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import { Color } from '../math/Color.js';

/**
 * This class can be used to define an exponential squared fog,
 * which gives a clear view near the camera and a faster than exponentially
 * densening fog farther from the camera.
 *
 * ```js
 * const scene = new THREE.Scene();
 * scene.fog = new THREE.FogExp2( 0xcccccc, 0.002 );
 * ```
 */
class FogExp2 {

/**
	 * Constructs a new fog.
	 *
	 * @param {number|Color} color - The fog's color.
	 * @param {number} [density=0.00025] - Defines how fast the fog will grow dense.
	 */
	constructor( color, density = 0.00025 ) {

/**
		 * This flag can be used for type testing.
		 *
		 * @type {boolean}
		 * @readonly
		 * @default true
		 */
		this.isFogExp2 = true;

/**
		 * The name of the fog.
		 *
		 * @type {string}
		 */
		this.name = '';

/**
		 * The fog's color.
		 *
		 * @type {Color}
		 */
		this.color = new Color( color );

/**
		 *  Defines how fast the fog will grow dense.
		 *
		 * @type {number}
		 * @default 0.00025
		 */
		this.density = density;

}

/**
	 * Returns a new fog with copied values from this instance.
	 *
	 * @return {FogExp2} A clone of this instance.
	 */
	clone() {

return new FogExp2( this.color, this.density );

}

/**
	 * Serializes the fog into JSON.
	 *
	 * @param {?(Object|string)} meta - An optional value holding meta information about the serialization.
	 * @return {Object} A JSON object representing the serialized fog
	 */
	toJSON( /* meta */ ) {

return {
			type: 'FogExp2',
			name: this.name,
			color: this.color.getHex(),
			density: this.density
		};

}

export { FogExp2 };

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Name	Size	Perms	Modified	Actions
Fog.js	1.90 KB	lrw-r--r--	2025-03-28 11:04:38	Edit Download recursive recursive
FogExp2.js	1.57 KB	lrw-r--r--	2025-03-28 11:04:38	Edit Download recursive recursive
Scene.js	4.04 KB	lrw-r--r--	2025-03-28 11:04:39	Edit Download recursive recursive

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