Cool - I’m just getting my head into it - multiple shapes was a game changer. In terms of arc, well…
What I like is to use the script like an instrument, where I manually collide the shapes and then out again. You can make wonderful structures and musical movements doing this but it involves switching to the shape via ENC 1, and combinations of ENC and K’s. I worry about those little knobs on the norns. With an arc you can become more gestural.
On an arc I’m guessing you could free up this kind of interaction and assign each dial to a shape and therefore extend this principle so it becomes much more performance based. I’m pretty sure that you could utilise the arc to control sides and speed. With four dials you can have four shapes. I can see it becoming a wonderful performance tool. If you could switch notes seamlessly that would be ace swell.
something akin to Strettas rhythm machine https://www.youtube.com/watch?v=HM0EBvJe1s0&t=194s
I have no idea how to code this in Lua, but it would certainly extend this already awesome script!