80 lines
1.4 KiB
JavaScript
80 lines
1.4 KiB
JavaScript
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import { LineSegmentsGeometry } from '../lines/LineSegmentsGeometry.js';
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class LineGeometry extends LineSegmentsGeometry {
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constructor() {
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super();
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this.isLineGeometry = true;
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this.type = 'LineGeometry';
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}
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setPositions( array ) {
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// converts [ x1, y1, z1, x2, y2, z2, ... ] to pairs format
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const length = array.length - 3;
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const points = new Float32Array( 2 * length );
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for ( let i = 0; i < length; i += 3 ) {
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points[ 2 * i ] = array[ i ];
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points[ 2 * i + 1 ] = array[ i + 1 ];
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points[ 2 * i + 2 ] = array[ i + 2 ];
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points[ 2 * i + 3 ] = array[ i + 3 ];
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points[ 2 * i + 4 ] = array[ i + 4 ];
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points[ 2 * i + 5 ] = array[ i + 5 ];
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}
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super.setPositions( points );
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return this;
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}
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setColors( array ) {
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// converts [ r1, g1, b1, r2, g2, b2, ... ] to pairs format
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const length = array.length - 3;
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const colors = new Float32Array( 2 * length );
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for ( let i = 0; i < length; i += 3 ) {
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colors[ 2 * i ] = array[ i ];
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colors[ 2 * i + 1 ] = array[ i + 1 ];
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colors[ 2 * i + 2 ] = array[ i + 2 ];
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colors[ 2 * i + 3 ] = array[ i + 3 ];
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colors[ 2 * i + 4 ] = array[ i + 4 ];
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colors[ 2 * i + 5 ] = array[ i + 5 ];
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}
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super.setColors( colors );
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return this;
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}
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fromLine( line ) {
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const geometry = line.geometry;
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this.setPositions( geometry.attributes.position.array ); // assumes non-indexed
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// set colors, maybe
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return this;
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}
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}
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export { LineGeometry };
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