CannonGame.Ball.intersects C# (CSharp) 메소드

        bool intersects(Rectangle rect)
        {
            Vector2 circleDistance;
            circleDistance.X = Math.Abs(Position.X - rect.X - rect.Width / 2);
            circleDistance.Y = Math.Abs(Position.Y - rect.Y - rect.Height / 2);

            if (circleDistance.X > (rect.Width / 2 + radius)) { return false; }
            if (circleDistance.Y > (rect.Height / 2 + radius)) { return false; }

            if (circleDistance.X <= (rect.Width / 2)) { return true; }
            if (circleDistance.Y <= (rect.Height / 2)) { return true; }

            float cornerDistance_sq = (float)(Math.Pow((circleDistance.X - rect.Width / 2), 2) + Math.Pow((circleDistance.Y - rect.Height / 2), 2));

            return (cornerDistance_sq <= (Math.Pow(radius, 2)));
        }