private static double GetAngle(Point point, Point laser)
        {
            var r = Math.Atan2( -point.Y + laser.Y, -point.X + laser.X)*(180/Math.PI);
            if (r < 0)
            {
                r = 360 + r;
            }

            r -= 90;
            if (r < 0)
            {
                r += 360;
            }
            return r;
        }