applet1.java~433~

java实现的跑马灯 java实现的跑马灯

package hourse;

import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import javax.swing.*;
import java.lang.*;
import java.util.*;
import java.text.*;

class snow{
  int x;
  int y;
  int size;
  Random random = new Random();

void initiate(snow snowball)
  { snowball.x=Math.abs(random.nextInt()) % 800-200;
    snowball.y=Math.abs(random.nextInt()) % 1000-1000;
    snowball.size=1+Math.abs(random.nextInt()) %4;

  }

 void nextlocation(snow snowball,int mousex)
  {
   if(mousex>=250)
   snowball.x=snowball.x+(Math.abs(random.nextInt())%2)+1;
   if(mousex<250&&mousex>=150)
   snowball.x=snowball.x+(Math.abs(random.nextInt())%2)-1;
   if(mousex<150)
   snowball.x=snowball.x+(Math.abs(random.nextInt())%2)-2;
   snowball.y= snowball.y+1;
   if(snowball.y>340){snowball.x=Math.abs(random.nextInt()) % 800-200;snowball.y=Math.abs(random.nextInt()) % 400-400;
}
  }
}

public class Applet1 extends Applet implements Runnable{
  private boolean isStandalone = false;
  private Thread animate= null ;
  Image offScreenImage,pic,bike,fish;
  int x1=398,x2;
  Font f; String day="";
  int sec,min,hour,year;String strsec,strmin,strhour,stryear;
  Color color;  int a=255,b=255,c=0;
  int direct=0;
  int y0=260;
  int xcenter=195,ycenter=100,radius=90;
  int lastxsec=0,lastysec=0,lastxmin=0,lastymin=0,lastxhour=0,lastyhour=0;
  AudioClip sound;
  int count=0;
  Random random = new Random();
  snow[] snowball=new snow[200];//新建200个雪球
  snow snowtemp=new snow();
  int mousex=0;
  public String getParameter(String key, String def) {
    return isStandalone ? System.getProperty(key, def) :
      (getParameter(key) != null ? getParameter(key) : def);
  }


  public Applet1() {
  }

  public void init() {
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
     pic=getImage( getCodeBase(), "pic.jpg");
     bike=getImage( getCodeBase(), "bike.gif");
     fish=getImage( getCodeBase(), "fish.gif");
     sound=getAudioClip( getCodeBase(), "drip.au");

     for(int i=0;i<200;i++)
      {snowball[i]=new snow();
       snowtemp.initiate(snowball[i]);
      }

    if(animate == null || !animate.isAlive())//创建一个线程
       { animate = new Thread(this);
         animate.start();}

  }

  private void jbInit() throws Exception {
    this.addMouseMotionListener(new Applet1_this_mouseMotionAdapter(this));
    this.addKeyListener(new Applet1_this_keyAdapter(this));
    this.addMouseListener(new Applet1_this_mouseAdapter(this));
  }

  public String getAppletInfo() {
    return "Applet Information";
  }

  public String[][] getParameterInfo() {
    return null;
  }

  public void update(Graphics g) {
  paint(g);
}

public void paint(Graphics g) {
int xhour,yhour,xmin,ymin,xsec,ysec,sec,min,hour;
String strsec,strmin,strhour;
Font f;
Graphics2D g2d=(Graphics2D)g;
g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,RenderingHints.VALUE_TEXT_ANTIALIAS_ON);//抗锯齿

Graphics offScreen;//通过双缓存消除闪烁
offScreenImage=createImage(500,400);//创建屏外绘图区
offScreen=offScreenImage.getGraphics();//取得绘图环境
offScreen.drawImage(pic,0,0,this);

color = new Color(255, 255, 255);
offScreen.setColor(color);
for(int i=0;i<200;i++)
{snowtemp.nextlocation(snowball[i],mousex);
 offScreen.fillOval(snowball[i].x,snowball[i].y,snowball[i].size,snowball[i].size);}

color = new Color(255, 255, 255);
offScreen.setColor(color);
for(int j=0;j<60;j++)
{xmin=(int)(Math.cos(j*3.14f/30-3.14f/2)*radius+xcenter);
ymin=(int)(Math.sin(j*3.14f/30-3.14f/2)*radius+ycenter);
offScreen.fill3DRect(xmin-1,ymin-1,3,3,true);}

color = new Color(88, 120, 214);
offScreen.setColor(color);
for(int i=0;i<12;i++)
{xhour=(int)(Math.cos((i*30)*3.14f/180-3.14f/2)*radius+xcenter);
yhour=(int)(Math.sin((i*30)*3.14f/180-3.14f/2)*radius+ycenter);
offScreen.fill3DRect(xhour-2,yhour-2,7,7,true);}

Date date=new Date();
sec=date.getSeconds();
min=date.getMinutes();
hour=date.getHours();

xsec=(int)(Math.cos(sec*3.14f/30-3.14f/2)*(radius-5)+xcenter);
ysec=(int)(Math.sin(sec*3.14f/30-3.14f/2)*(radius-5)+ycenter);

xmin=(int)(Math.cos(min*3.14f/30-3.14f/2)*(radius-15)+xcenter);
ymin=(int)(Math.sin(min*3.14f/30-3.14f/2)*(radius-15)+ycenter);

xhour=(int)(Math.cos((hour*30+min/2)*3.14f/180-3.14f/2)*(radius-40)+xcenter);
yhour=(int)(Math.sin((hour*30+min/2)*3.14f/180-3.14f/2)*(radius-40)+ycenter);

double n,hxt,hyt,hxl,hyl,hxr,hyr,hxbl,hybl,hxbr,hybr;
n=Math.atan2((yhour-ycenter),(xhour-xcenter));

hxt=50;hyt=0;
hxl=1;hyl=-8.5;
hxbl=-7;hybl=-4;
hxbr=-7;hybr=4;
hxr=1;hyr=8.5;

Polygon filledPolygon=new Polygon();
filledPolygon.addPoint(
         (int)((hxt*Math.cos(n))-(hyt*Math.sin(n)))+xcenter,
         (int)((hxt*Math.sin(n))+(hyt*Math.cos(n)))+ycenter
         );
filledPolygon.addPoint(
         (int)((hxl*Math.cos(n))-(hyl*Math.sin(n)))+xcenter,
         (int)((hxl*Math.sin(n))+(hyl*Math.cos(n)))+ycenter
         );
filledPolygon.addPoint(
          (int)((hxbl*Math.cos(n))-(hybl*Math.sin(n)))+xcenter,
          (int)((hxbl*Math.sin(n))+(hybl*Math.cos(n)))+ycenter
          );
filledPolygon.addPoint(
            (int)((hxbr*Math.cos(n))-(hybr*Math.sin(n)))+xcenter,
            (int)((hxbr*Math.sin(n))+(hybr*Math.cos(n)))+ycenter
            );

filledPolygon.addPoint(
           (int)((hxr*Math.cos(n))-(hyr*Math.sin(n)))+xcenter,
           (int)((hxr*Math.sin(n))+(hyr*Math.cos(n)))+ycenter
           );


  color = new Color(12, 60,139);
  offScreen.setColor(color);
  offScreen.fillPolygon(filledPolygon);
  color = new Color(0,0,0);
  offScreen.setColor(color);
  offScreen.drawPolygon(filledPolygon);//画时针

  double m,mxt,myt,mxl,myl,mxr,myr,mxbl,mybl,mxbr,mybr;
  m=Math.atan2((ymin-ycenter),(xmin-xcenter));

  mxt=75;myt=0;
  mxl=8;myl=-6;
  mxbl=-8;mybl=-3;
  mxbr=-8;mybr=3;
  mxr=8;myr=6;

 Polygon minPolygon=new Polygon();
   minPolygon.addPoint(
           (int)((mxt*Math.cos(m))-(myt*Math.sin(m)))+xcenter,
           (int)((mxt*Math.sin(m))+(myt*Math.cos(m)))+ycenter
           );
   minPolygon.addPoint(
           (int)((mxl*Math.cos(m))-(myl*Math.sin(m)))+xcenter,
           (int)((mxl*Math.sin(m))+(myl*Math.cos(m)))+ycenter
           );
  minPolygon.addPoint(
            (int)((mxbl*Math.cos(m))-(mybl*Math.sin(m)))+xcenter,
            (int)((mxbl*Math.sin(m))+(mybl*Math.cos(m)))+ycenter
            );
  minPolygon.addPoint(
              (int)((mxbr*Math.cos(m))-(mybr*Math.sin(m)))+xcenter,
              (int)((mxbr*Math.sin(m))+(mybr*Math.cos(m)))+ycenter
              );

 minPolygon.addPoint(
             (int)((mxr*Math.cos(m))-(myr*Math.sin(m)))+xcenter,
             (int)((mxr*Math.sin(m))+(myr*Math.cos(m)))+ycenter
             );


color = new Color(0, 128,255);
offScreen.setColor(color);
offScreen.fillPolygon(minPolygon);
color = new Color(0, 81,162);
offScreen.setColor(color);
offScreen.drawPolygon(minPolygon); //画分针

  color = new Color(255, 0, 0);
  offScreen.setColor(color);
  offScreen.fillOval(xcenter-2,ycenter-2,4,4);
  offScreen.drawLine(xcenter,ycenter,xsec,ysec);//画秒针

        color = new Color(a, b,c);
        sec=date.getSeconds();
        min=date.getMinutes();
        hour=date.getHours();
        year= date.getYear()-100 ;
       if(year>=0)stryear="200"+year;
       else stryear="19"+(100+year);

        if(hour<10)strhour="0"+hour;
        else strhour=""+hour;
        if(min<10)strmin="0"+min;
        else strmin=""+min;
        if(sec<10)strsec="0"+sec;
        else strsec=""+sec;

        switch(date.getDay())
        {case 0:day="日";break;
         case 1:day="一";break;
         case 2:day="二";break;
         case 3:day="三";break;
         case 4:day="四";break;
         case 5:day="五";break;
         case 6:day="六";break;
        }

        f=new Font("星期"+day+" "+(date.getMonth()+1)+"月"+date.getDate()+"日"+" "+stryear+"年  "+strhour+":"+strmin+":"+strsec,Font.BOLD,22);

        offScreen.setFont(f);offScreen.setColor(color);
if(direct==0)
      {  {if(x1<0){offScreen.drawImage(fish,x1-15,y0-55,this);
         offScreen.drawString("星期"+day+" "+(date.getMonth()+1)+"月"+date.getDate()+"日"+" "+stryear+"年  "+strhour+":"+strmin+":"+strsec,x1,y0);
         x2=x1+398;
         offScreen.drawImage(fish,x2-15,y0-55,this);
         offScreen.drawString("星期"+day+" "+(date.getMonth()+1)+"月"+date.getDate()+"日"+" "+stryear+"年  "+strhour+":"+strmin+":"+strsec,x2,y0);
         }
         else
          { offScreen.drawImage(fish,x1-15,y0-55,this);
            offScreen.drawString("星期"+day+" "+(date.getMonth()+1)+"月"+date.getDate()+"日"+" "+stryear+"年  "+strhour+":"+strmin+":"+strsec,x1,y0);}
         if(x2<0){x1=x2;x2=x1+398;}
         x1=x1-1;

  }}
if(direct==1)
{ {if(x1+398>398){offScreen.drawImage(bike,x1+100,y0+20,this);
         offScreen.drawString("星期"+day+" "+(date.getMonth()+1)+"月"+date.getDate()+"日"+" "+stryear+"年  "+strhour+":"+strmin+":"+strsec,x1,y0);
         x2=x1-398;
         offScreen.drawImage(bike,x2+100,y0+20,this);
         offScreen.drawString("星期"+day+" "+(date.getMonth()+1)+"月"+date.getDate()+"日"+" "+stryear+"年  "+strhour+":"+strmin+":"+strsec,x2,y0);
         }
         else
          { offScreen.drawImage(bike,x1+100,y0+20,this);
            offScreen.drawString("星期"+day+" "+(date.getMonth()+1)+"月"+date.getDate()+"日"+" "+stryear+"年  "+strhour+":"+strmin+":"+strsec,x1,y0);}
         if(x2+398>398){x1=x2;x2=x1-398;}
         x1=x1+1;}
}
  g2d.drawImage(offScreenImage,0,0,this);

}
  public void run()
  { while(animate!=null)
   {try{Thread.sleep(50);}
    catch(InterruptedException e){}
    repaint();}
}

  void this_mouseClicked(MouseEvent e) {
   int x,y;
   y=e.getY();x=e.getX();
   if(y>0&&y<=195)
   {a=Math.abs(random.nextInt()) % 256;
   b=Math.abs(random.nextInt()) % 256;
   c=Math.abs(random.nextInt()) % 256;}
   if(y>195)
    direct=1-direct;}

  void this_keyPressed(KeyEvent e) {
    int j;
    j = e.getKeyCode();
    if(j==e.VK_SPACE){a=255;b=255;c=0;direct=0;}
    if(j==e.VK_LEFT){direct=0;}
    if(j==e.VK_RIGHT){direct=1;}
    if(j==e.VK_NUMPAD1){a=255;b=0;c=0;}
    if(j==e.VK_NUMPAD2){a=0;b=0;c=255;}
    if(j==e.VK_NUMPAD3){a=0;b=204;c=0;}
    if(j==e.VK_NUMPAD9){a=255;b=255;c=0;}
    if(j==e.VK_NUMPAD5){a=255;b=128;c=255;}
    if(j==e.VK_NUMPAD6){a=255;b=128;c=64;}
    if(j==e.VK_NUMPAD7){a=192;b=192;c=192;}
    if(j==e.VK_NUMPAD8){a=0;b=0;c=0;}
    if(j==e.VK_NUMPAD4){a=255;b=255;c=255;}
  }

  void this_mouseMoved(MouseEvent e) {
  mousex=e.getX();}
}

class Applet1_this_mouseAdapter extends java.awt.event.MouseAdapter {
  Applet1 adaptee;

  Applet1_this_mouseAdapter(Applet1 adaptee) {
    this.adaptee = adaptee;
  }
  public void mouseClicked(MouseEvent e) {
    adaptee.this_mouseClicked(e);
  }
}

class Applet1_this_keyAdapter extends java.awt.event.KeyAdapter {
  Applet1 adaptee;

  Applet1_this_keyAdapter(Applet1 adaptee) {
    this.adaptee = adaptee;
  }
  public void keyPressed(KeyEvent e) {
    adaptee.this_keyPressed(e);
  }
}

class Applet1_this_mouseMotionAdapter extends java.awt.event.MouseMotionAdapter {
  Applet1 adaptee;

  Applet1_this_mouseMotionAdapter(Applet1 adaptee) {
    this.adaptee = adaptee;
  }
  public void mouseMoved(MouseEvent e) {
    adaptee.this_mouseMoved(e);
  }
}