Thanks, that really works. one more question, what causes this? Is that because of the projection matrix is set to zero when it's resized to zero width, and even after it's resized again to some non-zero width. The zero matrix will keep being zero no matter what multiplies to it.
-----oringinal email----- 发件人: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] 代表 Garrett Potts 发送时间: Thursday, March 29, 2007 9:53 PM 收件人: osg users 主题: Re: 答复: [osg-users] help about QGLWidget Hello: I keep a min widht and height for the scen graph in the GlWidget I have. So when overriding the virtual method resizeGl(int width, int height) I have something like: if(width < minWidth) width = minWidth; if(height < minHeight) height = minHeight; // now set the viewport as normal // return; On Mar 29, 2007, at 9:53 AM, xiaoshuxing wrote: > I'm using the simplerviewerQT4 of the OSG examples. > What should I back up? > What's the possible variables that may cause this scenario? Please > give me > some clue so that I know what variable to watch in the debugging mode. > Thanks. > > -----邮件原件----- > 发件人: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] 代表 Robert Osfield > 发送时间: Thursday, March 29, 2007 9:38 PM > 收件人: osg users > 主题: Re: [osg-users] help about QGLWidget > > Hi, > > I wonder if the viewport is being scaled to 0 width and no moving back > up, or perhaps the projection matrix is ending up at zero. > > You haven't specified how you've integrated with the OSG so I don't > what to recommend. > > Robert. > > On 3/29/07, xiaoshuxing <[EMAIL PROTECTED]> wrote: >> >> >> >> >> I'm writing a test program with OSG in QT4 based windowing system. >> >> >> >> Here's what I did: >> >> I loaded a scene, it showed well. >> >> I resized the QGLWidget using a QSplitter, it acts well. >> >> But after I drag the splitter to the very left to resize the >> QGLWidget to zero width, and then I drag it back, the scene >> disappears, I >> tracked down in debugging mode, the scene is still in the widget, >> but why > it >> didn't show? >> >> >> >> Could anyone please give me some clue, it's driving me crazy. >> _______________________________________________ >> osg-users mailing list >> [email protected] >> http://openscenegraph.net/mailman/listinfo/osg-users >> http://www.openscenegraph.org/ >> > _______________________________________________ > osg-users mailing list > [email protected] > http://openscenegraph.net/mailman/listinfo/osg-users > http://www.openscenegraph.org/ > > _______________________________________________ > osg-users mailing list > [email protected] > http://openscenegraph.net/mailman/listinfo/osg-users > http://www.openscenegraph.org/ _______________________________________________ osg-users mailing list [email protected] http://openscenegraph.net/mailman/listinfo/osg-users http://www.openscenegraph.org/ _______________________________________________ osg-users mailing list [email protected] http://openscenegraph.net/mailman/listinfo/osg-users http://www.openscenegraph.org/
