spiral_path.dart

Path createSpiralPath(Size size) {
    double radius = 0, angle = 0;
    Path path = Path();
    for (int n = 0; n < 200; n++) {
      radius += 0.75;
      angle += (math.pi * 2) / 50;
      var x = size.width / 2 + radius * math.cos(angle);
      var y = size.height / 2 + radius * math.sin(angle);
      path.lineTo(x, y);
    }
    return path;
  }