//-------------------------------
//  File   :  Point.H
//  Author : DL Frey
//  Date   : 2/21/03
//  Section: 1234
//  SSN    : xxx-xx-1234
//  Project: CMSC 202 Spring 2003, Project 2
//  Description:
//       This file is the interface for a generic
// Point class encapsulating the X- and Y- coordinates
// of a Point.  It was developed for project 2,
// but can be reused in any project
//       defines x- and y-coordinates as integers,
// but no implementation depends on it
//-------------------------------------------

#ifndef POINT_H
#define POINT_H

class Point
{
   public:
      // ------------------------------------
      // Method: Constructor(s)
      // PreConditions: none
      // PostConditions:
      //  x- and y- coordinates set to values
      // passed in as params
      //-------------------------------------
      Point ( int x = 0, int y = 0);

      // ------------------------------------------
      // Method: SetX() - mutator for x-coordinate
      // PreConditions: none
      // PostConditions:
      //  changes the value of the x-coordinate to
      // value supplied by the user
      //-------------------------------------
      void SetX (int x);

      // ------------------------------------------
      // Method: GetX() - accessor for x-coordinate
      // PreConditions: none
      // PostConditions:
      //  returns integer value of x-coordinate
      //-------------------------------------
      int GetX ( void ) const;

      // ------------------------------------------
      // Method: SetY() - mutator for y-coordinate
      // PreConditions: none
      // PostConditions:
      //  changes the value of the y-coordinate to
      // value supplied by the user
      //-------------------------------------
      void SetY (int y);

      // ------------------------------------------
      // Method: GetY() - accessor for y-coordinate
      // PreConditions: none
      // PostConditions:
      //  returns integer value of y-coordinate
      //-------------------------------------
      int GetY ( void ) const;

   private:
      int m_XCoordinate;
      int m_YCoordinate;

};

//---------------------------------------------
// generic distance calculations for two points
// in the coordinate plane
//---------------------------------------------

// ------------------------------------------------
// Function: VerticalDistance
// PreConditions: none
// PostConditions:
//   returns the absolute value of the difference
// of the y-coordinates of the user supplied Points
//-------------------------------------------------
int VerticalDistance (const Point& point1, const Point& point2);

// ------------------------------------------------
// Function: HorizontalDistance
// PreConditions: none
// PostConditions:
//   returns the absolute value of the difference
// of the x-coordinates of the user supplied Points
//-------------------------------------------------
int HorizontalDistance (const Point& point1, const Point& point2);

// ------------------------------------------------
// Function: Distance
// PreConditions: none
// PostConditions:
//   returns the straight-line distance between
// the user supplied Points
//-------------------------------------------------
double Distance (const Point& point1, const Point& point2);

#endif