Thank you very much, I will try it asap. Guy. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of J.P. Delport Sent: Wednesday, March 12, 2008 8:32 AM To: OpenSceneGraph Users Subject: Re: [osg-users] Z buffer resolution
Hi, Guy wrote: > Hello all. > > > > I have a problem with the distance between the near and far plane. The > distance between objects in the scene might be ten thousands of km (at > least 30000 km) and the objects sizes might be in several meters. > > I've noticed that when the distance between the near and far plane is > about 15km and the object size is 2m the object disappears. Also > sometimes it seems a clipping plane several meters in front of the > camera emerges. > > > > Does anyone have the same problem? > > Any ideas how to overcome it? > You could try any of these (and maybe more that I don't know of): * Disable small object culling, something like: m_SceneView->setCullingMode(m_SceneView->getCullingMode() & ~osg::CullStack::SMALL_FEATURE_CULLING); * Make the near and far planes calculate based on primitives and force the ratio: m_SceneView->setNearFarRatio(0); // default is 0.0005f; m_SceneView->setComputeNearFarMode(osgUtil::CullVisitor::COMPUTE_NEAR_FA R_USING_PRIMITIVES); * Look at 'osgdepthpartition' example, there is a node in OSG specially made for this type of situation with large depth range. cheers jp > > > Thanks, > > Guy. -- This message is subject to the CSIR's copyright terms and conditions, e-mail legal notice, and implemented Open Document Format (ODF) standard. The full disclaimer details can be found at http://www.csir.co.za/disclaimer.html. This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. MailScanner thanks Transtec Computers for their support. _______________________________________________ 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
