inviwo::TouchEvent Class Reference

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, KeyModifiers modifiers)
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.
dvec2	centerPointNormalized () const
	Computes average normalized position. Returns dvec2(0) if no touch points exist.
dvec2	prevCenterPointNormalized () const
	Computes previous average normalized position. Returns dvec2(0) if no touch points exist.
dvec3	centerNDC () const
	Average of touch points in normalized device coordinates, TouchPoint::ndc() Defined in (-1,1) in a left handed coordinate system.
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.
const TouchDevice *	getDevice () const
	Return TouchDevice that generated the event.
std::vector< const TouchPoint * >	findClosestTwoTouchPoints () const
	Retrieve pointers to the two closest touch points.
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 (std::string_view tooltip) const
void	setToolTipCallback (ToolTipCallback callback)
const ToolTipCallback &	getToolTipCallback () const
void	showContextMenu (std::span< ContextMenuEntry > entries, ContextMenuCategories categories=ContextMenuCategory::Callback)
void	setContextMenuCallback (ContextMenuCallback callback)
const ContextMenuCallback &	getContexMenuCallback () const
Public Member Functions inherited from inviwo::Event
virtual bool	shouldPropagateTo (Inport *inport, Processor *processor, Outport *source)
bool	markAsUsed ()
bool	markAsUnused ()
bool	setUsed (bool isUsed)
bool	hasBeenUsed () const
bool	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.
static constexpr uint64_t	chash ()

Additional Inherited Members
Public Types inherited from inviwo::InteractionEvent
using	ToolTipCallback = std::function<void(std::string_view)>
using	ContextMenuCallback
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_
ContextMenuCallback	contextMenuCallback_

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

clone()

virtual TouchEvent * inviwo::TouchEvent::clone ( ) const

overridevirtual

Implements inviwo::InteractionEvent.

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.

hash()

virtual uint64_t inviwo::TouchEvent::hash ( ) const

overridevirtual

Implements inviwo::Event.

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

print()

virtual void inviwo::TouchEvent::print ( std::ostream & ss ) const

overridevirtual

Reimplemented from inviwo::Event.

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

• touchevent.h