Yes!  Thank you!

 isosurface {
     function { f_rounded_box(x,y,z,0,0.75,0.75,0.75) - f_noise3d(x, y, z)*
0.25 }
     contained_by { box { -1 , 1} }
     max_gradient 0.5
     pigment{Red}
     scale 0.2
 }

I made the function smaller than the box and finally got something like I
want.

(I'm sorry I'm so dense about this.)


"Christoph Hormann" <chr### [at] gmxde> wrote in message
news:3C9CB8C2.E4D0FC55@gmx.de...
>
>
> Patrick Dugan wrote:
> >
> > [...}
> >  isosurface {
> >      function { f_rounded_box(x,y,z,0,1,1,1) - f_noise3d(x*5, y*5, z*5)*
> > 0.25 }
> >      pigment{Red}
> >      scale 0.2
> >  }
> >
> > [...]
> > From the tutorial it
> > seemed to be the most likely function, but it apparently isn't.
>
> As said in the other post you need an appropriate container object.  In
> your example all surfaces are outside the (default) container, therefore
> you only see the container itself.
>
> Christoph
>
> --
> POV-Ray tutorials, IsoWood include,
> TransSkin and more: http://www.tu-bs.de/~y0013390/
> Last updated 18 Mar. 2002 _____./\/^>_*_<^\/\.______

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