private void backgroundImageToolStripMenuItem_Click(object sender, EventArgs e)
{
OpenFileDialog dlg = new OpenFileDialog();
dlg.Filter = "Image files (*.png;*.jpg)|*.png;*.jpg";
if (dlg.ShowDialog() != DialogResult.OK)
{
return;
}
var texture = ImageTexture2D.Create(dlg.FileName);
var background = new ImageBackground(texture);
mRenderView.GetViewer().SetBackground(background);
}