-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi,
On 2009-12-12 00:20, HyeongCheol Kim wrote: > Hi, jan, > Thanks, a lot. > I don't know how to appreciate that, Thanks. > > When I started how to use osg it was really difficult because there > was no any reference book except for just function reference book. > Actually there is a book published on OSG. I think that there is a link on the website. There are also quite a few tutorials and examples available as well. > I have been thinking the interoclur point in nagative parallax means > two camera's intersection in perspective mode so I have tried to > change focal lengh. But it look like just intersection of cameras' > FOV as your explaination. I am not sure what you mean by "interoclur" point. The camera optical axes are parallel for proper stereo, they do not intersect. Only the frusta do. If your optical axes intersect (the cameras are turned towards each other), you are doing the "toe-in" stereo, which is incorrect and causes eye strain. > So you mean because OSG use just asymmetric frustum, just set some variables as you written and set object to have appropriative coordinate. No, what I meant is that if you start fiddling with the projection matrices and set them based only on focal length, you will get symmetric frusta - if your cameras are parallel, parts of the screen will not be in stereo, because the frusta will not overlap completely (see the description and illustrations on Bourke's web site - it is pretty self-explanatory). The environment variables were mentioned because you can achieve what you want without going deep into OSG - what you want is a completely standard setup. It will work without doing anything, just set the size of the screen and the viewer distance from it correctly. > And VizWall might be projection plane. VizWall is actually this: http://www.cyviz.com/cyviz/public/openIndex?ARTICLE_ID=108 That is the setup the settings I gave you were for. Regards, Jan -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iD8DBQFLIwqIn11XseNj94gRAgPZAJ4gh2ObJjk+5NL4b7Mix0wSL/IBkQCg3Kjn ppu1q4QAMf130jiOpl9hcGg= =/4jr -----END PGP SIGNATURE----- _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
