Azmyth.XNA.TerrainManager.ScreenToTile C# (CSharp) Method

        public System.Drawing.RectangleF ScreenToTile(Rectangle screenRect)
        {
            return new System.Drawing.RectangleF(
                m_offsetX * -1,
                m_offsetY * -1,
                (float)screenRect.Width / (float)m_tileSize,
                (float)screenRect.Height / (float)m_tileSize);
        }