Hi all again, Robert: for you last question; yes, I have near/far culling enabled and the near/far setting is compute_near_far_using_bounding_volume. If the near far modification that is taking place should be very small, somehow I am still getting quite significant jumps because some objects near the camera get culled when I would not like that to happen. When I enable culling for near/far planes, it seems like osg takes into account my preferred near/far planes and is NOT auto-computing. It does do some re computation as I change the LODScale. Why does this happen?
Paul: >Do you get the same behavior when viewing your database in osgviewer and >hitting the * and / keys? > -Paul Sorry Paul, but it is hard for me to say, because with osgviewer I only notice the terrain loosing or gaining detail, but since I am unable to dump the camera information in osgviewer I cannot compare it to my application's printouts of near far planes, but thanks for the advice. -Jose On Sat, September 20, 2008 1:53 am, Robert Osfield wrote: > Hi Jose, > > The LODScale does not affect the near/far planes and certainly won't > affect near/far plane culling if enabled. If you have compute > near/far planes on the camera enabled then LODScale might change the > depth range a little as different children of LOD gets selected, but > generally this would be very small. Could it be that you have > enabled near/far plane culling by not disabled the compute of the > near/far? Both settings are on the camera. > > Robert. > > On Fri, Sep 19, 2008 at 11:01 PM, Joseanibal Colon Ramos > <[EMAIL PROTECTED]> wrote: >> Hi all, >> >> I am getting this rather weird effect when playing with the setLODScale >> values in my application. I have a large pagedLOD terrain, with near/far >> planes culling mode enabled for my camera, and I am looking at a certain >> direction in the scene. I added osg's lod scale handler so that I can >> modify the value interactively (with the * and / keys, just like in >> osgviewer) and it turns out that as I change that value, and I dump my >> application's debug information, I notice the the near/far planes do not >> remain constant, although I am not moving around the scene and I am >> always >> looking in the same direction. This causes problems because the clipping >> planes change as a result of changing the LOD scale and my non-LOD >> objects >> beyond the planes get culled. I don't think that the clipping planes >> should change at all if I am not moving my camera. I should still see >> the >> objects that are within a constant near/far distance, and I should only >> observe different level of detail on the LOD objects as I change the >> scale. What am I missing here? >> I am using osg.2.6.0 on a 64bit intel linux machine. Thanks, >> >> -Jose >> >> _______________________________________________ >> 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 > _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
