@phaserjs/phaser/math/mat4/Mat4Frustum.js

Phaser 4

import { Matrix4 } from "./Matrix4";
export function Mat4Frustum(left, right, bottom, top, near, far, out = new Matrix4()) {
  const rl = 1 / (right - left);
  const tb = 1 / (top - bottom);
  const nf = 1 / (near - far);
  return out.set(near * 2 * rl, 0, 0, 0, 0, near * 2 * tb, 0, 0, (right + left) * rl, (top + bottom) * tb, (far + near) * nf, -1, 0, 0, far * near * 2 * nf, 0);
}