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SbVec2d.3coin2

NAME

SbVec2d -

The SbVec2d class is a 2 dimensional vector with double precision floating point coordinates.

SYNOPSIS

#include <Inventor/SbLinear.h>

Public Member Functions

SbVec2d (void)

SbVec2d (const double v[2])

SbVec2d (const double x, const double y)

SbVec2d (const SbVec2f &v)

SbVec2d (const SbVec2b &v)

SbVec2d (const SbVec2s &v)

SbVec2d (const SbVec2i32 &v)

SbVec2d & setValue (const double v[2])

SbVec2d & setValue (const double x, const double y)

SbVec2d & setValue (const SbVec2f &v)

SbVec2d & setValue (const SbVec2b &v)

SbVec2d & setValue (const SbVec2s &v)

SbVec2d & setValue (const SbVec2i32 &v)

double & operator[] (const int i)

const double & operator[] (const int i) const

double dot (const SbVec2d &v) const

SbBool equals (const SbVec2d &v, const double tolerance) const

const double * getValue (void) const

void getValue (double &x, double &y) const

double length (void) const

double sqrLength (void) const

void negate (void)

double normalize (void)

SbVec2d & operator*= (const double d)

SbVec2d & operator/= (const double d)

SbVec2d & operator+= (const SbVec2d &u)

SbVec2d & operator-= (const SbVec2d &u)

SbVec2d operator- (void) const

void print (FILE *fp) const

Friends

SbVec2d operator* (const SbVec2d &v, const double d)

SbVec2d operator* (const double d, const SbVec2d &v)

SbVec2d operator/ (const SbVec2d &v, const double d)

SbVec2d operator+ (const SbVec2d &v1, const SbVec2d &v2)

SbVec2d operator- (const SbVec2d &v1, const SbVec2d &v2)

int operator== (const SbVec2d &v1, const SbVec2d &v2)

int operator!= (const SbVec2d &v1, const SbVec2d &v2)

Detailed Description

The SbVec2d class is a 2 dimensional vector with double precision 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:

SbVec2f, SbVec3f, SbVec3d, SbVec4f, SbVec4d

Constructor & Destructor Documentation

SbVec2d::SbVec2d (void)The default constructor does nothing. The vector coordinates will be uninitialized until you do a setValue().

Referenced by operator-().

SbVec2d::SbVec2d (const double v[2])Constructs an SbVec2d instance with initial values from v.

SbVec2d::SbVec2d (const double x, const double y)Constructs an SbVec2d instance with the initial vector endpoints from x and y.

SbVec2d::SbVec2d (const SbVec2f & v) [inline, explicit]Constructs an SbVec2d instance with initial values from the vector v.

Since:

Coin-2.5

SbVec2d::SbVec2d (const SbVec2b & v) [inline, explicit]Constructs an SbVec2d instance with initial values from the vector v.

Since:

Coin-2.5

SbVec2d::SbVec2d (const SbVec2s & v) [inline, explicit]Constructs an SbVec2d instance with initial values from the vector v.

Since:

Coin-2.5

SbVec2d::SbVec2d (const SbVec2i32 & v) [inline, explicit]Constructs an SbVec2d instance with initial values from the vector v.

Since:

Coin-2.5

Member Function Documentation

SbVec2d & SbVec2d::setValue (const double v[2])Set new x and y coordinates for the vector from v. Returns reference to self.

See also:

getValue().

Referenced by SbBox2d::extendBy(), SbBox2d::makeEmpty(), and SbBox2d::setBounds().

SbVec2d & SbVec2d::setValue (const double x, const double y)Set new x and y coordinates for the vector. Returns reference to self.

See also:

getValue().

SbVec2d & SbVec2d::setValue (const SbVec2f & v)Set new value from an SbVec2f instance. Returns reference to self.

Since:

Coin-2.5

See also:

getValue().

SbVec2d & SbVec2d::setValue (const SbVec2b & v)Sets the value from an SbVec2b instance. Returns reference to itself.

Since:

Coin-2.5

SbVec2d & SbVec2d::setValue (const SbVec2s & v)Sets the value from an SbVec2s instance. Returns reference to itself.

Since:

Coin-2.5

SbVec2d & SbVec2d::setValue (const SbVec2i32 & v)Sets the value from an SbVec2i32 instance. Returns reference to itself.

Since:

Coin-2.5

double & SbVec2d::operator[] (const int i)Index operator. Returns modifiable x or y coordinate.

See also:

getValue() and setValue().

References SoDebugError::postWarning().

const double & SbVec2d::operator[] (const int i) constIndex operator. Returns x or y coordinate.

See also:

getValue().

References SoDebugError::postWarning().

double SbVec2d::dot (const SbVec2d & v) constCalculates and returns the result of taking the dot product of this vector and v.

SbBool SbVec2d::equals (const SbVec2d & v, const double tolerance) constCompares the vector with v and returns TRUE if the distance between the vectors is smaller or equal to the square root of tolerance.

References SoDebugError::postWarning().

const double * SbVec2d::getValue (void) constReturns a pointer to an array of two double containing the x and y coordinates of the vector.

See also:

setValue().

Referenced by SbBox2d::getBounds().

void SbVec2d::getValue (double & x, double & y) constReturns the x and y coordinates of the vector.

See also:

setValue().

double SbVec2d::length (void) constReturn length of vector.

Referenced by normalize().

double SbVec2d::sqrLength (void) constReturn length of vector.

Since:

Coin-2.5

void SbVec2d::negate (void)Negate the vector (i.e. point it in the opposite direction).

double SbVec2d::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().

SbVec2d & SbVec2d::operator*= (const double d)Multiply components of vector with value d. Returns reference to self.

SbVec2d & SbVec2d::operator/= (const double d)Divides components of vector with value d. Returns reference to self.

References SoDebugError::postWarning().

Referenced by normalize().

SbVec2d & SbVec2d::operator+= (const SbVec2d & u)Adds this vector and vector u. Returns reference to self.

SbVec2d & SbVec2d::operator-= (const SbVec2d & u)Subtracts vector u from this vector. Returns reference to self.

SbVec2d SbVec2d::operator- (void) constNon-destructive negation operator. Returns a new SbVec2d instance which points in the opposite direction of this vector.

See also:

negate().

References SbVec2d().

void SbVec2d::print (FILE * fp) constDump the state of this object to the file stream. Only works in debug version of library, method does nothing in an optimized compile.

Author

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