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 <357059...@qq.com> 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 > > > > > > > > > > > > > > > > > > _______________________________________________ > > > osg-users mailing list > > > > > > > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > > > > _______________________________________________ > > osg-users mailing list > > > > > 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 > > > > > > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > -- trajce nikolov nick
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