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SbVec2f.3coin2
Langue: en
Version: 380171 (fedora - 01/12/10)
Section: 3 (Bibliothèques de fonctions)
Sommaire
- NAME
- SYNOPSIS
- Detailed Description
- Constructor & Destructor Documentation
- SbVec2f::SbVec2f (void)The default constructor does nothing. The vector coordinates will be uninitialized until you do a setValue().
- SbVec2f::SbVec2f (const float v[2])Constructs an SbVec2f instance with initial values from v.
- SbVec2f::SbVec2f (const float x, const float y)Constructs an SbVec2f instance with the initial vector endpoints from x and y.
- SbVec2f::SbVec2f (const SbVec2d & v) [inline, explicit]Constructs an SbVec2f instance with initial values from the vector v.
- SbVec2f::SbVec2f (const SbVec2b & v) [inline, explicit]Constructs an SbVec3f instance with initial values from the vector v.
- SbVec2f::SbVec2f (const SbVec2s & v) [inline, explicit]Constructs an SbVec3f instance with initial values from the vector v.
- SbVec2f::SbVec2f (const SbVec2i32 & v) [inline, explicit]Constructs an SbVec3f instance with initial values from the vector v.
- Member Function Documentation
- SbVec2f & SbVec2f::setValue (const float v[2])Set new x and y coordinates for the vector from v. Returns reference to self.
- SbVec2f & SbVec2f::setValue (const float x, const float y)Set new x and y coordinates for the vector. Returns reference to self.
- SbVec2f & SbVec2f::setValue (const SbVec2d & v)Set new value from an SbVec2d instance.
- SbVec2f & SbVec2f::setValue (const SbVec2b & v)Sets the value from an SbVec2b instance.
- SbVec2f & SbVec2f::setValue (const SbVec2s & v)Sets the value from an SbVec2s instance.
- SbVec2f & SbVec2f::setValue (const SbVec2i32 & v)Sets the value from an SbVec2i32 instance.
- float SbVec2f::dot (const SbVec2f & v) constCalculates and returns the result of taking the dot product of this vector and v.
- SbBool SbVec2f::equals (const SbVec2f & v, const float 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.
- const float * SbVec2f::getValue (void) constReturns a pointer to an array of two floats containing the x and y coordinates of the vector.
- void SbVec2f::getValue (float & x, float & y) constReturns the x and y coordinates of the vector.
- float SbVec2f::length (void) constReturn length of vector.
- float SbVec2f::sqrLength (void) constReturns the square of the length of the vector.
- void SbVec2f::negate (void)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.
- float & SbVec2f::operator[] (const int i)Index operator. Returns modifiable x or y coordinate.
- const float & SbVec2f::operator[] (const int i) constIndex operator. Returns x or y coordinate.
- SbVec2f & SbVec2f::operator*= (const float d)Multiply components of vector with value d. Returns reference to self.
- SbVec2f & SbVec2f::operator/= (const float d)Divides components of vector with value d. Returns reference to self.
- SbVec2f & SbVec2f::operator+= (const SbVec2f & u)Adds this vector and vector u. Returns reference to self.
- SbVec2f & SbVec2f::operator-= (const SbVec2f & u)Subtracts vector u from this vector. Returns reference to self.
- SbVec2f SbVec2f::operator- (void) constNon-destructive negation operator. Returns a new SbVec2f instance which points in the opposite direction of this vector.
- void SbVec2f::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
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 (const float x, const 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 (const float x, const float y)
SbVec2f & setValue (const SbVec2d &v)
SbVec2f & setValue (const SbVec2b &v)
SbVec2f & setValue (const SbVec2s &v)
SbVec2f & setValue (const SbVec2i32 &v)
float dot (const SbVec2f &v) const
SbBool equals (const SbVec2f &v, const float tolerance) const
const float * getValue (void) const
void getValue (float &x, float &y) const
float length (void) const
float sqrLength (void) const
void negate (void)
float normalize (void)
float & operator[] (const int i)
const float & operator[] (const int i) const
SbVec2f & operator*= (const float d)
SbVec2f & operator/= (const float d)
SbVec2f & operator+= (const SbVec2f &u)
SbVec2f & operator-= (const SbVec2f &u)
SbVec2f operator- (void) const
void print (FILE *fp) const
Friends
SbVec2f operator* (const SbVec2f &v, const float d)
SbVec2f operator* (const float d, const SbVec2f &v)
SbVec2f operator/ (const SbVec2f &v, const 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:
- SbVec2d, SbVec3f, SbVec3d, SbVec4f, SbVec4d
Constructor & Destructor Documentation
SbVec2f::SbVec2f (void)The default constructor does nothing. The vector coordinates will be uninitialized until you do a setValue().
Referenced by operator-().
SbVec2f::SbVec2f (const float v[2])Constructs an SbVec2f instance with initial values from v.
SbVec2f::SbVec2f (const float x, const float y)Constructs an SbVec2f instance with the initial vector endpoints from x and y.
SbVec2f::SbVec2f (const SbVec2d & v) [inline, explicit]Constructs an SbVec2f instance with initial values from the vector v.
Since:
- Coin-2.5
SbVec2f::SbVec2f (const SbVec2b & v) [inline, explicit]Constructs an SbVec3f instance with initial values from the vector v.
Since:
- Coin-2.5
SbVec2f::SbVec2f (const SbVec2s & v) [inline, explicit]Constructs an SbVec3f instance with initial values from the vector v.
Since:
- Coin-2.5
SbVec2f::SbVec2f (const SbVec2i32 & v) [inline, explicit]Constructs an SbVec3f instance with initial values from the vector v.
Since:
- Coin-2.5
Member Function Documentation
SbVec2f & SbVec2f::setValue (const float v[2])Set new x and y coordinates for the vector from v. Returns reference to self.
See also:
- getValue().
Referenced by SbBox2f::extendBy(), SbBox2f::makeEmpty(), SbBox2f::setBounds(), SbViewportRegion::setViewport(), and SbViewportRegion::setViewportPixels().
SbVec2f & SbVec2f::setValue (const float x, const float y)Set new x and y coordinates for the vector. Returns reference to self.
See also:
- getValue().
SbVec2f & SbVec2f::setValue (const SbVec2d & v)Set new 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
float SbVec2f::dot (const SbVec2f & v) constCalculates and returns the result of taking the dot product of this vector and v.
SbBool SbVec2f::equals (const SbVec2f & v, const float 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 float * SbVec2f::getValue (void) constReturns a pointer to an array of two floats containing the x and y coordinates of the vector.
See also:
- setValue().
Referenced by SbBox2f::getBounds().
void SbVec2f::getValue (float & x, float & y) constReturns the x and y coordinates of the vector.
See also:
- setValue().
float SbVec2f::length (void) constReturn length of vector.
Referenced by normalize().
float SbVec2f::sqrLength (void) constReturns the square of the length of the vector.
Since:
- Coin-2.5
void SbVec2f::negate (void)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.
References length(), operator/=(), and SoDebugError::postWarning().
float & SbVec2f::operator[] (const int i)Index operator. Returns modifiable x or y coordinate.
See also:
- getValue() and setValue().
References SoDebugError::postWarning().
const float & SbVec2f::operator[] (const int i) constIndex operator. Returns x or y coordinate.
See also:
- getValue().
References SoDebugError::postWarning().
SbVec2f & SbVec2f::operator*= (const float d)Multiply components of vector with value d. Returns reference to self.
SbVec2f & SbVec2f::operator/= (const float d)Divides components of vector with value d. Returns reference to self.
References SoDebugError::postWarning().
Referenced by normalize().
SbVec2f & SbVec2f::operator+= (const SbVec2f & u)Adds this vector and vector u. Returns reference to self.
SbVec2f & SbVec2f::operator-= (const SbVec2f & u)Subtracts vector u from this vector. Returns reference to self.
SbVec2f SbVec2f::operator- (void) constNon-destructive negation operator. Returns a new SbVec2f instance which points in the opposite direction of this vector.
See also:
- negate().
References SbVec2f().
void SbVec2f::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.
Referenced by SbViewportRegion::print().
Author
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