geometry.py 文件源码

def get_rings(geometry):
    if isinstance(geometry, Polygon):
        return chain((geometry.exterior, ), geometry.interiors)
    try:
        geoms = geometry.geoms
    except AttributeError:
        pass
    else:
        return chain(*(get_rings(geom) for geom in geoms))

    if isinstance(geometry, LinearRing):
        return (geometry, )

    return ()