Can someone explain how connecting the dots works? How does it know which dot is connected to which? For example, in the curve of an S, the closest dot to the top curve might be under it, instead of beside it.
The points are a sequence of integer coordinates. The points in the outside contour of the letter are stored in clockwise order, the inner holes in counter clockwise order. There is some kind of marker to indicate where each countiur starts. The points are either on curve or off curve. On curve are touching the visible line, off curve point is a control point of a three-point quadratic Bezier curve. If there are two offcurve points listed one after the other then you create an implied oncurve point halfway between them.
