import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class OntoPanel extends JPanel{
    OntoData od;
    double wcx, wcy, pcx, pcy, koef=1;
    double freeBorder=30;
    public void paintComponent(Graphics g0){
     try{
       Graphics2D g=(Graphics2D)g0;
       g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
       pcx=getWidth()/2;
       pcy=getHeight()/2;
       //calculateKoef();
       FontMetrics fm=g.getFontMetrics();
       for(int j=0; j<od.coordinates.length; j++){
          int sw=fm.stringWidth(od.names[j]);
          g.drawString(od.names[j], px(od.coordinates[j][0])-sw/2, py(od.coordinates[j][1]));
       }
     }catch(Exception e){
        e.printStackTrace();
     }  
    }
    void calculateKoef(){
      double[] koefm=new double[od.coordinates[0].length];
      double tkoefx=0, tkoefy=0;
      for(int i=0; i<od.coordinates[0].length; i++){
         double min=od.coordinates[0][i];
         double max=min;
         for(int j=0; j<od.coordinates.length; j++){
            if(od.coordinates[j][i]<min){min=od.coordinates[j][i];}
            if(od.coordinates[j][i]>max){max=od.coordinates[j][i];
            }
         }
//         min=Math.abs(min);
         if(i==0){
            wcx=(max+min)/2;
            tkoefx=(getWidth()/2-freeBorder)/(max-wcx);
         }
         if(i==1){
            wcy=(max+min)/2;
            tkoefy=(getHeight()/2-freeBorder)/(max-wcy);
         }
      }
      koef=Math.min(tkoefx, tkoefy);
    }
         
    int px(double wx){
       return (int)(pcx+(wx-wcx)*koef);
    }
    int py(double wy){
       return (int)(pcy-(wy-wcy)*koef);
    }
    double wx(int px){
       return wcx+(px-pcx)/koef;
    }
    double wy(int py){
       return wcy+(pcy-py)/koef;
    }
    int getWordNr(int px, int py){
       int r=20;
       for(int j=0; j<od.coordinates.length; j++){
         if(Math.abs(px(od.coordinates[j][0])-px)<r && Math.abs(py(od.coordinates[j][1])-py)<r){
           return j;
         }
       }
       return -1;
    }
}