NAME¶

SbVec4f — 4D vector class

INHERITS FROM¶

SbVec4f

SYNOPSIS¶

#include <Inventor/SbLinear.h>

Methods from class SbVec4f:

SbVec4f()

SbVec4f(const float v[4])

SbVec4f(float x, float y, float z, float w)

float dot(const SbVec4f &v) const

SbBool equals(const SbVec4f v, float tolerance) const

void getReal(SbVec3f &v) const

const float * getValue() const

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

float length() const

void negate()

normalize()

SbVec4f & setValue(const float v[4])

SbVec4f & setValue(float x, float y, float z, float w)

float & operator [](int i)

const float & operator [](int i)

SbVec4f & operator *=(float d)

SbVec4f & operator /=(float d)

SbVec4f & operator +=(const SbVec4f &u)

SbVec4f & operator -=(const SbVec4f &u)

SbVec4f operator -() const

SbVec4f operator *(const SbVec4f &v, float d)

SbVec4f operator *(float d, const SbVec4f &v)

SbVec4f operator /(const SbVec4f &v, float d)

SbVec4f operator +(const SbVec4f &v1, const SbVec4f &v2)

SbVec4f operator -(const SbVec4f &v1, const SbVec4f &v2)

int operator ==(const SbVec4f &v1, const SbVec4f &v2)

int operator !=(const SbVec4f &v1, const SbVec4f &v2)

DESCRIPTION¶

4D vector class used to store homogeneous coordinates. This class is used in Inventor for arguments and return values.

METHODS¶

SbVec4f()

Default constructor.

SbVec4f(const float v[4])

SbVec4f(float x, float y, float z, float w)

Constructor given vector components.

float dot(const SbVec4f &v) const

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

SbBool equals(const SbVec4f v, float tolerance) const

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

void getReal(SbVec3f &v) const

Returns the real portion of the vector by dividing by the fourth value.

const float * getValue() const

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

Returns vector components.

float length() const

Returns geometric length of vector.

void negate()

Negates each component of vector in place.

normalize()

Changes vector to be unit length.

SbVec4f & setValue(const float v[4])

SbVec4f & setValue(float x, float y, float z, float w)

Sets the vector components.

float & operator [](int i)

const float & operator [](int i)

Accesses indexed component of vector.

SbVec4f & operator *=(float d)

SbVec4f & operator /=(float d)

Component-wise scalar multiplication and division operators.

SbVec4f & operator +=(const SbVec4f &u)

SbVec4f & operator -=(const SbVec4f &u)

Component-wise vector addition and subtraction operators.

SbVec4f operator -() const

Nondestructive unary negation — returns a new vector.

SbVec4f operator *(const SbVec4f &v, float d)

SbVec4f operator *(float d, const SbVec4f &v)

SbVec4f operator /(const SbVec4f &v, float d)

Component-wise binary scalar multiplication and division operators.

SbVec4f operator +(const SbVec4f &v1, const SbVec4f &v2)

SbVec4f operator -(const SbVec4f &v1, const SbVec4f &v2)

Component-wise binary vector addition and subtraction operators.

int operator ==(const SbVec4f &v1, const SbVec4f &v2)

int operator !=(const SbVec4f &v1, const SbVec4f &v2)

Equality comparison operators.

SEE ALSO¶

SbVec2f, SbVec3f, SbVec2s, SbRotation