java实现输入心型

package com.mr.rocket;

import java.applet.Applet;

import java.awt.Color;

import java.awt.Graphics;

import java.awt.Image;

public class Test_2 extends Applet{

          int width , height ;

          Image image;                                                                     //缓冲区对象

          Graphics g1;

        public void init(){                                                   //Applet 初始化时调用

                 setBackground(Color. black);                                 //设置背景

                 this.setSize(350, 310);

                     

                 width = getSize(). width;                                    //获得窗口宽度

                 height = getSize(). height;

                 image = createImage( width, height);                  //创建图像对象

                 g1 = image.getGraphics();

          }

        public void paint(Graphics g){                                 //绘图方法

                 g1.clearRect(0, 0, width, height);

                 g1.setColor(Color. red);

                 for(int i = 0; i <= 90; i++)                                      

                             for(int j = 0; j  <= 90; j++){                                

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

                             int x = (int ) (r * Math.cos(Math. PI / 45 * j) * Math.sin(Math.PI / 45 * i) + width / 2);                                                               //为了在中间显示，加了偏移量

                             int y = (int ) (-r * Math.sin(Math. PI / 45 * j) + height / 4);

                              g1.fillOval(( int) x, (int )y, 2,2);           

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

          }

          }

        /**

        * @param args

        */

        public static void main(String[] args) {

               // TODO Auto-generated method stub

       }

}