Hi Alex, It sounds like osg::Scissor (wraps glScissor) would be what you need.
Robert. On Tue, Sep 2, 2008 at 11:25 AM, Alexander Löffler <[EMAIL PROTECTED]> wrote: > Hi all, > > I want to scale down a subgraph of my scene (everything below the Transform > that scales it) to a smaller size inside the view frustum. The tricky part > is that only those parts that are currently visible in the original > full-size scene should also be visible in the scaled-down version. This > means, the clipping that is applied at the clipping planes of the view > frustum should also be applied to the smaller version. The whole process > should be done multiple times on a different subgraph each, i.e. the result > would be my regular view containing several scaled-down scenes, each clipped > to its own clip planes. > > I looked at the osgclip example, which already looks quite promising, so the > ClipNode is probably what I want. (I didn't really understand why culling is > disabled in the example, though. Switching it on again didn't change > anything visibly.) > > Are there some kind of limitations to the ClipNode, imposed by the > underlying glClipPlane? Like a maximum number of clip planes in the entire > scene, or does the performance drop hugely for each additional clipping > defined like that? > > Thanks a lot for your help, > Alex. > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
