Culling callbacks

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Jean BENOIT (vsm_mrs++at++compuserve.com)
Mon, 21 Apr 1997 08:21:35 -0400

I think that a PreCull Callback works , and you can use pfContains..
Functions.
but you have to get or define your frustum at all cycle. the other is to
use pfTravFunc with PFCULL type, for some of your nodes.

Yoel
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