开发学院软件开发Java 类似卫星扫描效果 阅读

类似卫星扫描效果

 2007-12-23 12:38:00 来源:WEB开发网   
核心提示:/*Wireless java 2nd edition Jonathan KnudsenPublisher: APRessISBN: 1590590775 */import javax.microedition.lcdui.*;import javax.microedition.lcdui.game.*;import

/*
Wireless java 2nd edition
Jonathan Knudsen
Publisher: APRess
ISBN: 1590590775
*/

import javax.microedition.lcdui.*;
import javax.microedition.lcdui.game.*;
import javax.microedition.midlet.*;

public class SweepGame extends MIDlet {
  public void startApp() {
   final SweepGameCanvas sweeper = new SweepGameCanvas();
   sweeper.start();
  
   sweeper.addCommand(new Command("Exit", Command.EXIT, 0));
   sweeper.setCommandListener(new CommandListener() {
    public void commandAction(Command c, Displayable s) {
     sweeper.stop();
     notifyDestroyed();
    }
   });
  
   Display.getDisplay(this).setCurrent(sweeper);
  }
 
  public void pauseApp() {}

  public void destroyApp(boolean unconditional) {}
}

class SweepGameCanvas extends GameCanvas implements Runnable {
  private boolean mTrUCking;
  private int mTheta;
  private int mBorder;
  private int mDelay;
 
  public SweepGameCanvas() {
   super(true);
   mTheta = 0;
   mBorder = 10;
   mDelay = 50;
  }
 
  public void start() {
   mTrucking = true;
   Thread t = new Thread(this);
   t.start();
  }
 
  public void stop() {
   mTrucking = false;
  }
  
  public void render(Graphics g) {
   int width = getWidth();
   int height = getHeight();
  
   // Clear the Canvas.
   g.setGrayScale(255);
   g.fillRect(0, 0, width - 1, height - 1);
  
   int x = mBorder;
   int y = mBorder;
   int w = width - mBorder * 2;
   int h = height - mBorder * 2;
   for (int i = 0; i < 8; i++) {
    g.setGrayScale((8 - i) * 32 - 16);
    g.fillArc(x, y, w, h, mTheta + i * 10, 10);
    g.fillArc(x, y, w, h, (mTheta + 180) % 360 + i * 10, 10);
   }
  }
 
  public void run() {
   Graphics g = getGraphics();
   while (mTrucking) {
    mTheta = (mTheta + 1) % 360;
    render(g);
    flushGraphics();
    try { Thread.sleep(mDelay); }
    catch (InterruptedException ie) {}
   }
  }
}类似卫星扫描效果 类似卫星扫描效果


(出处:http://www.cncms.com)


Tags:类似 卫星 扫描

编辑录入:爽爽 [复制链接] [打 印]
[]
  • 好
  • 好的评价 如果觉得好,就请您
      0%(0)
  • 差
  • 差的评价 如果觉得差,就请您
      0%(0)
赞助商链接