使用Java绘制一个520爱心图案的示例代码

import javax.swing.*;
import java.awt.*;

public class HeartShape extends JFrame {

    public HeartShape() {
        setTitle("520爱心");
        setSize(800, 600);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setLocationRelativeTo(null);
        add(new HeartPanel());
    }

    public static void main(String[] args) {
        EventQueue.invokeLater(() -> {
            new HeartShape().setVisible(true);
        });
    }
}

class HeartPanel extends JPanel {
    @Override
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);
        Graphics2D g2d = (Graphics2D) g;
        
        // 设置抗锯齿
        g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        
        // 设置背景色
        setBackground(Color.BLACK);
        g2d.setColor(Color.RED);
        
        // 绘制爱心
        int width = getWidth();
        int height = getHeight();
        
        // 缩放和平移参数，使爱心居中显示
        double scale = Math.min(width, height) / 25.0;
        int translateX = width / 2;
        int translateY = height / 2;
        
        // 绘制爱心曲线
        int points = 1000;
        double[] xPoints = new double[points];
        double[] yPoints = new double[points];
        
        for (int i = 0; i < points; i++) {
            double t = 2 * Math.PI * i / points;
            // 心形参数方程
            double x = 16 * Math.pow(Math.sin(t), 3);
            double y = 13 * Math.cos(t) - 5 * Math.cos(2 * t) - 2 * Math.cos(3 * t) - Math.cos(4 * t);
            
            xPoints[i] = x * scale + translateX;
            yPoints[i] = -y * scale + translateY; // 反转Y轴
        }
        
        // 填充爱心
        int[] xIntPoints = new int[points];
        int[] yIntPoints = new int[points];
        for (int i = 0; i < points; i++) {
            xIntPoints[i] = (int) xPoints[i];
            yIntPoints[i] = (int) yPoints[i];
        }
        
        // 使用多边形填充
        g2d.fillPolygon(xIntPoints, yIntPoints, points);
        
        // 添加"520"文字
        g2d.setColor(Color.WHITE);
        g2d.setFont(new Font("微软雅黑", Font.BOLD, 48));
        String text = "520";
        FontMetrics fm = g2d.getFontMetrics();
        int textWidth = fm.stringWidth(text);
        int textHeight = fm.getHeight();
        
        g2d.drawString(text, translateX - textWidth / 2, translateY + textHeight / 2);
    }
}