SbVec2f

NAME

SbVec2f – 2D vector class

INHERITS FROM

SbVec2f

SYNOPSIS

#include <Inventor/SbLinear.h>

Methods from class SbVec2f:

SbVec2f()

SbVec2f(const float v[2])

SbVec2f(float x, float y)

float dot(const SbVec2f &v) const

SbBool equals(const SbVec2f v, float tolerance) const

const float * getValue() const

void getValue(float &x, float &y) const

float length() const

void negate()

float normalize()

SbVec2f & setValue(const float v[2])

SbVec2f & setValue(float x, float y)

float & operator [](int i)

const float & operator [](int i)

SbVec2f & operator *=(float d)

SbVec2f & operator /=(float d)

SbVec2f & operator +=(const SbVec2f &u)

SbVec2f & operator -=(const SbVec2f &u)

SbVec2f operator -() const

SbVec2f operator *(const SbVec2f &v, float d)

SbVec2f operator *(float d, const SbVec2f &v)

SbVec2f operator /(const SbVec2f &v, float d)

SbVec2f operator +(const SbVec2f &v1, const SbVec2f &v2)

SbVec2f operator -(const SbVec2f &v1, const SbVec2f &v2)

int operator ==(const SbVec2f &v1, const SbVec2f &v2)

int operator !=(const SbVec2f &v1, const SbVec2f &v2)

DESCRIPTION

2D vector class used to store 2D vectors and points. This class is used throughout Inventor for arguments and return values.

METHODS

SbVec2f()

Default constructor.

SbVec2f(const float v[2])

SbVec2f(float x, float y)

Constructor given vector components.

float dot(const SbVec2f &v) const

Returns dot (inner) product of vector and another vector.

SbBool equals(const SbVec2f v, float tolerance) const

Equality comparison within given tolerance –the square of the length of the maximum distance between the two vectors.

const float * getValue() const

void getValue(float &x, float &y) const

Returns vector components.

float length() const

Returns geometric length of vector.

void negate()

Negates each component of vector in place.

float normalize()

Changes vector to be unit length.

SbVec2f & setValue(const float v[2])

SbVec2f & setValue(float x, float y)

Sets the vector components.

float & operator [](int i)

const float & operator [](int i)

Accesses indexed component of vector.

SbVec2f & operator *=(float d)

SbVec2f & operator /=(float d)

Component-wise scalar multiplication and division operators.

SbVec2f & operator +=(const SbVec2f &u)

SbVec2f & operator -=(const SbVec2f &u)

Component-wise vector addition and subtraction operators.

SbVec2f operator -() const

Nondestructive unary negation –returns a new vector.