(2020-12-14, 8:28)Philippe Hurbain Wrote: Not sure it really helps: once you create the mirrored subfile, you'll have to unmirror the rotation matrix... Perhaps just mirror the position of subfile?
It's extremely useful. Take, for example, the Batwing I just posted. The wing edge segments are subfiles and the main model is symmetrical but mirrored. Since I'm not changing the origin of the segments (i.e. the rotation point), if LDCad mirrored the matrices and inverted the position of subfiles, I could simply duplicate the subfile that contains the positioned/rotated segments, mirror, and then duplicate/mirror the segments. This happen a lot in highly symmetrical models.