svg.py 文件源码

def segments(self, precision=0):
        if max(self.rx, self.ry) < precision:
            return [[self.center]]

        p = [(0, self.P(0)), (1, self.P(1))]
        d = 2 * max(self.rx, self.ry)

        while d > precision:
            for (t1, p1), (t2, p2) in zip(p[:-1], p[1:]):
                t = t1 + (t2 - t1) / 2.
                d = Segment(p1, p2).pdistance(self.P(t))
                p.append((t, self.P(t)))
            p.sort(key=operator.itemgetter(0))

        ret = [x for t, x in p]
        return [ret]