tu = FreeCAD.Units.parseQuantity
def mm(value):
return tu('{} mm'.format(value))
# unit mm may not be worth it here...?
rs = mm(1.9)
thicken = -(rs / mm(15)) # ~shell thickness
# defer to scale during fitting / fillet elsewhere for now... :(
m = App.Matrix()
m.rotateY(math.radians(-90))
# create a parabola with the symmetry axis (0,0,1)
parabola = Part.Parabola()
parabola.transform(m)
# get only the right part of the curve
edge = parabola.toShape(0, rs)
# add a line to the parabola to get a closed revolution body
pt = parabola.value(rs)
line = Part.makeLine(pt, App.Vector(0, 0, pt.z))
wire = Part.Wire([edge, line])
shell = wire.revolve(App.Vector(0, 0, 0), App.Vector(0, 0, 1), 360)
# make a solid
solid = Part.Solid(shell)
# apply a thickness, solid.Faces[1] is the plane that gets removed therefore
