I'm trying to put waves on water that appears random but is in fact
repetitive. What works well is something like this:

plane {<0,1,0>, 0
  texture {
    pigment { rgb <0.2, 0.2, 0.2> }
    normal { bumps 0.08 turbulence 0.6 }
    finish {
      ambient 0.05
      diffuse 0.55
      brilliance 6.0
      phong 0.8
      phong_size 120
      reflection 0.6
    }
  }
}

The only problem with this is that "bumps" is a random function. I other
words the waves on my water is random over the entire surface. I want to be
able to do a cyclic animation where I have something like translate
<clock*2*pi, 0, 0> so that it appears as if I'm constantly moving over the
rippled water.

I hope I'm making sense.

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