#ifndef _DISPLAY_H
#define _DISPLAY_H

/**
  * Aquarium Lab Series
  * Copyright (C) 2000  Alyce Brady
  *
  * The Display class provides operators that display an Aquarium
  * and a fish or an apvector of fish (instances of the AquaFish 
  * class).  The actual Display behavior depends on the 
  * implementation chosen (text-based and graphics versions are
  * available).
  *
  * Author: Alyce Brady
  *
  * Created: 7/1/99
  *     Modified 2/6/2000   Modified to create a single interface
  *                          for the text-based and graphical 
  *                          versions of the Display class.
  *
  * Acknowledgements:
  *    This class is part of the Aquarium Lab Series, which was inspired
  *    by the AP Marine Biology Case Study found at
  *       http://www.collegeboard.org/ap/computer-science/marine_biology/
  *    This Display class is NOT the same as the Display class in Part II
  *    of the Case Study, but is loosely based on that class.
  *
  * License:
  *    This program is free software; you can redistribute it and/or modify
  *    it under the terms of the GNU General Public License as published by
  *    the Free Software Foundation.
  *
  *    This program is distributed in the hope that it will be useful,
  *    but WITHOUT ANY WARRANTY; without even the implied warranty of
  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  *    GNU General Public License for more details.
  *
  */

//#include "CMUgraphicsLib\CMUgraphics.h"
#include "apvector.h"
#include "aquarium.h"

class AquaFish;

class Display
{
  public:

    // constructors

    Display(Aquarium a);
        // postcondition: ready to display an Aquarium or AquaFish
        //                (text-based display)

/*
    Display(window & w, Aquarium a);
        // postcondition: ready to display an Aquarium or AquaFish
        //                (graphical display)
*/

    // modifier functions (modifiers because they change the state of the output)

    void ShowAquarium();
        // postcondition: aquarium passed to constructor has been displayed

    void Show(AquaFish f);
        // postcondition: f displayed

    void Show(apvector<AquaFish> school);
        // postcondition: all fish in school displayed

  private:

    // private data member used for text-based & graphical display
    Aquarium theAquarium;     // the aquarium containing fish

    // private data members used for graphical display only
/*    
    window & myWindow;        // the graphical display window (refers
                              //    to actual window in main function)
    int      aquaLeft;        // x-coordinate of aquarium left wall
    int      aquaTop;         // y-coordinate of aquarium top
    int      widthScale;      // how many pixels per unit width
    int      heightScale;     // how many pixels per unit height
*/    
};

#endif