vector2D.h

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#ifndef VECTOR2D_H
#define VECTOR2D_H

#include <iostream>

using namespace std;


namespace arkanoid {

    class Vector2D {
    public:

        double x;   
        double y;   

        Vector2D();

        Vector2D(double newX, double newY);

        Vector2D operator+(const Vector2D &other) const;

        void operator=(const Vector2D &other);

        void operator+=(const Vector2D &other);

        Vector2D operator*(double factor) const;

        void operator*=(double factor);

        friend ostream& operator<<(ostream& stream, Vector2D& vector);

    };

}

#endif /* VECTOR2D_H */