The modelview matrix is a combination of the model matrix and the view matrix. In OpenGL it manages both together. In the OSG the Camera supplies the View matrix - which defined what in world coordinates you are looking at, and the Transform nodes in the scene supply the model matrices.
For you purposes the View is probably sufficient. On 8/23/07, David _ <[EMAIL PROTECTED]> wrote: > > hmmm, maybe i don´t know so much about opengl matrixs > > is the viewmatrix the same as the modelviewmatrix??? > > is there any other way of knowing the frustrum planes??? i want these in > order to make more calculations for knowing the four vectors which go from > the camera viewpoint to the four corners of what is visible on the screen. > In the 3d-world coordinates. This is because we´ve got a huge landscape an > we want to know which area is being seen in any moment in order to make > texture layer petitions to a server. > > we´re a little stucked at this moment, so any help should be apreciated > > > > > > Date: Thu, 23 Aug 2007 12:37:50 +0100 > > From: [EMAIL PROTECTED] > > To: [email protected] > > Subject: Re: [osg-users] modelview matrix > > > > On 8/23/07, David _ <[EMAIL PROTECTED]> wrote: > > > > > > at the end of the main loop, after doing the > viewer->renderingTraversals(); > > > > So you just want the main cameras view matrix? > > > > viewer.getCamera()->getViewMatrix() > > _______________________________________________ > > osg-users mailing list > > [email protected] > > > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > > ________________________________ > Prueba algunos de los nuevos servicios en línea que te ofrece Windows Live > Ideas: tan nuevos que ni siquiera se han publicado oficialmente todavía. > Pruébalo > _______________________________________________ > 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
