Reign.Core.Vector2.Angle C# (CSharp) Метод

        public float Angle()
        {
            var vec = this.Normalize();
            float val = vec.X;
            val = (val > 1) ? 1 : val;
            val = (val < -1) ? -1 : val;
            return (float)Math.Acos(val);
        }