Hi Jim, I suggest making your aperture using a .png with an alpha channel. Then see the alpha_texture.py demo to show how to display this. Finally, if you want to move the aperture, you'll have to adjust the position parameter of your aperture-containing texture. Something like mouseTarget.py should get you on the right track. Cheers! Andrew Jim Magnuson wrote: > I'm brand new to vision egg, and getting stymied about how to do the > following task. > > What I want to do is display an image or text in a viewport, but then > hide all but a small aperture (e.g., an oval with gaussian edges), > and then move the aperture around. > > If anyone has advice or example code to share, I'd be grateful. > > Thanks, > > jim > > ====================================== > The Vision Egg mailing list > Archives: //www.freelists.org/archives/visionegg > Website: http://www.visionegg.org/mailinglist.html ====================================== The Vision Egg mailing list Archives: //www.freelists.org/archives/visionegg Website: http://www.visionegg.org/mailinglist.html