Hi all! We are having this issue as well in our simulation software, since we are also rotating our smoke particles to add a nice motion the smoke. Any idea when it will be fixed? Or does someone know of a workaround?
Kind regards, Michael *** Zsa Zsa Gabor - "A man in love is incomplete until he has married. Then he's finished." 2008/12/5 Michael Bach Jensen <[EMAIL PROTECTED]>: > Hi Thom, > > Thanks for the detective work. The change you've suggested as causing > the regression is r7961. > > http://www.openscenegraph.org/projects/osg/changeset/7961 > > It's six months since I code this so it's a bit cold a topic so off > the top of my head I can't point to anything in a particular as being > the cause of the problems. I will have to sit down and step through > the code. > > Thanks for pointing out that SmokeBox.osg reproduces the problem, with > the problem in front of me it's very difficult to spot issues in code. > > Robert. > > > On Tue, Nov 11, 2008 at 11:21 PM, Jolley, Thomas P > <[EMAIL PROTECTED]> wrote: >> Hi Robert, >> >> I've looked into this a little further. It appears the changes you made to >> ParticleSystem.cpp on March 17th is the reason for the behavior change. I >> don't have a solution yet other than backing out the changes. I'm still >> trying to understand what you're doing in the single_pass_render function >> before coming up with a solution. >> >> I think this problem was mentioned in an earlier thread around May. >> See >> http://lists.openscenegraph.org/pipermail/osg-users-openscenegraph.org/2008-May/011595.html. >> >> To see the problem look at SmokeBox.osg with osgviewer (I'm using osg >> 2.6.0). The particles are rotating about the wrong axis (or at least a >> different axis). >> >> ---- >> Tom Jolley >> >> >> ________________________________ >> From: Jolley, Thomas P >> Sent: Thursday, August 21, 2008 2:11 PM >> To: OpenSceneGraph Users >> Subject: Re: [osg-users] Particle system setInitialRotationalSpeedRange() >> >> Hi Erik, >> >> I noticed the same thing about a week ago while upgrading an application >> from osg 1.0 to 2.4. It was on my list of things to look into. >> >> ________________________________ >> From: Erik Johnson [EMAIL PROTECTED] >> Sent: Thursday, August 21, 2008 10:30 AM >> To: [email protected] >> Subject: Re: [osg-users] Particle system setInitialRotationalSpeedRange() >> >> There is certainly a change in behavior, although I can't pinpoint the >> change in code yet. >> >> Setting the rotational speed with (0, 0, 1): >> OSG 2.2.0 - particles rotate like fans (pinwheels) >> OSG 2.4.0 - particles rotate like a margarita blender (cork-screw) >> OSG 2.6.0 - particles rotate like a margarita blender (cork-screw) >> >> I guess I'm just wondering if this is the expected behavior? And I'm >> surprised nobody has a problem with this. >> >> Thanks, >> Erik >> >> >>> Date: Thu, 21 Aug 2008 09:26:52 +0100 >>> From: "Robert Osfield" <[EMAIL PROTECTED]> >>> Subject: Re: [osg-users] Particle system >>> setInitialRotationalSpeedRange() >>> To: "OpenSceneGraph Users" <[email protected]> >>> Message-ID: >>> <[EMAIL PROTECTED]> >>> Content-Type: text/plain; charset=ISO-8859-1 >>> >>> Hi Erik, >>> >>> osgParticle has hardly been touched between OSG-2.2 and 2.6. Use svn >>> log to check which files have changed. >>> >>> Robert. >>> >>> On Thu, Aug 21, 2008 at 1:07 AM, Erik Johnson <[EMAIL PROTECTED]> >>> wrote: >>> > Hi all, >>> > >>> > It seems to me, back in the OSG 2.2.x time frame, that I could set the >>> > initial rotational velocity of the RadialShooter and have the particles >>> > "pinwheel" around their center point, while maintaining their billboard >>> > orientation and face the Camera. Perhaps it was a rotation on the "Y" >>> > axis. >>> > >>> > Nowadays with OSG 2.4/2.6, setting the rotational speed will cause the >>> > particles to rotate relative to the world axis and not in the >>> > camera-relative axis. >>> > >>> > Is this a bug? A feature? Is it still posible to "pinwheel" a particle >>> > around? Does anyone use setInitialRotationalSpeedRange()? >>> > >>> > This was a cool effect which added a nice dimension to smoke plumes and >>> > such. >>> > >>> > Thanks for any info! >>> > -Erik Johnson >>> > >>> > >>> > _______________________________________________ >>> > osg-users mailing list >>> > [email protected] >>> > >>> > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >>> > >>> > >>> >> >> >> _______________________________________________ >> osg-users mailing list >> [email protected] >> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >> >> > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
