SGDE.Physics.Collision.CollisionUnit.CircleBoxCollision C# (CSharp) Метод

        private bool CircleBoxCollision(Vector2 circleCenter, int circleRadius, Vector2 boxUpperLeft, Vector2 boxLowerRight)
        {
            float dX;
            float dY;
            float dist;

            if (circleCenter.X > boxLowerRight.X)
            {
                if (circleCenter.Y > boxLowerRight.Y)
                {
                    dX = circleCenter.X - boxLowerRight.X;
                    dY = circleCenter.Y - boxLowerRight.Y;
                    dist = (dX * dX) + (dY * dY);

                    return dist <= circleRadius * circleRadius;
                }
                else if (circleCenter.Y < boxUpperLeft.Y)
                {
                    dX = circleCenter.X - boxLowerRight.X;
                    dY = circleCenter.Y - boxUpperLeft.Y;
                    dist = (dX * dX) + (dY * dY);

                    return dist <= circleRadius * circleRadius;
                }
                else
                {
                    return circleCenter.X <= boxLowerRight.X + circleRadius;
                }
            }
            else if (circleCenter.X < boxUpperLeft.X)
            {
                if (circleCenter.Y > boxLowerRight.Y)
                {
                    dX = circleCenter.X - boxUpperLeft.X;
                    dY = circleCenter.Y - boxLowerRight.Y;
                    dist = (dX * dX) + (dY * dY);

                    return dist <= circleRadius * circleRadius;
                }
                else if (circleCenter.Y < boxUpperLeft.Y)
                {
                    dX = circleCenter.X - boxUpperLeft.X;
                    dY = circleCenter.Y - boxUpperLeft.Y;
                    dist = (dX * dX) + (dY * dY);

                    return dist <= circleRadius * circleRadius;
                }
                else
                {
                    return circleCenter.X >= boxUpperLeft.X - circleRadius;
                }
            }
            else if (circleCenter.Y > boxLowerRight.Y)
            {
                return circleCenter.Y <= boxLowerRight.Y + circleRadius;
            }
            else if (circleCenter.Y < boxUpperLeft.Y)
            {
                return circleCenter.Y >= boxUpperLeft.Y - circleRadius;
            }
            else
            {
                // in box
                return true;
            }
        }