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
