def __init__(self):
self._plane = Part.Plane()
self.nb_of_turns = 2.5
self.lead = 10.0
self.cylinder = Part.Cylinder()
self.cylinder.transform(
FreeCAD.Placement(FreeCAD.Vector(), FreeCAD.Vector(1, 0, 0),
-90).toMatrix())
self.rational_approx = True
self.check_splines = False
self.max_radius = 0
self._placement = FreeCAD.Placement()
