Tagging lines

[WalkingMarcel]

Hi,
Thank you for implementing such a great feature! I was wondering if there is the ability to tag lines from CadQuery to use in Gmsh? I would like to apply transfinite meshing in Gmsh, and for my current geometry, I need to get the tagged lines as well as the tagged faces.

[jmwright]

The plugin currently assumes 2D tagging just for surfaces, but in theory it could probably be done for 1D elements. This idea brings some questions to mind.

• Does a CadQuery edge correspond to a 1D element in Gmsh? If so, wires would need to have their constituent edges extracted.
• How do you handle tagged splines? Do you have to discretize them and associate all the individual segments with a physical group?
• Are there edges from different faces/solids that will need to be grouped via tags, similar to how the tilde (~) tags work now for faces?