Hi Dario,
I've exported in FBX a scene structured as the above example and then I have converted this file into an OSG file (osgconv). The OSG file don't contains the NULL nodes but only the object_with_mesh.
This is not specific to the FBX loader. osgconv runs the osgUtil::Optimizer on the loaded graph (loaded from the input file) before outputting the new file, and the Optimizer can reorganize the scene graph in some ways. For example it will remove nodes it thinks are redundant. We generally set OSG_OPTIMIZER=OFF in the environment before running osgconv so this does not happen.
In our case, we often use DOF nodes with no geometry under them to position cameras / lights on models, and the Optimizer removes those by default (because it thinks they're useless if they have no geometry under them).
So I suspect something similar is happening to you. Try setting OSG_OPTIMIZER=OFF to see if that helps.
Hope this helps, J-S -- ______________________________________________________ Jean-Sebastien Guay [email protected] http://www.cm-labs.com/ http://whitestar02.webhop.org/ _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
