Vector2.h

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#ifndef __Vector2_H__
#define __Vector2_H__

#include <cmath>

namespace EdgeDetection
{
        // Represents a vector in two-dimensional space.
        class Vector2
        {
                private: double x;
                private: double y;

                public: double GetX() { return x; }
                public: double GetY() { return y; }
                public: double GetLength() { return sqrt(x * x + y * y); }

                public: Vector2()
                {
                        this->x = 0;
                        this->y = 0;
                }
                public: Vector2(double angle)
                {
                        this->x = cos(angle);
                        this->y = sin(angle);
                }
                public: Vector2(double x, double y)
                {
                        this->x = x;
                        this->y = y;
                }
                public: ~Vector2() { }
        
                public: static Vector2 Add(Vector2 vector1, Vector2 vector2) { return Vector2(vector1.x + vector2.x, vector1.y + vector2.y); }
                public: static Vector2 Subtract(Vector2 vector1, Vector2 vector2) { return Vector2(vector1.x - vector2.x, vector1.y - vector2.y); }
                public: static Vector2 Multiply(Vector2 vector, double factor) { return Vector2(vector.x * factor, vector.y * factor); }
                public: static Vector2 Multiply(double factor, Vector2 vector) { return Vector2(factor * vector.x, factor * vector.y); }
                public: static Vector2 Negate(Vector2 vector) { return Multiply(vector, -1); }
                public: static bool Equals(Vector2 vector1, Vector2 vector2) { return vector1.x == vector2.x && vector1.y == vector2.y; }
        };
};

#endif