/*!	\file PolygonArrayList.cpp 
*	\brief PolygonList subclass implementation
*
*	\class PolygonArrayList 
*	A subclass of the polygon list class, this subclass changes the
*	abstract class to utilize a single STL array container to house, manipulate, and display polygons. 
*/
#include <fstream>
#include <iostream>
#include <iomanip>
#include "PolygonArrayList.h"
using namespace std;

/*!
*	The default constructor initalizes the numShapes datamember to zero
*/
  PolygonArrayList::PolygonArrayList()
  { numShapes=0; }

/*!
*	the read into list function takes a filename as a string and reads in up to
*	ten polygon attributes from the file into the array.
*/
  void PolygonArrayList::readIntoList(string filename)
  { ifstream source(filename.c_str());
    int sides;
    double length;
    while (numShapes < 10 && source >> sides >> length)  {
      Polygon P(sides,length);
      TheShapes[numShapes++]=P;
    }
    source.close();
    source.clear();
  }

/*!
*	\fn
*	The printIteratively function uses the array indexes to print the contents of the
*	array.
*/
void PolygonArrayList::printIteratively()
{ 
	cout<<"---------------------------------"<<endl;
	cout<<"|Print   Array  Iterative       |"<<endl;
	cout<<"|Shape         Area   Perimeter |"<<endl;  
	cout<<"---------------------------------"<<endl;
	for(int i=0; i<numShapes; i++) 
	{
		cout << setw(8) << TheShapes[i];
		printf("%10.2f %10.2f\n",TheShapes[i].getArea(),TheShapes[i].getPerimeter());
	}
	cout<<"---------------------------------"<<endl;
	cout << "Average Area: " << averageArea() << endl;
	cout<<"\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\/////////////////\n"<<endl;
}

/*!
*	averageArea computes the total area of all objects in the array and divides by the total number.
*/
  double PolygonArrayList::averageArea()
  { double sum=0;
    for (int i=0;i<numShapes;i++)
      sum+=TheShapes[i].getArea();
    return(sum/numShapes);
  }