news:web.42432a53267da791190422530@news.povray.org...
> Actually both functions are needed. The principle is not new, it has been
> discussed here earlier. In this scene I used eval_pigment() and a spotted
> pigment to distribute the trees and trace() to find the exact height of
the
> height_field at a given position.
That was my guess :-)
>
> You could do the same thing with random distribution of the trees but I
> think a little structure in the forest looks better.

I agree

Marc

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