void osgParticle::ParticleSystemUpdater::traverse(osg::NodeVisitor& nv)
{
osgUtil::CullVisitor* cv = nv.asCullVisitor();
if (cv)
{
if (nv.getFrameStamp())
{
if( _frameNumber < nv.getFrameStamp()->getFrameNumber())
{
_frameNumber = nv.getFrameStamp()->getFrameNumber();
double t = nv.getFrameStamp()->getSimulationTime();
if (_t0 != -1.0)
{
ParticleSystem_Vector::iterator i;
for (i=_psv.begin(); i!=_psv.end(); ++i)
{
ParticleSystem* ps = i->get();
ParticleSystem::ScopedWriteLock lock(*(ps->getReadWriteMutex()));
// We need to allow at least 2 frames difference, because the particle system's lastFrameNumber
// is updated in the draw thread which may not have completed yet.
if (!ps->isFrozen() &&
(!ps->getFreezeOnCull() || ((nv.getFrameStamp()->getFrameNumber()-ps->getLastFrameNumber()) <= 2)) )
{
ps->update(t - _t0, nv);
}
}
}
_t0 = t;
}
}
else
{
OSG_WARN << "osgParticle::ParticleSystemUpdater::traverse(NodeVisitor&) requires a valid FrameStamp to function, particles not updated.\n";
}
}
Node::traverse(nv);
}
void osgParticle::ParticleSystemUpdater::traverse(osg::NodeVisitor& nv)
{
osgUtil::CullVisitor *cv = dynamic_cast<osgUtil::CullVisitor *>(&nv);
if (cv)
{
if (nv.getFrameStamp())
{
if( _frameNumber < nv.getFrameStamp()->getFrameNumber())
{
_frameNumber = nv.getFrameStamp()->getFrameNumber();
double t = nv.getFrameStamp()->getSimulationTime();
if (_t0 != -1.0)
{
ParticleSystem_Vector::iterator i;
for (i=_psv.begin(); i!=_psv.end(); ++i)
{
ParticleSystem* ps = i->get();
ParticleSystem::ScopedWriteLock lock(*(ps->getReadWriteMutex()));
if (!ps->isFrozen() && (ps->getLastFrameNumber() >= (nv.getFrameStamp()->getFrameNumber() - 1) || !ps->getFreezeOnCull()))
{
ps->update(t - _t0);
}
}
}
_t0 = t;
}
}
else
{
osg::notify(osg::WARN) << "osgParticle::ParticleSystemUpdater::traverse(NodeVisitor&) requires a valid FrameStamp to function, particles not updated.\n";
}
}
Node::traverse(nv);
}
