Method nextGaussian

packages/procgen/src/random/SeededRandom.ts:110–115

* @zh 生成正态分布随机数 (Box-Muller 变换) * @en Generate normally distributed random number (Box-Muller transform) * * @param mean - @zh 均值 @en Mean * @param stdDev - @zh 标准差 @en Standard deviation

(mean: number = 0, stdDev: number = 1)

     * @param stdDev - @zh 标准差 @en Standard deviation
     */
    nextGaussian(mean: number = 0, stdDev: number = 1): number {
        const u1 = this.next();
        const u2 = this.next();
        const z0 = Math.sqrt(-2 * Math.log(u1)) * Math.cos(2 * Math.PI * u2);
        return z0 * stdDev + mean;
    }

    /**
     * @zh 生成指数分布随机数