/*
 *  File:  HexagonTest.java
 *
 *  Draw a regular hexagon
 *
 *  Copyright:  Northeast Parallel Architectures Center
 *  
 */

import java.applet.Applet;
import java.awt.Graphics;
import java.awt.Polygon;
import java.awt.Color;
import java.awt.Point;

public class HexagonTest extends Applet {

   // create a reference to a hexagon:
   private Hexagon hexagon;
   
   public void init() {
   
      // instantiate a hexagon like this...
      hexagon = new Hexagon(  75,  25, 175,  25, 225, 112, 
                             175, 199,  75, 199,  25, 112  );
      // ...or like this:
      hexagon = new Hexagon();
      // add points to make a regular hexagon:
      hexagon.addPoint(  75,  25 );
      hexagon.addPoint( 175,  25 );
      hexagon.addPoint( 225, 112 );
      hexagon.addPoint( 175, 199 );
      hexagon.addPoint(  75, 199 );
      hexagon.addPoint(  25, 112 );

   }
   
   public void paint( Graphics g ) {

      // fill the hexagon:
      g.setColor( Color.red );
      hexagon.fill( g );

   }
   
}

// A hexagon is a polygon with six sides:
class Hexagon extends MyPolygon {

   // Hexagon constructor #1:
   public Hexagon() {
      // invoke the constructor of the superclass MyPolygon:
      super();
   }

   // Hexagon constructor #2:
   public Hexagon( int x1, int y1, 
                   int x2, int y2, 
                   int x3, int y3, 
                   int x4, int y4,
                   int x5, int y5, 
                   int x6, int y6  ) {
 
      // invoke the constructor of the superclass MyPolygon:
      super();
      
      // the 'this' reference is optional:
      this.addPoint( x1, y1 );
      this.addPoint( x2, y2 );
      this.addPoint( x3, y3 );
      this.addPoint( x4, y4 );
      this.addPoint( x5, y5 );
      this.addPoint( x6, y6 );
 
   }

}

class MyPolygon extends Polygon {

   // Instance methods:
   public void draw( Graphics g ) {
      g.drawPolygon( this );
   }
   public void fill( Graphics g ) {
      g.fillPolygon( this );
   }
   
   // Overload Polygon.addPoint( int, int ):
   public void addPoint( Point p ) {
      super.addPoint( p.x, p.y );
   }
   
}