Function noiseHash

packages/particle/src/modules/NoiseModule.ts:11–15

(x: number, y: number)

 * Uses classic integer hash algorithm to generate pseudo-random values
 */
export function noiseHash(x: number, y: number): number {
    const n = x + y * 57;
    const shifted = (n << 13) ^ n;
    return ((shifted * (shifted * shifted * 15731 + 789221) + 1376312589) & 0x7fffffff) / 0x7fffffff;
}

/**
 * 2D 值噪声函数