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#ifndef _VECTOR_H_
#define _VECTOR_H_

class Vector2 {
	public:
		union {
			float x, r;
		};
		union {
			float y, g;
		};
		
		Vector2();
		Vector2(float p1, float p2);
		Vector2(const Vector2& v);
		
		Vector2& operator=(const Vector2& v);
		Vector2& operator+=(const Vector2& v);
		Vector2& operator+(const Vector2& v);
		Vector2& operator-=(const Vector2& v);
		Vector2& operator-(const Vector2& v);
};

class Vector3 : public Vector2 {
	public:
		union {
			float z, b;
		};
		
		Vector3();
		Vector3(float p1, float p2, float p3);
		Vector3(const Vector3& v);
		
		Vector3& operator=(const Vector3& v);
		Vector3& operator+=(const Vector3& v);
		Vector3& operator+(const Vector3& v);
		Vector3& operator-=(const Vector3& v);
		Vector3& operator-(const Vector3& v);
};

class Vector4 : public Vector3 {
	public:
		union {
			float w, a;
		};

		Vector4();
		Vector4(float p1, float p2, float p3, float p4);
		Vector4(const Vector4& v);

		Vector4& operator=(const Vector4& v);
		Vector4& operator+=(const Vector4& v);
		Vector4& operator+(const Vector4& v);
		Vector4& operator-=(const Vector4& v);
		Vector4& operator-(const Vector4& v);
};

#endif