First, I LOVE this demo, it's so insightful and solves a real problem in an elegant way. My comment here is just to discuss possible improvements to the UX. I found the 180° button hard to use. One suggestion would be to to have the 'tilt' of the camera change based on the row the user picks, e.g. the closer they are to the screen, the more you'd tilt the camera upwards. This would make the entire experience work (a bit more) automatically without needing to use the 180° button at all.