export declare class FractalNoise {
    private readonly _smoothValueNoise;
    constructor();
    noise2d(x: number, y: number, octaves?: number, persistence?: number, lacunarity?: number): number;
    noise3d(x: number, y: number, z: number, octaves?: number, persistence?: number, lacunarity?: number): number;
    noise4d(x: number, y: number, z: number, w: number, octaves?: number, persistence?: number, lacunarity?: number): number;
    seed(seed: number): void;
}