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TDSLoader.js
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TDSLoader.js
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import {
AdditiveBlending,
BufferGeometry,
Color,
DoubleSide,
FileLoader,
Float32BufferAttribute,
Group,
LinearSRGBColorSpace,
Loader,
LoaderUtils,
Matrix4,
Mesh,
MeshPhysicalMaterial,
TextureLoader,
SRGBColorSpace
} from "three";
/**
* Autodesk 3DS three.js file loader, based on lib3ds.
*
* Loads geometry with uv and materials basic properties with texture support.
*
* @class TDSLoader
* @constructor
*/
var localPath = '';
var urlPath = '';
const default_texture = new TextureLoader().load( 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAQAAAAECAYAAACp8Z5+AAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsIAAA7CARUoSoAAAAAzSURBVBhXFYrJDQAxDAIHl5tG9pWOI8/aICGunO9qP0JRNZqwltgspltKdtmfihNMoc0PFNkQjHSfyTIAAAAASUVORK5CYII=' );
class TDSLoader extends Loader {
constructor( manager ) {
super( manager );
this.debug = false;
this.group = null;
this.position = 0;
this.materials = [];
this.meshes = [];
}
/**
* Load 3ds file from url.
*
* @method load
* @param {[type]} url URL for the file.
* @param {Function} onLoad onLoad callback, receives group Object3D as argument.
* @param {Function} onProgress onProgress callback.
* @param {Function} onError onError callback.
*/
load( url, localResourcePath, urlResourcePath, onLoad, onProgress, onError ) {
const scope = this;
const path = this.path === '' ? LoaderUtils.extractUrlBase( url ) : this.path;
const loader = new FileLoader( this.manager );
if (localResourcePath !== '') localPath = localResourcePath;
if (urlResourcePath !== '') urlPath = urlResourcePath;
loader.setPath( this.path );
loader.setResponseType( 'arraybuffer' );
loader.setRequestHeader( this.requestHeader );
loader.setWithCredentials( this.withCredentials );
loader.load( url, function ( data ) {
try {
onLoad( scope.parse( data, path ) );
} catch ( e ) {
if ( onError ) {
onError( e );
} else {
console.error( e );
}
scope.manager.itemError( url );
}
}, onProgress, onError );
}
/**
* Parse arraybuffer data and load 3ds file.
*
* @method parse
* @param {ArrayBuffer} arraybuffer Arraybuffer data to be loaded.
* @param {String} path Path for external resources.
* @return {Group} THREE.Group loaded from 3ds file.
*/
parse( arraybuffer, path ) {
this.group = new Group();
this.position = 0;
this.materials = [];
this.meshes = [];
this.readFile( arraybuffer, path );
for ( let i = 0; i < this.meshes.length; i ++ ) {
this.group.add( this.meshes[ i ] );
}
return this.group;
}
/**
* Decode file content to read 3ds data.
*
* @method readFile
* @param {ArrayBuffer} arraybuffer Arraybuffer data to be loaded.
* @param {String} path Path for external resources.
*/
readFile( arraybuffer, path ) {
const data = new DataView( arraybuffer );
const chunk = this.readChunk( data );
if ( chunk.id === MLIBMAGIC || chunk.id === CMAGIC || chunk.id === M3DMAGIC ) {
let next = this.nextChunk( data, chunk );
while ( next !== 0 ) {
if ( next === M3D_VERSION ) {
const version = this.readDWord( data );
this.debugMessage( '3DS file version: ' + version );
} else if ( next === MDATA ) {
this.resetPosition( data );
this.readMeshData( data, path );
} else {
this.debugMessage( 'Unknown main chunk: ' + next.toString( 16 ) );
}
next = this.nextChunk( data, chunk );
}
}
this.debugMessage( 'Parsed ' + this.meshes.length + ' meshes' );
}
/**
* Read mesh data chunk.
*
* @method readMeshData
* @param {Dataview} data Dataview in use.
* @param {String} path Path for external resources.
*/
readMeshData( data, path ) {
const chunk = this.readChunk( data );
let next = this.nextChunk( data, chunk );
while ( next !== 0 ) {
if ( next === MESH_VERSION ) {
const version = + this.readDWord( data );
this.debugMessage( 'Mesh Version: ' + version );
} else if ( next === MASTER_SCALE ) {
const scale = this.readFloat( data );
this.debugMessage( 'Master scale: ' + scale );
this.group.scale.set( scale, scale, scale );
} else if ( next === NAMED_OBJECT ) {
this.debugMessage( 'Named Object' );
this.resetPosition( data );
this.readNamedObject( data );
} else if ( next === MAT_ENTRY ) {
this.debugMessage( 'Material' );
this.resetPosition( data );
this.readMaterialEntry( data, path );
} else {
this.debugMessage( 'Unknown MDATA chunk: ' + next.toString( 16 ) );
}
next = this.nextChunk( data, chunk );
}
}
/**
* Read named object chunk.
*
* @method readNamedObject
* @param {Dataview} data Dataview in use.
*/
readNamedObject( data ) {
const chunk = this.readChunk( data );
const name = this.readString( data, 64 );
chunk.cur = this.position;
let next = this.nextChunk( data, chunk );
while ( next !== 0 ) {
if ( next === N_TRI_OBJECT ) {
this.resetPosition( data );
const mesh = this.readMesh( data );
mesh.name = name;
this.meshes.push( mesh );
} else {
this.debugMessage( 'Unknown named object chunk: ' + next.toString( 16 ) );
}
next = this.nextChunk( data, chunk );
}
this.endChunk( chunk );
}
/**
* Read material data chunk and add it to the material list.
*
* @method readMaterialEntry
* @param {Dataview} data Dataview in use.
* @param {String} path Path for external resources.
*/
readMaterialEntry( data, path ) {
const chunk = this.readChunk( data );
let next = this.nextChunk( data, chunk );
let specular_present = false;
const material = new MeshPhysicalMaterial( { metalness: 0.6, roughness: 0.5 } );
while ( next !== 0 ) {
if ( next === MAT_NAME ) {
material.name = this.readString( data, 64 );
this.debugMessage( ' Name: ' + material.name );
} else if ( next === MAT_WIRE ) {
material.wireframe = true;
this.debugMessage( ' Wireframe' );
} else if ( next === MAT_WIRE_SIZE ) {
const value = this.readByte( data );
material.wireframeLinewidth = value;
this.debugMessage( ' Wireframe Thickness: ' + value );
} else if ( next === MAT_TWO_SIDE ) {
material.side = DoubleSide;
this.debugMessage( ' DoubleSided' );
} else if ( next === MAT_ADDITIVE ) {
material.blending = AdditiveBlending;
this.debugMessage( ' Additive Blending' );
} else if ( next === MAT_DIFFUSE ) {
material.color = this.readColor( data );
this.debugMessage( ' Diffuse THREE.Color' );
} else if ( next === MAT_SPECULAR ) {
specular_present = true;
material.specularColor = this.readColor( data );
this.debugMessage( ' Specular THREE.Color' );
} else if ( next === MAT_AMBIENT ) {
material.color = this.readColor( data );
this.debugMessage( ' Ambient color' );
} else if ( next === MAT_SHININESS ) {
const shininess = this.readPercentage( data );
material.shininess = shininess * 100;
this.debugMessage( ' Shininess : ' + shininess );
} else if ( next === MAT_TRANSPARENCY ) {
const transparency = this.readPercentage( data );
material.opacity = 1 - transparency;
material.transparent = material.opacity < 1 ? true : false;
this.debugMessage( ' Transparency : ' + transparency );
} else if ( next === MAT_TEXMAP ) {
this.resetPosition( data );
material.map = this.readMap( data, path );
material.map.colorSpace = SRGBColorSpace;
this.debugMessage( ' ColorMap' );
} else if ( next === MAT_BUMPMAP ) {
this.resetPosition( data );
material.bumpMap = this.readMap( data, path );
material.bumpMap.colorSpace = LinearSRGBColorSpace;
this.debugMessage( ' BumpMap' );
} else if ( next === MAT_OPACMAP ) {
this.resetPosition( data );
material.alphaMap = this.readMap( data, path );
material.alphaMap.colorSpace = LinearSRGBColorSpace;
this.debugMessage( ' OpacityMap' );
} else if ( next === MAT_SPECMAP ) {
specular_present = true;
this.resetPosition( data );
material.specularColorMap = this.readMap( data, path );
material.specularColorMap.colorSpace = SRGBColorSpace;
this.debugMessage( ' SpecularMap' );
} else {
this.debugMessage( ' Unknown material chunk: ' + next.toString( 16 ) );
}
next = this.nextChunk( data, chunk );
}
if ( specular_present === true ) {
material.metalness = 0.475;
material.roughness = 0.725;
}
this.endChunk( chunk );
this.materials[ material.name ] = material;
}
/**
* Read mesh data chunk.
*
* @method readMesh
* @param {Dataview} data Dataview in use.
* @return {Mesh} The parsed mesh.
*/
readMesh( data ) {
const chunk = this.readChunk( data );
let next = this.nextChunk( data, chunk );
const geometry = new BufferGeometry();
const material = new MeshPhysicalMaterial( { metalness: 0.6, roughness: 0.5 } );
const mesh = new Mesh( geometry, material );
mesh.name = 'mesh';
while ( next !== 0 ) {
if ( next === POINT_ARRAY ) {
const points = this.readWord( data );
this.debugMessage( ' Vertex: ' + points ); //BufferGeometry
const vertices = [];
for ( let i = 0; i < points; i ++ ) {
vertices.push( this.readFloat( data ) );
vertices.push( this.readFloat( data ) );
vertices.push( this.readFloat( data ) );
}
geometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
} else if ( next === FACE_ARRAY ) {
this.resetPosition( data );
this.readFaceArray( data, mesh );
} else if ( next === TEX_VERTS ) {
const texels = this.readWord( data );
this.debugMessage( ' UV: ' + texels ); //BufferGeometry
const uvs = [];
for ( let i = 0; i < texels; i ++ ) {
uvs.push( this.readFloat( data ) );
uvs.push( this.readFloat( data ) );
}
geometry.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
} else if ( next === MESH_MATRIX ) {
this.debugMessage( ' Tranformation Matrix (TODO)' );
const values = [];
for ( let i = 0; i < 12; i ++ ) {
values[ i ] = this.readFloat( data );
}
const matrix = new Matrix4();
//X Line
matrix.elements[ 0 ] = values[ 0 ];
matrix.elements[ 1 ] = values[ 6 ];
matrix.elements[ 2 ] = values[ 3 ];
matrix.elements[ 3 ] = values[ 9 ];
//Y Line
matrix.elements[ 4 ] = values[ 2 ];
matrix.elements[ 5 ] = values[ 8 ];
matrix.elements[ 6 ] = values[ 5 ];
matrix.elements[ 7 ] = values[ 11 ];
//Z Line
matrix.elements[ 8 ] = values[ 1 ];
matrix.elements[ 9 ] = values[ 7 ];
matrix.elements[ 10 ] = values[ 4 ];
matrix.elements[ 11 ] = values[ 10 ];
//W Line
//matrix.elements[ 12 ] = 0;
//matrix.elements[ 13 ] = 0;
//matrix.elements[ 14 ] = 0;
//matrix.elements[ 15 ] = 1;
matrix.transpose();
const inverse = new Matrix4();
inverse.copy( matrix ).invert();
geometry.applyMatrix4( inverse );
matrix.decompose( mesh.position, mesh.quaternion, mesh.scale );
} else {
this.debugMessage( ' Unknown mesh chunk: ' + next.toString( 16 ) );
}
next = this.nextChunk( data, chunk );
}
this.endChunk( chunk );
geometry.computeVertexNormals();
return mesh;
}
/**
* Read face array data chunk.
*
* @method readFaceArray
* @param {Dataview} data Dataview in use.
* @param {Mesh} mesh THREE.Mesh to be filled with the data read.
*/
readFaceArray( data, mesh ) {
const chunk = this.readChunk( data );
const faces = this.readWord( data );
this.debugMessage( ' Faces: ' + faces );
const index = [];
for ( let i = 0; i < faces; ++ i ) {
index.push( this.readWord( data ), this.readWord( data ), this.readWord( data ) );
this.readWord( data ); // visibility
}
mesh.geometry.setIndex( index ); //The rest of the FACE_ARRAY chunk is subchunks
let materialIndex = 0;
let start = 0;
while ( this.position < chunk.end ) {
const subchunk = this.readChunk( data );
if ( subchunk.id === MSH_MAT_GROUP ) {
this.debugMessage( ' Material THREE.Group' );
this.resetPosition( data );
const group = this.readMaterialGroup( data );
const count = group.index.length * 3; // assuming successive indices
mesh.geometry.addGroup( start, count, materialIndex );
start += count;
materialIndex ++;
const material = this.materials[ group.name ];
if ( Array.isArray( mesh.material ) === false ) mesh.material = [];
if ( material !== undefined ) {
mesh.material.push( material );
}
} else {
this.debugMessage( ' Unknown face array chunk: ' + subchunk.toString( 16 ) );
}
this.endChunk( subchunk );
}
if ( mesh.material.length === 1 ) mesh.material = mesh.material[ 0 ]; // for backwards compatibility
this.endChunk( chunk );
}
/**
* Read texture map data chunk.
*
* @method readMap
* @param {Dataview} data Dataview in use.
* @param {String} path Path for external resources.
* @return {Texture} Texture read from this data chunk.
*/
readMap( data, path ) {
const chunk = this.readChunk( data );
let next = this.nextChunk( data, chunk );
let texture = {};
let loader;
let ext;
let local_texture_blob;
let url_texture;
while ( next !== 0 ) {
if ( next === MAT_MAPNAME ) {
const name = this.readString( data, 128 );
texture = default_texture;
if ( name.toLowerCase().endsWith( '.dds' ) || name.toLowerCase().endsWith( '.tga' ) ) {
name.toLowerCase().endsWith( '.dds' ) ? ( ext = '.dds' ) : ( ext = '.tga' );
loader = this.manager.getHandler( ext );
} else {
loader = new TextureLoader( this.manager );
}
if ( localPath !== '' ) {
loader.setPath( this.resourcePath || path ).setCrossOrigin( this.crossOrigin );
} else if ( urlPath !== '' ) {
loader.setCrossOrigin( this.crossOrigin );
} else {
loader.setPath( this.resourcePath || path ).setCrossOrigin( this.crossOrigin );
}
if ( localPath !== '' ) {
let blobs = localPath.split( ',' );
let temp_blob_name_12, temp_blob_name_8_4;
blobs.forEach( ( blob_name, index ) => {
if ( blob_name.length > 12 ) {
temp_blob_name_12 = blob_name.substring( 0, 12 );
temp_blob_name_8_4 = blob_name.substring( 0, 8 ) + blob_name.slice( -4 );
}
if ( name.toUpperCase() === blob_name.toUpperCase() || ( temp_blob_name_12 && name.toUpperCase() === temp_blob_name_12.toUpperCase() ) || ( temp_blob_name_8_4 && name.toUpperCase() === temp_blob_name_8_4.toUpperCase() ) ) {
local_texture_blob = blobs[ index + 1 ].substring( blobs[ index + 1 ].lastIndexOf( '/' ) + 1 );
}
});
if ( local_texture_blob ) {
texture = loader.load( local_texture_blob );
} else {
console.error( 'Not found: ' + path + name );
}
} else if ( urlPath !== '' ) {
let urls = urlPath.split( ',' );
let temp_url_name_12, temp_url_name_8_4;
urls.forEach( ( url_name, index ) => {
if ( url_name.length > 12 ) {
temp_url_name_12 = url_name.substring( 0, 12 );
temp_url_name_8_4 = url_name.substring( 0, 8 ) + url_name.slice( -4 );
}
if ( name.toUpperCase() === url_name.toUpperCase() || ( temp_url_name_12 && name.toUpperCase() === temp_url_name_12.toUpperCase() ) || ( temp_url_name_8_4 && name.toUpperCase() === temp_url_name_8_4.toUpperCase() ) ) {
url_texture = urls[ index + 1 ];
}
});
if ( url_texture ) {
texture = loader.load( url_texture );
} else {
console.error( 'Not found: ' + path + name );
}
} else {
texture = loader.load( name );
}
if ( name.toLowerCase().endsWith( '.tga' ) ) {
texture.generateMipmaps = true;
texture.flipY = true;
} else if ( name.toLowerCase().endsWith( '.dds' ) ) {
texture.repeat.y = - 1;
}
this.debugMessage( ' File: ' + path + name );
} else if ( next === MAT_MAP_UOFFSET ) {
texture.offset.x = this.readFloat( data );
this.debugMessage( ' OffsetX: ' + texture.offset.x );
} else if ( next === MAT_MAP_VOFFSET ) {
texture.offset.y = this.readFloat( data );
this.debugMessage( ' OffsetY: ' + texture.offset.y );
} else if ( next === MAT_MAP_USCALE ) {
texture.repeat.x = this.readFloat( data );
this.debugMessage( ' RepeatX: ' + texture.repeat.x );
} else if ( next === MAT_MAP_VSCALE ) {
texture.repeat.y = this.readFloat( data );
this.debugMessage( ' RepeatY: ' + texture.repeat.y );
} else if ( next === MAT_MAP_ANG ) {
texture.rotation = this.readFloat( data );
this.debugMessage( ' Rotation: ' + texture.rotation );
} else {
this.debugMessage( ' Unknown map chunk: ' + next.toString( 16 ) );
}
next = this.nextChunk( data, chunk );
}
this.endChunk( chunk );
return texture;
}
/**
* Read material group data chunk.
*
* @method readMaterialGroup
* @param {Dataview} data Dataview in use.
* @return {Object} Object with name and index of the object.
*/
readMaterialGroup( data ) {
this.readChunk( data );
const name = this.readString( data, 64 );
const numFaces = this.readWord( data );
this.debugMessage( ' Name: ' + name );
this.debugMessage( ' Faces: ' + numFaces );
const index = [];
for ( let i = 0; i < numFaces; ++ i ) {
index.push( this.readWord( data ) );
}
return {
name: name,
index: index
};
}
/**
* Read a color value.
*
* @method readColor
* @param {DataView} data Dataview.
* @return {Color} THREE.Color value read..
*/
readColor( data ) {
const chunk = this.readChunk( data );
const color = new Color();
if ( chunk.id === COLOR_24 || chunk.id === LIN_COLOR_24 ) {
const r = this.readByte( data );
const g = this.readByte( data );
const b = this.readByte( data );
color.setRGB( r / 255, g / 255, b / 255, LinearSRGBColorSpace );
this.debugMessage( ' THREE.Color: ' + color.r + ', ' + color.g + ', ' + color.b );
} else if ( chunk.id === COLOR_F || chunk.id === LIN_COLOR_F ) {
const r = this.readFloat( data );
const g = this.readFloat( data );
const b = this.readFloat( data );
color.setRGB( r, g, b, LinearSRGBColorSpace );
this.debugMessage( ' THREE.Color: ' + color.r + ', ' + color.g + ', ' + color.b );
} else {
this.debugMessage( ' Unknown color chunk: ' + chunk.toString( 16 ) );
}
this.endChunk( chunk );
return color;
}
/**
* Read next chunk of data.
*
* @method readChunk
* @param {DataView} data Dataview.
* @return {Object} Chunk of data read.
*/
readChunk( data ) {
const chunk = {};
chunk.cur = this.position;
chunk.id = this.readWord( data );
chunk.size = this.readDWord( data );
chunk.end = chunk.cur + chunk.size;
chunk.cur += 6;
return chunk;
}
/**
* Set position to the end of the current chunk of data.
*
* @method endChunk
* @param {Object} chunk Data chunk.
*/
endChunk( chunk ) {
this.position = chunk.end;
}
/**
* Move to the next data chunk.
*
* @method nextChunk
* @param {DataView} data Dataview.
* @param {Object} chunk Data chunk.
*/
nextChunk( data, chunk ) {
if ( chunk.cur >= chunk.end ) {
return 0;
}
this.position = chunk.cur;
try {
const next = this.readChunk( data );
chunk.cur += next.size;
return next.id;
} catch ( e ) {
this.debugMessage( 'Unable to read chunk at ' + this.position );
return 0;
}
}
/**
* Reset dataview position.
*
* @method resetPosition
*/
resetPosition() {
this.position -= 6;
}
/**
* Read byte value.
*
* @method readByte
* @param {DataView} data Dataview to read data from.
* @return {Number} Data read from the dataview.
*/
readByte( data ) {
const v = data.getUint8( this.position, true );
this.position += 1;
return v;
}
/**
* Read 32 bit float value.
*
* @method readFloat
* @param {DataView} data Dataview to read data from.
* @return {Number} Data read from the dataview.
*/
readFloat( data ) {
try {
const v = data.getFloat32( this.position, true );
this.position += 4;
return v;
} catch ( e ) {
this.debugMessage( e + ' ' + this.position + ' ' + data.byteLength );
}
}
/**
* Read 32 bit signed integer value.
*
* @method readInt
* @param {DataView} data Dataview to read data from.
* @return {Number} Data read from the dataview.
*/
readInt( data ) {
const v = data.getInt32( this.position, true );
this.position += 4;
return v;
}
/**
* Read 16 bit signed integer value.
*
* @method readShort
* @param {DataView} data Dataview to read data from.
* @return {Number} Data read from the dataview.
*/
readShort( data ) {
const v = data.getInt16( this.position, true );
this.position += 2;
return v;
}
/**
* Read 64 bit unsigned integer value.
*
* @method readDWord
* @param {DataView} data Dataview to read data from.
* @return {Number} Data read from the dataview.
*/
readDWord( data ) {
const v = data.getUint32( this.position, true );
this.position += 4;
return v;
}
/**
* Read 32 bit unsigned integer value.
*
* @method readWord
* @param {DataView} data Dataview to read data from.
* @return {Number} Data read from the dataview.
*/
readWord( data ) {
const v = data.getUint16( this.position, true );
this.position += 2;
return v;
}
/**
* Read string value.
*
* @method readString
* @param {DataView} data Dataview to read data from.
* @param {Number} maxLength Max size of the string to be read.
* @return {String} Data read from the dataview.
*/
readString( data, maxLength ) {
let s = '';
for ( let i = 0; i < maxLength; i ++ ) {