Hello Christian,
[EMAIL PROTECTED] wrote:
> Hi to everyone.
> I have some problems with managing the scenegraph with 2 threads.
> Since I had problems, I tried to follow the tutorials in the chapter
> "multithreading".
> I made the example program work (the one that renders a torus and
> rotates it with a secondary thread that possess a second aspect of the
> scenegraph).
> Then I changed this little program in this manner: instead of rotating
> the torus, I made the torus "flicker" by calling the node->setActive()
> (true or false alternatively) with the second thread. The problem is
> that this modification don't work!
> Instead, I got this warning: "recurse: core is Null, don't know what
> to do!"
>
> So, this is what I think:
> - I haven't understood how aspects work :)
> - there is a field mask to set when calling the node->setActive(), but
> I haven't found which
this one is a bit tricky, I have to admit. The setActive method is only
a convenience/backwards compatibility wrapper for the traversal mask, so
you need to use that field's mask:
beginEditCP(someNode, Node::TravMaskFieldMask);
someNode->setActive(false);
endEditCP(someNode, Node::TravMaskFieldMask);
> - aspects don't manage all the modifications of the scenegraph
> - (other)
>
> If I use the aspect #0 instead of #1 everything works...
> Can someone help me?
Hopefully adding the above does the trick. If you are unsure whether a
field mask is responsible for a problem, you could try to not use
explicit masks and see if that makes a difference, i.e. just use
beginEditCP(someNode);
someNode->setActive(false);
endEditCP(someNode);
Hope it helps,
Carsten
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