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 <inviwo/core/interaction/events/touchevent.h>

Inheritance diagram for inviwo::TouchEvent:

Public Member Functions
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.
uvec2	canvasSize () const
dvec3	centerNDC () const
	Average of touch points in normalized device coordinates, TouchPoint::ndc() Defined in (-1,1) in a left handed coordinate system.
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.
virtual TouchEvent *	clone () const override
std::vector< const TouchPoint * >	findClosestTwoTouchPoints () const
	Retrieve pointers to the two closest touch points.
const TouchDevice *	getDevice () const
	Return TouchDevice that generated the event.
virtual uint64_t	hash () const override
bool	hasTouchPoints () const
dvec2	prevCenterPointNormalized () const
	Computes previous average normalized position. Returns dvec2(0) if no touch points exist.
virtual void	print (fmt::memory_buffer &buff) const override
void	setTouchPoints (std::vector< TouchPoint > val)
	TouchEvent (const std::vector< TouchPoint > &touchPoints, const TouchDevice *source, KeyModifiers modifiers)
std::vector< TouchPoint > &	touchPoints ()
const std::vector< TouchPoint > &	touchPoints () const
Public Member Functions inherited from inviwo::InteractionEvent
const ContextMenuCallback &	getContexMenuCallback () const
const ToolTipCallback &	getToolTipCallback () const
	InteractionEvent (const InteractionEvent &rhs)=default
	InteractionEvent (KeyModifiers modifiers=KeyModifiers(flags::empty))
KeyModifiers	modifiers () const
InteractionEvent &	operator= (const InteractionEvent &that)=default
void	setContextMenuCallback (ContextMenuCallback callback)
void	setModifiers (KeyModifiers modifiers)
void	setToolTip (std::string_view tooltip) const
void	setToolTipCallback (ToolTipCallback callback)
void	showContextMenu (std::span< ContextMenuEntry > entries, ContextMenuCategories categories=ContextMenuCategory::Callback)
Public Member Functions inherited from inviwo::Event
template<typename EventType >
EventType *	getAs ()
template<typename EventType >
const EventType *	getAs () const
const std::vector< Processor * > &	getVisitedProcessors () const
bool	hasBeenUsed () const
bool	hasVisitedProcessor (Processor *) const
bool	markAsUnused ()
bool	markAsUsed ()
void	markAsVisited (const Event &)
bool	markAsVisited (Processor *)
bool	setUsed (bool isUsed)
virtual bool	shouldPropagateTo (Inport *inport, Processor *processor, Outport *source)

Static Public Member Functions
static constexpr uint64_t	chash ()
static PickingState	getPickingState (const std::vector< TouchPoint > &points)
	Get PickingState by analyzing all touch points.

Additional Inherited Members
Public Types inherited from inviwo::InteractionEvent
using	ContextMenuCallback
using	ToolTipCallback = std::function<void(std::string_view)>
Protected Member Functions inherited from inviwo::Event
	Event (const Event &rhs)=default
Event &	operator= (const Event &that)=default
Protected Attributes inherited from inviwo::InteractionEvent
ContextMenuCallback	contextMenuCallback_
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

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()

static 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 ( fmt::memory_buffer & buff ) const

overridevirtual

Implements inviwo::Event.

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

• include/inviwo/core/interaction/events/touchevent.h