Hi, I'm working on a zoom/magnifying lens feature, that I am implementing using RTT. I'm setting up a slave camera to the main view and rendering to a texture, which I place on a quad on the HUD. I've got a few questions:
1. Whats the best way to move the slave camera to magnify different areas? Moving the slave RTT Camera viewport? Setting a matrix offset for the slave with respect to the main camera? Something else? 2. If I want to show multiple zoom levels of magnification at the same time (on adjacent quads on the HUD), do I need to render to texture multiple times, or can I somehow index the higher zoom quads into the texture so that a smaller chunk of the texture gets put on the same-size quad (effectively blowing it up?) 3. When my HUD resizes (due to a window resize), the size/aspect ratio of the quads gets thrown off. How could I handle that to keep it the same? (use a MatrixTransform to scale the quad to the right aspect ratio? Resize the quad?) Cheers, Nick ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=59219#59219 _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
