Thanks for pointing out , i looked into the discussion and i think the current setupd with kd-trees wont help me with my idea. Can anyone point me to some tool/project which creates just the kd-tree ( near to optimal ) given a 3d scene . Any help would be appreciated.
Thanks Maruti Borker IIIT Hyderabad Website:- http://students.iiit.ac.in/~maruti Blog:- http://marutiborker.wordpress.com On Thu, Sep 4, 2008 at 3:00 PM, Robert Osfield <[EMAIL PROTECTED]>wrote: > HI Maruti, > > Lots was discussed on osg-users about the KdTree implementation in the > OSG when I intergrated the functionality, so have a look through the > osg-users archives in June and July. The quick answer is that > KdTree's hang off Drawables, and when do intersection testing first > coarsed grained culling is done by the scene graphs hierachy of > bounding spheres/boxes, then finally fine grained testing is done > against the KdTree hanging of the drawables. > > Robert. > > On Thu, Sep 4, 2008 at 7:27 AM, maruti borker <[EMAIL PROTECTED]> > wrote: > > > > Hello, > > I was amazed to see the development OSG has made, the > > last version i used it was 2.3.4. Coming to the topic, i wanted to know > how > > a scenegraph was being linked to a kd-tree for finding out intersections. > I > > am thinking of an application which needs querying of spatial data, for > > which i thought of using kd-trees , but i also thought of having a > > scenegraph for rendering purposes. I looked at a work "Razor: > > Multi-resolution ray tracing for dynamic environments" by William mark > and > > Warren hunt. They also lazily linked a scene-graoh and a kd-tree. I > wanted > > to know how the kd-tree is being linked to a scenegraph in OSG and also > > whether i could actually access the kd-tree for performing algorithms on > top > > of it. And also an advice whether using this linkage in OSG is useful for > > storing spatial data. Do mail back incase of any doubts or clarifications > . > > > > > > Maruti Borker > > IIIT Hyderabad > > Website:- > > http://students.iiit.ac.in/~maruti<http://students.iiit.ac.in/%7Emaruti> > > Blog:- http://marutiborker.wordpress.com > > > > _______________________________________________ > > 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 >
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