Re: [osg-users] SwitchNode Animation with a specific time interval
Thanks Ulrich. I didn't know about this earlier. Looks like this is what I might need. I will post my findings on this soon. ... Thank you! Cheers, Vijay -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=40226#40226 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] SwitchNode Animation with a specific time interval
Hi,
I have a bunch of timesteps of data that I need to animate between. I set up my
code so that each timestep corresponds to a switch node and I attempted to
animate between each switchnode.
Here is my switch node animation operator code:
Code:
void SwitchingCallback::operator() (osg::Node* node, osg::NodeVisitor* nv)
{
static int tstepNum = 0;
static int sign = -1;
int numtimesteps = 64;
osg::Switch* switchNode = static_castosg::Switch*(node);
if( !((++_count) % 30) switchNode)
{
if(tstepNum = numtimesteps-1)
{
tstepNum = numtimesteps-1;
sign = -sign;
}
else if (tstepNum = 0)
{
tstepNum = 0;
sign = -sign;
}
tstepNum += sign;
switchNode-setSingleChildOn(tstepNum);
}
traverse(node, nv);
}
Currently, the speed at which the switch node is animating between timesteps is
machine dependent. In other words, the animation speed is dependent on the
machine that could count to 30 quick enough.
I would ideally like the animation to happen at a specific time interval
instead and hoping to avoid the
Code:
!((++_count) % 30)
and be able to specify something like
Code:
if(timeElapsed 0.02 seconds)
then do_something;
I looked at osganimationmakepath example and attempted to use the following:
Code:
static int tstepNum = 0;
static int sign = -1;
int numtimesteps = 64;
static int flagForFirstTime = 0;
osg::Switch* switchNode = static_castosg::Switch*(node);
_currentTime = osg::Timer::instance()-tick();
if(flagForFirstTime == 0)
{
_startTime = osg::Timer::instance()-tick();
flagForFirstTime = 1;
}
float t = osg::Timer::instance()-delta_s(_startTime, _currentTime);
if( t 0.02f switchNode)
{
blah_blah_as_above;
tstepNum += sign;
switchNode-setSingleChildOn(tstepNum);
flagForFirstTime = 0;
}
traverse(node, nv);
This worked, except that the animation was inconsistent. It was slow at times
and then it suddenly picked up speed.
I am sure I am missing something, but I do not know what. Any suggestions?
Thank you!
Cheers,
Vijay.
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http://forum.openscenegraph.org/viewtopic.php?p=40186#40186
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Re: [osg-users] osgmovie and stereo
Hi, Thanks Robert. I also saw a 'osgmovie' sample along with other examples built on OSG 2.9.10. When I hit a 'osgmovie --help', I found an option '--stereo'. Will this be any simpler than using 'osgstereoimage' ? Thank you! Cheers, Vijay -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=35745#35745 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] osgmovie and stereo
Hi, I have two live video streams that are set apart for left and right eye. Does anyone know if osgmovie can play them in active/passive stereo? If not, what is the best way to play two video streams in stereo? Thank you! Cheers, Vijay -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=35543#35543 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] OSG Build error on Mac OS X
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[osg-users] How to build osgdem
Hi, I did successfully build OSG2.8, but neither the 'bin' directory or the 'share/OpenSceneGraph/bin' directory has the executable 'osgdem'. I have been looking at various posts that talk about using osgdem to load .dem files, but I don't seem to find it. I do have 'gdal' installed and built OSG with gdal support as well. Can anyone tell me what might I be missing? Another sub question - Can osgdem load dted files (dt0, dt1, etc) ? Thank you, Vijay. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=8874#8874 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
