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td_official/public/sdk/three/jsm/loaders/3MFLoader.js

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最新代码
2025-07-29 11:22:30 +08:00
import {
BufferAttribute,
BufferGeometry,
ClampToEdgeWrapping,
Color,
FileLoader,
Float32BufferAttribute,
Group,
LinearFilter,
LinearMipmapLinearFilter,
Loader,
Matrix4,
Mesh,
MeshPhongMaterial,
MeshStandardMaterial,
MirroredRepeatWrapping,
NearestFilter,
RepeatWrapping,
TextureLoader,
SRGBColorSpace
} from 'three';
import * as fflate from '../libs/fflate.module.js';
const COLOR_SPACE_3MF = SRGBColorSpace;
/**
*
* 3D Manufacturing Format (3MF) specification: https://3mf.io/specification/
*
* The following features from the core specification are supported:
*
* - 3D Models
* - Object Resources (Meshes and Components)
* - Material Resources (Base Materials)
*
* 3MF Materials and Properties Extension are only partially supported.
*
* - Texture 2D
* - Texture 2D Groups
* - Color Groups (Vertex Colors)
* - Metallic Display Properties (PBR)
*/
class ThreeMFLoader extends Loader {
constructor( manager ) {
super( manager );
this.availableExtensions = [];
}
load( url, onLoad, onProgress, onError ) {
const scope = this;
const loader = new FileLoader( scope.manager );
loader.setPath( scope.path );
loader.setResponseType( 'arraybuffer' );
loader.setRequestHeader( scope.requestHeader );
loader.setWithCredentials( scope.withCredentials );
loader.load( url, function ( buffer ) {
try {
onLoad( scope.parse( buffer ) );
} catch ( e ) {
if ( onError ) {
onError( e );
} else {
console.error( e );
}
scope.manager.itemError( url );
}
}, onProgress, onError );
}
parse( data ) {
const scope = this;
const textureLoader = new TextureLoader( this.manager );
function loadDocument( data ) {
let zip = null;
let file = null;
let relsName;
let modelRelsName;
const modelPartNames = [];
const texturesPartNames = [];
let modelRels;
const modelParts = {};
const printTicketParts = {};
const texturesParts = {};
const textDecoder = new TextDecoder();
try {
zip = fflate.unzipSync( new Uint8Array( data ) );
} catch ( e ) {
if ( e instanceof ReferenceError ) {
console.error( 'THREE.3MFLoader: fflate missing and file is compressed.' );
return null;
}
}
for ( file in zip ) {
if ( file.match( /\_rels\/.rels$/ ) ) {
relsName = file;
} else if ( file.match( /3D\/_rels\/.*\.model\.rels$/ ) ) {
modelRelsName = file;
} else if ( file.match( /^3D\/.*\.model$/ ) ) {
modelPartNames.push( file );
} else if ( file.match( /^3D\/Textures?\/.*/ ) ) {
texturesPartNames.push( file );
}
}
if ( relsName === undefined ) throw new Error( 'THREE.ThreeMFLoader: Cannot find relationship file `rels` in 3MF archive.' );
//
const relsView = zip[ relsName ];
const relsFileText = textDecoder.decode( relsView );
const rels = parseRelsXml( relsFileText );
//
if ( modelRelsName ) {
const relsView = zip[ modelRelsName ];
const relsFileText = textDecoder.decode( relsView );
modelRels = parseRelsXml( relsFileText );
}
//
for ( let i = 0; i < modelPartNames.length; i ++ ) {
const modelPart = modelPartNames[ i ];
const view = zip[ modelPart ];
const fileText = textDecoder.decode( view );
const xmlData = new DOMParser().parseFromString( fileText, 'application/xml' );
if ( xmlData.documentElement.nodeName.toLowerCase() !== 'model' ) {
console.error( 'THREE.3MFLoader: Error loading 3MF - no 3MF document found: ', modelPart );
}
const modelNode = xmlData.querySelector( 'model' );
const extensions = {};
for ( let i = 0; i < modelNode.attributes.length; i ++ ) {
const attr = modelNode.attributes[ i ];
if ( attr.name.match( /^xmlns:(.+)$/ ) ) {
extensions[ attr.value ] = RegExp.$1;
}
}
const modelData = parseModelNode( modelNode );
modelData[ 'xml' ] = modelNode;
if ( 0 < Object.keys( extensions ).length ) {
modelData[ 'extensions' ] = extensions;
}
modelParts[ modelPart ] = modelData;
}
//
for ( let i = 0; i < texturesPartNames.length; i ++ ) {
const texturesPartName = texturesPartNames[ i ];
texturesParts[ texturesPartName ] = zip[ texturesPartName ].buffer;
}
return {
rels: rels,
modelRels: modelRels,
model: modelParts,
printTicket: printTicketParts,
texture: texturesParts
};
}
function parseRelsXml( relsFileText ) {
const relationships = [];
const relsXmlData = new DOMParser().parseFromString( relsFileText, 'application/xml' );
const relsNodes = relsXmlData.querySelectorAll( 'Relationship' );
for ( let i = 0; i < relsNodes.length; i ++ ) {
const relsNode = relsNodes[ i ];
const relationship = {
target: relsNode.getAttribute( 'Target' ), //required
id: relsNode.getAttribute( 'Id' ), //required
type: relsNode.getAttribute( 'Type' ) //required
};
relationships.push( relationship );
}
return relationships;
}
function parseMetadataNodes( metadataNodes ) {
const metadataData = {};
for ( let i = 0; i < metadataNodes.length; i ++ ) {
const metadataNode = metadataNodes[ i ];
const name = metadataNode.getAttribute( 'name' );
const validNames = [
'Title',
'Designer',
'Description',
'Copyright',
'LicenseTerms',
'Rating',
'CreationDate',
'ModificationDate'
];
if ( 0 <= validNames.indexOf( name ) ) {
metadataData[ name ] = metadataNode.textContent;
}
}
return metadataData;
}
function parseBasematerialsNode( basematerialsNode ) {
const basematerialsData = {
id: basematerialsNode.getAttribute( 'id' ), // required
basematerials: []
};
const basematerialNodes = basematerialsNode.querySelectorAll( 'base' );
for ( let i = 0; i < basematerialNodes.length; i ++ ) {
const basematerialNode = basematerialNodes[ i ];
const basematerialData = parseBasematerialNode( basematerialNode );
basematerialData.index = i; // the order and count of the material nodes form an implicit 0-based index
basematerialsData.basematerials.push( basematerialData );
}
return basematerialsData;
}
function parseTexture2DNode( texture2DNode ) {
const texture2dData = {
id: texture2DNode.getAttribute( 'id' ), // required
path: texture2DNode.getAttribute( 'path' ), // required
contenttype: texture2DNode.getAttribute( 'contenttype' ), // required
tilestyleu: texture2DNode.getAttribute( 'tilestyleu' ),
tilestylev: texture2DNode.getAttribute( 'tilestylev' ),
filter: texture2DNode.getAttribute( 'filter' ),
};
return texture2dData;
}
function parseTextures2DGroupNode( texture2DGroupNode ) {
const texture2DGroupData = {
id: texture2DGroupNode.getAttribute( 'id' ), // required
texid: texture2DGroupNode.getAttribute( 'texid' ), // required
displaypropertiesid: texture2DGroupNode.getAttribute( 'displaypropertiesid' )
};
const tex2coordNodes = texture2DGroupNode.querySelectorAll( 'tex2coord' );
const uvs = [];
for ( let i = 0; i < tex2coordNodes.length; i ++ ) {
const tex2coordNode = tex2coordNodes[ i ];
const u = tex2coordNode.getAttribute( 'u' );
const v = tex2coordNode.getAttribute( 'v' );
uvs.push( parseFloat( u ), parseFloat( v ) );
}
texture2DGroupData[ 'uvs' ] = new Float32Array( uvs );
return texture2DGroupData;
}
function parseColorGroupNode( colorGroupNode ) {
const colorGroupData = {
id: colorGroupNode.getAttribute( 'id' ), // required
displaypropertiesid: colorGroupNode.getAttribute( 'displaypropertiesid' )
};
const colorNodes = colorGroupNode.querySelectorAll( 'color' );
const colors = [];
const colorObject = new Color();
for ( let i = 0; i < colorNodes.length; i ++ ) {
const colorNode = colorNodes[ i ];
const color = colorNode.getAttribute( 'color' );
colorObject.setStyle( color.substring( 0, 7 ), COLOR_SPACE_3MF );
colors.push( colorObject.r, colorObject.g, colorObject.b );
}
colorGroupData[ 'colors' ] = new Float32Array( colors );
return colorGroupData;
}
function parseMetallicDisplaypropertiesNode( metallicDisplaypropetiesNode ) {
const metallicDisplaypropertiesData = {
id: metallicDisplaypropetiesNode.getAttribute( 'id' ) // required
};
const metallicNodes = metallicDisplaypropetiesNode.querySelectorAll( 'pbmetallic' );
const metallicData = [];
for ( let i = 0; i < metallicNodes.length; i ++ ) {
const metallicNode = metallicNodes[ i ];
metallicData.push( {
name: metallicNode.getAttribute( 'name' ), // required
metallicness: parseFloat( metallicNode.getAttribute( 'metallicness' ) ), // required
roughness: parseFloat( metallicNode.getAttribute( 'roughness' ) ) // required
} );
}
metallicDisplaypropertiesData.data = metallicData;
return metallicDisplaypropertiesData;
}
function parseBasematerialNode( basematerialNode ) {
const basematerialData = {};
basematerialData[ 'name' ] = basematerialNode.getAttribute( 'name' ); // required
basematerialData[ 'displaycolor' ] = basematerialNode.getAttribute( 'displaycolor' ); // required
basematerialData[ 'displaypropertiesid' ] = basematerialNode.getAttribute( 'displaypropertiesid' );
return basematerialData;
}
function parseMeshNode( meshNode ) {
const meshData = {};
const vertices = [];
const vertexNodes = meshNode.querySelectorAll( 'vertices vertex' );
for ( let i = 0; i < vertexNodes.length; i ++ ) {
const vertexNode = vertexNodes[ i ];
const x = vertexNode.getAttribute( 'x' );
const y = vertexNode.getAttribute( 'y' );
const z = vertexNode.getAttribute( 'z' );
vertices.push( parseFloat( x ), parseFloat( y ), parseFloat( z ) );
}
meshData[ 'vertices' ] = new Float32Array( vertices );
const triangleProperties = [];
const triangles = [];
const triangleNodes = meshNode.querySelectorAll( 'triangles triangle' );
for ( let i = 0; i < triangleNodes.length; i ++ ) {
const triangleNode = triangleNodes[ i ];
const v1 = triangleNode.getAttribute( 'v1' );
const v2 = triangleNode.getAttribute( 'v2' );
const v3 = triangleNode.getAttribute( 'v3' );
const p1 = triangleNode.getAttribute( 'p1' );
const p2 = triangleNode.getAttribute( 'p2' );
const p3 = triangleNode.getAttribute( 'p3' );
const pid = triangleNode.getAttribute( 'pid' );
const triangleProperty = {};
triangleProperty[ 'v1' ] = parseInt( v1, 10 );
triangleProperty[ 'v2' ] = parseInt( v2, 10 );
triangleProperty[ 'v3' ] = parseInt( v3, 10 );
triangles.push( triangleProperty[ 'v1' ], triangleProperty[ 'v2' ], triangleProperty[ 'v3' ] );
// optional
if ( p1 ) {
triangleProperty[ 'p1' ] = parseInt( p1, 10 );
}
if ( p2 ) {
triangleProperty[ 'p2' ] = parseInt( p2, 10 );
}
if ( p3 ) {
triangleProperty[ 'p3' ] = parseInt( p3, 10 );
}
if ( pid ) {
triangleProperty[ 'pid' ] = pid;
}
if ( 0 < Object.keys( triangleProperty ).length ) {
triangleProperties.push( triangleProperty );
}
}
meshData[ 'triangleProperties' ] = triangleProperties;
meshData[ 'triangles' ] = new Uint32Array( triangles );
return meshData;
}
function parseComponentsNode( componentsNode ) {
const components = [];
const componentNodes = componentsNode.querySelectorAll( 'component' );
for ( let i = 0; i < componentNodes.length; i ++ ) {
const componentNode = componentNodes[ i ];
const componentData = parseComponentNode( componentNode );
components.push( componentData );
}
return components;
}
function parseComponentNode( componentNode ) {
const componentData = {};
componentData[ 'objectId' ] = componentNode.getAttribute( 'objectid' ); // required
const transform = componentNode.getAttribute( 'transform' );
if ( transform ) {
componentData[ 'transform' ] = parseTransform( transform );
}
return componentData;
}
function parseTransform( transform ) {
const t = [];
transform.split( ' ' ).forEach( function ( s ) {
t.push( parseFloat( s ) );
} );
const matrix = new Matrix4();
matrix.set(
t[ 0 ], t[ 3 ], t[ 6 ], t[ 9 ],
t[ 1 ], t[ 4 ], t[ 7 ], t[ 10 ],
t[ 2 ], t[ 5 ], t[ 8 ], t[ 11 ],
0.0, 0.0, 0.0, 1.0
);
return matrix;
}
function parseObjectNode( objectNode ) {
const objectData = {
type: objectNode.getAttribute( 'type' )
};
const id = objectNode.getAttribute( 'id' );
if ( id ) {
objectData[ 'id' ] = id;
}
const pid = objectNode.getAttribute( 'pid' );
if ( pid ) {
objectData[ 'pid' ] = pid;
}
const pindex = objectNode.getAttribute( 'pindex' );
if ( pindex ) {
objectData[ 'pindex' ] = pindex;
}
const thumbnail = objectNode.getAttribute( 'thumbnail' );
if ( thumbnail ) {
objectData[ 'thumbnail' ] = thumbnail;
}
const partnumber = objectNode.getAttribute( 'partnumber' );
if ( partnumber ) {
objectData[ 'partnumber' ] = partnumber;
}
const name = objectNode.getAttribute( 'name' );
if ( name ) {
objectData[ 'name' ] = name;
}
const meshNode = objectNode.querySelector( 'mesh' );
if ( meshNode ) {
objectData[ 'mesh' ] = parseMeshNode( meshNode );
}
const componentsNode = objectNode.querySelector( 'components' );
if ( componentsNode ) {
objectData[ 'components' ] = parseComponentsNode( componentsNode );
}
return objectData;
}
function parseResourcesNode( resourcesNode ) {
const resourcesData = {};
resourcesData[ 'basematerials' ] = {};
const basematerialsNodes = resourcesNode.querySelectorAll( 'basematerials' );
for ( let i = 0; i < basematerialsNodes.length; i ++ ) {
const basematerialsNode = basematerialsNodes[ i ];
const basematerialsData = parseBasematerialsNode( basematerialsNode );
resourcesData[ 'basematerials' ][ basematerialsData[ 'id' ] ] = basematerialsData;
}
//
resourcesData[ 'texture2d' ] = {};
const textures2DNodes = resourcesNode.querySelectorAll( 'texture2d' );
for ( let i = 0; i < textures2DNodes.length; i ++ ) {
const textures2DNode = textures2DNodes[ i ];
const texture2DData = parseTexture2DNode( textures2DNode );
resourcesData[ 'texture2d' ][ texture2DData[ 'id' ] ] = texture2DData;
}
//
resourcesData[ 'colorgroup' ] = {};
const colorGroupNodes = resourcesNode.querySelectorAll( 'colorgroup' );
for ( let i = 0; i < colorGroupNodes.length; i ++ ) {
const colorGroupNode = colorGroupNodes[ i ];
const colorGroupData = parseColorGroupNode( colorGroupNode );
resourcesData[ 'colorgroup' ][ colorGroupData[ 'id' ] ] = colorGroupData;
}
//
resourcesData[ 'pbmetallicdisplayproperties' ] = {};
const pbmetallicdisplaypropertiesNodes = resourcesNode.querySelectorAll( 'pbmetallicdisplayproperties' );
for ( let i = 0; i < pbmetallicdisplaypropertiesNodes.length; i ++ ) {
const pbmetallicdisplaypropertiesNode = pbmetallicdisplaypropertiesNodes[ i ];
const pbmetallicdisplaypropertiesData = parseMetallicDisplaypropertiesNode( pbmetallicdisplaypropertiesNode );
resourcesData[ 'pbmetallicdisplayproperties' ][ pbmetallicdisplaypropertiesData[ 'id' ] ] = pbmetallicdisplaypropertiesData;
}
//
resourcesData[ 'texture2dgroup' ] = {};
const textures2DGroupNodes = resourcesNode.querySelectorAll( 'texture2dgroup' );
for ( let i = 0; i < textures2DGroupNodes.length; i ++ ) {
const textures2DGroupNode = textures2DGroupNodes[ i ];
const textures2DGroupData = parseTextures2DGroupNode( textures2DGroupNode );
resourcesData[ 'texture2dgroup' ][ textures2DGroupData[ 'id' ] ] = textures2DGroupData;
}
//
resourcesData[ 'object' ] = {};
const objectNodes = resourcesNode.querySelectorAll( 'object' );
for ( let i = 0; i < objectNodes.length; i ++ ) {
const objectNode = objectNodes[ i ];
const objectData = parseObjectNode( objectNode );
resourcesData[ 'object' ][ objectData[ 'id' ] ] = objectData;
}
return resourcesData;
}
function parseBuildNode( buildNode ) {
const buildData = [];
const itemNodes = buildNode.querySelectorAll( 'item' );
for ( let i = 0; i < itemNodes.length; i ++ ) {
const itemNode = itemNodes[ i ];
const buildItem = {
objectId: itemNode.getAttribute( 'objectid' )
};
const transform = itemNode.getAttribute( 'transform' );
if ( transform ) {
buildItem[ 'transform' ] = parseTransform( transform );
}
buildData.push( buildItem );
}
return buildData;
}
function parseModelNode( modelNode ) {
const modelData = { unit: modelNode.getAttribute( 'unit' ) || 'millimeter' };
const metadataNodes = modelNode.querySelectorAll( 'metadata' );
if ( metadataNodes ) {
modelData[ 'metadata' ] = parseMetadataNodes( metadataNodes );
}
const resourcesNode = modelNode.querySelector( 'resources' );
if ( resourcesNode ) {
modelData[ 'resources' ] = parseResourcesNode( resourcesNode );
}
const buildNode = modelNode.querySelector( 'build' );
if ( buildNode ) {
modelData[ 'build' ] = parseBuildNode( buildNode );
}
return modelData;
}
function buildTexture( texture2dgroup, objects, modelData, textureData ) {
const texid = texture2dgroup.texid;
const texture2ds = modelData.resources.texture2d;
const texture2d = texture2ds[ texid ];
if ( texture2d ) {
const data = textureData[ texture2d.path ];
const type = texture2d.contenttype;
const blob = new Blob( [ data ], { type: type } );
const sourceURI = URL.createObjectURL( blob );
const texture = textureLoader.load( sourceURI, function () {
URL.revokeObjectURL( sourceURI );
} );
texture.colorSpace = COLOR_SPACE_3MF;
// texture parameters
switch ( texture2d.tilestyleu ) {
case 'wrap':
texture.wrapS = RepeatWrapping;
break;
case 'mirror':
texture.wrapS = MirroredRepeatWrapping;
break;
case 'none':
case 'clamp':
texture.wrapS = ClampToEdgeWrapping;
break;
default:
texture.wrapS = RepeatWrapping;
}
switch ( texture2d.tilestylev ) {
case 'wrap':
texture.wrapT = RepeatWrapping;
break;
case 'mirror':
texture.wrapT = MirroredRepeatWrapping;
break;
case 'none':
case 'clamp':
texture.wrapT = ClampToEdgeWrapping;
break;
default:
texture.wrapT = RepeatWrapping;
}
switch ( texture2d.filter ) {
case 'auto':
texture.magFilter = LinearFilter;
texture.minFilter = LinearMipmapLinearFilter;
break;
case 'linear':
texture.magFilter = LinearFilter;
texture.minFilter = LinearFilter;
break;
case 'nearest':
texture.magFilter = NearestFilter;
texture.minFilter = NearestFilter;
break;
default:
texture.magFilter = LinearFilter;
texture.minFilter = LinearMipmapLinearFilter;
}
return texture;
} else {
return null;
}
}
function buildBasematerialsMeshes( basematerials, triangleProperties, meshData, objects, modelData, textureData, objectData ) {
const objectPindex = objectData.pindex;
const materialMap = {};
for ( let i = 0, l = triangleProperties.length; i < l; i ++ ) {
const triangleProperty = triangleProperties[ i ];
const pindex = ( triangleProperty.p1 !== undefined ) ? triangleProperty.p1 : objectPindex;
if ( materialMap[ pindex ] === undefined ) materialMap[ pindex ] = [];
materialMap[ pindex ].push( triangleProperty );
}
//
const keys = Object.keys( materialMap );
const meshes = [];
for ( let i = 0, l = keys.length; i < l; i ++ ) {
const materialIndex = keys[ i ];
const trianglePropertiesProps = materialMap[ materialIndex ];
const basematerialData = basematerials.basematerials[ materialIndex ];
const material = getBuild( basematerialData, objects, modelData, textureData, objectData, buildBasematerial );
//
const geometry = new BufferGeometry();
const positionData = [];
const vertices = meshData.vertices;
for ( let j = 0, jl = trianglePropertiesProps.length; j < jl; j ++ ) {
const triangleProperty = trianglePropertiesProps[ j ];
positionData.push( vertices[ ( triangleProperty.v1 * 3 ) + 0 ] );
positionData.push( vertices[ ( triangleProperty.v1 * 3 ) + 1 ] );
positionData.push( vertices[ ( triangleProperty.v1 * 3 ) + 2 ] );
positionData.push( vertices[ ( triangleProperty.v2 * 3 ) + 0 ] );
positionData.push( vertices[ ( triangleProperty.v2 * 3 ) + 1 ] );
positionData.push( vertices[ ( triangleProperty.v2 * 3 ) + 2 ] );
positionData.push( vertices[ ( triangleProperty.v3 * 3 ) + 0 ] );
positionData.push( vertices[ ( triangleProperty.v3 * 3 ) + 1 ] );
positionData.push( vertices[ ( triangleProperty.v3 * 3 ) + 2 ] );
}
geometry.setAttribute( 'position', new Float32BufferAttribute( positionData, 3 ) );
//
const mesh = new Mesh( geometry, material );
meshes.push( mesh );
}
return meshes;
}
function buildTexturedMesh( texture2dgroup, triangleProperties, meshData, objects, modelData, textureData, objectData ) {
// geometry
const geometry = new BufferGeometry();
const positionData = [];
const uvData = [];
const vertices = meshData.vertices;
const uvs = texture2dgroup.uvs;
for ( let i = 0, l = triangleProperties.length; i < l; i ++ ) {
const triangleProperty = triangleProperties[ i ];
positionData.push( vertices[ ( triangleProperty.v1 * 3 ) + 0 ] );
positionData.push( vertices[ ( triangleProperty.v1 * 3 ) + 1 ] );
positionData.push( vertices[ ( triangleProperty.v1 * 3 ) + 2 ] );
positionData.push( vertices[ ( triangleProperty.v2 * 3 ) + 0 ] );
positionData.push( vertices[ ( triangleProperty.v2 * 3 ) + 1 ] );
positionData.push( vertices[ ( triangleProperty.v2 * 3 ) + 2 ] );
positionData.push( vertices[ ( triangleProperty.v3 * 3 ) + 0 ] );
positionData.push( vertices[ ( triangleProperty.v3 * 3 ) + 1 ] );
positionData.push( vertices[ ( triangleProperty.v3 * 3 ) + 2 ] );
//
uvData.push( uvs[ ( triangleProperty.p1 * 2 ) + 0 ] );
uvData.push( uvs[ ( triangleProperty.p1 * 2 ) + 1 ] );
uvData.push( uvs[ ( triangleProperty.p2 * 2 ) + 0 ] );
uvData.push( uvs[ ( triangleProperty.p2 * 2 ) + 1 ] );
uvData.push( uvs[ ( triangleProperty.p3 * 2 ) + 0 ] );
uvData.push( uvs[ ( triangleProperty.p3 * 2 ) + 1 ] );
}
geometry.setAttribute( 'position', new Float32BufferAttribute( positionData, 3 ) );
geometry.setAttribute( 'uv', new Float32BufferAttribute( uvData, 2 ) );
// material
const texture = getBuild( texture2dgroup, objects, modelData, textureData, objectData, buildTexture );
const material = new MeshPhongMaterial( { map: texture, flatShading: true } );
// mesh
const mesh = new Mesh( geometry, material );
return mesh;
}
function buildVertexColorMesh( colorgroup, triangleProperties, meshData, objectData ) {
// geometry
const geometry = new BufferGeometry();
const positionData = [];
const colorData = [];
const vertices = meshData.vertices;
const colors = colorgroup.colors;
for ( let i = 0, l = triangleProperties.length; i < l; i ++ ) {
const triangleProperty = triangleProperties[ i ];
const v1 = triangleProperty.v1;
const v2 = triangleProperty.v2;
const v3 = triangleProperty.v3;
positionData.push( vertices[ ( v1 * 3 ) + 0 ] );
positionData.push( vertices[ ( v1 * 3 ) + 1 ] );
positionData.push( vertices[ ( v1 * 3 ) + 2 ] );
positionData.push( vertices[ ( v2 * 3 ) + 0 ] );
positionData.push( vertices[ ( v2 * 3 ) + 1 ] );
positionData.push( vertices[ ( v2 * 3 ) + 2 ] );
positionData.push( vertices[ ( v3 * 3 ) + 0 ] );
positionData.push( vertices[ ( v3 * 3 ) + 1 ] );
positionData.push( vertices[ ( v3 * 3 ) + 2 ] );
//
const p1 = ( triangleProperty.p1 !== undefined ) ? triangleProperty.p1 : objectData.pindex;
const p2 = ( triangleProperty.p2 !== undefined ) ? triangleProperty.p2 : p1;
const p3 = ( triangleProperty.p3 !== undefined ) ? triangleProperty.p3 : p1;
colorData.push( colors[ ( p1 * 3 ) + 0 ] );
colorData.push( colors[ ( p1 * 3 ) + 1 ] );
colorData.push( colors[ ( p1 * 3 ) + 2 ] );
colorData.push( colors[ ( p2 * 3 ) + 0 ] );
colorData.push( colors[ ( p2 * 3 ) + 1 ] );
colorData.push( colors[ ( p2 * 3 ) + 2 ] );
colorData.push( colors[ ( p3 * 3 ) + 0 ] );
colorData.push( colors[ ( p3 * 3 ) + 1 ] );
colorData.push( colors[ ( p3 * 3 ) + 2 ] );
}
geometry.setAttribute( 'position', new Float32BufferAttribute( positionData, 3 ) );
geometry.setAttribute( 'color', new Float32BufferAttribute( colorData, 3 ) );
// material
const material = new MeshPhongMaterial( { vertexColors: true, flatShading: true } );
// mesh
const mesh = new Mesh( geometry, material );
return mesh;
}
function buildDefaultMesh( meshData ) {
const geometry = new BufferGeometry();
geometry.setIndex( new BufferAttribute( meshData[ 'triangles' ], 1 ) );
geometry.setAttribute( 'position', new BufferAttribute( meshData[ 'vertices' ], 3 ) );
const material = new MeshPhongMaterial( {
name: Loader.DEFAULT_MATERIAL_NAME,
color: 0xffffff,
flatShading: true
} );
const mesh = new Mesh( geometry, material );
return mesh;
}
function buildMeshes( resourceMap, meshData, objects, modelData, textureData, objectData ) {
const keys = Object.keys( resourceMap );
const meshes = [];
for ( let i = 0, il = keys.length; i < il; i ++ ) {
const resourceId = keys[ i ];
const triangleProperties = resourceMap[ resourceId ];
const resourceType = getResourceType( resourceId, modelData );
switch ( resourceType ) {
case 'material':
const basematerials = modelData.resources.basematerials[ resourceId ];
const newMeshes = buildBasematerialsMeshes( basematerials, triangleProperties, meshData, objects, modelData, textureData, objectData );
for ( let j = 0, jl = newMeshes.length; j < jl; j ++ ) {
meshes.push( newMeshes[ j ] );
}
break;
case 'texture':
const texture2dgroup = modelData.resources.texture2dgroup[ resourceId ];
meshes.push( buildTexturedMesh( texture2dgroup, triangleProperties, meshData, objects, modelData, textureData, objectData ) );
break;
case 'vertexColors':
const colorgroup = modelData.resources.colorgroup[ resourceId ];
meshes.push( buildVertexColorMesh( colorgroup, triangleProperties, meshData, objectData ) );
break;
case 'default':
meshes.push( buildDefaultMesh( meshData ) );
break;
default:
console.error( 'THREE.3MFLoader: Unsupported resource type.' );
}
}
if ( objectData.name ) {
for ( let i = 0; i < meshes.length; i ++ ) {
meshes[ i ].name = objectData.name;
}
}
return meshes;
}
function getResourceType( pid, modelData ) {
if ( modelData.resources.texture2dgroup[ pid ] !== undefined ) {
return 'texture';
} else if ( modelData.resources.basematerials[ pid ] !== undefined ) {
return 'material';
} else if ( modelData.resources.colorgroup[ pid ] !== undefined ) {
return 'vertexColors';
} else if ( pid === 'default' ) {
return 'default';
} else {
return undefined;
}
}
function analyzeObject( meshData, objectData ) {
const resourceMap = {};
const triangleProperties = meshData[ 'triangleProperties' ];
const objectPid = objectData.pid;
for ( let i = 0, l = triangleProperties.length; i < l; i ++ ) {
const triangleProperty = triangleProperties[ i ];
let pid = ( triangleProperty.pid !== undefined ) ? triangleProperty.pid : objectPid;
if ( pid === undefined ) pid = 'default';
if ( resourceMap[ pid ] === undefined ) resourceMap[ pid ] = [];
resourceMap[ pid ].push( triangleProperty );
}
return resourceMap;
}
function buildGroup( meshData, objects, modelData, textureData, objectData ) {
const group = new Group();
const resourceMap = analyzeObject( meshData, objectData );
const meshes = buildMeshes( resourceMap, meshData, objects, modelData, textureData, objectData );
for ( let i = 0, l = meshes.length; i < l; i ++ ) {
group.add( meshes[ i ] );
}
return group;
}
function applyExtensions( extensions, meshData, modelXml ) {
if ( ! extensions ) {
return;
}
const availableExtensions = [];
const keys = Object.keys( extensions );
for ( let i = 0; i < keys.length; i ++ ) {
const ns = keys[ i ];
for ( let j = 0; j < scope.availableExtensions.length; j ++ ) {
const extension = scope.availableExtensions[ j ];
if ( extension.ns === ns ) {
availableExtensions.push( extension );
}
}
}
for ( let i = 0; i < availableExtensions.length; i ++ ) {
const extension = availableExtensions[ i ];
extension.apply( modelXml, extensions[ extension[ 'ns' ] ], meshData );
}
}
function getBuild( data, objects, modelData, textureData, objectData, builder ) {
if ( data.build !== undefined ) return data.build;
data.build = builder( data, objects, modelData, textureData, objectData );
return data.build;
}
function buildBasematerial( materialData, objects, modelData ) {
let material;
const displaypropertiesid = materialData.displaypropertiesid;
const pbmetallicdisplayproperties = modelData.resources.pbmetallicdisplayproperties;
if ( displaypropertiesid !== null && pbmetallicdisplayproperties[ displaypropertiesid ] !== undefined ) {
// metallic display property, use StandardMaterial
const pbmetallicdisplayproperty = pbmetallicdisplayproperties[ displaypropertiesid ];
const metallicData = pbmetallicdisplayproperty.data[ materialData.index ];
material = new MeshStandardMaterial( { flatShading: true, roughness: metallicData.roughness, metalness: metallicData.metallicness } );
} else {
// otherwise use PhongMaterial
material = new MeshPhongMaterial( { flatShading: true } );
}
material.name = materialData.name;
// displaycolor MUST be specified with a value of a 6 or 8 digit hexadecimal number, e.g. "#RRGGBB" or "#RRGGBBAA"
const displaycolor = materialData.displaycolor;
const color = displaycolor.substring( 0, 7 );
material.color.setStyle( color, COLOR_SPACE_3MF );
// process alpha if set
if ( displaycolor.length === 9 ) {
material.opacity = parseInt( displaycolor.charAt( 7 ) + displaycolor.charAt( 8 ), 16 ) / 255;
}
return material;
}
function buildComposite( compositeData, objects, modelData, textureData ) {
const composite = new Group();
for ( let j = 0; j < compositeData.length; j ++ ) {
const component = compositeData[ j ];
let build = objects[ component.objectId ];
if ( build === undefined ) {
buildObject( component.objectId, objects, modelData, textureData );
build = objects[ component.objectId ];
}
const object3D = build.clone();
// apply component transform
const transform = component.transform;
if ( transform ) {
object3D.applyMatrix4( transform );
}
composite.add( object3D );
}
return composite;
}
function buildObject( objectId, objects, modelData, textureData ) {
const objectData = modelData[ 'resources' ][ 'object' ][ objectId ];
if ( objectData[ 'mesh' ] ) {
const meshData = objectData[ 'mesh' ];
const extensions = modelData[ 'extensions' ];
const modelXml = modelData[ 'xml' ];
applyExtensions( extensions, meshData, modelXml );
objects[ objectData.id ] = getBuild( meshData, objects, modelData, textureData, objectData, buildGroup );
} else {
const compositeData = objectData[ 'components' ];
objects[ objectData.id ] = getBuild( compositeData, objects, modelData, textureData, objectData, buildComposite );
}
if ( objectData.name ) {
objects[ objectData.id ].name = objectData.name;
}
}
function buildObjects( data3mf ) {
const modelsData = data3mf.model;
const modelRels = data3mf.modelRels;
const objects = {};
const modelsKeys = Object.keys( modelsData );
const textureData = {};
// evaluate model relationships to textures
if ( modelRels ) {
for ( let i = 0, l = modelRels.length; i < l; i ++ ) {
const modelRel = modelRels[ i ];
const textureKey = modelRel.target.substring( 1 );
if ( data3mf.texture[ textureKey ] ) {
textureData[ modelRel.target ] = data3mf.texture[ textureKey ];
}
}
}
// start build
for ( let i = 0; i < modelsKeys.length; i ++ ) {
const modelsKey = modelsKeys[ i ];
const modelData = modelsData[ modelsKey ];
const objectIds = Object.keys( modelData[ 'resources' ][ 'object' ] );
for ( let j = 0; j < objectIds.length; j ++ ) {
const objectId = objectIds[ j ];
buildObject( objectId, objects, modelData, textureData );
}
}
return objects;
}
function fetch3DModelPart( rels ) {
for ( let i = 0; i < rels.length; i ++ ) {
const rel = rels[ i ];
const extension = rel.target.split( '.' ).pop();
if ( extension.toLowerCase() === 'model' ) return rel;
}
}
function build( objects, data3mf ) {
const group = new Group();
const relationship = fetch3DModelPart( data3mf[ 'rels' ] );
const buildData = data3mf.model[ relationship[ 'target' ].substring( 1 ) ][ 'build' ];
for ( let i = 0; i < buildData.length; i ++ ) {
const buildItem = buildData[ i ];
const object3D = objects[ buildItem[ 'objectId' ] ].clone();
// apply transform
const transform = buildItem[ 'transform' ];
if ( transform ) {
object3D.applyMatrix4( transform );
}
group.add( object3D );
}
return group;
}
const data3mf = loadDocument( data );
const objects = buildObjects( data3mf );
return build( objects, data3mf );
}
addExtension( extension ) {
this.availableExtensions.push( extension );
}
}
export { ThreeMFLoader };
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