#include <iostream>
#include <string>
#include <iterator>
#include <vector>
#include <gl/glut.h>
#include <windows.h>

using namespace std;

class vertex
{
  public:
	float x, y, z;

	vertex(float xCoord = 0.0, float yCoord = 0.0, float zCoord = 0.0)
	{
		x = xCoord;
		y = yCoord;
		z = zCoord;
	}
	void printVertex()
	{
	    cout << x << " " << y << " " << z << "\n";
	}

};

class polygon
{
  public:
	  int a, b, c;

  polygon(int aVert = 0, int bVert = 0, int cVert = 0)
  {
	  a = aVert;
	  b = bVert;
	  c = cVert;
  }

  void printPolygon()
	{
	    cout << a << " " << b << " " << c << "\n";
	}

};

class model
{
  public:
	  vector<vertex> Vertex;
	  vector<polygon> Polygon;
	  vector<vertex>::iterator vIterator;
	  vector<polygon>::iterator pIterator;
 /* 
  void printModel()
  {
	  cout << "Verticies:\n";
	  for(vIterator = Vertex.begin(); vIterator != Vertex.end(); vIterator++)
	  {
		  cout << *vIterator << "\n";
	  }
	  cout << "Indicies of verticies in polygons:\n";
	  for(pIterator = Polygon.begin(); pIterator != Polygon.end(); pIterator++)
	  {
		  cout << *pIterator << "\n";
	  }
  }
*/
};

void main()
{
	float x = 0.0;
	float y = 0.0;
	float z = 0.0;
	char blar = 'y';
	while(blar != 'n')
	{
		cout << "enter an x: ";
		cin >> x;
		cout << "enter a y: ";
		cin >> y;
		cout << "enter a z: ";
		cin >> z;

		vertex v = vertex(x, y, z);
		vertex u = vertex(y, z, x);
		vertex w = vertex(z, x, y);

		polygon p = polygon(0,2,1);

		model m;
		m.Vertex.push_back(v);
		m.Vertex.push_back(u);
		m.Vertex.push_back(w);

		//polygon 0 has verts v0, v2, v1 in counterclockwise order
		m.Polygon.at(0) = p; //CRASHES HERE
		//m.Polygon[0].b = m.Vertex[2];
		//m.Polygon[0].c = m.Vertex[1];

		cout << "Your vertex: ";
		//m.printModel();
		cout << "type n to quit: ";
		cin >> blar;
	}
}

 m.Polygon.push_back (p);
// or this way.
m.Polygon[0] = p;