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
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