Dennis Miller wrote:
> 
> 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.

fumctions.inc, line 661:

#declare f_marble = function {pattern {marble}}

with turbulence warp:

#declare f_marble_turb = 
  function {
    pattern {
      marble
      warp { turbulence 0.5 }
    }
  }

Christoph

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