anki-3d-engine/src/Math/Vec2.h

#ifndef VEC2_H
#define VEC2_H

#include "Common.h"


namespace M {


/// 2D vector
class Vec2
{
	public:
		/// @name Constructors & distructors
		/// @{
		explicit Vec2();
		explicit Vec2(float x, float y);
		explicit Vec2(float f);
		explicit Vec2(float arr[]);
		         Vec2(const Vec2& b);
		explicit Vec2(const Vec3& v3);
		explicit Vec2(const Vec4& v4);
		/// @}

		/// @name Accessors
		/// @{
		float& x();
		float x() const;
		float& y();
		float y() const;
		float& operator[](uint i);
		float operator[](uint i) const;
		/// @}

		/// @name Operators with same type
		/// @{
		Vec2& operator=(const Vec2& b);
		Vec2 operator+(const Vec2& b) const;
		Vec2& operator+=(const Vec2& b);
		Vec2 operator-(const Vec2& b) const;
		Vec2& operator-=(const Vec2& b);
		Vec2 operator*(const Vec2& b) const;
		Vec2& operator*=(const Vec2& b);
		Vec2 operator/(const Vec2& b) const;
		Vec2& operator/=(const Vec2& b);
		Vec2 operator-() const;
		bool operator==(const Vec2& b) const;
		bool operator!=(const Vec2& b) const;
		/// @}

		/// @name Operators with float
		/// @{
		Vec2 operator+(float f) const;
		Vec2& operator+=(float f);
		Vec2 operator-(float f) const;
		Vec2& operator-=(float f);
		Vec2 operator*(float f) const;
		Vec2& operator*=(float f);
		Vec2 operator/(float f) const;
		Vec2& operator/=(float f);
		/// @}

		/// @name Other
		/// @{
		float getLength() const;
		Vec2 getNormalized() const;
		void normalize();
		float dot(const Vec2& b) const;
		/// @}

	private:
		/// @name Data members
		/// @{
		union
		{
			struct
			{
				float x, y;
			} vec;

			boost::array<float, 2> arr;
		};
		/// @}
};


/// @name Other operators
/// @{
extern Vec2 operator+(float f, const Vec2& v2);
extern Vec2 operator-(float f, const Vec2& v2);
extern Vec2 operator*(float f, const Vec2& v2);
extern Vec2 operator/(float f, const Vec2& v2);
extern std::ostream& operator<<(std::ostream& s, const Vec2& v);
/// @}


} // end namespace


#include "Vec2.inl.h"


#endif