Am 11.03.2019 um 01:25 schrieb Bald Eagle:
> So, I was wondering if it were possible to define a pattern that depends on if
> the surface of one object is coincident with another.
> 
> object A, Object B, and an overlapping surface.
> 
> I was thinking about it initially from the perspective of ease-of-use in
> highlighting imperfections in CSG / math,

This is certainly an intriguing idea; but at a closer look it suffers 
from a big fallacy:

Coincident surface problems do /not/ arise from surfaces being 
coincident /per se/.

The true root cause of coincident surface problems is that two 
independent tests may disagree whether two surfaces are coincident or not.

By introducing a coincidence-sensitive pattern, you'd only add yet 
another test to the mix; and while it could certainly be used to solve 
some of the issues, it would inevitably open up other cases where it 
would break down itself.

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