import { Color } from "../math/Color.ts";
interface FogOptions {
    color?: Color | number | string;
    near?: number;
    far?: number;
    density?: number;
}
/**
 * EXP2 fog. Blends fragments toward `color` with factor `1 - exp(-(density * t)^2)` where
 * `t` is normalized depth (0 at `near`, 1 at `far`). Default density 2.5 gives ~99.8% fog
 * at `far` regardless of scene scale. LUT is rebuilt when `density` changes.
 */
export declare class Fog {
    #private;
    constructor({ color, near, far, density, }?: FogOptions);
    get color(): Color;
    get near(): number;
    set near(value: number);
    get far(): number;
    set far(value: number);
    get density(): number;
    set density(value: number);
    get lut(): Float32Array;
    clone(): Fog;
}
export {};
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