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SbVec2d.3sim

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) const

Index operator. Returns x or y coordinate.

See also:

getValue().

References SoDebugError::postWarning().

double SbVec2d::dot (const SbVec2d & v) const

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

References vec.

SbBool SbVec2d::equals (const SbVec2d & 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.

References SoDebugError::postWarning().

const double * SbVec2d::getValue (void) const

Returns 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) const

Returns the x and y coordinates of the vector.

See also:

setValue().

double SbVec2d::length (void) const

Return length of vector.

Referenced by normalize().

double SbVec2d::sqrLength (void) const

Return 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) const

Non-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) 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 Function Documentation

SbVec2d operator* (const SbVec2d & v, const double d) [friend]

Returns an SbVec2d instance which is the components of vector v multiplied with d.

SbVec2d operator* (const double d, const SbVec2d & v) [friend]

Returns an SbVec2d instance which is the components of vector v multiplied with d.

SbVec2d operator/ (const SbVec2d & v, const double d) [friend]

Returns an SbVec2d instance which is the components of vector v divided on the scalar factor d.

SbVec2d operator+ (const SbVec2d & v1, const SbVec2d & v2) [friend]

Returns an SbVec2d instance which is the sum of vectors v1 and v2.

SbVec2d operator- (const SbVec2d & v1, const SbVec2d & v2) [friend]

Returns an SbVec2d instance which is vector v2 subtracted from vector v1.

int operator== (const SbVec2d & v1, const SbVec2d & v2) [friend]

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

See also:

equals().

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

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

See also:

equals().

Author

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