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
> >
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> ------------------
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Code:
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=48177#48177
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