public System.Drawing.RectangleF TileToScreenF(System.Drawing.RectangleF tileRect)
{
return new System.Drawing.RectangleF(
((tileRect.X + m_offsetX) * m_tileSize),
((tileRect.Y + m_offsetY) * m_tileSize),
(tileRect.Width * m_tileSize),
(tileRect.Height * m_tileSize));
}