On 10/31/07, Terry Welsh <[EMAIL PROTECTED]> wrote: > > If you didn't multiply this translation into the projection matrix, then all > > cameras would render the same eye space, and you'd get the same image from > > all cameras. > > > > If you tried to do this by modifying the modelview matrix instead of the > > projection matrix, the images wouldn't tile seamlessly. > > How does this cause tiling problems? I have still never found a good > reason to put translations or rotations in the projection matrix since > this tends to cause problems with fog and lighting.
A powerwall is an example where the view matrix stays constant between cameras but the slave cameras use a post translation of the projection matrix to capture different parts of the display. The osgwindow example does this in minature. The result is jus sheared projection matrix. A cylindrical display you'd rotate the view matrix for each of the slaves but keep the projection matrix the same. _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
