Hi!
Here comes a tiny update.. Methinks the water looks better around the boat,
but totally dull at the "shore" compared to the first try..
The iso in the gradient10_detail.jpg (newest image) goes like this:
#declare fn_Pigm=function {
    pigment {
      wrinkles
      color_map {
        [0 color rgb 0]
        [1 color rgb 1]
      }
    }
  }
    isosurface {
        function { y-fn_Pigm(x/2, 0, z/2).gray*0.25}
            max_gradient 1
            accuracy 0.04
            contained_by { box { <-26/2,-4,-26/2>, 25/2 }}
        rotate z*-5
        scale <2,2,2> translate <-RW,1.85,0>
        interior {ior 1.33}
        texture {T_W}
    }
The iso in the older image (gradient09_detail.jpg) uses this function{}:
function { y+f_noise3d(x, 0, z) }

I'm not going for real-world-realistic-water..(I belive the other objects in
the scene wouldn't fit into that..) I'm searching for a more cartoonish,
dramatic look. Any of you iso-surface people out there who can point me in
the right direction? :)

-Peter

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Preview of image 'gradient09_detail.jpg'