nostr:npub16mtxp68k8c3p2sj0wzhagt3kd8ywkvzlkfyt3vrx9cahzfz000vs8dpnwy I'm not sure about all of shapely, but at least offsetting and boolean operations AFAIK only work with polygons made with straight line segments. Shapely IIRC just wraps libgeos here. I'm not aware of any implementation of polygon clipping or offsetting that supports beziers. I know one that supports circular arcs, but converting beziers to those isn't easy either.