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SoCenterballDragger Class Reference

The SoCenterballDragger class is a dragger you can rotate and translate. More...

#include <Inventor/draggers/SoCenterballDragger.h>

Inheritance diagram for SoCenterballDragger::

List of all members.

Public Methods
	SoCenterballDragger (void)
virtual void	saveStartParameters (void)
Static Public Methods
void	initClass (void)
Public Attributes
SoSFRotation	rotation
SoSFVec3f	center
Protected Methods
	~SoCenterballDragger ()
void	transferCenterDraggerMotion (SoDragger *childdragger)
void	setSwitches (SoDragger *activechild)
virtual SbBool	setUpConnections (SbBool onoff, SbBool doitalways=FALSE)
virtual void	setDefaultOnNonWritingFields (void)
virtual void	getBoundingBox (SoGetBoundingBoxAction *action)
virtual void	getMatrix (SoGetMatrixAction *action)
Static Protected Methods
void	fieldSensorCB (void *f, SoSensor *s)
void	valueChangedCB (void *f, SoDragger *d)
void	kidStartCB (void *f, SoDragger *d)
void	kidFinishCB (void *f, SoDragger *d)
Protected Attributes
SoFieldSensor *	rotFieldSensor
SoFieldSensor *	centerFieldSensor

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Detailed Description

The SoCenterballDragger class is a dragger you can rotate and translate.

For rotation, click either the ball "bands" to contraint rotation to happen around the normal vector of the disc, or anywhere else on the (invisible) ball for free-form rotation.

Translation is done by clicking and dragging any of the four arrow markers. Hold SHIFT to constrain translation to a single axis instead of in the plane.

When translating, instead of modifying the translation part of the motion matrix, a center field is updated, and the geometry is moved using an internal transformation node.

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Constructor & Destructor Documentation

SoCenterballDragger::SoCenterballDragger (  void )

Default constructor, sets up the dragger nodekit catalog with the interaction and feedback geometry.

SoCenterballDragger::~SoCenterballDragger (  )  [protected]

Protected destructor. (Dragger classes are derived from SoBase, so they are reference counted and automatically destroyed when their reference count goes to 0.)

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Member Function Documentation

void SoCenterballDragger::initClass (  void )  [static]

Initializes type system for this dragger class. Application programmers should usually not have to invoke this method, see documentation of SoInteraction::initClass(). Reimplemented from SoDragger.

void SoCenterballDragger::saveStartParameters (  void )  [virtual]

This is invoked to save start parameters, to enable draggers to calculate relative motion. Default method in superclass SoDragger just saves the motion matrix, but subclasses should overload this method if other data needs to be saved. Reimplemented from SoDragger.

void SoCenterballDragger::transferCenterDraggerMotion (  SoDragger * childdragger )  [protected]

Should be called after motion matrix has been updated by a child dragger.

void SoCenterballDragger::setSwitches (  SoDragger * activechild )  [protected]

Sets values for the internal SoSwitch parts. If activechild == NULL, all feedback is deactivated.

SbBool SoCenterballDragger::setUpConnections (  SbBool onoff, SbBool doitalways = FALSE )  [protected, virtual]

Sets up all internal connections for instances of this class. (This method will usually not be of interest to the application programmer, unless you want to extend the library with new custom nodekits or dragger classes. If so, see the SoBaseKit class documentation.) Reimplemented from SoInteractionKit.

void SoCenterballDragger::setDefaultOnNonWritingFields (  void )  [protected, virtual]

(Be aware that this method is unlikely to be of interest to the application programmer who does not want to extend the library with new custom nodekits or draggers. If you indeed are writing extensions, see the information in the SoBaseKit class documentation.) A virtual method that should call SoField::setDefault() with argument TRUE on part fields that should not be written upon scenegraph export operations. This is typically done when: field value is NULL and part is NULL by default it is a leaf SoGroup or SoSeparator node with no children it is a leaf listpart with no children and a SoGroup or SoSeparator container it is a non-leaf part and it's of SoGroup type and all fields are at their default values Subclasses should usually override this to do additional settings for new member fields. From the subclass, do remember to call "upwards" to your superclass' setDefaultOnNonWritingFields() method. Reimplemented from SoDragger.

void SoCenterballDragger::fieldSensorCB (  void * d, SoSensor * s )  [static, protected]

For internal use only. Reimplemented from SoInteractionKit.

void SoCenterballDragger::valueChangedCB (  void * f, SoDragger * d )  [static, protected]

For internal use only.

void SoCenterballDragger::kidStartCB (  void * d, SoDragger * child )  [static, protected]

For internal use only.

void SoCenterballDragger::kidFinishCB (  void * d, SoDragger * child )  [static, protected]

For internal use only.

void SoCenterballDragger::getBoundingBox (  SoGetBoundingBoxAction * action )  [protected, virtual]

Overloaded to ignore dragger bounding box if SoDragger::isIgnoreInBbox() is TRUE. Reimplemented from SoDragger.

void SoCenterballDragger::getMatrix (  SoGetMatrixAction * action )  [protected, virtual]

Action method for SoGetMatrixAction. Updates action by accumulating with the transformation matrix of this node (if any). Reimplemented from SoDragger.

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Member Data Documentation

SoSFRotation SoCenterballDragger::rotation

This field is continuously updated to contain the rotation of the ball.

SoSFVec3f SoCenterballDragger::center

Continuously updated to contain the current translation from the dragger's internal local origo position.

SoFieldSensor * SoCenterballDragger::rotFieldSensor [protected]

For internal use only.

SoFieldSensor * SoCenterballDragger::centerFieldSensor [protected]

For internal use only.

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The documentation for this class was generated from the following files:

• SoCenterballDragger.cpp
• SoCenterballDragger.h

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