Ah, thanks a lot :-) Of course that was the reason! Thats also explains why it worked with different contexts.
Thanks Karl On 10/17/07, Robert Osfield <[EMAIL PROTECTED]> wrote: > > Hi Karl, > > The master and slave cameras will be drawn in the same frame. > > If you see a difference then it must be down to the propagation of the > settings from the master to the slave being out of sync. I don't know > how you set the master, perhaps you are setting it after the sync > point. The View::updateSlaves() method that does this sync is called > from within Viewer::updateTraversals() so perhaps you are setting the > master camera after this. > > Robert. > > On 10/17/07, Karl Heijdenberg <[EMAIL PROTECTED]> wrote: > > Hi and thanks for the tip about where to look for code for the > > projectionOffset. I now have a slave camera with the expected projection > > offset next to the master camera. > > > > One thing that I found out was that the slave camera is drawn one frame > > after the master. Both cameras are drawn to the same graphics context. I > can > > easily see this in the seam between the two cameras by moving my scene > up or > > down at a constant speed. My slave camera is then drawn a at a constant > > distance behind my master camera. > > > > In the osgwindow example separate graphics contexts are used for master > and > > slave cameras. Is that the way it should be done? And then why? > > > > If I set up the two cameras with different graphics contexts they draw > > within the same frame (when I use the "thread per context" threading > model). > > > > Regards Karl > > > > > > > > On 10/15/07, Robert Osfield <[EMAIL PROTECTED]> wrote: > > > > > > Hi Karl, > > > > > > Have a look at the osgwindows example, or the > > > View::setUpViewAcrossScreens() source code in > > > src/osgViewer/Viewer.cpp. > > > > > > On 10/10/07, Karl Heijdenberg < [EMAIL PROTECTED]> wrote: > > > > Hi, > > > > > > > > I'm trying to add two cameras to one View in compositeViewer. > > > > The first camera is added as a master camera and the second as a > slave > > > > camera. > > > > > > > > Frustums for the cameras: > > > > master={-50, 0, -40, 40} > > > > slave={0, 50, -40, 40} > > > > > > > > For the first camera I set the projectionMatrix with > > > > setProjectionMatrixAsFrustum. > > > > > > > > How do I calculate the projectionOffset for the slave camera? > > > > > > > > The offset is needed in call to addSlave(osg::Camera* camera,const > > > > osg::Matrix& projectionOffset, const osg::Matrix& viewOffset, bool > > > > useMastersSceneData=true); > > > > > > > > I've also tried to set the reference frame to > > ABSOLUTE_RF_INHERIT_VIEWPOINT > > > > and then call the setProjectionMatrixAsFrustum for both cameras. > This > > test > > > > ended up in a black scene for the second camera. Am I missing > something? > > > > > > > > Thanks, Karl > > > > _______________________________________________ > > > > 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 > > > > > > > > > _______________________________________________ > > 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 >
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