BLUE

Edit File Size: 2.00 KB

/var/www/uibuilder.cmshelp.dk/httpdocs/node_modules/three/examples/jsm/helpers/RectAreaLightHelper.js

Text Base64

import {
	BackSide,
	BufferGeometry,
	Float32BufferAttribute,
	Line,
	LineBasicMaterial,
	Mesh,
	MeshBasicMaterial
} from 'three';

/**
 *  This helper must be added as a child of the light
 */

class RectAreaLightHelper extends Line {

constructor( light, color ) {

const positions = [ 1, 1, 0, - 1, 1, 0, - 1, - 1, 0, 1, - 1, 0, 1, 1, 0 ];

const geometry = new BufferGeometry();
		geometry.setAttribute( 'position', new Float32BufferAttribute( positions, 3 ) );
		geometry.computeBoundingSphere();

const material = new LineBasicMaterial( { fog: false } );

super( geometry, material );

this.light = light;
		this.color = color; // optional hardwired color for the helper
		this.type = 'RectAreaLightHelper';

const positions2 = [ 1, 1, 0, - 1, 1, 0, - 1, - 1, 0, 1, 1, 0, - 1, - 1, 0, 1, - 1, 0 ];

const geometry2 = new BufferGeometry();
		geometry2.setAttribute( 'position', new Float32BufferAttribute( positions2, 3 ) );
		geometry2.computeBoundingSphere();

this.add( new Mesh( geometry2, new MeshBasicMaterial( { side: BackSide, fog: false } ) ) );

}

updateMatrixWorld() {

this.scale.set( 0.5 * this.light.width, 0.5 * this.light.height, 1 );

if ( this.color !== undefined ) {

this.material.color.set( this.color );
			this.children[ 0 ].material.color.set( this.color );

} else {

this.material.color.copy( this.light.color ).multiplyScalar( this.light.intensity );

// prevent hue shift
			const c = this.material.color;
			const max = Math.max( c.r, c.g, c.b );
			if ( max > 1 ) c.multiplyScalar( 1 / max );

this.children[ 0 ].material.color.copy( this.material.color );

}

// ignore world scale on light
		this.matrixWorld.extractRotation( this.light.matrixWorld ).scale( this.scale ).copyPosition( this.light.matrixWorld );

this.children[ 0 ].matrixWorld.copy( this.matrixWorld );

}

dispose() {

this.geometry.dispose();
		this.material.dispose();
		this.children[ 0 ].geometry.dispose();
		this.children[ 0 ].material.dispose();

}

export { RectAreaLightHelper };

Exit & Reset Text mode: syntax highlighting auto-detects file type.

Name	Size	Perms	Modified	Actions
LightProbeHelper.js	2.64 KB	lrw-r--r--	2025-03-28 11:04:38	Edit Download recursive recursive
LightProbeHelperGPU.js	1.27 KB	lrw-r--r--	2025-03-28 11:04:38	Edit Download recursive recursive
OctreeHelper.js	1.93 KB	lrw-r--r--	2025-03-28 11:04:38	Edit Download recursive recursive
PositionalAudioHelper.js	2.65 KB	lrw-r--r--	2025-03-28 11:04:39	Edit Download recursive recursive
RectAreaLightHelper.js	2.00 KB	lrw-r--r--	2025-03-28 11:04:39	Edit Download recursive recursive
TextureHelper.js	4.33 KB	lrw-r--r--	2025-03-28 11:04:39	Edit Download recursive recursive
TextureHelperGPU.js	3.63 KB	lrw-r--r--	2025-03-28 11:04:39	Edit Download recursive recursive
VertexNormalsHelper.js	1.81 KB	lrw-r--r--	2025-03-28 11:04:39	Edit Download recursive recursive
VertexTangentsHelper.js	1.62 KB	lrw-r--r--	2025-03-28 11:04:39	Edit Download recursive recursive
ViewHelper.js	8.41 KB	lrw-r--r--	2025-03-28 11:04:39	Edit Download recursive recursive

Directory Contents