On 06.01.2015 17:32, clipka wrote:

> The way you imagine this happening is /exactly/ how isosurfaces work.

It's probably not exactly the same. The request sounds more like
transitions between levels should indicate surfaces, not a fixed
value (where steeper transitions indicate more solid surfaces).

Maybe the isosurface of the 2nd derivative would do the trick,
with some special handling for discontinuities :)

Actually a "derivate" pattern modifier / warp might be pretty
cool in general although numerically tricky. Somewhat related to
the use of arbitrary patterns as normals I think.

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