如何用java代码画一颗心？只需一分钟便教你画好

java代码编写出一颗心

package com.zhouqing.demo;

import java.awt.Color;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.Toolkit;

import javax.swing.JFrame;

public class Cardioid extends JFrame{
	//获取屏幕大小
		private static final int WIDTH = 500;
		private static final int HEIGHT = 500;   
	 
		private static int WINDOW_WIDTH = Toolkit.getDefaultToolkit().getScreenSize().width;
		private static int WINDOW_HEIGHT = Toolkit.getDefaultToolkit().getScreenSize().height;
		
		public Cardioid(){
			super("I love you");//设置窗口标题
			this.setBackground(Color.BLACK);
			this.setLocation((WINDOW_WIDTH-WIDTH)/2,(WINDOW_HEIGHT-HEIGHT)/2);//设置窗口位置
			this.setSize(WIDTH, HEIGHT);//设置窗口大小
			this.setLayout(getLayout());//设置窗口布局
			this.setVisible(true);//设置窗口可见
			this.setDefaultCloseOperation(DISPOSE_ON_CLOSE);//设置窗口默认关闭方式
		}
		
		public void paint(Graphics g){
			double x,y,r;//横纵坐标以及半径
			Image image = this.createImage(WIDTH, HEIGHT);
			Graphics pic = image.getGraphics();
			for (int i = -2; i < 90; i++) {
				for (int j = -2; j < 90; 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/3;
					pic.setColor(Color.MAGENTA);
					pic.fillOval((int)x, (int)y, 2, 2);
				}
				g.drawImage(image,0,0,this);//生成图片
			}
		}
		
		
		public static void main(String[] args) {
			new Cardioid();
		}


}