private void Image_SizeChanged(object sender, SizeChangedEventArgs e)
        {
            if (null == m_Scene)
            {
                return;
            }

            int iWidth  = (int)image.ActualWidth;
            int iHeight = (int)image.ActualHeight;

            if (iWidth == 0 || iHeight == 0)
            {
                return;
            }
            m_Scene.Resize(iWidth, iHeight);
        }