car.java

来自「java写的一交通导航程序点击任意两站点就可以以可视化的方式将转车次数最少的乘车」· Java 代码 · 共 45 行

import java.awt.*;
public class car extends Frame implements Runnable{
	Image pic;
	MediaTracker track=new MediaTracker(this);
	double d=0.1,scale=0;
	int w,h;
	Graphics2D g2=null;
	public car(){
		pic=Toolkit.getDefaultToolkit().getImage("motuo.gif");
		track.addImage(pic,0);
		try{
			track.waitForAll();
		}catch(Exception e){}
		w=pic.getWidth(null);
		h=pic.getHeight(null);
		new Thread(this).start();
	}
	public void paint(Graphics g){
		g2=(Graphics2D)g;
		g2.translate(100,100);
		g2.rotate(scale);
		g2.drawImage(pic,-w/2,-h/2,this);
		//g2.rotate(-scale);
		//g2.translate(-100,-100);
		
	}
	public Dimension getPreferredSize(){
		return new Dimension(400,400);
	}
	public void run(){
		while(true){
			scale=scale+d;
			if(scale>Math.PI*2) scale=scale-Math.PI*2;
			repaint();
			try{Thread.sleep(200);}catch(Exception e){}	
		}
		
	}
	public static void main(String [] arg){
		car f=new car();
		f.setLocation(100,100);
		f.pack();
		f.show();
	} 
}