Hi,
as far as I know there are no automatic normal calculations in osg or
producer. But you can set up OpenGL to automatically normalize the
normals, see docs to PositionAttitudeTransform for that.
In your prototype the rest of the scenegraph will probably have been
different. If there are no normals, I guess that the behaviour is
undefined. I also once had a geometry with wrong normals, and it looked
diffferent in my sceneview and in a ProducerViewer. Maybe optimization
will change everything, too.
Have a look at osggeometry for 99 ways to define a geometry with normals ;-)
Regards,
Andreas
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