[OpenSCAD] Fwd: check validity feature

Martin Kühne mysatyre at gmail.com
Mon Jun 13 13:50:30 EDT 2016

Hello list,

I'm not sure I understood openscad's "check validity" feature
correctly, so I thought I'd be asking about it here.
The output I'm getting for [0] is this:

CGAL error in CGAL_Nef_polyhedron3():
CGAL ERROR: assertion violation!
Expr: e->incident_sface() != SFace_const_handle()
File: /usr/include/CGAL/Nef_S2/SM_const_decorator.h
Line: 326
Valid: no

The main reason I'm asking is that the error message doesn't seem to
have anything to do with whatever form of geometric analysis of the
shape in question is done.


[0] https://gist.github.com/mar77i/c97245aa3ecc87a0000da569e02988cf

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