Cory Riddell wrote:
Unless you've hidden some deeper question within your question, the
answer is to simply do this:
A->addChild( B );
B->addChild( D );
C->addChild( D );
Well, I haven't actually tried it yet, but Gordon says none of the
traversal routines will ever see "C". This makes sense to me. Is it wrong?
But, the question you asked was in your original post was: how to create
it and is it possible to create it? I think my code snippet answered
that. :-)
Anyhow, I think Gordon over-generalized. You could use a CompositeViewer
with multiple views, for example, one rendering the scene graph from
root node A and one rendering from root node C. You could also write a
NodeVisitor that uses the TRAVERSE_PARENTS traversal mode. So there are
many cases where it's meaningful and useful in OSG to have multiple root
nodes.
Ultimately, the question I'd direct back to you is: what are you trying
to do, and why do you think that multiple root nodes would help?
-Paul
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