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File Name : MTLLoader.js

/**
 * Loads a Wavefront .mtl file specifying materials
 *
 * @author angelxuanchang
 */

THREE.MTLLoader = function( baseUrl, options, crossOrigin ) {

this.baseUrl = baseUrl;
	this.options = options;
	this.crossOrigin = crossOrigin;

};

THREE.MTLLoader.prototype = {

constructor: THREE.MTLLoader,

load: function ( url, onLoad, onProgress, onError ) {

var scope = this;

var loader = new THREE.XHRLoader();
		loader.setCrossOrigin( this.crossOrigin );
		loader.load( url, function ( text ) {

onLoad( scope.parse( text ) );

}, onProgress, onError );

/**
	 * Parses loaded MTL file
	 * @param text - Content of MTL file
	 * @return {THREE.MTLLoader.MaterialCreator}
	 */
	parse: function ( text ) {

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 ( info ) {

if ( key === "ka" || key === "kd" || key === "ks" ) {

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.baseUrl, this.options );
		materialCreator.crossOrigin = this.crossOrigin
		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
 *                  invertTransparency: If transparency need to be inverted (inversion is needed if d = 0 is fully opaque)
 *                                      Default: false (d = 1 is fully opaque)
 * @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,

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[ 1 ] === 0 ) {

// ignore

save = false;

}
						}

break;

case 'd':

// According to MTL format (http://paulbourke.net/dataformats/mtl/):
						//   d is dissolve for current material
						//   factor of 1.0 is fully opaque, a factor of 0 is fully dissolved (completely transparent)

if ( this.options && this.options.invertTransparency ) {

value = 1 - value;

}

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 mat = this.materialsInfo[ materialName ];
		var params = {

name: materialName,
			side: this.side

};

for ( var prop in mat ) {

var value = mat[ prop ];

switch ( prop.toLowerCase() ) {

// Ns is material specular exponent

case 'kd':

// Diffuse color (color under white light) using RGB values

params[ 'diffuse' ] = new THREE.Color().fromArray( value );

break;

case 'ka':

// Ambient color (color under shadow) using RGB values

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 'map_kd':

// Diffuse texture map

params[ 'map' ] = this.loadTexture( this.baseUrl + value );
					params[ 'map' ].wrapS = this.wrap;
					params[ 'map' ].wrapT = this.wrap;

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'] = value;

break;

case 'd':

// According to MTL format (http://paulbourke.net/dataformats/mtl/):
					//   d is dissolve for current material
					//   factor of 1.0 is fully opaque, a factor of 0 is fully dissolved (completely transparent)

if ( value < 1 ) {

params['transparent'] = true;
						params['opacity'] = value;

}

break;

case 'map_bump':
				case 'bump':

// Bump texture map

if ( params[ 'bumpMap' ] ) break; // Avoid loading twice.

params[ 'bumpMap' ] = this.loadTexture( this.baseUrl + value );
					params[ 'bumpMap' ].wrapS = this.wrap;
					params[ 'bumpMap' ].wrapT = this.wrap;

break;

default:
					break;

}

if ( params[ 'diffuse' ] ) {

params[ 'color' ] = params[ 'diffuse' ];

}

this.materials[ materialName ] = new THREE.MeshPhongMaterial( params );
		return this.materials[ materialName ];

loadTexture: function ( url, mapping, onLoad, onError ) {

var texture;
		var loader = THREE.Loader.Handlers.get( url );

if ( loader !== null ) {

texture = loader.load( url, onLoad );

} else {

texture = new THREE.Texture();

loader = new THREE.ImageLoader();
			loader.crossOrigin = this.crossOrigin;
			loader.load( url, function ( image ) {

texture.image = THREE.MTLLoader.ensurePowerOfTwo_( image );
				texture.needsUpdate = true;

if ( onLoad ) onLoad( texture );

} );

}

if ( mapping !== undefined ) texture.mapping = mapping;

return texture;

}

};

THREE.MTLLoader.ensurePowerOfTwo_ = function ( image ) {

if ( ! THREE.Math.isPowerOfTwo( image.width ) || ! THREE.Math.isPowerOfTwo( image.height ) ) {

var canvas = document.createElement( "canvas" );
		canvas.width = THREE.MTLLoader.nextHighestPowerOfTwo_( image.width );
		canvas.height = THREE.MTLLoader.nextHighestPowerOfTwo_( image.height );

var ctx = canvas.getContext("2d");
		ctx.drawImage( image, 0, 0, image.width, image.height, 0, 0, canvas.width, canvas.height );
		return canvas;

}

return image;

};

THREE.MTLLoader.nextHighestPowerOfTwo_ = function( x ) {

-- x;

for ( var i = 1; i < 32; i <<= 1 ) {

x = x | x >> i;

}

return x + 1;

};

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Name	Type	Size	Permission	Last Modified	Actions
.	dir	-	0555	2021-11-10 09:11:29	Buat Folder Buat File Info
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DDSLoader.js	text/plain	7.06 KB	0644	2015-07-12 07:34:30	edit rename chmod hapus
Detector.js	text/html	3.75 KB	0644	2015-07-12 07:34:31	edit rename chmod hapus
MTLLoader.js	text/plain	10.57 KB	0644	2015-07-12 07:34:31	edit rename chmod hapus
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stats.min.js	text/plain	3.95 KB	0644	2015-07-12 07:34:31	edit rename chmod hapus
three.min.js	text/plain	411.84 KB	0644	2015-07-12 07:34:40	edit rename chmod hapus