Hi Maia, The FrameStamo::getReferenceTime() is the reference time for the current frame, it's updated during the viewer.advance() and isn't updated till the next advance(). advance() is called as the first part of the viewer.frame().
Robert. On 11 June 2012 19:12, Maia Randria <[email protected]> wrote: > Hi, > > I'd like to know what would be the difference between: > viewer.getViewerFrameStamp()->getReferenceTime(); > > and > osg::Timer::instance()->delta_m(startTick,endTick) > > in the following codes: > > > Code: > > int main( int argc, char** argv ) > { > /* Add models to the scene */ > osg::ref_ptr<osg::Node> model = osgDB::readNodeFile( "cessna.osg" ); > > if(model == NULL) > { > osg::notify( osg::FATAL ) << "Unable to load data file. > Exiting." << std::endl; > return 1; > } > > /* create the scene graph */ > osg::ref_ptr<osg::Group> root = new osg::Group; > root->addChild( model.get() ); > > /* view the scene */ > osgViewer::Viewer viewer; > > /* set scene data */ > viewer.setSceneData( root.get() ); > > // take start time > osg::Timer_t startTick = osg::Timer::instance()->tick(); > > // Run the viewer > viewer.run(); > > > // take the end of time after viewing > osg::Timer_t endTick = osg::Timer::instance()->tick(); > > // time elapsed since osgviewer started running and the model is > displayed on the screen > double t = viewer.getFrameStamp()->getReferenceTime(); > > //display elapsed times > cout << " With osg::Timer_t, completed in > "<<osg::Timer::instance()->delta_m(startTick,endTick)<< " milliseconds" > <<endl; > cout << " With viewer.getFrameStamp()->getReferenceTime = " << t*1000 > << " milliseconds" << endl; > > } > > > > > I got very different values, e.g.: > > With osg::Timer_t = 2036.44 ms > With viewer.getFrameStamp() = 1887.5 ms > > Thank you very much, > > Maia > > > robertosfield wrote: >> Hi Utkarsh, >> >> viewer.getViewerFrameStamp()->getReferenceTime(); >> >> Robert. >> >> On 2 May 2012 17:27, Utkarsh Patankar <> wrote: >> >> > Hi, >> > >> > In an OSG application, is there any way to find out how much time has >> > elapsed since osgviewer started running? I don't want to use any external >> > time based functions. >> > >> > Thank you! >> > >> > Cheers, >> > Utkarsh >> > >> > ------------------ >> > Read this topic online here: >> > http://forum.openscenegraph.org/viewtopic.php?p=47508#47508 >> > >> > >> > >> > >> > >> > _______________________________________________ >> > osg-users mailing list >> > >> > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >> > >> _______________________________________________ >> osg-users mailing list >> >> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >> >> ------------------ >> Post generated by Mail2Forum > > Code: > > > > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=48177#48177 > > > > > > _______________________________________________ > 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
