// draw3D1.java  opens three view windows X-Y  X-Z  Z-Y
//               opens 3D window and Menu window

import java.*;
import java.awt.*;
import java.awt.event.*;

public class draw3D1
{
  final int width = 300;
  final int height = 300;
  final int Mwidth = 200;

  int xm, ym, bm; // mouse position
  boolean topView = true;
  boolean frontView = true;
  boolean rightView = true;
  boolean gridOn = true;
  
  int xp;         // last mouse location during drag
  int yp;
  boolean tracking = false; // tracking mouse motion
  
  Frame    fXY, fXZ, fZY, f3D, fMenu;
  Graphics gXY, gXZ, gZY, g3D, gMenu;
  
  draw3D1()
  {
    System.out.println("draw3D1 starting");
    new MyThread("X-Y", Mwidth,       height).start();
    new MyThread("X-Z", Mwidth,            0).start();
    new MyThread("Z-Y", width+Mwidth, height).start();
    new MyThread("3D" , width+Mwidth,      0).start();
    new MyThread("Menu",           0,      0).start();
    System.out.println("draw3D1 constructor ending");
  }
  
  class MyThread extends Thread
  {
    String id;
    Graphics g;
    Frame f;
    
    MyThread(String who, int xLoc, int yLoc)
    {
      id = who;
      // initiate a window for each thread
      f = new Frame();
      f.setTitle("draw3D1 "+who);
      f.setLocation(xLoc, yLoc);
      if(id=="Menu") f.setSize(Mwidth, 2*height);
      else           f.setSize(width,  height);
      f.setBackground(Color.white);
      f.setForeground(Color.black);
      f.setVisible(true);
      g = f.getGraphics(); // every window has its Frame, Graphics
      f.addWindowListener(new WindowAdapter() // and Listeners
      {
        public void windowClosing(WindowEvent e)
        {
          System.exit(0);
        }
      });
      f.addMouseListener (new mousePressHandler());
      f.addMouseListener (new mouseReleaseHandler());
      f.addMouseMotionListener (new mouseMotionHandler());
    }
    
    public void run()
    {
      try
      {
        System.out.println(id+" running");
        if     (id=="X-Y") {fXY=f; gXY=g;}
        else if(id=="X-Z") {fXZ=f; gXZ=g;}
        else if(id=="Z-Y") {fZY=f; gZY=g;}
        else if(id=="3D")  {f3D=f; g3D=g;}
        else if(id=="Menu"){fMenu=f; gMenu=g; paint(g);}
        sleep(1);
      }
      catch(InterruptedException e)
      {
      }
      System.out.println("run exiting");
    }
  }

  
  public void paint(Graphics g)
  {
    // call methods to do actual drawing
    System.out.println("paint running");
    drawXY(fXY, gXY);
    drawXZ(fXZ, gXZ);
    drawZY(fZY, gZY);
    draw3D(f3D, g3D);
    drawMenu(fMenu, gMenu);
  }
  
  public void drawXY(Frame f, Graphics g)
  {
    System.out.println("in drawXY");
    g.clearRect(0, 0, width, height);
    if(gridOn) for(int i=50; i<width; i=i+50)
                 for(int j=50; j<height; j=j+50)
                   g.drawOval(i, j, 1, 1);
  }
  
  public void drawXZ(Frame f, Graphics g)
  {
    System.out.println("in drawXZ");    
    g.clearRect(0, 0, width, height);
    if(gridOn) for(int i=50; i<width; i=i+50)
                 for(int j=50; j<height; j=j+50)
                   g.drawOval(i, j, 1, 1);
  }
  
  public void drawZY(Frame f, Graphics g)
  {
    System.out.println("in drawZY");    
    g.clearRect(0, 0, width, height);
    if(gridOn) for(int i=50; i<width; i=i+50)
                 for(int j=50; j<height; j=j+50)
                   g.drawOval(i, j, 1, 1);
  }
  
  public void draw3D(Frame f, Graphics g)
  {
    System.out.println("in draw3D");
    g.clearRect(0, 0, width, height);
    g.setColor(Color.green);
    g.fillRect(100,100,100,100);
  }

  public void drawMenu(Frame f, Graphics g)
  {
    System.out.println("in drawMenu");    
    // clear not needed
    g.setColor(Color.yellow);
    g.fillRect(10,40,Mwidth-20,30);
    g.setColor(Color.black);
    if(topView)  g.drawString("change top to bottom", 20, 60);
    if(!topView) g.drawString("change bottom to top", 20, 60);

    g.setColor(Color.yellow);
    g.fillRect(10,80,Mwidth-20,30);
    g.setColor(Color.black);
    if(rightView)  g.drawString("change right to left", 20, 100);
    if(!rightView) g.drawString("change left to right", 20, 100);

    g.setColor(Color.yellow);
    g.fillRect(10,120,Mwidth-20,30);
    g.setColor(Color.black);
    if(frontView)  g.drawString("change front to back", 20, 140);
    if(!frontView) g.drawString("change back to front", 20, 140);

    g.setColor(Color.yellow);
    g.fillRect(10,2*height-50,Mwidth-20,30);
    g.setColor(Color.black);
    if(gridOn)  g.drawString("turn grid off", 20, 2*height-30);
    if(!gridOn) g.drawString("turn grid on",  20, 2*height-30);

  }

  boolean in_rect(int x, int y, int w, int h)
  {
      return xm>x && xm<x+w && ym>y && ym<y+h;
  }

  class mousePressHandler extends MouseAdapter
  {
    public void mousePressed (MouseEvent e)
    {
      xm = e.getX();
      ym = e.getY();
      bm = e.getButton();
      Component c = e.getComponent(); // get frame that received mouse press

      // System.out.println("down xm="+xm+"   ym="+ym+"   bm="+bm); // debug print
      // System.out.println("fMenu string="+fMenu.toString()); // debug print
      // System.out.println("component string="+c.toString()); // debug print
	  // String s = e.paramString();
      // System.out.println("param string="+s); // debug print
	  
	  if(c == fMenu) // Menu processing
	  {
        if(in_rect(10,40,Mwidth-20,40)) topView = !topView;
        if(in_rect(10,80,Mwidth-20,40)) rightView = !rightView;
        if(in_rect(10,120,Mwidth-20,40)) frontView = !frontView;
        if(in_rect(10,2*height-50,Mwidth-20,40)) gridOn = !gridOn;
      }

      if(c == fXY) // Front view processing
	  {
	  }

      if(c == fXZ) // Top view processing
	  {
	  }

      if(c == fZY) // Right view processing
	  {
	  }

      if(c == f3D) // 3D view processing
	  {
	  }
	  
      paint(gXY); // actually paints all views
    }
  }

  class mouseReleaseHandler extends MouseAdapter
  {
    public void mouseReleased (MouseEvent e)
    {
      xm = e.getX();
      ym = e.getY();
      bm = e.getButton();
      tracking = false;
      // System.out.println("up   xm="+xm+"   ym="+ym+"   bm="+bm); // debug print
    }
  }

  class mouseMotionHandler extends MouseMotionAdapter
  {
    public void mouseDragged (MouseEvent e)
    {
      int xct, yct;
      
      if(tracking)
      {
        xm = e.getX();
        ym = e.getY();
        bm = e.getButton();
        // xc = xc + (xm-xp); // mouse moved (new-old)

        // requestFocus();
        // System.out.println("drag xm="+xm+"   ym="+ym+"   bm="+bm); // debug print
        // repaint();
      }
    }
  }


  static public void main(String[] args)
  {
    new draw3D1();
    System.out.println("draw3D1 main ending");
  }
}