[osg-users] How to count polygons in view
Hello again, I tried your suggestions and got no where, we are to present our work at CERME6 (http://cerme6.univ-lyon1.fr/) due to Jan.,28th - Feb.,1 , 2009, we are working pretty intensive in developing our uniques math alograthim, again we are using OSG as our graphic engine. I really need more specific info about finding the number of polygon on screen on each frame. We are using this number with other data as an approximation of the distance of the camera (using the current heading, not the global distance. I mean my camera can point somewhere with the distance of 300, but the camera is really 2 meters from the surface behind )from the surface, well we have some really cool functions with crazy presentation. sorry to bother you, If you know of any OSG in Israel that will be coll. thank you ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] How to count polygons in view
Hi Oren, Is there a reason why you aren't following my recommendation of not to start are new thread when asking the same question? Threading of topics is essential for anyone trying to follow topics be it right now, or in the future when trying to find answers to their own questions. This includes people who might be trying to support you - how would they know what's already been suggested to you??? I consider your constant spamming of the list with separate topics a misuse of this community resource and If you continue this misuse it in this way I will simply unsubscribe you as it really isn't fair on the rest of the community trying to support someone who doesn't follow good mailing list etiquette. This is the third time I have asked you to change you conduct, and this is the last time I will ask, next time I will unsubscribe you. Robert. On Sun, Dec 7, 2008 at 2:50 PM, oren david [EMAIL PROTECTED] wrote: Hello again, I tried your suggestions and got no where, we are to present our work at CERME6 (http://cerme6.univ-lyon1.fr/) due to Jan.,28th - Feb.,1 , 2009, we are working pretty intensive in developing our uniques math alograthim, again we are using OSG as our graphic engine. I really need more specific info about finding the number of polygon on screen on each frame. We are using this number with other data as an approximation of the distance of the camera (using the current heading, not the global distance. I mean my camera can point somewhere with the distance of 300, but the camera is really 2 meters from the surface behind )from the surface, well we have some really cool functions with crazy presentation. sorry to bother you, If you know of any OSG in Israel that will be coll. thank you ___ 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] How to count polygons in view
Have you ever do a reply to It's a pretty basic mail facility. Just look at the subject line of ALL other threads, everyone else on the mailing is able to do it just fine. You seen to be special in your inability to use mail. On Sun, Dec 7, 2008 at 4:43 PM, oren david [EMAIL PROTECTED] wrote: Dear Robert, instead of throwing around accuses, maybe there is something wrong I'm doing. i'm not used to this old fashion mailing list. sorry for the mess I'd love to know where I'm wrong. Good order is essential to everyone on this mailing list, I'm with you on this one Oren David ___ 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] How to count polygons in view
Hello all,I'm a new around here. So far I've managed to get around but I'm stuck on a simple task. How many polygon do I have on screen right now. I saw the post http://groups.google.com/group/osg-users/browse_thread/thread/6e2894a28daa2f68/435314f8a1ffafc3?hl=enlnk=gstq=number+polygon#435314f8a1ffafc3 But I just can't make it work. I did some thing like that: osg::viewer viewer; . . . . . RenderStage *rs = new RenderStage; rs-setCamera(viewer.getCamera()); but nothing updates any 1??? thank YoU. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] How to count polygons in view
Hi, Maybe you can have a look on osg sources, on osgViewer and statistics... If you make a new viewer, press 's' and see the statistics... it can gives you an idea of what you can obtain. An other way can be to do it manually : with a nodecallback or a cullcallback, you can check if a node is in the frutum or not. After that, just count the visible node polygons... Vincent. 2008/12/3 oren david [EMAIL PROTECTED] Hello all,I'm a new around here. So far I've managed to get around but I'm stuck on a simple task. How many polygon do I have on screen right now. I saw the post http://groups.google.com/group/osg-users/browse_thread/thread/6e2894a28daa2f68/435314f8a1ffafc3?hl=enlnk=gstq=number+polygon#435314f8a1ffafc3 But I just can't make it work. I did some thing like that: osg::viewer viewer; . . . . . RenderStage *rs = new RenderStage; rs-setCamera(viewer.getCamera()); but nothing updates any 1??? thank YoU. ___ 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] How to count polygons in view
Well, I need the polygons counts not the node counts. maybe I can count drawables or something like that. According the post I mentioned OSG has something built-in for it ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] How to count polygons in view
Hi Oren, Could you *please* use the same threads that you've already started. Starting up new threads to ask practically the same question over and over is really bad use of the osg mailing list. This is the second time I've had to suggest this to you. Also could please read the replies to your others posts - answers to your questions have been supplied. You will need also need to show a little initiative, you have all source code to the OSG. Robert. On Wed, Dec 3, 2008 at 11:12 AM, oren david [EMAIL PROTECTED] wrote: Well, I need the polygons counts not the node counts. maybe I can count drawables or something like that. According the post I mentioned OSG has something built-in for it ___ 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] How to count polygons in view
Hello David, I will repeat what Robert already said, please use the Reply button in your mail client instead of starting a new message each time. This helps people keep track of what has been said before, and also allows you to keep the relevant parts of the previous message to give context to your replies, like this: Well, I need the polygons counts not the node counts. maybe I can count drawables or something like that. According the post I mentioned OSG has something built-in for it If you use a cull callback to know if a node was culled or not, you will know how many polygons are not culled, since if a Geode is not culled, then all its Drawables are not culled, and thus you can count the number of polygons in each Drawable. Also Vincent gave you an excellent suggestion, you can check out the code for the osgViewer::StatsHandler, it does exactly this and more. For an example, press 's' 4 times in osgviewer, and you will see what I mean. Move the camera around (to see part of the model or none of it in the view) and you will see the polygon counts change. 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
