Thanks Chris, but looking in functions.inc, I don't see what the syntax
would be to specify say, the turbulence using an isosurface pattern
function. There is a comment in the file that says "some of these ...require
special parameters..." So does that mean that you can't specify all the
parameters of a pattern when using it as an isosurface? Or if you can, can
you give me an example? F_marble isn;t included in the 7.7 section and the
turbulence parameter isn't mentioned either.
Best,
D.

"Christoph Hormann" <chr### [at] gmxde> wrote in message
news:3DC67C0D.5028FBAA@gmx.de...
>
>
> Dennis Miller wrote:
> >
> > When you use a pattern as a function, as in:
> >
> > function {f_marble{x,y,z}}
> >
> > is there any way to control the turbulence or other properties of the
> > pattern? And why isn't the function "f_marble" (or f_otherpatterns) in
the
> > documentation?
>
> f_marble() etc. are defined in 'functions.inc', therefore you find the
> documentation in section 7.7.  A pattern function can contain a complete
> pattern definition including transformations, warps etc.
>
> Christoph
>
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