Micha Riser wrote:
> 
> Beautiful!

Thanks.

> Is the whole landscape one isosurface?

Yes.

> Also what seems like a normal_map?

What's looking like a normal_map?  A normal would not cast shadows, you
would get ugly straight shadow lines everywhere...

> Have you somewhere a description how you figure out the isosurface
> function? 

The basic geometry is made with blobbing techniques (docs, section
3.6.3.5), the structure is nothing more than designing pigment functions -
patterns, wave forms, turbulence warps, ...

> Why does it take so long to render? Huge max_gradient for
> isosurface?

Not extremely huge (32) but the accuracy needed for the large render makes
it quite slow (0.00005).  The small render with appropriate settings is
only a few hours.

Christoph

-- 
POV-Ray tutorials, IsoWood include,                 
TransSkin and more: http://www.tu-bs.de/~y0013390/  
Last updated 13 Aug. 2002 _____./\/^>_*_<^\/\.______

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