HI Brian, You have to be very careful about adding or removing nodes during a traversal as you can invalidate iterators by causing a reorgnization of the structures the iterators are traversing. From you code segment it's unclear what is going on as you must have removed quite a bit of code.
As a general note it's generally best add/removing elements from the scene graph in the application's frame loop. Robert. On Wed, May 20, 2009 at 10:27 PM, Brian Stewart <[email protected]> wrote: > Hi, > > I am trying to implement a mechanism by which selected objects in my scene > are highlighted. Searching the forum I found a reference to the Outline > effect (an implementation of osgFX::Effect) on Ulrich Hertlein's web site > (http://www.sandbox.de/osg/), and I have attempted to integrate it into our > app - however, most of the time, whenever the object which is outlined first > comes into view, the app crashes in osg::NodeCallback::traverse, because the > _nestedCallback member is corrupted. This is on Windows Vista-64, running OSG > 2.6.1 built with Visual Studio 2008, in Debug mode. We are running OSG > multithreaded, and all my code setting up the effect is called from > osg::NodeCallback::operator() on the render thread. The general flow is as > follows: > > > Code: > > osg::NodeCallback::operator() > { > osg::PositionAttitudeTransform* modelTransform; // local transform to > position the model in the world > osg::Node* someChild; // some model > osg::ref_ptr<osgFX::Effect> fxNode = new osgFX::Outline(); > fxNode->addChild( someChild ); > modelTransform->addChild( fxNode.get() ); > } > > > > > Am I missing something obvious? If not, ideas or debugging strategies would > also be greatly appreciated! > > Thank you! > Brian > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=12628#12628 > > > > > > _______________________________________________ > 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
