arser.createUniqueName( lightDef.name || 'light_' + lightIndex ); dependency = Promise.resolve( lightNode ); parser.cache.add( cacheKey, dependency ); return dependency; } createNodeAttachment( nodeIndex ) { const self = this; const parser = this.parser; const json = parser.json; const nodeDef = json.nodes[ nodeIndex ]; const lightDef = nodeDef.extensions && nodeDef.extensions[ this.name ] || {}; const lightIndex = lightDef.light; if ( lightIndex === undefined ) return null; return this._loadLight( lightIndex ).then( function ( light ) { return parser._getNodeRef( self.cache, lightIndex, light ); } ); } } /** * Unlit Materials Extension * * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_unlit */ class GLTFMaterialsUnlitExtension { constructor() { this.name = EXTENSIONS.KHR_MATERIALS_UNLIT; } getMaterialType() { return THREE.MeshBasicMaterial; } extendParams( materialParams, materialDef, parser ) { const pending = []; materialParams.color = new THREE.Color( 1.0, 1.0, 1.0 ); materialParams.opacity = 1.0; const metallicRoughness = materialDef.pbrMetallicRoughness; if ( metallicRoughness ) { if ( Array.isArray( metallicRoughness.baseColorFactor ) ) { const array = metallicRoughness.baseColorFactor; materialParams.color.fromArray( array ); materialParams.opacity = array[ 3 ]; } if ( metallicRoughness.baseColorTexture !== undefined ) { pending.push( parser.assignTexture( materialParams, 'map', metallicRoughness.baseColorTexture ) ); } } return Promise.all( pending ); } } /** * Clearcoat Materials Extension * * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_clearcoat */ class GLTFMaterialsClearcoatExtension { constructor( parser ) { this.parser = parser; this.name = EXTENSIONS.KHR_MATERIALS_CLEARCOAT; } getMaterialType( materialIndex ) { const parser = this.parser; const materialDef = parser.json.materials[ materialIndex ]; if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) return null; return THREE.MeshPhysicalMaterial; } extendMaterialParams( materialIndex, materialParams ) { const parser = this.parser; const materialDef = parser.json.materials[ materialIndex ]; if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) { return Promise.resolve(); } const pending = []; const extension = materialDef.extensions[ this.name ]; if ( extension.clearcoatFactor !== undefined ) { materialParams.clearcoat = extension.clearcoatFactor; } if ( extension.clearcoatTexture !== undefined ) { pending.push( parser.assignTexture( materialParams, 'clearcoatMap', extension.clearcoatTexture ) ); } if ( extension.clearcoatRoughnessFactor !== undefined ) { materialParams.clearcoatRoughness = extension.clearcoatRoughnessFactor; } if ( extension.clearcoatRoughnessTexture !== undefined ) { pending.push( parser.assignTexture( materialParams, 'clearcoatRoughnessMap', extension.clearcoatRoughnessTexture ) ); } if ( extension.clearcoatNormalTexture !== undefined ) { pending.push( parser.assignTexture( materialParams, 'clearcoatNormalMap', extension.clearcoatNormalTexture ) ); if ( extension.clearcoatNormalTexture.scale !== undefined ) { const scale = extension.clearcoatNormalTexture.scale; // https://github.com/mrdoob/three.js/issues/11438#issuecomment-507003995 materialParams.clearcoatNormalScale = new THREE.Vector2( scale, - scale ); } } return Promise.all( pending ); } } /** * Transmission Materials Extension * * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_transmission * Draft: https://github.com/KhronosGroup/glTF/pull/1698 */ class GLTFMaterialsTransmissionExtension { constructor( parser ) { this.parser = parser; this.name = EXTENSIONS.KHR_MATERIALS_TRANSMISSION; } getMaterialType( materialIndex ) { const parser = this.parser; const materialDef = parser.json.materials[ materialIndex ]; if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) return null; return THREE.MeshPhysicalMaterial; } extendMaterialParams( materialIndex, materialParams ) { const parser = this.parser; const materialDef = parser.json.materials[ materialIndex ]; if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) { return Promise.resolve(); } const pending = []; const extension = materialDef.extensions[ this.name ]; if ( extension.transmissionFactor !== undefined ) { materialParams.transmission = extension.transmissionFactor; } if ( extension.transmissionTexture !== undefined ) { pend