Vector2D.hpp

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#pragma once
#include <iostream>
#include <stdlib.h>
template< typename T >
class Vector2D_t {
public:
    T x;        
    T y;        
 
public:
    Vector2D_t( const T& xx, const T& yy ): x(xx), y(yy){}
 
    Vector2D_t(): x(0), y(0){}
 
    Vector2D_t( const Vector2D_t& vec ): x(vec.x), y(vec.y){}
 
    ~Vector2D_t() = default;
 
public:
    inline Vector2D_t& operator += ( const Vector2D_t& vec )
    { this->x += vec.x;   this->y += vec.y;     return *this; }
 
    inline Vector2D_t& operator -= ( const Vector2D_t& vec )
    { this->x -= vec.x;   this->y -= vec.y;     return *this;  }
 
public:
    inline Vector2D_t operator + ( const Vector2D_t& vec ) const {
        Vector2D_t tmp = vec;
        tmp += *this;
        return tmp;
    }
 
    inline Vector2D_t operator - ( const Vector2D_t& vec ) const {
        Vector2D_t tmp = *this;
        tmp -= vec;
        return tmp;
    }
 
    inline bool operator == ( const Vector2D_t& vec ) const
    { return (vec.x == this->x && vec.y == this->y ); }
 
public:
    unsigned int area() const
    { return x*y; }
 
    inline bool adj( const Vector2D_t& vec ) const
    { return abs(this->x-vec.x)<2 && abs(this->y-vec.y)<2; }
 
};
 
 
template< typename T >
std::ostream& operator << ( std::ostream& strm, const Vector2D_t<T>& vec ){
    strm << "[" << vec.x << "; " << vec.y << "]";
    return strm;
}
 
 
 
typedef Vector2D_t< short int > Vector2D;