Function loft

cadquery/occ_impl/shapes.py:7375–7503

Loft edges, wires or faces. For faces cap has no effect. Do not mix faces with other types.

(
    s: Sequence[Shape],
    cap: bool = False,
    ruled: bool = False,
    continuity: Literal["C1", "C2", "C3"] = "C2",
    parametrization: Literal["uniform", "chordal", "centripetal"] = "uniform",
    degree: int = 3,
    compat: bool = True,
    smoothing: bool = False,
    weights: tuple[float, float, float] = (1, 1, 1),
    history: History | None = None,
    name: str | None = None,
)

@multidispatch
def loft(
    s: Sequence[Shape],
    cap: bool = False,
    ruled: bool = False,
    continuity: Literal["C1", "C2", "C3"] = "C2",
    parametrization: Literal["uniform", "chordal", "centripetal"] = "uniform",
    degree: int = 3,
    compat: bool = True,
    smoothing: bool = False,
    weights: tuple[float, float, float] = (1, 1, 1),
    history: History | None = None,
    name: str | None = None,
) -> Shape:
    """
    Loft edges, wires or faces. For faces cap has no effect. Do not mix faces with other types.
    """

    results: list[TopoDS_Shape] = []
    builders = []
    # for history handling
    tops_hist = []
    bots_hist = []
    solid_hist = History()

    def _make_builder(cap: bool) -> BRepOffsetAPI_ThruSections:
        rv = BRepOffsetAPI_ThruSections(cap, ruled)
        rv.SetMaxDegree(degree)
        rv.CheckCompatibility(compat)
        rv.SetContinuity(_to_geomabshape(continuity))
        rv.SetParType(_to_parametrization(parametrization))
        rv.SetSmoothing(smoothing)
        rv.SetCriteriumWeight(*weights)

        return rv

    # try to construct lofts using faces
    for el in _get_face_lists(s):
        # build outer part
        builder = _make_builder(True)
        builders.append(builder)

        # used to check if building inner parts makes sense
        has_vertex = False

        for f in el:
            if isinstance(f, Face):
                builder.AddWire(f.outerWire().wrapped)
            else:
                builder.AddVertex(f.wrapped)
                has_vertex = True

        builder.Build()
        builder.Check()

        # build inner parts
        builders_inner = []
        tops = []
        bots = []