// Copyright (c) 2007, Rodrigo Braz Monteiro
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// $Id$

/// @file vector2d.h
/// @see vector2d.cpp
/// @ingroup utility visual_ts
///




/// DOCME
/// @class Vector2D
/// @brief DOCME
///
/// DOCME
class Vector2D {
public:

	/// DOCME

	/// DOCME
	float x,y;

	Vector2D ();
	Vector2D (float _x,float _y);
	Vector2D (const Vector2D &vec);

	void operator = (const Vector2D param);
	bool operator == (const Vector2D param) const;
	bool operator != (const Vector2D param) const;

	Vector2D operator - () const;
	Vector2D operator + (const Vector2D param) const;
	Vector2D operator - (const Vector2D param) const;
	Vector2D operator * (float param) const;
	Vector2D operator / (float param) const;

	Vector2D operator += (const Vector2D param);
	Vector2D operator -= (const Vector2D param);
	Vector2D operator *= (float param);
	Vector2D operator /= (float param);

	Vector2D Unit () const;
	float Cross (const Vector2D param) const;
	float Dot (const Vector2D param) const;

	float Len () const;

	/// @brief DOCME
	/// @return 
	///
	float Length () const { return Len(); }
	float SquareLen () const;

	/// @brief DOCME
	///
	float SquareLength () const { return SquareLen(); }
};


////////////////////
// Global operators
Vector2D operator * (float f,const Vector2D &v);
Vector2D operator / (float f,const Vector2D &v);