// Draws an ellipse centered at the current coordinate system's origin.
func (cv Canvas) Ellipse(a float64, b float64) {
C.DrawEllipse(cv.drawing, C.double(0), C.double(0), C.double(a), C.double(b), 0, 360)
}
// Draws an ellipse on the image.
//
// ox: origin x ordinate
//
// oy: origin y ordinate
//
// rx: radius in x
//
// ry: radius in y
//
// start: starting rotation in degrees
//
// end: ending rotation in degrees
//
func (dw *DrawingWand) Ellipse(ox, oy, rx, ry, start, end float64) {
C.DrawEllipse(dw.dw, C.double(ox), C.double(oy), C.double(rx), C.double(ry), C.double(start), C.double(end))
}