SbVec4f(3IV)

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