class osg::Vec2

General purpose float pair, uses include representation of texture coordinates.

Public Fields

float _v[2]

Public Methods

Vec2()

Vec2(float x, float y)

inline const bool operator == (const Vec2& v) const

inline const bool operator != (const Vec2& v) const

inline const bool operator < (const Vec2& v) const

inline float* ptr()

inline const float* ptr() const

inline void set( float x, float y )

inline float& operator [] (int i)

inline const float operator [] (int i) const

inline float& x()

inline float& y()

inline const float x() const

inline const float y() const

inline const bool valid() const

inline const bool isNaN() const

inline const bool isInfinite() const

inline const float operator * (const Vec2& rhs) const

dot product

inline const Vec2 operator * (const float& rhs) const

multiply by scalar

inline Vec2& operator *= (const float& rhs)

unary multiply by scalar

inline const Vec2 operator / (const float& rhs) const

divide by scalar

inline Vec2& operator /= (const float& rhs)

unary divide by scalar

inline const Vec2 operator + (const Vec2& rhs) const

binary vector add

inline Vec2& operator += (const Vec2& rhs)

unary vector add.

inline const Vec2 operator - (const Vec2& rhs) const

binary vector subtract

inline Vec2& operator -= (const Vec2& rhs)

unary vector subtract

inline const Vec2 operator - () const

negation operator.

inline const float length() const

Length of the vector = sqrt( vec .

inline const float length2( void ) const

Length squared of the vector = vec .

inline const float normalize()

normalize the vector so that it has length unity returns the previous length of the vector

Documentation

General purpose float pair, uses include representation of texture coordinates. No support yet added for float * Vec2 - is it necessary? Need to define a non-member non-friend operator* etc. BTW: Vec2 * float is okay

Vec2()

Vec2(float x, float y)

float _v[2]

inline const bool operator == (const Vec2& v) const

inline const bool operator != (const Vec2& v) const

inline const bool operator < (const Vec2& v) const

inline float* ptr()

inline const float* ptr() const

inline void set( float x, float y )

inline float& operator [] (int i)

inline const float operator [] (int i) const

inline float& x()

inline float& y()

inline const float x() const

inline const float y() const

inline const bool valid() const

inline const bool isNaN() const

inline const bool isInfinite() const

inline const float operator * (const Vec2& rhs) const

dot product

inline const Vec2 operator * (const float& rhs) const

multiply by scalar

inline Vec2& operator *= (const float& rhs)

unary multiply by scalar

inline const Vec2 operator / (const float& rhs) const

divide by scalar

inline Vec2& operator /= (const float& rhs)

unary divide by scalar

inline const Vec2 operator + (const Vec2& rhs) const

binary vector add

inline Vec2& operator += (const Vec2& rhs)

unary vector add. Slightly more efficient because no temporary intermediate object.

inline const Vec2 operator - (const Vec2& rhs) const

binary vector subtract

inline Vec2& operator -= (const Vec2& rhs)

unary vector subtract

inline const Vec2 operator - () const

negation operator. Returns the negative of the Vec2

inline const float length() const

Length of the vector = sqrt( vec . vec )

inline const float length2( void ) const

Length squared of the vector = vec . vec

inline const float normalize()

normalize the vector so that it has length unity returns the previous length of the vector

This class has no child classes.

Friends:

inline std::ostream& operator << (std::ostream& output, const Vec2& vec)

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