three#TriangleStripDrawMode JavaScript Examples
The following examples show how to use
three#TriangleStripDrawMode.
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Example #1
| Source File: GLTFLoader.js From canvas with Apache License 2.0 | 4 votes |
|
GLTFLoader = ( function () {
function GLTFLoader( manager ) {
Loader.call( this, manager );
this.dracoLoader = null;
this.ddsLoader = null;
}
GLTFLoader.prototype = Object.assign( Object.create( Loader.prototype ), {
constructor: GLTFLoader,
load: function ( url, onLoad, onProgress, onError ) {
var scope = this;
var resourcePath;
if ( this.resourcePath !== '' ) {
resourcePath = this.resourcePath;
} else if ( this.path !== '' ) {
resourcePath = this.path;
} else {
resourcePath = 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.
scope.manager.itemStart( url );
var _onError = function ( e ) {
if ( onError ) {
onError( e );
} else {
console.error( e );
}
scope.manager.itemError( url );
scope.manager.itemEnd( url );
};
var loader = new FileLoader( scope.manager );
loader.setPath( this.path );
loader.setResponseType( 'arraybuffer' );
if ( scope.crossOrigin === 'use-credentials' ) {
loader.setWithCredentials( true );
}
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: function ( dracoLoader ) {
this.dracoLoader = dracoLoader;
return this;
},
setDDSLoader: function ( ddsLoader ) {
this.ddsLoader = ddsLoader;
return this;
},
parse: function ( data, path, onLoad, onError ) {
var content;
var extensions = {};
if ( typeof data === 'string' ) {
content = data;
} else {
var magic = 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 = LoaderUtils.decodeText( new Uint8Array( data ) );
}
}
var 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;
}
if ( json.extensionsUsed ) {
for ( var i = 0; i < json.extensionsUsed.length; ++ i ) {
var extensionName = json.extensionsUsed[ i ];
var extensionsRequired = json.extensionsRequired || [];
switch ( extensionName ) {
case EXTENSIONS.KHR_LIGHTS_PUNCTUAL:
extensions[ extensionName ] = new GLTFLightsExtension( json );
break;
case EXTENSIONS.KHR_MATERIALS_CLEARCOAT:
extensions[ extensionName ] = new GLTFMaterialsClearcoatExtension();
break;
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.MSFT_TEXTURE_DDS:
extensions[ extensionName ] = new GLTFTextureDDSExtension( this.ddsLoader );
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 ) {
console.warn( 'THREE.GLTFLoader: Unknown extension "' + extensionName + '".' );
}
}
}
}
var parser = new GLTFParser( json, extensions, {
path: path || this.resourcePath || '',
crossOrigin: this.crossOrigin,
manager: this.manager
} );
parser.parse( onLoad, onError );
}
} );
/* GLTFREGISTRY */
function GLTFRegistry() {
var 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 ***********/
/*********************************/
var 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_UNLIT: 'KHR_materials_unlit',
KHR_TEXTURE_TRANSFORM: 'KHR_texture_transform',
KHR_MESH_QUANTIZATION: 'KHR_mesh_quantization',
MSFT_TEXTURE_DDS: 'MSFT_texture_dds'
};
/**
* DDS Texture Extension
*
* Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Vendor/MSFT_texture_dds
*
*/
function GLTFTextureDDSExtension( ddsLoader ) {
if ( ! ddsLoader ) {
throw new Error( 'THREE.GLTFLoader: Attempting to load .dds texture without importing DDSLoader' );
}
this.name = EXTENSIONS.MSFT_TEXTURE_DDS;
this.ddsLoader = ddsLoader;
}
/**
* Punctual Lights Extension
*
* Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_lights_punctual
*/
function GLTFLightsExtension( json ) {
this.name = EXTENSIONS.KHR_LIGHTS_PUNCTUAL;
var extension = ( json.extensions && json.extensions[ EXTENSIONS.KHR_LIGHTS_PUNCTUAL ] ) || {};
this.lightDefs = extension.lights || [];
}
GLTFLightsExtension.prototype.loadLight = function ( lightIndex ) {
var lightDef = this.lightDefs[ lightIndex ];
var lightNode;
var color = new Color( 0xffffff );
if ( lightDef.color !== undefined ) color.fromArray( lightDef.color );
var 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 = lightDef.name || ( 'light_' + lightIndex );
return Promise.resolve( lightNode );
};
/**
* Unlit Materials Extension
*
* Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_unlit
*/
function GLTFMaterialsUnlitExtension() {
this.name = EXTENSIONS.KHR_MATERIALS_UNLIT;
}
GLTFMaterialsUnlitExtension.prototype.getMaterialType = function () {
return MeshBasicMaterial;
};
GLTFMaterialsUnlitExtension.prototype.extendParams = function ( materialParams, materialDef, parser ) {
var pending = [];
materialParams.color = new Color( 1.0, 1.0, 1.0 );
materialParams.opacity = 1.0;
var metallicRoughness = materialDef.pbrMetallicRoughness;
if ( metallicRoughness ) {
if ( Array.isArray( metallicRoughness.baseColorFactor ) ) {
var 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
*/
function GLTFMaterialsClearcoatExtension() {
this.name = EXTENSIONS.KHR_MATERIALS_CLEARCOAT;
}
GLTFMaterialsClearcoatExtension.prototype.getMaterialType = function () {
return MeshPhysicalMaterial;
};
GLTFMaterialsClearcoatExtension.prototype.extendParams = function ( materialParams, materialDef, parser ) {
var pending = [];
var 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 ) {
var scale = extension.clearcoatNormalTexture.scale;
materialParams.clearcoatNormalScale = new Vector2( scale, scale );
}
}
return Promise.all( pending );
};
/* BINARY EXTENSION */
var BINARY_EXTENSION_HEADER_MAGIC = 'glTF';
var BINARY_EXTENSION_HEADER_LENGTH = 12;
var BINARY_EXTENSION_CHUNK_TYPES = { JSON: 0x4E4F534A, BIN: 0x004E4942 };
function GLTFBinaryExtension( data ) {
this.name = EXTENSIONS.KHR_BINARY_GLTF;
this.content = null;
this.body = null;
var 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.' );
}
var chunkView = new DataView( data, BINARY_EXTENSION_HEADER_LENGTH );
var chunkIndex = 0;
while ( chunkIndex < chunkView.byteLength ) {
var chunkLength = chunkView.getUint32( chunkIndex, true );
chunkIndex += 4;
var chunkType = chunkView.getUint32( chunkIndex, true );
chunkIndex += 4;
if ( chunkType === BINARY_EXTENSION_CHUNK_TYPES.JSON ) {
var contentArray = new Uint8Array( data, BINARY_EXTENSION_HEADER_LENGTH + chunkIndex, chunkLength );
this.content = LoaderUtils.decodeText( contentArray );
} else if ( chunkType === BINARY_EXTENSION_CHUNK_TYPES.BIN ) {
var 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
*/
function GLTFDracoMeshCompressionExtension( 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();
}
GLTFDracoMeshCompressionExtension.prototype.decodePrimitive = function ( primitive, parser ) {
var json = this.json;
var dracoLoader = this.dracoLoader;
var bufferViewIndex = primitive.extensions[ this.name ].bufferView;
var gltfAttributeMap = primitive.extensions[ this.name ].attributes;
var threeAttributeMap = {};
var attributeNormalizedMap = {};
var attributeTypeMap = {};
for ( var attributeName in gltfAttributeMap ) {
var threeAttributeName = ATTRIBUTES[ attributeName ] || attributeName.toLowerCase();
threeAttributeMap[ threeAttributeName ] = gltfAttributeMap[ attributeName ];
}
for ( attributeName in primitive.attributes ) {
var threeAttributeName = ATTRIBUTES[ attributeName ] || attributeName.toLowerCase();
if ( gltfAttributeMap[ attributeName ] !== undefined ) {
var accessorDef = json.accessors[ primitive.attributes[ attributeName ] ];
var 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 ( var attributeName in geometry.attributes ) {
var attribute = geometry.attributes[ attributeName ];
var 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
*/
function GLTFTextureTransformExtension() {
this.name = EXTENSIONS.KHR_TEXTURE_TRANSFORM;
}
GLTFTextureTransformExtension.prototype.extendTexture = function ( texture, transform ) {
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 );
}
if ( transform.texCoord !== undefined ) {
console.warn( 'THREE.GLTFLoader: Custom UV sets in "' + this.name + '" extension not yet supported.' );
}
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
*/
function GLTFMeshStandardSGMaterial( params ) {
MeshStandardMaterial.call( this );
this.isGLTFSpecularGlossinessMaterial = true;
//various chunks that need replacing
var specularMapParsFragmentChunk = [
'#ifdef USE_SPECULARMAP',
' uniform sampler2D specularMap;',
'#endif'
].join( '\n' );
var glossinessMapParsFragmentChunk = [
'#ifdef USE_GLOSSINESSMAP',
' uniform sampler2D glossinessMap;',
'#endif'
].join( '\n' );
var 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' );
var 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' );
var lightPhysicalFragmentChunk = [
'PhysicalMaterial material;',
'material.diffuseColor = diffuseColor.rgb;',
'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.rgb;',
].join( '\n' );
var uniforms = {
specular: { value: new Color().setHex( 0xffffff ) },
glossiness: { value: 1 },
specularMap: { value: null },
glossinessMap: { value: null }
};
this._extraUniforms = uniforms;
// please see #14031 or #13198 for an alternate approach
this.onBeforeCompile = function ( shader ) {
for ( var uniformName in uniforms ) {
shader.uniforms[ uniformName ] = uniforms[ uniformName ];
}
shader.fragmentShader = shader.fragmentShader.replace( 'uniform float roughness;', 'uniform vec3 specular;' );
shader.fragmentShader = shader.fragmentShader.replace( 'uniform float metalness;', 'uniform float glossiness;' );
shader.fragmentShader = shader.fragmentShader.replace( '#include <roughnessmap_pars_fragment>', specularMapParsFragmentChunk );
shader.fragmentShader = shader.fragmentShader.replace( '#include <metalnessmap_pars_fragment>', glossinessMapParsFragmentChunk );
shader.fragmentShader = shader.fragmentShader.replace( '#include <roughnessmap_fragment>', specularMapFragmentChunk );
shader.fragmentShader = shader.fragmentShader.replace( '#include <metalnessmap_fragment>', glossinessMapFragmentChunk );
shader.fragmentShader = shader.fragmentShader.replace( '#include <lights_physical_fragment>', lightPhysicalFragmentChunk );
};
/*eslint-disable*/
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; }
},
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;
//how about something like this - @pailhead
if ( v ) {
this.defines.USE_GLOSSINESSMAP = '';
// set USE_ROUGHNESSMAP to enable vUv
this.defines.USE_ROUGHNESSMAP = '';
} else {
delete this.defines.USE_ROUGHNESSMAP;
delete this.defines.USE_GLOSSINESSMAP;
}
}
}
}
);
/*eslint-enable*/
delete this.metalness;
delete this.roughness;
delete this.metalnessMap;
delete this.roughnessMap;
this.setValues( params );
}
GLTFMeshStandardSGMaterial.prototype = Object.create( MeshStandardMaterial.prototype );
GLTFMeshStandardSGMaterial.prototype.constructor = GLTFMeshStandardSGMaterial;
GLTFMeshStandardSGMaterial.prototype.copy = function ( source ) {
MeshStandardMaterial.prototype.copy.call( this, 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;
};
function GLTFMaterialsPbrSpecularGlossinessExtension() {
return {
name: EXTENSIONS.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS,
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: function () {
return GLTFMeshStandardSGMaterial;
},
extendParams: function ( materialParams, materialDef, parser ) {
var pbrSpecularGlossiness = materialDef.extensions[ this.name ];
materialParams.color = new Color( 1.0, 1.0, 1.0 );
materialParams.opacity = 1.0;
var pending = [];
if ( Array.isArray( pbrSpecularGlossiness.diffuseFactor ) ) {
var 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 ) {
var specGlossMapDef = pbrSpecularGlossiness.specularGlossinessTexture;
pending.push( parser.assignTexture( materialParams, 'glossinessMap', specGlossMapDef ) );
pending.push( parser.assignTexture( materialParams, 'specularMap', specGlossMapDef ) );
}
return Promise.all( pending );
},
createMaterial: function ( materialParams ) {
var 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
*/
function GLTFMeshQuantizationExtension() {
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
function GLTFCubicSplineInterpolant( parameterPositions, sampleValues, sampleSize, resultBuffer ) {
Interpolant.call( this, parameterPositions, sampleValues, sampleSize, resultBuffer );
}
GLTFCubicSplineInterpolant.prototype = Object.create( Interpolant.prototype );
GLTFCubicSplineInterpolant.prototype.constructor = GLTFCubicSplineInterpolant;
GLTFCubicSplineInterpolant.prototype.copySampleValue_ = function ( index ) {
// Copies a sample value to the result buffer. See description of glTF
// CUBICSPLINE values layout in interpolate_() function below.
var result = this.resultBuffer,
values = this.sampleValues,
valueSize = this.valueSize,
offset = index * valueSize * 3 + valueSize;
for ( var 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 ) {
var result = this.resultBuffer;
var values = this.sampleValues;
var stride = this.valueSize;
var stride2 = stride * 2;
var stride3 = stride * 3;
var td = t1 - t0;
var p = ( t - t0 ) / td;
var pp = p * p;
var ppp = pp * p;
var offset1 = i1 * stride3;
var offset0 = offset1 - stride3;
var s2 = - 2 * ppp + 3 * pp;
var s3 = ppp - pp;
var s0 = 1 - s2;
var s1 = s3 - pp + p;
// Layout of keyframe output values for CUBICSPLINE animations:
// [ inTangent_1, splineVertex_1, outTangent_1, inTangent_2, splineVertex_2, ... ]
for ( var i = 0; i !== stride; i ++ ) {
var p0 = values[ offset0 + i + stride ]; // splineVertex_k
var m0 = values[ offset0 + i + stride2 ] * td; // outTangent_k * (t_k+1 - t_k)
var p1 = values[ offset1 + i + stride ]; // splineVertex_k+1
var 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 */
var 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
};
var WEBGL_COMPONENT_TYPES = {
5120: Int8Array,
5121: Uint8Array,
5122: Int16Array,
5123: Uint16Array,
5125: Uint32Array,
5126: Float32Array
};
var WEBGL_FILTERS = {
9728: NearestFilter,
9729: LinearFilter,
9984: NearestMipmapNearestFilter,
9985: LinearMipmapNearestFilter,
9986: NearestMipmapLinearFilter,
9987: LinearMipmapLinearFilter
};
var WEBGL_WRAPPINGS = {
33071: ClampToEdgeWrapping,
33648: MirroredRepeatWrapping,
10497: RepeatWrapping
};
var WEBGL_TYPE_SIZES = {
'SCALAR': 1,
'VEC2': 2,
'VEC3': 3,
'VEC4': 4,
'MAT2': 4,
'MAT3': 9,
'MAT4': 16
};
var ATTRIBUTES = {
POSITION: 'position',
NORMAL: 'normal',
TANGENT: 'tangent',
TEXCOORD_0: 'uv',
TEXCOORD_1: 'uv2',
COLOR_0: 'color',
WEIGHTS_0: 'skinWeight',
JOINTS_0: 'skinIndex',
};
var PATH_PROPERTIES = {
scale: 'scale',
translation: 'position',
rotation: 'quaternion',
weights: 'morphTargetInfluences'
};
var 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
};
var ALPHA_MODES = {
OPAQUE: 'OPAQUE',
MASK: 'MASK',
BLEND: 'BLEND'
};
var MIME_TYPE_FORMATS = {
'image/png': RGBAFormat,
'image/jpeg': RGBFormat
};
/* 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 ( var 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 ) {
var hasMorphPosition = false;
var hasMorphNormal = false;
for ( var i = 0, il = targets.length; i < il; i ++ ) {
var 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 );
var pendingPositionAccessors = [];
var pendingNormalAccessors = [];
for ( var i = 0, il = targets.length; i < il; i ++ ) {
var target = targets[ i ];
if ( hasMorphPosition ) {
var pendingAccessor = target.POSITION !== undefined
? parser.getDependency( 'accessor', target.POSITION )
: geometry.attributes.position;
pendingPositionAccessors.push( pendingAccessor );
}
if ( hasMorphNormal ) {
var 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 ) {
var morphPositions = accessors[ 0 ];
var 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 ( var 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 ) ) {
var targetNames = meshDef.extras.targetNames;
if ( mesh.morphTargetInfluences.length === targetNames.length ) {
mesh.morphTargetDictionary = {};
for ( var 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 ) {
var dracoExtension = primitiveDef.extensions && primitiveDef.extensions[ EXTENSIONS.KHR_DRACO_MESH_COMPRESSION ];
var 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 ) {
var attributesKey = '';
var keys = Object.keys( attributes ).sort();
for ( var i = 0, il = keys.length; i < il; i ++ ) {
attributesKey += keys[ i ] + ':' + attributes[ keys[ i ] ] + ';';
}
return attributesKey;
}
/* GLTF PARSER */
function GLTFParser( json, extensions, options ) {
this.json = json || {};
this.extensions = extensions || {};
this.options = options || {};
// loader object cache
this.cache = new GLTFRegistry();
// BufferGeometry caching
this.primitiveCache = {};
this.textureLoader = new TextureLoader( this.options.manager );
this.textureLoader.setCrossOrigin( this.options.crossOrigin );
this.fileLoader = new FileLoader( this.options.manager );
this.fileLoader.setResponseType( 'arraybuffer' );
if ( this.options.crossOrigin === 'use-credentials' ) {
this.fileLoader.setWithCredentials( true );
}
}
GLTFParser.prototype.parse = function ( onLoad, onError ) {
var parser = this;
var json = this.json;
var extensions = this.extensions;
// Clear the loader cache
this.cache.removeAll();
// Mark the special nodes/meshes in json for efficient parse
this.markDefs();
Promise.all( [
this.getDependencies( 'scene' ),
this.getDependencies( 'animation' ),
this.getDependencies( 'camera' ),
] ).then( function ( dependencies ) {
var 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 );
onLoad( result );
} ).catch( onError );
};
/**
* Marks the special nodes/meshes in json for efficient parse.
*/
GLTFParser.prototype.markDefs = function () {
var nodeDefs = this.json.nodes || [];
var skinDefs = this.json.skins || [];
var meshDefs = this.json.meshes || [];
var meshReferences = {};
var meshUses = {};
// Nothing in the node definition indicates whether it is a Bone or an
// Object3D. Use the skins' joint references to mark bones.
for ( var skinIndex = 0, skinLength = skinDefs.length; skinIndex < skinLength; skinIndex ++ ) {
var joints = skinDefs[ skinIndex ].joints;
for ( var i = 0, il = joints.length; i < il; i ++ ) {
nodeDefs[ joints[ i ] ].isBone = true;
}
}
// Meshes can (and should) be reused by multiple nodes in a glTF asset. To
// avoid having more than one Mesh with the same name, count
// references and rename instances below.
//
// Example: CesiumMilkTruck sample model reuses "Wheel" meshes.
for ( var nodeIndex = 0, nodeLength = nodeDefs.length; nodeIndex < nodeLength; nodeIndex ++ ) {
var nodeDef = nodeDefs[ nodeIndex ];
if ( nodeDef.mesh !== undefined ) {
if ( meshReferences[ nodeDef.mesh ] === undefined ) {
meshReferences[ nodeDef.mesh ] = meshUses[ nodeDef.mesh ] = 0;
}
meshReferences[ 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;
}
}
}
this.json.meshReferences = meshReferences;
this.json.meshUses = meshUses;
};
/**
* Requests the specified dependency asynchronously, with caching.
* @param {string} type
* @param {number} index
* @return {Promise<Object3D|Material|THREE.Texture|AnimationClip|ArrayBuffer|Object>}
*/
GLTFParser.prototype.getDependency = function ( type, index ) {
var cacheKey = type + ':' + index;
var 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.loadMesh( index );
break;
case 'accessor':
dependency = this.loadAccessor( index );
break;
case 'bufferView':
dependency = this.loadBufferView( index );
break;
case 'buffer':
dependency = this.loadBuffer( index );
break;
case 'material':
dependency = this.loadMaterial( index );
break;
case 'texture':
dependency = this.loadTexture( index );
break;
case 'skin':
dependency = this.loadSkin( index );
break;
case 'animation':
dependency = this.loadAnimation( index );
break;
case 'camera':
dependency = this.loadCamera( index );
break;
case 'light':
dependency = this.extensions[ EXTENSIONS.KHR_LIGHTS_PUNCTUAL ].loadLight( 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>>}
*/
GLTFParser.prototype.getDependencies = function ( type ) {
var dependencies = this.cache.get( type );
if ( ! dependencies ) {
var parser = this;
var 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>}
*/
GLTFParser.prototype.loadBuffer = function ( bufferIndex ) {
var bufferDef = this.json.buffers[ bufferIndex ];
var 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 );
}
var 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>}
*/
GLTFParser.prototype.loadBufferView = function ( bufferViewIndex ) {
var bufferViewDef = this.json.bufferViews[ bufferViewIndex ];
return this.getDependency( 'buffer', bufferViewDef.buffer ).then( function ( buffer ) {
var byteLength = bufferViewDef.byteLength || 0;
var 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>}
*/
GLTFParser.prototype.loadAccessor = function ( accessorIndex ) {
var parser = this;
var json = this.json;
var 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 );
}
var 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 ) {
var bufferView = bufferViews[ 0 ];
var itemSize = WEBGL_TYPE_SIZES[ accessorDef.type ];
var TypedArray = WEBGL_COMPONENT_TYPES[ accessorDef.componentType ];
// For VEC3: itemSize is 3, elementBytes is 4, itemBytes is 12.
var elementBytes = TypedArray.BYTES_PER_ELEMENT;
var itemBytes = elementBytes * itemSize;
var byteOffset = accessorDef.byteOffset || 0;
var byteStride = accessorDef.bufferView !== undefined ? json.bufferViews[ accessorDef.bufferView ].byteStride : undefined;
var normalized = accessorDef.normalized === true;
var 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
var ibSlice = Math.floor( byteOffset / byteStride );
var ibCacheKey = 'InterleavedBuffer:' + accessorDef.bufferView + ':' + accessorDef.componentType + ':' + ibSlice + ':' + accessorDef.count;
var 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 ) {
var itemSizeIndices = WEBGL_TYPE_SIZES.SCALAR;
var TypedArrayIndices = WEBGL_COMPONENT_TYPES[ accessorDef.sparse.indices.componentType ];
var byteOffsetIndices = accessorDef.sparse.indices.byteOffset || 0;
var byteOffsetValues = accessorDef.sparse.values.byteOffset || 0;
var sparseIndices = new TypedArrayIndices( bufferViews[ 1 ], byteOffsetIndices, accessorDef.sparse.count * itemSizeIndices );
var 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 ( var i = 0, il = sparseIndices.length; i < il; i ++ ) {
var 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>}
*/
GLTFParser.prototype.loadTexture = function ( textureIndex ) {
var parser = this;
var json = this.json;
var options = this.options;
var textureLoader = this.textureLoader;
var URL = self.URL || self.webkitURL;
var textureDef = json.textures[ textureIndex ];
var textureExtensions = textureDef.extensions || {};
var source;
if ( textureExtensions[ EXTENSIONS.MSFT_TEXTURE_DDS ] ) {
source = json.images[ textureExtensions[ EXTENSIONS.MSFT_TEXTURE_DDS ].source ];
} else {
source = json.images[ textureDef.source ];
}
var sourceURI = source.uri;
var 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;
var blob = new Blob( [ bufferView ], { type: source.mimeType } );
sourceURI = URL.createObjectURL( blob );
return sourceURI;
} );
}
return Promise.resolve( sourceURI ).then( function ( sourceURI ) {
// Load Texture resource.
var loader = options.manager.getHandler( sourceURI );
if ( ! loader ) {
loader = textureExtensions[ EXTENSIONS.MSFT_TEXTURE_DDS ]
? parser.extensions[ EXTENSIONS.MSFT_TEXTURE_DDS ].ddsLoader
: textureLoader;
}
return new Promise( function ( resolve, reject ) {
loader.load( resolveURL( sourceURI, options.path ), resolve, 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;
// Ignore unknown mime types, like DDS files.
if ( source.mimeType in MIME_TYPE_FORMATS ) {
texture.format = MIME_TYPE_FORMATS[ source.mimeType ];
}
var samplers = json.samplers || {};
var 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;
return texture;
} );
};
/**
* Asynchronously assigns a texture to the given material parameters.
* @param {Object} materialParams
* @param {string} mapName
* @param {Object} mapDef
* @return {Promise}
*/
GLTFParser.prototype.assignTexture = function ( materialParams, mapName, mapDef ) {
var parser = this;
return this.getDependency( 'texture', mapDef.index ).then( function ( texture ) {
if ( ! texture.isCompressedTexture ) {
switch ( mapName ) {
case 'aoMap':
case 'emissiveMap':
case 'metalnessMap':
case 'normalMap':
case 'roughnessMap':
texture.format = RGBFormat;
break;
}
}
// 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 ] ) {
var transform = mapDef.extensions !== undefined ? mapDef.extensions[ EXTENSIONS.KHR_TEXTURE_TRANSFORM ] : undefined;
if ( transform ) {
texture = parser.extensions[ EXTENSIONS.KHR_TEXTURE_TRANSFORM ].extendTexture( texture, transform );
}
}
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 accomodate 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.
*/
GLTFParser.prototype.assignFinalMaterial = function ( mesh ) {
var geometry = mesh.geometry;
var material = mesh.material;
var useVertexTangents = geometry.attributes.tangent !== undefined;
var useVertexColors = geometry.attributes.color !== undefined;
var useFlatShading = geometry.attributes.normal === undefined;
var useSkinning = mesh.isSkinnedMesh === true;
var useMorphTargets = Object.keys( geometry.morphAttributes ).length > 0;
var useMorphNormals = useMorphTargets && geometry.morphAttributes.normal !== undefined;
if ( mesh.isPoints ) {
var cacheKey = 'PointsMaterial:' + material.uuid;
var 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 ) {
var cacheKey = 'LineBasicMaterial:' + material.uuid;
var 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 || useSkinning || useMorphTargets ) {
var cacheKey = 'ClonedMaterial:' + material.uuid + ':';
if ( material.isGLTFSpecularGlossinessMaterial ) cacheKey += 'specular-glossiness:';
if ( useSkinning ) cacheKey += 'skinning:';
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:';
var cachedMaterial = this.cache.get( cacheKey );
if ( ! cachedMaterial ) {
cachedMaterial = material.clone();
if ( useSkinning ) cachedMaterial.skinning = true;
if ( useVertexTangents ) cachedMaterial.vertexTangents = true;
if ( useVertexColors ) cachedMaterial.vertexColors = true;
if ( useFlatShading ) cachedMaterial.flatShading = true;
if ( useMorphTargets ) cachedMaterial.morphTargets = true;
if ( useMorphNormals ) cachedMaterial.morphNormals = true;
this.cache.add( cacheKey, cachedMaterial );
}
material = cachedMaterial;
}
// workarounds for mesh and geometry
if ( material.aoMap && geometry.attributes.uv2 === undefined && geometry.attributes.uv !== undefined ) {
geometry.setAttribute( 'uv2', geometry.attributes.uv );
}
// https://github.com/mrdoob/three.js/issues/11438#issuecomment-507003995
if ( material.normalScale && ! useVertexTangents ) {
material.normalScale.y = - material.normalScale.y;
}
if ( material.clearcoatNormalScale && ! useVertexTangents ) {
material.clearcoatNormalScale.y = - material.clearcoatNormalScale.y;
}
mesh.material = material;
};
/**
* Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#materials
* @param {number} materialIndex
* @return {Promise<Material>}
*/
GLTFParser.prototype.loadMaterial = function ( materialIndex ) {
var parser = this;
var json = this.json;
var extensions = this.extensions;
var materialDef = json.materials[ materialIndex ];
var materialType;
var materialParams = {};
var materialExtensions = materialDef.extensions || {};
var pending = [];
if ( materialExtensions[ EXTENSIONS.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS ] ) {
var 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 ] ) {
var 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
materialType = MeshStandardMaterial;
var metallicRoughness = materialDef.pbrMetallicRoughness || {};
materialParams.color = new Color( 1.0, 1.0, 1.0 );
materialParams.opacity = 1.0;
if ( Array.isArray( metallicRoughness.baseColorFactor ) ) {
var 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 ) );
}
}
if ( materialDef.doubleSided === true ) {
materialParams.side = DoubleSide;
}
var 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 ) );
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 ) );
}
if ( materialExtensions[ EXTENSIONS.KHR_MATERIALS_CLEARCOAT ] ) {
var clearcoatExtension = extensions[ EXTENSIONS.KHR_MATERIALS_CLEARCOAT ];
materialType = clearcoatExtension.getMaterialType();
pending.push( clearcoatExtension.extendParams( materialParams, { extensions: materialExtensions }, parser ) );
}
return Promise.all( pending ).then( function () {
var 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 );
if ( materialDef.extensions ) addUnknownExtensionsToUserData( extensions, material, materialDef );
return material;
} );
};
/**
* @param {BufferGeometry} geometry
* @param {GLTF.Primitive} primitiveDef
* @param {GLTFParser} parser
*/
function computeBounds( geometry, primitiveDef, parser ) {
var attributes = primitiveDef.attributes;
var box = new Box3();
if ( attributes.POSITION !== undefined ) {
var accessor = parser.json.accessors[ attributes.POSITION ];
var min = accessor.min;
var 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 ] ) );
} else {
console.warn( 'THREE.GLTFLoader: Missing min/max properties for accessor POSITION.' );
return;
}
} else {
return;
}
var targets = primitiveDef.targets;
if ( targets !== undefined ) {
var maxDisplacement = new Vector3();
var vector = new Vector3();
for ( var i = 0, il = targets.length; i < il; i ++ ) {
var target = targets[ i ];
if ( target.POSITION !== undefined ) {
var accessor = parser.json.accessors[ target.POSITION ];
var min = accessor.min;
var 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 ] ) ) );
// 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;
var 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 ) {
var attributes = primitiveDef.attributes;
var pending = [];
function assignAttributeAccessor( accessorIndex, attributeName ) {
return parser.getDependency( 'accessor', accessorIndex )
.then( function ( accessor ) {
geometry.setAttribute( attributeName, accessor );
} );
}
for ( var gltfAttributeName in attributes ) {
var 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 ) {
var 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 ) {
var index = geometry.getIndex();
// generate index if not present
if ( index === null ) {
var indices = [];
var position = geometry.getAttribute( 'position' );
if ( position !== undefined ) {
for ( var 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;
}
}
//
var numberOfTriangles = index.count - 2;
var newIndices = [];
if ( drawMode === TriangleFanDrawMode ) {
// gl.TRIANGLE_FAN
for ( var 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 ( var 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
var newGeometry = geometry.clone();
newGeometry.setIndex( newIndices );
return newGeometry;
}
/**
* 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>>}
*/
GLTFParser.prototype.loadGeometries = function ( primitives ) {
var parser = this;
var extensions = this.extensions;
var cache = this.primitiveCache;
function createDracoPrimitive( primitive ) {
return extensions[ EXTENSIONS.KHR_DRACO_MESH_COMPRESSION ]
.decodePrimitive( primitive, parser )
.then( function ( geometry ) {
return addPrimitiveAttributes( geometry, primitive, parser );
} );
}
var pending = [];
for ( var i = 0, il = primitives.length; i < il; i ++ ) {
var primitive = primitives[ i ];
var cacheKey = createPrimitiveKey( primitive );
// See if we've already created this geometry
var cached = cache[ cacheKey ];
if ( cached ) {
// Use the cached geometry if it exists
pending.push( cached.promise );
} else {
var 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>}
*/
GLTFParser.prototype.loadMesh = function ( meshIndex ) {
var parser = this;
var json = this.json;
var meshDef = json.meshes[ meshIndex ];
var primitives = meshDef.primitives;
var pending = [];
for ( var i = 0, il = primitives.length; i < il; i ++ ) {
var 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 ) {
var materials = results.slice( 0, results.length - 1 );
var geometries = results[ results.length - 1 ];
var meshes = [];
for ( var i = 0, il = geometries.length; i < il; i ++ ) {
var geometry = geometries[ i ];
var primitive = primitives[ i ];
// 1. create Mesh
var mesh;
var 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 = meshDef.name || ( 'mesh_' + meshIndex );
if ( geometries.length > 1 ) mesh.name += '_' + i;
assignExtrasToUserData( mesh, meshDef );
parser.assignFinalMaterial( mesh );
meshes.push( mesh );
}
if ( meshes.length === 1 ) {
return meshes[ 0 ];
}
var group = new Group();
for ( var 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>}
*/
GLTFParser.prototype.loadCamera = function ( cameraIndex ) {
var camera;
var cameraDef = this.json.cameras[ cameraIndex ];
var 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 = 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>}
*/
GLTFParser.prototype.loadSkin = function ( skinIndex ) {
var skinDef = this.json.skins[ skinIndex ];
var 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>}
*/
GLTFParser.prototype.loadAnimation = function ( animationIndex ) {
var json = this.json;
var animationDef = json.animations[ animationIndex ];
var pendingNodes = [];
var pendingInputAccessors = [];
var pendingOutputAccessors = [];
var pendingSamplers = [];
var pendingTargets = [];
for ( var i = 0, il = animationDef.channels.length; i < il; i ++ ) {
var channel = animationDef.channels[ i ];
var sampler = animationDef.samplers[ channel.sampler ];
var target = channel.target;
var name = target.node !== undefined ? target.node : target.id; // NOTE: target.id is deprecated.
var input = animationDef.parameters !== undefined ? animationDef.parameters[ sampler.input ] : sampler.input;
var 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 ) {
var nodes = dependencies[ 0 ];
var inputAccessors = dependencies[ 1 ];
var outputAccessors = dependencies[ 2 ];
var samplers = dependencies[ 3 ];
var targets = dependencies[ 4 ];
var tracks = [];
for ( var i = 0, il = nodes.length; i < il; i ++ ) {
var node = nodes[ i ];
var inputAccessor = inputAccessors[ i ];
var outputAccessor = outputAccessors[ i ];
var sampler = samplers[ i ];
var target = targets[ i ];
if ( node === undefined ) continue;
node.updateMatrix();
node.matrixAutoUpdate = true;
var 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;
}
var targetName = node.name ? node.name : node.uuid;
var interpolation = sampler.interpolation !== undefined ? INTERPOLATION[ sampler.interpolation ] : InterpolateLinear;
var 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 );
}
var outputArray = outputAccessor.array;
if ( outputAccessor.normalized ) {
var scale;
if ( outputArray.constructor === Int8Array ) {
scale = 1 / 127;
} else if ( outputArray.constructor === Uint8Array ) {
scale = 1 / 255;
} else if ( outputArray.constructor == Int16Array ) {
scale = 1 / 32767;
} else if ( outputArray.constructor === Uint16Array ) {
scale = 1 / 65535;
} else {
throw new Error( 'THREE.GLTFLoader: Unsupported output accessor component type.' );
}
var scaled = new Float32Array( outputArray.length );
for ( var j = 0, jl = outputArray.length; j < jl; j ++ ) {
scaled[ j ] = outputArray[ j ] * scale;
}
outputArray = scaled;
}
for ( var j = 0, jl = targetNames.length; j < jl; j ++ ) {
var 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 );
}
}
var name = animationDef.name ? animationDef.name : 'animation_' + animationIndex;
return new AnimationClip( name, undefined, tracks );
} );
};
/**
* Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#nodes-and-hierarchy
* @param {number} nodeIndex
* @return {Promise<Object3D>}
*/
GLTFParser.prototype.loadNode = function ( nodeIndex ) {
var json = this.json;
var extensions = this.extensions;
var parser = this;
var meshReferences = json.meshReferences;
var meshUses = json.meshUses;
var nodeDef = json.nodes[ nodeIndex ];
return ( function () {
var pending = [];
if ( nodeDef.mesh !== undefined ) {
pending.push( parser.getDependency( 'mesh', nodeDef.mesh ).then( function ( mesh ) {
var node;
if ( meshReferences[ nodeDef.mesh ] > 1 ) {
var instanceNum = meshUses[ nodeDef.mesh ] ++;
node = mesh.clone();
node.name += '_instance_' + instanceNum;
} else {
node = 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 ( var i = 0, il = nodeDef.weights.length; i < il; i ++ ) {
o.morphTargetInfluences[ i ] = nodeDef.weights[ i ];
}
} );
}
return node;
} ) );
}
if ( nodeDef.camera !== undefined ) {
pending.push( parser.getDependency( 'camera', nodeDef.camera ) );
}
if ( nodeDef.extensions
&& nodeDef.extensions[ EXTENSIONS.KHR_LIGHTS_PUNCTUAL ]
&& nodeDef.extensions[ EXTENSIONS.KHR_LIGHTS_PUNCTUAL ].light !== undefined ) {
pending.push( parser.getDependency( 'light', nodeDef.extensions[ EXTENSIONS.KHR_LIGHTS_PUNCTUAL ].light ) );
}
return Promise.all( pending );
}() ).then( function ( objects ) {
var 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 ( var i = 0, il = objects.length; i < il; i ++ ) {
node.add( objects[ i ] );
}
}
if ( nodeDef.name ) {
node.userData.name = nodeDef.name;
node.name = PropertyBinding.sanitizeNodeName( nodeDef.name );
}
assignExtrasToUserData( node, nodeDef );
if ( nodeDef.extensions ) addUnknownExtensionsToUserData( extensions, node, nodeDef );
if ( nodeDef.matrix !== undefined ) {
var 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 );
}
}
return node;
} );
};
/**
* Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#scenes
* @param {number} sceneIndex
* @return {Promise<Group>}
*/
GLTFParser.prototype.loadScene = function () {
// scene node hierachy builder
function buildNodeHierachy( nodeId, parentObject, json, parser ) {
var nodeDef = json.nodes[ nodeId ];
return parser.getDependency( 'node', nodeId ).then( function ( node ) {
if ( nodeDef.skin === undefined ) return node;
// build skeleton here as well
var skinEntry;
return parser.getDependency( 'skin', nodeDef.skin ).then( function ( skin ) {
skinEntry = skin;
var pendingJoints = [];
for ( var 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;
var bones = [];
var boneInverses = [];
for ( var j = 0, jl = jointNodes.length; j < jl; j ++ ) {
var jointNode = jointNodes[ j ];
if ( jointNode ) {
bones.push( jointNode );
var 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 );
var pending = [];
if ( nodeDef.children ) {
var children = nodeDef.children;
for ( var i = 0, il = children.length; i < il; i ++ ) {
var child = children[ i ];
pending.push( buildNodeHierachy( child, node, json, parser ) );
}
}
return Promise.all( pending );
} );
}
return function loadScene( sceneIndex ) {
var json = this.json;
var extensions = this.extensions;
var sceneDef = this.json.scenes[ sceneIndex ];
var parser = this;
// Loader returns Group, not Scene.
// See: https://github.com/mrdoob/three.js/issues/18342#issuecomment-578981172
var scene = new Group();
if ( sceneDef.name ) scene.name = sceneDef.name;
assignExtrasToUserData( scene, sceneDef );
if ( sceneDef.extensions ) addUnknownExtensionsToUserData( extensions, scene, sceneDef );
var nodeIds = sceneDef.nodes || [];
var pending = [];
for ( var i = 0, il = nodeIds.length; i < il; i ++ ) {
pending.push( buildNodeHierachy( nodeIds[ i ], scene, json, parser ) );
}
return Promise.all( pending ).then( function () {
return scene;
} );
};
}();
return GLTFLoader;
} )()
Example #2
| Source File: BufferGeometryUtils.js From canvas with Apache License 2.0 | 4 votes |
|
BufferGeometryUtils = {
computeTangents: function ( geometry ) {
var index = geometry.index;
var attributes = geometry.attributes;
// based on http://www.terathon.com/code/tangent.html
// (per vertex tangents)
if ( index === null ||
attributes.position === undefined ||
attributes.normal === undefined ||
attributes.uv === undefined ) {
console.error( 'THREE.BufferGeometryUtils: .computeTangents() failed. Missing required attributes (index, position, normal or uv)' );
return;
}
var indices = index.array;
var positions = attributes.position.array;
var normals = attributes.normal.array;
var uvs = attributes.uv.array;
var nVertices = positions.length / 3;
if ( attributes.tangent === undefined ) {
geometry.setAttribute( 'tangent', new BufferAttribute( new Float32Array( 4 * nVertices ), 4 ) );
}
var tangents = attributes.tangent.array;
var tan1 = [], tan2 = [];
for ( var i = 0; i < nVertices; i ++ ) {
tan1[ i ] = new Vector3();
tan2[ i ] = new Vector3();
}
var vA = new Vector3(),
vB = new Vector3(),
vC = new Vector3(),
uvA = new Vector2(),
uvB = new Vector2(),
uvC = new Vector2(),
sdir = new Vector3(),
tdir = new Vector3();
function handleTriangle( a, b, c ) {
vA.fromArray( positions, a * 3 );
vB.fromArray( positions, b * 3 );
vC.fromArray( positions, c * 3 );
uvA.fromArray( uvs, a * 2 );
uvB.fromArray( uvs, b * 2 );
uvC.fromArray( uvs, c * 2 );
vB.sub( vA );
vC.sub( vA );
uvB.sub( uvA );
uvC.sub( uvA );
var r = 1.0 / ( uvB.x * uvC.y - uvC.x * uvB.y );
// silently ignore degenerate uv triangles having coincident or colinear vertices
if ( ! isFinite( r ) ) return;
sdir.copy( vB ).multiplyScalar( uvC.y ).addScaledVector( vC, - uvB.y ).multiplyScalar( r );
tdir.copy( vC ).multiplyScalar( uvB.x ).addScaledVector( vB, - uvC.x ).multiplyScalar( r );
tan1[ a ].add( sdir );
tan1[ b ].add( sdir );
tan1[ c ].add( sdir );
tan2[ a ].add( tdir );
tan2[ b ].add( tdir );
tan2[ c ].add( tdir );
}
var groups = geometry.groups;
if ( groups.length === 0 ) {
groups = [ {
start: 0,
count: indices.length
} ];
}
for ( var i = 0, il = groups.length; i < il; ++ i ) {
var group = groups[ i ];
var start = group.start;
var count = group.count;
for ( var j = start, jl = start + count; j < jl; j += 3 ) {
handleTriangle(
indices[ j + 0 ],
indices[ j + 1 ],
indices[ j + 2 ]
);
}
}
var tmp = new Vector3(), tmp2 = new Vector3();
var n = new Vector3(), n2 = new Vector3();
var w, t, test;
function handleVertex( v ) {
n.fromArray( normals, v * 3 );
n2.copy( n );
t = tan1[ v ];
// Gram-Schmidt orthogonalize
tmp.copy( t );
tmp.sub( n.multiplyScalar( n.dot( t ) ) ).normalize();
// Calculate handedness
tmp2.crossVectors( n2, t );
test = tmp2.dot( tan2[ v ] );
w = ( test < 0.0 ) ? - 1.0 : 1.0;
tangents[ v * 4 ] = tmp.x;
tangents[ v * 4 + 1 ] = tmp.y;
tangents[ v * 4 + 2 ] = tmp.z;
tangents[ v * 4 + 3 ] = w;
}
for ( var i = 0, il = groups.length; i < il; ++ i ) {
var group = groups[ i ];
var start = group.start;
var count = group.count;
for ( var j = start, jl = start + count; j < jl; j += 3 ) {
handleVertex( indices[ j + 0 ] );
handleVertex( indices[ j + 1 ] );
handleVertex( indices[ j + 2 ] );
}
}
},
/**
* @param {Array<BufferGeometry>} geometries
* @param {Boolean} useGroups
* @return {BufferGeometry}
*/
mergeBufferGeometries: function ( geometries, useGroups ) {
var isIndexed = geometries[ 0 ].index !== null;
var attributesUsed = new Set( Object.keys( geometries[ 0 ].attributes ) );
var morphAttributesUsed = new Set( Object.keys( geometries[ 0 ].morphAttributes ) );
var attributes = {};
var morphAttributes = {};
var morphTargetsRelative = geometries[ 0 ].morphTargetsRelative;
var mergedGeometry = new BufferGeometry();
var offset = 0;
for ( var i = 0; i < geometries.length; ++ i ) {
var geometry = geometries[ i ];
var attributesCount = 0;
// ensure that all geometries are indexed, or none
if ( isIndexed !== ( geometry.index !== null ) ) {
console.error( 'THREE.BufferGeometryUtils: .mergeBufferGeometries() failed with geometry at index ' + i + '. All geometries must have compatible attributes; make sure index attribute exists among all geometries, or in none of them.' );
return null;
}
// gather attributes, exit early if they're different
for ( var name in geometry.attributes ) {
if ( ! attributesUsed.has( name ) ) {
console.error( 'THREE.BufferGeometryUtils: .mergeBufferGeometries() failed with geometry at index ' + i + '. All geometries must have compatible attributes; make sure "' + name + '" attribute exists among all geometries, or in none of them.' );
return null;
}
if ( attributes[ name ] === undefined ) attributes[ name ] = [];
attributes[ name ].push( geometry.attributes[ name ] );
attributesCount ++;
}
// ensure geometries have the same number of attributes
if ( attributesCount !== attributesUsed.size ) {
console.error( 'THREE.BufferGeometryUtils: .mergeBufferGeometries() failed with geometry at index ' + i + '. Make sure all geometries have the same number of attributes.' );
return null;
}
// gather morph attributes, exit early if they're different
if ( morphTargetsRelative !== geometry.morphTargetsRelative ) {
console.error( 'THREE.BufferGeometryUtils: .mergeBufferGeometries() failed with geometry at index ' + i + '. .morphTargetsRelative must be consistent throughout all geometries.' );
return null;
}
for ( var name in geometry.morphAttributes ) {
if ( ! morphAttributesUsed.has( name ) ) {
console.error( 'THREE.BufferGeometryUtils: .mergeBufferGeometries() failed with geometry at index ' + i + '. .morphAttributes must be consistent throughout all geometries.' );
return null;
}
if ( morphAttributes[ name ] === undefined ) morphAttributes[ name ] = [];
morphAttributes[ name ].push( geometry.morphAttributes[ name ] );
}
// gather .userData
mergedGeometry.userData.mergedUserData = mergedGeometry.userData.mergedUserData || [];
mergedGeometry.userData.mergedUserData.push( geometry.userData );
if ( useGroups ) {
var count;
if ( isIndexed ) {
count = geometry.index.count;
} else if ( geometry.attributes.position !== undefined ) {
count = geometry.attributes.position.count;
} else {
console.error( 'THREE.BufferGeometryUtils: .mergeBufferGeometries() failed with geometry at index ' + i + '. The geometry must have either an index or a position attribute' );
return null;
}
mergedGeometry.addGroup( offset, count, i );
offset += count;
}
}
// merge indices
if ( isIndexed ) {
var indexOffset = 0;
var mergedIndex = [];
for ( var i = 0; i < geometries.length; ++ i ) {
var index = geometries[ i ].index;
for ( var j = 0; j < index.count; ++ j ) {
mergedIndex.push( index.getX( j ) + indexOffset );
}
indexOffset += geometries[ i ].attributes.position.count;
}
mergedGeometry.setIndex( mergedIndex );
}
// merge attributes
for ( var name in attributes ) {
var mergedAttribute = this.mergeBufferAttributes( attributes[ name ] );
if ( ! mergedAttribute ) {
console.error( 'THREE.BufferGeometryUtils: .mergeBufferGeometries() failed while trying to merge the ' + name + ' attribute.' );
return null;
}
mergedGeometry.setAttribute( name, mergedAttribute );
}
// merge morph attributes
for ( var name in morphAttributes ) {
var numMorphTargets = morphAttributes[ name ][ 0 ].length;
if ( numMorphTargets === 0 ) break;
mergedGeometry.morphAttributes = mergedGeometry.morphAttributes || {};
mergedGeometry.morphAttributes[ name ] = [];
for ( var i = 0; i < numMorphTargets; ++ i ) {
var morphAttributesToMerge = [];
for ( var j = 0; j < morphAttributes[ name ].length; ++ j ) {
morphAttributesToMerge.push( morphAttributes[ name ][ j ][ i ] );
}
var mergedMorphAttribute = this.mergeBufferAttributes( morphAttributesToMerge );
if ( ! mergedMorphAttribute ) {
console.error( 'THREE.BufferGeometryUtils: .mergeBufferGeometries() failed while trying to merge the ' + name + ' morphAttribute.' );
return null;
}
mergedGeometry.morphAttributes[ name ].push( mergedMorphAttribute );
}
}
return mergedGeometry;
},
/**
* @param {Array<BufferAttribute>} attributes
* @return {BufferAttribute}
*/
mergeBufferAttributes: function ( attributes ) {
var TypedArray;
var itemSize;
var normalized;
var arrayLength = 0;
for ( var i = 0; i < attributes.length; ++ i ) {
var attribute = attributes[ i ];
if ( attribute.isInterleavedBufferAttribute ) {
console.error( 'THREE.BufferGeometryUtils: .mergeBufferAttributes() failed. InterleavedBufferAttributes are not supported.' );
return null;
}
if ( TypedArray === undefined ) TypedArray = attribute.array.constructor;
if ( TypedArray !== attribute.array.constructor ) {
console.error( 'THREE.BufferGeometryUtils: .mergeBufferAttributes() failed. BufferAttribute.array must be of consistent array types across matching attributes.' );
return null;
}
if ( itemSize === undefined ) itemSize = attribute.itemSize;
if ( itemSize !== attribute.itemSize ) {
console.error( 'THREE.BufferGeometryUtils: .mergeBufferAttributes() failed. BufferAttribute.itemSize must be consistent across matching attributes.' );
return null;
}
if ( normalized === undefined ) normalized = attribute.normalized;
if ( normalized !== attribute.normalized ) {
console.error( 'THREE.BufferGeometryUtils: .mergeBufferAttributes() failed. BufferAttribute.normalized must be consistent across matching attributes.' );
return null;
}
arrayLength += attribute.array.length;
}
var array = new TypedArray( arrayLength );
var offset = 0;
for ( var i = 0; i < attributes.length; ++ i ) {
array.set( attributes[ i ].array, offset );
offset += attributes[ i ].array.length;
}
return new BufferAttribute( array, itemSize, normalized );
},
/**
* @param {Array<BufferAttribute>} attributes
* @return {Array<InterleavedBufferAttribute>}
*/
interleaveAttributes: function ( attributes ) {
// Interleaves the provided attributes into an InterleavedBuffer and returns
// a set of InterleavedBufferAttributes for each attribute
var TypedArray;
var arrayLength = 0;
var stride = 0;
// calculate the the length and type of the interleavedBuffer
for ( var i = 0, l = attributes.length; i < l; ++ i ) {
var attribute = attributes[ i ];
if ( TypedArray === undefined ) TypedArray = attribute.array.constructor;
if ( TypedArray !== attribute.array.constructor ) {
console.error( 'AttributeBuffers of different types cannot be interleaved' );
return null;
}
arrayLength += attribute.array.length;
stride += attribute.itemSize;
}
// Create the set of buffer attributes
var interleavedBuffer = new InterleavedBuffer( new TypedArray( arrayLength ), stride );
var offset = 0;
var res = [];
var getters = [ 'getX', 'getY', 'getZ', 'getW' ];
var setters = [ 'setX', 'setY', 'setZ', 'setW' ];
for ( var j = 0, l = attributes.length; j < l; j ++ ) {
var attribute = attributes[ j ];
var itemSize = attribute.itemSize;
var count = attribute.count;
var iba = new InterleavedBufferAttribute( interleavedBuffer, itemSize, offset, attribute.normalized );
res.push( iba );
offset += itemSize;
// Move the data for each attribute into the new interleavedBuffer
// at the appropriate offset
for ( var c = 0; c < count; c ++ ) {
for ( var k = 0; k < itemSize; k ++ ) {
iba[ setters[ k ] ]( c, attribute[ getters[ k ] ]( c ) );
}
}
}
return res;
},
/**
* @param {Array<BufferGeometry>} geometry
* @return {number}
*/
estimateBytesUsed: function ( geometry ) {
// Return the estimated memory used by this geometry in bytes
// Calculate using itemSize, count, and BYTES_PER_ELEMENT to account
// for InterleavedBufferAttributes.
var mem = 0;
for ( var name in geometry.attributes ) {
var attr = geometry.getAttribute( name );
mem += attr.count * attr.itemSize * attr.array.BYTES_PER_ELEMENT;
}
var indices = geometry.getIndex();
mem += indices ? indices.count * indices.itemSize * indices.array.BYTES_PER_ELEMENT : 0;
return mem;
},
/**
* @param {BufferGeometry} geometry
* @param {number} tolerance
* @return {BufferGeometry>}
*/
mergeVertices: function ( geometry, tolerance = 1e-4 ) {
tolerance = Math.max( tolerance, Number.EPSILON );
// Generate an index buffer if the geometry doesn't have one, or optimize it
// if it's already available.
var hashToIndex = {};
var indices = geometry.getIndex();
var positions = geometry.getAttribute( 'position' );
var vertexCount = indices ? indices.count : positions.count;
// next value for triangle indices
var nextIndex = 0;
// attributes and new attribute arrays
var attributeNames = Object.keys( geometry.attributes );
var attrArrays = {};
var morphAttrsArrays = {};
var newIndices = [];
var getters = [ 'getX', 'getY', 'getZ', 'getW' ];
// initialize the arrays
for ( var i = 0, l = attributeNames.length; i < l; i ++ ) {
var name = attributeNames[ i ];
attrArrays[ name ] = [];
var morphAttr = geometry.morphAttributes[ name ];
if ( morphAttr ) {
morphAttrsArrays[ name ] = new Array( morphAttr.length ).fill().map( () => [] );
}
}
// convert the error tolerance to an amount of decimal places to truncate to
var decimalShift = Math.log10( 1 / tolerance );
var shiftMultiplier = Math.pow( 10, decimalShift );
for ( var i = 0; i < vertexCount; i ++ ) {
var index = indices ? indices.getX( i ) : i;
// Generate a hash for the vertex attributes at the current index 'i'
var hash = '';
for ( var j = 0, l = attributeNames.length; j < l; j ++ ) {
var name = attributeNames[ j ];
var attribute = geometry.getAttribute( name );
var itemSize = attribute.itemSize;
for ( var k = 0; k < itemSize; k ++ ) {
// double tilde truncates the decimal value
hash += `${ ~ ~ ( attribute[ getters[ k ] ]( index ) * shiftMultiplier ) },`;
}
}
// Add another reference to the vertex if it's already
// used by another index
if ( hash in hashToIndex ) {
newIndices.push( hashToIndex[ hash ] );
} else {
// copy data to the new index in the attribute arrays
for ( var j = 0, l = attributeNames.length; j < l; j ++ ) {
var name = attributeNames[ j ];
var attribute = geometry.getAttribute( name );
var morphAttr = geometry.morphAttributes[ name ];
var itemSize = attribute.itemSize;
var newarray = attrArrays[ name ];
var newMorphArrays = morphAttrsArrays[ name ];
for ( var k = 0; k < itemSize; k ++ ) {
var getterFunc = getters[ k ];
newarray.push( attribute[ getterFunc ]( index ) );
if ( morphAttr ) {
for ( var m = 0, ml = morphAttr.length; m < ml; m ++ ) {
newMorphArrays[ m ].push( morphAttr[ m ][ getterFunc ]( index ) );
}
}
}
}
hashToIndex[ hash ] = nextIndex;
newIndices.push( nextIndex );
nextIndex ++;
}
}
// Generate typed arrays from new attribute arrays and update
// the attributeBuffers
const result = geometry.clone();
for ( var i = 0, l = attributeNames.length; i < l; i ++ ) {
var name = attributeNames[ i ];
var oldAttribute = geometry.getAttribute( name );
var buffer = new oldAttribute.array.constructor( attrArrays[ name ] );
var attribute = new BufferAttribute( buffer, oldAttribute.itemSize, oldAttribute.normalized );
result.setAttribute( name, attribute );
// Update the attribute arrays
if ( name in morphAttrsArrays ) {
for ( var j = 0; j < morphAttrsArrays[ name ].length; j ++ ) {
var oldMorphAttribute = geometry.morphAttributes[ name ][ j ];
var buffer = new oldMorphAttribute.array.constructor( morphAttrsArrays[ name ][ j ] );
var morphAttribute = new BufferAttribute( buffer, oldMorphAttribute.itemSize, oldMorphAttribute.normalized );
result.morphAttributes[ name ][ j ] = morphAttribute;
}
}
}
// indices
result.setIndex( newIndices );
return result;
},
/**
* @param {BufferGeometry} geometry
* @param {number} drawMode
* @return {BufferGeometry>}
*/
toTrianglesDrawMode: function ( geometry, drawMode ) {
if ( drawMode === TrianglesDrawMode ) {
console.warn( 'THREE.BufferGeometryUtils.toTrianglesDrawMode(): Geometry already defined as triangles.' );
return geometry;
}
if ( drawMode === TriangleFanDrawMode || drawMode === TriangleStripDrawMode ) {
var index = geometry.getIndex();
// generate index if not present
if ( index === null ) {
var indices = [];
var position = geometry.getAttribute( 'position' );
if ( position !== undefined ) {
for ( var i = 0; i < position.count; i ++ ) {
indices.push( i );
}
geometry.setIndex( indices );
index = geometry.getIndex();
} else {
console.error( 'THREE.BufferGeometryUtils.toTrianglesDrawMode(): Undefined position attribute. Processing not possible.' );
return geometry;
}
}
//
var numberOfTriangles = index.count - 2;
var newIndices = [];
if ( drawMode === TriangleFanDrawMode ) {
// gl.TRIANGLE_FAN
for ( var 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 ( var 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.BufferGeometryUtils.toTrianglesDrawMode(): Unable to generate correct amount of triangles.' );
}
// build final geometry
var newGeometry = geometry.clone();
newGeometry.setIndex( newIndices );
newGeometry.clearGroups();
return newGeometry;
} else {
console.error( 'THREE.BufferGeometryUtils.toTrianglesDrawMode(): Unknown draw mode:', drawMode );
return geometry;
}
}
}
Example #3
| Source File: GLTFLoader.js From FirstPersonCameraControl with MIT License | 4 votes |
|
GLTFLoader = ( function () {
function GLTFLoader( manager ) {
Loader.call( this, manager );
this.dracoLoader = null;
this.ddsLoader = null;
}
GLTFLoader.prototype = Object.assign( Object.create( Loader.prototype ), {
constructor: GLTFLoader,
load: function ( url, onLoad, onProgress, onError ) {
var scope = this;
var resourcePath;
if ( this.resourcePath !== '' ) {
resourcePath = this.resourcePath;
} else if ( this.path !== '' ) {
resourcePath = this.path;
} else {
resourcePath = 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.
scope.manager.itemStart( url );
var _onError = function ( e ) {
if ( onError ) {
onError( e );
} else {
console.error( e );
}
scope.manager.itemError( url );
scope.manager.itemEnd( url );
};
var loader = new FileLoader( scope.manager );
loader.setPath( this.path );
loader.setResponseType( 'arraybuffer' );
if ( scope.crossOrigin === 'use-credentials' ) {
loader.setWithCredentials( true );
}
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: function ( dracoLoader ) {
this.dracoLoader = dracoLoader;
return this;
},
setDDSLoader: function ( ddsLoader ) {
this.ddsLoader = ddsLoader;
return this;
},
parse: function ( data, path, onLoad, onError ) {
var content;
var extensions = {};
if ( typeof data === 'string' ) {
content = data;
} else {
var magic = 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 = LoaderUtils.decodeText( new Uint8Array( data ) );
}
}
var 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;
}
if ( json.extensionsUsed ) {
for ( var i = 0; i < json.extensionsUsed.length; ++ i ) {
var extensionName = json.extensionsUsed[ i ];
var extensionsRequired = json.extensionsRequired || [];
switch ( extensionName ) {
case EXTENSIONS.KHR_LIGHTS_PUNCTUAL:
extensions[ extensionName ] = new GLTFLightsExtension( json );
break;
case EXTENSIONS.KHR_MATERIALS_CLEARCOAT:
extensions[ extensionName ] = new GLTFMaterialsClearcoatExtension();
break;
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.MSFT_TEXTURE_DDS:
extensions[ extensionName ] = new GLTFTextureDDSExtension( this.ddsLoader );
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 ) {
console.warn( 'THREE.GLTFLoader: Unknown extension "' + extensionName + '".' );
}
}
}
}
var parser = new GLTFParser( json, extensions, {
path: path || this.resourcePath || '',
crossOrigin: this.crossOrigin,
manager: this.manager
} );
parser.parse( onLoad, onError );
}
} );
/* GLTFREGISTRY */
function GLTFRegistry() {
var 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 ***********/
/*********************************/
var 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_UNLIT: 'KHR_materials_unlit',
KHR_TEXTURE_TRANSFORM: 'KHR_texture_transform',
KHR_MESH_QUANTIZATION: 'KHR_mesh_quantization',
MSFT_TEXTURE_DDS: 'MSFT_texture_dds'
};
/**
* DDS Texture Extension
*
* Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Vendor/MSFT_texture_dds
*
*/
function GLTFTextureDDSExtension( ddsLoader ) {
if ( ! ddsLoader ) {
throw new Error( 'THREE.GLTFLoader: Attempting to load .dds texture without importing DDSLoader' );
}
this.name = EXTENSIONS.MSFT_TEXTURE_DDS;
this.ddsLoader = ddsLoader;
}
/**
* Punctual Lights Extension
*
* Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_lights_punctual
*/
function GLTFLightsExtension( json ) {
this.name = EXTENSIONS.KHR_LIGHTS_PUNCTUAL;
var extension = ( json.extensions && json.extensions[ EXTENSIONS.KHR_LIGHTS_PUNCTUAL ] ) || {};
this.lightDefs = extension.lights || [];
}
GLTFLightsExtension.prototype.loadLight = function ( lightIndex ) {
var lightDef = this.lightDefs[ lightIndex ];
var lightNode;
var color = new Color( 0xffffff );
if ( lightDef.color !== undefined ) color.fromArray( lightDef.color );
var 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 = lightDef.name || ( 'light_' + lightIndex );
return Promise.resolve( lightNode );
};
/**
* Unlit Materials Extension
*
* Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_unlit
*/
function GLTFMaterialsUnlitExtension() {
this.name = EXTENSIONS.KHR_MATERIALS_UNLIT;
}
GLTFMaterialsUnlitExtension.prototype.getMaterialType = function () {
return MeshBasicMaterial;
};
GLTFMaterialsUnlitExtension.prototype.extendParams = function ( materialParams, materialDef, parser ) {
var pending = [];
materialParams.color = new Color( 1.0, 1.0, 1.0 );
materialParams.opacity = 1.0;
var metallicRoughness = materialDef.pbrMetallicRoughness;
if ( metallicRoughness ) {
if ( Array.isArray( metallicRoughness.baseColorFactor ) ) {
var 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
*/
function GLTFMaterialsClearcoatExtension() {
this.name = EXTENSIONS.KHR_MATERIALS_CLEARCOAT;
}
GLTFMaterialsClearcoatExtension.prototype.getMaterialType = function () {
return MeshPhysicalMaterial;
};
GLTFMaterialsClearcoatExtension.prototype.extendParams = function ( materialParams, materialDef, parser ) {
var pending = [];
var 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 ) {
var scale = extension.clearcoatNormalTexture.scale;
materialParams.clearcoatNormalScale = new Vector2( scale, scale );
}
}
return Promise.all( pending );
};
/* BINARY EXTENSION */
var BINARY_EXTENSION_HEADER_MAGIC = 'glTF';
var BINARY_EXTENSION_HEADER_LENGTH = 12;
var BINARY_EXTENSION_CHUNK_TYPES = { JSON: 0x4E4F534A, BIN: 0x004E4942 };
function GLTFBinaryExtension( data ) {
this.name = EXTENSIONS.KHR_BINARY_GLTF;
this.content = null;
this.body = null;
var 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.' );
}
var chunkView = new DataView( data, BINARY_EXTENSION_HEADER_LENGTH );
var chunkIndex = 0;
while ( chunkIndex < chunkView.byteLength ) {
var chunkLength = chunkView.getUint32( chunkIndex, true );
chunkIndex += 4;
var chunkType = chunkView.getUint32( chunkIndex, true );
chunkIndex += 4;
if ( chunkType === BINARY_EXTENSION_CHUNK_TYPES.JSON ) {
var contentArray = new Uint8Array( data, BINARY_EXTENSION_HEADER_LENGTH + chunkIndex, chunkLength );
this.content = LoaderUtils.decodeText( contentArray );
} else if ( chunkType === BINARY_EXTENSION_CHUNK_TYPES.BIN ) {
var 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
*/
function GLTFDracoMeshCompressionExtension( 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();
}
GLTFDracoMeshCompressionExtension.prototype.decodePrimitive = function ( primitive, parser ) {
var json = this.json;
var dracoLoader = this.dracoLoader;
var bufferViewIndex = primitive.extensions[ this.name ].bufferView;
var gltfAttributeMap = primitive.extensions[ this.name ].attributes;
var threeAttributeMap = {};
var attributeNormalizedMap = {};
var attributeTypeMap = {};
for ( var attributeName in gltfAttributeMap ) {
var threeAttributeName = ATTRIBUTES[ attributeName ] || attributeName.toLowerCase();
threeAttributeMap[ threeAttributeName ] = gltfAttributeMap[ attributeName ];
}
for ( attributeName in primitive.attributes ) {
var threeAttributeName = ATTRIBUTES[ attributeName ] || attributeName.toLowerCase();
if ( gltfAttributeMap[ attributeName ] !== undefined ) {
var accessorDef = json.accessors[ primitive.attributes[ attributeName ] ];
var 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 ( var attributeName in geometry.attributes ) {
var attribute = geometry.attributes[ attributeName ];
var 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
*/
function GLTFTextureTransformExtension() {
this.name = EXTENSIONS.KHR_TEXTURE_TRANSFORM;
}
GLTFTextureTransformExtension.prototype.extendTexture = function ( texture, transform ) {
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 );
}
if ( transform.texCoord !== undefined ) {
console.warn( 'THREE.GLTFLoader: Custom UV sets in "' + this.name + '" extension not yet supported.' );
}
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
*/
function GLTFMeshStandardSGMaterial( params ) {
MeshStandardMaterial.call( this );
this.isGLTFSpecularGlossinessMaterial = true;
//various chunks that need replacing
var specularMapParsFragmentChunk = [
'#ifdef USE_SPECULARMAP',
' uniform sampler2D specularMap;',
'#endif'
].join( '\n' );
var glossinessMapParsFragmentChunk = [
'#ifdef USE_GLOSSINESSMAP',
' uniform sampler2D glossinessMap;',
'#endif'
].join( '\n' );
var 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' );
var 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' );
var lightPhysicalFragmentChunk = [
'PhysicalMaterial material;',
'material.diffuseColor = diffuseColor.rgb;',
'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.rgb;',
].join( '\n' );
var uniforms = {
specular: { value: new Color().setHex( 0xffffff ) },
glossiness: { value: 1 },
specularMap: { value: null },
glossinessMap: { value: null }
};
this._extraUniforms = uniforms;
// please see #14031 or #13198 for an alternate approach
this.onBeforeCompile = function ( shader ) {
for ( var uniformName in uniforms ) {
shader.uniforms[ uniformName ] = uniforms[ uniformName ];
}
shader.fragmentShader = shader.fragmentShader.replace( 'uniform float roughness;', 'uniform vec3 specular;' );
shader.fragmentShader = shader.fragmentShader.replace( 'uniform float metalness;', 'uniform float glossiness;' );
shader.fragmentShader = shader.fragmentShader.replace( '#include <roughnessmap_pars_fragment>', specularMapParsFragmentChunk );
shader.fragmentShader = shader.fragmentShader.replace( '#include <metalnessmap_pars_fragment>', glossinessMapParsFragmentChunk );
shader.fragmentShader = shader.fragmentShader.replace( '#include <roughnessmap_fragment>', specularMapFragmentChunk );
shader.fragmentShader = shader.fragmentShader.replace( '#include <metalnessmap_fragment>', glossinessMapFragmentChunk );
shader.fragmentShader = shader.fragmentShader.replace( '#include <lights_physical_fragment>', lightPhysicalFragmentChunk );
};
/*eslint-disable*/
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; }
},
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;
//how about something like this - @pailhead
if ( v ) {
this.defines.USE_GLOSSINESSMAP = '';
// set USE_ROUGHNESSMAP to enable vUv
this.defines.USE_ROUGHNESSMAP = '';
} else {
delete this.defines.USE_ROUGHNESSMAP;
delete this.defines.USE_GLOSSINESSMAP;
}
}
}
}
);
/*eslint-enable*/
delete this.metalness;
delete this.roughness;
delete this.metalnessMap;
delete this.roughnessMap;
this.setValues( params );
}
GLTFMeshStandardSGMaterial.prototype = Object.create( MeshStandardMaterial.prototype );
GLTFMeshStandardSGMaterial.prototype.constructor = GLTFMeshStandardSGMaterial;
GLTFMeshStandardSGMaterial.prototype.copy = function ( source ) {
MeshStandardMaterial.prototype.copy.call( this, 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;
};
function GLTFMaterialsPbrSpecularGlossinessExtension() {
return {
name: EXTENSIONS.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS,
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: function () {
return GLTFMeshStandardSGMaterial;
},
extendParams: function ( materialParams, materialDef, parser ) {
var pbrSpecularGlossiness = materialDef.extensions[ this.name ];
materialParams.color = new Color( 1.0, 1.0, 1.0 );
materialParams.opacity = 1.0;
var pending = [];
if ( Array.isArray( pbrSpecularGlossiness.diffuseFactor ) ) {
var 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 ) {
var specGlossMapDef = pbrSpecularGlossiness.specularGlossinessTexture;
pending.push( parser.assignTexture( materialParams, 'glossinessMap', specGlossMapDef ) );
pending.push( parser.assignTexture( materialParams, 'specularMap', specGlossMapDef ) );
}
return Promise.all( pending );
},
createMaterial: function ( materialParams ) {
var 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
*/
function GLTFMeshQuantizationExtension() {
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
function GLTFCubicSplineInterpolant( parameterPositions, sampleValues, sampleSize, resultBuffer ) {
Interpolant.call( this, parameterPositions, sampleValues, sampleSize, resultBuffer );
}
GLTFCubicSplineInterpolant.prototype = Object.create( Interpolant.prototype );
GLTFCubicSplineInterpolant.prototype.constructor = GLTFCubicSplineInterpolant;
GLTFCubicSplineInterpolant.prototype.copySampleValue_ = function ( index ) {
// Copies a sample value to the result buffer. See description of glTF
// CUBICSPLINE values layout in interpolate_() function below.
var result = this.resultBuffer,
values = this.sampleValues,
valueSize = this.valueSize,
offset = index * valueSize * 3 + valueSize;
for ( var 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 ) {
var result = this.resultBuffer;
var values = this.sampleValues;
var stride = this.valueSize;
var stride2 = stride * 2;
var stride3 = stride * 3;
var td = t1 - t0;
var p = ( t - t0 ) / td;
var pp = p * p;
var ppp = pp * p;
var offset1 = i1 * stride3;
var offset0 = offset1 - stride3;
var s2 = - 2 * ppp + 3 * pp;
var s3 = ppp - pp;
var s0 = 1 - s2;
var s1 = s3 - pp + p;
// Layout of keyframe output values for CUBICSPLINE animations:
// [ inTangent_1, splineVertex_1, outTangent_1, inTangent_2, splineVertex_2, ... ]
for ( var i = 0; i !== stride; i ++ ) {
var p0 = values[ offset0 + i + stride ]; // splineVertex_k
var m0 = values[ offset0 + i + stride2 ] * td; // outTangent_k * (t_k+1 - t_k)
var p1 = values[ offset1 + i + stride ]; // splineVertex_k+1
var 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 */
var 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
};
var WEBGL_COMPONENT_TYPES = {
5120: Int8Array,
5121: Uint8Array,
5122: Int16Array,
5123: Uint16Array,
5125: Uint32Array,
5126: Float32Array
};
var WEBGL_FILTERS = {
9728: NearestFilter,
9729: LinearFilter,
9984: NearestMipmapNearestFilter,
9985: LinearMipmapNearestFilter,
9986: NearestMipmapLinearFilter,
9987: LinearMipmapLinearFilter
};
var WEBGL_WRAPPINGS = {
33071: ClampToEdgeWrapping,
33648: MirroredRepeatWrapping,
10497: RepeatWrapping
};
var WEBGL_TYPE_SIZES = {
'SCALAR': 1,
'VEC2': 2,
'VEC3': 3,
'VEC4': 4,
'MAT2': 4,
'MAT3': 9,
'MAT4': 16
};
var ATTRIBUTES = {
POSITION: 'position',
NORMAL: 'normal',
TANGENT: 'tangent',
TEXCOORD_0: 'uv',
TEXCOORD_1: 'uv2',
COLOR_0: 'color',
WEIGHTS_0: 'skinWeight',
JOINTS_0: 'skinIndex',
};
var PATH_PROPERTIES = {
scale: 'scale',
translation: 'position',
rotation: 'quaternion',
weights: 'morphTargetInfluences'
};
var 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
};
var ALPHA_MODES = {
OPAQUE: 'OPAQUE',
MASK: 'MASK',
BLEND: 'BLEND'
};
var MIME_TYPE_FORMATS = {
'image/png': RGBAFormat,
'image/jpeg': RGBFormat
};
/* 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 ( var 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 ) {
var hasMorphPosition = false;
var hasMorphNormal = false;
for ( var i = 0, il = targets.length; i < il; i ++ ) {
var 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 );
var pendingPositionAccessors = [];
var pendingNormalAccessors = [];
for ( var i = 0, il = targets.length; i < il; i ++ ) {
var target = targets[ i ];
if ( hasMorphPosition ) {
var pendingAccessor = target.POSITION !== undefined
? parser.getDependency( 'accessor', target.POSITION )
: geometry.attributes.position;
pendingPositionAccessors.push( pendingAccessor );
}
if ( hasMorphNormal ) {
var 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 ) {
var morphPositions = accessors[ 0 ];
var 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 ( var 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 ) ) {
var targetNames = meshDef.extras.targetNames;
if ( mesh.morphTargetInfluences.length === targetNames.length ) {
mesh.morphTargetDictionary = {};
for ( var 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 ) {
var dracoExtension = primitiveDef.extensions && primitiveDef.extensions[ EXTENSIONS.KHR_DRACO_MESH_COMPRESSION ];
var 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 ) {
var attributesKey = '';
var keys = Object.keys( attributes ).sort();
for ( var i = 0, il = keys.length; i < il; i ++ ) {
attributesKey += keys[ i ] + ':' + attributes[ keys[ i ] ] + ';';
}
return attributesKey;
}
/* GLTF PARSER */
function GLTFParser( json, extensions, options ) {
this.json = json || {};
this.extensions = extensions || {};
this.options = options || {};
// loader object cache
this.cache = new GLTFRegistry();
// BufferGeometry caching
this.primitiveCache = {};
this.textureLoader = new TextureLoader( this.options.manager );
this.textureLoader.setCrossOrigin( this.options.crossOrigin );
this.fileLoader = new FileLoader( this.options.manager );
this.fileLoader.setResponseType( 'arraybuffer' );
if ( this.options.crossOrigin === 'use-credentials' ) {
this.fileLoader.setWithCredentials( true );
}
}
GLTFParser.prototype.parse = function ( onLoad, onError ) {
var parser = this;
var json = this.json;
var extensions = this.extensions;
// Clear the loader cache
this.cache.removeAll();
// Mark the special nodes/meshes in json for efficient parse
this.markDefs();
Promise.all( [
this.getDependencies( 'scene' ),
this.getDependencies( 'animation' ),
this.getDependencies( 'camera' ),
] ).then( function ( dependencies ) {
var 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 );
onLoad( result );
} ).catch( onError );
};
/**
* Marks the special nodes/meshes in json for efficient parse.
*/
GLTFParser.prototype.markDefs = function () {
var nodeDefs = this.json.nodes || [];
var skinDefs = this.json.skins || [];
var meshDefs = this.json.meshes || [];
var meshReferences = {};
var meshUses = {};
// Nothing in the node definition indicates whether it is a Bone or an
// Object3D. Use the skins' joint references to mark bones.
for ( var skinIndex = 0, skinLength = skinDefs.length; skinIndex < skinLength; skinIndex ++ ) {
var joints = skinDefs[ skinIndex ].joints;
for ( var i = 0, il = joints.length; i < il; i ++ ) {
nodeDefs[ joints[ i ] ].isBone = true;
}
}
// Meshes can (and should) be reused by multiple nodes in a glTF asset. To
// avoid having more than one Mesh with the same name, count
// references and rename instances below.
//
// Example: CesiumMilkTruck sample model reuses "Wheel" meshes.
for ( var nodeIndex = 0, nodeLength = nodeDefs.length; nodeIndex < nodeLength; nodeIndex ++ ) {
var nodeDef = nodeDefs[ nodeIndex ];
if ( nodeDef.mesh !== undefined ) {
if ( meshReferences[ nodeDef.mesh ] === undefined ) {
meshReferences[ nodeDef.mesh ] = meshUses[ nodeDef.mesh ] = 0;
}
meshReferences[ 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;
}
}
}
this.json.meshReferences = meshReferences;
this.json.meshUses = meshUses;
};
/**
* Requests the specified dependency asynchronously, with caching.
* @param {string} type
* @param {number} index
* @return {Promise<Object3D|Material|THREE.Texture|AnimationClip|ArrayBuffer|Object>}
*/
GLTFParser.prototype.getDependency = function ( type, index ) {
var cacheKey = type + ':' + index;
var 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.loadMesh( index );
break;
case 'accessor':
dependency = this.loadAccessor( index );
break;
case 'bufferView':
dependency = this.loadBufferView( index );
break;
case 'buffer':
dependency = this.loadBuffer( index );
break;
case 'material':
dependency = this.loadMaterial( index );
break;
case 'texture':
dependency = this.loadTexture( index );
break;
case 'skin':
dependency = this.loadSkin( index );
break;
case 'animation':
dependency = this.loadAnimation( index );
break;
case 'camera':
dependency = this.loadCamera( index );
break;
case 'light':
dependency = this.extensions[ EXTENSIONS.KHR_LIGHTS_PUNCTUAL ].loadLight( 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>>}
*/
GLTFParser.prototype.getDependencies = function ( type ) {
var dependencies = this.cache.get( type );
if ( ! dependencies ) {
var parser = this;
var 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>}
*/
GLTFParser.prototype.loadBuffer = function ( bufferIndex ) {
var bufferDef = this.json.buffers[ bufferIndex ];
var 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 );
}
var 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>}
*/
GLTFParser.prototype.loadBufferView = function ( bufferViewIndex ) {
var bufferViewDef = this.json.bufferViews[ bufferViewIndex ];
return this.getDependency( 'buffer', bufferViewDef.buffer ).then( function ( buffer ) {
var byteLength = bufferViewDef.byteLength || 0;
var 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>}
*/
GLTFParser.prototype.loadAccessor = function ( accessorIndex ) {
var parser = this;
var json = this.json;
var 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 );
}
var 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 ) {
var bufferView = bufferViews[ 0 ];
var itemSize = WEBGL_TYPE_SIZES[ accessorDef.type ];
var TypedArray = WEBGL_COMPONENT_TYPES[ accessorDef.componentType ];
// For VEC3: itemSize is 3, elementBytes is 4, itemBytes is 12.
var elementBytes = TypedArray.BYTES_PER_ELEMENT;
var itemBytes = elementBytes * itemSize;
var byteOffset = accessorDef.byteOffset || 0;
var byteStride = accessorDef.bufferView !== undefined ? json.bufferViews[ accessorDef.bufferView ].byteStride : undefined;
var normalized = accessorDef.normalized === true;
var 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
var ibSlice = Math.floor( byteOffset / byteStride );
var ibCacheKey = 'InterleavedBuffer:' + accessorDef.bufferView + ':' + accessorDef.componentType + ':' + ibSlice + ':' + accessorDef.count;
var 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 ) {
var itemSizeIndices = WEBGL_TYPE_SIZES.SCALAR;
var TypedArrayIndices = WEBGL_COMPONENT_TYPES[ accessorDef.sparse.indices.componentType ];
var byteOffsetIndices = accessorDef.sparse.indices.byteOffset || 0;
var byteOffsetValues = accessorDef.sparse.values.byteOffset || 0;
var sparseIndices = new TypedArrayIndices( bufferViews[ 1 ], byteOffsetIndices, accessorDef.sparse.count * itemSizeIndices );
var 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 ( var i = 0, il = sparseIndices.length; i < il; i ++ ) {
var 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>}
*/
GLTFParser.prototype.loadTexture = function ( textureIndex ) {
var parser = this;
var json = this.json;
var options = this.options;
var textureLoader = this.textureLoader;
var URL = self.URL || self.webkitURL;
var textureDef = json.textures[ textureIndex ];
var textureExtensions = textureDef.extensions || {};
var source;
if ( textureExtensions[ EXTENSIONS.MSFT_TEXTURE_DDS ] ) {
source = json.images[ textureExtensions[ EXTENSIONS.MSFT_TEXTURE_DDS ].source ];
} else {
source = json.images[ textureDef.source ];
}
var sourceURI = source.uri;
var 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;
var blob = new Blob( [ bufferView ], { type: source.mimeType } );
sourceURI = URL.createObjectURL( blob );
return sourceURI;
} );
}
return Promise.resolve( sourceURI ).then( function ( sourceURI ) {
// Load Texture resource.
var loader = options.manager.getHandler( sourceURI );
if ( ! loader ) {
loader = textureExtensions[ EXTENSIONS.MSFT_TEXTURE_DDS ]
? parser.extensions[ EXTENSIONS.MSFT_TEXTURE_DDS ].ddsLoader
: textureLoader;
}
return new Promise( function ( resolve, reject ) {
loader.load( resolveURL( sourceURI, options.path ), resolve, 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;
// Ignore unknown mime types, like DDS files.
if ( source.mimeType in MIME_TYPE_FORMATS ) {
texture.format = MIME_TYPE_FORMATS[ source.mimeType ];
}
var samplers = json.samplers || {};
var 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;
return texture;
} );
};
/**
* Asynchronously assigns a texture to the given material parameters.
* @param {Object} materialParams
* @param {string} mapName
* @param {Object} mapDef
* @return {Promise}
*/
GLTFParser.prototype.assignTexture = function ( materialParams, mapName, mapDef ) {
var parser = this;
return this.getDependency( 'texture', mapDef.index ).then( function ( texture ) {
if ( ! texture.isCompressedTexture ) {
switch ( mapName ) {
case 'aoMap':
case 'emissiveMap':
case 'metalnessMap':
case 'normalMap':
case 'roughnessMap':
texture.format = RGBFormat;
break;
}
}
// 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 ] ) {
var transform = mapDef.extensions !== undefined ? mapDef.extensions[ EXTENSIONS.KHR_TEXTURE_TRANSFORM ] : undefined;
if ( transform ) {
texture = parser.extensions[ EXTENSIONS.KHR_TEXTURE_TRANSFORM ].extendTexture( texture, transform );
}
}
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 accomodate 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.
*/
GLTFParser.prototype.assignFinalMaterial = function ( mesh ) {
var geometry = mesh.geometry;
var material = mesh.material;
var useVertexTangents = geometry.attributes.tangent !== undefined;
var useVertexColors = geometry.attributes.color !== undefined;
var useFlatShading = geometry.attributes.normal === undefined;
var useSkinning = mesh.isSkinnedMesh === true;
var useMorphTargets = Object.keys( geometry.morphAttributes ).length > 0;
var useMorphNormals = useMorphTargets && geometry.morphAttributes.normal !== undefined;
if ( mesh.isPoints ) {
var cacheKey = 'PointsMaterial:' + material.uuid;
var 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 ) {
var cacheKey = 'LineBasicMaterial:' + material.uuid;
var 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 || useSkinning || useMorphTargets ) {
var cacheKey = 'ClonedMaterial:' + material.uuid + ':';
if ( material.isGLTFSpecularGlossinessMaterial ) cacheKey += 'specular-glossiness:';
if ( useSkinning ) cacheKey += 'skinning:';
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:';
var cachedMaterial = this.cache.get( cacheKey );
if ( ! cachedMaterial ) {
cachedMaterial = material.clone();
if ( useSkinning ) cachedMaterial.skinning = true;
if ( useVertexTangents ) cachedMaterial.vertexTangents = true;
if ( useVertexColors ) cachedMaterial.vertexColors = true;
if ( useFlatShading ) cachedMaterial.flatShading = true;
if ( useMorphTargets ) cachedMaterial.morphTargets = true;
if ( useMorphNormals ) cachedMaterial.morphNormals = true;
this.cache.add( cacheKey, cachedMaterial );
}
material = cachedMaterial;
}
// workarounds for mesh and geometry
if ( material.aoMap && geometry.attributes.uv2 === undefined && geometry.attributes.uv !== undefined ) {
geometry.setAttribute( 'uv2', new BufferAttribute( geometry.attributes.uv.array, 2 ) );
}
// https://github.com/mrdoob/three.js/issues/11438#issuecomment-507003995
if ( material.normalScale && ! useVertexTangents ) {
material.normalScale.y = - material.normalScale.y;
}
if ( material.clearcoatNormalScale && ! useVertexTangents ) {
material.clearcoatNormalScale.y = - material.clearcoatNormalScale.y;
}
mesh.material = material;
};
/**
* Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#materials
* @param {number} materialIndex
* @return {Promise<Material>}
*/
GLTFParser.prototype.loadMaterial = function ( materialIndex ) {
var parser = this;
var json = this.json;
var extensions = this.extensions;
var materialDef = json.materials[ materialIndex ];
var materialType;
var materialParams = {};
var materialExtensions = materialDef.extensions || {};
var pending = [];
if ( materialExtensions[ EXTENSIONS.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS ] ) {
var 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 ] ) {
var 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
materialType = MeshStandardMaterial;
var metallicRoughness = materialDef.pbrMetallicRoughness || {};
materialParams.color = new Color( 1.0, 1.0, 1.0 );
materialParams.opacity = 1.0;
if ( Array.isArray( metallicRoughness.baseColorFactor ) ) {
var 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 ) );
}
}
if ( materialDef.doubleSided === true ) {
materialParams.side = DoubleSide;
}
var 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 ) );
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 ) );
}
if ( materialExtensions[ EXTENSIONS.KHR_MATERIALS_CLEARCOAT ] ) {
var clearcoatExtension = extensions[ EXTENSIONS.KHR_MATERIALS_CLEARCOAT ];
materialType = clearcoatExtension.getMaterialType();
pending.push( clearcoatExtension.extendParams( materialParams, { extensions: materialExtensions }, parser ) );
}
return Promise.all( pending ).then( function () {
var 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 );
if ( materialDef.extensions ) addUnknownExtensionsToUserData( extensions, material, materialDef );
return material;
} );
};
/**
* @param {BufferGeometry} geometry
* @param {GLTF.Primitive} primitiveDef
* @param {GLTFParser} parser
*/
function computeBounds( geometry, primitiveDef, parser ) {
var attributes = primitiveDef.attributes;
var box = new Box3();
if ( attributes.POSITION !== undefined ) {
var accessor = parser.json.accessors[ attributes.POSITION ];
var min = accessor.min;
var 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 ] ) );
} else {
console.warn( 'THREE.GLTFLoader: Missing min/max properties for accessor POSITION.' );
return;
}
} else {
return;
}
var targets = primitiveDef.targets;
if ( targets !== undefined ) {
var maxDisplacement = new Vector3();
var vector = new Vector3();
for ( var i = 0, il = targets.length; i < il; i ++ ) {
var target = targets[ i ];
if ( target.POSITION !== undefined ) {
var accessor = parser.json.accessors[ target.POSITION ];
var min = accessor.min;
var 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 ] ) ) );
// 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;
var 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 ) {
var attributes = primitiveDef.attributes;
var pending = [];
function assignAttributeAccessor( accessorIndex, attributeName ) {
return parser.getDependency( 'accessor', accessorIndex )
.then( function ( accessor ) {
geometry.setAttribute( attributeName, accessor );
} );
}
for ( var gltfAttributeName in attributes ) {
var 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 ) {
var 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 ) {
var index = geometry.getIndex();
// generate index if not present
if ( index === null ) {
var indices = [];
var position = geometry.getAttribute( 'position' );
if ( position !== undefined ) {
for ( var 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;
}
}
//
var numberOfTriangles = index.count - 2;
var newIndices = [];
if ( drawMode === TriangleFanDrawMode ) {
// gl.TRIANGLE_FAN
for ( var 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 ( var 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
var newGeometry = geometry.clone();
newGeometry.setIndex( newIndices );
return newGeometry;
}
/**
* 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>>}
*/
GLTFParser.prototype.loadGeometries = function ( primitives ) {
var parser = this;
var extensions = this.extensions;
var cache = this.primitiveCache;
function createDracoPrimitive( primitive ) {
return extensions[ EXTENSIONS.KHR_DRACO_MESH_COMPRESSION ]
.decodePrimitive( primitive, parser )
.then( function ( geometry ) {
return addPrimitiveAttributes( geometry, primitive, parser );
} );
}
var pending = [];
for ( var i = 0, il = primitives.length; i < il; i ++ ) {
var primitive = primitives[ i ];
var cacheKey = createPrimitiveKey( primitive );
// See if we've already created this geometry
var cached = cache[ cacheKey ];
if ( cached ) {
// Use the cached geometry if it exists
pending.push( cached.promise );
} else {
var 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>}
*/
GLTFParser.prototype.loadMesh = function ( meshIndex ) {
var parser = this;
var json = this.json;
var meshDef = json.meshes[ meshIndex ];
var primitives = meshDef.primitives;
var pending = [];
for ( var i = 0, il = primitives.length; i < il; i ++ ) {
var 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 ) {
var materials = results.slice( 0, results.length - 1 );
var geometries = results[ results.length - 1 ];
var meshes = [];
for ( var i = 0, il = geometries.length; i < il; i ++ ) {
var geometry = geometries[ i ];
var primitive = primitives[ i ];
// 1. create Mesh
var mesh;
var 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 = meshDef.name || ( 'mesh_' + meshIndex );
if ( geometries.length > 1 ) mesh.name += '_' + i;
assignExtrasToUserData( mesh, meshDef );
parser.assignFinalMaterial( mesh );
meshes.push( mesh );
}
if ( meshes.length === 1 ) {
return meshes[ 0 ];
}
var group = new Group();
for ( var 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>}
*/
GLTFParser.prototype.loadCamera = function ( cameraIndex ) {
var camera;
var cameraDef = this.json.cameras[ cameraIndex ];
var 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 / - 2, params.xmag / 2, params.ymag / 2, params.ymag / - 2, params.znear, params.zfar );
}
if ( cameraDef.name ) camera.name = 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>}
*/
GLTFParser.prototype.loadSkin = function ( skinIndex ) {
var skinDef = this.json.skins[ skinIndex ];
var 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>}
*/
GLTFParser.prototype.loadAnimation = function ( animationIndex ) {
var json = this.json;
var animationDef = json.animations[ animationIndex ];
var pendingNodes = [];
var pendingInputAccessors = [];
var pendingOutputAccessors = [];
var pendingSamplers = [];
var pendingTargets = [];
for ( var i = 0, il = animationDef.channels.length; i < il; i ++ ) {
var channel = animationDef.channels[ i ];
var sampler = animationDef.samplers[ channel.sampler ];
var target = channel.target;
var name = target.node !== undefined ? target.node : target.id; // NOTE: target.id is deprecated.
var input = animationDef.parameters !== undefined ? animationDef.parameters[ sampler.input ] : sampler.input;
var 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 ) {
var nodes = dependencies[ 0 ];
var inputAccessors = dependencies[ 1 ];
var outputAccessors = dependencies[ 2 ];
var samplers = dependencies[ 3 ];
var targets = dependencies[ 4 ];
var tracks = [];
for ( var i = 0, il = nodes.length; i < il; i ++ ) {
var node = nodes[ i ];
var inputAccessor = inputAccessors[ i ];
var outputAccessor = outputAccessors[ i ];
var sampler = samplers[ i ];
var target = targets[ i ];
if ( node === undefined ) continue;
node.updateMatrix();
node.matrixAutoUpdate = true;
var 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;
}
var targetName = node.name ? node.name : node.uuid;
var interpolation = sampler.interpolation !== undefined ? INTERPOLATION[ sampler.interpolation ] : InterpolateLinear;
var 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 );
}
var outputArray = outputAccessor.array;
if ( outputAccessor.normalized ) {
var scale;
if ( outputArray.constructor === Int8Array ) {
scale = 1 / 127;
} else if ( outputArray.constructor === Uint8Array ) {
scale = 1 / 255;
} else if ( outputArray.constructor == Int16Array ) {
scale = 1 / 32767;
} else if ( outputArray.constructor === Uint16Array ) {
scale = 1 / 65535;
} else {
throw new Error( 'THREE.GLTFLoader: Unsupported output accessor component type.' );
}
var scaled = new Float32Array( outputArray.length );
for ( var j = 0, jl = outputArray.length; j < jl; j ++ ) {
scaled[ j ] = outputArray[ j ] * scale;
}
outputArray = scaled;
}
for ( var j = 0, jl = targetNames.length; j < jl; j ++ ) {
var 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 );
}
}
var name = animationDef.name ? animationDef.name : 'animation_' + animationIndex;
return new AnimationClip( name, undefined, tracks );
} );
};
/**
* Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#nodes-and-hierarchy
* @param {number} nodeIndex
* @return {Promise<Object3D>}
*/
GLTFParser.prototype.loadNode = function ( nodeIndex ) {
var json = this.json;
var extensions = this.extensions;
var parser = this;
var meshReferences = json.meshReferences;
var meshUses = json.meshUses;
var nodeDef = json.nodes[ nodeIndex ];
return ( function () {
var pending = [];
if ( nodeDef.mesh !== undefined ) {
pending.push( parser.getDependency( 'mesh', nodeDef.mesh ).then( function ( mesh ) {
var node;
if ( meshReferences[ nodeDef.mesh ] > 1 ) {
var instanceNum = meshUses[ nodeDef.mesh ] ++;
node = mesh.clone();
node.name += '_instance_' + instanceNum;
} else {
node = 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 ( var i = 0, il = nodeDef.weights.length; i < il; i ++ ) {
o.morphTargetInfluences[ i ] = nodeDef.weights[ i ];
}
} );
}
return node;
} ) );
}
if ( nodeDef.camera !== undefined ) {
pending.push( parser.getDependency( 'camera', nodeDef.camera ) );
}
if ( nodeDef.extensions
&& nodeDef.extensions[ EXTENSIONS.KHR_LIGHTS_PUNCTUAL ]
&& nodeDef.extensions[ EXTENSIONS.KHR_LIGHTS_PUNCTUAL ].light !== undefined ) {
pending.push( parser.getDependency( 'light', nodeDef.extensions[ EXTENSIONS.KHR_LIGHTS_PUNCTUAL ].light ) );
}
return Promise.all( pending );
}() ).then( function ( objects ) {
var 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 ( var i = 0, il = objects.length; i < il; i ++ ) {
node.add( objects[ i ] );
}
}
if ( nodeDef.name ) {
node.userData.name = nodeDef.name;
node.name = PropertyBinding.sanitizeNodeName( nodeDef.name );
}
assignExtrasToUserData( node, nodeDef );
if ( nodeDef.extensions ) addUnknownExtensionsToUserData( extensions, node, nodeDef );
if ( nodeDef.matrix !== undefined ) {
var 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 );
}
}
return node;
} );
};
/**
* Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#scenes
* @param {number} sceneIndex
* @return {Promise<Group>}
*/
GLTFParser.prototype.loadScene = function () {
// scene node hierachy builder
function buildNodeHierachy( nodeId, parentObject, json, parser ) {
var nodeDef = json.nodes[ nodeId ];
return parser.getDependency( 'node', nodeId ).then( function ( node ) {
if ( nodeDef.skin === undefined ) return node;
// build skeleton here as well
var skinEntry;
return parser.getDependency( 'skin', nodeDef.skin ).then( function ( skin ) {
skinEntry = skin;
var pendingJoints = [];
for ( var 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;
var bones = [];
var boneInverses = [];
for ( var j = 0, jl = jointNodes.length; j < jl; j ++ ) {
var jointNode = jointNodes[ j ];
if ( jointNode ) {
bones.push( jointNode );
var 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 );
var pending = [];
if ( nodeDef.children ) {
var children = nodeDef.children;
for ( var i = 0, il = children.length; i < il; i ++ ) {
var child = children[ i ];
pending.push( buildNodeHierachy( child, node, json, parser ) );
}
}
return Promise.all( pending );
} );
}
return function loadScene( sceneIndex ) {
var json = this.json;
var extensions = this.extensions;
var sceneDef = this.json.scenes[ sceneIndex ];
var parser = this;
// Loader returns Group, not Scene.
// See: https://github.com/mrdoob/three.js/issues/18342#issuecomment-578981172
var scene = new Group();
if ( sceneDef.name ) scene.name = sceneDef.name;
assignExtrasToUserData( scene, sceneDef );
if ( sceneDef.extensions ) addUnknownExtensionsToUserData( extensions, scene, sceneDef );
var nodeIds = sceneDef.nodes || [];
var pending = [];
for ( var i = 0, il = nodeIds.length; i < il; i ++ ) {
pending.push( buildNodeHierachy( nodeIds[ i ], scene, json, parser ) );
}
return Promise.all( pending ).then( function () {
return scene;
} );
};
}();
return GLTFLoader;
} )()
