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/var/www/uibuilder.cmshelp.dk/httpdocs/node_modules/three/src/helpers/PointLightHelper.js

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import { Mesh } from '../objects/Mesh.js';
import { MeshBasicMaterial } from '../materials/MeshBasicMaterial.js';
import { SphereGeometry } from '../geometries/SphereGeometry.js';

/**
 * This displays a helper object consisting of a spherical mesh for
 * visualizing an instance of {@link PointLight}.
 *
 * ```js
 * const pointLight = new THREE.PointLight( 0xff0000, 1, 100 );
 * pointLight.position.set( 10, 10, 10 );
 * scene.add( pointLight );
 *
 * const sphereSize = 1;
 * const pointLightHelper = new THREE.PointLightHelper( pointLight, sphereSize );
 * scene.add( pointLightHelper );
 * ```
 *
 * @augments Mesh
 */
class PointLightHelper extends Mesh {

/**
	 * Constructs a new point light helper.
	 *
	 * @param {PointLight} light - The light to be visualized.
	 * @param {number} [sphereSize=1] - The size of the sphere helper.
	 * @param {number|Color|string} [color] - The helper's color. If not set, the helper will take
	 * the color of the light.
	 */
	constructor( light, sphereSize, color ) {

const geometry = new SphereGeometry( sphereSize, 4, 2 );
		const material = new MeshBasicMaterial( { wireframe: true, fog: false, toneMapped: false } );

super( geometry, material );

/**
		 * The light being visualized.
		 *
		 * @type {HemisphereLight}
		 */
		this.light = light;

/**
		 * The color parameter passed in the constructor.
		 * If not set, the helper will take the color of the light.
		 *
		 * @type {number|Color|string}
		 */
		this.color = color;

this.type = 'PointLightHelper';

this.matrix = this.light.matrixWorld;
		this.matrixAutoUpdate = false;

this.update();

/*
	// TODO: delete this comment?
	const distanceGeometry = new THREE.IcosahedronGeometry( 1, 2 );
	const distanceMaterial = new THREE.MeshBasicMaterial( { color: hexColor, fog: false, wireframe: true, opacity: 0.1, transparent: true } );

this.lightSphere = new THREE.Mesh( bulbGeometry, bulbMaterial );
	this.lightDistance = new THREE.Mesh( distanceGeometry, distanceMaterial );

const d = light.distance;

if ( d === 0.0 ) {

this.lightDistance.visible = false;

} else {

this.lightDistance.scale.set( d, d, d );

}

this.add( this.lightDistance );
	*/

}

/**
	 * Frees the GPU-related resources allocated by this instance. Call this
	 * method whenever this instance is no longer used in your app.
	 */
	dispose() {

this.geometry.dispose();
		this.material.dispose();

}

/**
	 * Updates the helper to match the position of the
	 * light being visualized.
	 */
	update() {

this.light.updateWorldMatrix( true, false );

if ( this.color !== undefined ) {

this.material.color.set( this.color );

} else {

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

}

/*
		const d = this.light.distance;

if ( d === 0.0 ) {

this.lightDistance.visible = false;

} else {

this.lightDistance.visible = true;
			this.lightDistance.scale.set( d, d, d );

}
		*/

}

export { PointLightHelper };

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