Method fromFace

cadquery/occ_impl/nurbs.py:241–272

Construct a surface from a face.

(cls, f: Face)

    @classmethod
    def fromFace(cls, f: Face):
        """
        Construct a surface from a face.
        """

        assert (
            f.geomType() == "BSPLINE"
        ), "B-spline geometry required, try converting first."

        g = cast(Geom_BSplineSurface, f._geomAdaptor())

        uknots = np.repeat(list(g.UKnots()), list(g.UMultiplicities()))
        vknots = np.repeat(list(g.VKnots()), list(g.VMultiplicities()))

        tmp = []
        for i in range(1, g.NbUPoles() + 1):
            tmp.append(
                [
                    [g.Pole(i, j).X(), g.Pole(i, j).Y(), g.Pole(i, j).Z(),]
                    for j in range(1, g.NbVPoles() + 1)
                ]
            )

        pts = np.array(tmp)

        uorder = g.UDegree()
        vorder = g.VDegree()

        uperiodic = g.IsUPeriodic()
        vperiodic = g.IsVPeriodic()

        return cls(pts, uknots, vknots, uorder, vorder, uperiodic, vperiodic)

    def __call__(self, u: Array, v: Array) -> Array:
        """