segment.h

#pragma once
 
#include "software/geom/point.h"
#include "software/geom/vector.h"
 
class Segment final
{
   public:
    Segment();
 
    Segment(const Point& start, const Point& end);
 
    void setStart(Point o);
 
    const Point& getStart() const;
 
    void setEnd(Point o);
 
    const Point& getEnd() const;
 
    double length() const;
 
    double lengthSquared() const;
 
    Segment reverse() const;
 
    Vector toVector() const;
 
    Point midPoint() const;
 
    bool operator==(const Segment& other) const;
 
   private:
    Point start;
    Point end;
};
 
Segment operator+(const Segment& segment, const Vector& vector);
Segment operator+(const Vector& vector, const Segment& segment);
 
Segment operator-(const Segment& segment, const Vector& vector);
 
template <>
struct std::hash<Segment>
{
    std::size_t operator()(const Segment& seg) const
    {
        std::size_t const h1(std::hash<Point>()(seg.getStart()));
        std::size_t const h2(std::hash<Point>()(seg.getEnd()));
        return h1 ^ (h2 << 1);
    }
};