Team:Vilnius-Lithuania/secret-place/three-dimensional-models
ns[ 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 );
}
}
/* GLTFREGISTRY */ window.GLTFLoader = GLTFLoader; 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_PBR_SPECULAR_GLOSSINESS: 'KHR_materials_pbrSpecularGlossiness', KHR_MATERIALS_TRANSMISSION: 'KHR_materials_transmission', KHR_MATERIALS_UNLIT: 'KHR_materials_unlit', 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;
// 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 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 DirectionalLight( color ); lightNode.target.position.set( 0, 0, - 1 ); lightNode.add( lightNode.target ); break;
case 'point': lightNode = new PointLight( color ); lightNode.distance = range; break;
case 'spot': lightNode = new 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 MeshBasicMaterial;
}
extendParams( materialParams, materialDef, parser ) {
const pending = [];
materialParams.color = new 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 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;
// https://github.com/mrdoob/three.js/issues/11438#issuecomment-507003995 materialParams.clearcoatNormalScale = new Vector2( scale, - scale );
}
}
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 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 );
}
}
/**
* BasisU 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 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: 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 = 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 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 );
} );
} );
}
}
/**
* 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 ) {
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/master/extensions/2.0/Khronos/KHR_materials_pbrSpecularGlossiness */
/**
* A sub class of StandardMaterial with some of the functionality * changed via the `onBeforeCompile` callback * @pailhead */
class GLTFMeshStandardSGMaterial extends 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.specularRoughness = max( 1.0 - glossinessFactor, 0.0525 ); // 0.0525 corresponds to the base mip of a 256 cubemap.', 'material.specularRoughness += geometryRoughness;', 'material.specularRoughness = min( material.specularRoughness, 1.0 );', 'material.specularColor = specularFactor;', ].join( '\n' );
const uniforms = { specular: { value: new 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 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 Color( 0.0, 0.0, 0.0 ); materialParams.glossiness = pbrSpecularGlossiness.glossinessFactor !== undefined ? pbrSpecularGlossiness.glossinessFactor : 1.0; materialParams.specular = new 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 = 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;
}
}
/**
* 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 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;
};
/*********************************/ /********** 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: NearestFilter, 9729: LinearFilter, 9984: NearestMipmapNearestFilter, 9985: LinearMipmapNearestFilter, 9986: NearestMipmapLinearFilter, 9987: LinearMipmapLinearFilter };
const WEBGL_WRAPPINGS = { 33071: ClampToEdgeWrapping, 33648: MirroredRepeatWrapping, 10497: 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: InterpolateLinear, STEP: InterpolateDiscrete };
const ALPHA_MODES = { OPAQUE: 'OPAQUE', MASK: 'MASK', BLEND: 'BLEND' };
/* UTILITY FUNCTIONS */
function resolveURL( url, path ) {
// Invalid URL if ( typeof url !== 'string' || url === ) return ;
// Host Relative URL if ( /^https?:\/\//i.test( path ) && /^\//.test( url ) ) {
path = path.replace( /(^https?:\/\/[^\/]+).*/i, '$1' );
}
// Absolute URL http://,https://,// if ( /^(https?:)?\/\//i.test( url ) ) return url;
// Data URI if ( /^data:.*,.*$/i.test( url ) ) return url;
// Blob URL if ( /^blob:.*$/i.test( url ) ) return url;
// Relative URL return path + url;
}
/**
* 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 MeshStandardMaterial( { color: 0xFFFFFF, emissive: 0x000000, metalness: 1, roughness: 1, transparent: false, depthTest: true, side: 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();
// BufferGeometry caching this.primitiveCache = {};
// 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 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/.test( navigator.userAgent ) === false ) {
this.textureLoader = new ImageBitmapLoader( this.options.manager );
} else {
this.textureLoader = new TextureLoader( this.options.manager );
}
this.textureLoader.setCrossOrigin( this.options.crossOrigin ); this.textureLoader.setRequestHeader( this.options.requestHeader );
this.fileLoader = new 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 Bone or an // 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 SkinnedMesh or Mesh. Use the node's mesh reference // to mark 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 / Object3D resources. These resources * can be reused, or "instantiated", at multiple nodes in the scene * hierarchy. 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();
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( 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 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 InterleavedBuffer( array, byteStride / elementBytes );
parser.cache.add( ibCacheKey, ib );
}
bufferAttribute = new 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 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 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 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; let hasAlpha = true;
const isJPEG = sourceURI.search( /\.jpe?g($|\?)/i ) > 0 || sourceURI.search( /^data\:image\/jpeg/ ) === 0;
if ( source.mimeType === 'image/jpeg' || isJPEG ) hasAlpha = false;
if ( source.bufferView !== undefined ) {
// Load binary image data from bufferView, if provided.
sourceURI = parser.getDependency( 'bufferView', source.bufferView ).then( function ( bufferView ) {
if ( source.mimeType === 'image/png' ) {
// Inspect the PNG 'IHDR' chunk to determine whether the image could have an // alpha channel. This check is conservative — the image could have an alpha // channel with all values == 1, and the indexed type (colorType == 3) only // sometimes contains alpha. // // https://en.wikipedia.org/wiki/Portable_Network_Graphics#File_header const colorType = new DataView( bufferView, 25, 1 ).getUint8( 0, false ); hasAlpha = colorType === 6 || colorType === 4 || colorType === 3;
}
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 Texture( imageBitmap ); texture.needsUpdate = true;
resolve( texture );
};
}
loader.load( resolveURL( sourceURI, options.path ), onLoad, undefined, reject );
} );
} ).then( function ( texture ) {
// Clean up resources and configure Texture.
if ( isObjectURL === true ) {
URL.revokeObjectURL( sourceURI );
}
texture.flipY = false;
if ( textureDef.name ) texture.name = textureDef.name;
// When there is definitely no alpha channel in the texture, set RGBFormat to save space. if ( ! hasAlpha ) texture.format = RGBFormat;
const samplers = json.samplers || {}; const sampler = samplers[ textureDef.sampler ] || {};
texture.magFilter = WEBGL_FILTERS[ sampler.magFilter ] || LinearFilter; texture.minFilter = WEBGL_FILTERS[ sampler.minFilter ] || LinearMipmapLinearFilter; texture.wrapS = WEBGL_WRAPPINGS[ sampler.wrapS ] || RepeatWrapping; texture.wrapT = WEBGL_WRAPPINGS[ sampler.wrapT ] || RepeatWrapping;
parser.associations.set( texture, { type: 'textures', index: 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} */ 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;
} );
}
/** * Assigns final material to a Mesh, Line, or 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 Mesh, Line, or Points instance. */ assignFinalMaterial( mesh ) {
const geometry = mesh.geometry; let material = mesh.material;
const useVertexTangents = geometry.attributes.tangent !== undefined; const useVertexColors = geometry.attributes.color !== undefined; const useFlatShading = geometry.attributes.normal === undefined; const useMorphTargets = Object.keys( geometry.morphAttributes ).length > 0; const useMorphNormals = useMorphTargets && geometry.morphAttributes.normal !== undefined;
if ( mesh.isPoints ) {
const cacheKey = 'PointsMaterial:' + material.uuid;
let pointsMaterial = this.cache.get( cacheKey );
if ( ! pointsMaterial ) {
pointsMaterial = new PointsMaterial(); 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 LineBasicMaterial(); 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 ( useVertexTangents || useVertexColors || useFlatShading || useMorphTargets ) {
let cacheKey = 'ClonedMaterial:' + material.uuid + ':';
if ( material.isGLTFSpecularGlossinessMaterial ) cacheKey += 'specular-glossiness:'; if ( useVertexTangents ) cacheKey += 'vertex-tangents:'; if ( useVertexColors ) cacheKey += 'vertex-colors:'; if ( useFlatShading ) cacheKey += 'flat-shading:'; if ( useMorphTargets ) cacheKey += 'morph-targets:'; if ( useMorphNormals ) cacheKey += 'morph-normals:';
let cachedMaterial = this.cache.get( cacheKey );
if ( ! cachedMaterial ) {
cachedMaterial = material.clone();
if ( useVertexColors ) cachedMaterial.vertexColors = true; if ( useFlatShading ) cachedMaterial.flatShading = true; if ( useMorphTargets ) cachedMaterial.morphTargets = true; if ( useMorphNormals ) cachedMaterial.morphNormals = true;
if ( useVertexTangents ) {
cachedMaterial.vertexTangents = true;
// 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( /* materialIndex */ ) {
return 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 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 = 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.transparent = false;
if ( alphaMode === ALPHA_MODES.MASK ) {
materialParams.alphaTest = materialDef.alphaCutoff !== undefined ? materialDef.alphaCutoff : 0.5;
}
}
if ( materialDef.normalTexture !== undefined && materialType !== MeshBasicMaterial ) {
pending.push( parser.assignTexture( materialParams, 'normalMap', materialDef.normalTexture ) );
// https://github.com/mrdoob/three.js/issues/11438#issuecomment-507003995 materialParams.normalScale = new Vector2( 1, - 1 );
if ( materialDef.normalTexture.scale !== undefined ) {
materialParams.normalScale.set( materialDef.normalTexture.scale, - materialDef.normalTexture.scale );
}
}
if ( materialDef.occlusionTexture !== undefined && materialType !== MeshBasicMaterial ) {
pending.push( parser.assignTexture( materialParams, 'aoMap', materialDef.occlusionTexture ) );
if ( materialDef.occlusionTexture.strength !== undefined ) {
materialParams.aoMapIntensity = materialDef.occlusionTexture.strength;
}
}
if ( materialDef.emissiveFactor !== undefined && materialType !== MeshBasicMaterial ) {
materialParams.emissive = new Color().fromArray( materialDef.emissiveFactor );
}
if ( materialDef.emissiveTexture !== undefined && materialType !== 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 = sRGBEncoding; if ( material.emissiveMap ) material.emissiveMap.encoding = sRGBEncoding;
assignExtrasToUserData( material, materialDef );
parser.associations.set( material, { type: 'materials', index: materialIndex } );
if ( materialDef.extensions ) addUnknownExtensionsToUserData( extensions, material, materialDef );
return material;
} );
}
/** When Object3D instances are targeted by animation, they need unique names. */ createUniqueName( originalName ) {
const sanitizedName = 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 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 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 SkinnedMesh( geometry, material ) : new 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, TriangleStripDrawMode );
} else if ( primitive.mode === WEBGL_CONSTANTS.TRIANGLE_FAN ) {
mesh.geometry = toTrianglesDrawMode( mesh.geometry, TriangleFanDrawMode );
}
} else if ( primitive.mode === WEBGL_CONSTANTS.LINES ) {
mesh = new LineSegments( geometry, material );
} else if ( primitive.mode === WEBGL_CONSTANTS.LINE_STRIP ) {
mesh = new Line( geometry, material );
} else if ( primitive.mode === WEBGL_CONSTANTS.LINE_LOOP ) {
mesh = new LineLoop( geometry, material );
} else if ( primitive.mode === WEBGL_CONSTANTS.POINTS ) {
mesh = new 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 );
}
if ( meshes.length === 1 ) {
return meshes[ 0 ];
}
const group = new Group();
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 PerspectiveCamera( MathUtils.radToDeg( params.yfov ), params.aspectRatio || 1, params.znear || 1, params.zfar || 2e6 );
} else if ( cameraDef.type === 'orthographic' ) {
camera = new 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 = NumberKeyframeTrack; break;
case PATH_PROPERTIES.rotation:
TypedKeyframeTrack = QuaternionKeyframeTrack; break;
case PATH_PROPERTIES.position: case PATH_PROPERTIES.scale: default:
TypedKeyframeTrack = VectorKeyframeTrack; break;
}
const targetName = node.name ? node.name : node.uuid;
const interpolation = sampler.interpolation !== undefined ? INTERPOLATION[ sampler.interpolation ] : InterpolateLinear;
const targetNames = [];
if ( PATH_PROPERTIES[ target.path ] === PATH_PROPERTIES.weights ) {
// Node may be a Group (glTF mesh with several primitives) or a Mesh. node.traverse( function ( object ) {
if ( object.isMesh === true && 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.
return new GLTFCubicSplineInterpolant( 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 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 Bone();
} else if ( objects.length > 1 ) {
node = new Group();
} else if ( objects.length === 1 ) {
node = objects[ 0 ];
} else {
node = new 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 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 );
}
}
parser.associations.set( node, { type: 'nodes', index: 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;
// Loader returns Group, not Scene. // See: https://github.com/mrdoob/three.js/issues/18342#issuecomment-578981172 const scene = new 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( buildNodeHierachy( nodeIds[ i ], scene, json, parser ) );
}
return Promise.all( pending ).then( function () {
return scene;
} );
}
}
function buildNodeHierachy( 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 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 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( buildNodeHierachy( 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 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 Vector3( min[ 0 ], min[ 1 ], min[ 2 ] ), new 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 Vector3(); const vector = new 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 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 === 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;
}
</script> <script type="module">
console.log(THREE) var scene = new THREE.Scene();
var root = new THREE.Group();
var camera = new THREE.PerspectiveCamera( 75, window.innerWidth / window.innerHeight, 0.1, 1000 ); var renderer = new THREE.WebGLRenderer({ antialias: true, preserveDrawingBuffer: true, alpha: true, });
var clock = new THREE.Clock();
var container = document.getElementById("model-view");
const light1 = new THREE.DirectionalLight(0xffffff, 2.5);
light1.position.set(0, 1, 3); scene.add(light1);
const light2 = new THREE.AmbientLight(0xffffff, 0.7); light1.position.set(0, 1, 3); scene.add(light2);
const light3 = new THREE.HemisphereLight(); scene.add(light3);
renderer.setClearColor(0xcccccc, 0);
camera.position.z = 2; camera.position.y = 0.5; scene.position.y = -0.5; scene.add(camera);
renderer.gammaOutput = true; renderer.gammaFactor = 2.2;
renderer.setPixelRatio(window.devicePixelRatio); renderer.outputEncoding = THREE.sRGBEncoding; renderer.toneMappingExposure = 1; renderer.setSize( container.offsetWidth, container.offsetHeight ); renderer.physicallyCorrectLights = true; container.appendChild(renderer.domElement);
window.addEventListener("resize", function () {}, false);
scene.add(root);
const loader = new GLTFLoader();
let mixer; const actions = [];
function animate () { actions.forEach((action) => { action.play(); }); renderer.render(scene, camera); requestAnimationFrame(animate); };
loader.load("./bioit_uncompressed.glb.png", function(loadedModel) { const meshItem = loadedModel.scene;
meshItem.scale.set(
0.1,
0.1,
0.1
);
root.add(meshItem);
animate(); });
</script>
</html>