让蒲公英飘动起来

晚上回到宿舍，突然想起，我可以把昨天晚上的代码修改一下，来让我的蒲公英达到飘动的效果，然后就把代码乱修改了一番，代码如下，但是飘动的效果得在运行的时候才能看出来，具体代码如下：

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics2D;
import java.awt.Toolkit;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;import javax.swing.JFrame;
import javax.swing.JPanel;/*** 画出一颗动态的蒲公英。。。。(画出蒲公英的改进版，使得蒲公英可以飘动)* @author LONG**/
public class TheTree extends JFrame {private static final long serialVersionUID = 1L;private Dimension di = null;private Graphics2D gr = null;private int x,y;		//蒲公英初始飘动的点private JPanel jp = null;		//将面板声明为全局变量private int count = 0;		//用来记录次数/*** 程序主入口* @param args*/public static void main(String[] args){TheTree tt = new TheTree();tt.showFrame();}/*** 展示窗体，将窗体显示出来*/public void showFrame(){this.setTitle("The Tree");Toolkit tl = Toolkit.getDefaultToolkit();di = tl.getScreenSize();this.setSize(di.width,di.height);this.setDefaultCloseOperation(3);jp = new JPanel();jp.setPreferredSize(new Dimension(di.width,di.height));x = di.width;			//初始化坐标值，使其最大y = di.height;			//初始化坐标值，使其最大this.add(jp);this.setResizable(false);jp.setBackground(Color.BLACK);this.setVisible(true);gr = (Graphics2D) jp.getGraphics();//给界面添加监听器，判断执行次数jp.addMouseListener(new MouseAdapter(){public void mouseReleased(MouseEvent e){draw(e);}});	}/*** 初始进行选择，来判断是初次绘画还是改变后* @param e		传入点击事件*/public void draw(MouseEvent e){while(y > 0){if(count == 0){x = e.getX();	//自己选择蒲公英生长的位置y = e.getY();}else{y -= 5;		//非初次的话，那么进行改变位置，传入参数x += 6;}		init(x,y);		//执行下面的函数}}//用来初始化蒲公英的位置，达到飘动的效果public void init(int xx,int yy){BasicStroke bs = new BasicStroke(4);gr.setStroke(bs);gr.setColor(Color.GREEN);gr.drawLine(xx, yy, xx, yy - 400);	//用来先画出蒲公英的主干doSomething(xx,yy - 400,150);}/***那我们来画蒲公英吧* * @param x1	起始点x坐标* @param y1	起始点y坐标* @param h		长度h*/public void doSomething(int x1, int y1, int h){//使循环将所有的蒲公英分支画出来for(int i = 0; i < 90; i++){double angle = i * 2 * Math.PI/90;		//得到等分的九十个角int x2 = x1 + (int)(Math.sin(angle) * h);int y2 = y1 - (int)(Math.cos(angle) * h);BasicStroke bs_next = new BasicStroke();gr.setStroke(bs_next);gr.setColor(Color.gray);gr.drawLine(x1, y1, x2, y2);gr.setColor(Color.WHITE);gr.fillOval(x2 - 1, y2 - 1, 5, 5);}try {Thread.sleep(120);} catch (InterruptedException e) {e.printStackTrace();}//再次将蒲公英画黑,重复上面的画的动作，只不过是将所有的颜色都改为黑色的，已达到飘动的效果BasicStroke bs = new BasicStroke(4);gr.setStroke(bs);gr.setColor(Color.BLACK);gr.drawLine(x1, y1 + 400, x1, y1);	for(int i = 0; i < 90; i++){double angle = i * 2 * Math.PI/90;		int x2 = x1 + (int)(Math.sin(angle) * h);int y2 = y1 - (int)(Math.cos(angle) * h);BasicStroke bs_next = new BasicStroke();gr.setStroke(bs_next);gr.setColor(Color.BLACK);gr.drawLine(x1, y1, x2, y2);gr.setColor(Color.BLACK);gr.fillOval(x2 - 1, y2 - 1, 5, 5);}count++;}
}