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> BTW do you really need an iso for your water? Photons work fine
> with a normal. The only reasons to use an iso IMHO would be:
>
> a) your function is not suitable for a normal (anyone want to
> comment on this?)
>
> b) you are showing the water surface where it touches another
> object, and you therefore want a genuinely perturbed surface.

or c) you want to view the "waves" from a near-perpendicular
direction, and you want the front-most waves to obscure the more
distant waves ;-)

I had a look anyways - not a half bad image!

Andrew.

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