[osg-users] Non-convex polytope picking

[Antoine Rennuit]

Dear OSG forum,

I am currently using PolytopeIntersector with rectangular polygons for picking. I am thinking of extending this selection mode with polygons than could potentially be complex, non-convex for instance (e.g. polygons resulting from hand drawn areas).

Now I understand that the osg::Polytope class can only handle convex polygons.

Does that mean that if I want to pick using non-convex polygons I need to split my non-convex polygon into multiple convex osg::Polytopes and call the IntersectionVisitor multiple times? Is this handled in OSG? Are there helpers or should I do all this on the app side?

Kind regards,

Antoine.

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