/*!	\file PolygonList.h
*	\brief PolygonList Abstract Base Class - Top of Inheritance Hierarchy
*/
#ifndef POLYGONLIST_H
#define POLYGONLIST_H
#include <fstream>
#include <string>
using namespace std;

/*!	
*	\class PolygonList
*	\brief PolygonList Abstract Base Class -Specifies functions subclasses must implement
*
*	The PolygonList is an abstract class, this class specifies the functions for the different
*	container classes to use
*
*/
class PolygonList {
public:

/*!
*	\param filename filename is the name of the file that will be opened
*	
*	readIntoList opens a file and reads it into the different containers
*/
  virtual void readIntoList(string filename)=0;

/*!
*	The printIteratively function uses indexes (if available) to print the contents of the
*	array.
*/
  virtual void printIteratively()=0;


/*!
*	The printPtr function uses pointers to data in the array to display the information 
*	to the user
*/
  virtual void printPtr() {}

/*!
*	averageArea computes the total area of all objects in the array and divides by the total number.
*/
  virtual double averageArea()=0;
    
};
  
#endif