So in the image below you see 4 "frames". This is how I see this animation playing in my head.(sorry for quality). Basicly, what I wanna do is to animate one end of a line sliding on the path of the circle. One end (let's call it B) will be moving on the circle, while the other end (A) will be stationary.
So I kinda know how to change position of a point on a path(and thus animate it), but I don't know how to make it move along some defined trajectory (or path; in this case the circle's arc).
Also, a quick small question: is it possible to import a file from Adobe Illustrator into After Effects such that AE recognises the shapes as paths(I mean the ones that are paths in Illustrator). When I do the import, AE thinks those are just images, you know, general objects, not paths. I wanna do some geometry animation, so It'd be helpful I that kind of import would actually work.