How to use the afdko.pdflib.pdfgeom.bezierArc function in afdko

def ellipse(self, x1, y1, x2, y2, stroke=1, fill=0):
        """Uses bezierArc, which conveniently handles 360 degrees -
        nice touch Robert"""
        pointList = pdfgeom.bezierArc(x1,y1, x2,y2, 0, 360)
        #move to first point
        self._code.append('n %0.4f %0.4f m' % pointList[0][:2])
        for curve in pointList:
            self._code.append('%0.4f %0.4f %0.4f %0.4f %0.4f %0.4f c' % curve[2:])
        #finish
        self._code.append(PATH_OPS[stroke, fill, self._fillMode])

def ellipse(self, x, y, width, height):
        """adds an ellipse to the path"""
        pointList = pdfgeom.bezierArc(x, y, x + width,y + height, 0, 360)
        self._code.append('%0.4f %0.4f m' % pointList[0][:2])
        for curve in pointList:
            self._code.append('%0.4f %0.4f %0.4f %0.4f %0.4f %0.4f c' % curve[2:])

def arcTo(self, x1,y1, x2,y2, startAng=0, extent=90):
        """Like arc, but draws a line from the current point to
        the start if the start is not the current point."""
        pointList = pdfgeom.bezierArc(x1,y1, x2,y2, startAng, extent)
        self._code.append('%0.4f %0.4f l' % pointList[0][:2])
        for curve in pointList:
            self._code.append('%0.4f %0.4f %0.4f %0.4f %0.4f %0.4f c' % curve[2:])

def arc(self, x1,y1, x2,y2, startAng=0, extent=90):
        """Contributed to piddlePDF by Robert Kern, 28/7/99.
        Draw a partial ellipse inscribed within the rectangle x1,y1,x2,y2,
        starting at startAng degrees and covering extent degrees.   Angles
        start with 0 to the right (+x) and increase counter-clockwise.
        These should have x1."""

        pointList = pdfgeom.bezierArc(x1,y1, x2,y2, startAng, extent)
        #move to first point
        self._code.append('%0.4f %0.4f m' % pointList[0][:2])
        for curve in pointList:
            self._code.append('%0.4f %0.4f %0.4f %0.4f %0.4f %0.4f c' % curve[2:])

def wedge(self, x1,y1, x2,y2, startAng, extent, stroke=1, fill=0):
        """Like arc, but connects to the centre of the ellipse.
        Most useful for pie charts and PacMan!"""

        x_cen  = (x1+x2)/2.
        y_cen  = (y1+y2)/2.
        pointList = pdfgeom.bezierArc(x1,y1, x2,y2, startAng, extent)

        self._code.append('n %0.4f %0.4f m' % (x_cen, y_cen))
        # Move the pen to the center of the rectangle
        self._code.append('%0.4f %0.4f l' % pointList[0][:2])
        for curve in pointList:
            self._code.append('%0.4f %0.4f %0.4f %0.4f %0.4f %0.4f c' % curve[2:])
        # finish the wedge
        self._code.append('%0.4f %0.4f l ' % (x_cen, y_cen))
        # final operator
        self._code.append(PATH_OPS[stroke, fill, self._fillMode])