Hi Glenn,

Its a "potential" problem but for most part won't be if you use the
OSG sensibly - the addition and removal of subgraphs via PagedLOD is
done single threaded as part of the update traversal so as long as you
don't run code multi-threaded with this you should be fine.

If your NodePath lives longer than a frame then you'll need to convert
it into a Ref converted NodePath

Robert.


On Nov 13, 2007 4:49 PM, Glenn Waldron <[EMAIL PROTECTED]> wrote:
> Another intersection-related question for the group:
>
> LineSegmentIntersector::Intersection contains a "nodePath" member. However,
> the osg::NodePath is a simple osg::vector<Node*> that doesn't use ref_ptr's.
> So I'm not convinced that by the time you are finished intersecting, that
> nodePath member contains valid references.
>
> I mention this because I'm trying to use that nodePath and getting crashes
> that look suspiciously like the kind you get when you reference deleted
> objects. The problem only arises when traversing PagedLOD nodes (since those
> nodes aren't guaranteed to stay resident).
>
> Thanks again. -gw
>
> --
> Glenn Waldron : Pelican Mapping : http://pelicanmapping.com : 703-652-4791
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>
>
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