SbVec4d(3)

NAME
SbVec4d - The SbVec4d class is a 4 dimensional vector with double precision floating point coordinates.

SYNOPSIS

#include <Inventor/SbVec4d.h>

  Public Member Functions
SbVec4d (void)
SbVec4d (const double v[4])
SbVec4d (double x, double y, double z, double w)
SbVec4d (const SbVec4f &v)
SbVec4d (const SbVec4b &v)
SbVec4d (const SbVec4s &v)
SbVec4d (const SbVec4i32 &v)
SbVec4d & setValue (const double v[4])
SbVec4d & setValue (double x, double y, double z, double w)
SbVec4d & setValue (const SbVec4f &v)
SbVec4d & setValue (const SbVec4b &v)
SbVec4d & setValue (const SbVec4s &v)
SbVec4d & setValue (const SbVec4i32 &v)
const double * getValue (void) const
void getValue (double &x, double &y, double &z, double &w) const
double & operator[] (int i)
const double & operator[] (int i) const
double dot (const SbVec4d &v) const
SbBool equals (const SbVec4d &v, double tolerance) const
void getReal (SbVec3d &v) const
double length (void) const
double sqrLength (void) const
void negate (void)
double normalize (void)
SbVec4d & operator*= (double d)
SbVec4d & operator/= (double d)
SbVec4d & operator+= (const SbVec4d &v)
SbVec4d & operator-= (const SbVec4d &v)
SbVec4d operator- (void) const
void print (FILE *fp) const

  Protected Attributes
double vec [4]

  Related Functions
(Note that these are not member functions.)
SbVec4d operator* (const SbVec4d &v, double d)
SbVec4d operator* (double d, const SbVec4d &v)
SbVec4d operator/ (const SbVec4d &v, 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)

Detailed Description

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 homogeneous vector (with the 4 components usually referred to as <x, y, z, w>) as well as simple double precision floating point arithmetic operations.

See also
    SbVec2s, SbVec2f, SbVec2d, SbVec3s, SbVec3f, SbVec3d, SbVec4f.

Constructor & Destructor Documentation

  SbVec4d::SbVec4d (void) [inline]
The default constructor does nothing. The vector coordinates will be uninitialized until a call the setValue().

  SbVec4d::SbVec4d (const double v[4]) [inline]
Constructs an SbVec4d instance with initial values from v.

  SbVec4d::SbVec4d (double x, double y, double z, double w) [inline]
Constructs an SbVec4d instance with the initial homogeneous vector set to <x,y,z,w>.

  SbVec4d::SbVec4d (const SbVec4f & v) [inline], [explicit]
Constructs an SbVec4d instance from an SbVec4f instance.

  SbVec4d::SbVec4d (const SbVec4b & v) [inline], [explicit]
Constructs an SbVec4d instance from an SbVec4b instance.

Since
    Coin 2.5

  SbVec4d::SbVec4d (const SbVec4s & v) [inline], [explicit]
Constructs an SbVec4d instance from an SbVec4s instance.

Since
    Coin 2.5

  SbVec4d::SbVec4d (const SbVec4i32 & v) [inline], [explicit]
Constructs an SbVec4d instance from an SbVec4i32 instance.

Since
    Coin 2.5

Member Function Documentation

  SbVec4d & SbVec4d::setValue (const double v[4]) [inline]
Set new coordinates for the vector from v. Returns reference to self.

See also
    getValue().

  SbVec4d & SbVec4d::setValue (double x, double y, double z, double w) [inline]
Set new coordinates for the vector. Returns reference to self.

See also
    getValue().

  SbVec4d & SbVec4d::setValue (const SbVec4f & v)

Since
    Coin 2.5

  SbVec4d & SbVec4d::setValue (const SbVec4b & v)

Since
    Coin 2.5

  SbVec4d & SbVec4d::setValue (const SbVec4s & v)

Since
    Coin 2.5

  SbVec4d & SbVec4d::setValue (const SbVec4i32 & v)

Since
    Coin 2.5

  const double * SbVec4d::getValue (void) const [inline]
Returns a pointer to an array of four doubles containing the x, y, z and w coordinates of the vector.

See also
    setValue().

  void SbVec4d::getValue (double & x, double & y, double & z, double & w) const [inline]
Returns the x, y, z and w coordinates of the vector.

See also
    setValue().

  double & SbVec4d::operator[] (int i) [inline]
Index operator. Returns modifiable x, y, z or w component of vector.

See also
    getValue() and setValue().

  const double & SbVec4d::operator[] (int i) const [inline]
Index operator. Returns x, y, z or w component of vector.

See also
    getValue() and setValue().

  double SbVec4d::dot (const SbVec4d & v) const [inline]
Calculates and returns the result of taking the dot product of this vector and v.

  SbBool SbVec4d::equals (const SbVec4d & v, 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.

  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.

  double SbVec4d::length (void) const
Return the length of the vector in 4D space.

  double SbVec4d::sqrLength (void) const [inline]
Return the square of the length of the vector in 4D space.

  void SbVec4d::negate (void) [inline]
Negate the vector.

  double SbVec4d::normalize (void)
Normalize the vector to unit length. Return value is the original length of the vector before normalization.

  SbVec4d & SbVec4d::operator*= (double d) [inline]
Multiply components of vector with value d. Returns reference to self.

  SbVec4d & SbVec4d::operator/= (double d) [inline]
Divides components of vector with value d. Returns reference to self.

  SbVec4d & SbVec4d::operator+= (const SbVec4d & v) [inline]
Adds this vector and vector v. Returns reference to self.

  SbVec4d & SbVec4d::operator-= (const SbVec4d & v) [inline]
Subtracts vector v from this vector. Returns reference to self.

  SbVec4d SbVec4d::operator- (void) const [inline]
Non-destructive negation operator. Returns a new SbVec4d instance which has all components negated.

See also
    negate().

  void SbVec4d::print (FILE * fp) const
Dump the state of this object to the fp file stream. Only works in debug version of library, method does nothing in an optimized build.

Friends And Related Function Documentation

  SbVec4d operator* (const SbVec4d & v, double d) [related]
Returns an SbVec4d instance which is the components of vector v multiplied with d.

  SbVec4d operator* (double d, const SbVec4d & v) [related]
Returns an SbVec4d instance which is the components of vector v multiplied with d.

  SbVec4d operator/ (const SbVec4d & v, double d) [related]
Returns an SbVec4d instance which is the components of vector v divided on the scalar factor d.

  SbVec4d operator+ (const SbVec4d & v1, const SbVec4d & v2) [related]
Returns an SbVec4d instance which is the sum of vectors v1 and v2.

  SbVec4d operator- (const SbVec4d & v1, const SbVec4d & v2) [related]
Returns an SbVec4d instance which is vector v2 subtracted from vector v1.

  int operator== (const SbVec4d & v1, const SbVec4d & v2) [related]
Returns 1 if v1 and v2 are equal, 0 otherwise.

See also
    equals().

  int operator!= (const SbVec4d & v1, const SbVec4d & v2) [related]
Returns 1 if v1 and v2 are not equal, 0 if they are equal.

See also
    equals().

Author

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