66 lines
2.1 KiB
C++
66 lines
2.1 KiB
C++
#include <osgParticle/ParticleSystemUpdater>
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#include <osg/CopyOp>
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#include <osg/Node>
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using namespace osg;
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osgParticle::ParticleSystemUpdater::ParticleSystemUpdater()
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: osg::Node(), _t0(-1), _frameNumber(0)
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{
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setCullingActive(false);
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}
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osgParticle::ParticleSystemUpdater::ParticleSystemUpdater(const ParticleSystemUpdater& copy, const osg::CopyOp& copyop)
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: osg::Node(copy, copyop), _t0(copy._t0)
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{
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ParticleSystem_Vector::const_iterator i;
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for (i=copy._psv.begin(); i!=copy._psv.end(); ++i) {
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_psv.push_back(static_cast<ParticleSystem* >(copyop(i->get())));
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}
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}
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void osgParticle::ParticleSystemUpdater::traverse(osg::NodeVisitor& nv)
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{
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osgUtil::CullVisitor *cv = dynamic_cast<osgUtil::CullVisitor *>(&nv);
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if (cv) {
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if (nv.getFrameStamp())
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{
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//added 1/17/06- bgandere@nps.edu
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//ensures ParticleSystem will only be updated once per frame
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//regardless of the number of cameras viewing it
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if( _frameNumber < nv.getFrameStamp()->getFrameNumber())
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{
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double t = nv.getFrameStamp()->getReferenceTime();
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if (_t0 != -1)
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{
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ParticleSystem_Vector::iterator i;
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for (i=_psv.begin(); i!=_psv.end(); ++i)
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{
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if (!i->get()->isFrozen() && (i->get()->getLastFrameNumber() >= (nv.getFrameStamp()->getFrameNumber() - 1) || !i->get()->getFreezeOnCull()))
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{
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i->get()->update(t - _t0);
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}
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}
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}
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_t0 = t;
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}
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//added- 1/17/06- bgandere@nps.edu
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//set frame number to the current frame number
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_frameNumber = nv.getFrameStamp()->getFrameNumber();
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}
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else
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{
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osg::notify(osg::WARN) << "osgParticle::ParticleSystemUpdater::traverse(NodeVisitor&) requires a valid FrameStamp to function, particles not updated.\n";
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}
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}
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Node::traverse(nv);
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}
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osg::BoundingSphere osgParticle::ParticleSystemUpdater::computeBound() const
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{
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return osg::BoundingSphere();
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}
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