s = 1.8 (slider from -3 to 3, step 0.2)
u = 2 (slider from -3 to 3, step 0.2)
parallelX = CurveCartesian((cosh(s) * cos(t)), ((-sinh(s)) * sin(t)), t, 0, 6.283185307179586)
parallelY = CurveCartesian((cosh(t) * cos(u)), ((-sinh(t)) * sin(u)), t, -10, 10)