3D widget for manipulating a finite, straight line More...

#include <vtkLineWidget2.h>

Inheritance diagram for vtkLineWidget2:

Collaboration diagram for vtkLineWidget2:

Public Member Functions
void	SetEnabled (int enabling) override
	Override superclasses' SetEnabled() method because the line widget must enable its internal handle widgets. More...

void	SetRepresentation (vtkLineRepresentation *r)
	Specify an instance of vtkWidgetRepresentation used to represent this widget in the scene. More...

vtkLineRepresentation *	GetLineRepresentation ()
	Return the representation as a vtkLineRepresentation. More...

void	CreateDefaultRepresentation () override
	Create the default widget representation if one is not set. More...

void	SetProcessEvents (vtkTypeBool) override
	Methods to change the whether the widget responds to interaction. More...

Public Member Functions inherited from vtkAbstractWidget
vtkWidgetEventTranslator *	GetEventTranslator ()
	Get the event translator. More...

void	Render ()
	This method is called by subclasses when a render method is to be invoked on the vtkRenderWindowInteractor. More...

void	SetParent (vtkAbstractWidget *parent)
	Specifying a parent to this widget is used when creating composite widgets. More...

virtual vtkAbstractWidget *	GetParent ()

void	SetPriority (float) override
	Override the superclass method. More...

virtual vtkTypeBool	GetProcessEvents ()
	Methods to change whether the widget responds to interaction. More...

virtual void	ProcessEventsOn ()
	Methods to change whether the widget responds to interaction. More...

virtual void	ProcessEventsOff ()
	Methods to change whether the widget responds to interaction. More...

vtkWidgetRepresentation *	GetRepresentation ()
	Return an instance of vtkWidgetRepresentation used to represent this widget in the scene. More...

virtual void	SetManagesCursor (vtkTypeBool)
	Turn on or off the management of the cursor. More...

virtual vtkTypeBool	GetManagesCursor ()
	Turn on or off the management of the cursor. More...

virtual void	ManagesCursorOn ()
	Turn on or off the management of the cursor. More...

virtual void	ManagesCursorOff ()
	Turn on or off the management of the cursor. More...

vtkAbstractWidget *	NewInstance () const
	Standard macros implementing standard VTK methods. More...

Public Member Functions inherited from vtkInteractorObserver
vtkInteractorObserver *	NewInstance () const

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

int	GetEnabled ()

void	EnabledOn ()

void	EnabledOff ()

void	On ()

void	Off ()

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

virtual void	DebugOn ()
	Turn debugging output on. More...

virtual void	DebugOff ()
	Turn debugging output off. More...

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

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

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

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

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. More...

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

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

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

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

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

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

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

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. More...

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. More...

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. More...

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

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

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

virtual void	Delete ()
	Delete a VTK object. More...

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

void	InitializeObjectBase ()

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

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

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

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

void	SetReferenceCount (int)
	Sets the reference count. More...

void	PrintRevisions (ostream &)
	Legacy. More...

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

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

Static Public Member Functions
static vtkLineWidget2 *	New ()
	Instantiate the object. More...

Static Public Member Functions inherited from vtkAbstractWidget
static vtkTypeBool	IsTypeOf (const char *type)
	Standard macros implementing standard VTK methods. More...

static vtkAbstractWidget *	SafeDownCast (vtkObjectBase *o)
	Standard macros implementing standard VTK methods. More...

Static Public Member Functions inherited from vtkInteractorObserver
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. More...

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

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. More...

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

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

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

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

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

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. More...

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

Protected Types
enum	_WidgetState { Start =0, Active }

Protected Member Functions
	vtkLineWidget2 ()

	~vtkLineWidget2 () override

Protected Member Functions inherited from vtkAbstractWidget
	vtkAbstractWidget ()

	~vtkAbstractWidget () override

void	SetWidgetRepresentation (vtkWidgetRepresentation *r)

virtual void	SetCursor (int vtkNotUsed(state))

Protected Member Functions inherited from vtkInteractorObserver
	vtkInteractorObserver ()

	~vtkInteractorObserver () override

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

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

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

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. More...

int	RequestCursorShape (int requestedShape)

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

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

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

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

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. More...

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

Protected Member Functions inherited from vtkObjectBase
	vtkObjectBase ()

virtual	~vtkObjectBase ()

virtual void	CollectRevisions (ostream &)

virtual void	ReportReferences (vtkGarbageCollector *)

	vtkObjectBase (const vtkObjectBase &)

void	operator= (const vtkObjectBase &)

Static Protected Member Functions
static void	SelectAction (vtkAbstractWidget *)

static void	TranslateAction (vtkAbstractWidget *)

static void	ScaleAction (vtkAbstractWidget *)

static void	EndSelectAction (vtkAbstractWidget *)

static void	MoveAction (vtkAbstractWidget *)

static void	ProcessKeyEvents (vtkObject , unsigned long, void , void *)

Static Protected Member Functions inherited from vtkAbstractWidget
static void	ProcessEventsHandler (vtkObject object, unsigned long event, void clientdata, void *calldata)

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

Protected Attributes
int	WidgetState

int	CurrentHandle

vtkHandleWidget *	Point1Widget

vtkHandleWidget *	Point2Widget

vtkHandleWidget *	LineHandle

char	ActiveKeyCode

vtkCallbackCommand *	KeyEventCallbackCommand

Protected Attributes inherited from vtkAbstractWidget
vtkWidgetRepresentation *	WidgetRep

vtkTypeBool	ManagesCursor

vtkWidgetEventTranslator *	EventTranslator

vtkWidgetCallbackMapper *	CallbackMapper

vtkAbstractWidget *	Parent

void *	CallData

vtkTypeBool	ProcessEvents

Protected Attributes inherited from vtkInteractorObserver
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
vtkAtomicInt32	ReferenceCount

vtkWeakPointerBase **	WeakPointers

typedef vtkAbstractWidget	Superclass
	Standard vtkObject methods. More...

static vtkTypeBool	IsTypeOf (const char *type)
	Standard vtkObject methods. More...

static vtkLineWidget2 *	SafeDownCast (vtkObjectBase *o)
	Standard vtkObject methods. More...

virtual vtkTypeBool	IsA (const char *type)
	Standard vtkObject methods. More...

vtkLineWidget2 *	NewInstance () const
	Standard vtkObject methods. More...

void	PrintSelf (ostream &os, vtkIndent indent) override
	Standard vtkObject methods. More...

virtual vtkObjectBase *	NewInstanceInternal () const
	Standard vtkObject methods. More...

Additional Inherited Members
Public Types inherited from vtkAbstractWidget
typedef vtkInteractorObserver	Superclass
	Standard macros implementing standard VTK methods. More...

Public Types inherited from vtkInteractorObserver
typedef vtkObject	Superclass

Detailed Description

3D widget for manipulating a finite, straight line

This 3D widget defines a straight line that can be interactively placed in a scene. The widget is assumed to consist of two parts: 1) two end points and 2) a straight line connecting the two points. (The representation paired with this widget determines the actual geometry of the widget.) The positioning of the two end points is facilitated by using vtkHandleWidgets to position the points.

To use this widget, you generally pair it with a vtkLineRepresentation (or a subclass). Various options are available in the representation for controlling how the widget appears, and how the widget functions.

Event Bindings:

By default, the widget responds to the following VTK events (i.e., it watches the vtkRenderWindowInteractor for these events):

If one of the two end points are selected:
  LeftButtonPressEvent - activate the associated handle widget
  LeftButtonReleaseEvent - release the handle widget associated with the point
  MouseMoveEvent - move the point
If the line is selected:
  LeftButtonPressEvent - activate a handle widget accociated with the line
  LeftButtonReleaseEvent - release the handle widget associated with the line
  MouseMoveEvent - translate the line
In all the cases, independent of what is picked, the widget responds to the
following VTK events:
  MiddleButtonPressEvent - translate the widget
  MiddleButtonReleaseEvent - release the widget
  RightButtonPressEvent - scale the widget's representation
  RightButtonReleaseEvent - stop scaling the widget
  MouseMoveEvent - scale (if right button) or move (if middle button) the widget

Event Bindings:

Note that the event bindings described above can be changed using this class's vtkWidgetEventTranslator. This class translates VTK events into the vtkLineWidget2's widget events:

  vtkWidgetEvent::Select -- some part of the widget has been selected
  vtkWidgetEvent::EndSelect -- the selection process has completed
  vtkWidgetEvent::Move -- a request for slider motion has been invoked

Event Bindings:

In turn, when these widget events are processed, the vtkLineWidget2 invokes the following VTK events on itself (which observers can listen for):

  vtkCommand::StartInteractionEvent (on vtkWidgetEvent::Select)
  vtkCommand::EndInteractionEvent (on vtkWidgetEvent::EndSelect)
  vtkCommand::InteractionEvent (on vtkWidgetEvent::Move)

Event Bindings:: This class, and vtkLineRepresentation, are next generation VTK widgets. An earlier version of this functionality was defined in the class vtkLineWidget.

See also: vtkLineRepresentation vtkLineWidget vtk3DWidget vtkImplicitPlaneWidget vtkImplicitPlaneWidget2

Tests:: vtkLineWidget2 (Tests)

Definition at line 95 of file vtkLineWidget2.h.

Member Typedef Documentation

typedef vtkAbstractWidget vtkLineWidget2::Superclass

Standard vtkObject methods.

Definition at line 107 of file vtkLineWidget2.h.

Member Enumeration Documentation

enum vtkLineWidget2::_WidgetState

protected

Enumerator
Start
Active

Definition at line 148 of file vtkLineWidget2.h.

Constructor & Destructor Documentation

vtkLineWidget2::vtkLineWidget2 ( )

protected

vtkLineWidget2::~vtkLineWidget2 ( )

overrideprotected

Member Function Documentation

static vtkLineWidget2* vtkLineWidget2::New ( )

static

Instantiate the object.

static vtkTypeBool vtkLineWidget2::IsTypeOf ( const char * type )

static

Standard vtkObject methods.

virtual vtkTypeBool vtkLineWidget2::IsA ( const char * type )

virtual

Standard vtkObject methods.

Reimplemented from vtkAbstractWidget.

static vtkLineWidget2* vtkLineWidget2::SafeDownCast ( vtkObjectBase * o )

static

Standard vtkObject methods.

virtual vtkObjectBase* vtkLineWidget2::NewInstanceInternal ( ) const

protectedvirtual

Standard vtkObject methods.

Reimplemented from vtkAbstractWidget.

vtkLineWidget2* vtkLineWidget2::NewInstance ( ) const

Standard vtkObject methods.

void vtkLineWidget2::PrintSelf	(	ostream &	os,
		vtkIndent	indent
	)

overridevirtual

Standard vtkObject methods.

Reimplemented from vtkAbstractWidget.

void vtkLineWidget2::SetEnabled ( int enabling )

overridevirtual

Override superclasses' SetEnabled() method because the line widget must enable its internal handle widgets.

Reimplemented from vtkAbstractWidget.

void vtkLineWidget2::SetRepresentation ( vtkLineRepresentation * r )

inline

Specify an instance of vtkWidgetRepresentation used to represent this widget in the scene.

Note that the representation is a subclass of vtkProp so it can be added to the renderer independent of the widget.

Definition at line 122 of file vtkLineWidget2.h.

vtkLineRepresentation* vtkLineWidget2::GetLineRepresentation ( )

inline

Return the representation as a vtkLineRepresentation.

Definition at line 128 of file vtkLineWidget2.h.

void vtkLineWidget2::CreateDefaultRepresentation ( )

overridevirtual

Create the default widget representation if one is not set.

Implements vtkAbstractWidget.

void vtkLineWidget2::SetProcessEvents ( vtkTypeBool )

overridevirtual

Methods to change the whether the widget responds to interaction.

Overridden to pass the state to component widgets.

Reimplemented from vtkAbstractWidget.

static void vtkLineWidget2::SelectAction ( vtkAbstractWidget * )

staticprotected

static void vtkLineWidget2::TranslateAction ( vtkAbstractWidget * )

staticprotected

static void vtkLineWidget2::ScaleAction ( vtkAbstractWidget * )

staticprotected

static void vtkLineWidget2::EndSelectAction ( vtkAbstractWidget * )

staticprotected

static void vtkLineWidget2::MoveAction ( vtkAbstractWidget * )

staticprotected

static void vtkLineWidget2::ProcessKeyEvents	(	vtkObject *	,
		unsigned	long,
		void *	,
		void *
	)

staticprotected

Member Data Documentation

int vtkLineWidget2::WidgetState

protected

Definition at line 147 of file vtkLineWidget2.h.

int vtkLineWidget2::CurrentHandle

protected

Definition at line 149 of file vtkLineWidget2.h.

vtkHandleWidget* vtkLineWidget2::Point1Widget

protected

Definition at line 159 of file vtkLineWidget2.h.

vtkHandleWidget* vtkLineWidget2::Point2Widget

protected

Definition at line 160 of file vtkLineWidget2.h.

vtkHandleWidget* vtkLineWidget2::LineHandle

protected

Definition at line 161 of file vtkLineWidget2.h.

char vtkLineWidget2::ActiveKeyCode

protected

Definition at line 163 of file vtkLineWidget2.h.

vtkCallbackCommand* vtkLineWidget2::KeyEventCallbackCommand

protected

Definition at line 164 of file vtkLineWidget2.h.

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

/home/demarle/Source/VTK/release/8.2/build/Utilities/Doxygen/dox/Interaction/Widgets/vtkLineWidget2.h

Public Member Functions

Static Public Member Functions

Protected Types

Protected Member Functions

Static Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Member Typedef Documentation

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation