ModernMemoires/lib/utils/CirclePainter.dart

import 'package:flutter/material.dart';

class CirclePainter extends CustomPainter {
  final double value;

  CirclePainter(this.value);

  @override
  void paint(Canvas canvas, Size size) {
    var paint = Paint()
      ..color = Colors.greenAccent.withOpacity(0.5)
      ..style = PaintingStyle.fill;

    double radius = value * 500 / 100;
    print(radius);

    canvas.drawCircle(Offset(size.width / 6, size.height / 4), radius, paint);
    //print(size.width / 6);
  }

  @override
  bool shouldRepaint(covariant CustomPainter oldDelegate) => true;
}