animotor.java

一个用JAVA编写的能够通过加载图形产生动画的简易程序

import java.applet.*;
import java.awt.*;
import java.util.Vector ;
public class Animotor extends Applet implements Runnable 
{
	private Vector images=new Vector();
	private int imgCount;
	private int currentImg=0;
	private Thread thisThread;
	private int meWidth,meHeight;
	private Image imgoffScreen;
	public void init()
	{
		imgCount=Integer.parseInt(getParameter("ImgCount"));
		meWidth=getSize().width ;
		meHeight=getSize().height ;
		for(int i=1;i<=imgCount;i++)
		{
			
			images.addElement(getImage(getCodeBase(),"img/img" +i+".jpg"));
			
		}
		imgoffScreen=createImage(getSize().width,getSize().height);	
	}
	

	public void paint(Graphics g)
	{
		g.setColor(Color.white);
		g.fillRect(0,0,meWidth,meHeight);
		g.drawImage((Image)images.elementAt(currentImg++),0,0,this);
		currentImg %=imgCount;
	}
	

	public void start()
	{
		thisThread=new Thread(this);
		thisThread.start ();
	}
	

	public void stop()
	{
		thisThread.stop();
	}

	public void run()
	{
		while(true)
		{
			repaint();
			try
			{
				Thread.sleep(100);
			}
			catch(Exception e){}
		}
	}
	//下面使用了双缓冲技术，如果不使用双缓冲
	//即使从内存中读取图形依然还会闪烁

	public void update(Graphics g)
	{
		Graphics offg=imgoffScreen.getGraphics();
		offg.setColor(getBackground());
		offg.fillRect(0,0,getSize().width,getSize().height);
		offg.setColor(g.getColor());
		paint(offg);
		g.drawImage(imgoffScreen,0,0,this);
		
	}


}