leaf.java

关于细胞自动机的例子

package leaf;

import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import java.awt.image.*;
/**
 * Title:        leaf
 * Description:
 * Copyright:    Copyright (c) 2003
 * Company:      http://agents.yeah.net
 * @author [e-mail]
 * @version 1.0
 */

public class leaf extends Applet implements Runnable{
  Thread    runner;//为类定义一个线程，在start中启用
  int width=300,heightall=400;
  int height=300;
  double scale[];
  int offsetX[];//0时为初始的偏移量，1时为经过移动后的偏移量
  int offsetY[];
  boolean running=false;//开始时运行为暂停
  int delay=0;//cpu延迟时间
  double u=0;//借用
  double x=0;//画点的x坐标
  double y=0;//画点的y坐标
  double rule[][];//规则数组p[6][rules]，其中rules为规则数，每个规则有6个参数，由用户自己设定
  double p[];//规则的概率数组p[rules]，由用户自己设定
  double pp[];//根据p[]算出每条规则应用的范围，即随机点落在哪里时用该条规则，其中pp[0]=0;
  int ruleNumber;//rules得个数

  boolean change=true;//true为平移，false为缩放
  boolean startChange=true;
  int getX[];
  int getY[];

  int count=0;//叠代的次数，可以自己设定
  boolean started=true;
  Graphics gr;

  Color c=new Color(100, 210, 100);//画笔颜色
  Color bg=new Color(0,0,0);//背景颜色

  boolean isStandalone = false;
  Button btnStart = new Button();
  Button btnSet = new Button();
  Button btnAbout = new Button();
  Choice choice1 = new Choice();
  Label label1 = new Label();
  Choice choice2 = new Choice();
  Button reset = new Button();
  Label label3 = new Label();
  Label label2 = new Label();
  /**Get a parameter value*/
  public String getParameter(String key, String def) {
    return isStandalone ? System.getProperty(key, def) :
      (getParameter(key) != null ? getParameter(key) : def);
  }

  /**Construct the applet*/
  public leaf() {
  }
  /**Initialize the applet*/
  public void init() {
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  /**Component initialization*/
  private void jbInit() throws Exception {
    //int[] pixels=new int[width*height];
    resize(width,heightall);//重置窗口大小
//    setCursor(MOVE_CURSOR);
    getX = new int[2];
    getY = new int[2];
    offsetX = new int[2];
    offsetY = new int[2];
    scale = new double[2];
    scale[0]=1;
    offsetX[0]=0;
    offsetY[0]=0;
    offsetX[1]=0;
    offsetY[1]=0;

    setLayout(new BorderLayout());//定义对齐方式
    Panel pan = new Panel();//定义一个面板
    pan.setLayout(new BorderLayout());
    Panel panMain = new Panel();
    panMain.setLayout(new FlowLayout(FlowLayout.CENTER, 5, 5));
    Panel panMove = new Panel();
    panMove.setLayout(new FlowLayout(FlowLayout.CENTER,5,5));
    this.setBackground(Color.black);
    this.addMouseListener(new java.awt.event.MouseAdapter() {
      public void mousePressed(MouseEvent e) {
        this_mousePressed(e);
      }
      public void mouseReleased(MouseEvent e) {
        this_mouseReleased(e);
      }
    });
    pan.setBackground(Color.lightGray);
    panMain.setBackground(Color.lightGray);
    panMove.setBackground(Color.lightGray);
    btnStart.setLabel("开始");
    btnStart.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        btnStart_actionPerformed(e);
      }
    });
    btnSet.setLabel("设置");
    btnSet.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        btnSet_actionPerformed(e);
      }
    });
    btnAbout.setLabel("说明");
    btnAbout.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        btnAbout_actionPerformed(e);
      }
    });

    choice1.addItem("叶子");
    choice1.addItem("山");
    choice1.addItem("Sierpinski三角");
    choice1.addItem("枫叶");
    choice1.addItem("怪物");
    choice1.addItem("竹叶");
    choice1.addItem("金字塔");
//    choice1.addItem("枫叶");
    choice2.addItem("平移-鼠标移动可平移");
    choice2.addItem("缩放-鼠标从左向右放大,反之缩小");


    rule = new double [6][6];
    p = new double [6];
    pp = new double [7];

   for (int i=0;i<6;i++){
      for(int j=0;j<ruleNumber;j++){
        rule[i][j]=0;
      }
    }
      ruleNumber=4;
      scale[0]=30;
      scale[1]=30;
      rule[4][0]=0.16;
      rule[0][1]=0.85; rule[1][1]=0.04; rule[3][1]=-0.04; rule[4][1]=0.85; rule[5][1]=1.6;
      rule[0][2]=0.2; rule[1][2]=-0.26; rule[3][2]=0.23; rule[4][2]=0.22; rule[5][2]=1.6;
      rule[0][3]=-0.15; rule[1][3]=0.28; rule[3][3]=0.26; rule[4][3]=0.24; rule[5][3]=0.44;
      //p[0]=0.25; p[1]=0.25; p[2]=0.25; p[3]=0.25;
      p[0]=0.01; p[1]=0.85; p[2]=0.07; p[3]=0.07;
    pp[0]=0;
    for (int i=1;i<ruleNumber+1;i++){
      pp[i]=pp[i-1]+p[i-1];
    }


    choice1.addItemListener(new java.awt.event.ItemListener() {
      public void itemStateChanged(ItemEvent e) {
        choice1_itemStateChanged(e);
      }
    });
    label1.setText("图像");
    choice2.addItemListener(new java.awt.event.ItemListener() {
      public void itemStateChanged(ItemEvent e) {
        choice2_itemStateChanged(e);
      }
    });
    reset.setLabel("重置");
    reset.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        reset_actionPerformed(e);
      }
    });
    label2.setForeground(Color.blue);
    label2.setText("制作:keatskk");
    add("South",pan);

    pan.add("North",panMain);
    panMain.add(btnStart);
    panMain.add(btnSet);
    panMain.add(btnAbout);
    panMain.add(choice1);
    panMain.add(label2, null);
    pan.add("South",panMove);
    panMove.add(label1, null);
    panMove.add(choice2, null);
    panMove.add(reset, null);
//    reinit();//initial一次










    //img.flush();

    //gr=this.getGraphics();
//    gr.clearRect(0,0,width,height);
//    gr.setColor(Color.black);
//    gr.fillRect(0,0,width,height);
    //reinit();
  }

  public void reinit(){
    started=true;
    x=0;y=0;
    pp[0]=0;
    for (int i=1;i<ruleNumber+1;i++){
      pp[i]=pp[i-1]+p[i-1];
    }
    //running=true;
    repaint();

  }
  public void run()   {
  while (true) {
    if (running && count<200000) {
            /*产生一个介于1到100之间的随机数*/
      double E = Math.random();
      u=0;
      for(int i=0;i<ruleNumber;i++){
        if(E >= pp[i] && E< pp[i+1]){
          u=rule[0][i]*x+rule[1][i]*y+rule[2][i];
          y=rule[3][i]*x+rule[4][i]*y+rule[5][i];
          x=u;
          break;
        }
      }
      //画点
      if(startChange==false && change==true){
        offsetX[1]=offsetX[1]+(getX[1]-getX[0]);
        offsetY[1]=offsetY[1]+(getY[1]-getY[0]);
        startChange=true;
      }
      else if(startChange==false && change==false){
        double length;
        length=Math.sqrt((getX[1]-getX[0])*(getX[1]-getX[0])+(getY[1]-getY[0])*(getY[1]-getY[0]));
        length=length*0.1;
        if(getX[1]-getX[0]>0){
          scale[1]=scale[1]*length;
        }
        else if (getX[1]-getX[0]<0){
          scale[1]=scale[1]/length;
        }
        startChange=true;
      }
      gr=this.getGraphics();
      gr.setColor(c);
      gr.fillRect(width/2+(int)(scale[1]*x)+offsetX[1],height+10-(int)(scale[1]*y)+offsetY[1],1,1);
      showStatus("Count:"+(count++));
       try{Thread.sleep(delay);}catch(InterruptedException e){};//每隔delay秒cpu运算一次，也就是做一次decision
    }
    else{try{Thread.sleep(500);}catch(InterruptedException e){};}
  }
}

  /**Start the applet*/
  public void start() {
    if(runner==null){runner=new Thread(this);runner.start();}//启用线程
  }
  /**Stop the applet*/
  public void stop() {
    if(runner!=null){
    runner.stop();
    runner = null;
    }
  }
  /**Destroy the applet*/
  public void destroy() {
    if(runner!=null){
    runner.stop();
    runner = null;
    }
  }
  /**Get Applet information*/
  public String getAppletInfo() {
    return "Applet Information";
  }
  /**Get parameter info*/
  public String[][] getParameterInfo() {
    return null;
  }
  /**Main method*/
  public static void main(String[] args) {
    leaf applet = new leaf();
    applet.isStandalone = true;
    Frame frame;
    frame = new Frame() {
      protected void processWindowEvent(WindowEvent e) {
        super.processWindowEvent(e);
        if (e.getID() == WindowEvent.WINDOW_CLOSING) {
          System.exit(0);
        }
      }
      public synchronized void setTitle(String title) {
        super.setTitle(title);
        enableEvents(AWTEvent.WINDOW_EVENT_MASK);
      }
    };
    frame.setTitle("Applet Frame");
    frame.add(applet, BorderLayout.CENTER);
    applet.init();
    applet.start();
    frame.setSize(300,370);
    Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
    frame.setLocation((d.width - frame.getSize().width) / 2, (d.height - frame.getSize().height) / 2);
    frame.setVisible(true);
  }

  public void paint (Graphics g) {
    if (started=true){
      g.clearRect(0,0,300,300);
      g.setColor(bg);
      g.fillRect(0,0,300,300);
      count=0;
      started=false;
    }
    else{count=0;};
      /*将指定点画为绿色*/
//    g=this.getGraphics();
//    g.setColor();
//    g.fillRect(150+(int)(30*x),310-(int)(30*y),1,1);

      //putpixel(300+(int)(45*x),465-(int)(45*y),GREEN);
  }

  void btnStart_actionPerformed(ActionEvent e) {
    if(btnStart.getLabel()=="开始"){
      running=true;
      btnStart.setLabel("暂停");
    }
    else if(btnStart.getLabel()=="暂停"){
      running=false;
      btnStart.setLabel("开始");
    }
  }

  void btnSet_actionPerformed(ActionEvent e) {
          running=false;
          IFSControl ctl=new IFSControl(this);
          ctl.setSize(750,250);
          ctl.show();
  }

  void btnAbout_actionPerformed(ActionEvent e) {
    running=false;
    IFSAbout cml=new IFSAbout(this);
    cml.setSize(500,400);
    cml.show();
  }

  void choice1_itemStateChanged(ItemEvent e) {
    int k=choice1.getSelectedIndex();
    //count=-50;
        //给定参数（试验）
    for (int i=0;i<6;i++){
      for(int j=0;j<ruleNumber;j++){
        rule[i][j]=0;
      }
      p[i]=0;

    }
    if(k==0){
      ruleNumber=4;
      scale[0]=30;
      scale[1]=30;
      offsetX[0]=0;offsetY[0]=0;
      offsetX[1]=0;offsetY[1]=0;
      rule[4][0]=0.16;
      rule[0][1]=0.85; rule[1][1]=0.04; rule[3][1]=-0.04; rule[4][1]=0.85; rule[5][1]=1.6;
      rule[0][2]=0.2; rule[1][2]=-0.26; rule[3][2]=0.23; rule[4][2]=0.22; rule[5][2]=1.6;
      rule[0][3]=-0.15; rule[1][3]=0.28; rule[3][3]=0.26; rule[4][3]=0.24; rule[5][3]=0.44;
      //p[0]=0.25; p[1]=0.25; p[2]=0.25; p[3]=0.25;
      p[0]=0.01; p[1]=0.85; p[2]=0.07; p[3]=0.07;
      //计算pp[]
      //参数给定结束
    }
  if(k==1){
      ruleNumber=4;
      scale[0]=75;
      scale[1]=75;
      offsetX[0]=-100;offsetY[0]=-30;
      offsetX[1]=-100;offsetY[1]=-30;
      rule[0][0]=0.5; rule[1][0]=0; rule[2][0]=0;
      rule[3][0]=0; rule[4][0]=0.5;rule[5][0]=0;
      rule[0][1]=0.5;  rule[1][1]=0;  rule[2][1]=2;
      rule[3][1]=0;  rule[4][1]=0.5; rule[5][1]=0;
      rule[0][2]=-0.4;  rule[1][2]=0;  rule[2][2]=0;
      //rule[3][2]=1;  rule[4][2]=0.4; rule[5][2]=1;
      rule[3][2]=-0.4;  rule[4][2]=0.4; rule[5][2]=1;
      rule[0][3]=-0.5;  rule[1][3]=0;  rule[2][3]=2;
      rule[3][3]=0;  rule[4][3]=0.5; rule[5][3]=1;
      p[0]=0.25;p[1]=0.25;p[2]=0.25;p[3]=0.25;
  }
  if(k==2){
      ruleNumber=3;
      scale[0]=1;
      scale[1]=2.9;
      offsetX[0]=-150;offsetY[0]=15;
      offsetX[1]=-150;offsetY[1]=15;
      rule[0][0]=0.5; rule[1][0]=0; rule[2][0]=1;
      rule[3][0]=0; rule[4][0]=0.5;rule[5][0]=1;
      rule[0][1]=0.5;  rule[1][1]=0;  rule[2][1]=50;
      rule[3][1]=0;  rule[4][1]=0.5; rule[5][1]=1;
      rule[0][2]=0.5;  rule[1][2]=0;  rule[2][2]=50;
      //rule[3][2]=1;  rule[4][2]=0.4; rule[5][2]=1;
      rule[3][2]=0;  rule[4][2]=0.5; rule[5][2]=50;
      p[0]=0.33;p[1]=0.33;p[2]=0.34;
    }
  if(k==3){
      ruleNumber=4;
      scale[0]=410;
      scale[1]=410;
      offsetX[0]=-180;offsetY[0]=100;
      offsetX[1]=-180;offsetY[1]=100;
      rule[0][0]=0.6; rule[1][0]=0; rule[2][0]=0.18;
      rule[3][0]=0; rule[4][0]=0.6;rule[5][0]=0.36;
      rule[0][1]=0.6;  rule[1][1]=0;  rule[2][1]=0.18;
      rule[3][1]=0;  rule[4][1]=0.6; rule[5][1]=0.12;
      rule[0][2]=0.4;  rule[1][2]=0.3;  rule[2][2]=0.27;
      //rule[3][2]=1;  rule[4][2]=0.4; rule[5][2]=1;
      rule[3][2]=-0.3;  rule[4][2]=0.4; rule[5][2]=0.36;
      rule[0][3]=0.4;  rule[1][3]=-0.3;  rule[2][3]=0.27;
      rule[3][3]=0.3;  rule[4][3]=0.4; rule[5][3]=0.09;
      p[0]=0.25;p[1]=0.25;p[2]=0.25;p[3]=0.25;
  }
if(k==4){
      ruleNumber=2;
      scale[0]=6;
      scale[1]=6;
      offsetX[0]=0;offsetY[0]=-100;
      offsetX[1]=0;offsetY[1]=-100;
      rule[0][0]=0.8; rule[1][0]=0.3; rule[2][0]=-0.2;
      rule[3][0]=0.9; rule[4][0]=-0.9;rule[5][0]=-0.1;
      rule[0][1]=0.09;  rule[1][1]=0.52;  rule[2][1]=-0.46;
      rule[3][1]=-0.38;  rule[4][1]=0.79; rule[5][1]=8.10;
      //rule[0][2]=0.4;  rule[1][2]=0.3;  rule[2][2]=0.27;
      p[0]=0.79;p[1]=0.21;
  }
if(k==5){
      ruleNumber=4;
      scale[0]=400;
      scale[1]=400;
      offsetX[0]=-50;offsetY[0]=-20;
      offsetX[1]=-50;offsetY[1]=-20;
      rule[0][0]=0.29; rule[1][0]=0.4; rule[2][0]=-0.4;
      rule[3][0]=0.3; rule[4][0]=0.28;rule[5][0]=0.44;
      rule[0][1]=0.33;  rule[1][1]=-0.34;  rule[2][1]=0.39;
      rule[3][1]=0.4;  rule[4][1]=0.41; rule[5][1]=0;
      rule[0][2]=0.42;  rule[1][2]=0;  rule[2][2]=0;
      //rule[3][2]=1;  rule[4][2]=0.4; rule[5][2]=1;
      rule[3][2]=0.63;  rule[4][2]=0.29; rule[5][2]=0.36;
      rule[0][3]=0.61;  rule[1][3]=0;  rule[2][3]=0;
      rule[3][3]=0.61;  rule[4][3]=0.19; rule[5][3]=0.23;
      p[0]=0.25;p[1]=0.25;p[2]=0.25;p[3]=0.25;
  }
  if(k==6){
      ruleNumber=3;
      scale[0]=150;
      scale[1]=150;
      offsetX[0]=-150;offsetY[0]=0;
      offsetX[1]=-150;offsetY[1]=0;
      rule[0][0]=0.5; rule[1][0]=0; rule[2][0]=0;
      rule[3][0]=0; rule[4][0]=0.5;rule[5][0]=0;
      rule[0][1]=0.5;  rule[1][1]=0;  rule[2][1]=1;
      rule[3][1]=0;  rule[4][1]=0.5; rule[5][1]=0;
      rule[0][2]=0.5;  rule[1][2]=0;  rule[2][2]=0.5;
      rule[3][2]=0;  rule[4][2]=0.5; rule[5][2]=0.5;
       p[0]=0.33;p[1]=0.33;p[2]=0.33;p[3]=0.34;
  }
    reinit();
  }

  void this_mousePressed(MouseEvent e) {
    startChange=true;
    getX[0]=e.getX();
    getY[0]=e.getY();

  }

  void choice2_itemStateChanged(ItemEvent e) {
    int k=choice2.getSelectedIndex();
    if (k==0){
      change=true;

//      setCursor(MOVE_CURSOR);
    }
    if (k==1){
      change=false;

//      setCursor(SW_RESIZE_CURSOR);
    }
  }

  void this_mouseReleased(MouseEvent e) {
    //e.
    getX[1]=e.getX();
    getY[1]=e.getY();
    startChange=false;
    reinit();
  }

  void reset_actionPerformed(ActionEvent e) {
    offsetX[1]=offsetX[0];
    offsetY[1]=offsetY[0];
    scale[1]=scale[0];
    reinit();
  }

}