[osg-users] Strange behaviour - no explanation

[Werner Modenbach]

Hi all,

I import a 3DS model and after import it shows me a flat structure of
geodes:

Final OSG node structure looks like this:

Group

    Geode

        Geometry

    Geode

        Geometry

    Geode

        Geometry

    Geode

        Geometry

    Geode

        Geometry

    Geode

        Geometry

    Geode

        Geometry

        Geometry

    Geode

        Geometry

    Geode

        Geometry

        Geometry

    Geode

        Geometry

        Geometry

    Geode

        Geometry

    Geode

         Geometry

    Geode

        Geometry

    Geode

        Geometry

        Geometry

        Geometry

        Geometry

        Geometry

    Geode

        Geometry

    Geode

        Geometry

    Geode

        Geometry

        Geometry

        Geometry

        Geometry

    Geode

        Geometry

    Geode

        Geometry

    Geode

        Geometry

    Geode

        Geometry

    Geode

        Geometry

    Geode

        Geometry

    Geode

        Geometry

        Geometry

    Geode

        Geometry

    Geode

        Geometry

    Geode

        Geometry

        Geometry

    Geode

        Geometry

    Geode

        Geometry

        Geometry

    Geode

        Geometry

        Geometry

    Geode

        Geometry

    Geode

        Geometry

    Geode

        Geometry

    Geode

        Geometry

        Geometry

        Geometry

        Geometry

    Geode

        Geometry

    Geode

        Geometry

        Geometry

        Geometry

        Geometry

    Geode

        Geometry

    Geode

        Geometry

    Geode

        Geometry

    Geode

        Geometry

    Geode

        Geometry

    Geode

        Geometry

    Geode

        Geometry

    Geode

        Geometry

        Geometry

    Geode

        Geometry

    Geode

        Geometry   


I do a pick with a LineSegmentIntersector.
The Interesections array contains 1 hit.
It is a geometry and has 1 parent - the geode.
I want this geometry to show in line mode.
geometry->getOrCreateStateSet()->setAttribute(newosg::PolygonMode(osg::PolygonMode::FRONT_AND_BACK,osg::PolygonMode::LINE));

But many geometries show up in line mode.
I wrote a check NodeVisitor and this visitor finds many geometries being
set to LineMode.
I wrote another visitor which explicitely disables linemode on all
geometries after loading of the model:
geometry->getOrCreateStateSet()->setMode(osg::StateAttribute::POLYGONMODE,osg::StateAttribute::OFF);
I already spent many hours on that but I'm running out of ideas.

Any hint from someone in the list?

Many thanks in advance

- Werner -




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