107 lines
1.9 KiB
JavaScript
107 lines
1.9 KiB
JavaScript
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import {
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BufferGeometry,
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Color,
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FileLoader,
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Float32BufferAttribute,
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Loader
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} from 'three';
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class XYZLoader extends Loader {
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load( url, onLoad, onProgress, onError ) {
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const scope = this;
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const loader = new FileLoader( this.manager );
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loader.setPath( this.path );
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loader.setRequestHeader( this.requestHeader );
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loader.setWithCredentials( this.withCredentials );
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loader.load( url, function ( text ) {
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try {
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onLoad( scope.parse( text ) );
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} catch ( e ) {
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if ( onError ) {
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onError( e );
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} else {
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console.error( e );
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}
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scope.manager.itemError( url );
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}
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}, onProgress, onError );
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}
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parse( text ) {
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const lines = text.split( '\n' );
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const vertices = [];
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const colors = [];
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const color = new Color();
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for ( let line of lines ) {
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line = line.trim();
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if ( line.charAt( 0 ) === '#' ) continue; // skip comments
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const lineValues = line.split( /\s+/ );
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if ( lineValues.length === 3 ) {
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// XYZ
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vertices.push( parseFloat( lineValues[ 0 ] ) );
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vertices.push( parseFloat( lineValues[ 1 ] ) );
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vertices.push( parseFloat( lineValues[ 2 ] ) );
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}
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if ( lineValues.length === 6 ) {
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// XYZRGB
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vertices.push( parseFloat( lineValues[ 0 ] ) );
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vertices.push( parseFloat( lineValues[ 1 ] ) );
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vertices.push( parseFloat( lineValues[ 2 ] ) );
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const r = parseFloat( lineValues[ 3 ] ) / 255;
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const g = parseFloat( lineValues[ 4 ] ) / 255;
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const b = parseFloat( lineValues[ 5 ] ) / 255;
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color.set( r, g, b ).convertSRGBToLinear();
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colors.push( color.r, color.g, color.b );
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}
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}
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const geometry = new BufferGeometry();
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geometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
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if ( colors.length > 0 ) {
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geometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );
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}
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return geometry;
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}
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}
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export { XYZLoader };
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