Hi Brian, yeah the sine wave script just plots a lot of points for the control polygon hull and with more points the curve will approach the hull but not quite go exactly through it. It will be quite close though.

Using an interpolated curve will make the curve go exactly through the sampled points, I guess the script could be modified to make sure that there was a point being generated at the 90 and 270 degree spots.

But doing an interpolated curve is not necessarily automatically better - it kind of applies more force to the curve and can introduce a tiny bit of wiggling to the curve's shape. Using the control polygon hull will instead be super smooth with absolutely no wiggling of any kind.

- Michael