@phaserjs/phaser/math/vec3/Vec3Random.js

Phaser 4

import { Vec3 } from "./Vec3";
export function Vec3Random(a, scale = 1, out = new Vec3()) {
  const r = Math.random() * 2 * Math.PI;
  const z = Math.random() * 2 - 1;
  const zScale = Math.sqrt(1 - z * z) * scale;
  return out.set(Math.cos(r) * zScale, Math.sin(r) * zScale, z * scale);
}