CirclesPainter.dart

  @override
  void paint(Canvas canvas, Size size) {
    var path = createPath();
    canvas.drawPath(path, myPaint);
  }

Path createPath() {
    var path = Path();
    int n = circles.toInt();
    var range = List<int>.generate(n, (i) => i + 1);
    double angle = 2 * math.pi / n;
    for (int i in range) {
      double x = radius * math.cos(i * angle);
      double y = radius * math.sin(i * angle);
      path.addOval(Rect.fromCircle(center: Offset(x, y), radius: radius));
    }
    return path;
  }