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SbVec2f(3) Library Functions Manual SbVec2f(3)

NAME

SbVec2f - The SbVec2f class is a 2 dimensional vector with floating point coordinates.

SYNOPSIS

#include <Inventor/SbLinear.h>

Public Member Functions


SbVec2f (void)
SbVec2f (const float v[2])
SbVec2f (float x, float y)
SbVec2f (const SbVec2d &v)
SbVec2f (const SbVec2b &v)
SbVec2f (const SbVec2s &v)
SbVec2f (const SbVec2i32 &v)
SbVec2f & setValue (const float v[2])
SbVec2f & setValue (float x, float y)
SbVec2f & setValue (const SbVec2d &v)
SbVec2f & setValue (const SbVec2b &v)
SbVec2f & setValue (const SbVec2s &v)
SbVec2f & setValue (const SbVec2i32 &v)
const float * getValue (void) const
void getValue (float &x, float &y) const
float & operator[] (int i)
const float & operator[] (int i) const
float dot (const SbVec2f &v) const
SbBool equals (const SbVec2f &v, float tolerance) const
float length (void) const
float sqrLength (void) const
void negate (void)
float normalize (void)
SbVec2f & operator*= (float d)
SbVec2f & operator/= (float d)
SbVec2f & operator+= (const SbVec2f &v)
SbVec2f & operator-= (const SbVec2f &v)
SbVec2f operator- (void) const
void print (FILE *fp) const

Protected Attributes


float vec [2]

(Note that these are not member symbols.)
SbVec2f operator* (const SbVec2f &v, float d)
SbVec2f operator* (float d, const SbVec2f &v)
SbVec2f operator/ (const SbVec2f &v, float d)
SbVec2f operator+ (const SbVec2f &v1, const SbVec2f &v2)
SbVec2f operator- (const SbVec2f &v1, const SbVec2f &v2)
int operator== (const SbVec2f &v1, const SbVec2f &v2)
int operator!= (const SbVec2f &v1, const SbVec2f &v2)

Detailed Description

The SbVec2f class is a 2 dimensional vector with floating point coordinates.

This vector class is used by many other classes in Coin. It provides storage for a vector in 2 dimensions aswell as simple floating point arithmetic operations on this vector.

See also

SbVec2s, SbVec2d, SbVec3s, SbVec3f, SbVec3d, SbVec4f, SbVec4d.

Constructor & Destructor Documentation

SbVec2f::SbVec2f (void) [inline]

The default constructor does nothing. The vector coordinates will be uninitialized until you do a setValue().

SbVec2f::SbVec2f (const float v[2]) [inline]

Constructs an SbVec2f instance with initial values from v.

SbVec2f::SbVec2f (float x, float y) [inline]

Constructs an SbVec2f instance with the initial vector endpoints from x and y.

SbVec2f::SbVec2f (const SbVec2d & v) [inline], [explicit]

Constructs an instance from an SbVec2d instance.

Since

Coin 2.5

SbVec2f::SbVec2f (const SbVec2b & v) [inline], [explicit]

Constructs an instance from an SbVec2d instance.

Since

Coin 2.5

SbVec2f::SbVec2f (const SbVec2s & v) [inline], [explicit]

Constructs an instance from an SbVec2d instance.

Since

Coin 2.5

SbVec2f::SbVec2f (const SbVec2i32 & v) [inline], [explicit]

Constructs an instance from an SbVec2d instance.

Since

Coin 2.5

Member Function Documentation

SbVec2f & SbVec2f::setValue (const float v[2]) [inline]

Set new x and y coordinates for the vector from v. Returns reference to self.

See also

getValue().

SbVec2f & SbVec2f::setValue (float x, float y) [inline]

Set new x and y coordinates for the vector. Returns reference to self.

See also

getValue().

SbVec2f & SbVec2f::setValue (const SbVec2d & v)

Sets the value from an SbVec2d instance.

Since

Coin 2.5

SbVec2f & SbVec2f::setValue (const SbVec2b & v)

Sets the value from an SbVec2b instance.

Since

Coin 2.5

SbVec2f & SbVec2f::setValue (const SbVec2s & v)

Sets the value from an SbVec2s instance.

Since

Coin 2.5

SbVec2f & SbVec2f::setValue (const SbVec2i32 & v)

Sets the value from an SbVec2i32 instance.

Since

Coin 2.5

const float * SbVec2f::getValue (void) const [inline]

Returns a pointer to an array of two floats containing the x and y coordinates of the vector.

See also

setValue().

void SbVec2f::getValue (float & x, float & y) const [inline]

Returns the x and y coordinates of the vector.

See also

setValue().

float & SbVec2f::operator[] (int i) [inline]

Index operator. Returns modifiable x or y coordinate.

See also

getValue() and setValue().

const float & SbVec2f::operator[] (int i) const [inline]

Index operator. Returns x or y coordinate.

See also

getValue().

float SbVec2f::dot (const SbVec2f & v) const [inline]

Calculates and returns the result of taking the dot product of this vector and v.

SbBool SbVec2f::equals (const SbVec2f & 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.

float SbVec2f::length (void) const

Return length of vector.

float SbVec2f::sqrLength (void) const [inline]

Returns the square of the length of the vector.

Since

Coin 2.5

void SbVec2f::negate (void) [inline]

Negate the vector (i.e. point it in the opposite direction).

float SbVec2f::normalize (void)

Normalize the vector to unit length. Return value is the original length of the vector before normalization.

SbVec2f & SbVec2f::operator*= (float d) [inline]

Multiply components of vector with value d. Returns reference to self.

SbVec2f & SbVec2f::operator/= (float d) [inline]

Divides components of vector with value d. Returns reference to self.

SbVec2f & SbVec2f::operator+= (const SbVec2f & v) [inline]

Adds this vector and vector u. Returns reference to self.

SbVec2f & SbVec2f::operator-= (const SbVec2f & v) [inline]

Subtracts vector u from this vector. Returns reference to self.

SbVec2f SbVec2f::operator- (void) const [inline]

Non-destructive negation operator. Returns a new SbVec2f instance which points in the opposite direction of this vector.

See also

negate().

void SbVec2f::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.

Friends And Related Symbol Documentation

SbVec2f operator* (const SbVec2f & v, float d) [related]

Returns an SbVec2f instance which is the components of vector v multiplied with d.

SbVec2f operator* (float d, const SbVec2f & v) [related]

Returns an SbVec2f instance which is the components of vector v multiplied with d.

SbVec2f operator/ (const SbVec2f & v, float d) [related]

Returns an SbVec2f instance which is the components of vector v divided on the scalar factor d.

SbVec2f operator+ (const SbVec2f & v1, const SbVec2f & v2) [related]

Returns an SbVec2f instance which is the sum of vectors v1 and v2.

SbVec2f operator- (const SbVec2f & v1, const SbVec2f & v2) [related]

Returns an SbVec2f instance which is vector v2 subtracted from vector v1.

int operator== (const SbVec2f & v1, const SbVec2f & v2) [related]

Returns 1 if v1 and v2 are equal, 0 otherwise.

See also

equals().

int operator!= (const SbVec2f & v1, const SbVec2f & v2) [related]

Returns 1 if v1 and v2 are not equal, 0 if they are equal.

See also

equals().

Author

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