pfChannel and node callbacks

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Anita Kishore (kishore++at++triavest.com)
Tue, 8 Jul 1997 15:36:03 -0700

Hi folks:

        Can someone answer the following question?

In my performer application, the channel's position and orientaion at any
instant of time may consist of values from several sources (eg. from GUI
through the user, from a real camera etc.). For a particular geode in the
scenegraph, I do not want the channel to have GUI input values (even though
the user may be changing values from there), ie: this node should only be
affected by real camera values and not GUI values. This can perhaps be done
by assigning pre and post callbacks to the geode. In the pre callback, I
subtract out the GUI contribution to the channel values and in the post, I
reset them back. Is this the right way, and if so, which of APP/CULL/DRAW
traversal callbacks should I use? Any other suggestions?

Thanks for any feedback.

-anita
kishore++at++triavest.com

-- 
Anita Kishore
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