AssemblyCSharp.VectorEx.GetPitch C# (CSharp) Method

        public static float GetPitch(this Vector3 v)
        {
            float len = Mathf.Sqrt((v.x * v.x) + (v.z * v.z));    // Length on xz plane.
            return (- Mathf.Atan2(v.y, len));
        }