"Marc Jacquier" <jac### [at] wanadoofr> wrote:

> news:web.424273a8915ff18c48a3959e0@news.povray.org...
>
> Gorgeous!!
> It could do an excellent picture for an adventure book.
> Do you use eval_pigment to choose which specie will be found at this or that
> place or do you use it instead of trace()?
>
> Marc

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.

You could do the same thing with random distribution of the trees but I
think a little structure in the forest looks better.

Christoph

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