Also this one won't really work very well on closed curves because the way it works is to simply use the given spacing to move each item from the previous one.

By the time you march all the way around a closed curve, there is not any guarantee that the last one placed is going to end up at that same distance away from the very first one placed at the start of the curve.

I'm not completely sure what to do about that, I guess that probably you would want the spacing tweaked slightly so that the last step ended up back right on the first one. But that's going to be extremely time consuming to calculate.

- Michael