Fausto, My project uses Qt widgets as well, so if this is the problem, I'd be interested in the solution so that I can proof read our code. Fortunately/unfortunately, it appears to work for me.
As to the nodes and drawables, all I can say is that there are nodes, and then, there are nodes. In any event, happy hunting... D.J. On Thu, Jan 21, 2010 at 1:14 PM, fausto <[email protected]> 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 <[email protected]> > 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 >> <[email protected]> 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 <[email protected]> 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 >> >> [email protected] >> >> >> >> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >> >> >> >> >> > _______________________________________________ >> > osg-users mailing list >> > [email protected] >> > >> > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >> > >> _______________________________________________ >> osg-users mailing list >> [email protected] >> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
