FairyGUI.Image.GenerateGrids C# (CSharp) Method

        void GenerateGrids(Rect gridRect, Rect uvRect)
        {
            float sx = uvRect.width / (float)_texture.width;
            float sy = uvRect.height / (float)_texture.height;
            gridTexX[0] = uvRect.xMin;
            gridTexX[1] = uvRect.xMin + gridRect.xMin * sx;
            gridTexX[2] = uvRect.xMin + gridRect.xMax * sx;
            gridTexX[3] = uvRect.xMax;
            gridTexY[0] = uvRect.yMax;
            gridTexY[1] = uvRect.yMax - gridRect.yMin * sy;
            gridTexY[2] = uvRect.yMax - gridRect.yMax * sy;
            gridTexY[3] = uvRect.yMin;

            if (_contentRect.width >= (_texture.width - gridRect.width))
            {
                gridX[1] = gridRect.xMin;
                gridX[2] = _contentRect.width - (_texture.width - gridRect.xMax);
                gridX[3] = _contentRect.width;
            }
            else
            {
                float tmp = gridRect.xMin / (_texture.width - gridRect.xMax);
                tmp = _contentRect.width * tmp / (1 + tmp);
                gridX[1] = tmp;
                gridX[2] = tmp;
                gridX[3] = _contentRect.width;
            }

            if (_contentRect.height >= (_texture.height - gridRect.height))
            {
                gridY[1] = gridRect.yMin;
                gridY[2] = _contentRect.height - (_texture.height - gridRect.yMax);
                gridY[3] = _contentRect.height;
            }
            else
            {
                float tmp = gridRect.yMin / (_texture.height - gridRect.yMax);
                tmp = _contentRect.height * tmp / (1 + tmp);
                gridY[1] = tmp;
                gridY[2] = tmp;
                gridY[3] = _contentRect.height;
            }
        }