an abstract superclass for classes observing events invoked by vtkRenderWindowInteractor More...

#include <vtkInteractorObserver.h>

Inheritance diagram for vtkInteractorObserver:

Collaboration diagram for vtkInteractorObserver:

Public Types
typedef vtkObject	Superclass

Public Member Functions
virtual vtkTypeBool	IsA (const char *type)
	Return 1 if this class is the same type of (or a subclass of) the named class.

vtkInteractorObserver *	NewInstance () const

void	PrintSelf (ostream &os, vtkIndent indent) override
	Methods invoked by print to print information about the object including superclasses.

virtual void	SetEnabled (int)
	Methods for turning the interactor observer on and off, and determining its state.

int	GetEnabled ()

void	EnabledOn ()

void	EnabledOff ()

void	On ()

void	Off ()

virtual void	OnChar ()
	Sets up the keypress-i event.


virtual void	SetInteractor (vtkRenderWindowInteractor *iren)
	This method is used to associate the widget with the render window interactor.

virtual vtkRenderWindowInteractor *	GetInteractor ()
	This method is used to associate the widget with the render window interactor.


virtual void	SetPriority (float)
	Set/Get the priority at which events are processed.

virtual float	GetPriority ()
	Set/Get the priority at which events are processed.


virtual void	PickingManagedOn ()
	Enable/Disable the use of a manager to process the picking.

virtual void	PickingManagedOff ()
	Enable/Disable the use of a manager to process the picking.

virtual void	SetPickingManaged (bool managed)
	Enable/Disable the use of a manager to process the picking.

virtual bool	GetPickingManaged ()
	Enable/Disable the use of a manager to process the picking.


virtual void	SetKeyPressActivation (vtkTypeBool)
	Enable/Disable of the use of a keypress to turn on and off the interactor observer.

virtual vtkTypeBool	GetKeyPressActivation ()
	Enable/Disable of the use of a keypress to turn on and off the interactor observer.

virtual void	KeyPressActivationOn ()
	Enable/Disable of the use of a keypress to turn on and off the interactor observer.

virtual void	KeyPressActivationOff ()
	Enable/Disable of the use of a keypress to turn on and off the interactor observer.


virtual void	SetKeyPressActivationValue (char)
	Specify which key press value to use to activate the interactor observer (if key press activation is enabled).

virtual char	GetKeyPressActivationValue ()
	Specify which key press value to use to activate the interactor observer (if key press activation is enabled).


virtual vtkRenderer *	GetDefaultRenderer ()
	Set/Get the default renderer to use when activating the interactor observer.

virtual void	SetDefaultRenderer (vtkRenderer *)
	Set/Get the default renderer to use when activating the interactor observer.


virtual vtkRenderer *	GetCurrentRenderer ()
	Set/Get the current renderer.

virtual void	SetCurrentRenderer (vtkRenderer *)
	Set/Get the current renderer.


void	GrabFocus (vtkCommand mouseEvents, vtkCommand keypressEvents=nullptr)
	These methods enable an interactor observer to exclusively grab all events invoked by its associated vtkRenderWindowInteractor.

void	ReleaseFocus ()
	These methods enable an interactor observer to exclusively grab all events invoked by its associated vtkRenderWindowInteractor.

Public Member Functions inherited from vtkObject
	vtkBaseTypeMacro (vtkObject, vtkObjectBase)

virtual void	DebugOn ()
	Turn debugging output on.

virtual void	DebugOff ()
	Turn debugging output off.

bool	GetDebug ()
	Get the value of the debug flag.

void	SetDebug (bool debugFlag)
	Set the value of the debug flag.

virtual void	Modified ()
	Update the modification time for this object.

virtual vtkMTimeType	GetMTime ()
	Return this object's modified time.

void	PrintSelf (ostream &os, vtkIndent indent) override
	Methods invoked by print to print information about the object including superclasses.

void	RemoveObserver (unsigned long tag)

void	RemoveObservers (unsigned long event)

void	RemoveObservers (const char *event)

void	RemoveAllObservers ()

vtkTypeBool	HasObserver (unsigned long event)

vtkTypeBool	HasObserver (const char *event)

int	InvokeEvent (unsigned long event)

int	InvokeEvent (const char *event)

unsigned long	AddObserver (unsigned long event, vtkCommand *, float priority=0.0f)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

unsigned long	AddObserver (const char event, vtkCommand , float priority=0.0f)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

vtkCommand *	GetCommand (unsigned long tag)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

void	RemoveObserver (vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

void	RemoveObservers (unsigned long event, vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

void	RemoveObservers (const char event, vtkCommand )
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

vtkTypeBool	HasObserver (unsigned long event, vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

vtkTypeBool	HasObserver (const char event, vtkCommand )
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, void(T::*callback)(), float priority=0.0f)
	Overloads to AddObserver that allow developers to add class member functions as callbacks for events.

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, void(T::callback)(vtkObject , unsigned long, void *), float priority=0.0f)
	Overloads to AddObserver that allow developers to add class member functions as callbacks for events.

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, bool(T::callback)(vtkObject , unsigned long, void *), float priority=0.0f)
	Allow user to set the AbortFlagOn() with the return value of the callback method.

int	InvokeEvent (unsigned long event, void *callData)
	This method invokes an event and return whether the event was aborted or not.

int	InvokeEvent (const char event, void callData)
	This method invokes an event and return whether the event was aborted or not.

Public Member Functions inherited from vtkObjectBase
const char *	GetClassName () const
	Return the class name as a string.

virtual vtkTypeBool	IsA (const char *name)
	Return 1 if this class is the same type of (or a subclass of) the named class.

virtual vtkIdType	GetNumberOfGenerationsFromBase (const char *name)
	Given the name of a base class of this class type, return the distance of inheritance between this class type and the named class (how many generations of inheritance are there between this class and the named class).

virtual void	Delete ()
	Delete a VTK object.

virtual void	FastDelete ()
	Delete a reference to this object.

void	InitializeObjectBase ()

void	Print (ostream &os)
	Print an object to an ostream.

virtual void	Register (vtkObjectBase *o)
	Increase the reference count (mark as used by another object).

virtual void	UnRegister (vtkObjectBase *o)
	Decrease the reference count (release by another object).

int	GetReferenceCount ()
	Return the current reference count of this object.

void	SetReferenceCount (int)
	Sets the reference count.

bool	GetIsInMemkind () const
	A local state flag that remembers whether this object lives in the normal or extended memory space.

virtual void	PrintHeader (ostream &os, vtkIndent indent)
	Methods invoked by print to print information about the object including superclasses.

virtual void	PrintTrailer (ostream &os, vtkIndent indent)
	Methods invoked by print to print information about the object including superclasses.

Static Public Member Functions
static vtkTypeBool	IsTypeOf (const char *type)

static vtkInteractorObserver *	SafeDownCast (vtkObjectBase *o)


static void	ComputeDisplayToWorld (vtkRenderer *ren, double x, double y, double z, double worldPt[4])
	Convenience methods for outside classes.

static void	ComputeWorldToDisplay (vtkRenderer *ren, double x, double y, double z, double displayPt[3])
	Convenience methods for outside classes.

Static Public Member Functions inherited from vtkObject
static vtkObject *	New ()
	Create an object with Debug turned off, modified time initialized to zero, and reference counting on.

static void	BreakOnError ()
	This method is called when vtkErrorMacro executes.

static void	SetGlobalWarningDisplay (int val)
	This is a global flag that controls whether any debug, warning or error messages are displayed.

static void	GlobalWarningDisplayOn ()
	This is a global flag that controls whether any debug, warning or error messages are displayed.

static void	GlobalWarningDisplayOff ()
	This is a global flag that controls whether any debug, warning or error messages are displayed.

static int	GetGlobalWarningDisplay ()
	This is a global flag that controls whether any debug, warning or error messages are displayed.

Static Public Member Functions inherited from vtkObjectBase
static vtkTypeBool	IsTypeOf (const char *name)
	Return 1 if this class type is the same type of (or a subclass of) the named class.

static vtkIdType	GetNumberOfGenerationsFromBaseType (const char *name)
	Given a the name of a base class of this class type, return the distance of inheritance between this class type and the named class (how many generations of inheritance are there between this class and the named class).

static vtkObjectBase *	New ()
	Create an object with Debug turned off, modified time initialized to zero, and reference counting on.

static void	SetMemkindDirectory (const char *directoryname)
	The name of a directory, ideally mounted -o dax, to memory map an extended memory space within.

static bool	GetUsingMemkind ()
	A global state flag that controls whether vtkObjects are constructed in the usual way (the default) or within the extended memory space.

Protected Member Functions
virtual vtkObjectBase *	NewInstanceInternal () const

	vtkInteractorObserver ()

	~vtkInteractorObserver () override

virtual void	RegisterPickers ()
	Register internal Pickers in the Picking Manager.

void	UnRegisterPickers ()
	Unregister internal pickers from the Picking Manager.

vtkPickingManager *	GetPickingManager ()
	Return the picking manager associated on the context on which the observer currently belong.

vtkAssemblyPath *	GetAssemblyPath (double X, double Y, double Z, vtkAbstractPropPicker *picker)
	Proceed to a pick, whether through the PickingManager if the picking is managed or directly using the picker, and return the assembly path.

int	RequestCursorShape (int requestedShape)


virtual void	StartInteraction ()
	Utility routines used to start and end interaction.

virtual void	EndInteraction ()
	Utility routines used to start and end interaction.


void	ComputeDisplayToWorld (double x, double y, double z, double worldPt[4])
	Helper method for subclasses.

void	ComputeWorldToDisplay (double x, double y, double z, double displayPt[3])
	Helper method for subclasses.

Protected Member Functions inherited from vtkObject
	vtkObject ()

	~vtkObject () override

void	RegisterInternal (vtkObjectBase *, vtkTypeBool check) override

void	UnRegisterInternal (vtkObjectBase *, vtkTypeBool check) override

void	InternalGrabFocus (vtkCommand mouseEvents, vtkCommand keypressEvents=nullptr)
	These methods allow a command to exclusively grab all events.

void	InternalReleaseFocus ()
	These methods allow a command to exclusively grab all events.

Protected Member Functions inherited from vtkObjectBase
	vtkObjectBase ()

virtual	~vtkObjectBase ()

virtual void	RegisterInternal (vtkObjectBase *, vtkTypeBool check)

virtual void	UnRegisterInternal (vtkObjectBase *, vtkTypeBool check)

virtual void	ReportReferences (vtkGarbageCollector *)

	vtkObjectBase (const vtkObjectBase &)

void	operator= (const vtkObjectBase &)

Static Protected Member Functions
static void	ProcessEvents (vtkObject object, unsigned long event, void clientdata, void *calldata)
	Handles the char widget activation event.

Static Protected Member Functions inherited from vtkObjectBase
static vtkMallocingFunction	GetCurrentMallocFunction ()

static vtkReallocingFunction	GetCurrentReallocFunction ()

static vtkFreeingFunction	GetCurrentFreeFunction ()

static vtkFreeingFunction	GetAlternateFreeFunction ()

Protected Attributes
int	Enabled

vtkCallbackCommand *	EventCallbackCommand

vtkCallbackCommand *	KeyPressCallbackCommand

float	Priority

bool	PickingManaged

vtkTypeBool	KeyPressActivation

char	KeyPressActivationValue

vtkRenderWindowInteractor *	Interactor

vtkRenderer *	CurrentRenderer

vtkRenderer *	DefaultRenderer

unsigned long	CharObserverTag

unsigned long	DeleteObserverTag

vtkObserverMediator *	ObserverMediator

Protected Attributes inherited from vtkObject
bool	Debug

vtkTimeStamp	MTime

vtkSubjectHelper *	SubjectHelper

Protected Attributes inherited from vtkObjectBase
std::atomic< int32_t >	ReferenceCount

vtkWeakPointerBase **	WeakPointers

Detailed Description

an abstract superclass for classes observing events invoked by vtkRenderWindowInteractor

vtkInteractorObserver is an abstract superclass for subclasses that observe events invoked by vtkRenderWindowInteractor. These subclasses are typically things like 3D widgets; objects that interact with actors in the scene, or interactively probe the scene for information.

vtkInteractorObserver defines the method SetInteractor() and enables and disables the processing of events by the vtkInteractorObserver. Use the methods EnabledOn() or SetEnabled(1) to turn on the interactor observer, and the methods EnabledOff() or SetEnabled(0) to turn off the interactor. Initial value is 0.

To support interactive manipulation of objects, this class (and subclasses) invoke the events StartInteractionEvent, InteractionEvent, and EndInteractionEvent. These events are invoked when the vtkInteractorObserver enters a state where rapid response is desired: mouse motion, etc. The events can be used, for example, to set the desired update frame rate (StartInteractionEvent), operate on data or update a pipeline (InteractionEvent), and set the desired frame rate back to normal values (EndInteractionEvent). Two other events, EnableEvent and DisableEvent, are invoked when the interactor observer is enabled or disabled.

See also: vtk3DWidget vtkBoxWidget vtkLineWidget

Events:: vtkCommand::CursorChangedEvent

Examples:: vtkInteractorObserver (Examples)

Online Examples:

TransparentBackground

Definition at line 84 of file vtkInteractorObserver.h.

Member Typedef Documentation

◆ Superclass

typedef vtkObject vtkInteractorObserver::Superclass

Definition at line 87 of file vtkInteractorObserver.h.

Constructor & Destructor Documentation

◆ vtkInteractorObserver()

vtkInteractorObserver::vtkInteractorObserver ( )

protected

◆ ~vtkInteractorObserver()

vtkInteractorObserver::~vtkInteractorObserver ( )

overrideprotected

Member Function Documentation

◆ IsTypeOf()

static vtkTypeBool vtkInteractorObserver::IsTypeOf ( const char * type )

static

◆ IsA()

virtual vtkTypeBool vtkInteractorObserver::IsA ( const char * name )

virtual

Return 1 if this class is the same type of (or a subclass of) the named class.

Returns 0 otherwise. This method works in combination with vtkTypeMacro found in vtkSetGet.h.

Reimplemented from vtkObjectBase.

◆ SafeDownCast()

static vtkInteractorObserver * vtkInteractorObserver::SafeDownCast ( vtkObjectBase * o )

static

◆ NewInstanceInternal()

virtual vtkObjectBase * vtkInteractorObserver::NewInstanceInternal ( ) const

protectedvirtual

◆ NewInstance()

vtkInteractorObserver * vtkInteractorObserver::NewInstance ( ) const

◆ PrintSelf()

void vtkInteractorObserver::PrintSelf	(	ostream &	os,
		vtkIndent	indent
	)

overridevirtual

Methods invoked by print to print information about the object including superclasses.

Typically not called by the user (use Print() instead) but used in the hierarchical print process to combine the output of several classes.

Reimplemented from vtkObject.

Reimplemented in vtkInteractorStyle, vtkInteractorStyle3D, vtkInteractorStyleSwitchBase, vtkOpenVRInteractorStyle, vtkVRMenuWidget, vtkVRPanelWidget, vtkContextInteractorStyle, vtkInteractorStyleAreaSelectHover, and vtkInteractorStyleTreeMapHover.

◆ SetEnabled()

virtual void vtkInteractorObserver::SetEnabled ( int )

inlinevirtual

Methods for turning the interactor observer on and off, and determining its state.

All subclasses must provide the SetEnabled() method. Enabling a vtkInteractorObserver has the side effect of adding observers; disabling it removes the observers. Prior to enabling the vtkInteractorObserver you must set the render window interactor (via SetInteractor()). Initial value is 0.

Reimplemented in vtkQWidgetWidget, vtkAxesTransformWidget, vtkBoxWidget2, vtkCameraPathWidget, vtkCaptionWidget, vtkHandleWidget, vtkImageCroppingRegionsWidget, vtkImplicitPlaneWidget2, vtkLineWidget2, vtkMagnifierWidget, vtkPointCloudWidget, vtkPolyLineWidget, vtkSphereWidget2, vtkSplineWidget2, vtkTensorWidget, vtkAbstractWidget, vtkAffineWidget, vtkAngleWidget, vtkBalloonWidget, vtkBiDimensionalWidget, vtkBoxWidget, vtkBrokenLineWidget, vtkButtonWidget, vtkCheckerboardWidget, vtkContourWidget, vtkDistanceWidget, vtkHoverWidget, vtkImagePlaneWidget, vtkImageTracerWidget, vtkImplicitPlaneWidget, vtkLineWidget, vtkOrientationMarkerWidget, vtkParallelopipedWidget, vtkPlaneWidget, vtkPointWidget, vtkResliceCursorWidget, vtkSeedWidget, vtkSphereWidget, vtkSplineWidget, vtkXYPlotWidget, vtkInteractorEventRecorder, and vtkInteractorStyle.

Definition at line 98 of file vtkInteractorObserver.h.

◆ GetEnabled()

int vtkInteractorObserver::GetEnabled ( )

inline

Definition at line 99 of file vtkInteractorObserver.h.

◆ EnabledOn()

void vtkInteractorObserver::EnabledOn ( )

inline

Definition at line 100 of file vtkInteractorObserver.h.

◆ EnabledOff()

void vtkInteractorObserver::EnabledOff ( )

inline

Definition at line 101 of file vtkInteractorObserver.h.

◆ On()

void vtkInteractorObserver::On ( )

inline

Definition at line 102 of file vtkInteractorObserver.h.

◆ Off()

void vtkInteractorObserver::Off ( )

inline

Definition at line 103 of file vtkInteractorObserver.h.

◆ SetInteractor()

virtual void vtkInteractorObserver::SetInteractor ( vtkRenderWindowInteractor * iren )

virtual

This method is used to associate the widget with the render window interactor.

Observers of the appropriate events invoked in the render window interactor are set up as a result of this method invocation. The SetInteractor() method must be invoked prior to enabling the vtkInteractorObserver. It automatically registers available pickers to the Picking Manager.

Reimplemented in vtkSeedWidget, vtkInteractorStyle, vtkInteractorStyleSwitch, vtkInteractorEventRecorder, vtkOpenVRInteractorStyle, vtkInteractorStyleAreaSelectHover, and vtkInteractorStyleTreeMapHover.

◆ GetInteractor()

virtual vtkRenderWindowInteractor * vtkInteractorObserver::GetInteractor ( )

virtual

This method is used to associate the widget with the render window interactor.

Observers of the appropriate events invoked in the render window interactor are set up as a result of this method invocation. The SetInteractor() method must be invoked prior to enabling the vtkInteractorObserver. It automatically registers available pickers to the Picking Manager.

Reimplemented in vtkInteractorStyleSwitchBase.

◆ SetPriority()

virtual void vtkInteractorObserver::SetPriority ( float )

virtual

Set/Get the priority at which events are processed.

This is used when multiple interactor observers are used simultaneously. The default value is 0.0 (lowest priority.) Note that when multiple interactor observer have the same priority, then the last observer added will process the event first. (Note: once the SetInteractor() method has been called, changing the priority does not effect event processing. You will have to SetInteractor(NULL), change priority, and then SetInteractor(iren) to have the priority take effect.)

Reimplemented in vtkAbstractWidget.

◆ GetPriority()

virtual float vtkInteractorObserver::GetPriority ( )

virtual

Set/Get the priority at which events are processed.

This is used when multiple interactor observers are used simultaneously. The default value is 0.0 (lowest priority.) Note that when multiple interactor observer have the same priority, then the last observer added will process the event first. (Note: once the SetInteractor() method has been called, changing the priority does not effect event processing. You will have to SetInteractor(NULL), change priority, and then SetInteractor(iren) to have the priority take effect.)

◆ PickingManagedOn()

virtual void vtkInteractorObserver::PickingManagedOn ( )

virtual

Enable/Disable the use of a manager to process the picking.

Enabled by default.

◆ PickingManagedOff()

virtual void vtkInteractorObserver::PickingManagedOff ( )

virtual

Enable/Disable the use of a manager to process the picking.

Enabled by default.

◆ SetPickingManaged()

virtual void vtkInteractorObserver::SetPickingManaged ( bool managed )

virtual

Enable/Disable the use of a manager to process the picking.

Enabled by default.

◆ GetPickingManaged()

virtual bool vtkInteractorObserver::GetPickingManaged ( )

virtual

Enable/Disable the use of a manager to process the picking.

Enabled by default.

◆ SetKeyPressActivation()

virtual void vtkInteractorObserver::SetKeyPressActivation ( vtkTypeBool )

virtual

Enable/Disable of the use of a keypress to turn on and off the interactor observer.

(By default, the keypress is 'i' for "interactor observer".) Set the KeyPressActivationValue to change which key activates the widget.)

◆ GetKeyPressActivation()

virtual vtkTypeBool vtkInteractorObserver::GetKeyPressActivation ( )

virtual

Enable/Disable of the use of a keypress to turn on and off the interactor observer.

(By default, the keypress is 'i' for "interactor observer".) Set the KeyPressActivationValue to change which key activates the widget.)

◆ KeyPressActivationOn()

virtual void vtkInteractorObserver::KeyPressActivationOn ( )

virtual

Enable/Disable of the use of a keypress to turn on and off the interactor observer.

(By default, the keypress is 'i' for "interactor observer".) Set the KeyPressActivationValue to change which key activates the widget.)

◆ KeyPressActivationOff()

virtual void vtkInteractorObserver::KeyPressActivationOff ( )

virtual

Enable/Disable of the use of a keypress to turn on and off the interactor observer.

(By default, the keypress is 'i' for "interactor observer".) Set the KeyPressActivationValue to change which key activates the widget.)

◆ SetKeyPressActivationValue()

virtual void vtkInteractorObserver::SetKeyPressActivationValue ( char )

virtual

Specify which key press value to use to activate the interactor observer (if key press activation is enabled).

By default, the key press activation value is 'i'. Note: once the SetInteractor() method is invoked, changing the key press activation value will not affect the key press until SetInteractor(NULL)/SetInteractor(iren) is called.

◆ GetKeyPressActivationValue()

virtual char vtkInteractorObserver::GetKeyPressActivationValue ( )

virtual

Specify which key press value to use to activate the interactor observer (if key press activation is enabled).

By default, the key press activation value is 'i'. Note: once the SetInteractor() method is invoked, changing the key press activation value will not affect the key press until SetInteractor(NULL)/SetInteractor(iren) is called.

◆ GetDefaultRenderer()

virtual vtkRenderer * vtkInteractorObserver::GetDefaultRenderer ( )

virtual

Set/Get the default renderer to use when activating the interactor observer.

Normally when the widget is activated (SetEnabled(1) or when keypress activation takes place), the renderer over which the mouse pointer is positioned is used. Alternatively, you can specify the renderer to bind the interactor to when the interactor observer is activated.

◆ SetDefaultRenderer()

virtual void vtkInteractorObserver::SetDefaultRenderer ( vtkRenderer * )

virtual

Set/Get the default renderer to use when activating the interactor observer.

Normally when the widget is activated (SetEnabled(1) or when keypress activation takes place), the renderer over which the mouse pointer is positioned is used. Alternatively, you can specify the renderer to bind the interactor to when the interactor observer is activated.

Reimplemented in vtkInteractorStyleSwitch.

◆ GetCurrentRenderer()

virtual vtkRenderer * vtkInteractorObserver::GetCurrentRenderer ( )

virtual

Set/Get the current renderer.

Normally when the widget is activated (SetEnabled(1) or when keypress activation takes place), the renderer over which the mouse pointer is positioned is used and assigned to this Ivar. Alternatively, you might want to set the CurrentRenderer explicitly. This is especially true with multiple viewports (renderers). WARNING: note that if the DefaultRenderer Ivar is set (see above), it will always override the parameter passed to SetCurrentRenderer, unless it is NULL. (i.e., SetCurrentRenderer(foo) = SetCurrentRenderer(DefaultRenderer).

◆ SetCurrentRenderer()

virtual void vtkInteractorObserver::SetCurrentRenderer ( vtkRenderer * )

virtual

Set/Get the current renderer.

Normally when the widget is activated (SetEnabled(1) or when keypress activation takes place), the renderer over which the mouse pointer is positioned is used and assigned to this Ivar. Alternatively, you might want to set the CurrentRenderer explicitly. This is especially true with multiple viewports (renderers). WARNING: note that if the DefaultRenderer Ivar is set (see above), it will always override the parameter passed to SetCurrentRenderer, unless it is NULL. (i.e., SetCurrentRenderer(foo) = SetCurrentRenderer(DefaultRenderer).

Reimplemented in vtkInteractorStyleSwitch, and vtkSeedWidget.

◆ OnChar()

virtual void vtkInteractorObserver::OnChar ( )

virtual

Sets up the keypress-i event.

Reimplemented in vtkInteractorStyleFlight, vtkInteractorStyleImage, vtkInteractorStyleRubberBandPick, vtkInteractorStyleSwitch, vtkInteractorStyleTerrain, vtkInteractorStyleUser, vtkParallelCoordinatesInteractorStyle, vtkImagePlaneWidget, vtkInteractorStyle, and vtkContextInteractorStyle.

◆ ComputeDisplayToWorld() [1/2]

static void vtkInteractorObserver::ComputeDisplayToWorld	(	vtkRenderer *	ren,
		double	x,
		double	y,
		double	z,
		double	worldPt[4]
	)

static

Convenience methods for outside classes.

Make sure that the parameter "ren" is not-null.

◆ ComputeWorldToDisplay() [1/2]

static void vtkInteractorObserver::ComputeWorldToDisplay	(	vtkRenderer *	ren,
		double	x,
		double	y,
		double	z,
		double	displayPt[3]
	)

static

Convenience methods for outside classes.

Make sure that the parameter "ren" is not-null.

◆ GrabFocus()

void vtkInteractorObserver::GrabFocus	(	vtkCommand *	mouseEvents,
		vtkCommand *	keypressEvents = `nullptr`
	)

These methods enable an interactor observer to exclusively grab all events invoked by its associated vtkRenderWindowInteractor.

(This method is typically used by widgets to grab events once an event sequence begins.) The GrabFocus() signature takes up to two vtkCommands corresponding to mouse events and keypress events. (These two commands are separated so that the widget can listen for its activation keypress, as well as listening for DeleteEvents, without actually having to process mouse events.)

◆ ReleaseFocus()

void vtkInteractorObserver::ReleaseFocus ( )

These methods enable an interactor observer to exclusively grab all events invoked by its associated vtkRenderWindowInteractor.

(This method is typically used by widgets to grab events once an event sequence begins.) The GrabFocus() signature takes up to two vtkCommands corresponding to mouse events and keypress events. (These two commands are separated so that the widget can listen for its activation keypress, as well as listening for DeleteEvents, without actually having to process mouse events.)

◆ StartInteraction()

virtual void vtkInteractorObserver::StartInteraction ( )

protectedvirtual

Utility routines used to start and end interaction.

For example, it switches the display update rate. It does not invoke the corresponding events.

◆ EndInteraction()

virtual void vtkInteractorObserver::EndInteraction ( )

protectedvirtual

Utility routines used to start and end interaction.

For example, it switches the display update rate. It does not invoke the corresponding events.

Reimplemented in vtkOrientationMarkerWidget.

◆ ProcessEvents()

static void vtkInteractorObserver::ProcessEvents	(	vtkObject *	object,
		unsigned long	event,
		void *	clientdata,
		void *	calldata
	)

staticprotected

Handles the char widget activation event.

Also handles the delete event.

◆ ComputeDisplayToWorld() [2/2]

void vtkInteractorObserver::ComputeDisplayToWorld	(	double	x,
		double	y,
		double	z,
		double	worldPt[4]
	)

protected

Helper method for subclasses.

◆ ComputeWorldToDisplay() [2/2]

void vtkInteractorObserver::ComputeWorldToDisplay	(	double	x,
		double	y,
		double	z,
		double	displayPt[3]
	)

protected

Helper method for subclasses.

◆ RegisterPickers()

virtual void vtkInteractorObserver::RegisterPickers ( )

protectedvirtual

Register internal Pickers in the Picking Manager.

Must be reimplemented by concrete widgets to register their pickers.

Reimplemented in vtkBalloonWidget, vtkBoxWidget, vtkBrokenLineWidget, vtkImagePlaneWidget, vtkImageTracerWidget, vtkImplicitPlaneWidget, vtkLineWidget, vtkPlaneWidget, vtkPointWidget, vtkSphereWidget, and vtkSplineWidget.

◆ UnRegisterPickers()

void vtkInteractorObserver::UnRegisterPickers ( )

protected

Unregister internal pickers from the Picking Manager.

◆ GetPickingManager()

vtkPickingManager * vtkInteractorObserver::GetPickingManager ( )

protected

Return the picking manager associated on the context on which the observer currently belong.

◆ GetAssemblyPath()

vtkAssemblyPath * vtkInteractorObserver::GetAssemblyPath	(	double	X,
		double	Y,
		double	Z,
		vtkAbstractPropPicker *	picker
	)

protected

Proceed to a pick, whether through the PickingManager if the picking is managed or directly using the picker, and return the assembly path.

◆ RequestCursorShape()

int vtkInteractorObserver::RequestCursorShape ( int requestedShape )

protected

Member Data Documentation

◆ Enabled

int vtkInteractorObserver::Enabled

protected

Definition at line 256 of file vtkInteractorObserver.h.

◆ EventCallbackCommand

vtkCallbackCommand* vtkInteractorObserver::EventCallbackCommand

protected

Definition at line 259 of file vtkInteractorObserver.h.

◆ KeyPressCallbackCommand

vtkCallbackCommand* vtkInteractorObserver::KeyPressCallbackCommand

protected

Definition at line 260 of file vtkInteractorObserver.h.

◆ Priority

float vtkInteractorObserver::Priority

protected

Definition at line 263 of file vtkInteractorObserver.h.

◆ PickingManaged

bool vtkInteractorObserver::PickingManaged

protected

Definition at line 267 of file vtkInteractorObserver.h.

◆ KeyPressActivation

vtkTypeBool vtkInteractorObserver::KeyPressActivation

protected

Definition at line 294 of file vtkInteractorObserver.h.

◆ KeyPressActivationValue

char vtkInteractorObserver::KeyPressActivationValue

protected

Definition at line 295 of file vtkInteractorObserver.h.

◆ Interactor

vtkRenderWindowInteractor* vtkInteractorObserver::Interactor

protected

Definition at line 298 of file vtkInteractorObserver.h.

◆ CurrentRenderer

vtkRenderer* vtkInteractorObserver::CurrentRenderer

protected

Definition at line 301 of file vtkInteractorObserver.h.

◆ DefaultRenderer

vtkRenderer* vtkInteractorObserver::DefaultRenderer

protected

Definition at line 302 of file vtkInteractorObserver.h.

◆ CharObserverTag

unsigned long vtkInteractorObserver::CharObserverTag

protected

Definition at line 304 of file vtkInteractorObserver.h.

◆ DeleteObserverTag

unsigned long vtkInteractorObserver::DeleteObserverTag

protected

Definition at line 305 of file vtkInteractorObserver.h.

◆ ObserverMediator

vtkObserverMediator* vtkInteractorObserver::ObserverMediator

protected

Definition at line 308 of file vtkInteractorObserver.h.

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

Rendering/Core/vtkInteractorObserver.h

Public Types

Public Member Functions

Static Public Member Functions

Protected Member Functions

Static Protected Member Functions

Protected Attributes

Detailed Description

Member Typedef Documentation

◆ Superclass

Constructor & Destructor Documentation

◆ vtkInteractorObserver()

◆ ~vtkInteractorObserver()

Member Function Documentation

◆ IsTypeOf()

◆ IsA()

◆ SafeDownCast()

◆ NewInstanceInternal()

◆ NewInstance()

◆ PrintSelf()

◆ SetEnabled()

◆ GetEnabled()

◆ EnabledOn()

◆ EnabledOff()

◆ On()

◆ Off()

◆ SetInteractor()

◆ GetInteractor()

◆ SetPriority()

◆ GetPriority()

◆ PickingManagedOn()

◆ PickingManagedOff()

◆ SetPickingManaged()

◆ GetPickingManaged()

◆ SetKeyPressActivation()

◆ GetKeyPressActivation()

◆ KeyPressActivationOn()

◆ KeyPressActivationOff()

◆ SetKeyPressActivationValue()

◆ GetKeyPressActivationValue()

◆ GetDefaultRenderer()

◆ SetDefaultRenderer()

◆ GetCurrentRenderer()

◆ SetCurrentRenderer()

◆ OnChar()

◆ ComputeDisplayToWorld() [1/2]

◆ ComputeWorldToDisplay() [1/2]

◆ GrabFocus()

◆ ReleaseFocus()

◆ StartInteraction()

◆ EndInteraction()

◆ ProcessEvents()

◆ ComputeDisplayToWorld() [2/2]

◆ ComputeWorldToDisplay() [2/2]

◆ RegisterPickers()

◆ UnRegisterPickers()

◆ GetPickingManager()

◆ GetAssemblyPath()

◆ RequestCursorShape()

Member Data Documentation

◆ Enabled

◆ EventCallbackCommand

◆ KeyPressCallbackCommand

◆ Priority

◆ PickingManaged

◆ KeyPressActivation

◆ KeyPressActivationValue

◆ Interactor

◆ CurrentRenderer

◆ DefaultRenderer

◆ CharObserverTag

◆ DeleteObserverTag

◆ ObserverMediator