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import { LinearFilter, LinearMipmapLinearFilter, ClampToEdgeWrapping } from '../constants.js';
import { FileLoader } from './FileLoader.js';
import { DataTexture } from '../textures/DataTexture.js';
import { Loader } from './Loader.js';
/**
* Abstract Base class to load generic binary textures formats (rgbe, hdr, ...)
*
* Sub classes have to implement the parse() method which will be used in load().
*/
class DataTextureLoader extends Loader {
constructor( manager ) {
super( manager );
}
load( url, onLoad, onProgress, onError ) {
const scope = this;
const texture = new DataTexture();
const loader = new FileLoader( this.manager );
loader.setResponseType( 'arraybuffer' );
loader.setRequestHeader( this.requestHeader );
loader.setPath( this.path );
loader.setWithCredentials( scope.withCredentials );
loader.load( url, function ( buffer ) {
let texData;
try {
texData = scope.parse( buffer );
} catch ( error ) {
if ( onError !== undefined ) {
onError( error );
} else {
console.error( error );
return;
}
}
if ( texData.image !== undefined ) {
texture.image = texData.image;
} else if ( texData.data !== undefined ) {
texture.image.width = texData.width;
texture.image.height = texData.height;
texture.image.data = texData.data;
}
texture.wrapS = texData.wrapS !== undefined ? texData.wrapS : ClampToEdgeWrapping;
texture.wrapT = texData.wrapT !== undefined ? texData.wrapT : ClampToEdgeWrapping;
texture.magFilter = texData.magFilter !== undefined ? texData.magFilter : LinearFilter;
texture.minFilter = texData.minFilter !== undefined ? texData.minFilter : LinearFilter;
texture.anisotropy = texData.anisotropy !== undefined ? texData.anisotropy : 1;
if ( texData.colorSpace !== undefined ) {
texture.colorSpace = texData.colorSpace;
} else if ( texData.encoding !== undefined ) { // @deprecated, r152
texture.encoding = texData.encoding;
}
if ( texData.flipY !== undefined ) {
texture.flipY = texData.flipY;
}
if ( texData.format !== undefined ) {
texture.format = texData.format;
}
if ( texData.type !== undefined ) {
texture.type = texData.type;
}
if ( texData.mipmaps !== undefined ) {
texture.mipmaps = texData.mipmaps;
texture.minFilter = LinearMipmapLinearFilter; // presumably...
}
if ( texData.mipmapCount === 1 ) {
texture.minFilter = LinearFilter;
}
if ( texData.generateMipmaps !== undefined ) {
texture.generateMipmaps = texData.generateMipmaps;
}
texture.needsUpdate = true;
if ( onLoad ) onLoad( texture, texData );
}, onProgress, onError );
return texture;
}
}
export { DataTextureLoader };