Re: Strange Problem

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Scott McMillan (mcmillan++at++cambridge.com)
Wed, 25 Feb 1998 17:46:32 -0500

On Feb 25, 2:08pm, Dave Russell wrote:
> Subject: Strange Problem
> ...
> objects. If they are loaded within the first couple of frames, everything
> seems to work fine; however, if we wait a little while to load the
> additional models (several seconds), the next call to pfNodeIsectSegs
> takes a VERY long time to return.
>-- End of excerpt from Dave Russell

Shoot, I have to go back to May 1995 to recall a similar problem. The slow
down in that case was because of all the isect processing done with NAN's.
My problem: I was not initializing one of the segments and NAN's were getting
into the isect code, and just spread from there....i.e., it would start to
"infect" my later isect computations (I cannot recall if the infection process
was through my code or Performer's).

In the end the easy way to track it down was to set

       pfNotifyLevel(PFNFY_FP_DEBUG);

Of course I did not know that before I started putting printf's all over
the place...

Hope this helps,
scott

--
Scott McMillan


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