46     def _arc(self, c, rx, ry, x, y, large_arc):  argument
47         self._add('%s%s,%s 0 %d 1 %s,%s' % (c, _ntos(rx), _ntos(ry), large_arc,
50     def A(self, rx, ry, x, y, large_arc=0):  argument
51         self._arc('A', rx, ry, x, y, large_arc)
53     def a(self, rx, ry, x, y, large_arc=0):  argument
54         self._arc('a', rx, ry, x, y, large_arc)
76         rx = float(rect.attrib.get('rx', 0))
79         rx = _prefer_non_zero(rx, ry)
80         ry = _prefer_non_zero(ry, rx)
84         self.M(x + rx, y)
85         self.H(x + w - rx)
86         if rx > 0:
87             self.A(rx, ry, x + w, y + ry)
89         if rx > 0:
90             self.A(rx, ry, x + w - rx, y + h)
91         self.H(x + rx)
92         if rx > 0:
93             self.A(rx, ry, x, y + h - ry)
95         if rx > 0:
96             self.A(rx, ry, x + rx, y)