99 lines
2.4 KiB
JavaScript
99 lines
2.4 KiB
JavaScript
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/**
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* @author alteredq / http://alteredqualia.com/
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* @author mrdoob / http://mrdoob.com/
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* @author WestLangley / http://github.com/WestLangley
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*/
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import { Vector3 } from '../math/Vector3.js';
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import { Object3D } from '../core/Object3D.js';
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import { Line } from '../objects/Line.js';
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import { Float32BufferAttribute } from '../core/BufferAttribute.js';
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import { BufferGeometry } from '../core/BufferGeometry.js';
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import { LineBasicMaterial } from '../materials/LineBasicMaterial.js';
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function DirectionalLightHelper( light, size, color ) {
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Object3D.call( this );
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this.light = light;
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this.light.updateMatrixWorld();
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this.matrix = light.matrixWorld;
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this.matrixAutoUpdate = false;
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this.color = color;
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if ( size === undefined ) size = 1;
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var geometry = new BufferGeometry();
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geometry.addAttribute( 'position', new Float32BufferAttribute( [
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- size, size, 0,
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size, size, 0,
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size, - size, 0,
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- size, - size, 0,
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- size, size, 0
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], 3 ) );
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var material = new LineBasicMaterial( { fog: false } );
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this.lightPlane = new Line( geometry, material );
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this.add( this.lightPlane );
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geometry = new BufferGeometry();
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geometry.addAttribute( 'position', new Float32BufferAttribute( [ 0, 0, 0, 0, 0, 1 ], 3 ) );
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this.targetLine = new Line( geometry, material );
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this.add( this.targetLine );
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this.update();
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}
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DirectionalLightHelper.prototype = Object.create( Object3D.prototype );
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DirectionalLightHelper.prototype.constructor = DirectionalLightHelper;
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DirectionalLightHelper.prototype.dispose = function () {
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this.lightPlane.geometry.dispose();
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this.lightPlane.material.dispose();
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this.targetLine.geometry.dispose();
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this.targetLine.material.dispose();
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};
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DirectionalLightHelper.prototype.update = function () {
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var v1 = new Vector3();
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var v2 = new Vector3();
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var v3 = new Vector3();
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return function update() {
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v1.setFromMatrixPosition( this.light.matrixWorld );
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v2.setFromMatrixPosition( this.light.target.matrixWorld );
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v3.subVectors( v2, v1 );
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this.lightPlane.lookAt( v3 );
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if ( this.color !== undefined ) {
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this.lightPlane.material.color.set( this.color );
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this.targetLine.material.color.set( this.color );
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} else {
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this.lightPlane.material.color.copy( this.light.color );
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this.targetLine.material.color.copy( this.light.color );
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}
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this.targetLine.lookAt( v3 );
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this.targetLine.scale.z = v3.length();
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};
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}();
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export { DirectionalLightHelper };
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