"Paolo Gibellini" <p.g### [at] teinoscom> wrote:
> Definitely interesting.
> How did you generated it? Isosurfaces?
> ;-)
> Paolo


Here's the heart of it.
For a declared bumpnbump function (you could try bumps, per se, if you
like).

#declare bottomfunc=  function{
                        pigment{function{bumpnbump(x, 0, z)}
                        pigment_map{
                         [0.52+dah rgb 0.4]
                         [0.53+dah rgb 0.5]
                         [0.54+dah rgb 0.5]
                         [0.55+dah rgb 0.45]     //walkway
                         [0.58+dah rgb 0.45]    //walkway
                         [0.59+dah rgb 0.5]
                         [0.60+dah rgb 0.5]
                         [0.61+dah rgb 0.45]
                         [1 rgb 2.5]
                        }
                        scale dualscale
                        }        }


Then, yes, draw the isosurface of this baby.

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