ClipPath and CustomClipper

custom_clipper.dart

ClipPath(
  clipper: HexagonClipper(radius: radius),
  child: SizedBox(
    width: diameter,
    height: diameter,
    child: ColoredBox(
      color: Colors.blueAccent.withOpacity(0.7),
    ),
  ),
)

class HexagonClipper extends CustomClipper<Path> {
  const HexagonClipper({
    required this.radius,
  });

  final double radius;
  
  @override
  Path getClip(Size size) {
    final center = Offset(size.width / 2, size.width / 2);
    Path path = Path();
    
    path.addPolygon(
      Offset(x, y),
      ...
      ...
    );
  }
}