fireball/lib/textures/Texture.js

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2018-12-25 13:59:22 +00:00
/**
* @author mrdoob / http://mrdoob.com/
* @author alteredq / http://alteredqualia.com/
* @author szimek / https://github.com/szimek/
*/
import { EventDispatcher } from '../core/EventDispatcher.js';
import { UVMapping } from '../constants.js';
import { MirroredRepeatWrapping, ClampToEdgeWrapping, RepeatWrapping, LinearEncoding, UnsignedByteType, RGBAFormat, LinearMipMapLinearFilter, LinearFilter } from '../constants.js';
import { _Math } from '../math/Math.js';
import { Vector2 } from '../math/Vector2.js';
import { Matrix3 } from '../math/Matrix3.js';
import { ImageUtils } from '../extras/ImageUtils.js';
var textureId = 0;
function Texture( image, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding ) {
Object.defineProperty( this, 'id', { value: textureId ++ } );
this.uuid = _Math.generateUUID();
this.name = '';
this.image = image !== undefined ? image : Texture.DEFAULT_IMAGE;
this.mipmaps = [];
this.mapping = mapping !== undefined ? mapping : Texture.DEFAULT_MAPPING;
this.wrapS = wrapS !== undefined ? wrapS : ClampToEdgeWrapping;
this.wrapT = wrapT !== undefined ? wrapT : ClampToEdgeWrapping;
this.magFilter = magFilter !== undefined ? magFilter : LinearFilter;
this.minFilter = minFilter !== undefined ? minFilter : LinearMipMapLinearFilter;
this.anisotropy = anisotropy !== undefined ? anisotropy : 1;
this.format = format !== undefined ? format : RGBAFormat;
this.type = type !== undefined ? type : UnsignedByteType;
this.offset = new Vector2( 0, 0 );
this.repeat = new Vector2( 1, 1 );
this.center = new Vector2( 0, 0 );
this.rotation = 0;
this.matrixAutoUpdate = true;
this.matrix = new Matrix3();
this.generateMipmaps = true;
this.premultiplyAlpha = false;
this.flipY = true;
this.unpackAlignment = 4; // valid values: 1, 2, 4, 8 (see http://www.khronos.org/opengles/sdk/docs/man/xhtml/glPixelStorei.xml)
// Values of encoding !== THREE.LinearEncoding only supported on map, envMap and emissiveMap.
//
// Also changing the encoding after already used by a Material will not automatically make the Material
// update. You need to explicitly call Material.needsUpdate to trigger it to recompile.
this.encoding = encoding !== undefined ? encoding : LinearEncoding;
this.version = 0;
this.onUpdate = null;
}
Texture.DEFAULT_IMAGE = undefined;
Texture.DEFAULT_MAPPING = UVMapping;
Texture.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {
constructor: Texture,
isTexture: true,
updateMatrix: function () {
this.matrix.setUvTransform( this.offset.x, this.offset.y, this.repeat.x, this.repeat.y, this.rotation, this.center.x, this.center.y );
},
clone: function () {
return new this.constructor().copy( this );
},
copy: function ( source ) {
this.name = source.name;
this.image = source.image;
this.mipmaps = source.mipmaps.slice( 0 );
this.mapping = source.mapping;
this.wrapS = source.wrapS;
this.wrapT = source.wrapT;
this.magFilter = source.magFilter;
this.minFilter = source.minFilter;
this.anisotropy = source.anisotropy;
this.format = source.format;
this.type = source.type;
this.offset.copy( source.offset );
this.repeat.copy( source.repeat );
this.center.copy( source.center );
this.rotation = source.rotation;
this.matrixAutoUpdate = source.matrixAutoUpdate;
this.matrix.copy( source.matrix );
this.generateMipmaps = source.generateMipmaps;
this.premultiplyAlpha = source.premultiplyAlpha;
this.flipY = source.flipY;
this.unpackAlignment = source.unpackAlignment;
this.encoding = source.encoding;
return this;
},
toJSON: function ( meta ) {
var isRootObject = ( meta === undefined || typeof meta === 'string' );
if ( ! isRootObject && meta.textures[ this.uuid ] !== undefined ) {
return meta.textures[ this.uuid ];
}
var output = {
metadata: {
version: 4.5,
type: 'Texture',
generator: 'Texture.toJSON'
},
uuid: this.uuid,
name: this.name,
mapping: this.mapping,
repeat: [ this.repeat.x, this.repeat.y ],
offset: [ this.offset.x, this.offset.y ],
center: [ this.center.x, this.center.y ],
rotation: this.rotation,
wrap: [ this.wrapS, this.wrapT ],
format: this.format,
minFilter: this.minFilter,
magFilter: this.magFilter,
anisotropy: this.anisotropy,
flipY: this.flipY
};
if ( this.image !== undefined ) {
// TODO: Move to THREE.Image
var image = this.image;
if ( image.uuid === undefined ) {
image.uuid = _Math.generateUUID(); // UGH
}
if ( ! isRootObject && meta.images[ image.uuid ] === undefined ) {
var url;
if ( Array.isArray( image ) ) {
// process array of images e.g. CubeTexture
url = [];
for ( var i = 0, l = image.length; i < l; i ++ ) {
url.push( ImageUtils.getDataURL( image[ i ] ) );
}
} else {
// process single image
url = ImageUtils.getDataURL( image );
}
meta.images[ image.uuid ] = {
uuid: image.uuid,
url: url
};
}
output.image = image.uuid;
}
if ( ! isRootObject ) {
meta.textures[ this.uuid ] = output;
}
return output;
},
dispose: function () {
this.dispatchEvent( { type: 'dispose' } );
},
transformUv: function ( uv ) {
if ( this.mapping !== UVMapping ) return uv;
uv.applyMatrix3( this.matrix );
if ( uv.x < 0 || uv.x > 1 ) {
switch ( this.wrapS ) {
case RepeatWrapping:
uv.x = uv.x - Math.floor( uv.x );
break;
case ClampToEdgeWrapping:
uv.x = uv.x < 0 ? 0 : 1;
break;
case MirroredRepeatWrapping:
if ( Math.abs( Math.floor( uv.x ) % 2 ) === 1 ) {
uv.x = Math.ceil( uv.x ) - uv.x;
} else {
uv.x = uv.x - Math.floor( uv.x );
}
break;
}
}
if ( uv.y < 0 || uv.y > 1 ) {
switch ( this.wrapT ) {
case RepeatWrapping:
uv.y = uv.y - Math.floor( uv.y );
break;
case ClampToEdgeWrapping:
uv.y = uv.y < 0 ? 0 : 1;
break;
case MirroredRepeatWrapping:
if ( Math.abs( Math.floor( uv.y ) % 2 ) === 1 ) {
uv.y = Math.ceil( uv.y ) - uv.y;
} else {
uv.y = uv.y - Math.floor( uv.y );
}
break;
}
}
if ( this.flipY ) {
uv.y = 1 - uv.y;
}
return uv;
}
} );
Object.defineProperty( Texture.prototype, "needsUpdate", {
set: function ( value ) {
if ( value === true ) this.version ++;
}
} );
export { Texture };