Re: [osg-users] Monitoring time elapsed
Hi Robert, Sorry for bothering you with this but I think I don't really understand how to use viewer.advance() with viewer.getFrameStamp()-getReferenceTime(). Could you give an example, please ? In fact, what I would want to do is to compute and record the elapsed time between the time a scene is rendered on the screen ( i.e., the time at which the user is viewing the scene) and an event (e.g. the user is clicking on an object on the viewport). Thank you, Maia -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=48239#48239 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Monitoring time elapsed
Hi Maia, On 12 June 2012 15:50, Maia Randria veneree.randrianari...@crulrg.ulaval.ca wrote: Sorry for bothering you with this but I think I don't really understand how to use viewer.advance() with viewer.getFrameStamp()-getReferenceTime(). Could you give an example, please ? Go have a look at the source code in the examples and the OSG code base, use a search on FrameStamp. In fact, what I would want to do is to compute and record the elapsed time between the time a scene is rendered on the screen ( i.e., the time at which the user is viewing the scene) and an event (e.g. the user is clicking on an object on the viewport). The events have a time stamp, as does the event visitors and viewer. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Monitoring time elapsed
OK, I will do so, thank you very much. Maia robertosfield wrote: Hi Maia, On 12 June 2012 15:50, Maia Randria wrote: Sorry for bothering you with this but I think I don't really understand how to use viewer.advance() with viewer.getFrameStamp()-getReferenceTime(). Could you give an example, please ? Go have a look at the source code in the examples and the OSG code base, use a search on FrameStamp. In fact, what I would want to do is to compute and record the elapsed time between the time a scene is rendered on the screen ( i.e., the time at which the user is viewing the scene) and an event (e.g. the user is clicking on an object on the viewport). The events have a time stamp, as does the event visitors and viewer. Robert. ___ 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=48248#48248 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Monitoring time elapsed
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_ptrosg::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_ptrosg::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
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Re: [osg-users] Monitoring time elapsed
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
veneree.randrianari...@crulrg.ulaval.ca 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_ptrosg::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_ptrosg::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
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Re: [osg-users] Monitoring time elapsed
OK, thank you very much.
Maia
robertosfield wrote:
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
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_ptrosg::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_ptrosg::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
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[osg-users] Monitoring time elapsed
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 osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Monitoring time elapsed
Hi Utkarsh, viewer.getViewerFrameStamp()-getReferenceTime(); Robert. On 2 May 2012 17:27, Utkarsh Patankar osgfo...@tevs.eu 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 osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
