positionctr.java

实现了Java与VRML的虚拟场景模型的外部通信方法

import java.io.*;
import java.lang.*;

import java.awt.*;
import java.util.*;
import java.awt.event.*;
import java.applet.*;

import vrml.external.Browser;
import vrml.external.Node;
import vrml.external.field.EventInSFVec3f;
import vrml.external.field.EventInSFRotation;

public class PositionCtr extends Applet implements Runnable
{	
	Thread readDataTh;
	Thread timerTh;
	Label timerLabel;
	
  Button[] Bt_Orie=new Button[5];
  Label[] Label_Posi=new Label[3];
  Label[] Label_Pdanwei=new Label[3];
	TextField[] Textf_Posi=new TextField[3];
	
	Label carPosition;
	Label carSpeed;
	Label Speeddanwei;
	TextField Text_Speed =new TextField("10",10);
	
	float X_Position, Y_Position, Z_Position;
	float value_Position[]=new float[3];
	float Speed;
	
	Scrollbar Speed_Sbar;
	Label speed;
	Label high;
	Label middle;
	Label low;
	Label empty;

	boolean stateBtn=true;
	boolean isScenceLoading=true;
	Browser browser;
  Node myMaterial;
	
  public void init()
  {
  	setLayout(null);
  	resize(200,600);
    
    readDataTh = new Thread(this);
    timerLabel=new Label("");   
    timerLabel.reshape(5,620,175,30);
//    timerLabel.setBackground(Color.green);
    add(timerLabel);
    timerTh = new Thread(new Timer(timerLabel));
    
    String str_Orie[]={"Front","Left","Back","Right","Stop"};
    String str_Posi[]={"X：","Y：","Z："};
    X_Position=0.0f;
    Y_Position=0.0f;
    Z_Position=-1.5f;
    Speed=15.0f;
        
    carPosition = new Label("小车的位置：");
    carSpeed = new Label("小车的速度：");
    Speeddanwei=new Label("cm/s");
    carPosition.reshape(20,30,120,20);
    carSpeed.reshape(20,145,120,20);
    Text_Speed.reshape(50,170,50,20);
    Speeddanwei.reshape(100,170,50,20);    
    add(carPosition);
    add(carSpeed);
    add(Text_Speed);
    Text_Speed.setEditable(false);
    add(Speeddanwei);

		Textf_Posi[0]=new TextField(Float.toString(X_Position),10);
    Textf_Posi[1]=new TextField(Float.toString(Y_Position),10);
    Textf_Posi[2]=new TextField(Float.toString(Z_Position),10);
//    Text_Speed=new TextField(Float.toString(Speed),10);
        
    speed=new Label("选择小车档位：");
    high=new Label("高速");
    middle=new Label("中速");
    low=new Label("低速");
    empty=new Label("空档");
    Speed_Sbar=new Scrollbar(Scrollbar.VERTICAL, 4, 1, 0, 4);
    Speed_Sbar.reshape(120,230,10,150);
    speed.reshape(20,210,120,20);
    high.reshape(60,250,50,20);
    middle.reshape(60,280,50,20);
    low.reshape(60,310,50,20);
    empty.reshape(60,340,50,20);
    add(speed);
    add(high);
    add(middle);
    add(low);
    add(empty);
    add(Speed_Sbar);
    
    Label createLabel =new Label("南京理工大学自动化学院");
		createLabel.reshape(25,600,170,30);
		add(createLabel);
		
	  for(int i=0;i<3;i++)
    {
    	Label_Posi[i]=new Label(str_Posi[i]);
    	Label_Pdanwei[i]=new Label("cm");
      add(Label_Posi[i]);
      add(Textf_Posi[i]);
      add(Label_Pdanwei[i]);
      Textf_Posi[i].setEditable(false);
      Label_Posi[i].reshape(45,55+25*i,20,20);
      Textf_Posi[i].reshape(70,55+25*i,50,20);
      Label_Pdanwei[i].reshape(120,55+25*i,50,20);
    }
   
    for(int i=0;i<5;i++)
    {
    	Bt_Orie[i]=new Button(str_Orie[i]);
      add(Bt_Orie[i]);
			if (0==i)
			{
				Bt_Orie[i].reshape(70,400,50,50);
			}
			else if (1==i)
			{
				Bt_Orie[i].reshape(20,450,50,50);
			}
			else if (2==i)
			{
				Bt_Orie[i].reshape(70,500,50,50);
			}
			else if (3==i)
			{		
				Bt_Orie[i].reshape(120,450,50,50);
			}
			else
			{
				Bt_Orie[i].addMouseListener(new MouseListener(){
					public void mousePressed(MouseEvent e)
					{
						changeText();
					}
					public void mouseClicked(MouseEvent e)
					{
					}
					public void mouseReleased(MouseEvent e)
					{
					}
					public void mouseEntered(MouseEvent e)
					{
					}
					public void mouseExited(MouseEvent e)
					{
					}
				});
				Bt_Orie[i].reshape(70,450,50,50);
			}
    }
  }
  
  public void start()
  {
  	while (isScenceLoading)
    {
      try
      {
        browser=Browser.getBrowser(this);
        myMaterial=(Node)(browser.getNode("CarPosition"));
        isScenceLoading=false;
      }
      catch(Exception e){}
    }
  	readDataTh.start();
  	timerTh.start();
  }

	public void run()
	{
		try 
		{
	    FileInputStream fis = new FileInputStream("E:\\毕业课题\\EAI_Position\\int.txt");
	    InputStreamReader isr = new InputStreamReader(fis);
	    LineNumberReader lnr = new LineNumberReader(isr);
	    String s = null;
	    int i=0;
	    while (true)
	    {	    	
	    	do
	    	{
	    		s = lnr.readLine();
	    		int n=i%3;
	    		switch (n)
	    		{
				    case 0:
				    {
			        X_Position = Integer.parseInt(s);
			        System.out.println("The decimal read: " + X_Position);			        
			        break;
				    }
				    case 1:
				    {
			        Y_Position = Integer.parseInt(s);
			        System.out.println("The decimal read: " + Y_Position);
			        break;
				    }
				    case 2:
				    {
			        Z_Position = Integer.parseInt(s);
			        System.out.println("The decimal read: " + Z_Position);			        
			        break;
				    }
				  }
			  }while ((i++)%3!=2 && s!=null);
			  setTextf_Posi();
		    try
				{ 
					Thread.sleep(1000); //等待读入下组数据 
				} 
				catch (InterruptedException e){ } 
		  }
	  } 
	  catch (Exception e) 
	  {
			e.printStackTrace();
	  }
	}
	
  public boolean handleEvent(Event event)
  {
    if (event.id==Event.SCROLL_LINE_UP || event.id==Event.SCROLL_LINE_DOWN
    		|| event.id==Event.SCROLL_ABSOLUTE)
    {
      setK_speed();
    }
    return true;
  }

  public void setK_speed()
  {
  }
  
  public void setTextf_Posi()
  {		
  	Textf_Posi[0].setText(Float.toString((X_Position+35)/10));
  	Textf_Posi[1].setText(Float.toString(Y_Position/10));
  	Textf_Posi[2].setText(Float.toString(Z_Position/10));
  	EventInSFVec3f newPosition=(EventInSFVec3f)myMaterial.getEventIn("set_translation");
  	value_Position[0]=(X_Position+35)/10;
  	value_Position[1]=Y_Position/10;
  	value_Position[2]=Z_Position/10;
    newPosition.setValue(value_Position);
	}
	
	public void changeText()
	{
		if (stateBtn)
		{
			Bt_Orie[4].setLabel("Start");
			stateBtn=false;
		}
		else
		{
			Bt_Orie[4].setLabel("Stop");
			stateBtn=true;
		}
	}
}


class Timer implements Runnable
{
	public Label timerLabel;
	
	public Timer(final Label timerLabel)
	{
		this.timerLabel=timerLabel;
	}
	
	public void run()
	{
		while(true)
		{
			try
			{
				Thread.sleep(100);
			}
			catch (InterruptedException e) {}
			timerLabel.setText((new Date()).toString());
		}
	}
}

//<applet code="PositionCtr.class" height="600" width="180" mayscript>
//</applet>