#ifndef _LINESEGMENT_H
#define _LINESEGMENT_H

#include "Point.h"

class LineSegment {
    private:
        // fields
        Point* p1;
        Point* p2;
        // private initialization method (called by constructors and =)
        void init(int x1, int y1, int x2, int y2);
    
    public:
        // constructors/destructors
        LineSegment(int x1, int y1, int x2, int y2);
        LineSegment(const LineSegment& line);         // copy constructor
        ~LineSegment();                               // destructor
        
        // methods
        int getX1() const;
        int getY1() const;
        int getX2() const;
        int getY2() const;
        double length() const;
        double slope() const;
        void translate(int dx, int dy);
        
        // overloaded assignment = operator (to avoid memory leaks)
        const LineSegment& operator=(const LineSegment& rhs);
};

#endif