sovrmldragsensor(3)
NAME
SoVRMLDragSensor
SYNOPSIS
#include <Inventor/VRMLnodes/SoVRMLDragSensor.h> Inherits SoVRMLSensor. Inherited by SoVRMLCylinderSensor, SoVRMLPlaneSensor, and SoVRMLSphereSensor.
Detailed Description
The SoVRMLDragSensor class is a superclass for VRML drag sensors.
This class collects the two fields that are common for some of the
sensor nodes, plus some common functions for these. Since this is an
abstract 'helper' class, it does not represent an actual node from the
VRML97 specification, so don't use it as such.
For more information, a detailed discussion of drag sensors is
available in section 4.6.7.4 of the VRML97 specification:
- <http://www.web3d.org/x3d/specifications/vrml/ISOIEC-14772-VRML97/part1/concepts.html#4.6.7.4>.
- Public Member Functions
- virtual SoType getTypeId (void) const
virtual void handleEvent (SoHandleEventAction *action) - Static Public Member Functions
- static SoType getClassTypeId (void) static void initClass (void)
- Public Attributes
- SoSFVec3f trackPoint_changed SoSFBool autoOffset
- Protected Member Functions
- virtual const SoFieldData * getFieldData (void) const
virtual SbBool dragStart (void)=0
virtual void drag (void)=0
virtual void dragFinish (void)=0
SoVRMLDragSensor (void)
virtual ~SoVRMLDragSensor ()
const SbVec3f & getLocalStartingPoint (void) const const SbMatrix & getLocalToWorldMatrix (void) const const SbMatrix & getWorldToLocalMatrix (void) const const SbViewVolume & getViewVolume (void) const const SbVec2f & getNormalizedLocaterPosition (void) const - Static Protected Member Functions
- static const SoFieldData ** getFieldDataPtr (void)
Constructor & Destructor Documentation
- SoVRMLDragSensor::SoVRMLDragSensor (void) [protected]
- Constructor.
- References autoOffset, and trackPoint_changed.
- SoVRMLDragSensor::~SoVRMLDragSensor () [protected, virtual]
- Destructor.
Member Function Documentation
- SoType SoVRMLDragSensor::getClassTypeId (void) [static]
- This static method returns the SoType object associated with objects of this class.
- Reimplemented from SoVRMLSensor.
- Reimplemented in SoVRMLCylinderSensor, SoVRMLPlaneSensor, and SoVRMLSphereSensor.
- SoType SoVRMLDragSensor::getTypeId (void) const [virtual]
- Returns the type identification of an object derived from a class
inheriting SoBase. This is used for run-time type checking and 'downward' casting. - Usage example:
void foo(SoNode * node)
{if (node->getTypeId() == SoFile::getClassTypeId()) {SoFile * filenode = (SoFile *)node; // safe downward cast, knows the type}
else if (node->getTypeId().isOfType(SoGroup::getClassTypeId())) {SoGroup * group = (SoGroup *)node; // safe downward cast, knows the type}} - For application programmers wanting to extend the library with new
nodes, engines, nodekits, draggers or others: this method needs to be
overridden in all subclasses. This is typically done as part of setting up the full type system for extension classes, which is usually
accomplished by using the pre-defined macros available through for
instance Inventor/nodes/SoSubNode.h (SO_NODE_INIT_CLASS and
SO_NODE_CONSTRUCTOR for node classes), Inventor/engines/SoSubEngine.h (for engine classes) and so on. - For more information on writing Coin extensions, see the class
documentation of the toplevel superclasses for the various class
groups. - Reimplemented from SoVRMLSensor.
- Reimplemented in SoVRMLCylinderSensor, SoVRMLPlaneSensor, and SoVRMLSphereSensor.
- const SoFieldData ** SoVRMLDragSensor::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. - Reimplemented from SoVRMLSensor.
- Reimplemented in SoVRMLCylinderSensor, SoVRMLPlaneSensor, and SoVRMLSphereSensor.
- const SoFieldData * SoVRMLDragSensor::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 SoVRMLSensor.
- Reimplemented in SoVRMLCylinderSensor, SoVRMLPlaneSensor, and SoVRMLSphereSensor.
- void SoVRMLDragSensor::handleEvent (SoHandleEventAction * action) [virtual]
- Action method for SoHandleEventAction.
- Inspects the event data from action, and processes it if it is something which this node should react to.
- Nodes influencing relevant state variables for how event handling is
done also overrides this method. - Reimplemented from SoNode.
- References dragFinish(), SoSFBool::getValue(), and
SoNode::handleEvent(). - void SoVRMLDragSensor::initClass (void) [static]
- Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system.
- Reimplemented from SoVRMLSensor.
- Reimplemented in SoVRMLCylinderSensor, SoVRMLPlaneSensor, and SoVRMLSphereSensor.
- SbBool SoVRMLDragSensor::dragStart (void) [protected, pure virtual]
- 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.
- Implemented in SoVRMLCylinderSensor, SoVRMLPlaneSensor, and SoVRMLSphereSensor.
- void SoVRMLDragSensor::drag (void) [protected, pure virtual]
- 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.
- Implemented in SoVRMLCylinderSensor, SoVRMLPlaneSensor, and SoVRMLSphereSensor.
- void SoVRMLDragSensor::dragFinish (void) [protected, pure virtual]
- 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.
- Implemented in SoVRMLCylinderSensor, SoVRMLPlaneSensor, and SoVRMLSphereSensor.
- Referenced by handleEvent().
- const SbVec3f & SoVRMLDragSensor::getLocalStartingPoint (void) const
- [protected]
Returns the interaction starting point. - Referenced by SoVRMLCylinderSensor::~SoVRMLCylinderSensor(),
SoVRMLPlaneSensor::~SoVRMLPlaneSensor(), and
SoVRMLSphereSensor::~SoVRMLSphereSensor(). - const SbMatrix & SoVRMLDragSensor::getLocalToWorldMatrix (void) const
- [protected]
Returns the matrix that transforms to the world coordinate system. - const SbMatrix & SoVRMLDragSensor::getWorldToLocalMatrix (void) const
- [protected]
Returns the matrix that transforms from the world coordinate system. - const SbViewVolume & SoVRMLDragSensor::getViewVolume (void) const
- [protected]
Returns the current view volume. - const SbVec2f & SoVRMLDragSensor::getNormalizedLocaterPosition (void) const
- [protected]
Returns the current normalized pointer position.
Member Data Documentation
- SoSFVec3f SoVRMLDragSensor::trackPoint_changed
- An event out that is generated when the trackpoint is changed.
- Referenced by SoVRMLDragSensor().
- SoSFBool SoVRMLDragSensor::autoOffset
- When TRUE, the offset field is updated when a dragging sequence is
finished. Default value is TRUE. - Referenced by SoVRMLDragSensor().
Author
- Generated automatically by Doxygen for Coin from the source code.