Hi, see here: http://article.gmane.org/gmane.comp.graphics.openscenegraph.user/24544
Also, the gmane interface is the best way to search the archives. http://news.gmane.org/gmane.comp.graphics.openscenegraph.user rgds jp Tueller, Shayne R Civ USAF AFMC 519 SMXS/MXDEC wrote: > Robert, > > I understand that you have to move the particle system out in the world > space and make it local to the moving model, but how do you get at the > particle system inside the file in the first place? That, to me, is the big > question. If I read between the lines in your response, I get the impression > that it can't be done and that I must define my own particle system > explicitly. > > If it is possible to isolate the particle system out of the cessnafire.osg > file, I would like to see a code snippet that does this... > > -Shayne > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Robert > Osfield > Sent: Monday, July 07, 2008 11:49 AM > To: OpenSceneGraph Users > Subject: Re: [osg-users] cessnafire.osg... > > Hi Shayne, > > You'll can't put a self contained particle system with file and then > load it and transform it around the world and expect it to > automagicaly work as you want. What you have to do to move the > particle system out in the world space, and have the emiter local to > the moving object. > > Robert. > > 2008/7/7 Tueller, Shayne R Civ USAF AFMC 519 SMXS/MXDEC > <[EMAIL PROTECTED]>: >> Robert, >> >> I've attempted to look at the archives but have been unsuccessful in > finding >> anything that will help. Perhaps I'm searching for the wrong thing. >> >> I've seen examples of transforming particles explicitly but I haven't > found >> anything that gives an example on how to transform particles that are >> implicitly defined in an osg file like the cessnafire.osg example. I read >> this file into a node and then what? How do I get at the particle part to >> transform it? >> >> I did look at the osgparticleeffect.cpp file and it's still unclear on how > I >> would transform particles that are implicitly defined in the > cessnafire.osg >> file. The osg files in the osgparticleeffect code that are read in appear > to >> be geometry and image only so this really doesn't help in answering my >> question. >> >> -Shayne >> >> >> >> -----Original Message----- >> From: [EMAIL PROTECTED] >> [mailto:[EMAIL PROTECTED] On Behalf Of Robert >> Osfield >> Sent: Monday, July 07, 2008 10:04 AM >> To: OpenSceneGraph Users >> Subject: Re: [osg-users] cessnafire.osg... >> >> Hi Shayne, >> >> Have a look through the archives on this topic, much of the >> discussions goes way back. >> >> Also have a look at the osgparticleeffects code block, it has a code >> path that handles moving models and particles systems. >> >> Robert. >> >> 2008/7/7 Tueller, Shayne R Civ USAF AFMC 519 SMXS/MXDEC >> <[EMAIL PROTECTED]>: >>> Thanks for the link. While I appreciate the info, it doesn't really >> address >>> my original question about transforming the particle emitter that is >> defined >>> in the cessnafire.osg file. After reading the cessnafire.osg file into a >>> node, I add this node to a MatrixTransform but only the geometry is >>> affected. The fire/smoke part is NOT affected by the transform > whatsoever. >>> Anyone else caring to chime in on this? Perhaps it can't be done... >>> >>> -Shayne >>> >>> -----Original Message----- >>> From: [EMAIL PROTECTED] >>> [mailto:[EMAIL PROTECTED] On Behalf Of ??? >>> Sent: Thursday, July 03, 2008 8:09 PM >>> To: OpenSceneGraph Users >>> Subject: Re: [osg-users] cessnafire.osg... >>> >>> >I'm assuming that the fire/smoke is modeled using osgParticle… >>> >>> I think so! You can take a look >>> http://faculty.nps.edu/jasullivan/osgtutorials/osgParticle.htm >>> >>> >>> >>> >>> 在2008-07-04 07:10:57，"Tueller, Shayne R Civ USAF AFMC 519 SMXS/MXDEC" >>> <[EMAIL PROTECTED]> 写道： >>> >>> >>> I have a simple/silly question regarding cessnafire.osg. >>> >>> >>> >>> I can load this into a node and display it without trouble, >> however, >>> when I apply a MatrixTransform to the node, the geometry is changed but >> the >>> fire/smoke animation doesn't follow the geometry. I'm assuming that the >>> fire/smoke is modeled using osgParticle… >>> >>> >>> >>> My question is, is what do I need to do to have fire/smoke undergo >>> the same transformation as the geometry so that it moves with the >> airplane? >>> Do I need to use the Texture matrix? >>> >>> >>> >>> Any help here would be welcome… >>> >>> >>> >>> Thanks, >>> >>> -Shayne >>> >>> >>> >>> ________________________________ >>> >>> 网易首款免费3D网游"天下2"，6月6日激情公测 <http://tx2.163.com/fab.html> >>> >>> _______________________________________________ >>> 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 > > > ------------------------------------------------------------------------ > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- This message is subject to the CSIR's copyright terms and conditions, e-mail legal notice, and implemented Open Document Format (ODF) standard. 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