Class for scale (pinch) gesture events. More...

#include <Inventor/gestures/events/SoScaleGestureEvent.h>

Inheritance diagram for SoScaleGestureEvent:

Public Member Functions
virtual SoType	getTypeId () const
	Returns the type identifier for this specific instance.

	SoScaleGestureEvent ()
	Constructor.

float	getScaleFactor () const
	Gets the ratio between the current fingers distance and the first distance evaluated after the second down event.

float	getDeltaScaleFactor () const
	Gets the ratio between the current fingers distance and the previous distance.

Public Member Functions inherited from SoGestureEvent
	SoGestureEvent ()
	Constructor.

virtual	~SoGestureEvent ()
	Destructor.

GestureState	getGestureState () const
	Gets the gesture event state (Begin,Delta,End).

Public Member Functions inherited from SoEvent
	SoEvent ()
	Constructor.

virtual	~SoEvent ()
	Destructor.

virtual void	setTime (SbTime t)
	Sets the time at which the event occurred.

SbTime	getTime () const
	Gets the time at which the event occurred.

virtual void	setPosition (const SbVec2s &p)
	Sets the window pixel location of the cursor when the event occurred.

virtual void	setPosition (const SbVec2f &p)
	Float version of setPosition(const SbVec2s &p).

const SbVec2s &	getPosition () const
	Returns the window pixel location of the cursor when the event occurred as integer values.

const SbVec2f &	getPositionFloat () const
	Returns the window pixel location of the cursor when the event occurred as float values.

const SbVec2s &	getPosition (const SbViewportRegion &vpRgn) const
	Gets the viewport pixel location of the cursor when the event occurred, relative to the origin of the specified viewport region, as integer values.

const SbVec2f &	getPositionFloat (const SbViewportRegion &vpRgn) const
	Gets the viewport pixel location of the cursor when the event occurred, relative to the origin of the specified viewport region, as float values.

const SbVec2f &	getNormalizedPosition (const SbViewportRegion &vpRgn) const
	Gets the normalized location of the cursor when the event occurred, relative to the specified viewport region.

void	setShiftDown (SbBool isDown)
	Sets whether the shift key was down when the event occurred.

void	setCtrlDown (SbBool isDown)
	Sets whether the CTRL key was down when the event occurred.

void	setAltDown (SbBool isDown)
	Sets whether the ALT key was down when the event occurred.

void	setButton1Down (SbBool isDown)
	Sets whether mouse Button 1 was down when the event occurred.

SbBool	wasShiftDown () const
	Returns true if the shift key was down when the event occurred.

SbBool	wasCtrlDown () const
	Returns true if the CTRL key was down when the event occurred.

SbBool	wasAltDown () const
	Returns true if the ALT key was down when the event occurred.

SbBool	wasButton1Down () const
	Returns true if mouse button 1 was down when the event occurred.

virtual const SbTrackerInfo *	getTrackerInfo () const
	Gets whether an event object has associated tracker information.

SbTrackerInfo *	getTrackerInfo ()
	Gets whether an event object has associated tracker information.

Public Member Functions inherited from SoTypedObject
SbBool	isOfType (const SoType &type) const
	Returns TRUE if this object is of the type specified in type or is derived from that type.

template<typename TypedObjectClass >
SbBool	isOfType () const
	Returns TRUE if this object is of the type of class TypedObjectClass or is derived from that class.

Static Public Member Functions
static SoType	getClassTypeId ()
	Returns the type identifier for this class.

Static Public Member Functions inherited from SoGestureEvent
static SoType	getClassTypeId ()
	Returns the type identifier for this class.

Static Public Member Functions inherited from SoEvent
static SoType	getClassTypeId ()
	Returns the type id for the SoEvent class.

Static Public Member Functions inherited from SoTypedObject
static SoType	getClassTypeId ()
	Returns the type identifier for this class.

Additional Inherited Members
Public Types inherited from SoGestureEvent
enum	GestureState { BEGIN , DELTA , END }
	The different states a gesture event can have. More...

Detailed Description

Class for scale (pinch) gesture events.

SoScaleGestureEvent represents a pinch gesture in the Open Inventor event model. Touch events are analyzed by a SoScaleGestureRecognizer. When a scale gesture is recognized, the recognizer generates this event. The gesture begins with a BEGIN state event. DELTA state events are generated until the end of the gesture which generates an END state event. See SoGestureEvent::getGestureState().

Note:

In order to get touch events for the gesture recognizer(s) to recognize, the application must explicitly register a touch screen device (SoWinTouchScreen, SoQtTouchScreen, etc).
In order to get gesture events, the application must explicitly register gesture recognizers with the touch screen device's touch manager (SoTouchManager).

Constructor & Destructor Documentation

◆ SoScaleGestureEvent()

SoScaleGestureEvent::SoScaleGestureEvent ( )

Constructor.

Member Function Documentation

◆ getClassTypeId()

static SoType SoScaleGestureEvent::getClassTypeId ( )

static

Returns the type identifier for this class.

◆ getDeltaScaleFactor()

float SoScaleGestureEvent::getDeltaScaleFactor ( ) const

Gets the ratio between the current fingers distance and the previous distance.

◆ getScaleFactor()

float SoScaleGestureEvent::getScaleFactor ( ) const

Gets the ratio between the current fingers distance and the first distance evaluated after the second down event.

◆ getTypeId()

virtual SoType SoScaleGestureEvent::getTypeId ( ) const

virtual

Returns the type identifier for this specific instance.

Reimplemented from SoGestureEvent.

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

Inventor/gestures/events/SoScaleGestureEvent.h

Open Inventor Release 2024.2.0

Public Member Functions

Static Public Member Functions

Additional Inherited Members