That type would certainly be close. I am looking for a more "slate
like"/"platey" appearance but that might get me started.
Can you be more specific about the function?  I have tried the function but
simply end up with a "rounded box." I tried:

  isosurface {
     function {f_rounded_box(x,y,z, 0.25, 0.25, 0.25, 0.25) }
     pigment{Red}
     scale 0.5
  }

I'm no math whiz so I'm really not certain what the last four values should
really be.  I've tried various values but always end up with a simple
rounded box.  How do you get yours to look so randomish?  I even tried using
a noise function like this:

  isosurface {
     function {f_rounded_box(x,y,z, f_noise3d(0, y, z), f_noise3d(0, y, z),
f_noise3d(0, y, z), f_noise3d(0, y, z)) }
     pigment{Red}
     scale 0.5
  }

to no avail.  I've used Povray for many years but I am find isosurfaces to
be a bit of a black art.


"John & Amy Robinson" <jro### [at] columbusrrcom> wrote in message
news:3c9ca1c3$1@news.povray.org...
>
> "Patrick Dugan" <pat### [at] netinsnet> wrote in message
> news:3c9c9e4e@news.povray.org...
> > How do/can you make a isosurface box that has a "rough" surface?
> > I have a (poor) image I made by hand of a "turbulent" box shape.
> Basically
> > I am trying to
> > make boxes that look like randomly made rectangular stones that have
been
> > placed within
> > a stone wall (like a fireplace) but have been chipped to be somewhat
> > rectangular so they
> > can be placed somewhat close together.
> >
> >
> >
> >
> >
> >
> >
> i used the f_rounded_box function for the walls in this image
> http://www.fishinglog.com/Art/bigThe%20Keep.html
>
>
>
>

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