Hi Allan, that's great that you're able to transfer trimmed surfaces to Houdini through IGES format!


> Still to note a little nuance is, that groups that are named
> inside Moi3d are empty in Houdini.
>
> They are well named, but contain nothing.

Does the same thing happen when exporting named objects from other CAD programs to Houdini as well?

If so then that's probably an issue with how Houdini decides to process the object name attributes inside of the IGES file.

Since that would be part of how Houdini behaves, I'm not sure if there would be anything I could do about it, most likely that would need to be fixed up in Houdini's importer.

You might try sending them a bug report with a sample file and see if that helps.

- Michael