INNER CODE UNIT · Dart

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e200/my-flutter-challenges · air_defense_system/lib/widget.dart:258

      final y = center.dy + firstArcRadius * sin(angle);

      canvas.drawLine(center, Offset(x, y), paint);
    }
  }

  void drawArc(
    Canvas canvas,
    Offset center,
    double firstArcRadius,
    Paint paint,
  ) {
    canvas.drawArc(
      Rect.fromCircle(center: center, radius: firstArcRadius),
      0,
      2 * pi,
      false,
      paint,

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