2D vector graphics look easy at the beginning. There are some shapes, some paths, some affince transforms. But if you start to caclulate the length of a cubic b

2D vector graphics look easy at the beginning. There are some shapes, some paths, some affince transforms. But if you start to caclulate the length of a cubic bezier or try to find intersections between two cubic bezier curves, things start to get interesting. Then try to implement a solid and fast algorithm for boolean path operations. Next level of difficulty is to offset an arbitrary path, maybe with parametric offset for extra challenge. I have done all of these, and boy, I did not expect the rabbit hole to be that deep.