import { Interval } from '../Interval.js';
import type { Random } from '../random/index.js';
import { GradientNoise } from './GradientNoise.js';
export declare class SimplexNoise extends GradientNoise {
    static readonly RANGE: Interval;
    static readonly STANDARD_DEVIATION = 0.42544;
    private static readonly F2;
    private static readonly G2;
    constructor(random: Random, discardNoiseOffset?: boolean);
    range(): Interval;
    get2D(x: number, y: number): number;
    get3D(x: number, y: number, z: number): number;
    private getCornerNoise3D;
}
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