// ==========================================================================
// $Id: vector2d.cpp,v 1.6 2017/09/23 00:53:23 jlang Exp $
// CSI2372 example Code for lecture 4
// ==========================================================================
// (C)opyright:
//
//   Jochen Lang
//   SITE, University of Ottawa
//   800 King Edward Ave.
//   Ottawa, On., K1N 6N5
//   Canada. 
//   http://www.site.uottawa.ca
// 
// Creator: jlang (Jochen Lang)
// Email:   jlang@site.uottawa.ca
// ==========================================================================
// $Log: vector2d.cpp,v $
// Revision 1.6  2017/09/23 00:53:23  jlang
// Introduced references and const again for this version
//
// Revision 1.5  2017/09/13 16:21:06  jlang
// Removed arrays, references and use of const.
//
// Revision 1.4  2014/10/22 20:29:25  jlang
// Minor changes.
//
// Revision 1.3  2014/10/04 20:32:32  jlang
// Minor change for better illustration.
//
// Revision 1.2  2014/10/01 18:04:03  jlang
// Updated vector2d example
//
// Revision 1.1  2011/10/16 02:51:42  jlang
// Added files for lecture 06
//
// ==========================================================================
#include <iostream>
#include <cmath>
#include "point2d.h"


using std::cout;
using std::endl;

// class Vector2D : protected Point2D {
class Vector2D : public Point2D {
  double d_length;
public:
  // Vector2D(double _x=0.0, double _y=0.0) : d_x(_x), d_y(_y) { 
  Vector2D(double _x=0.0, double _y=0.0) : Point2D(_x,_y) { 
    d_length = std::sqrt(dot(*this));
    print();
  }

  // Not really needed here - could be:
  // Vector(const Vector2D& _oVect ) = default;
  Vector2D(const Vector2D& _oVect ) : Point2D(_oVect){
    std::cout << "Must call cctor of base!" << std::endl;
  } 

  double dot( const Vector2D& _oVect ) const {
    return d_x * _oVect.d_x + d_y * _oVect.d_y;
  }
  
};


int main() {
  Vector2D v2DA( 0.5, 2.0 );
  Vector2D v2DB( 2.0, 1.0 );
  Point2D p2D( 1.0, 0.5 );

  p2D.print();
  v2DA.print();
  cout << endl;
  p2D = v2DA.min( p2D );
  p2D.print();
  cout << endl;
  p2D = v2DA.min( v2DB );
  p2D.print();
  cout << endl;

  return 0;
}