scott wrote:

> My immediate thought was that you take the nVidia "Cascades" demo and 
> invert it so you are inside the geometry, not outside it...

Yeah, that demo sounds quite interesting. Pitty my graphics card is 
insufficiently expensive to run it...

> Take a look at the "rock generation" part of these slides, they have 
> some useful info for building geometry like this, and most of it is 
> directly portable to POV iso-surfaces:

Mmm, OK.

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