![]() |
http://www.sim.no http://www.coin3d.org |
The SbVec4d class is a 4 dimensional vector with double precision floating point coordinates. More...
#include <Inventor/SbVec4d.h>
Public Member Functions | |
SbVec4d (void) | |
SbVec4d (const double v[4]) | |
SbVec4d (const double x, const double y, const double z, const double w) | |
SbVec4d (const SbVec4f &v) | |
double | dot (const SbVec4d &v) const |
SbBool | equals (const SbVec4d &v, const double tolerance) const |
void | getReal (SbVec3d &v) const |
const double * | getValue (void) const |
void | getValue (double &x, double &y, double &z, double &w) const |
double | length (void) const |
double | sqrLength (void) const |
void | negate (void) |
double | normalize (void) |
SbVec4d & | setValue (const double v[4]) |
SbVec4d & | setValue (const double x, const double y, const double z, const double w) |
SbVec4d & | setValue (const SbVec4f &v) |
double & | operator[] (const int i) |
const double & | operator[] (const int i) const |
SbVec4d & | operator*= (const double d) |
SbVec4d & | operator/= (const double d) |
SbVec4d & | operator+= (const SbVec4d &u) |
SbVec4d & | operator-= (const SbVec4d &u) |
SbVec4d | operator- (void) const |
void | print (FILE *fp) const |
Friends | |
SbVec4d | operator* (const SbVec4d &v, const double d) |
SbVec4d | operator* (const double d, const SbVec4d &v) |
SbVec4d | operator/ (const SbVec4d &v, const double d) |
SbVec4d | operator+ (const SbVec4d &v1, const SbVec4d &v2) |
SbVec4d | operator- (const SbVec4d &v1, const SbVec4d &v2) |
int | operator== (const SbVec4d &v1, const SbVec4d &v2) |
int | operator!= (const SbVec4d &v1, const SbVec4d &v2) |
The SbVec4d class is a 4 dimensional vector with double precision floating point coordinates.
This vector class is not 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 double precision floating point arithmetic operations.
SbVec4d::SbVec4d | ( | void | ) |
The default constructor does nothing. The vector coordinates will be uninitialized until a call the setValue().
Referenced by operator-().
SbVec4d::SbVec4d | ( | const double | v[4] | ) |
Constructs an SbVec4d instance with initial values from v.
SbVec4d::SbVec4d | ( | const double | x, |
const double | y, | ||
const double | z, | ||
const double | w | ||
) |
Constructs an SbVec4d instance with the initial homogeneous vector set to <x,y,z,w>.
|
inlineexplicit |
Constructs an SbVec4d instance with initial values from the vector v.
double SbVec4d::dot | ( | const SbVec4d & | v | ) | const |
Calculates and returns the result of taking the dot product of this vector and v.
SbBool SbVec4d::equals | ( | const SbVec4d & | v, |
const double | 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.
References SoDebugError::postWarning().
void SbVec4d::getReal | ( | SbVec3d & | 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.
References SoDebugError::postWarning().
const double * SbVec4d::getValue | ( | void | ) | const |
Returns a pointer to an array of four doubles containing the x, y, z and w coordinates of the vector.
void SbVec4d::getValue | ( | double & | x, |
double & | y, | ||
double & | z, | ||
double & | w | ||
) | const |
Returns the x, y, z and w coordinates of the vector.
double SbVec4d::length | ( | void | ) | const |
Return the length of the vector in 4D space.
Referenced by normalize().
double SbVec4d::sqrLength | ( | void | ) | const |
Return the square of the length of the vector in 4D space.
void SbVec4d::negate | ( | void | ) |
Negate the vector.
double SbVec4d::normalize | ( | void | ) |
Normalize the vector to unit length. Return value is the original length of the vector before normalization.
References length(), operator/=(), and SoDebugError::postWarning().
SbVec4d & SbVec4d::setValue | ( | const double | v[4] | ) |
Set new coordinates for the vector from v. Returns reference to self.
SbVec4d & SbVec4d::setValue | ( | const double | x, |
const double | y, | ||
const double | z, | ||
const double | w | ||
) |
Set new coordinates for the vector. Returns reference to self.
Set new value from an SbVec4f instance. Returns reference to self.
double & SbVec4d::operator[] | ( | const int | i | ) |
Index operator. Returns modifiable x, y, z or w component of vector.
References SoDebugError::postWarning().
const double & SbVec4d::operator[] | ( | const int | i | ) | const |
Index operator. Returns x, y, z or w component of vector.
References SoDebugError::postWarning().
SbVec4d & SbVec4d::operator*= | ( | const double | d | ) |
Multiply components of vector with value d. Returns reference to self.
SbVec4d & SbVec4d::operator/= | ( | const double | d | ) |
Divides components of vector with value d. Returns reference to self.
References SoDebugError::postWarning().
Referenced by normalize().
Adds this vector and vector u. Returns reference to self.
Subtracts vector u from this vector. Returns reference to self.
SbVec4d SbVec4d::operator- | ( | void | ) | const |
void SbVec4d::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.
Returns an SbVec4d instance which is the components of vector v multiplied with d.
Returns an SbVec4d instance which is the components of vector v multiplied with d.
Returns an SbVec4d instance which is the components of vector v divided on the scalar factor d.
Returns an SbVec4d instance which is the sum of vectors v1 and v2.
Returns an SbVec4d instance which is vector v2 subtracted from vector v1.
Returns 1 if v1 and v2 are equal, 0 otherwise.
Returns 1 if v1 and v2 are not equal, 0 if they are equal.
Copyright © 1998-2007 by Systems in Motion AS. All rights reserved.
Generated on Fri Feb 17 2017 for Coin by Doxygen. 1.8.13