In article <38738237.B782BECC@skynet.be>, Fabien Mosen 
<fab### [at] skynetbe> wrote:

> If I remember well, the "lower" part of the "inside" of a HF extends
> to the infinity, just like a plane does.

Hmm, it seems you are right. I was fooled by the section of the 
documentation that says the height field fills a 1*1*1 box. I assumed 
all points in that box and under the height field were considered 
"inside".

-- 
Chris Huff
e-mail: chr### [at] yahoocom
Web page: http://chrishuff.dhs.org/

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