INNER CODE UNIT · Dart

AirDefenseRadarBackgroundPainter

e200/my-flutter-challenges · air_defense_system/lib/widget.dart:283

class AirDefenseRadarBackgroundPainter extends CustomPainter {
  final double radarRange;

  const AirDefenseRadarBackgroundPainter({
    required this.radarRange,
  });

  @override
  void paint(Canvas canvas, Size size) {
    final center = Offset(size.width / 2, size.height / 2);
    final radius = min(size.width / 2, size.height / 2);

    final radialPaint = Paint()
      ..shader = SweepGradient(
        center: Alignment.center,
        startAngle: 0,
        endAngle: pi * 2,
        colors: const [

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