Re: [osg-users] cessnafire.osg...
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 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 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] cessnafire.osg...
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 smime.p7s Description: S/MIME cryptographic signature ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
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 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] cessnafire.osg...
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 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 smime.p7s Description: S/MIME cryptographic signature ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
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 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 ___ 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] cessnafire.osg...
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 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 ___ 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 smime.p7s Description: S/MIME cryptographic signature ___ osg-users mailing list osg-users@lists.openscenegraph.org http
Re: [osg-users] cessnafire.osg...
Hi Shayne, 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... Anytime you want to find a node in the scene graph, you probably need to should make a node visitor. Looks like ParticleEffect is a subclass of osg::Group, so you'll have to override the accept(osg::Group group) method and try to dynamic_castosgParticle::ParticleEffect*(group) and then do what you want with it. Hope this helps, J-S -- __ Jean-Sebastien Guay[EMAIL PROTECTED] http://www.cm-labs.com/ http://whitestar02.webhop.org/ ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] cessnafire.osg...
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 smime.p7s Description: S/MIME cryptographic signature ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
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___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
