Ok...very clear....now I know the reason!!!! Thanks so much for all your replies!!
----- Original Message ----- From: "Andreas Goebel" <[EMAIL PROTECTED]> To: "osg users" <osg-users@openscenegraph.net> Sent: Tuesday, June 12, 2007 8:20 PM Subject: Re: [osg-users] Pick > Robert Nitti schrieb: >> It's a silly little thing not even worth posting. I build a flat list >> of drawables and geodes while looping through the list of hits. If the >> address of a geode or drawable is the same as any previously inserted in >> the list, I reject it. >> >> I'm CERTAIN there is a more elegant way of doing this... but I didn't >> look much further than my nose, so... >> > Hi, > > you could either use a std::set instead of a list, or use the std - > algorithm "unique" which deletes doublettes from a list. > > The std::set is unsuitable in case you want to preserve the order of the > hits (i.e. want to know which object comes first). > > Regards, > > Andreas >> >> -----Original Message----- >> From: [EMAIL PROTECTED] >> [mailto:[EMAIL PROTECTED] On Behalf Of Jeremy L. >> Moles >> Sent: Tuesday, June 12, 2007 1:33 PM >> To: osg users >> Subject: RE: [osg-users] Pick >> >> On Tue, 2007-06-12 at 11:56 -0400, Robert Nitti wrote: >> >>> Hi -- >>> >>> 'Picking' creates an osg::LineSegment that will intersect your >>> >> scene... >> >>> all the way through. So if you have (for example) a box shape, and >>> >> you >> >>> are picking one side, it's very possible (in fact, almost certain, >>> unless you've done something special to prevent it) that the list of >>> pick items will return the opposite side to you also; so you are >>> >> correct >> >>> Jeremy in saying that you can pick the same "object" twice. >>> >>> I've created my own post-filter to clean-up the list of drawables and >>> geodes so that I don't treat them twice. >>> >> >> Is this code you would have permission to post here or attach to a >> response? :) I'd be very interested to see optimized versions of such an >> operation... >> >> >>> I hope this helps. >>> >>> Thanks >>> >>> >>> -----Original Message----- >>> From: [EMAIL PROTECTED] >>> [mailto:[EMAIL PROTECTED] On Behalf Of Jeremy L. >>> Moles >>> Sent: Tuesday, June 12, 2007 10:59 AM >>> To: osg users >>> Subject: Re: [osg-users] Pick >>> >>> On Tue, 2007-06-12 at 16:52 +0200, [EMAIL PROTECTED] wrote: >>> >>>> Dear All >>>> I implemented a Picking function... >>>> In order to debug the picking function I simply print in monitor the >>>> >>> id of the picked drawable. >>> >>>> The problem is that the picking function is called two time for each >>>> >>> mouse click. >>> >>> I don't think your picking function is getting called twice--I think >>> you're seeing the same object twice in your pick results, which is >>> something I'm running into myself. I just started learning picking >>> >> this >> >>> weekend, so I'm not 100% sure what's going on, but perhaps someone >>> >> else >> >>> will be able to chime in and help us both. >>> >>> I originally suspected this had something to do with having a 2D HUD >>> Camera in my scene, but I don't think that's it. >>> >>> _______________________________________________ >>> osg-users mailing list >>> osg-users@openscenegraph.net >>> http://openscenegraph.net/mailman/listinfo/osg-users >>> http://www.openscenegraph.org/ >>> >>> >> >> _______________________________________________ >> osg-users mailing list >> osg-users@openscenegraph.net >> http://openscenegraph.net/mailman/listinfo/osg-users >> http://www.openscenegraph.org/ >> _______________________________________________ >> osg-users mailing list >> osg-users@openscenegraph.net >> http://openscenegraph.net/mailman/listinfo/osg-users >> http://www.openscenegraph.org/ >> >> > > _______________________________________________ > osg-users mailing list > osg-users@openscenegraph.net > http://openscenegraph.net/mailman/listinfo/osg-users > http://www.openscenegraph.org/ ------------------------------------------------------ Leggi GRATIS le tue mail con il telefonino i-modeĀ di Wind http://i-mode.wind.it/ _______________________________________________ osg-users mailing list osg-users@openscenegraph.net http://openscenegraph.net/mailman/listinfo/osg-users http://www.openscenegraph.org/
