Thomas de Groot wrote:
> Now, this reminds me of one thing I have been thinking about (but never had
> the time to experiment with): how to make small concentric ripples about
> such objects? One object is easy, but several (randomly) placed ones? I
> suppose it should be possible... but how? Any suggestion somebody?

You could use a number of averaged onion or ripples normals, each 
translated to match the position of one of the objects.

/ martin

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