Daniel Moos wrote: > Hi everybody > > I have a complex model. From this model i calculate the silhouette edges. > This > calculation need some seconds. > If i calculate this the view isn't updated. > > How can i create a thread for this calculation? Or how can I show a message > on > a osgText::Text before calculating the edges? > > Hello,
About the text update, it is more about thread synchronization than OSG. The basic to update a text in OSG is to keep a pointer (better, a smart pointer) to the osgText::Text object. Update is performed calling setText(std::string ) on this object. This update cannot happen in the worker thread since it may happen while the viewer is culling or drawing. I suggest to add a text update check during the update phase of the viewer (main loop), if text's std::string has been updated, modify osgText::Text object otherwise, skip. Mutex is needed to protect the std::string and status flag (better a flag than a string comparison) shared by both threads. Antoine _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
