#include <iostream>            
#include <fstream>             
using namespace std;

#include "point.h"
#include "dotToDot.h"
#include "myio.h"

dotToDot shift(const dotToDot&);
void print(const dotToDot&);

int main( )
{
   ifstream fin;               // for the input file
   cout << "Enter the name of the file of points -- ";
   openIn(fin);                // ask user for file name and open it
   
   dotToDot pic1, pic2;
   point pt;

   while ( true ) {
      fin >> pt;               // try to read a point from the file
      if (fin.eof()) break;    // found end of file so outta here
      pic1.append(pt);          // insert it into the diagram
   }
   fin.close();

   // test the assignment operator
   pic2 = shift(pic1);
   
   // remove the last two points
   pic2.remove();
   pic2.remove();

   pic1.clear();   // remove all dots from pic1

   // print both pictures
   cout << "Picture 1 is " << endl;
   print(pic1);
   cout << endl;
   cout << "Picture 2 is " << endl;
   print(pic2);
   cout << endl;
   
   return 0;
}


// this will test the copy constructor and the destructor
dotToDot shift(const dotToDot& pic) {

   dotToDot copy(pic);   // make a copy of the pic; test the copy constructor

   // shift the copy to the left  3.5 and down -2.4
   for (int i = 0; i < pic.size(); i++)
      copy[i].shift(3.5,-2.4);  // this requires you to overload the [] operator
                                // and since copy is not const, will call 
                                // the l-value version
   
   return copy;   // this will also use the copy constructor
   
         // note: that since copy is declared locally, it is out of scope
         //       after the function exits so the destructor is called
         //       so this will test the destructor
}


// print the dotToDot puzzle
void print(const dotToDot& pic) {

   int numDots = pic.size();     // test the size function
   
   if (numDots == 0)
      cout << "No Picture!!" << endl;
   else
      for (int i = 0; i < numDots; i++)
	 cout << pic[i] << endl;        // since pic is const, this will call
                                        // the r-value version of [] overload
}