如何在Flutter中创建渐变六边形

import 'package:flutter/material.dart';

class GradientHexagon extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return CustomPaint(
      painter: HexagonPainter(),
    );
  }
}

class HexagonPainter extends CustomPainter {
  @override
  void paint(Canvas canvas, Size size) {
    final Paint paint = Paint()
      ..shader = LinearGradient(
        colors: [Colors.red, Colors.blue],
        begin: Alignment.topLeft,
        end: Alignment.bottomRight,
      ).createShader(Rect.fromLTWH(0, 0, size.width, size.height));

    final Path path = Path();
    final double sideLength = size.width / 2;
    final double centerX = size.width / 2;
    final double centerY = size.height / 2;
    final double radius = sideLength / 2 * 1.155;

    path.moveTo(centerX, centerY + radius);
    for (int i = 1; i <= 6; i++) {
      double angle = 2.0 * i * 3.1415926 / 6.0;
      double x = centerX + radius * cos(angle);
      double y = centerY + radius * sin(angle);
      path.lineTo(x, y);
    }
    path.close();

    canvas.drawPath(path, paint);
  }

  @override
  bool shouldRepaint(HexagonPainter oldDelegate) => false;
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('Gradient Hexagon'),
        ),
        body: Center(
          child: GradientHexagon(),
        ),
      ),
    );
  }
}