SoDragPointDragger(3)

NAME
SoDragPointDragger - The SoDragPointDragger class provides mechanisms for moving a point in 3D.

SYNOPSIS

#include <Inventor/draggers/SoDragPointDragger.h>

Inherits SoDragger.

  Public Member Functions
virtual SoType getTypeId (void) const
virtual const SoNodekitCatalog * getNodekitCatalog (void) const
SoDragPointDragger (void)
void setJumpLimit (const float limit)
float getJumpLimit (void) const
void showNextDraggerSet (void)

  Static Public Member Functions
static SoType getClassTypeId (void)
static const SoNodekitCatalog * getClassNodekitCatalog (void)
static void initClass (void)

  Public Attributes
SoSFVec3f translation

  Protected Member Functions
virtual const SoFieldData * getFieldData (void) const
virtual ~SoDragPointDragger (void)
virtual SbBool setUpConnections (SbBool onoff, SbBool doitalways=FALSE)
virtual void setDefaultOnNonWritingFields (void)
void dragStart (void)
void drag (void)
void dragFinish (void)

  Static Protected Member Functions
static const SoFieldData ** getFieldDataPtr (void)
static const SoNodekitCatalog ** getClassNodekitCatalogPtr (void)
static void startCB (void *f, SoDragger *d)
static void motionCB (void *f, SoDragger *d)
static void finishCB (void *f, SoDragger *d)
static void metaKeyChangeCB (void *f, SoDragger *d)
static void fieldSensorCB (void *f, SoSensor *s)
static void valueChangedCB (void *f, SoDragger *d)

  Protected Attributes
SoSFNode noRotSep
SoSFNode planeFeedbackSep
SoSFNode planeFeedbackSwitch
SoSFNode planeFeedbackTranslation
SoSFNode rotX
SoSFNode rotXSep
SoSFNode rotY
SoSFNode rotYSep
SoSFNode rotZ
SoSFNode rotZSep
SoSFNode xFeedback
SoSFNode xFeedbackSep
SoSFNode xFeedbackSwitch
SoSFNode xFeedbackTranslation
SoSFNode xTranslator
SoSFNode xTranslatorSwitch
SoSFNode xyFeedback
SoSFNode xyTranslator
SoSFNode xyTranslatorSwitch
SoSFNode xzFeedback
SoSFNode xzTranslator
SoSFNode xzTranslatorSwitch
SoSFNode yFeedback
SoSFNode yFeedbackSep
SoSFNode yFeedbackSwitch
SoSFNode yFeedbackTranslation
SoSFNode yTranslator
SoSFNode yTranslatorSwitch
SoSFNode yzFeedback
SoSFNode yzTranslator
SoSFNode yzTranslatorSwitch
SoSFNode zFeedback
SoSFNode zFeedbackSep
SoSFNode zFeedbackSwitch
SoSFNode zFeedbackTranslation
SoSFNode zTranslator
SoSFNode zTranslatorSwitch
SoFieldSensor * fieldSensor

  Additional Inherited Members

Detailed Description

The SoDragPointDragger class provides mechanisms for moving a point in 3D. Here's how the dragger looks with its default geometry in the inactive state:

 Screen Shot of Default Dragger

This dragger is convenient to use when it is desirable that the end-user should interact with points by positioning them freely in 3D space.

The dragger consists of a part for 2D motion in a plane (like the SoTranslate2Dragger) and another part on the axis normal to the plane.

While the dragger is inactive (i.e. the user is not currently grabbing and / or dragging its parts), the CTRL keys on the keyboard can be used to switch the orientation of the 2D-plane part and the normal-axis part so the normal-axis part points along one of the other principal axes. This is done by position the mouse pointer over the dragger geometry and pressing and releasing a CTRL key.

Constructor & Destructor Documentation

  SoDragPointDragger::SoDragPointDragger (void)
Default constructor, sets up the dragger nodekit catalog with the interaction and feedback geometry.

Nodekit structure (new entries versus parent class marked with arrow prefix):

CLASS SoDragPointDragger
-->'this'
      'callbackList'
      'topSeparator'
         'motionMatrix'
-->      'noRotSep'
-->         'xTranslatorSwitch'
-->            'xTranslator'
-->         'xyTranslatorSwitch'
-->            'xyTranslator'
-->      'rotXSep'
-->         'rotX'
-->         'xzTranslatorSwitch'
-->            'xzTranslator'
-->      'rotYSep'
-->         'rotY'
-->         'zTranslatorSwitch'
-->            'zTranslator'
-->         'yzTranslatorSwitch'
-->            'yzTranslator'
-->      'rotZSep'
-->         'rotZ'
-->         'yTranslatorSwitch'
-->            'yTranslator'
-->      'xFeedbackSwitch'
-->         'xFeedbackSep'
-->            'xFeedbackTranslation'
-->            'xFeedback'
-->      'yFeedbackSwitch'
-->         'yFeedbackSep'
-->            'yFeedbackTranslation'
-->            'yFeedback'
-->      'zFeedbackSwitch'
-->         'zFeedbackSep'
-->            'zFeedbackTranslation'
-->            'zFeedback'
-->      'planeFeedbackSep'
-->         'planeFeedbackTranslation'
-->         'planeFeedbackSwitch'
-->            'yzFeedback'
-->            'xzFeedback'
-->            'xyFeedback'
         'geomSeparator'

(See SoBaseKit::printDiagram() for information about the output formatting.)

Detailed information on catalog parts:

CLASS SoDragPointDragger
PVT   'this',  SoDragPointDragger  ---
      'callbackList',  SoNodeKitListPart [ SoCallback, SoEventCallback ]
PVT   'topSeparator',  SoSeparator  ---
PVT   'motionMatrix',  SoMatrixTransform  ---
PVT   'noRotSep',  SoSeparator  ---
PVT   'xTranslatorSwitch',  SoSwitch  ---
      'xTranslator',  SoTranslate1Dragger  ---
PVT   'xyTranslatorSwitch',  SoSwitch  ---
      'xyTranslator',  SoTranslate2Dragger  ---
PVT   'rotXSep',  SoSeparator  ---
PVT   'rotX',  SoRotation  ---
PVT   'xzTranslatorSwitch',  SoSwitch  ---
      'xzTranslator',  SoTranslate2Dragger  ---
PVT   'rotYSep',  SoSeparator  ---
PVT   'rotY',  SoRotation  ---
PVT   'zTranslatorSwitch',  SoSwitch  ---
      'zTranslator',  SoTranslate1Dragger  ---
PVT   'yzTranslatorSwitch',  SoSwitch  ---
      'yzTranslator',  SoTranslate2Dragger  ---
PVT   'rotZSep',  SoSeparator  ---
PVT   'rotZ',  SoRotation  ---
PVT   'yTranslatorSwitch',  SoSwitch  ---
      'yTranslator',  SoTranslate1Dragger  ---
PVT   'xFeedbackSwitch',  SoSwitch  ---
PVT   'xFeedbackSep',  SoSeparator  ---
PVT   'xFeedbackTranslation',  SoTranslation  ---
      'xFeedback',  SoSeparator  ---
PVT   'yFeedbackSwitch',  SoSwitch  ---
PVT   'yFeedbackSep',  SoSeparator  ---
PVT   'yFeedbackTranslation',  SoTranslation  ---
      'yFeedback',  SoSeparator  ---
PVT   'zFeedbackSwitch',  SoSwitch  ---
PVT   'zFeedbackSep',  SoSeparator  ---
PVT   'zFeedbackTranslation',  SoTranslation  ---
      'zFeedback',  SoSeparator  ---
PVT   'planeFeedbackSep',  SoSeparator  ---
PVT   'planeFeedbackTranslation',  SoTranslation  ---
PVT   'planeFeedbackSwitch',  SoSwitch  ---
      'yzFeedback',  SoSeparator  ---
      'xzFeedback',  SoSeparator  ---
      'xyFeedback',  SoSeparator  ---
PVT   'geomSeparator',  SoSeparator  ---

(See SoBaseKit::printTable() for information about the output formatting.)

  SoDragPointDragger::~SoDragPointDragger (void) [protected], [virtual]
Protected destructor.

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

Member Function Documentation

  SoType SoDragPointDragger::getClassTypeId (void) [static]
This static method returns the SoType object associated with objects of this class.

  SoType SoDragPointDragger::getTypeId (void) const [virtual]
Returns the type identification of an object derived from a class inheriting SoBase. This is used for runtime type checking and 'downward' casting.

Reimplemented from SoDragger.

  const SoFieldData ** SoDragPointDragger::getFieldDataPtr (void) [static], [protected]
This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.
 Returns the SoFieldData class which holds information about fields in this node.

  const SoFieldData * SoDragPointDragger::getFieldData (void) const [protected], [virtual]
Returns a pointer to the class-wide field data storage object for this instance. If no fields are present, returns NULL.

Reimplemented from SoDragger.

  const SoNodekitCatalog * SoDragPointDragger::getClassNodekitCatalog (void) [static]
Returns the nodekit catalog which defines the layout of this class' kit.

  const SoNodekitCatalog * SoDragPointDragger::getNodekitCatalog (void) const [virtual]
Returns the nodekit catalog which defines the layout of this class' kit.

Reimplemented from SoDragger.

  const SoNodekitCatalog ** SoDragPointDragger::getClassNodekitCatalogPtr (void) [static], [protected]
Returns the pointer to the pointer of the nodekit catalog for this class.

  void SoDragPointDragger::initClass (void) [static]
Initializes type system for this dragger class.

Application programmers should usually not have to invoke this method, see documentation of SoInteraction::init().

  void SoDragPointDragger::setJumpLimit (const float limit)
The dragger plane jump limit is ignored in Coin, as we use a continuous moving plane.

This method still included for API compatibility with the original SGI Inventor API.

  float SoDragPointDragger::getJumpLimit (void) const
The dragger plane jump limit is ignored in Coin, as we use a continuous moving plane.

This method still included for API compatibility with the original SGI Inventor API.

  void SoDragPointDragger::showNextDraggerSet (void)
Circulate the dragger's three different sets of geometry, to circulate the orientation of the translation axis and translation plane through the three principal axes.

This function is triggered when the user taps the CTRL key.

  SbBool SoDragPointDragger::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 SoDragPointDragger::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.)

This is a virtual method, and the code in it should call SoField::setDefault() with argument TRUE on part fields that should not be written upon scene graph export operations.

This is typically done when:

1.  field value is NULL and part is NULL by default
2.  it is a leaf SoGroup or SoSeparator node with no children
3.  it is a leaf listpart with no children and an SoGroup or SoSeparator container
4.  it is a non-leaf part and it is 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 SoDragPointDragger::dragStart (void) [protected]
This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.
Called when dragger is selected (picked) by the user.

  void SoDragPointDragger::drag (void) [protected]
This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.
Called when user drags the mouse after picking the dragger.

  void SoDragPointDragger::dragFinish (void) [protected]
This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.
Called when mouse button is released after picking and interacting with the dragger.

  void SoDragPointDragger::startCB (void * d, SoDragger * d) [static], [protected]
This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.

  void SoDragPointDragger::motionCB (void * d, SoDragger * d) [static], [protected]
This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.

  void SoDragPointDragger::finishCB (void * d, SoDragger * d) [static], [protected]
This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.

  void SoDragPointDragger::metaKeyChangeCB (void * d, SoDragger * d) [static], [protected]
This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.

  void SoDragPointDragger::fieldSensorCB (void * d, SoSensor * s) [static], [protected]
This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.

  void SoDragPointDragger::valueChangedCB (void * f, SoDragger * d) [static], [protected]
This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.

Member Data Documentation

  SoSFVec3f SoDragPointDragger::translation
Continuously updated to contain the current translation from the dragger's local origo position.
The application programmer applying this dragger in his code should connect the relevant node fields in the scene to this field to make it follow the dragger.

  SoFieldSensor * SoDragPointDragger::fieldSensor [protected]
This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.

Author
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