Hi Shayne, Yes, the default is NO_LIMIT. I'm using it in version 2.9.12, but I think I might have backported it from a newer version. Sounds like you'll need to do an upgrade to get this feature.
Cheers, Farshid On Tue, Sep 11, 2012 at 10:25 AM, Tueller, Shayne R Civ USAF AFMC 519 SMXS/MXDEC <shayne.tuel...@hill.af.mil> wrote: > Just a follow on question to my previous email... > > Is this functionality of setting limits on intersection results only > found in later versions of OSG? I'm currently using OSG 2.9.11 and I > can't find any support for this. I guess this would explain why I asked > the questions in the first place. > > If true, I need to upgrade to a later version like 3.0.1... > > -Shayne > > -----Original Message----- > From: osg-users-boun...@lists.openscenegraph.org > [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of > Tueller,Shayne R Civ USAF AFMC 519 SMXS/MXDEC > Sent: Tuesday, September 11, 2012 11:13 AM > To: OpenSceneGraph Users > Subject: Re: [osg-users] LineSegmentIntersector question... > > Farshid, > > Thanks much for the input and addressing my questions. That is good news > that the support is there. > > I'm assuming the default is NO_LIMIT. Is this true? > > Thanks, > -Shayne > > -----Original Message----- > From: osg-users-boun...@lists.openscenegraph.org > [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Farshid > Lashkari > Sent: Tuesday, September 11, 2012 11:08 AM > To: OpenSceneGraph Users > Subject: Re: [osg-users] LineSegmentIntersector question... > > Hi Shayne, > > The base osgUtil::Intersector class supports setting the limits on > intersection results, using the setIntersectionLimit() method. The > current options are NO_LIMIT, LIMIT_ONE_PER_DRAWABLE, LIMIT_ONE, > LIMIT_NEAREST. > > On Tue, Sep 11, 2012 at 9:47 AM, Tueller, Shayne R Civ USAF AFMC 519 > SMXS/MXDEC <shayne.tuel...@hill.af.mil> wrote: > > 1) Does it support a feature of detecting a "hit" and then > returning without the need to compute all the intersections? This would > be sort of like a visibility test. > > Set the intersection limit to LIMIT_ONE > > > > 2) Does it have the ability to find the closest > intersection without the need to compute all the intersections? In other > words, does it step along from the starting point of the line segment > until an intersection is found and then bail out? > > Set the intersection limit to LIMIT_NEAREST. This mode could be > optimized more, but it will currently reject a subgraph if the nearest > point of the bounding sphere is further than the nearest hit. So it can > still provide significant savings in computation time. > > Cheers, > Farshid > > > > > 3) If it doesn't support these features, is it possible to > modify the LineSegmentIntersector to support these? > > > > I would think that having this capability would improve > performance where applicable. > > > > Thanks for any input in advance... > > > > -Shayne > > > > > > > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or > g > > > > > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or > g > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >
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