Parabola/Paraboloid
z = (0..h2..#u); pi = Math.PI * 2; uh = Math.Pow(z * h, 0.5); points = Autodesk.Point.ByCoordinates( (radius * uh) *Math.Cos(0..pi..#u), (radius * uh) *Math.Sin(0..pi..#u), z ); polyCurve = PolyCurve.ByPoints(points, false);