDef.name ? animationDef.name : 'animation_' + animationIndex
return new THREE.AnimationClip(name, undefined, tracks)
}
)
}
createNodeMesh(nodeIndex) {
const json = this.json
const parser = this
const nodeDef = json.nodes[nodeIndex]
if (nodeDef.mesh === undefined) return null
return parser.getDependency('mesh', nodeDef.mesh).then(function (mesh) {
const node = parser._getNodeRef(parser.meshCache, nodeDef.mesh, mesh) // if weights are provided on the node, override weights on the mesh.
if (nodeDef.weights !== undefined) {
node.traverse(function (o) {
if (!o.isMesh) return
for (let i = 0, il = nodeDef.weights.length; i < il; i++) {
o.morphTargetInfluences[i] = nodeDef.weights[i]
}
})
}
return node
})
}
/**
* Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#nodes-and-hierarchy
* @param {number} nodeIndex
* @return {Promise<Object3D>}
*/
loadNode(nodeIndex) {
const json = this.json
const extensions = this.extensions
const parser = this
const nodeDef = json.nodes[nodeIndex] // reserve node's name before its dependencies, so the root has the intended name.
const nodeName = nodeDef.name ? parser.createUniqueName(nodeDef.name) : ''
return (function () {
const pending = []
const meshPromise = parser._invokeOne(function (ext) {
return ext.createNodeMesh && ext.createNodeMesh(nodeIndex)
})
if (meshPromise) {
pending.push(meshPromise)
}
if (nodeDef.camera !== undefined) {
pending.push(
parser.getDependency('camera', nodeDef.camera).then(function (camera) {
return parser._getNodeRef(parser.cameraCache, nodeDef.camera, camera)
})
)
}
parser
._invokeAll(function (ext) {
return ext.createNodeAttachment && ext.createNodeAttachment(nodeIndex)
})
.forEach(function (promise) {
pending.push(promise)
})
return Promise.all(pending)
})().then(function (objects) {
let node // .isBone isn't in glTF spec. See ._markDefs
if (nodeDef.isBone === true) {
node = new THREE.Bone()
} else if (objects.length > 1) {
node = new THREE.Group()
} else if (objects.length === 1) {
node = objects[0]
} else {
node = new THREE.Object3D()
}
if (node !== objects[0]) {
for (let i = 0, il = objects.length; i < il; i++) {
node.add(objects[i])
}
}
if (nodeDef.name) {
node.userData.name = nodeDef.name
node.name = nodeName
}
assignExtrasToUserData(node, nodeDef)
if (nodeDef.extensions) addUnknownExtensionsToUserData(extensions, node, nodeDef)
if (nodeDef.matrix !== undefined) {
const matrix = new THREE.Matrix4()
matrix.fromArray(nodeDef.matrix)
node.applyMatrix4(matrix)
} else {
if (nodeDef.translation !== undefined) {
node.position.fromArray(nodeDef.translation)
}
if (nodeDef.rotation !== undefined) {
node.quaternion.fromArray(nodeDef.rotation)
}
if (nodeDef.scale !== undefined) {
node.scale.fromArray(nodeDef.scale)
}
}
if (!parser.associations.has(node)) {
parser.associations.set(node, {})
}
parser.associations.get(node).nodes = nodeIndex
return node
})
}
/**
* Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#scenes
* @param {number} sceneIndex
* @return {Promise<Group>}
*/
loadScene(sceneIndex) {
const json = this.json
const extensions = this.extensions
const sceneDef = this.json.scenes[sceneIndex]
const parser = this // THREE.Loader returns THREE.Group, not Scene.
// See: https://github.com/mrdoob/three.js/issues/18342#issuecomment-578981172
const scene = new THREE.Group()
if (sceneDef.name) scene.name = parser.createUniqueName(sceneDef.name)
assignExtrasToUserData(scene, sceneDef)
if (sceneDef.extensions) addUnknownExtensionsToUserData(extensions, scene, sceneDef)
const nodeIds = sceneDef.nodes || []
const pending = []
for (let i = 0, il = nodeIds.length; i < il; i++) {
pending.push(buildNodeHierarchy(nodeIds[i], scene, json, parser))
}
return Promise.all(pending).then(function () {
// Removes dangling associations, associations that reference a node that
// didn't make it into the scene.
const reduceAssociations = (node) => {
const reducedAssociations = new Map()
for (const [key, value] of parser.associations) {
if (key instanceof THREE.Material || key instanceof THREE.Texture) {
reducedAssociations.set(key, value)
}
}
node.traverse((node) => {
const mappings = parser.associations.get(node)
if (mappings != null) {
reducedAssociations.set(node, mappings)
}
})
return reducedAssociations
}
parser.associations = reduceAssociations(scene)
return scene
})
}
}
function buildNodeHierarchy(nodeId, parentObject, json, parser) {
const nodeDef = json.nodes[nodeId]
return parser
.getDependency('node', nodeId)
.then(function (node) {
if (nodeDef.skin === undefined) return node // build skeleton here as well
let skinEntry
return parser
.getDependency('skin', nodeDef.skin)
.then(function (skin) {
skinEntry = skin
const pendingJoints = []
for (let i = 0, il = skinEntry.joints.length; i < il; i++) {
pendingJoints.push(parser.getDependency('node', skinEntry.joints[i]))
}
return Promise.all(pendingJoints)
})
.then(function (jointNodes) {
node.traverse(function (mesh) {
if (!mesh.isMesh) return
const bones = []
const boneInverses = []
for (let j = 0, jl = jointNodes.length; j < jl; j++) {
const jointNode = jointNodes[j]
if (jointNode) {
bones.push(jointNode)
const mat = new THREE.Matrix4()
if (skinEntry.inverseBindMatrices !== undefined) {
mat.fromArray(skinEntry.inverseBindMatrices.array, j * 16)
}
boneInverses.push(mat)
} else {
console.warn('THREE.GLTFLoader: Joint "%s" could not be found.', skinEntry.joints[j])
}
}
mesh.bind(new THREE.Skeleton(bones, boneInverses), mesh.matrixWorld)
})
return node
})
})
.then(function (node) {
// build node hierachy
parentObject.add(node)
const pending = []
if (nodeDef.children) {
const children = nodeDef.children
for (let i = 0, il = children.length; i < il; i++) {
const child = children[i]
pending.push(buildNodeHierarchy(child, node, json, parser))
}
}
return Promise.all(pending)
})
}
/**
* @param {BufferGeometry} geometry
* @param {GLTF.Primitive} primitiveDef
* @param {GLTFParser} parser
*/
function computeBounds(geometry, primitiveDef, parser) {
const attributes = primitiveDef.attributes
const box = new THREE.Box3()
if (attributes.POSITION !== undefined) {
const accessor = parser.json.accessors[attributes.POSITION]
const min = accessor.min
const max = accessor.max // glTF requires 'min' and 'max', but VRM (which extends glTF) currently ignores that requirement.
if (min !== undefined && max !== undefined) {
box.set(new THREE.Vector3(min[0], min[1], min[2]), new THREE.Vector3(max[0], max[1], max[2]))
if (accessor.normalized) {
const boxScale = getNormalizedComponentScale(WEBGL_COMPONENT_TYPES[accessor.componentType])
box.min.multiplyScalar(boxScale)
box.max.multiplyScalar(boxScale)
}
} else {
console.warn('THREE.GLTFLoader: Missing min/max properties for accessor POSITION.')
return
}
} else {
return
}
const targets = primitiveDef.targets
if (targets !== undefined) {
const maxDisplacement = new THREE.Vector3()
const vector = new THREE.Vector3()
for (let i = 0, il = targets.length; i < il; i++) {
const target = targets[i]
if (target.POSITION !== undefined) {
const accessor = parser.json.accessors[target.POSITION]
const min = accessor.min
const max = accessor.max // glTF requires 'min' and 'max', but VRM (which extends glTF) currently ignores that requirement.
if (min !== undefined && max !== undefined) {
// we need to get max of absolute components because target weight is [-1,1]
vector.setX(Math.max(Math.abs(min[0]), Math.abs(max[0])))
vector.setY(Math.max(Math.abs(min[1]), Math.abs(max[1])))
vector.setZ(Math.max(Math.abs(min[2]), Math.abs(max[2])))
if (accessor.normalized) {
const boxScale = getNormalizedComponentScale(WEBGL_COMPONENT_TYPES[accessor.componentType])
vector.multiplyScalar(boxScale)
} // Note: this assumes that the sum of all weights is at most 1. This isn't quite correct - it's more conservative
// to assume that each target can have a max weight of 1. However, for some use cases - notably, when morph targets
// are used to implement key-frame animations and as such only two are active at a time - this results in very large
// boxes. So for now we make a box that's sometimes a touch too small but is hopefully mostly of reasonable size.
maxDisplacement.max(vector)
} else {
console.warn('THREE.GLTFLoader: Missing min/max properties for accessor POSITION.')
}
}
} // As per comment above this box isn't conservative, but has a reasonable size for a very large number of morph targets.
box.expandByVector(maxDisplacement)
}
geometry.boundingBox = box
const sphere = new THREE.Sphere()
box.getCenter(sphere.center)
sphere.radius = box.min.distanceTo(box.max) / 2
geometry.boundingSphere = sphere
}
/**
* @param {BufferGeometry} geometry
* @param {GLTF.Primitive} primitiveDef
* @param {GLTFParser} parser
* @return {Promise<BufferGeometry>}
*/
function addPrimitiveAttributes(geometry, primitiveDef, parser) {
const attributes = primitiveDef.attributes
const pending = []
function assignAttributeAccessor(accessorIndex, attributeName) {
return parser.getDependency('accessor', accessorIndex).then(function (accessor) {
geometry.setAttribute(attributeName, accessor)
})
}
for (const gltfAttributeName in attributes) {
const threeAttributeName = ATTRIBUTES[gltfAttributeName] || gltfAttributeName.toLowerCase() // Skip attributes already provided by e.g. Draco extension.
if (threeAttributeName in geometry.attributes) continue
pending.push(assignAttributeAccessor(attributes[gltfAttributeName], threeAttributeName))
}
if (primitiveDef.indices !== undefined && !geometry.index) {
const accessor = parser.getDependency('accessor', primitiveDef.indices).then(function (accessor) {
geometry.setIndex(accessor)
})
pending.push(accessor)
}
assignExtrasToUserData(geometry, primitiveDef)
computeBounds(geometry, primitiveDef, parser)
return Promise.all(pending).then(function () {
return primitiveDef.targets !== undefined ? addMorphTargets(geometry, primitiveDef.targets, parser) : geometry
})
}
/**
* @param {BufferGeometry} geometry
* @param {Number} drawMode
* @return {BufferGeometry}
*/
function toTrianglesDrawMode(geometry, drawMode) {
let index = geometry.getIndex() // generate index if not present
if (index === null) {
const indices = []
const position = geometry.getAttribute('position')
if (position !== undefined) {
for (let i = 0; i < position.count; i++) {
indices.push(i)
}
geometry.setIndex(indices)
index = geometry.getIndex()
} else {
console.error('THREE.GLTFLoader.toTrianglesDrawMode(): Undefined position attribute. Processing not possible.')
return geometry
}
} //
const numberOfTriangles = index.count - 2
const newIndices = []
if (drawMode === THREE.TriangleFanDrawMode) {
// gl.TRIANGLE_FAN
for (let i = 1; i <= numberOfTriangles; i++) {
newIndices.push(index.getX(0))
newIndices.push(index.getX(i))
newIndices.push(index.getX(i + 1))
}
} else {
// gl.TRIANGLE_STRIP
for (let i = 0; i < numberOfTriangles; i++) {
if (i % 2 === 0) {
newIndices.push(index.getX(i))
newIndices.push(index.getX(i + 1))
newIndices.push(index.getX(i + 2))
} else {
newIndices.push(index.getX(i + 2))
newIndices.push(index.getX(i + 1))
newIndices.push(index.getX(i))
}
}
}
if (newIndices.length / 3 !== numberOfTriangles) {
console.error('THREE.GLTFLoader.toTrianglesDrawMode(): Unable to generate correct amount of triangles.')
} // build final geometry
const newGeometry = geometry.clone()
newGeometry.setIndex(newIndices)
return newGeometry
}
THREE.GLTFLoader = GLTFLoader
})()