Accueil / npm / three@0.152.1 / examples / jsm / lines / LineGeometry.js
LineGeometry.js
import { LineSegmentsGeometry } from '../lines/LineSegmentsGeometry.js';
class LineGeometry extends LineSegmentsGeometry {
constructor() {
super();
this.isLineGeometry = true;
this.type = 'LineGeometry';
}
setPositions( array ) {
// converts [ x1, y1, z1, x2, y2, z2, ... ] to pairs format
const length = array.length - 3;
const points = new Float32Array( 2 * length );
for ( let i = 0; i < length; i += 3 ) {
points[ 2 * i ] = array[ i ];
points[ 2 * i + 1 ] = array[ i + 1 ];
points[ 2 * i + 2 ] = array[ i + 2 ];
points[ 2 * i + 3 ] = array[ i + 3 ];
points[ 2 * i + 4 ] = array[ i + 4 ];
points[ 2 * i + 5 ] = array[ i + 5 ];
}
super.setPositions( points );
return this;
}
setColors( array ) {
// converts [ r1, g1, b1, r2, g2, b2, ... ] to pairs format
const length = array.length - 3;
const colors = new Float32Array( 2 * length );
for ( let i = 0; i < length; i += 3 ) {
colors[ 2 * i ] = array[ i ];
colors[ 2 * i + 1 ] = array[ i + 1 ];
colors[ 2 * i + 2 ] = array[ i + 2 ];
colors[ 2 * i + 3 ] = array[ i + 3 ];
colors[ 2 * i + 4 ] = array[ i + 4 ];
colors[ 2 * i + 5 ] = array[ i + 5 ];
}
super.setColors( colors );
return this;
}
fromLine( line ) {
const geometry = line.geometry;
this.setPositions( geometry.attributes.position.array ); // assumes non-indexed
// set colors, maybe
return this;
}
}
export { LineGeometry };