Re: scene graph subtree labelling

Brian Furtaw (brian++at++sgi.com)
Mon, 06 Dec 1999 14:32:23 -0500

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Read through the pfuTraverser man page and search for the word Traverser
in the bench.C code,

Key points to remember

1. Init your traverser pfuInitTraverser
2. Your traverser callback should return PFTRAV_CONT to keep traversing
the tree.
3. You can use conditionals like `if
(node->isOfType(pfDCS::getClassType()))' to find the types of nodes you
are interested in.
4. Specify wether it is pre or post traversal callback.
5. Call pfuTraverse with the root of your copied tree to get the work
done.
6. By default pfuInitTraverser enables the traversal to all the children
of a pfSwitch node, it is part of the pfuTraverser's mode flag.

Brian

Robert Wolfe wrote:
>
> Hi,
>
> In an effort to develop a nice generic way of duplicating
> example models of different vehicles in a simulation
> and allowing manipulating of articulations and switches
> in those models, I would like to know if there is a way
> to traverse the subtree representing a cloned model in order
> to discover any pfDCS or pfSwitch (without knowing their
> names beforehand) so that user data corresponding to a model ID
> may be assigned to each one.
>
> Thanks,
>
> Robert
> --
> Robert Wolfe, consultant
> Training Technology
> Defence and Civil Institute of Environmental Medicine
> 1133 Sheppard Ave. West,
> P.O. Box 2000,
> Toronto, Ontario
> CANADA
> M3M 3B9
> (416) 635-2065
> robert.wolfe++at++dciem.dnd.ca
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