flutter canvas draw a ring with innerRadius and outerRadius

gistfile1.dart

 double centerX = positioned.dx;
    double centerY = positioned.dy;

    // Inner and outer radii
    double innerRadius =radius;
    double outerRadius = 500+ ((1 - progress) *500);

    Paint ringPaint = Paint()
      ..color = colorShadow.withOpacity(opacityShadow) // Color for the ring
      ..style = PaintingStyle.stroke
      ..strokeWidth = outerRadius - innerRadius; // Adjust the width of the ring

    // Draw the ring using stroke
    canvas.drawCircle(Offset(centerX, centerY), (outerRadius + innerRadius) / 2, ringPaint);