javatn打心形 用java编个爱心图案

package Demo; 

import java.awt.Color; 

import java.awt.Graphics; 

import java.awt.Image; 

import java.awt.Toolkit; 

import javax.swing.JFrame; 

@SuppressWarnings("serial") 

class Cardioid extends JFrame 

    //定义窗口大小 

    private static final int WIDTH = 480; 

    private static final int HEIGHT = 600; 

    //获取屏幕大小 

    private static int WINDOW_WIDTH = Toolkit.getDefaultToolkit().getScreenSize().width; 

    private static int WINDOW_HEIGHT  = Toolkit.getDefaultToolkit().getScreenSize().height; 

    //构造函数 

    public Cardioid(){ 

        //设置窗口标题 

        super("❤形线"); 

        //设置背景色 

        this.setBackground(Color.BLACK); 

        //设置窗口位置 

        this.setLocation((WINDOW_WIDTH - WIDTH)/2, (WINDOW_HEIGHT - HEIGHT)/2); 

        //设置窗口大小 

        this.setSize(WIDTH, HEIGHT); 

        //设置窗口布局 

this.setLayout(getLayout()); 

        //设置窗口可见 

        this.setVisible(true); 

        //设置窗口默认关闭方式 

        this.setDefaultCloseOperation(DISPOSE_ON_CLOSE); 

    public void paint(Graphics g){ 

        double  x,y,r;          //横纵坐标及半径 

        Image image = this.createImage(WIDTH, HEIGHT); 

        Graphics pic = image.getGraphics(); 

        //绘制图形 

        for (int i = 0; i < 100; i++) 

            for (int j = 0; j < 100; j++) 

                r = Math.PI / 45 + Math.PI / 45 * i * (1 - Math.sin(Math.PI / 45 * j)) * 18;  

                x = r * Math.cos(Math.PI / 45 * j) * Math.sin(Math.PI / 45 * i)  + WIDTH / 2; 

                y = -r*Math.sin(Math.PI / 45 * j) + HEIGHT / 2; 

                pic.setColor(Color.MAGENTA); 

                pic.fillOval((int)x, (int)y, 2, 2); 

            //生成图片 

     g.drawImage(image,0,0,this); 

public class CardioidDemo http://www.huiyi8.com/gundongdaima/ 

    public static void main(String[] args){

 new Cardioid();