Draw a circle given its center and radius.

def drawCircle(self, center, radius):
        """Draw a circle given its center and radius.
        """
        if not radius > 1e-5:
            raise ValueError("radius must be postive")
        center = Point(center)
        p1 = center - (radius, 0)
        return self.drawSector(center, p1, 360, fullSector=False)