Nick. Ok, thank you so much. I will look up more information about what Robert said.
Trajce Nikolov NICK wrote: > Hi, > > > well, for this I think what Robert suggested suits better. I don't know the > details of the Polytope that much but I think you just need to re-create the > View frustum as a Polytope and do the intersectons... I hope Robert will shed > more light into this > > > > > On Mon, Jun 27, 2016 at 10:20 AM, John Lee < ()> wrote: > > > Hi, robert. > > Thank you for your reply. > > I never use the PolytopeIntersector, can you tell me more hints? Because i > > am new to osg or show me some website so that i learn osg quickly. > > Thanks. > > > > Jhon. > > > > > > robertosfield wrote: > > > > > Hi John, > > > > > > > > > As Nick suggest you can use a cull callback to report back when a node > > > and it's subgraph are likely to be within the view frustum, however, > > > this is constrains you to doing the test in the cull traversal. > > > > > > However, if you want to do the test outside the cull traversal then > > > you'll need to use the PolytopeIntersector, creating a Polytope as the > > > frustum. > > > > > > Robert. > > > > > > On 27 June 2016 at 07:30, John Lee <> wrote: > > > > > > > > > > Hi, > > > > > > > > I don't know how to judge if an object is in the frustum? I want to get > > > > which node is in the frustum. > > > > > > > > Thank you! > > > > > > > > Cheers, > > > > John > > > > > > > > ------------------ > > > > Read this topic online here: > > > > http://forum.openscenegraph.org/viewtopic.php?p=67832#67832 > > > > (http://forum.openscenegraph.org/viewtopic.php?p=67832#67832) > > > > > > > > > > > > > > > > > > > > > > > > _______________________________________________ > > > > osg-users mailing list > > > > > > > > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > > > > > > > (http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org) > > > > > > > > > > > _______________________________________________ > > > osg-users mailing list > > > > > > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > > (http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org) > > > > > > ------------------ > > > Post generated by Mail2Forum > > > > > > > > > ------------------ > > Read this topic online here: > > http://forum.openscenegraph.org/viewtopic.php?p=67841#67841 > > (http://forum.openscenegraph.org/viewtopic.php?p=67841#67841) > > > > > > > > > > > > _______________________________________________ > > osg-users mailing list > > () > > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > (http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org) > > > > > > > > > > -- > trajce nikolov nick > > ------------------ > Post generated by Mail2Forum ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=67844#67844 _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
