Bob Hughes wrote:
> 
> That's good and all but the obvious question would be "Why?" since 'trace()'
> already does this.
> Even so, I had thought before that the normal vector would be a great addition
> to 'hf_height_at' anyway.  Most of all though I'm curious as to how you
> managed to do this with a macro (because I am always curious).
> 
> Bob

Ooops, 
I already expected, that there would be another way, because it seems to
be a quite useful function, not only for heightfields. 

Anyway, code is in p.t.s-f.  

Christoph

--
Christoph Hormann <chr### [at] gmxde>
Homepage: http://www.schunter.etc.tu-bs.de/~chris/

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