Fix crash on invalid faces

[openvmp]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 94.44%. Comparing base (153ed3f) to head (036bdb6).

Files	Patch %	Lines
cadquery/occ_impl/shapes.py	0.00%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1541      +/-   ##
==========================================
- Coverage   94.48%   94.44%   -0.04%     
==========================================
  Files          28       28              
  Lines        5780     5782       +2     
  Branches     1071     1072       +1     
==========================================
  Hits         5461     5461              
- Misses        193      194       +1     
- Partials      126      127       +1     

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[adam-urbanczyk]

@openvmp thanks, what is the background of this fix? How can I reproduce the issue and can a test be added?

[openvmp]

I was trying to use CadQuery to render models for PartCAD.org. Specifically this model: https://partcad.org/repository/assembly/robotics/multimodal/openvmp/robots/don1:robot

It was larger than 1GB back then. And CadQuery was crashing on some triangle. It was too much for me to find which one and why. I stopped using CadQuery for that purpose, so it's impossible to investigate any further now.

[adam-urbanczyk]

Could you share this model as a .brep file?

[openvmp]

Give me some time to add this export feature and to try reproducing the crash (I operate on much smaller models now).