/*
 *  File:  Quadrilateral.java
 *
 *  Quadrilateral class
 *
 *  Copyright:  Northeast Parallel Architectures Center
 *  
 */

import java.awt.Polygon;
import java.awt.Graphics;

// A quadrilateral is a polygon with four sides:
public class Quadrilateral extends Polygon {

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

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

   // Instance methods:
   public void draw( Graphics g ) {
      g.drawPolygon( this );
   }
   public void fill( Graphics g ) {
      g.fillPolygon( this );
   }

}