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The SbVec2f class is a 2 dimensional vector with floating point coordinates. More...
#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) |
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.
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.
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inlineexplicit |
Constructs an SbVec2f instance with initial values from the vector v.
|
inlineexplicit |
Constructs an SbVec3f instance with initial values from the vector v.
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inlineexplicit |
Constructs an SbVec3f instance with initial values from the vector v.
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inlineexplicit |
Constructs an SbVec3f instance with initial values from the vector v.
SbVec2f & SbVec2f::setValue | ( | const float | v[2] | ) |
Set new x and y coordinates for the vector from v. Returns reference to self.
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.
Set new value from an SbVec2d instance.
Sets the value from an SbVec2b instance.
Sets the value from an SbVec2s instance.
Sets the value from an SbVec2i32 instance.
float SbVec2f::dot | ( | const SbVec2f & | v | ) | const |
Calculates and returns the result of taking the dot product of this vector and v.
SbBool SbVec2f::equals | ( | const SbVec2f & | v, |
const 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.
References SoDebugError::postWarning().
const float * SbVec2f::getValue | ( | void | ) | const |
Returns a pointer to an array of two floats containing the x and y coordinates of the vector.
Referenced by SbBox2f::getBounds().
void SbVec2f::getValue | ( | float & | x, |
float & | y | ||
) | const |
Returns the x and y coordinates of the vector.
float SbVec2f::length | ( | void | ) | const |
Return length of vector.
Referenced by normalize().
float SbVec2f::sqrLength | ( | void | ) | const |
Returns 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.
References length(), operator/=(), and SoDebugError::postWarning().
float & SbVec2f::operator[] | ( | const int | i | ) |
Index operator. Returns modifiable x or y coordinate.
References SoDebugError::postWarning().
const float & SbVec2f::operator[] | ( | const int | i | ) | const |
Index operator. Returns x or y coordinate.
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().
Adds this vector and vector u. Returns reference to self.
Subtracts vector u from this vector. Returns reference to self.
SbVec2f SbVec2f::operator- | ( | void | ) | const |
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.
Referenced by SbViewportRegion::print().
Returns an SbVec2f instance which is the components of vector v multiplied with d.
Returns an SbVec2f instance which is the components of vector v multiplied with d.
Returns an SbVec2f instance which is the components of vector v divided on the scalar factor d.
Returns an SbVec2f instance which is the sum of vectors v1 and v2.
Returns an SbVec2f instance which is vector v2 subtracted from vector v1.
Returns 1 if v1 and v2 are equal, 0 otherwise.
Returns 1 if v1 and v2 are not equal, 0 if they are equal.
Copyright © 1998-2007 by Systems in Motion AS. All rights reserved.
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