Touch event contains all touch points associated with the event. Touch events are usually generated by touch screens or touch pads, see TouchDevice. More...

#include <touchevent.h>

Inheritance diagram for inviwo::TouchEvent:

Public Member Functions
	TouchEvent (const std::vector< TouchPoint > &touchPoints, const TouchDevice *source)

virtual TouchEvent *	clone () const override

bool	hasTouchPoints () const

const std::vector< TouchPoint > &	touchPoints () const

std::vector< TouchPoint > &	touchPoints ()

void	setTouchPoints (std::vector< TouchPoint > val)

uvec2	canvasSize () const

dvec2	centerPoint () const
	Computes average position. Returns dvec2(0) if no touch points exist. More...

dvec2	centerPointNormalized () const
	Computes average normalized position. Returns dvec2(0) if no touch points exist. More...

dvec2	prevCenterPointNormalized () const
	Computes previous average normalized position. Returns dvec2(0) if no touch points exist. More...

dvec3	centerNDC () const
	Average of touch points in normalized device coordinates, TouchPoint::ndc() Defined in (-1,1) in a left handed coordinate system. More...

double	averageDepth () const
	Average depth of touch points, TouchPoint::depth() Defined in [-1 1], where -1 is the near plane and 1 is the far plane. More...

const TouchDevice *	getDevice () const
	Return TouchDevice that generated the event.

std::vector< const TouchPoint * >	findClosestTwoTouchPoints () const
	Retrieve pointers to the two closest touch points. More...

virtual uint64_t	hash () const override

virtual void	print (std::ostream &ss) const override

Public Member Functions inherited from inviwo::InteractionEvent
	InteractionEvent (KeyModifiers modifiers=KeyModifiers(flags::empty))

	InteractionEvent (const InteractionEvent &rhs)=default

InteractionEvent &	operator= (const InteractionEvent &that)=default

KeyModifiers	modifiers () const

void	setModifiers (KeyModifiers modifiers)

std::string	modifierNames () const

void	setToolTip (const std::string &tooltip) const

void	setToolTipCallback (ToolTipCallback callback)

const ToolTipCallback &	getToolTipCallback () const

Public Member Functions inherited from inviwo::Event
virtual bool	shouldPropagateTo (Inport inport, Processor processor, Outport *source)

void	markAsUsed ()

bool	hasBeenUsed () const

void	markAsUnused ()

void	markAsVisited (Processor *)

void	markAsVisited (Event &)

bool	hasVisitedProcessor (Processor *) const

const std::vector< Processor * > &	getVisitedProcessors () const

template<typename EventType >
EventType *	getAs ()

template<typename EventType >
const EventType *	getAs () const

Static Public Member Functions
static PickingState	getPickingState (const std::vector< TouchPoint > &points)
	Get PickingState by analyzing all touch points. More...

static constexpr uint64_t	chash ()

Additional Inherited Members
Public Types inherited from inviwo::InteractionEvent
using	ToolTipCallback = std::function< void(const std::string &)>

Protected Member Functions inherited from inviwo::Event
	Event (const Event &rhs)=default

Event &	operator= (const Event &that)=default

Protected Attributes inherited from inviwo::InteractionEvent
KeyModifiers	modifiers_

ToolTipCallback	tooltip_

Detailed Description

Touch event contains all touch points associated with the event. Touch events are usually generated by touch screens or touch pads, see TouchDevice.

See also: TouchPoint

Member Function Documentation

◆ averageDepth()

double inviwo::TouchEvent::averageDepth ( ) const

Average depth of touch points, TouchPoint::depth() Defined in [-1 1], where -1 is the near plane and 1 is the far plane.

Returns: sum(touch points.depth()) / nPoints, or 1 if no touch points exist.

◆ centerNDC()

dvec3 inviwo::TouchEvent::centerNDC ( ) const

Average of touch points in normalized device coordinates, TouchPoint::ndc() Defined in (-1,1) in a left handed coordinate system.

Returns: sum(touch points.ndc()) / nPoints, or dvec3(0) if no touch points exist.

◆ centerPoint()

dvec2 inviwo::TouchEvent::centerPoint ( ) const

Computes average position. Returns dvec2(0) if no touch points exist.

Returns: dvec2 sum(touch points) / nPoints

◆ centerPointNormalized()

dvec2 inviwo::TouchEvent::centerPointNormalized ( ) const

Computes average normalized position. Returns dvec2(0) if no touch points exist.

Returns: dvec2 sum(touch points) / nPoints

◆ findClosestTwoTouchPoints()

std::vector< const TouchPoint * > inviwo::TouchEvent::findClosestTwoTouchPoints ( ) const

Retrieve pointers to the two closest touch points.

Returns: std::vector<const TouchPoint*>, pointers to the two closest touch points vector can have less then two elements, which indicate that not enough points exist

◆ getPickingState()

PickingState inviwo::TouchEvent::getPickingState ( const std::vector< TouchPoint > & points )

static

Get PickingState by analyzing all touch points.

Returns: PickingState::Started or PickingState::Finished when all touch points started or finished. Return PickingState::Updated when any of the touch points updated or some started and some finished.

◆ prevCenterPointNormalized()

dvec2 inviwo::TouchEvent::prevCenterPointNormalized ( ) const

Computes previous average normalized position. Returns dvec2(0) if no touch points exist.

Returns: dvec2 sum(touch points) / nPoints

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

touchevent.h
touchevent.cpp

Public Member Functions

Static Public Member Functions

Additional Inherited Members