import { Color } from './../math/Color';
import { FogBase } from './Fog';
/**
 * This class contains the parameters that define linear fog, i.e., that grows exponentially denser with the distance.
 */
export class FogExp2 implements FogBase {
    constructor(hex: number | string, density?: number);

    /**
     * @default ''
     */
    name: string;

    color: Color;

    /**
     * Defines how fast the fog will grow dense.
     * @default 0.00025
     */
    density: number;

    readonly isFogExp2: true;

    clone(): FogExp2;
    toJSON(): any;
}