[osg-users] Bug in Cull Visitor

[Gedalia Pasternak]

Both CullVisitor and it's base class NodeVisitor have members named
_traversalNumber. Yielding duplicate member variables with the same name,
and inconsistent behavior depending on how you access the class.
Cull visitor's should be renamed, maybe to _cullTraversalNumber or
something that wouldn't conflict with the base class. An accessor would be
nice as well. In the case of NodeVisitor it's what frame it's up to, for
cull visitor it's what accepted object it's up to (
   // Otherwise need to create new renderleaf.
    RenderLeaf* renderleaf = new
RenderLeaf(drawable,projection,matrix,depth,_traversalNumber++);
)

-Gedalia
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