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The SbVec4f class is a 4 dimensional vector with floating point coordinates.This vector class is used by many other classes in Coin. It provides storage for a 3 dimensional homogeneoues vector (with the 4 components usually referred to as <x, y, z, w>) aswell as simple floating point arithmetic operations. More...
#include <Inventor/SbLinear.h>
Public Member Functions | |
SbVec4f (void) | |
SbVec4f (const float v[4]) | |
SbVec4f (float x, float y, float z, float w) | |
SbVec4f (const SbVec4d &v) | |
SbVec4f (const SbVec4b &v) | |
SbVec4f (const SbVec4s &v) | |
SbVec4f (const SbVec4i32 &v) | |
SbVec4f & | setValue (const float v[4]) |
SbVec4f & | setValue (float x, float y, float z, float w) |
SbVec4f & | setValue (const SbVec4d &v) |
SbVec4f & | setValue (const SbVec4b &v) |
SbVec4f & | setValue (const SbVec4s &v) |
SbVec4f & | setValue (const SbVec4i32 &v) |
const float * | getValue (void) const |
void | getValue (float &x, float &y, float &z, float &w) const |
float & | operator[] (int i) |
const float & | operator[] (int i) const |
SbBool | equals (const SbVec4f &v, float tolerance) const |
float | dot (const SbVec4f &v) const |
void | getReal (SbVec3f &v) const |
float | length (void) const |
float | sqrLength (void) const |
void | negate (void) |
float | normalize (void) |
SbVec4f & | operator*= (float d) |
SbVec4f & | operator/= (float d) |
SbVec4f & | operator+= (const SbVec4f &v) |
SbVec4f & | operator-= (const SbVec4f &v) |
SbVec4f | operator- (void) const |
void | print (FILE *fp) const |
Protected Attributes | |
float | vec [4] |
The SbVec4f class is a 4 dimensional vector with floating point coordinates.
This vector class is used by many other classes in Coin. It provides storage for a 3 dimensional homogeneoues vector (with the 4 components usually referred to as <x, y, z, w>) aswell as simple floating point arithmetic operations.
SbVec4f::SbVec4f | ( | void | ) | [inline] |
The default constructor does nothing. The vector coordinates will be uninitialized until a call the setValue().
SbVec4f::SbVec4f | ( | const float | v[4] | ) | [inline] |
Constructs an SbVec4f instance with initial values from v.
SbVec4f::SbVec4f | ( | float | x, | |
float | y, | |||
float | z, | |||
float | w | |||
) | [inline] |
Constructs an SbVec4f instance with the initial homogeneous vector set to <x,y,z,w>.
SbVec4f::SbVec4f | ( | const SbVec4d & | v | ) | [inline, explicit] |
SbVec4f::SbVec4f | ( | const SbVec4b & | v | ) | [inline, explicit] |
SbVec4f::SbVec4f | ( | const SbVec4s & | v | ) | [inline, explicit] |
SbVec4f::SbVec4f | ( | const SbVec4i32 & | v | ) | [inline, explicit] |
SbVec4f & SbVec4f::setValue | ( | const float | v[4] | ) | [inline] |
Set new coordinates for the vector from v. Returns reference to self.
Reimplemented in SbColor4f.
SbVec4f & SbVec4f::setValue | ( | float | x, | |
float | y, | |||
float | z, | |||
float | w | |||
) | [inline] |
Set new coordinates for the vector. Returns reference to self.
Reimplemented in SbColor4f.
const float * SbVec4f::getValue | ( | void | ) | const [inline] |
Returns a pointer to an array of four floats containing the x, y, z and w coordinates of the vector.
Reimplemented in SbColor4f.
void SbVec4f::getValue | ( | float & | x, | |
float & | y, | |||
float & | z, | |||
float & | w | |||
) | const [inline] |
Returns the x, y, z and w coordinates of the vector.
float & SbVec4f::operator[] | ( | int | i | ) | [inline] |
Index operator. Returns modifiable x, y, z or w component of vector.
Reimplemented in SbColor4f.
const float & SbVec4f::operator[] | ( | int | i | ) | const [inline] |
Index operator. Returns x, y, z or w component of vector.
Reimplemented in SbColor4f.
SbBool SbVec4f::equals | ( | const SbVec4f & | v, | |
float | tolerance | |||
) | const |
Compares the vector with v and returns TRUE
if the distance between the vectors is smaller or equal to the square root of tolerance.
The comparison is done in 4D-space, i.e. the w component of the vector is not used to make x, y and z into Cartesian coordinates first.
float SbVec4f::dot | ( | const SbVec4f & | v | ) | const [inline] |
Calculates and returns the result of taking the dot product of this vector and v.
void SbVec4f::getReal | ( | SbVec3f & | v | ) | const |
Returns the vector as a Cartesian 3D vector in v. This means that the 3 first components x, y and z will be divided by the fourth, w.
float SbVec4f::length | ( | void | ) | const |
Return the length of the vector in 4D space.
float SbVec4f::sqrLength | ( | void | ) | const [inline] |
Return the square of the length of the vector in 4D space.
void SbVec4f::negate | ( | void | ) | [inline] |
Negate the vector.
float SbVec4f::normalize | ( | void | ) |
Normalize the vector to unit length. Return value is the original length of the vector before normalization.
SbVec4f & SbVec4f::operator*= | ( | float | d | ) | [inline] |
Multiply components of vector with value d. Returns reference to self.
Reimplemented in SbColor4f.
SbVec4f & SbVec4f::operator/= | ( | float | d | ) | [inline] |
Divides components of vector with value d. Returns reference to self.
Reimplemented in SbColor4f.
Adds this vector and vector v. Returns reference to self.
Reimplemented in SbColor4f.
Subtracts vector v from this vector. Returns reference to self.
Reimplemented in SbColor4f.
SbVec4f SbVec4f::operator- | ( | void | ) | const [inline] |
void SbVec4f::print | ( | FILE * | fp | ) | const |
Dump the state of this object to the file stream. Only works in debug version of library, method does nothing in an optimized compile.
Copyright © 1998-2010 by Kongsberg Oil & Gas Technologies. All rights reserved.
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