RenderingLibrary.Graphics.NineSlice.OldRefreshSourceRectangles C# (CSharp) Method

        private void OldRefreshSourceRectangles()
        {
            bool useMulti = mSprites[(int)NineSliceSections.TopLeft].Texture != mSprites[(int)NineSliceSections.Top].Texture;

            if (useMulti)
            {
                if (mSprites[(int)NineSliceSections.TopLeft].Texture == null)
                {
                    mSprites[(int)NineSliceSections.TopLeft].SourceRectangle = null;
                    mSprites[(int)NineSliceSections.Top].SourceRectangle = null;
                    mSprites[(int)NineSliceSections.TopRight].SourceRectangle = null;

                    mSprites[(int)NineSliceSections.Left].SourceRectangle = null;
                    mSprites[(int)NineSliceSections.Center].SourceRectangle = null;
                    mSprites[(int)NineSliceSections.Right].SourceRectangle = null;

                    mSprites[(int)NineSliceSections.BottomLeft].SourceRectangle = null;
                    mSprites[(int)NineSliceSections.Bottom].SourceRectangle = null;
                    mSprites[(int)NineSliceSections.BottomRight].SourceRectangle = null;
                }
                else
                {
                    mFullOutsideWidth = mSprites[(int)NineSliceSections.TopLeft].Texture.Width;
                    mFullInsideWidth = mSprites[(int)NineSliceSections.TopLeft].Texture.Width - (mFullOutsideWidth * 2);

                    mSprites[(int)NineSliceSections.TopLeft].SourceRectangle = new Rectangle(0, 0, mSprites[(int)NineSliceSections.TopLeft].Texture.Width, mSprites[(int)NineSliceSections.TopLeft].Texture.Height);
                    mSprites[(int)NineSliceSections.Top].SourceRectangle = new Rectangle(0, 0, mSprites[(int)NineSliceSections.Top].Texture.Width, mSprites[(int)NineSliceSections.Top].Texture.Height);
                    mSprites[(int)NineSliceSections.TopRight].SourceRectangle = new Rectangle(0, 0, mSprites[(int)NineSliceSections.TopRight].Texture.Width, mSprites[(int)NineSliceSections.TopRight].Texture.Height);

                    mSprites[(int)NineSliceSections.Left].SourceRectangle = new Rectangle(0, 0, mSprites[(int)NineSliceSections.Left].Texture.Width, mSprites[(int)NineSliceSections.Left].Texture.Height);
                    mSprites[(int)NineSliceSections.Center].SourceRectangle = new Rectangle(0, 0, mSprites[(int)NineSliceSections.Center].Texture.Width, mSprites[(int)NineSliceSections.Center].Texture.Height);
                    mSprites[(int)NineSliceSections.Right].SourceRectangle = new Rectangle(0, 0, mSprites[(int)NineSliceSections.Right].Texture.Width, mSprites[(int)NineSliceSections.Right].Texture.Height);

                    mSprites[(int)NineSliceSections.BottomLeft].SourceRectangle = new Rectangle(0, 0, mSprites[(int)NineSliceSections.BottomLeft].Texture.Width, mSprites[(int)NineSliceSections.BottomLeft].Texture.Height);
                    mSprites[(int)NineSliceSections.Bottom].SourceRectangle = new Rectangle(0, 0, mSprites[(int)NineSliceSections.Bottom].Texture.Width, mSprites[(int)NineSliceSections.Bottom].Texture.Height);
                    mSprites[(int)NineSliceSections.BottomRight].SourceRectangle = new Rectangle(0, 0, mSprites[(int)NineSliceSections.BottomRight].Texture.Width, mSprites[(int)NineSliceSections.BottomRight].Texture.Height);
                }
            }
            else if(mSprites[(int)NineSliceSections.TopLeft].Texture != null)
            {
                var texture = mSprites[(int)NineSliceSections.TopLeft].Texture;

                int leftCoordinate = 0;
                int rightCoordinate = texture.Width;
                int topCoordinate = 0;
                int bottomCoordinate = texture.Height;

                if(SourceRectangle.HasValue)
                {
                    leftCoordinate = SourceRectangle.Value.Left;
                    rightCoordinate = SourceRectangle.Value.Right;
                    topCoordinate = SourceRectangle.Value.Top;
                    bottomCoordinate = SourceRectangle.Value.Bottom;
                }

                int usedWidth = rightCoordinate - leftCoordinate;
                int usedHeight = bottomCoordinate - topCoordinate;

                mFullOutsideWidth = (usedWidth + 1) / 3;
                mFullInsideWidth = usedWidth - (mFullOutsideWidth * 2);

                mFullOutsideHeight = (usedHeight + 1) / 3;
                mFullInsideHeight = usedHeight - (mFullOutsideHeight * 2);

                int outsideWidth = System.Math.Min(mFullOutsideWidth, RenderingLibrary.Math.MathFunctions.RoundToInt(Width / 2)); ;
                int outsideHeight = System.Math.Min(mFullOutsideHeight, RenderingLibrary.Math.MathFunctions.RoundToInt(Height / 2));
                int insideWidth = mFullInsideWidth;
                int insideHeight = mFullInsideHeight;

                mSprites[(int)NineSliceSections.TopLeft].SourceRectangle = new Rectangle(
                    leftCoordinate + 0,
                    topCoordinate + 0,
                    outsideWidth,
                    outsideHeight);
                mSprites[(int)NineSliceSections.Top].SourceRectangle = new Rectangle(
                    leftCoordinate + outsideWidth,
                    topCoordinate + 0,
                    insideWidth,
                    outsideHeight);
                mSprites[(int)NineSliceSections.TopRight].SourceRectangle = new Rectangle(
                    leftCoordinate + insideWidth + outsideWidth,
                    topCoordinate + 0,
                    outsideWidth,
                    outsideHeight);

                mSprites[(int)NineSliceSections.Left].SourceRectangle = new Rectangle(
                    leftCoordinate + 0,
                    topCoordinate + outsideHeight,
                    outsideWidth,
                    insideHeight);
                mSprites[(int)NineSliceSections.Center].SourceRectangle = new Rectangle(
                    leftCoordinate + outsideWidth,
                    topCoordinate + outsideHeight,
                    insideWidth,
                    insideHeight);
                mSprites[(int)NineSliceSections.Right].SourceRectangle = new Rectangle(
                    leftCoordinate + outsideWidth + insideWidth,
                    topCoordinate + outsideHeight,
                    outsideWidth,
                    insideHeight);

                mSprites[(int)NineSliceSections.BottomLeft].SourceRectangle = new Rectangle(
                    leftCoordinate + 0,
                    topCoordinate + outsideHeight + insideHeight,
                    outsideWidth,
                    outsideHeight);
                mSprites[(int)NineSliceSections.Bottom].SourceRectangle = new Rectangle(
                    leftCoordinate + outsideWidth,
                    topCoordinate + outsideHeight + insideHeight,
                    insideWidth,
                    outsideHeight);
                mSprites[(int)NineSliceSections.BottomRight].SourceRectangle = new Rectangle(
                    leftCoordinate + outsideWidth + insideWidth,
                    topCoordinate + outsideHeight + insideHeight,
                    outsideWidth,
                    outsideHeight);
            }

            if(mSprites[(int)NineSliceSections.Top].SourceRectangle.HasValue)
            {
                mSprites[(int)NineSliceSections.Top].Height = mSprites[(int)NineSliceSections.Top].SourceRectangle.Value.Height;
                mSprites[(int)NineSliceSections.TopLeft].Height = mSprites[(int)NineSliceSections.Top].Height;
                mSprites[(int)NineSliceSections.TopRight].Height = mSprites[(int)NineSliceSections.Top].Height;

            }
            if (mSprites[(int)NineSliceSections.Bottom].SourceRectangle.HasValue)
            {
                mSprites[(int)NineSliceSections.Bottom].Height = mSprites[(int)NineSliceSections.Bottom].SourceRectangle.Value.Height;
                mSprites[(int)NineSliceSections.BottomRight].Height = mSprites[(int)NineSliceSections.Bottom].Height;
                mSprites[(int)NineSliceSections.BottomLeft].Height = mSprites[(int)NineSliceSections.Bottom].Height;
            }

            if (mSprites[(int)NineSliceSections.Left].SourceRectangle.HasValue)
            {
                mSprites[(int)NineSliceSections.Left].Width = mSprites[(int)NineSliceSections.Left].SourceRectangle.Value.Width;
                mSprites[(int)NineSliceSections.TopLeft].Width = mSprites[(int)NineSliceSections.Left].Width;
                mSprites[(int)NineSliceSections.BottomLeft].Width = mSprites[(int)NineSliceSections.Left].Width;
            }

            if(mSprites[(int)NineSliceSections.Right].SourceRectangle.HasValue)
            {
                mSprites[(int)NineSliceSections.Right].Width = mSprites[(int)NineSliceSections.Right].SourceRectangle.Value.Width;
                mSprites[(int)NineSliceSections.TopRight].Width = mSprites[(int)NineSliceSections.Right].Width;
                mSprites[(int)NineSliceSections.BottomRight].Width = mSprites[(int)NineSliceSections.Right].Width;
            }
        }