Hi J-S, That makes sense and that was exactly my problem. Cheers I need all the help I can get, I am only a hobbyist and dont make a professional career out of it, as you can see ;)
Martin. -----Original Message----- From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Jean-Sébastien Guay Sent: 21 February 2010 13:44 To: OpenSceneGraph Users Subject: Re: [osg-users] Viewer and old producer getRenderSurface Hi Martin, > When using viewer->run() my scene appears ok and the camera/view appear to > be outside of the cow, but when updating my scene manually using > viewer->frame() I end up viewing inside the cow, how do I set my camera or > view position when updating the frame manually, does viewer->run() calculate > the view of the entire scene automatically? > I am slight lost at the moment!!! :) I saw you got it working, but just so you know there's no magic going on, here's the explanation for the above. viewer->run() automatically attaches an osgGA::TrackballManipulator to the viewer. This in turn automatically calculates the view matrix based on the scene bounds on the first frame. To get the same behavior when using viewer->frame() you would just have to call viewer->setCameraManipulator(new osgGA::TrackballManipulator); . Or you can modify the main camera's view matrix each frame before calling viewer->frame(). You can use viewer->getCamera()->setViewMatrixAsLookAt(...); for example, or build your own view matrix and set it with viewer->getCamera()->setViewMatrix(matrix); . Hope this helps explain it a bit. J-S -- ______________________________________________________ Jean-Sebastien Guay jean-sebastien.g...@cm-labs.com http://www.cm-labs.com/ http://whitestar02.webhop.org/ _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
