What is this?

This is an addon script for Blender to allow importing gmsh's native file format (".msh").

2D regions ($PhysicalNames) will get mapped to Blender materials, i.e. there are materials for all regions and all faces in such a region will use the corresponding material.

How do I use this?

Just go to File -> User Preferences -> Addons, click Install from file... and find the import_msh.py. You should then find the gmsh MSH import in the File -> Import menu (else check if the addon is enabled)

Limitations

• this only supports simple primitives (lines, triangles and quads), since I didn't need support for things like "125-node fourth order hexahedron" (yes, that's a thing in .msh)
• (tetrahedron support is included but commented out, you may try it at your own risk)
• no support for periodic elements ($Periodic) and additional element data ($ElementData, $ElementNodeData)
• no export