Thanks for your input, I'll take a look to these posts. Each time we try to use osgParticle we have new problems, I think we'll going to look for another solution, we only need simple particles effects. Anyone has good reading about GPU based particle engines to share ?
On Mon, Aug 16, 2010 at 9:24 PM, Jolley, Thomas P < [email protected]> wrote: > Hi Serge, > > You may want to research the following posts and see if they are relevent > to your particle problems. > > * > http://lists.openscenegraph.org/pipermail/osg-users-openscenegraph.org/2009-April/027011.html > * > > http://lists.openscenegraph.org/pipermail/osg-users-openscenegraph.org/2009-May/028435.html > > The above talks about a floating point precision bug that was introduced > due to a change in 2008. The bug hasn't been resolved yet. I suspect it > will wait until the osgParticle is refactored since not many see the > problem. If the above describes your problem you will need to undo the 2008 > change. > > > http://lists.openscenegraph.org/pipermail/osg-users-openscenegraph.org/2009-October/033416.html > > > > > ------------------------------ > *From:* [email protected] [mailto: > [email protected]] *On Behalf Of *Serge Lages > *Sent:* Monday, August 16, 2010 10:32 AM > *To:* OpenSceneGraph Users > *Subject:* [osg-users] osg::Particle problem > > Hi all, > > I am currently having some troubles with particles, I am trying to make > them local to a model (for example, imagine a scene with the earth rotating > around the sun, and a model moving on the earth, I don't want my particles > to take into account the earth movement, only the model one). I've made it > by putting everything related to particles (Emitter, ParticleSystemUpdater, > the geode with the ParticleSystem...) under my model root instead of the > whole scene root. But it doesn't work, my particles are still taking into > account the main movement. It's weird because the same code was working one > year ago, but I didn't use it again until today, and I don't find any other > way to make my particles local. > > My particle effect is composed of : > - a ParticleSystem inside a classic Geode > - a ModularEmitter > - a ParticleSystemUpdater > - a FluidProgram > > Everything is attached into my graph under my model, and I set : > emitter->setReferenceFrame(osgParticle::ParticleProcessor::RELATIVE_RF); > > particleSystem->setParticleScaleReferenceFrame(osgParticle::ParticleSystem::LOCAL_COORDINATES); > > It works without problem when nothing is moving in my scene, but if I > enable movements on the model parents, my particles take them into account > on their own movement. > > Any idea ? > > Cheers, > > -- > Serge Lages > http://www.tharsis-software.com > > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > -- Serge Lages http://www.tharsis-software.com
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