The SoVRMLProximitySensor class is used to generate events when the viewer enters or exits a region. More...

#include <Inventor/VRMLnodes/SoVRMLProximitySensor.h>

Inheritance diagram for SoVRMLProximitySensor:

Public Member Functions
	SoVRMLProximitySensor (void)

virtual SbBool	affectsState (void) const

virtual void	callback (SoCallbackAction *action)

virtual void	doAction (SoAction *action)

virtual void	getBoundingBox (SoGetBoundingBoxAction *action)

virtual SoType	getTypeId (void) const

virtual void	GLRender (SoGLRenderAction *action)

virtual void	rayPick (SoRayPickAction *action)

Public Member Functions inherited from SoNode
virtual SoNode *	addToCopyDict (void) const

virtual void	audioRender (SoAudioRenderAction *action)

virtual SoNode *	copy (SbBool copyconnections=FALSE) const

virtual void	copyContents (const SoFieldContainer *from, SbBool copyconnections)

virtual SoFieldContainer *	copyThroughConnection (void) const

virtual SoChildList *	getChildren (void) const

virtual void	getMatrix (SoGetMatrixAction *action)

SbUniqueId	getNodeId (void) const

NodeType	getNodeType (void) const

virtual void	getPrimitiveCount (SoGetPrimitiveCountAction *action)

virtual void	GLRenderBelowPath (SoGLRenderAction *action)

virtual void	GLRenderInPath (SoGLRenderAction *action)

virtual void	GLRenderOffPath (SoGLRenderAction *action)

virtual void	grabEventsCleanup (void)

virtual void	grabEventsSetup (void)

virtual void	handleEvent (SoHandleEventAction *action)

SbBool	isOverride (void) const

virtual void	pick (SoPickAction *action)

virtual void	search (SoSearchAction *action)

void	setNodeType (const NodeType type)

void	setOverride (const SbBool state)

virtual void	startNotify (void)

virtual void	write (SoWriteAction *action)

virtual void	writeInstance (SoOutput *out)

Public Member Functions inherited from SoFieldContainer
virtual void	addWriteReference (SoOutput *out, SbBool isfromfield=FALSE)

void	copyFieldValues (const SoFieldContainer *container, SbBool copyconnections=FALSE)

SbBool	enableNotify (const SbBool flag)

SbBool	fieldsAreEqual (const SoFieldContainer *container) const

void	get (SbString &fielddata)

void	get (SbString &fielddata, SoOutput *out)

virtual int	getAllFields (SoFieldList &l) const

virtual SoField *	getEventIn (const SbName &name) const

virtual SoField *	getEventOut (const SbName &name) const

virtual SoField *	getField (const SbName &name) const

SbBool	getFieldName (const SoField *const field, SbName &name) const

virtual int	getFields (SoFieldList &l) const

virtual void	getFieldsMemorySize (size_t &managed, size_t &unmanaged) const

SbBool	getIsBuiltIn (void) const

void *	getUserData (void) const

SbBool	hasDefaultValues (void) const

SbBool	isNotifyEnabled (void) const

SbBool	set (const char *const fielddata)

SbBool	set (const char fielddata, SoInput input)

void	setToDefaults (void)

void	setUserData (void *userdata) const

virtual SbBool	validateNewFieldValue (SoField field, void newval)

Public Member Functions inherited from SoBase
void	addAuditor (void *const auditor, const SoNotRec::Type type)

void	assertAlive (void) const

const SoAuditorList &	getAuditors (void) const

virtual SbName	getName (void) const

int32_t	getRefCount (void) const

SbBool	isOfType (SoType type) const
	Returns `TRUE` if the type of this object is either of the same type or inherited from type.

void	ref (void) const

void	removeAuditor (void *const auditor, const SoNotRec::Type type)

virtual void	setName (const SbName &newname)

SbBool	shouldWrite (void)

void	touch (void)

void	unref (void) const

void	unrefNoDelete (void) const

Static Public Member Functions
static SoType	getClassTypeId (void)

static void	initClass (void)

Static Public Member Functions inherited from SoNode
static void	audioRenderS (SoAction action, SoNode node)

static void	callbackS (SoAction action, SoNode node)

static int	getActionMethodIndex (const SoType type)

static void	getBoundingBoxS (SoAction action, SoNode node)

static SoNode *	getByName (const SbName &name)

static int	getByName (const SbName &name, SoNodeList &l)

static SoType	getClassTypeId (void)

static uint32_t	getCompatibilityTypes (const SoType &nodetype)

static void	getMatrixS (SoAction action, SoNode node)

static SbUniqueId	getNextNodeId (void)

static void	getPrimitiveCountS (SoAction action, SoNode node)

static void	GLRenderS (SoAction action, SoNode node)

static void	handleEventS (SoAction action, SoNode node)

static void	initClass (void)
	Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system.

static void	initClasses (void)

static void	pickS (SoAction action, SoNode node)

static void	rayPickS (SoAction action, SoNode node)

static void	searchS (SoAction action, SoNode node)

static void	writeS (SoAction action, SoNode node)

Static Public Member Functions inherited from SoFieldContainer
static void	addCopy (const SoFieldContainer orig, const SoFieldContainer copy)

static SoFieldContainer *	checkCopy (const SoFieldContainer *orig)

static void	cleanupClass (void)

static void	copyDone (void)

static SoFieldContainer *	findCopy (const SoFieldContainer *orig, const SbBool copyconnections)

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

static void	initClass (void)
	Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system.

static void	initCopyDict (void)

Static Public Member Functions inherited from SoBase
static void	addName (SoBase const base, const char const name)

static SbBool	connectRoute (SoInput *input, const SbName &fromnodename, const SbName &fromfieldname, const SbName &tonodename, const SbName &tofieldname)

static void	decrementCurrentWriteCounter (void)

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

static SoBase *	getNamedBase (const SbName &name, SoType type)

static int	getNamedBases (const SbName &name, SoBaseList &baselist, SoType type)

static SbBool	getTraceRefs (void)

static void	incrementCurrentWriteCounter (void)

static void	initClass (void)
	Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system.

static SbBool	read (SoInput input, SoBase &base, SoType expectedtype)

static SbBool	readRoute (SoInput *input)

static void	removeName (SoBase const base, const char const name)

static void	setInstancePrefix (const SbString &c)

static void	setTraceRefs (SbBool trace)

Public Attributes
SoSFVec3f	center

SoSFBool	enabled

SoSFTime	enterTime

SoSFTime	exitTime

SoSFBool	isActive

SoSFRotation	orientation_changed

SoSFVec3f	position_changed

SoSFVec3f	size

Protected Member Functions
virtual	~SoVRMLProximitySensor ()

virtual const SoFieldData *	getFieldData (void) const

virtual void	notify (SoNotList *list)

Protected Member Functions inherited from SoNode
	SoNode (void)

virtual	~SoNode ()

virtual SbBool	readInstance (SoInput *in, unsigned short flags)

Protected Member Functions inherited from SoFieldContainer
	SoFieldContainer (void)

virtual	~SoFieldContainer ()

Protected Member Functions inherited from SoBase
	SoBase (void)

virtual	~SoBase ()

virtual SoNotRec	createNotRec (void)

virtual void	destroy (void)

virtual const char *	getFileFormatName (void) const

SbBool	hasMultipleWriteRefs (void) const

void	writeFooter (SoOutput *out) const

SbBool	writeHeader (SoOutput *out, SbBool isgroup, SbBool isengine) const

Static Protected Member Functions
static const SoFieldData **	getFieldDataPtr (void)

Static Protected Member Functions inherited from SoNode
static const SoFieldData **	getFieldDataPtr (void)

static int	getNextActionMethodIndex (void)

static void	incNextActionMethodIndex (void)

static void	setCompatibilityTypes (const SoType &nodetype, const uint32_t bitmask)

static void	setNextActionMethodIndex (int index)

Static Protected Member Functions inherited from SoBase
static uint32_t	getCurrentWriteCounter (void)

static void	staticDataLock (void)

static void	staticDataUnlock (void)

Additional Inherited Members
Public Types inherited from SoNode
enum	NodeType { INVENTOR = 0x0000 , VRML1 = 0x0001 , VRML2 = 0x0002 , INVENTOR_1 = 0x0004 , INVENTOR_2_0 = 0x0008 , INVENTOR_2_1 = 0x0010 , INVENTOR_2_5 = 0x0020 , INVENTOR_2_6 = 0x0040 , COIN_1_0 = 0x0080 , COIN_2_0 = 0x0100 , EXTENSION = 0x0200 , COIN_2_2 = 0x0400 , COIN_2_3 = 0x0800 , COIN_2_4 = 0x1000 , INVENTOR_5_0 = 0x2000 , COIN_2_5 = 0x4000 , COIN_3_0 = 0x8000 , INVENTOR_6_0 = 0x10000 , COIN_4_0 = 0x20000 }

Protected Types inherited from SoBase
enum	BaseFlags { IS_ENGINE = 0x01 , IS_GROUP = 0x02 }

Protected Attributes inherited from SoNode
SbUniqueId	uniqueId

Protected Attributes inherited from SoFieldContainer
SbBool	isBuiltIn

Static Protected Attributes inherited from SoNode
static int	nextActionMethodIndex = 0

static SbUniqueId	nextUniqueId = 1

Detailed Description

The SoVRMLProximitySensor class is used to generate events when the viewer enters or exits a region.

The detailed class documentation is taken verbatim from the VRML97 standard (ISO/IEC 14772-1:1997). It is copyright The Web3D Consortium, and is used by permission of the Consortium:

ProximitySensor {
  exposedField SFVec3f    center      0 0 0    # (-,)
  exposedField SFVec3f    size        0 0 0    # [0,)
  exposedField SFBool     enabled     TRUE
  eventOut     SFBool     isActive
  eventOut     SFVec3f    position_changed
  eventOut     SFRotation orientation_changed
  eventOut     SFTime     enterTime
  eventOut     SFTime     exitTime
}

The ProximitySensor node generates events when the viewer enters, exits, and moves within a region in space (defined by a box).

A proximity sensor is enabled or disabled by sending it an enabled event with a value of TRUE or FALSE. A disabled sensor does not send events.

A ProximitySensor node generates isActive TRUE/FALSE events as the viewer enters and exits the rectangular box defined by its center and size fields. Browsers shall interpolate viewer positions and timestamp the isActive events with the exact time the viewer first intersected the proximity region.

The center field defines the centre point of the proximity region in object space. The size field specifies a vector which defines the width (x), height (y), and depth (z) of the box bounding the region. The components of the size field shall be greater than or equal to zero. ProximitySensor nodes are affected by the hierarchical transformations of their parents.

The enterTime event is generated whenever the isActive TRUE event is generated (user enters the box), and exitTime events are generated whenever an isActive FALSE event is generated (user exits the box).

The position_changed and orientation_changed eventOuts send events whenever the user is contained within the proximity region and the position and orientation of the viewer changes with respect to the ProximitySensor node's coordinate system including enter and exit times.

The viewer movement may be a result of a variety of circumstances resulting from browser navigation, ProximitySensor node's coordinate system changes, or bound Viewpoint node's position or orientation changes.

Each ProximitySensor node behaves independently of all other ProximitySensor nodes. Every enabled ProximitySensor node that is affected by the viewer's movement receives and sends events, possibly resulting in multiple

ProximitySensor nodes receiving and sending events simultaneously. Unlike TouchSensor nodes, there is no notion of a ProximitySensor node lower in the scene graph "grabbing" events.

Instanced (DEF/USE) ProximitySensor nodes use the union of all the boxes to check for enter and exit. A multiply instanced ProximitySensor node will detect enter and exit for all instances of the box and send enter/exit events appropriately. However, the results are undefined if the any of the boxes of a multiply instanced ProximitySensor node overlap.

A ProximitySensor node that surrounds the entire world has an enterTime equal to the time that the world was entered and can be used to start up animations or behaviours as soon as a world is loaded.

A ProximitySensor node with a box containing zero volume (i.e., any size field element of 0.0) cannot generate events. This is equivalent to setting the enabled field to FALSE.

A ProximitySensor read from a VRML file shall generate isActive TRUE, position_changed, orientation_changed and enterTime events if the sensor is enabled and the viewer is inside the proximity region.

A ProximitySensor inserted into the transformation hierarchy shall generate isActive TRUE, position_changed, orientation_changed and enterTime events if the sensor is enabled and the viewer is inside the proximity region.

A ProximitySensor removed from the transformation hierarchy shall generate isActive FALSE, position_changed, orientation_changed and exitTime events if the sensor is enabled and the viewer is inside the proximity region.

Constructor & Destructor Documentation

◆ SoVRMLProximitySensor()

SoVRMLProximitySensor::SoVRMLProximitySensor ( void )

Constructor.

◆ ~SoVRMLProximitySensor()

SoVRMLProximitySensor::~SoVRMLProximitySensor ( )

protectedvirtual

Destructor.

Member Function Documentation

◆ affectsState()

SbBool SoVRMLProximitySensor::affectsState ( void ) const

virtual

Returns TRUE if the node could have any effect on the state during traversal.

If it returns FALSE, no data in the traversal state will change from the pre-traversal state to the post-traversal state. The SoSeparator node will for instance return FALSE, as it pushes and pops the state before and after traversal of its children. All SoShape nodes will also return FALSE, as just pushing out geometry data to the rendering engine won't affect the actual rendering state.

The default method returns TRUE, on a "better safe than sorry" philosophy.

Reimplemented from SoNode.

◆ callback()

void SoVRMLProximitySensor::callback ( SoCallbackAction * action )

virtual

Action method for SoCallbackAction.

Simply updates the state according to how the node behaves for the render action, so the application programmer can use the SoCallbackAction for extracting information about the scene graph.

Reimplemented from SoNode.

◆ doAction()

void SoVRMLProximitySensor::doAction ( SoAction * action )

virtual

This function performs the typical operation of a node for any action.

Reimplemented from SoNode.

◆ getBoundingBox()

void SoVRMLProximitySensor::getBoundingBox ( SoGetBoundingBoxAction * action )

virtual

Action method for the SoGetBoundingBoxAction.

Calculates bounding box and center coordinates for node and modifies the values of the action to encompass the bounding box for this node and to shift the center point for the scene more towards the one for this node.

Nodes influencing how geometry nodes calculate their bounding box also override this method to change the relevant state variables.

Reimplemented from SoNode.

◆ getClassTypeId()

SoType SoVRMLProximitySensor::getClassTypeId ( void )

static

This static method returns the SoType object associated with objects of this class.

◆ getFieldData()

const SoFieldData * SoVRMLProximitySensor::getFieldData ( void ) const

protectedvirtual

Returns a pointer to the class-wide field data storage object for this instance. If no fields are present, returns NULL.

Reimplemented from SoFieldContainer.

◆ getFieldDataPtr()

const SoFieldData ** SoVRMLProximitySensor::getFieldDataPtr ( void )

staticprotected

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.

◆ getTypeId()

SoType SoVRMLProximitySensor::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.

Implements SoBase.

◆ GLRender()

void SoVRMLProximitySensor::GLRender ( SoGLRenderAction * action )

virtual

Action method for the SoGLRenderAction.

This is called during rendering traversals. Nodes influencing the rendering state in any way or want to throw geometry primitives at OpenGL override this method.

Reimplemented from SoNode.

◆ initClass()

void SoVRMLProximitySensor::initClass ( void )

static

◆ notify()

void SoVRMLProximitySensor::notify ( SoNotList * l )

protectedvirtual

Notifies all auditors for this instance when changes are made.

Reimplemented from SoNode.

◆ rayPick()

void SoVRMLProximitySensor::rayPick ( SoRayPickAction * action )

virtual

Action method for SoRayPickAction.

Checks the ray specification of the action and tests for intersection with the data of the node.

Nodes influencing relevant state variables for how picking is done also override this method.

Reimplemented from SoNode.

Member Data Documentation

◆ center

SoSFVec3f SoVRMLProximitySensor::center

The center of the region. Default value is (0,0,0).

◆ enabled

SoSFBool SoVRMLProximitySensor::enabled

Enable/disable sensor. Default value is TRUE.

◆ enterTime

SoSFTime SoVRMLProximitySensor::enterTime

An eventOut that is sent when the viewer enters the region.

◆ exitTime

SoSFTime SoVRMLProximitySensor::exitTime

An eventOut that is sent when the viewer exits the region.

◆ isActive

SoSFBool SoVRMLProximitySensor::isActive

An eventOut that is sent every time the sensor changes state.

◆ orientation_changed

SoSFRotation SoVRMLProximitySensor::orientation_changed

An eventOut that is sent when the viewer is inside the region and the viewer position or orientation is changed.

◆ position_changed

SoSFVec3f SoVRMLProximitySensor::position_changed

An eventOut that is sent when the viewer is inside the region and the viewer position or orientation is changed.

◆ size

SoSFVec3f SoVRMLProximitySensor::size

The region size. Default value is (0, 0, 0).

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

SoVRMLProximitySensor.h
ProximitySensor.cpp

Public Member Functions

Static Public Member Functions

Public Attributes

Protected Member Functions

Static Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ SoVRMLProximitySensor()

◆ ~SoVRMLProximitySensor()

Member Function Documentation

◆ affectsState()

◆ callback()

◆ doAction()

◆ getBoundingBox()

◆ getClassTypeId()

◆ getFieldData()

◆ getFieldDataPtr()

◆ getTypeId()

◆ GLRender()

◆ initClass()

◆ notify()

◆ rayPick()

Member Data Documentation

◆ center

◆ enabled

◆ enterTime

◆ exitTime

◆ isActive

◆ orientation_changed

◆ position_changed

◆ size