Robust/src/Interface/Imap.java

   1 package Interface;
   2 import java.net.*;
   3 import java.io.*;
   4 import java.util.*;
   5
   6 class Imap {
   7     private Rectangle[] rectangles;
   8     private Point[] points;
   9     long THRESHOLD=400;
  10
  11     public Imap(String filename) {
  12         FileReader fr=null;
  13         try {
  14             fr=new FileReader(filename);
  15             parseFile(fr);
  16             fr.close();
  17         } catch (IOException e) {
  18             System.out.println(e);
  19             System.exit(-1);
  20         }
  21     }
  22     static class Rectangle {
  23         String label;
  24         int x1,y1,x2,y2;
  25         public Rectangle(String label, int x1,int y1, int x2, int y2) {
  26             this.label=label;
  27             this.x1=x1;
  28             this.y1=y1;
  29             this.x2=x2;
  30             this.y2=y2;
  31         }
  32     }
  33
  34     String parseclick(int x,int y) {
  35         System.out.println(x+","+y);
  36         for(int i=0;i<rectangles.length;i++) {
  37             Rectangle r=rectangles[i];
  38             if ((r.x1<=x)&&(r.y1>=y)&&
  39                 (r.x2>=x)&&(r.y2<=y))
  40                 return r.label;
  41         }
  42         long mindistance=Long.MAX_VALUE;
  43         int minindex=-1;
  44         for(int i=0;i<points.length;i++) {
  45             Point p=points[i];
  46             long dx=p.x-x;
  47             long dy=p.y-y;
  48             if ((dx*dx+dy*dy)<mindistance) {
  49                 mindistance=dx*dx+dy*dy;
  50                 minindex=i;
  51             }
  52         }
  53         if (mindistance>THRESHOLD)
  54             return null;
  55         else
  56             return points[minindex].label;
  57     }
  58
  59     static class Point {
  60         String label;
  61         int x,y;
  62         public Point(String label, int x,int y) {
  63             this.label=label;
  64             this.x=x;
  65             this.y=y;
  66         }
  67     }
  68
  69     void parseFile(FileReader fr) {
  70         int firstchar=0;
  71         ArrayList rectangles=new ArrayList();
  72         ArrayList points=new ArrayList();
  73         while(true) {
  74             try {
  75                 firstchar=fr.read();
  76             } catch (Exception e) {
  77                 e.printStackTrace();
  78                 System.exit(-1);
  79             }
  80             /* EOF?*/
  81             if (firstchar==-1)
  82                 break;
  83             switch(firstchar) {
  84                 case'b':
  85                     case'#':
  86                     while(firstchar!='\n') {
  87                         try {
  88                             firstchar=fr.read();
  89                         } catch (IOException e) {
  90                             e.printStackTrace();
  91                             System.exit(-1);
  92                         }
  93                     }
  94                 break;
  95                 case'r':
  96                     {
  97                         nexttoken(fr,false);
  98                         String label=nexttoken(fr,false);
  99                         String x1=nexttoken(fr,true);
 100                         String y1=nexttoken(fr,true);
 101                         String x2=nexttoken(fr,true);
 102                         String y2=nexttoken(fr,true);
 103                         Rectangle r=new Rectangle(label,Integer.parseInt(x1),Integer.parseInt(y1),
 104                                                   Integer.parseInt(x2),Integer.parseInt(y2));
 105                         rectangles.add(r);
 106                     }
 107                 break;
 108                 case'p':
 109                     {
 110                         nexttoken(fr,false);
 111                         String label=nexttoken(fr,false);
 112                         String x=nexttoken(fr,true);
 113                         String y=nexttoken(fr,true);
 114                         Point p=new Point(label,Integer.parseInt(x),Integer.parseInt(y));
 115                         points.add(p);
 116                     }
 117                 break;
 118             }
 119         }
 120         this.rectangles=(Rectangle[]) rectangles.toArray(new Rectangle[rectangles.size()]);
 121         this.points=(Point[]) points.toArray(new Point[points.size()]);
 122     }
 123
 124     String nexttoken(java.io.InputStreamReader isr,boolean commas) {
 125         String string="";
 126         int c=0;
 127         boolean looped=false;
 128         while(true) {
 129             try {
 130                 c=isr.read();
 131             } catch (IOException e) {
 132                 e.printStackTrace();
 133                 System.exit(-1);
 134             }
 135             if ((c==' ')||(c=='\n')||(commas&&c==',')) {
 136                 if (!looped) {
 137                     looped=true;
 138                     continue;
 139                 }
 140                 return string;
 141             }
 142             string=string+new String(new char[]{(char)c});
 143             looped=true;
 144         }
 145     }
 146
 147 }
 148