Hi Javier, Thanks for pointing these problems out, I hadn't tested the viewer configuration plugin recently so hadn't spotted the regression. I suspect the regression happened when we merged the new serialization support. I'll put fix the viewer configuration on my TODO list for the week.
Cheers, Robert. On Wed, Oct 13, 2010 at 10:27 PM, Javier Taibo <[email protected]> wrote: > Hi, > > I am trying to figure how to use config files for camera definition with > osgviewer. > After some search in the list and browsing the code, it seems that camera > config files > can be passed to osgviewer in two ways: the environment variable > OSG_CONFIG_FILE > and the command-line option "-c". There are some examples in > OpenSceneGraph-Data/Configuration (with .view extension), but they fail in > different ways: > > osgviewer -c Configuration/SingleScreen.view cow.osg > > Warning: Could not find plugin to read objects from file > "Configuration/SingleScreen.view". > > OSG_CONFIG_FILE=Configuration/SingleScreen.view > osgviewer cow.osg > > Warning: Could not find plugin to read objects from file > "Configuration/SingleScreen.view". > Viewer::realize() - failed to set up any windows > Warning: Could not find plugin to read objects from file > "Configuration/SingleScreen.view". > Viewer::realize() - failed to set up any windows > > It seems that the program cannot find the plug-in to read ".view" files. > What plug-in is this? Isn't it "osgdb_osgviewer"? > > Anyway, after browsing the source and experimenting a little more, I > managed to get it working > with regular .osg files (instead of .view) that I created with > osgDB::writeObjectFile from an > osgViewer::Viewer with the desired configuration. It works with the > command-line option: > > osgviewer -c mycamera.osg model.osg > > But using the environment variable OSG_CONFIG_FILE still does not work, it > keep showing > the following messages: > > Viewer::realize() - failed to set up any windows > Viewer::realize() - failed to set up any windows > > One last issue with camera config in the command-line option is that even > though it work > for the projection matrix and other features, the initial view is reset by > osgviewer. To avoid > this, I added this code to osgviewer.cpp after keyswitchManipulator creation > and configuration. > > if ( arguments.read("--noautohomeview") ) { > osg::Vec3 eye, center, up; > viewer.getCamera()->getViewMatrixAsLookAt( eye, center, up ); > keyswitchManipulator->setHomePosition( eye, center, up ); > } > > This way, the config file view matrix is set as home position for the > manipulator, what > prevents the manipulator to override it. It is activated with a command-line > option, to keep > backwards compatibility. > > Btw, I am using OSG 2.9.9. > > My questions are: > Is all this config file system deprecated? (the -c command-line option is > not shown in the > osgviewer help) > If it is not, what am I doing wrong? > Is there any way to see the initial camera position defined in the config > file, > without needing to modify the osgviewer code? > > Any help would be very appreciated. > > > Best Regards, > Javier Taibo. > > > _______________________________________________ > 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
