Vector2d.h

#ifndef HB_VECTOR_2D_H
#define HB_VECTOR_2D_H
#include <cmath>
#include <string>
#include <cstdlib>

namespace hb
{
    class Vector2d
    {
    public:
        double x; 
        double y; 

        Vector2d(): x(0), y(0){};
        Vector2d(double x, double y): x(x), y(y){};
        Vector2d(const Vector2d& v): x(v.x), y(v.y){};

        double module() const
        {return sqrt(pow(x, 2) + pow(y, 2));}

        Vector2d normalized() const
        {
            Vector2d v = *this;
            double module = this->module();
            if (module != 0.)
            {
                v.x /= module;
                v.y /= module;
            }
            return v;
        }
    };
    
}

hb::Vector2d operator -(const hb::Vector2d& right);
hb::Vector2d& operator +=(hb::Vector2d& left, const hb::Vector2d& right);
hb::Vector2d& operator -=(hb::Vector2d& left, const hb::Vector2d& right);
hb::Vector2d operator +(const hb::Vector2d& left, const hb::Vector2d& right);
hb::Vector2d operator -(const hb::Vector2d& left, const hb::Vector2d& right);
hb::Vector2d operator *(const hb::Vector2d& left, double right);
hb::Vector2d operator *(double left, const hb::Vector2d& right);
hb::Vector2d& operator *=(hb::Vector2d& left, double right);
hb::Vector2d operator /(const hb::Vector2d& left, double right);
hb::Vector2d& operator /=(hb::Vector2d& left, double right);
bool operator ==(const hb::Vector2d& left, const hb::Vector2d& right);
bool operator !=(const hb::Vector2d& left, const hb::Vector2d& right);
#endif