Hello, I just verified and it is indeed related to near and far planes. I am zooming my camera, and therefore, somewhere along the OSG update loops, the near and far planes will change but I don’t know what the new value is going to be.
I need to reproduce that in my code, as in: >> camera->setViewMatrix(getInverseMatrix()); >> camera->setProjectionMatrixAsPerspective(...); Can I somehow trigger the near/far plane recalculation? > On 15 Sep 2016, at 16:49, Robert Osfield <[email protected]> wrote: > > Hi Bruno, > > There a few two many unknowns for us to know what is going on. So we > can only guess. > > Could it be that the OSG's default clamping of the near/far values to > fit with the bounds of the scene in the view frustum is what is > adjusting the projection matrix? > > Try setting the ComputeFarMode to DO_NOT_COMPUTE_NEAR_FAR via > > > viewer.getCamera()->setComputeFarMode(osg::CullSetting::DO_NOT_COMPUTE_NEAR_FAR); > > Then see what happens. > > Robert. > > On 15 September 2016 at 16:18, Bruno Oliveira > <[email protected]> wrote: >> Hello, >> >> >> I am trying to set my view and projection camera matrix. I do this inside a >> custom camera manipulator code I am building. >> >> I set the camera view matrix as >> >> camera->setViewMatrix(getInverseMatrix()); >> >> After this, since I am using a perspective projection matrix, I know I need >> to update my projection matrix. I try to do this with >> >> camera->setProjectionMatrixAsPerspective(30.f, aspectRatio, 0.5f, 500.f); >> >> This results in the following projection matrix, >> >> 2.69691 0 0 0 >> >> 0 3.73205 0 0 >> >> 0 0 -1.002 -1 >> >> 0 0 -1.001 0 >> >> >> However this is wrong, my matrix should be something similar to >> >> 2.69691 0 0 0 >> >> 0 3.73205 0 0 >> >> 0 0 -50 -1 >> >> 0 0 -1.01309e+06 0 >> >> >> What am I doing wrong? What else do I need to correctly compute the >> projection matrix? >> >> _______________________________________________ >> 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
