banty wrote:
> 
>     I've been trying to aquaint myself with the isosurface functions in
> PoV 3.5, but as I go through the tutorials I keep getting strange
> results from the functions they tell me to input, results which don't
> show up un the example pictures.  I also get black moire like patterns
> in the surface of the rendered objects.
>     Is this a bug or is it a difference in operators between Pov 3.5 and
> mega pov?
> 

It's neither a bug nor a difference.  You have to specify a correct
max_gradient value like it is mentioned in the docs (section 3.4.4.7 and
6.5.4.5.3).  

If you are trying to render the functions in the 3.5 docs, make sure you
add a higher max_gradient than default for the later functions (it's also
mentioned in the text).

Christoph

-- 
Christoph Hormann <chr### [at] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other 
things on: http://www.schunter.etc.tu-bs.de/~chris/

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