Gmsh of STL with recombine appears to generate Tri and Quad Facets with area which is zero or negative
We are trying to mesh as an STL and recombine the attached object (TestShield_Gmsh_MinBrep.brep Saved as Brep)
When we process the Mesh using our workbench in FreeCAD it looks like a number of the Tri and Quad Facets have areas of zero and some negative. see FreeCAD report ViewTestShield-ReportView.txt At present we ignore such Facets but that does not give us much confidence in the Mesh.
We are also having problems with Geant4 not happy about various aspects of a number of facets. In the FreeCAD report view you will see a number of failures on creation of Quads ( Due to being non Planar - we suspect ). In these cases we try to create as two triangles. It would help with our debugging if there was an option in Gmsh to only produce Quads which are planar.
Script with what we believe is the same parameters as using the Gmsh python lib in FreeCAD testMinGmsh.py
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