Hi, I work on a project for witch I need to remove/add nodes while OpenSceneGraph is rendering. I created a rendering window with OpenScenegraph and then I would like to be able to load/unload objects in it. I make the calls for OSG frame() function inside a draw function and I use a singleton to manage the creation of the viewer. That way I managed to have a single viewer and then load my OpenSceneGraph objects inside that same viewer. It seems fine but the problem is that I have to set camera and viewer parameters each time I call frame(). If I don't nothing is displayed, except OSG font colour. Ideally I would like to set the viewer parameters only when I load an OSG object for the first time.
Currently when I load an OSG object I use my singleton to find the viewer and to add the loaded node to the root associated to my viewer. instance()->find_or_create_viewer(); //creates a viewer if none have been created yet instance()->addChild(loadedNode); viewer_ = instance()->viewer(); // return a pointer to the unique osgViewer::Viewer In my draw function I have to do the following : viewer_->setUpViewerAsEmbeddedInWindow(viewParams[0],viewParams[1],viewParams[2] ,viewParams[3]); viewer_->getCamera()->setProjectionMatrix( osg::Matrix(glMat_projection) ); viewer_->getCamera()->setViewMatrix( osg::Matrix(glMat_modelview) ); viewer_->frame(); I have read that for dynamical rendering there was something to do about object's variance so I tried a few things but I didn't find how to solve my problem. Thank you! Cheers, Sophie ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=63377#63377 _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
