Re: [osg-users] Particles problem
Hi, I am 4 years late but maybe it will help someone else. I had a problem wich was similar to yours: i wanted to hide/show a node who had a particleSystemUpdater attached, and the accumulation problem came to me there. So that's what i did to get around: We should not hide/show the node (or ParticleSystemUpdater) attached to the ParticleSystem, but the Emitter. In my case, it was a ModularEmitter but it's the same. And then you have 2 solutions, both work: Code: //hide or show the modular emitter emitter-setNodeMask(0 or 1); Code: //set the counter of the emitter to 0. It's a little trick but it works. //if you do this, remember that you have to have to set back the real counter of the emitter when you want to show again your particles counter = new osgParticle::RandomRateCounter; counter-setRateRange( osgParticle::rangef(0,0) ); emitter-setCounter(counter); This solution might not be the best, but that's the only one i found for now. Cheers, Flavien -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=55149#55149 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Particles problem
HI Max, The particle system is set between several nodes, so which ones are you attempting to hide/unhide and how? Robert. On Mon, Nov 16, 2009 at 8:22 AM, Maxim Gammer maxgam...@gmail.com wrote: Hello all, I came across the following situation. Let us have an object with particles child and that object is hidden. When we unhide this object we get picture 2 and 3. Why particles don't dissapiar when the parent object is hidden? Why do they accumulate? And how to deal with it, how to fix? P.S. Picture 1 shows how it shoud be. -- Maxim Gammer ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Particles problem
Hi Robert, I've tried 3 different ways. 1 - Both particles and emitter are children of the hidden/unhidden object 2 - Particles is the child of object, and emitter is in the root. 3 - Emitter is a child of the object and particles is in the root. Hiding/unhiding is done by SetNodeMask. (FF or 00)... Max 2009/11/16 Robert Osfield robert.osfi...@gmail.com HI Max, The particle system is set between several nodes, so which ones are you attempting to hide/unhide and how? Robert. On Mon, Nov 16, 2009 at 8:22 AM, Maxim Gammer maxgam...@gmail.com wrote: Hello all, I came across the following situation. Let us have an object with particles child and that object is hidden. When we unhide this object we get picture 2 and 3. Why particles don't dissapiar when the parent object is hidden? Why do they accumulate? And how to deal with it, how to fix? P.S. Picture 1 shows how it shoud be. -- Maxim Gammer ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- Maxim Gammer ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Particles problem
What do you mean by switching off? And can it be done automatically when the object's parents get hidden? 2009/11/16 Robert Osfield robert.osfi...@gmail.com Hi Maxim, Have you tried switching off the ParticleSystem node? It's the ParticleSystem that does the rendering, the rest of the nodes just control how the particles are generated and moved. Robert. On Mon, Nov 16, 2009 at 10:52 AM, Maxim Gammer maxgam...@gmail.com wrote: Hi Robert, I've tried 3 different ways. 1 - Both particles and emitter are children of the hidden/unhidden object 2 - Particles is the child of object, and emitter is in the root. 3 - Emitter is a child of the object and particles is in the root. Hiding/unhiding is done by SetNodeMask. (FF or 00)... Max 2009/11/16 Robert Osfield robert.osfi...@gmail.com HI Max, The particle system is set between several nodes, so which ones are you attempting to hide/unhide and how? Robert. On Mon, Nov 16, 2009 at 8:22 AM, Maxim Gammer maxgam...@gmail.com wrote: Hello all, I came across the following situation. Let us have an object with particles child and that object is hidden. When we unhide this object we get picture 2 and 3. Why particles don't dissapiar when the parent object is hidden? Why do they accumulate? And how to deal with it, how to fix? P.S. Picture 1 shows how it shoud be. -- Maxim Gammer ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- Maxim Gammer ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- Maxim Gammer ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Particles problem
On Mon, Nov 16, 2009 at 11:09 AM, Maxim Gammer maxgam...@gmail.com wrote: What do you mean by switching off? And can it be done automatically when the object's parents get hidden? I would have though that would work, or just setting the NodeMask of the ParticleSystem. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Particles problem
Should we get back to that problem later? Could you tell me, where to look for a solution? Wht to begin with? Thanx for help. 2009/11/16 Robert Osfield robert.osfi...@gmail.com On Mon, Nov 16, 2009 at 11:09 AM, Maxim Gammer maxgam...@gmail.com wrote: What do you mean by switching off? And can it be done automatically when the object's parents get hidden? I would have though that would work, or just setting the NodeMask of the ParticleSystem. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- Maxim Gammer ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Particles problem
Hi Maxim, On Mon, Nov 16, 2009 at 12:05 PM, Maxim Gammer maxgam...@gmail.com wrote: Should we get back to that problem later? Could you tell me, where to look for a solution? Wht to begin with? I'm just guessing, I haven't actual tried what you after. I'm not the original author of osgParticle either so please just except my suggestions as to what should be possible, rather than anything definitive. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
