Cool! Didn't know about the pen, though I've seen clips of similar tech being used.

I've got a long ways to go with this app though so it's still just a pet project. The position tracking is very suboptimal right now, so I need to switch to a better library. And then I need to start adding actual actions because right now the app is just a glorified object viewer.

I'm insanely flattered that you think it's interesting though. Very motivating to me.