Hi Nick, There isn't a feature directly built into osg::PageLOD or DatabasePager for this.
What you could do is look at the creating a custom DatabasePager that overrides the following method: /** Merge the changes to the scene graph by calling calling removeExpiredSubgraphs then addLoadedDataToSceneGraph. * Note, must only be called from single thread update phase. */ virtual void updateSceneGraph(const osg::FrameStamp& frameStamp); Within this you could add your own tracking of when things are merge or removed. Robert. On 3 June 2016 at 17:15, Trajce Nikolov NICK <trajce.nikolov.n...@gmail.com> wrote: > Hi Community, > > I was looking for a way to detect when PagedLOD gets its children paged > in/out. So I installed an update callback and based on a difference in the > children number I was able to know when such change occurred. And this was > working with a code an year ago. > > Now it doesn't .. Any clue or hint how to detect such changes? > > Thanks a bunch as always! > > Cheers, > Nick > > -- > trajce nikolov nick > > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org