-----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Lucas SART > Sent: 07 September 2012 11:08 > To: [email protected] > Subject: Re: [osg-users] OSG + QT and QTabWidget: Disappearing scene graph > >Hi, > > I had looking for why it doesn't work. It seems that the first tab camera > projection > matrix and view matrix are not valid (components = -1.#IND000000000000) and I > don't know why. I tryed to look into OSG code but I don't found what is > wrong... > If someone have an idea it would be great !
Oddly, I think I just encountered this problem yesterday. If the QT widget ever gets resized to zero (as can happen sometimes during setup and intermediate layout stages), and osgQt::GLWidget::resizeEvent is called with width and height equal to zero, the camera projection matrix gets screwed up due to divide-by-zeroes, and never recovers because resizing always takes into account the existing camera matrix. I solved the problem by preventing osgQt::GLWidget::resizeEvent being called by my GLWidget subclass if either dimension was zero. But I suppose it would probably be better if a fix was made inside the osgQt library. _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
