[osg-users] OSG + QT and QTabWidget: Disappearing scene graph

2010-12-02 Thread Angus Lau
uggestions. Thank you! Cheers, Angus Lau -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=34464#34464 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listin

Re: [osg-users] How should I organize the scene graph to handle 2 million points and lines?

2009-11-03 Thread Angus Lau
Hi, Thank you for both of your help. It seems that PagedLOD is what I need to use to reduce CPU memory usage. I have tried to use PagedLOD briefly before, but I am not clear how I can make PagedLOD unload the unused child nodes once those child nodes are loaded. It seems that my PagedLOD nodes

Re: [osg-users] How should I organize the scene graph to handle 2 million points and lines?

2009-11-02 Thread Angus Lau
Hi, Thank you for your suggestions! I think the scribe effect is probably what I want for selection. You mentioned something about unreferencing data on the CPU side once it is uploaded. I am quite interested in this. Could you please give me more details? Honestly speaking, the 2 million poin

Re: [osg-users] How should I organize the scene graph to handle 2 million points and lines?

2009-10-29 Thread Angus Lau
Hi, Thank you for your help. I would like to show as many lines and points as possible at one time. Since some lines and points are clustered together, I am thinking about using LOD, PagedLOD, Impostor, or something similar to make culling and drawing take less time, but my viewer is actually a

[osg-users] How should I organize the scene graph to handle 2 million points and lines?

2009-10-29 Thread Angus Lau
Hi, I am trying to build a viewer that can display millions of points and lines. How should I organize or structure the scene graph to maximize the performance and minimize the memory usage? Thank you! Cheers, Angus -- Read this topic online here: http://forum.openscenegraph.o