Method testSpline

tests/test_cadquery.py:686–723

Tests construction of splines

(self)

            result.revolve()

    def testSpline(self):
        """
        Tests construction of splines
        """
        pts = [(0, 0), (0, 1), (1, 2), (2, 4)]

        # Spline path - just a smoke test
        path = Workplane("XZ").spline(pts).val()

        # Closed spline
        path_closed = Workplane("XZ").spline(pts, periodic=True).val()
        self.assertTrue(path_closed.IsClosed())

        # attempt to build a valid face
        w = Wire.assembleEdges([path_closed,])
        f = Face.makeFromWires(w)
        self.assertTrue(f.isValid())

        # attempt to build an invalid face
        w = Wire.assembleEdges([path,])
        f = Face.makeFromWires(w)
        self.assertFalse(f.isValid())

        # Spline with explicit tangents
        path_const = Workplane("XZ").spline(pts, tangents=((0, 1), (1, 0))).val()
        self.assertFalse(path.tangentAt(0) == path_const.tangentAt(0))
        self.assertFalse(path.tangentAt(1) == path_const.tangentAt(1))

        # test include current
        path1 = Workplane("XZ").spline(pts[1:], includeCurrent=True).val()
        self.assertAlmostEqual(path.Length(), path1.Length())

        # test tangents and offset plane
        pts = [(0, 0), (-1, 1), (-2, 0), (-1, 0)]
        tangents = [(0, 1), (1, 0)]

        path2 = Workplane("XY", (0, 0, 10)).spline(pts, tangents=tangents)
        self.assertAlmostEqual(path2.val().tangentAt(0).z, 0)

    def testSplineWithMultipleTangents(self):
        """