Universe.Physics.ConvexDecompositionDotNet.Quaternion.ydir C# (CSharp) Méthode

        public float3 ydir()
        {
            return new float3(2 * (x * y - w * z), 1 - 2 * (x * x + z * z), 2 * (y * z + w * x));
        }

 public static float Yaw(Quaternion q)
 {
     float3 v = q.ydir();
     return (v.y == 0.0 && v.x == 0.0) ? 0.0f : (float)Math.Atan2(-v.x, v.y) * (180.0f / 3.14159264f);
 }