I've always hated heightfields (read: never gotten good with them).

I think humanity would ultimately be served by someone figuring out an
algorithmic, mathematical way to "erode" a smooth rolling isosurface.

Yann Ramin wrote:

> I'm trying to freshen up my heightfields to make them a bit more like
> terrain.  I've seen examples where various packages used erosion to make
> more realistic terrain.  I (obiously) know what erosion is, how it
> works, but HOW THE HECK do you model it mathematicly????  I'm a bit lost
> there [smile].

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