import java.applet.* ;
import java.awt.* ;
import java.awt.image.* ;
import java.net.*;
import java.io.*;
import java.io.Reader.*;
import java.io.InputStreamReader.*;
import java.awt.Component.*;
//import java.io.InputStream;
//import java.lang.Runtime;
//import javax.swing.*;

// I took a very simple drawing program and extended it to making 
// rubberband selections of map regions.

// Now I need to choose a non-blank background to draw over.

public class Rubberband extends Applet {
   private int startx, starty ; // start of line
   private int lastx, lasty ;   // last points of line (so far)

   //private int usePoly;
   private String polygonfile = "0";
   private String selectedStations;
   
   private boolean newflag;
   private int XMAX,YMAX,XMIN,YMIN;
   private double RX1,RX2,RY1,RY2,TOPY;
   private int YADJ;
   private double center, oldcenter;
   private boolean zoomedIn;
   private boolean polygonMode;
   private int numverts;
   private int MAXVERTS = 25;
   private int xlist[] = new int[MAXVERTS];
   private int ylist[] = new int[MAXVERTS];
   private String gif = "test.gif";
   Graphics g ;         // graphics for drawing
   Image offscreen;
   Graphics offscreen_g;
   Image ourmap, drawme, worldmap;   
   ImageObserver pic;
   MediaTracker tracker = new MediaTracker(this);
   Label clabel;
   TextField ctext;
   Font bigfont = new Font("TimesRoman",Font.BOLD,20);
   Font debugfont = new Font("TimesRoman",Font.ITALIC,10);
   Font oldfont;
   Choice stations,centerOn;
   String oldstations;
   String selectedData;
   String worldstations;
   BorderLayout bl;
   GridBagLayout gbl;
   GridBagConstraints gbc;
   Button clearbutton;
   Button pvpbutton;
   Panel rightpanel;
   
   public void init() {   
      this .setBackground(Color.white);
      polygonMode = false;
      bl = new BorderLayout(1,1);
      setLayout(bl);
      Panel p = new Panel();
      add("North",p);
      
      Panel p2 = new Panel();
      p2.setLayout(new BorderLayout(1,1));
      add("East",p2);
      Panel p3 = new Panel();
      p3.setLayout(new GridLayout(5,1,5,5));
      p3.add(new Label("Current Mode:"));
      Button b = new Button("Box Mode");
      p3.add(b);
      p3.add(clearbutton = new Button("Clear Selection"));
      
      b = new Button("Use Stations");
      p3.add(b);
      p2.add("North",p3);
      
      p2.add("South",pvpbutton = new Button("PvP Plots"));
      p2.validate();
      pvpbutton.show(false);
      rightpanel = p2;
      
      startx = -1;
      g = this .getGraphics() ;
      
      p.add(new Button("Reset Map"));
      p.add(new Button("Zoom In"));
      p.add(clabel = new Label("  Center On:"));
      
      center = 0.0;
      oldcenter = 0.0;      
      zoomedIn = false;
      
      centerOn = new Choice();
      p.add(centerOn);
     
      centerOn.addItem("180'");
      centerOn.addItem("135' W");
      centerOn.addItem("90' W");
      centerOn.addItem("45' W");
      centerOn.addItem("0'");
      centerOn.select("0'");
      centerOn.addItem("45' E");
      centerOn.addItem("90' E");
      centerOn.addItem("135' E");
      centerOn.addItem("180'");
      
      p.add(new Label("  Show:"));
      p.add(stations = new Choice());
      stations.addItem("WOCE CTD");
      stations.addItem("WOCE BOT");
      stations.addItem("WOCE BOTH");
      stations.addItem("None");
      oldstations = stations.getSelectedItem();
      worldstations = oldstations;
      
      newflag = false;
      worldmap = myGetImage("world0.gif");
      drawme = worldmap;
      
      offscreen = createImage(size().width,size().height);
      offscreen_g = offscreen.getGraphics();      
      offscreen_g.drawImage(drawme,0,0,this);
      
      TOPY = 0.0;  // What the 'top' of the map should be.  
                   // could be 90.0, 0.0, or even -30.0. 
      XMAX = -1;
      YMAX = -1;
      YADJ = 38;
      RX1 = -180.0;
      RX2 = 180.0;
      RY1 = -90.0;
      RY2 = TOPY;
   }

   public boolean action(Event e, Object arg) {
      if (e.target instanceof Choice) {
        if (e.target == stations) {
          String ns = stations.getSelectedItem();
	  if (ns.equals(oldstations)) return true;
	  oldstations = ns;
	  String R = RX1+"/"+RX2+"/"+RY1+"/"+RY2;
	  String A = anotinterval(RX1,RX2,RY1,RY2);
	  ns = ns.replace(' ','_');
	  //working();
	  //String location;
	  if (zoomedIn) {
	      //String location = "http://deacon.tamu.edu/cgi-bin/zoomtest.csh?"+R+"/"+A+"/"+ns+"/"+usePoly;	      
	      String location = "http://deacon.tamu.edu/cgi-bin/zoomtest.csh?"+R+"/"+A+"/"+ns+"/"+polygonfile;	      
	      URL url = null;
	      URLConnection conn = null;
	      String ref = null;	    
	      try { 
	          url = new URL(location);
		  conn = url.openConnection();
		  InputStream cx = conn.getInputStream();
		  InputStreamReader inx = new InputStreamReader(cx);
		  BufferedReader in = new BufferedReader(inx);
		  while (ref == null || ref.compareTo("Done!") != 0) {
		      ref = in.readLine();		        
		      if (ref.equals("GIFNAME:")) {
		          gif = in.readLine();
	              }
		      if (ref.equals("TMPNAME:")) {
		          selectedStations = in.readLine();
	              }
		  }    
		  in.close();
		  if (ourmap != null) ourmap.flush();
		  ourmap = myGetImage(gif);
		  drawme = ourmap;
		  clabel.show(false);
		  //ctext.show(false);
		  centerOn.show(false);
		  repaint();		  
	      } catch (Exception err) { System.err.println(err); }
	  } else {
	      worldstations = oldstations;
	      String location = "http://deacon.tamu.edu/cgi-bin/zoom1.csh?"+R+"/"+ns;
	      URL url = null;
	      URLConnection conn = null;
	      String ref = null;	    
	      try { 
	          url = new URL(location);
		  conn = url.openConnection();
		  InputStream cx = conn.getInputStream();
		  InputStreamReader inx = new InputStreamReader(cx);
		  BufferedReader in = new BufferedReader(inx);
		  while (ref == null || ref.compareTo("Done!") != 0) {
		      ref = in.readLine();  
		  }    
		  in.close();
		  if (worldmap != null) worldmap.flush();
		  worldmap = myGetImage("world.gif");
		  //startx = -1;
		  drawme = worldmap;
		  repaint();
	      } catch (Exception err) { 
         	  debuging(err.toString());
                  System.err.println(err); 
              }
	      return true;		  
	  }	  
	} else {
	  //Okay, they're changing the center degree.  
	  String centerstr = centerOn.getSelectedItem();
	  String f = null;
          oldcenter = center;
	  if (centerstr.equals("0'")) { f = "world0.gif"; center =0.0; }
	  if (centerstr.equals("45' E")) { f = "world45.gif";center =45.0; }
	  if (centerstr.equals("90' E")) { f = "world90.gif";center =90.0; }
	  if (centerstr.equals("135' E")) {f = "world135.gif";center =135.0; }
	  if (centerstr.equals("180'")) {f = "world180.gif";center =180.0; }
	  if (centerstr.equals("45' W")) {f = "world-45.gif";center =-45.0; }
	  if (centerstr.equals("90' W")) {f = "world-90.gif";center =-90.0; }
	  if (centerstr.equals("135' W")) {f = "world-135.gif";center =-135.0; }
	  if (center == oldcenter) return true;
	  working();
	  RX1 = center-180.0;
	  RX2 = center+180.0;
	  startx = -1;
	  numverts = 0;
	  if (f != null) {
	      if (worldmap!=null) worldmap.flush();
	      worldmap = myGetImage(f);
	      //worldmap = myGetImage("world0.gif");
	      drawme = worldmap;	      
	      repaint(); 
	  }
	  return true;
	} 
      }
      if (e.target instanceof TextField) {
          TextField ee = (TextField)e.target;  
	  try {
	      double c = center;
	      c = (Double.valueOf(ee.getText())).doubleValue();  //Grr they hid that command
	      //sscanf(c,"%D",ee.getText());
	      //c = ee.getText().doubleValue();
	      if (c < -180.0 || c > 180.0) {
		  ee.setText(""+center);
	          return true;		  
	      }
	      if (c == center) return true;
	      working();
	      ee.setText(""+c);	      
	      oldcenter = center;
	      center = c;
	      RX1 = RX1 + center-oldcenter;
	      RX2 = RX2 + center-oldcenter;
	      String R = RX1+"/"+RX2+"/"+RY1+"/"+RY2;
	      String sta = stations.getSelectedItem();
	      sta = sta.replace(' ','_');
	      String location = "http://deacon.tamu.edu/cgi-bin/zoom1.csh?"+R+"/"+sta;
	      URL url = null;
	      URLConnection conn = null;
	      String ref = null;	    
	      try { 
	          url = new URL(location);
		  conn = url.openConnection();
		  /// Okay, it looks like at this point it's actually opened
		  /// and run the CGI script. Since there isn't actually any
		  /// output, we should be done.
		  //ourmap = getImage(getDocumentBase(),"test.gif");
		  
		  //InputStreamReader inx = new InputStreamReader(System.in);
		  InputStream cx = conn.getInputStream();
		  InputStreamReader inx = new InputStreamReader(cx);
		  
		  BufferedReader in = new BufferedReader(inx);
		  while (ref == null || ref.compareTo("Done!") != 0) {
		      ref = in.readLine();  
		  }    
		  in.close();
		  if (worldmap != null) worldmap.flush();
		  worldmap = myGetImage("world.gif");
		  startx = -1;
		  drawme = worldmap;
		  repaint();
		  
	      } catch (Exception err) { System.err.println(err); }
	      
	  }
	  catch (Exception err) {
	      System.err.println(err);
	      System.out.println("Bad input value "+ee.getText()+".");
	      ee.setText(""+center);
	  }
	    
	  
      }	
      if (e.target instanceof Button) { 
          if (((String)arg).equals("Use Stations")) {
	    int i;
	    if (startx == -1) {
	        numverts = 4;
		xlist[0] = XMIN;
		xlist[1] = XMAX;
		xlist[2] = XMAX;
		xlist[3] = XMIN;
		ylist[0] = YMIN;
		ylist[1] = YMIN;
		ylist[2] = YMAX;
		ylist[3] = YMAX;
	    } else {
	        if (!polygonMode && startx != lastx && starty != lasty) {
		    numverts = 4;
		    xlist[0] = startx;
		    xlist[1] = lastx;
		    xlist[2] = lastx;
		    xlist[3] = startx;
		    ylist[0] = starty;
		    ylist[1] = starty;
		    ylist[2] = lasty;
		    ylist[3] = lasty;		    
		}
	    }
	    // At this point we need to write the polygon out.
	    // If there is no polygon, we've created a temporary one.
            String s = "# Polygon file\nX\n";
	    for (i=0; i < numverts; i++) {
		s = s + (xtor(xlist[i]))+" "+(ytor(ylist[i]))+"\n";
            }
	    s = s + (xtor(xlist[0]))+" "+(ytor(ylist[0]))+"\n";
	    sendData(s);	    	    
            // Call the 'zoom' button.             
	    zoomIn(xtor(XMIN),xtor(XMAX),ytor(YMIN),ytor(YMAX));
	    pvpbutton.show(true);
	    rightpanel.validate();
	    return true;
	  }
	  if (((String)arg).equals("PvP Plots")) {
	      // First, we must call make_tempdata.py.
	      // Actually, I've replaced it with make_tempdata.pl because Perl is much 
	      // faster than Python for text manipulation.
	      message("Creating PvP Table - Please Wait");
	      String location = "http://deacon.tamu.edu/cgi-bin/make_tempdata.pl?infile="+selectedStations;	      
	      URL url = null;
	      URLConnection conn = null;
	      String ref = null;	    
	      String tmpfile = null;
	      try { 
	          url = new URL(location);
		  conn = url.openConnection();
		  InputStream cx = conn.getInputStream();
		  InputStreamReader inx = new InputStreamReader(cx);
		  BufferedReader in = new BufferedReader(inx);
		  while (ref == null || ref.compareTo("Done!") != 0) {
		      ref = in.readLine();  
		      if (ref.equals("TMPFILE:")) {
		          tmpfile = in.readLine();
			  System.out.println("Tmpfile="+tmpfile);
	              }
		      if (ref.equals("INFILE:")) {
		          ref = in.readLine();
	              }
		  }    
		  in.close();
		  //if (ourmap != null) ourmap.flush();
		  //ourmap = myGetImage(gif);
		  //drawme = ourmap;
		  clabel.show(false);
		  //ctext.show(false);
		  centerOn.show(false);
		  repaint();		  
	      } catch (Exception err) { System.err.println(err); }
	      location = "http://deacon.tamu.edu/cgi-bin/my_pvp.py?DATA="+tmpfile+"&BASEMAP="+gif;
	      try {
	          url = new URL(location);
	          getAppletContext().showDocument(url,"MyPvP");	      	      	      	      
	      } catch (Exception err) { System.err.println(err); }	
	      return true;  
	  }
	  
          if (((String)arg).equals("Polygon Mode")) {
              polygonMode = false;
	      startx = -1;
	      ((Button)e.target).setLabel("Box Mode");
	      //clearbutton.setLabel("Clear Selection");
              repaint();	      
	  }
	  if (((String)arg).equals("Box Mode")) {
	      polygonMode = true;
	      startx = -1;
	      ((Button)e.target).setLabel("Polygon Mode");
	      //clearbutton.setLabel("Clear Selection");
	      repaint();	      
	  }
	  //if (((String)arg).equals("Clear Selection")) {
	  //    startx = -1;
	  //    repaint();	      
	  //}
          if (((String)arg).equals("Zoom In")) {
	      double x1,x2,y1,y2,z;
	      int rc,i;
	      Process p;
	      Runtime r;
	      
	      // Must calculate -R, then call cgi-script to zoom in.
	      
	      if (polygonMode) {
	        if (numverts < 3) return false;
		startx = 10000;
		lastx = -10000;
		starty = 10000;
		lasty = -10000;
		for (i=0;i<numverts;i++) {		   
		    if (xlist[i] < startx) startx = xlist[i];
		    if (xlist[i] > lastx) lastx = xlist[i];
		    if (ylist[i] < starty) starty = ylist[i];
		    if (ylist[i] > lasty) lasty = ylist[i];
		}
	      } else {
	        if (startx == -1) return false;
	      }	

	      if (startx == lastx || starty == lasty) return false;
              //ourmap.flush();

	      
	      x1 = (double)(startx - XMIN) / (double)(XMAX-XMIN);
	      x1 = (double)x1 * (RX2-RX1) + (double)RX1;
	      x2 = (double)(lastx - XMIN) /(double)(XMAX-XMIN);
	      x2 = (double)x2 * (RX2-RX1) + (double)RX1;
	      y1 = (double)(starty - YMIN) / (double)(YMAX-YMIN);
	      y1 = (double)(1.0-y1) * (RY2-RY1) + RY1;
	      y2 = (double)(lasty - YMIN) / (double)(YMAX-YMIN);
	      y2 = (double)(1.0-y2) * (RY2-RY1) + RY1;
	      
	      
	      //y1 = -y1;
	      //y2 = -y2;
	      
	      if (x1 > x2) { z=x1; x1=x2; x2=z; }
	      if (y1 > y2) { z=y1; y1=y2; y2=z; }
	      // Now call "test.csh x1/x2/y1/y2"
	      //String location = "http://deacon.tamu.edu/cgi-bin/zoomtest.csh";
	      
	      // Okay, the basics are working... now I need to calculate an appropriate
	      // Anotation Interval such that we ALWAYS get 5-10 annotations.
	      
	      String R = x1+"/"+x2+"/"+y1+"/"+y2;
	      String A = anotinterval(x1,x2,y1,y2);
	      String ns = oldstations;
	      ns = ns.replace(' ','_');
	      //String location = "http://deacon.tamu.edu/cgi-bin/zoomtest.csh?"+R+"/"+A+"/"+ns+"/"+usePoly;
	      String location = "http://deacon.tamu.edu/cgi-bin/zoomtest.csh?"+R+"/"+A+"/"+ns+"/"+polygonfile;
	      URL url = null;
	      URLConnection conn = null;
	      String ref = null;
              working();
 
	      try { 
	          zoomedIn = true;
	          url = new URL(location);
		  conn = url.openConnection();		  
		  /// Okay, it looks like at this point it's actually opened
		  /// and run the CGI script. Since there isn't actually any
		  /// output, we should be done.
		  //ourmap = getImage(getDocumentBase(),"test.gif");
		  
		  //InputStreamReader inx = new InputStreamReader(System.in);
		  InputStream cx = conn.getInputStream();
		  InputStreamReader inx = new InputStreamReader(cx);
		  
		  BufferedReader in = new BufferedReader(inx);
		  while (ref == null || ref.compareTo("Done!") != 0) {
		      ref = in.readLine();  
		      if (ref.equals("GIFNAME:")) {
		          gif = in.readLine();
	              }
		      if (ref.equals("TMPNAME:")) {
		          selectedStations = in.readLine();
	              }
		  }    
		  in.close();
		  //offscreen.invalidate();
		  //ourmap.invalidate();
		  //for (rc=1;rc<100000;rc++) { }
		  if (ourmap != null) ourmap.flush();
		  ourmap = myGetImage(gif);
		  //imageUpdate(ourmap,ALLBITS,0,0,0,0);
		  RX1 = x1;
		  RX2 = x2;
		  RY1 = y1;
		  RY2 = y2;
		  if (polygonMode) {
		    for (i=0;i<numverts;i++) {
		        double zz;
			
			zz = (double)(xlist[i] - startx)/(double)(lastx-startx);
			zz = zz * (double)(XMAX-XMIN)+(double)XMIN;
			xlist[i] = (int)zz;
			zz = (double)(ylist[i] - starty)/(double)(lasty-starty);
			zz = zz * (double)(YMAX-YMIN)+(double)YMIN;
			ylist[i] = (int)zz;
			
			//zz = (double)xlist[i] / (RX2-RX1) + RX1;
		        //xlist[i] = (int)((double)(zz-startx) * (double)(lastx-startx));
			// Scale the X value to new resolution.
		        //ylist[i] = (int)((double)(ylist[i]-starty) / (double)(lasty-starty));
			//ylist[i] = (int)((double)(1.0-ylist[i]) * (RY2-RY1) + RY1);
			// Scale the Y value.
		    }	
		  }  

		  if (!polygonMode) startx = -1;
		  
		  //for (rc=1;rc<100000;rc++) { } // Did this do it? Nope
		  // I apparently stumbled across the fix by accident. Ugh!
		  drawme = ourmap;
		  //for (rc=1;rc<100000;rc++) { }
		  clabel.show(false);
		  //ctext.show(false);
		  centerOn.show(false);
		  //this.validate();
		  repaint();
		  
	      } catch (Exception err) { System.err.println(err); }
	       	 
	  } else {
              if (((String)arg).equals("Reset Map")) {
	          clabel.show(true);
		  //ctext.show(true);
		  centerOn.show(true);
		  pvpbutton.show(false);
	          //ourmap.flush();
                  RX1 = -180+center; RX2 = 180+center;
	          RY1 = -90; RY2 = TOPY;
		  //ourmap = myGetImage("test.gif"); // Just to access it?
         	  //ourmap = myGetImage("world.gif");	
		  //usePoly = 0;
		  polygonfile = "0";
		  numverts = 0;
 
		  String ns = stations.getSelectedItem();
		  if (!ns.equals(worldstations)) {
		      working();
		      ns = ns.replace(' ','_');
	              String R = RX1+"/"+RX2+"/"+RY1+"/"+RY2;
 	              String location = "http://deacon.tamu.edu/cgi-bin/zoom1.csh?"+R+"/"+ns;
  		      URL url = null;
		      URLConnection conn = null;
	      	      String ref = null;	    
        	      try { 
	                  url = new URL(location);
		          conn = url.openConnection();
        		  InputStream cx = conn.getInputStream();
	        	  InputStreamReader inx = new InputStreamReader(cx);
		          BufferedReader in = new BufferedReader(inx);
        		  while (ref == null || ref.compareTo("Done!") != 0) {
	        	      ref = in.readLine();  
		          }    
         		  in.close();
		          if (worldmap != null) worldmap.flush();
        		  worldmap = myGetImage("world.gif");
	        	  //startx = -1;
		          //drawme = worldmap;
		          //repaint();
	              } catch (Exception err) { System.err.println(err); }
		  }
                  worldstations = oldstations;		  
		  drawme = worldmap;
		  zoomedIn = false;
              }
	      
              startx=-1; repaint() ;
	  }
      }
      else return super.action(e,arg) ;
      return true ;
   }

   private Image myGetImage(String fileName) {
       if (fileName == null) return null;
       Image theImage = getImage(getDocumentBase(),fileName);
       tracker.addImage(theImage,0);
       try {
           tracker.waitForID(0);
       } catch (InterruptedException e) {
           System.out.println("Loading for "+fileName+" interrupted.");
	   return null;
       }
       if (tracker.statusID(0,false) != tracker.COMPLETE) {
           System.out.println("Warning! "+fileName+" not loaded!");
	   return null;
       }
       return theImage;
   }    
       
   public double xtor(int x) {
       double z;
       z = (double)(x-XMIN)/(double)(XMAX-XMIN);
       z = (double)z * (RX2-RX1) + (double)RX1;
       return z;
   }

   public double ytor(int y) {
       double z;
       z = (double)(y-YMIN)/(double)(YMAX-YMIN);
       z = (double)(1.0-z) * (RY2-RY1) + (double)RY1;
       return z;
   }    
       
   // start the line
   public boolean mouseDown(Event e,int x, int y) {
      //repaint();      
      //offscreen_g.drawImage(ourmap,0,0,this);
      
      while (XMAX < 0 || YMAX < 0) set_minmax();
      
      y = y - YADJ;
      
      // A quick experiment.
      if (x > XMAX) x = XMAX;
      if (x < XMIN) x = XMIN;
      if (y > YMAX) y = YMAX;
      if (y < YMIN) y = YMIN;
      
      //if (x > XMAX || x < XMIN) return false;
      //if (y > YMAX || y < YMIN) return false;
      
      if (polygonMode) {
          if (startx == -1) {
	      startx = x;
	      starty = y;
	      numverts = 1;
	      xlist[0] = startx;
	      ylist[0] = starty;
	  } else if (numverts < MAXVERTS-1) {	      
	      numverts = numverts + 1;     
	      xlist[numverts-1] = x;
	      ylist[numverts-1] = y;
          }
      } else {
          startx = x ;
          starty = y;
          lastx = startx ;
          lasty = starty ;
          newflag = false;
      }
      repaint();
      return true ;
   }
   
   /* This subroutine writes data out to a special CGI file. */
   private void sendData(String s) {      
      try {
          URL url = new URL("http","deacon.tamu.edu","/cgi-bin/write_polygon.pl");       
          URLConnection con = url.openConnection();

          con.setDoOutput(true);
          con.setDoInput(true);
          con.setUseCaches(false);
          con.setRequestProperty("Content-type", "text/plain");			
          con.setRequestProperty("Content-length", s.length()+"");	

          PrintStream out = new PrintStream(con.getOutputStream());
          out.print(s);
          out.flush();
          out.close();

          DataInputStream in = new DataInputStream(con.getInputStream());
          String ss;
	  polygonfile = "";
          while ((ss = in.readLine()) != null) {
	    polygonfile = ss;
          }
	  System.out.println("Polygonfile = "+polygonfile);
          in.close();   
     } catch (Exception err) { System.err.println(err); }
      	  
   }
   
   public void paint(Graphics g) {
      while (XMAX < 0 || YMAX < 0) set_minmax();
      offscreen_g.setColor(Color.white);
      //offscreen_g.fillRect(0,0,size().width-1,size().height-1);
      offscreen_g.fillRect(0,0,XMAX,YMAX);
      
      offscreen_g.setColor(Color.black);
      offscreen_g.drawImage(drawme,0,0,this);
      if (startx > -1 && !polygonMode) {                     
         int x1,y1,x2,y2,z;
         //offscreen_g.setColor(Color.black);
	 x1 = startx; x2 = lastx; y1 = starty; y2 = lasty;
	 if (x1 > x2) { z = x1; x1 = x2; x2 = z; }
	 if (y1 > y2) { z = y1; y1 = y2; y2 = z; }
         offscreen_g.drawRect(x1,y1,x2-x1,y2-y1);
	 //offscreen_g.drawString("WORKING...",(XMAX-XMIN)/2+XMAX,(YMAX-YMIN)/2+YMIN);
      }	 
      if (polygonMode && startx > -1) {
         offscreen_g.drawPolygon(xlist,ylist,numverts); 
	 int i;
	 for (i = 0; i < numverts; i++) {
	     offscreen_g.drawOval(xlist[i]-2,ylist[i]-2,4,4);
	 }
	      
	 //if (numverts == 1) offscreen_g.drawOval(startx,starty,3,3);
      }
      
      g.drawImage(offscreen,0,YADJ,this);
   }
   
   public void update(Graphics g) {
       paint(g);
   }   

   public void set_minmax() {
      int xedge = 39;
      int yedge = 21;
      XMIN = xedge;
      YMIN = yedge;
      XMAX = worldmap.getWidth(pic)-xedge;
      YMAX = worldmap.getHeight(pic)-yedge;      
   }

   public String anotinterval(double X1,double X2,double Y1,double Y2) {
      // Return the annotation interval to be used.
      // Also append the size of the dots to draw.
      String anot;
      double z;
      double dx = X2 - X1;
      double dy = Y2 - Y1;
      double ddx = dx / 9.0;
      double ddy = dy / 9.0;
      double sz;
      if (ddx > 1.0) {
          ddx = Math.round(ddx);
	  z = ddx / 5.0;
	  z = Math.round(z) * 5.0;
	  if (z >= 5.0) ddx = z;
      } else {
          //ddx = ddx * 2.0;
	  ddx = 1.0;
      }
      if (ddy > 1.0) {
          ddy = Math.round(ddy);
	  z = ddy / 5.0;
	  z = Math.round(z) * 5.0;
	  if (z >= 5.0) ddy = z;
      } else {
          //ddy = ddy * 2.0;
	  ddy = 1.0;
      }
      
      sz = 0.01;
      z = 360.0/dx;
      if (180.0/dy < z) z = 180.0/dy;
      
      sz = sz * z;
      sz = Math.round(sz * 100)/100.0;
      return ddx+"/"+ddy+"/"+sz;
   }

   public void working() {
      int x=0,y=0;
      String text = "WORKING...";
      oldfont = g.getFont();
      g.setFont(bigfont);
      FontMetrics xx = g.getFontMetrics();
      //x = FontMetrics.stringWidth(text);
      x = xx.stringWidth(text);
      y = xx.getHeight();
      while (XMAX < 0 || YMAX < 0) set_minmax();
      x = (XMAX-XMIN)/2 + XMIN - x/2;
      y = (YMAX-YMIN)/2 + YMIN + y;
      g.drawString(text,x,y);
      g.setFont(oldfont);
      return;
   }    

   public void debuging(String text) {//throws IOException {
      //File debugfile = new File("ddd");
      //FileOutputStream debugstream1 = new FileOutputStream(debugfile);
      //DataOutputStream debugstream = new DataOutputStream(debugstream1);
      int x=0,y=0;
      oldfont = g.getFont();
      g.setFont(debugfont);
      FontMetrics xx = g.getFontMetrics();
      //x = xx.stringWidth(text);
      y = xx.getHeight();
      while (XMAX < 0 || YMAX < 0) set_minmax();
      //x = (XMAX-XMIN)/2 + XMIN - x/2;
      y = (YMAX-YMIN)/2 + YMIN + y;
      g.drawString(text,x,y);
      g.setFont(oldfont);
     
      //if(!debugstream.canWrite()) throw FileCopyException("file can not write");
      //debugstream.writeChars(text);
      //debugstream.close(); 
      //debugstream1.close(); 
 
      return;
   }    

    public void message(String str) {
      int x=0,y=0;
      //String text = "WORKING...";
      oldfont = g.getFont();
      g.setFont(bigfont);
      //x = FontMetrics.stringWidth(text);
      FontMetrics xx = g.getFontMetrics();
      x = xx.stringWidth(str);
      y = xx.getHeight();
      while (XMAX < 0 || YMAX < 0) set_minmax();
      x = (XMAX+XMIN)/2 - x/2;
      y = (YMAX+YMIN)/2 + y;
      g.drawString(str,x,y);
      //g.drawOval(x,y,4,4);
      g.setFont(oldfont);
      return;
   }    
  /* public boolean mouseMove(Event e, int x, int y) {
      if (!polygonMode) return false;
      if (numverts == 0) return false;
      if (x != xlist[numverts-1] || y != ylist[numverts-1]) {
          xlist[numverts] = x;
	  ylist[numverts] = y;
      }        
      repaint();    
      return true;  
   }  */ 


   private void zoomIn(double x1,double x2,double y1, double y2) {   
       int rc;
       double z;

       if (x1 > x2) { z=x1; x1=x2; x2=z; }
       if (y1 > y2) { z=y1; y1=y2; y2=z; }
        String R = x1+"/"+x2+"/"+y1+"/"+y2;
  	String A = anotinterval(x1,x2,y1,y2);
  	String ns = oldstations;
  	ns = ns.replace(' ','_');
  	//String location = "http://deacon.tamu.edu/cgi-bin/zoomtest.csh?"+R+"/"+A+"/"+ns+"/"+usePoly;
  	String location = "http://deacon.tamu.edu/cgi-bin/zoomtest.csh?"+R+"/"+A+"/"+ns+"/"+polygonfile;
  	URL url = null;
  	URLConnection conn = null;
  	String ref = null;
	working();
  	try { 
  	    zoomedIn = true;
  	    url = new URL(location);
  	    conn = url.openConnection();
  	    InputStream cx = conn.getInputStream();
  	    InputStreamReader inx = new InputStreamReader(cx);
  	    BufferedReader in = new BufferedReader(inx);
  	    while (ref == null || ref.compareTo("Done!") != 0) {
  		ref = in.readLine();  
		      if (ref.equals("GIFNAME:")) {
		          gif = in.readLine();
	              }
		      if (ref.equals("TMPNAME:")) {
		          selectedStations = in.readLine();
	              }
  	    }	 
  	    in.close();
  	    if (ourmap != null) ourmap.flush();
  	    ourmap = myGetImage(gif);
  	    RX1 = x1;
  	    RX2 = x2;
  	    RY1 = y1;
  	    RY2 = y2;
  	    //startx = -1;
  	    drawme = ourmap;
  	    clabel.show(false);
  	    //ctext.show(false);
	    centerOn.show(false);
  	    repaint();  	    
  	} catch (Exception err) { System.err.println(err); }
   }

   // rubberband the line
   public boolean mouseDrag(Event e, int x, int y) {
      int x1,y1,x2,y2;
	
      while (XMAX < 0 || YMAX < 0) set_minmax();
      
      y = y - YADJ;
      
      if (x > XMAX && XMAX > 0) x = XMAX;
      if (y > YMAX && YMAX > 0) y = YMAX;
      if (x < XMIN) x = XMIN;
      if (y < YMIN) y = YMIN;
      
      //if (newflag) {
          //offscreen_g.drawImage(ourmap,0,0,this);
          //x1 = startx; x2 = lastx;
          //y1 = starty; y2 = lasty;
          //if (startx > lastx) { x1 = lastx; x2 = startx; }
          //if (starty > lasty) { y1 = lasty; y2 = starty; }
          //g.setXORMode(this.getBackground()) ;
          //g.drawLine(startx, starty, lastx, lasty);
          //g.drawRect(x1,y1,x2-x1,y2-y1);
          //g.setPaintMode() ;
      //}	  
      //g.drawLine(startx, starty, x, y) ;
      //if (startx > x) { z = x; x = startx; startx = z; }
      //if (starty > y) { z = y; y = starty; starty = z; }
      
      x1 = startx; x2 = x;
      y1 = starty; y2 = y;
      if (startx > x) { x1 = x; x2 = startx; }
      if (starty > y) { y1 = y; y2 = starty; }
      
      lastx = x ;
      lasty = y ;
      newflag = true;
      repaint();
      return true ;
   }
}