Q: How did you figure out the model and animation for the sliding door in the most recent video?
A: the location of the panels is spaced out linearly, between their start and end points, but the hardest part was figuring out the rotation. according to my reasoning, it needed to be a relationship between the hypotenuse and leg of a right triangle, where the leg grows linearly and the hyponenuse stays constant. so therefore i knew i needed a trigonomic function, so i shopped around and found that acos gave me what i needed. Unfortunately this still isn't really the most authentic result, because the door would have to be spring loaded for it to look like this. What i was originally looking for was something where the first panel moves until it mostly unfolds and then the next panel moves, etc, and i know it's possible to do this but i think it would venture further into calculus than i was ready for at the time