path method
Implementation
@override
Path path(bool close) {
if (_path != null) {
return _path!;
}
Path path = Path();
path.moveTo(center.dx, center.dy - r);
path.arcTo(Rect.fromCircle(center: center, radius: r.toDouble()), -90 * pi / 180, 359.999 * pi / 180, true);
path.close();
_path = path;
return path;
}