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SoSFRotation
Langue: en
Version: 325373 (ubuntu - 08/07/09)
Section: 3 (Bibliothèques de fonctions)
Sommaire
- NAME
- SYNOPSIS
- Detailed Description
- Member Function Documentation
- SoType SoSFRotation::getClassTypeId (void) [static]
- SoType SoSFRotation::getTypeId (void) const [virtual]
- void SoSFRotation::copyFrom (const SoField & f) [virtual]
- SbBool SoSFRotation::isSame (const SoField & f) const [virtual]
- void SoSFRotation::initClass (void) [static]
- void SoSFRotation::getValue (SbVec3f & axis, float & angle) const
- void SoSFRotation::setValue (const float q0, const float q1, const float q2, const float q3)
- void SoSFRotation::setValue (const float q[4])
- void SoSFRotation::setValue (const SbVec3f & axis, const float angle)
- Author
NAME
SoSFRotation -SYNOPSIS
#include <Inventor/fields/SoSFRotation.h>
Inherits SoSField.
Detailed Description
The SoSFRotation class is a container for an SbRotation.
This field is used where nodes, engines or other field containers needs to store a single rotation definition.
Fields of this type stores their value to file as a rotation axis vector plus a rotation angle: 'axis0 axis1 axis2 angle'.
Note that there is one very common mistake that is easy to make when setting the value of an SoSFRotation field, and that is to inadvertently use the wrong SbRotation constructor. This example should clarify the problem:
mytransformnode->rotation.setValue(0, 0, 1, 1.5707963f);
The programmer clearly tries to set a PI/2 rotation around the Z axis, but this will fail, as the SbRotation constructor invoked above is the one that takes as arguments the 4 floats of a quaternion. What the programmer almost certainly wanted to do was to use the SbRotation constructor that takes a rotation vector and a rotation angle, which is invoked like this:
mytransformnode->rotation.setValue(SbVec3f(0, 0, 1), 1.5707963f);
See also:
- SoMFRotation
Public Member Functions
virtual SoType getTypeId (void) const
virtual void copyFrom (const SoField &field)
const SoSFRotation & operator= (const SoSFRotation &field)
virtual SbBool isSame (const SoField &field) const
const SbRotation & getValue (void) const
void setValue (const SbRotation &newvalue)
const SbRotation & operator= (const SbRotation &newvalue)
int operator== (const SoSFRotation &field) const
int operator!= (const SoSFRotation &field) const
void getValue (SbVec3f &axis, float &angle) const
void setValue (const float q0, const float q1, const float q2, const float q3)
void setValue (const float q[4])
void setValue (const SbVec3f &axis, const float angle)
Static Public Member Functions
static void * createInstance (void)
static SoType getClassTypeId (void)
static void initClass (void)
Protected Attributes
SbRotation value
Member Function Documentation
SoType SoSFRotation::getClassTypeId (void) [static]
Returns a unique type identifier for this field class.
See also:
- getTypeId(), SoType
Reimplemented from SoSField.
SoType SoSFRotation::getTypeId (void) const [virtual]
Returns the type identification instance which uniquely identifies the Coin field class the object belongs to.
See also:
- getClassTypeId(), SoType
Implements SoField.
void SoSFRotation::copyFrom (const SoField & f) [virtual]
Copy value(s) from f into this field. f must be of the same type as this field.
Implements SoField.
SbBool SoSFRotation::isSame (const SoField & f) const [virtual]
Check for equal type and value(s).
Implements SoField.
void SoSFRotation::initClass (void) [static]
Internal method called upon initialization of the library (from SoDB::init()) to set up the type system.
Reimplemented from SoSField.
Referenced by SoField::initClasses().
void SoSFRotation::getValue (SbVec3f & axis, float & angle) const
Return value of rotation as an axis and an angle around this axis.
References SbRotation::getValue().
void SoSFRotation::setValue (const float q0, const float q1, const float q2, const float q3)
Set the rotation from a set of quaternion values.
void SoSFRotation::setValue (const float q[4])
Set the rotation from a set of quaternion values.
void SoSFRotation::setValue (const SbVec3f & axis, const float angle)
Set the rotation from an axis and an angle around this axis.
Author
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