Thanks a lot, with your tip it works !
Alistair Baxter wrote: > -----Original Message----- > > > From: [mailto:] On Behalf Of Lucas SART > > Sent: 07 September 2012 11:08 > > To: > > Subject: Re: 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 > > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > ------------------ > Post generated by Mail2Forum ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=49923#49923 _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
