Skip to content

Instantly share code, notes, and snippets.

@duhaime

duhaime/MTLLoader.js

Last active February 1, 2020 16:18
Show Gist options
  • Save duhaime/7cb23aaee121cf0c0a253394c50cd0a1 to your computer and use it in GitHub Desktop.
Save duhaime/7cb23aaee121cf0c0a253394c50cd0a1 to your computer and use it in GitHub Desktop.
Download ZIP
Drive
Raw
MTLLoader.js
/**
* Loads a Wavefront .mtl file specifying materials
*
* @author angelxuanchang
*/
THREE.MTLLoader = function ( manager ) {
THREE.Loader.call( this, manager );
};
THREE.MTLLoader.prototype = Object.assign( Object.create( THREE.Loader.prototype ), {
constructor: THREE.MTLLoader,
/**
* Loads and parses a MTL asset from a URL.
*
* @param {String} url - URL to the MTL file.
* @param {Function} [onLoad] - Callback invoked with the loaded object.
* @param {Function} [onProgress] - Callback for download progress.
* @param {Function} [onError] - Callback for download errors.
*
* @see setPath setResourcePath
*
* @note In order for relative texture references to resolve correctly
* you must call setResourcePath() explicitly prior to load.
*/
load: function ( url, onLoad, onProgress, onError ) {
var scope = this;
var path = ( this.path === '' ) ? THREE.LoaderUtils.extractUrlBase( url ) : this.path;
var loader = new THREE.FileLoader( this.manager );
loader.setPath( this.path );
loader.load( url, function ( text ) {
onLoad( scope.parse( text, path ) );
}, onProgress, onError );
},
setMaterialOptions: function ( value ) {
this.materialOptions = value;
return this;
},
/**
* Parses a MTL file.
*
* @param {String} text - Content of MTL file
* @return {THREE.MTLLoader.MaterialCreator}
*
* @see setPath setResourcePath
*
* @note In order for relative texture references to resolve correctly
* you must call setResourcePath() explicitly prior to parse.
*/
parse: function ( text, path ) {
var lines = text.split( '\n' );
var info = {};
var delimiter_pattern = /\s+/;
var materialsInfo = {};
for ( var i = 0; i < lines.length; i ++ ) {
var line = lines[ i ];
line = line.trim();
if ( line.length === 0 || line.charAt( 0 ) === '#' ) {
// Blank line or comment ignore
continue;
}
var pos = line.indexOf( ' ' );
var key = ( pos >= 0 ) ? line.substring( 0, pos ) : line;
key = key.toLowerCase();
var value = ( pos >= 0 ) ? line.substring( pos + 1 ) : '';
value = value.trim();
if ( key === 'newmtl' ) {
// New material
info = { name: value };
materialsInfo[ value ] = info;
} else {
if ( key === 'ka' || key === 'kd' || key === 'ks' || key === 'ke' ) {
var ss = value.split( delimiter_pattern, 3 );
info[ key ] = [ parseFloat( ss[ 0 ] ), parseFloat( ss[ 1 ] ), parseFloat( ss[ 2 ] ) ];
} else {
info[ key ] = value;
}
}
}
var materialCreator = new THREE.MTLLoader.MaterialCreator( this.resourcePath || path, this.materialOptions );
materialCreator.setCrossOrigin( this.crossOrigin );
materialCreator.setManager( this.manager );
materialCreator.setMaterials( materialsInfo );
return materialCreator;
}
} );
/**
* Create a new THREE.MTLLoader.MaterialCreator
* @param baseUrl - Url relative to which textures are loaded
* @param options - Set of options on how to construct the materials
* side: Which side to apply the material
* THREE.FrontSide (default), THREE.BackSide, THREE.DoubleSide
* wrap: What type of wrapping to apply for textures
* THREE.RepeatWrapping (default), THREE.ClampToEdgeWrapping, THREE.MirroredRepeatWrapping
* normalizeRGB: RGBs need to be normalized to 0-1 from 0-255
* Default: false, assumed to be already normalized
* ignoreZeroRGBs: Ignore values of RGBs (Ka,Kd,Ks) that are all 0's
* Default: false
* @constructor
*/
THREE.MTLLoader.MaterialCreator = function ( baseUrl, options ) {
this.baseUrl = baseUrl || '';
this.options = options;
this.materialsInfo = {};
this.materials = {};
this.materialsArray = [];
this.nameLookup = {};
this.side = ( this.options && this.options.side ) ? this.options.side : THREE.FrontSide;
this.wrap = ( this.options && this.options.wrap ) ? this.options.wrap : THREE.RepeatWrapping;
};
THREE.MTLLoader.MaterialCreator.prototype = {
constructor: THREE.MTLLoader.MaterialCreator,
crossOrigin: 'anonymous',
setCrossOrigin: function ( value ) {
this.crossOrigin = value;
return this;
},
setManager: function ( value ) {
this.manager = value;
},
setMaterials: function ( materialsInfo ) {
this.materialsInfo = this.convert( materialsInfo );
this.materials = {};
this.materialsArray = [];
this.nameLookup = {};
},
convert: function ( materialsInfo ) {
if ( ! this.options ) return materialsInfo;
var converted = {};
for ( var mn in materialsInfo ) {
// Convert materials info into normalized form based on options
var mat = materialsInfo[ mn ];
var covmat = {};
converted[ mn ] = covmat;
for ( var prop in mat ) {
var save = true;
var value = mat[ prop ];
var lprop = prop.toLowerCase();
switch ( lprop ) {
case 'kd':
case 'ka':
case 'ks':
// Diffuse color (color under white light) using RGB values
if ( this.options && this.options.normalizeRGB ) {
value = [ value[ 0 ] / 255, value[ 1 ] / 255, value[ 2 ] / 255 ];
}
if ( this.options && this.options.ignoreZeroRGBs ) {
if ( value[ 0 ] === 0 && value[ 1 ] === 0 && value[ 2 ] === 0 ) {
// ignore
save = false;
}
}
break;
default:
break;
}
if ( save ) {
covmat[ lprop ] = value;
}
}
}
return converted;
},
preload: function () {
for ( var mn in this.materialsInfo ) {
this.create( mn );
}
},
getIndex: function ( materialName ) {
return this.nameLookup[ materialName ];
},
getAsArray: function () {
var index = 0;
for ( var mn in this.materialsInfo ) {
this.materialsArray[ index ] = this.create( mn );
this.nameLookup[ mn ] = index;
index ++;
}
return this.materialsArray;
},
create: function ( materialName ) {
if ( this.materials[ materialName ] === undefined ) {
this.createMaterial_( materialName );
}
return this.materials[ materialName ];
},
createMaterial_: function ( materialName ) {
// Create material
var scope = this;
var mat = this.materialsInfo[ materialName ];
var params = {
name: materialName,
side: this.side
};
function resolveURL( baseUrl, url ) {
if ( typeof url !== 'string' || url === '' )
return '';
// Absolute URL
if ( /^https?:\/\//i.test( url ) ) return url;
return baseUrl + url;
}
function setMapForType( mapType, value ) {
if ( params[ mapType ] ) return; // Keep the first encountered texture
var texParams = scope.getTextureParams( value, params );
var map = scope.loadTexture( resolveURL( scope.baseUrl, texParams.url ) );
map.repeat.copy( texParams.scale );
map.offset.copy( texParams.offset );
map.wrapS = scope.wrap;
map.wrapT = scope.wrap;
params[ mapType ] = map;
}
for ( var prop in mat ) {
var value = mat[ prop ];
var n;
if ( value === '' ) continue;
switch ( prop.toLowerCase() ) {
// Ns is material specular exponent
case 'kd':
// Diffuse color (color under white light) using RGB values
params.color = new THREE.Color().fromArray( value );
break;
case 'ks':
// Specular color (color when light is reflected from shiny surface) using RGB values
params.specular = new THREE.Color().fromArray( value );
break;
case 'ke':
// Emissive using RGB values
params.emissive = new THREE.Color().fromArray( value );
break;
case 'map_kd':
// Diffuse texture map
setMapForType( "map", value );
break;
case 'map_ks':
// Specular map
setMapForType( "specularMap", value );
break;
case 'map_ke':
// Emissive map
setMapForType( "emissiveMap", value );
break;
case 'norm':
setMapForType( "normalMap", value );
break;
case 'map_bump':
case 'bump':
// Bump texture map
setMapForType( "bumpMap", value );
break;
case 'map_d':
// Alpha map
setMapForType( "alphaMap", value );
params.transparent = true;
break;
case 'ns':
// The specular exponent (defines the focus of the specular highlight)
// A high exponent results in a tight, concentrated highlight. Ns values normally range from 0 to 1000.
params.shininess = parseFloat( value );
break;
case 'd':
n = parseFloat( value );
if ( n < 1 ) {
params.opacity = n;
params.transparent = true;
}
break;
case 'tr':
n = parseFloat( value );
if ( this.options && this.options.invertTrProperty ) n = 1 - n;
if ( n > 0 ) {
params.opacity = 1 - n;
params.transparent = true;
}
break;
default:
break;
}
}
this.materials[ materialName ] = new THREE.MeshPhongMaterial( params );
return this.materials[ materialName ];
},
getTextureParams: function ( value, matParams ) {
var texParams = {
scale: new THREE.Vector2( 1, 1 ),
offset: new THREE.Vector2( 0, 0 )
};
var items = value.split( /\s+/ );
var pos;
pos = items.indexOf( '-bm' );
if ( pos >= 0 ) {
matParams.bumpScale = parseFloat( items[ pos + 1 ] );
items.splice( pos, 2 );
}
pos = items.indexOf( '-s' );
if ( pos >= 0 ) {
texParams.scale.set( parseFloat( items[ pos + 1 ] ), parseFloat( items[ pos + 2 ] ) );
items.splice( pos, 4 ); // we expect 3 parameters here!
}
pos = items.indexOf( '-o' );
if ( pos >= 0 ) {
texParams.offset.set( parseFloat( items[ pos + 1 ] ), parseFloat( items[ pos + 2 ] ) );
items.splice( pos, 4 ); // we expect 3 parameters here!
}
texParams.url = items.join( ' ' ).trim();
return texParams;
},
loadTexture: function ( url, mapping, onLoad, onProgress, onError ) {
var texture;
var manager = ( this.manager !== undefined ) ? this.manager : THREE.DefaultLoadingManager;
var loader = manager.getHandler( url );
if ( loader === null ) {
loader = new THREE.TextureLoader( manager );
}
if ( loader.setCrossOrigin ) loader.setCrossOrigin( this.crossOrigin );
texture = loader.load( url, onLoad, onProgress, onError );
if ( mapping !== undefined ) texture.mapping = mapping;
return texture;
}
};
Raw
OBJLoader.js
/**
* @author mrdoob / http://mrdoob.com/
*/
THREE.OBJLoader = ( function () {
// o object_name | g group_name
var object_pattern = /^[og]\s*(.+)?/;
// mtllib file_reference
var material_library_pattern = /^mtllib /;
// usemtl material_name
var material_use_pattern = /^usemtl /;
// usemap map_name
var map_use_pattern = /^usemap /;
function ParserState() {
var state = {
objects: [],
object: {},
vertices: [],
normals: [],
colors: [],
uvs: [],
materials: {},
materialLibraries: [],
startObject: function ( name, fromDeclaration ) {
// If the current object (initial from reset) is not from a g/o declaration in the parsed
// file. We need to use it for the first parsed g/o to keep things in sync.
if ( this.object && this.object.fromDeclaration === false ) {
this.object.name = name;
this.object.fromDeclaration = ( fromDeclaration !== false );
return;
}
var previousMaterial = ( this.object && typeof this.object.currentMaterial === 'function' ? this.object.currentMaterial() : undefined );
if ( this.object && typeof this.object._finalize === 'function' ) {
this.object._finalize( true );
}
this.object = {
name: name || '',
fromDeclaration: ( fromDeclaration !== false ),
geometry: {
vertices: [],
normals: [],
colors: [],
uvs: []
},
materials: [],
smooth: true,
startMaterial: function ( name, libraries ) {
var previous = this._finalize( false );
// New usemtl declaration overwrites an inherited material, except if faces were declared
// after the material, then it must be preserved for proper MultiMaterial continuation.
if ( previous && ( previous.inherited || previous.groupCount <= 0 ) ) {
this.materials.splice( previous.index, 1 );
}
var material = {
index: this.materials.length,
name: name || '',
mtllib: ( Array.isArray( libraries ) && libraries.length > 0 ? libraries[ libraries.length - 1 ] : '' ),
smooth: ( previous !== undefined ? previous.smooth : this.smooth ),
groupStart: ( previous !== undefined ? previous.groupEnd : 0 ),
groupEnd: - 1,
groupCount: - 1,
inherited: false,
clone: function ( index ) {
var cloned = {
index: ( typeof index === 'number' ? index : this.index ),
name: this.name,
mtllib: this.mtllib,
smooth: this.smooth,
groupStart: 0,
groupEnd: - 1,
groupCount: - 1,
inherited: false
};
cloned.clone = this.clone.bind( cloned );
return cloned;
}
};
this.materials.push( material );
return material;
},
currentMaterial: function () {
if ( this.materials.length > 0 ) {
return this.materials[ this.materials.length - 1 ];
}
return undefined;
},
_finalize: function ( end ) {
var lastMultiMaterial = this.currentMaterial();
if ( lastMultiMaterial && lastMultiMaterial.groupEnd === - 1 ) {
lastMultiMaterial.groupEnd = this.geometry.vertices.length / 3;
lastMultiMaterial.groupCount = lastMultiMaterial.groupEnd - lastMultiMaterial.groupStart;
lastMultiMaterial.inherited = false;
}
// Ignore objects tail materials if no face declarations followed them before a new o/g started.
if ( end && this.materials.length > 1 ) {
for ( var mi = this.materials.length - 1; mi >= 0; mi -- ) {
if ( this.materials[ mi ].groupCount <= 0 ) {
this.materials.splice( mi, 1 );
}
}
}
// Guarantee at least one empty material, this makes the creation later more straight forward.
if ( end && this.materials.length === 0 ) {
this.materials.push( {
name: '',
smooth: this.smooth
} );
}
return lastMultiMaterial;
}
};
// Inherit previous objects material.
// Spec tells us that a declared material must be set to all objects until a new material is declared.
// If a usemtl declaration is encountered while this new object is being parsed, it will
// overwrite the inherited material. Exception being that there was already face declarations
// to the inherited material, then it will be preserved for proper MultiMaterial continuation.
if ( previousMaterial && previousMaterial.name && typeof previousMaterial.clone === 'function' ) {
var declared = previousMaterial.clone( 0 );
declared.inherited = true;
this.object.materials.push( declared );
}
this.objects.push( this.object );
},
finalize: function () {
if ( this.object && typeof this.object._finalize === 'function' ) {
this.object._finalize( true );
}
},
parseVertexIndex: function ( value, len ) {
var index = parseInt( value, 10 );
return ( index >= 0 ? index - 1 : index + len / 3 ) * 3;
},
parseNormalIndex: function ( value, len ) {
var index = parseInt( value, 10 );
return ( index >= 0 ? index - 1 : index + len / 3 ) * 3;
},
parseUVIndex: function ( value, len ) {
var index = parseInt( value, 10 );
return ( index >= 0 ? index - 1 : index + len / 2 ) * 2;
},
addVertex: function ( a, b, c ) {
var src = this.vertices;
var dst = this.object.geometry.vertices;
dst.push( src[ a + 0 ], src[ a + 1 ], src[ a + 2 ] );
dst.push( src[ b + 0 ], src[ b + 1 ], src[ b + 2 ] );
dst.push( src[ c + 0 ], src[ c + 1 ], src[ c + 2 ] );
},
addVertexPoint: function ( a ) {
var src = this.vertices;
var dst = this.object.geometry.vertices;
dst.push( src[ a + 0 ], src[ a + 1 ], src[ a + 2 ] );
},
addVertexLine: function ( a ) {
var src = this.vertices;
var dst = this.object.geometry.vertices;
dst.push( src[ a + 0 ], src[ a + 1 ], src[ a + 2 ] );
},
addNormal: function ( a, b, c ) {
var src = this.normals;
var dst = this.object.geometry.normals;
dst.push( src[ a + 0 ], src[ a + 1 ], src[ a + 2 ] );
dst.push( src[ b + 0 ], src[ b + 1 ], src[ b + 2 ] );
dst.push( src[ c + 0 ], src[ c + 1 ], src[ c + 2 ] );
},
addColor: function ( a, b, c ) {
var src = this.colors;
var dst = this.object.geometry.colors;
dst.push( src[ a + 0 ], src[ a + 1 ], src[ a + 2 ] );
dst.push( src[ b + 0 ], src[ b + 1 ], src[ b + 2 ] );
dst.push( src[ c + 0 ], src[ c + 1 ], src[ c + 2 ] );
},
addUV: function ( a, b, c ) {
var src = this.uvs;
var dst = this.object.geometry.uvs;
dst.push( src[ a + 0 ], src[ a + 1 ] );
dst.push( src[ b + 0 ], src[ b + 1 ] );
dst.push( src[ c + 0 ], src[ c + 1 ] );
},
addUVLine: function ( a ) {
var src = this.uvs;
var dst = this.object.geometry.uvs;
dst.push( src[ a + 0 ], src[ a + 1 ] );
},
addFace: function ( a, b, c, ua, ub, uc, na, nb, nc ) {
var vLen = this.vertices.length;
var ia = this.parseVertexIndex( a, vLen );
var ib = this.parseVertexIndex( b, vLen );
var ic = this.parseVertexIndex( c, vLen );
this.addVertex( ia, ib, ic );
if ( this.colors.length > 0 ) {
this.addColor( ia, ib, ic );
}
if ( ua !== undefined && ua !== '' ) {
var uvLen = this.uvs.length;
ia = this.parseUVIndex( ua, uvLen );
ib = this.parseUVIndex( ub, uvLen );
ic = this.parseUVIndex( uc, uvLen );
this.addUV( ia, ib, ic );
}
if ( na !== undefined && na !== '' ) {
// Normals are many times the same. If so, skip function call and parseInt.
var nLen = this.normals.length;
ia = this.parseNormalIndex( na, nLen );
ib = na === nb ? ia : this.parseNormalIndex( nb, nLen );
ic = na === nc ? ia : this.parseNormalIndex( nc, nLen );
this.addNormal( ia, ib, ic );
}
},
addPointGeometry: function ( vertices ) {
this.object.geometry.type = 'Points';
var vLen = this.vertices.length;
for ( var vi = 0, l = vertices.length; vi < l; vi ++ ) {
this.addVertexPoint( this.parseVertexIndex( vertices[ vi ], vLen ) );
}
},
addLineGeometry: function ( vertices, uvs ) {
this.object.geometry.type = 'Line';
var vLen = this.vertices.length;
var uvLen = this.uvs.length;
for ( var vi = 0, l = vertices.length; vi < l; vi ++ ) {
this.addVertexLine( this.parseVertexIndex( vertices[ vi ], vLen ) );
}
for ( var uvi = 0, l = uvs.length; uvi < l; uvi ++ ) {
this.addUVLine( this.parseUVIndex( uvs[ uvi ], uvLen ) );
}
}
};
state.startObject( '', false );
return state;
}
//
function OBJLoader( manager ) {
THREE.Loader.call( this, manager );
this.materials = null;
}
OBJLoader.prototype = Object.assign( Object.create( THREE.Loader.prototype ), {
constructor: OBJLoader,
load: function ( url, onLoad, onProgress, onError ) {
var scope = this;
var loader = new THREE.FileLoader( scope.manager );
loader.setPath( this.path );
loader.load( url, function ( text ) {
onLoad( scope.parse( text ) );
}, onProgress, onError );
},
setMaterials: function ( materials ) {
this.materials = materials;
return this;
},
parse: function ( text ) {
var state = new ParserState();
if ( text.indexOf( '\r\n' ) !== - 1 ) {
// This is faster than String.split with regex that splits on both
text = text.replace( /\r\n/g, '\n' );
}
if ( text.indexOf( '\\\n' ) !== - 1 ) {
// join lines separated by a line continuation character (\)
text = text.replace( /\\\n/g, '' );
}
var lines = text.split( '\n' );
var line = '', lineFirstChar = '';
var lineLength = 0;
var result = [];
// Faster to just trim left side of the line. Use if available.
var trimLeft = ( typeof ''.trimLeft === 'function' );
for ( var i = 0, l = lines.length; i < l; i ++ ) {
line = lines[ i ];
line = trimLeft ? line.trimLeft() : line.trim();
lineLength = line.length;
if ( lineLength === 0 ) continue;
lineFirstChar = line.charAt( 0 );
// @todo invoke passed in handler if any
if ( lineFirstChar === '#' ) continue;
if ( lineFirstChar === 'v' ) {
var data = line.split( /\s+/ );
switch ( data[ 0 ] ) {
case 'v':
state.vertices.push(
parseFloat( data[ 1 ] ),
parseFloat( data[ 2 ] ),
parseFloat( data[ 3 ] )
);
if ( data.length >= 7 ) {
state.colors.push(
parseFloat( data[ 4 ] ),
parseFloat( data[ 5 ] ),
parseFloat( data[ 6 ] )
);
}
break;
case 'vn':
state.normals.push(
parseFloat( data[ 1 ] ),
parseFloat( data[ 2 ] ),
parseFloat( data[ 3 ] )
);
break;
case 'vt':
state.uvs.push(
parseFloat( data[ 1 ] ),
parseFloat( data[ 2 ] )
);
break;
}
} else if ( lineFirstChar === 'f' ) {
var lineData = line.substr( 1 ).trim();
var vertexData = lineData.split( /\s+/ );
var faceVertices = [];
// Parse the face vertex data into an easy to work with format
for ( var j = 0, jl = vertexData.length; j < jl; j ++ ) {
var vertex = vertexData[ j ];
if ( vertex.length > 0 ) {
var vertexParts = vertex.split( '/' );
faceVertices.push( vertexParts );
}
}
// Draw an edge between the first vertex and all subsequent vertices to form an n-gon
var v1 = faceVertices[ 0 ];
for ( var j = 1, jl = faceVertices.length - 1; j < jl; j ++ ) {
var v2 = faceVertices[ j ];
var v3 = faceVertices[ j + 1 ];
state.addFace(
v1[ 0 ], v2[ 0 ], v3[ 0 ],
v1[ 1 ], v2[ 1 ], v3[ 1 ],
v1[ 2 ], v2[ 2 ], v3[ 2 ]
);
}
} else if ( lineFirstChar === 'l' ) {
var lineParts = line.substring( 1 ).trim().split( " " );
var lineVertices = [], lineUVs = [];
if ( line.indexOf( "/" ) === - 1 ) {
lineVertices = lineParts;
} else {
for ( var li = 0, llen = lineParts.length; li < llen; li ++ ) {
var parts = lineParts[ li ].split( "/" );
if ( parts[ 0 ] !== "" ) lineVertices.push( parts[ 0 ] );
if ( parts[ 1 ] !== "" ) lineUVs.push( parts[ 1 ] );
}
}
state.addLineGeometry( lineVertices, lineUVs );
} else if ( lineFirstChar === 'p' ) {
var lineData = line.substr( 1 ).trim();
var pointData = lineData.split( " " );
state.addPointGeometry( pointData );
} else if ( ( result = object_pattern.exec( line ) ) !== null ) {
// o object_name
// or
// g group_name
// WORKAROUND: https://bugs.chromium.org/p/v8/issues/detail?id=2869
// var name = result[ 0 ].substr( 1 ).trim();
var name = ( " " + result[ 0 ].substr( 1 ).trim() ).substr( 1 );
state.startObject( name );
} else if ( material_use_pattern.test( line ) ) {
// material
state.object.startMaterial( line.substring( 7 ).trim(), state.materialLibraries );
} else if ( material_library_pattern.test( line ) ) {
// mtl file
state.materialLibraries.push( line.substring( 7 ).trim() );
} else if ( map_use_pattern.test( line ) ) {
// the line is parsed but ignored since the loader assumes textures are defined MTL files
// (according to https://www.okino.com/conv/imp_wave.htm, 'usemap' is the old-style Wavefront texture reference method)
console.warn( 'THREE.OBJLoader: Rendering identifier "usemap" not supported. Textures must be defined in MTL files.' );
} else if ( lineFirstChar === 's' ) {
result = line.split( ' ' );
// smooth shading
// @todo Handle files that have varying smooth values for a set of faces inside one geometry,
// but does not define a usemtl for each face set.
// This should be detected and a dummy material created (later MultiMaterial and geometry groups).
// This requires some care to not create extra material on each smooth value for "normal" obj files.
// where explicit usemtl defines geometry groups.
// Example asset: examples/models/obj/cerberus/Cerberus.obj
/*
* http://paulbourke.net/dataformats/obj/
* or
* http://www.cs.utah.edu/~boulos/cs3505/obj_spec.pdf
*
* From chapter "Grouping" Syntax explanation "s group_number":
* "group_number is the smoothing group number. To turn off smoothing groups, use a value of 0 or off.
* Polygonal elements use group numbers to put elements in different smoothing groups. For free-form
* surfaces, smoothing groups are either turned on or off; there is no difference between values greater
* than 0."
*/
if ( result.length > 1 ) {
var value = result[ 1 ].trim().toLowerCase();
state.object.smooth = ( value !== '0' && value !== 'off' );
} else {
// ZBrush can produce "s" lines #11707
state.object.smooth = true;
}
var material = state.object.currentMaterial();
if ( material ) material.smooth = state.object.smooth;
} else {
// Handle null terminated files without exception
if ( line === '\0' ) continue;
console.warn( 'THREE.OBJLoader: Unexpected line: "' + line + '"' );
}
}
state.finalize();
var container = new THREE.Group();
container.materialLibraries = [].concat( state.materialLibraries );
for ( var i = 0, l = state.objects.length; i < l; i ++ ) {
var object = state.objects[ i ];
var geometry = object.geometry;
var materials = object.materials;
var isLine = ( geometry.type === 'Line' );
var isPoints = ( geometry.type === 'Points' );
var hasVertexColors = false;
// Skip o/g line declarations that did not follow with any faces
if ( geometry.vertices.length === 0 ) continue;
var buffergeometry = new THREE.BufferGeometry();
buffergeometry.setAttribute( 'position', new THREE.Float32BufferAttribute( geometry.vertices, 3 ) );
if ( geometry.normals.length > 0 ) {
buffergeometry.setAttribute( 'normal', new THREE.Float32BufferAttribute( geometry.normals, 3 ) );
} else {
buffergeometry.computeVertexNormals();
}
if ( geometry.colors.length > 0 ) {
hasVertexColors = true;
buffergeometry.setAttribute( 'color', new THREE.Float32BufferAttribute( geometry.colors, 3 ) );
}
if ( geometry.uvs.length > 0 ) {
buffergeometry.setAttribute( 'uv', new THREE.Float32BufferAttribute( geometry.uvs, 2 ) );
}
// Create materials
var createdMaterials = [];
for ( var mi = 0, miLen = materials.length; mi < miLen; mi ++ ) {
var sourceMaterial = materials[ mi ];
var materialHash = sourceMaterial.name + '_' + sourceMaterial.smooth + '_' + hasVertexColors;
var material = state.materials[ materialHash ];
if ( this.materials !== null ) {
material = this.materials.create( sourceMaterial.name );
// mtl etc. loaders probably can't create line materials correctly, copy properties to a line material.
if ( isLine && material && ! ( material instanceof THREE.LineBasicMaterial ) ) {
var materialLine = new THREE.LineBasicMaterial();
THREE.Material.prototype.copy.call( materialLine, material );
materialLine.color.copy( material.color );
material = materialLine;
} else if ( isPoints && material && ! ( material instanceof THREE.PointsMaterial ) ) {
var materialPoints = new THREE.PointsMaterial( { size: 10, sizeAttenuation: false } );
THREE.Material.prototype.copy.call( materialPoints, material );
materialPoints.color.copy( material.color );
materialPoints.map = material.map;
material = materialPoints;
}
}
if ( material === undefined ) {
if ( isLine ) {
material = new THREE.LineBasicMaterial();
} else if ( isPoints ) {
material = new THREE.PointsMaterial( { size: 1, sizeAttenuation: false } );
} else {
material = new THREE.MeshPhongMaterial();
}
material.name = sourceMaterial.name;
material.flatShading = sourceMaterial.smooth ? false : true;
material.vertexColors = hasVertexColors ? THREE.VertexColors : THREE.NoColors;
state.materials[ materialHash ] = material;
}
createdMaterials.push( material );
}
// Create mesh
var mesh;
if ( createdMaterials.length > 1 ) {
for ( var mi = 0, miLen = materials.length; mi < miLen; mi ++ ) {
var sourceMaterial = materials[ mi ];
buffergeometry.addGroup( sourceMaterial.groupStart, sourceMaterial.groupCount, mi );
}
if ( isLine ) {
mesh = new THREE.LineSegments( buffergeometry, createdMaterials );
} else if ( isPoints ) {
mesh = new THREE.Points( buffergeometry, createdMaterials );
} else {
mesh = new THREE.Mesh( buffergeometry, createdMaterials );
}
} else {
if ( isLine ) {
mesh = new THREE.LineSegments( buffergeometry, createdMaterials[ 0 ] );
} else if ( isPoints ) {
mesh = new THREE.Points( buffergeometry, createdMaterials[ 0 ] );
} else {
mesh = new THREE.Mesh( buffergeometry, createdMaterials[ 0 ] );
}
}
mesh.name = object.name;
container.add( mesh );
}
return container;
}
} );
return OBJLoader;
} )();
Raw
back.bmp
This file has been truncated, but you can view the full file.
View raw
Raw
bottom.bmp
View raw

(Sorry about that, but we can’t show files that are this big right now.)

Raw
car.mtl
View raw

(Sorry about that, but we can’t show files that are this big right now.)

Raw
car.obj
View raw

(Sorry about that, but we can’t show files that are this big right now.)

Raw
front.bmp
View raw

(Sorry about that, but we can’t show files that are this big right now.)

Raw
index.html
View raw

(Sorry about that, but we can’t show files that are this big right now.)

Raw
left.bmp
View raw

(Sorry about that, but we can’t show files that are this big right now.)

Raw
right.bmp
View raw

(Sorry about that, but we can’t show files that are this big right now.)

Raw
top.bmp
View raw

(Sorry about that, but we can’t show files that are this big right now.)

Raw
trackball-controls.min.js
View raw

(Sorry about that, but we can’t show files that are this big right now.)

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment