java实现绘制跳动的桃心(附完整源码)

下面是Java实现绘制跳动的桃心的完整源码：

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

public class BeatingHeart extends JPanel {
    private int time = 0;

    public BeatingHeart() {
        setPreferredSize(new Dimension(500, 500));
        setBackground(Color.white);
        Timer timer = new Timer(50, e -> {
            time++;
            repaint();
        });
        timer.start();
    }

    @Override
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);

        Graphics2D g2d = (Graphics2D) g.create();
        g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);

        int centerX = getWidth() / 2;
        int centerY = getHeight() / 2;
        int size = Math.min(getWidth(), getHeight()) / 4;

        double angle = time * 0.04;
        double x = size * (16 * Math.pow(Math.sin(angle), 3));
        double y = -size * (13 * Math.cos(angle) - 5 * Math.cos(2 * angle) - 2 * Math.cos(3 * angle) - Math.cos(4 * angle));

        GeneralPath heart = new GeneralPath();
        heart.moveTo(centerX + x, centerY + y);
        heart.curveTo(centerX + x, centerY + y - size / 2, centerX + x - size, centerY + y - size / 2, centerX + x - size, centerY + y);
        heart.curveTo(centerX + x - size, centerY + y + size / 2, centerX + x, centerY + y + size / 8, centerX + x, centerY + y + size / 2);
        heart.closePath();

        g2d.setColor(Color.red);
        g2d.fill(heart);

        g2d.dispose();
    }

    public static void main(String[] args) {
        JFrame frame = new JFrame("Beating Heart");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.getContentPane().add(new BeatingHeart());
        frame.pack();
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);
    }
}

使用方法：

直接运行main方法即可看到跳动的桃心。

这里使用了Java2D图形库，通过绘制GeneralPath来实现桃心的绘制。桃心的形状采用了三次贝塞尔曲线来构造，其中心位置和大小随时间变化，实现了桃心跳动的效果。