System.out.println(new Quaternion(4, new Vector3f(0,3,0)).rotationMatrix());
System.out.println();
Vector4f a4 = new Vector4f(43, 1, 5, 6);
Vector4f b4 = new Vector4f(4, 2, 67, 2);
System.out.println(MVP_manual.multiply(a4).normalize());
System.out.println(MVP_manual.multiply(a4.normalize()).normalize());