Hi JP, it's impossible to show exactly my code, but what I basically do with the geode is:
1. Remove all drawables: geode->removeDrawables((unsigned int)0, geode->getNumDrawables()); 2. Create new ones: osg::ref_ptr< osg::Geometry > geom; geom = createGeom(parameters); .. 3. Add them to the geode: if( geom.valid() ) geode->addDrawable( geom.get() ); I'm not sure the problem is there, because as I mentioned the new scene is properly shown if I load it with osgViewer.exe. I think the problem is more with some missing settings, either to the drawables/nodes, or to the viewer (the original one, which doesn't get updated). I tried to set the drawables data variance to DYNAMIC, and other things but nothing worked. However, as Robert said, it seems this should work without any additional action. The strange thing is, why the old drawables are properly deleted from the original viewer, but the new ones are not added? I would have preferred that the viewer didn't do anything, than just 1 part of the job. Thank you all for your prompt replies, I really appreciate it. Fausto On Fri, Jan 22, 2010 at 7:55 AM, J.P. Delport <jpdelp...@csir.co.za> wrote: > Hi, > > can you give more detail on what you are adding/removing? Do you use the > same vertex lists, but with new drawables. Do you change vertices, but keep > the drawables? To get more help you'd probably need to make a very small > example that shows the problem... > > jp > > fausto wrote: > >> Thank you both for your inputs. >> >> To Robert: >> >>> Try writing the subgraph they are in out to a file then load this file >>> into osgviewer to see if can view them. >>> >> >> Yes, as I mentioned the new scene data is OK, I can see it while debugging >> and after saving->loading it with osgViewer.exe all new drawables appear in >> the scene, and previous ones are removed. So, the scene is OK, the problem >> is really with the original viewer. It renders OK, but doesn't update >> properly when drawables are added. >> >> I'm rendering in Qt widgets, could that be the problem? >> >> To D.J. >> >> >>> I might recommend refactoring the code to >>> add/remove nodes instead of drawables. >>> >> >> Unfortunately, I need nodes to be the same. >> >> I keep searching and testing. Thanks again for your help. >> Cheers. >> Fausto >> >> >> On Thu, Jan 21, 2010 at 6:42 PM, D.J. Caldwell >> <dlcaldwel...@gmail.com<mailto: >> dlcaldwel...@gmail.com>> wrote: >> >> Hi Fausto and Robert, >> >> If the simple modification is due to some specific user event (button >> press, file dialog, etc.), I might recommend refactoring the code to >> add/remove nodes instead of drawables. It sounds like you have no >> trouble initially getting the geometry into the scene; it is the >> simple modification that is the problem. >> >> What I am suggesting here is a work-around, and not a fix (on my >> system, it appears that there is no "bug" to fix). Other than this, I >> believe the issue may be familiarity with the available patterns; that >> is, using the right tool for the right job. No insult intended, but >> the only fix for that is research, time, and patience. >> >> The project I am part of uses visitors and/or swapping out vertices >> for time based changes, and adding/removing nodes for user based >> inputs. >> >> Fausto, as Robert said, you are the only one who can know what is >> appropriate for your project. >> >> Just some things to consider; I hope this helps... >> >> D.J. >> >> On Thu, Jan 21, 2010 at 12:12 PM, Robert Osfield >> <robert.osfi...@gmail.com <mailto:robert.osfi...@gmail.com>> wrote: >> > Hi Fausto, >> > >> > Dynamically modifying the scene graph shouldn't be that hard. >> > Removing drawables and adding news ones should perfect safe and >> > shouldn't require and extra steps from you, no need to dirty >> bounding >> > volumes or display lists, it should all just work. >> > >> > As to why your new drawables aren't appearing I can't say. Try >> > writing the subgraph they are in out to a file then load this file >> > into osgviewer to see if can view them. It could be simply that >> there >> > is something wrong with the geometry data you've set up. Only >> you has >> > your app and your data so you're the only one that can investigate. >> > >> > Robert. >> > >> > On Thu, Jan 21, 2010 at 4:41 PM, fausto <f4us...@gmail.com >> <mailto:f4us...@gmail.com>> wrote: >> >> Hi All, >> >> I'm struggling to have a simple modification of an osg scene >> working. >> >> I simply need to remove all drawables from a geode and add new >> drawables to >> >> the same geode. >> >> >> >> In the viewer, the geode just disappears after removing the >> drawables, but I >> >> can see that the scene contains the geode with the new >> drawables. So, it >> >> seems a rendering problem. >> >> >> >> I see that many people have similar problems with dynamic >> modifications. >> >> I've read plenty of posts about setting display list to false, >> using >> >> callbacks, dirtyBound(), etc.... >> >> >> >> But I hope there is a clearer and easier way to achieve this. >> >> >> >> Please let me know. >> >> >> >> Thanks for any help. >> >> Fausto >> >> >> >> _______________________________________________ >> >> osg-users mailing list >> >> osg-users@lists.openscenegraph.org >> <mailto:osg-users@lists.openscenegraph.org> >> >> >> >> >> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >> >> >> >> >> > _______________________________________________ >> > osg-users mailing list >> > osg-users@lists.openscenegraph.org >> <mailto:osg-users@lists.openscenegraph.org> >> >> > >> >> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >> > >> _______________________________________________ >> osg-users mailing list >> osg-users@lists.openscenegraph.org >> <mailto: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 >> > > -- > This message is subject to the CSIR's copyright terms and conditions, > e-mail legal notice, and implemented Open Document Format (ODF) standard. > The full disclaimer details can be found at > http://www.csir.co.za/disclaimer.html. > > This message has been scanned for viruses and dangerous content by > MailScanner, and is believed to be clean. 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