Hi Judson, Great detective work. The change to the frame() was done to avoid issues with events being given times that aren't in sequence - previously we'd get time delta's that could be negative.
Do you have an idea of how to reproduce the problem now? Once I can reproduce it I'll be able to work out the best west to resolve the problem. Robert. On 22 May 2013 22:50, Judson Weissert <[email protected]> wrote: > Robert, > > I found the revision that caused the regression. Ironically, it occurred way > before the 3.1.6 release... > > See r13092 associated with > http://svn.openscenegraph.org/osg/OpenSceneGraph/trunk/src/osgViewer/Viewer.cpp > > The 3.1.2 behavior returned when I reverted that revision. A notable > behavior change that I noticed is that before I reverted r13092, the > OSG_INFO<<"Reset event time from ..." line in EventQueue::takeEvents() would > trigger extremely often (e.g., while hovering over the viewer window). It > does not trigger at all after I reverted r13092. > > See also the cutOffTime variable in Viewer::eventTraversal() which explains > the link to ON_DEMAND frame scheduling. > > Do you happen to know the original intention of r13092? The log message is > "Moved the frame() event into the event traversal after then events and > their state have been accumulated." > > Thanks for the help, > > Judson > > > > On 5/22/2013 3:02 PM, Judson Weissert wrote: >> >> Robert, >> >> I have made some progress. The problem appears to be caused by an >> eventTimeDelta of zero which is calculated within >> StandardManipulator::performMovement(). It eventually results in a divide by >> zero and the propagation of non-finite value(s) through the remainder of the >> call chain. Specifically, dy in OrbitManipulator::zoomModel() and >> OrbitManipulator::panModel() ends up being a non-finite value. >> >> Thus, I have found an explanation for the symptoms, but I have not tracked >> down the underlying cause of eventTimeDelta being calculated as zero. >> Therefore, I have not been able to create a small example case yet. >> >> Regards, >> >> Judson >> >> On 5/22/2013 2:37 PM, Robert Osfield wrote: >>> >>> Hi Judson, >>> >>> It's a curious set of circumstances but as yet I can't think of a >>> specific cause. >>> >>> Is there any chance you can create a small example that illustrates >>> the problem so that I can try it out and see if I can spot the >>> problems. >>> >>> Cheers, >>> Robert. >>> >> >> _______________________________________________ >> 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
