dav### [at] intrepidvoygrcom wrote:
> 
> Hello everyone, foudn the world of ISO surfaces
> 

This is *NOT* 'ISO surface' but 'isosurface'.  It has nothing to do with
the International Organization for Standardization.

> they are nice.. I am getting to the point where I understand them, however there is
a modifier that I can't quite get.  it's tne Noise3d.  I'm having just a little bit a
hard time trying this one out.. does anyone know of a link that has a "good"
explination or tutorial of the Noise3d function.
> 

BTW, could you tell your newsreader to add line breaks? These overlong
lines are quite irritating.

> I'm using a ISO Surface like:
> 
> isosurface {
>   function { x }
>   contained_by { box { <-1, -3, -1>, <1,3,1> } }
> }
> 
> When I through the Noise Modifier in the function it does some ODD stuff..
> So I was just looking for a good explination of the noise3d function
> 

The Povray 3.5 isosurface tutorial explains this in detail (if you use
megapov you will have to convert the syntax to megapov style of course).

See:
http://www.povray.org/working-docs/id000051.html#3_4_4

In short, what you probably want is:

  function { x - noise3d(0, y, z) }


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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