I'm experimenting with FreeCAD to generate a mesh with multiple materials with the brep (or step) format. Unfortunately it doesn't seem possible to label the surfaces or volumes so gmsh considers them as physical names. As far as I was able to research, this is named Topological Naming, and it is currently not available in FreeCAD.

Are there any open source solid modeling tools which support this? Does gmsh support reading in the names from brep or step files (or any other format)?

Thanks,

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