PixelFarm.Agg.RectInt.ClipRect C# (CSharp) Method

        public static bool ClipRect(RectInt pBoundingRect, ref RectInt pDestRect)
        {
            // clip off the top so we don't write into random memory
            if (pDestRect.Top < pBoundingRect.Top)
            {
                pDestRect.Top = pBoundingRect.Top;
                if (pDestRect.Top >= pDestRect.Bottom)
                {
                    return false;
                }
            }
            // clip off the bottom
            if (pDestRect.Bottom > pBoundingRect.Bottom)
            {
                pDestRect.Bottom = pBoundingRect.Bottom;
                if (pDestRect.Bottom <= pDestRect.Top)
                {
                    return false;
                }
            }

            // clip off the left
            if (pDestRect.Left < pBoundingRect.Left)
            {
                pDestRect.Left = pBoundingRect.Left;
                if (pDestRect.Left >= pDestRect.Right)
                {
                    return false;
                }
            }

            // clip off the right
            if (pDestRect.Right > pBoundingRect.Right)
            {
                pDestRect.Right = pBoundingRect.Right;
                if (pDestRect.Right <= pDestRect.Left)
                {
                    return false;
                }
            }

            return true;
        }