3D widget for manipulating a spline More...

#include <vtkSplineWidget.h>

Inheritance diagram for vtkSplineWidget:

Collaboration diagram for vtkSplineWidget:

Public Types
typedef vtk3DWidget	Superclass

Public Types inherited from vtk3DWidget
typedef vtkInteractorObserver	Superclass

Public Types inherited from vtkInteractorObserver
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. More...

vtkSplineWidget *	NewInstance () const

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

void	SetPlaneSource (vtkPlaneSource *plane)
	Set up a reference to a vtkPlaneSource that could be from another widget object, e.g. More...

virtual void	SetProjectionNormal (int)

virtual int	GetProjectionNormal ()

void	SetProjectionNormalToXAxes ()

void	SetProjectionNormalToYAxes ()

void	SetProjectionNormalToZAxes ()

void	SetProjectionNormalToOblique ()

void	GetPolyData (vtkPolyData *pd)
	Grab the polydata (including points) that defines the spline. More...

int	IsClosed ()
	Convenience method to determine whether the spline is closed in a geometric sense. More...

double	GetSummedLength ()
	Get the approximate vs. More...

void	InitializeHandles (vtkPoints *points)
	Convenience method to allocate and set the handles from a vtkPoints instance. More...


void	SetEnabled (int) override
	Methods that satisfy the superclass' API. More...

void	PlaceWidget (double bounds[6]) override
	Methods that satisfy the superclass' API. More...

void	PlaceWidget () override
	Methods that satisfy the superclass' API. More...

void	PlaceWidget (double xmin, double xmax, double ymin, double ymax, double zmin, double zmax) override
	Methods that satisfy the superclass' API. More...


virtual void	SetProjectToPlane (vtkTypeBool)
	Force the spline widget to be projected onto one of the orthogonal planes. More...

virtual vtkTypeBool	GetProjectToPlane ()
	Force the spline widget to be projected onto one of the orthogonal planes. More...

virtual void	ProjectToPlaneOn ()
	Force the spline widget to be projected onto one of the orthogonal planes. More...

virtual void	ProjectToPlaneOff ()
	Force the spline widget to be projected onto one of the orthogonal planes. More...


void	SetProjectionPosition (double position)
	Set the position of spline handles and points in terms of a plane's position. More...

virtual double	GetProjectionPosition ()
	Set the position of spline handles and points in terms of a plane's position. More...


virtual void	SetHandleProperty (vtkProperty *)
	Set/Get the handle properties (the spheres are the handles). More...

virtual vtkProperty *	GetHandleProperty ()
	Set/Get the handle properties (the spheres are the handles). More...

virtual void	SetSelectedHandleProperty (vtkProperty *)
	Set/Get the handle properties (the spheres are the handles). More...

virtual vtkProperty *	GetSelectedHandleProperty ()
	Set/Get the handle properties (the spheres are the handles). More...


virtual void	SetLineProperty (vtkProperty *)
	Set/Get the line properties. More...

virtual vtkProperty *	GetLineProperty ()
	Set/Get the line properties. More...

virtual void	SetSelectedLineProperty (vtkProperty *)
	Set/Get the line properties. More...

virtual vtkProperty *	GetSelectedLineProperty ()
	Set/Get the line properties. More...


virtual void	SetNumberOfHandles (int npts)
	Set/Get the number of handles for this widget. More...

virtual int	GetNumberOfHandles ()
	Set/Get the number of handles for this widget. More...


void	SetResolution (int resolution)
	Set/Get the number of line segments representing the spline for this widget. More...

virtual int	GetResolution ()
	Set/Get the number of line segments representing the spline for this widget. More...


virtual void	SetParametricSpline (vtkParametricSpline *)
	Set the parametric spline object. More...

virtual vtkParametricSpline *	GetParametricSpline ()
	Set the parametric spline object. More...


void	SetHandlePosition (int handle, double x, double y, double z)
	Set/Get the position of the spline handles. More...

void	SetHandlePosition (int handle, double xyz[3])
	Set/Get the position of the spline handles. More...

void	GetHandlePosition (int handle, double xyz[3])
	Set/Get the position of the spline handles. More...

double *	GetHandlePosition (int handle)
	Set/Get the position of the spline handles. More...


void	SetClosed (vtkTypeBool closed)
	Control whether the spline is open or closed. More...

virtual vtkTypeBool	GetClosed ()
	Control whether the spline is open or closed. More...

virtual void	ClosedOn ()
	Control whether the spline is open or closed. More...

virtual void	ClosedOff ()
	Control whether the spline is open or closed. More...


virtual void	SetProcessEvents (vtkTypeBool)
	Turn on / off event processing for this widget. More...

virtual vtkTypeBool	GetProcessEvents ()
	Turn on / off event processing for this widget. More...

virtual void	ProcessEventsOn ()
	Turn on / off event processing for this widget. More...

virtual void	ProcessEventsOff ()
	Turn on / off event processing for this widget. More...

Public Member Functions inherited from vtk3DWidget
virtual vtkTypeBool	IsA (const char *type)
	Return 1 if this class is the same type of (or a subclass of) the named class. More...

vtk3DWidget *	NewInstance () const

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

virtual void	SetProp3D (vtkProp3D *)
	Specify a vtkProp3D around which to place the widget. More...

virtual vtkProp3D *	GetProp3D ()
	Specify a vtkProp3D around which to place the widget. More...

virtual void	SetInputData (vtkDataSet *)
	Specify the input dataset. More...

virtual void	SetInputConnection (vtkAlgorithmOutput *)
	Specify the input dataset. More...

virtual vtkDataSet *	GetInput ()
	Specify the input dataset. More...

virtual void	SetPlaceFactor (double)
	Set/Get a factor representing the scaling of the widget upon placement (via the PlaceWidget() method). More...

virtual double	GetPlaceFactor ()
	Set/Get a factor representing the scaling of the widget upon placement (via the PlaceWidget() method). More...

virtual void	SetHandleSize (double)
	Set/Get the factor that controls the size of the handles that appear as part of the widget. More...

virtual double	GetHandleSize ()
	Set/Get the factor that controls the size of the handles that appear as part of the widget. More...

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

vtkInteractorObserver *	NewInstance () const

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

virtual void	SetEnabled (int)
	Methods for turning the interactor observer on and off, and determining its state. 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 void	SetPriority (float)
	Set/Get the priority at which events are processed. 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	PrintSelf (ostream &os, vtkIndent indent) override
	Methods invoked by print to print information about the object including superclasses. 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 vtkTypeBool	IsA (const char *name)
	Return 1 if this class is the same type of (or a subclass of) the named class. More...

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). 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...

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

static vtkTypeBool	IsTypeOf (const char *type)

static vtkSplineWidget *	SafeDownCast (vtkObjectBase *o)

Static Public Member Functions inherited from vtk3DWidget
static vtkTypeBool	IsTypeOf (const char *type)

static vtk3DWidget *	SafeDownCast (vtkObjectBase *o)

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 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). More...

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

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

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. More...

Protected Types
enum	WidgetState { Start = 0 , Moving , Scaling , Spinning , Inserting , Erasing , Outside }

Protected Member Functions
virtual vtkObjectBase *	NewInstanceInternal () const

	vtkSplineWidget ()

	~vtkSplineWidget () override

void	OnLeftButtonDown ()

void	OnLeftButtonUp ()

void	OnMiddleButtonDown ()

void	OnMiddleButtonUp ()

void	OnRightButtonDown ()

void	OnRightButtonUp ()

void	OnMouseMove ()

void	ProjectPointsToPlane ()

void	ProjectPointsToOrthoPlane ()

void	ProjectPointsToObliquePlane ()

void	BuildRepresentation ()

void	HighlightLine (int highlight)

void	Initialize ()

int	HighlightHandle (vtkProp *prop)

void	SizeHandles () override

void	InsertHandleOnLine (double *pos)

void	EraseHandle (const int &)

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

void	MovePoint (double p1, double p2)

void	Scale (double p1, double p2, int X, int Y)

void	Translate (double p1, double p2)

void	Spin (double p1, double p2, double *vpn)

void	CreateDefaultProperties ()

void	CalculateCentroid ()

Protected Member Functions inherited from vtk3DWidget
virtual vtkObjectBase *	NewInstanceInternal () const

	vtk3DWidget ()

	~vtk3DWidget () override

void	AdjustBounds (double bounds[6], double newBounds[6], double center[3])

double	SizeHandles (double factor)

virtual void	SizeHandles ()

void	UpdateInput ()

Protected Member Functions inherited from vtkInteractorObserver
virtual vtkObjectBase *	NewInstanceInternal () const

	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	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	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...

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

static vtkReallocingFunction	GetCurrentReallocFunction ()

static vtkFreeingFunction	GetCurrentFreeFunction ()

static vtkFreeingFunction	GetAlternateFreeFunction ()

Protected Attributes
int	State

int	ProjectionNormal

double	ProjectionPosition

vtkTypeBool	ProjectToPlane

vtkPlaneSource *	PlaneSource

vtkParametricSpline *	ParametricSpline

vtkParametricFunctionSource *	ParametricFunctionSource

int	NumberOfHandles

vtkTypeBool	Closed

vtkActor *	LineActor

int	Resolution

vtkActor **	Handle

vtkSphereSource **	HandleGeometry

vtkCellPicker *	HandlePicker

vtkCellPicker *	LinePicker

vtkActor *	CurrentHandle

int	CurrentHandleIndex

vtkTransform *	Transform

vtkProperty *	HandleProperty

vtkProperty *	SelectedHandleProperty

vtkProperty *	LineProperty

vtkProperty *	SelectedLineProperty

double	Centroid [3]

vtkTypeBool	ProcessEvents

Protected Attributes inherited from vtk3DWidget
vtkProp3D *	Prop3D

vtk3DWidgetConnection *	ConnectionHolder

double	PlaceFactor

int	Placed

double	InitialBounds [6]

double	InitialLength

double	HandleSize

int	ValidPick

double	LastPickPosition [3]

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
std::atomic< int32_t >	ReferenceCount

vtkWeakPointerBase **	WeakPointers

Detailed Description

3D widget for manipulating a spline

This 3D widget defines a spline that can be interactively placed in a scene. The spline has handles, the number of which can be changed, plus it can be picked on the spline itself to translate or rotate it in the scene. A nice feature of the object is that the vtkSplineWidget, like any 3D widget, will work with the current interactor style. That is, if vtkSplineWidget does not handle an event, then all other registered observers (including the interactor style) have an opportunity to process the event. Otherwise, the vtkSplineWidget will terminate the processing of the event that it handles.

To use this object, just invoke SetInteractor() with the argument of the method a vtkRenderWindowInteractor. You may also wish to invoke "PlaceWidget()" to initially position the widget. The interactor will act normally until the "i" key (for "interactor") is pressed, at which point the vtkSplineWidget will appear. (See superclass documentation for information about changing this behavior.) Events that occur outside of the widget (i.e., no part of the widget is picked) are propagated to any other registered obsevers (such as the interaction style). Turn off the widget by pressing the "i" key again (or invoke the Off() method).

The button actions and key modifiers are as follows for controlling the widget: 1) left button down on and drag one of the spherical handles to change the shape of the spline: the handles act as "control points". 2) left button or middle button down on a line segment forming the spline allows uniform translation of the widget. 3) ctrl + middle button down on the widget enables spinning of the widget about its center. 4) right button down on the widget enables scaling of the widget. By moving the mouse "up" the render window the spline will be made bigger; by moving "down" the render window the widget will be made smaller. 5) ctrl key + right button down on any handle will erase it providing there will be two or more points remaining to form a spline. 6) shift key + right button down on any line segment will insert a handle onto the spline at the cursor position.

The vtkSplineWidget has several methods that can be used in conjunction with other VTK objects. The Set/GetResolution() methods control the number of subdivisions of the spline; the GetPolyData() method can be used to get the polygonal representation and can be used for things like seeding streamlines or probing other data sets. Typical usage of the widget is to make use of the StartInteractionEvent, InteractionEvent, and EndInteractionEvent events. The InteractionEvent is called on mouse motion; the other two events are called on button down and button up (either left or right button).

Some additional features of this class include the ability to control the properties of the widget. You can set the properties of the selected and unselected representations of the spline. For example, you can set the property for the handles and spline. In addition there are methods to constrain the spline so that it is aligned with a plane. Note that a simple ruler widget can be derived by setting the resolution to 1, the number of handles to 2, and calling the GetSummedLength method!

Thanks:: Thanks to Dean Inglis for developing and contributing this class.

See also: vtk3DWidget vtkBoxWidget vtkLineWidget vtkPointWidget vtkSphereWidget vtkImagePlaneWidget vtkImplicitPlaneWidget vtkPlaneWidget

Online Examples:

FrenetSerretFrameDemo

Definition at line 123 of file vtkSplineWidget.h.

Member Typedef Documentation

◆ Superclass

typedef vtk3DWidget vtkSplineWidget::Superclass

Definition at line 131 of file vtkSplineWidget.h.

Member Enumeration Documentation

◆ WidgetState

enum vtkSplineWidget::WidgetState

protected

Enumerator
Start
Moving
Scaling
Spinning
Inserting
Erasing
Outside

Definition at line 310 of file vtkSplineWidget.h.

Constructor & Destructor Documentation

◆ vtkSplineWidget()

vtkSplineWidget::vtkSplineWidget ( )

protected

◆ ~vtkSplineWidget()

vtkSplineWidget::~vtkSplineWidget ( )

overrideprotected

Member Function Documentation

◆ New()

static vtkSplineWidget * vtkSplineWidget::New ( )

static

Instantiate the object.

◆ IsTypeOf()

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

static

◆ IsA()

virtual vtkTypeBool vtkSplineWidget::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 vtk3DWidget.

◆ SafeDownCast()

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

static

◆ NewInstanceInternal()

virtual vtkObjectBase * vtkSplineWidget::NewInstanceInternal ( ) const

protectedvirtual

Reimplemented from vtk3DWidget.

◆ NewInstance()

vtkSplineWidget * vtkSplineWidget::NewInstance ( ) const

◆ PrintSelf()

void vtkSplineWidget::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 vtk3DWidget.

◆ SetEnabled()

void vtkSplineWidget::SetEnabled ( int )

overridevirtual

Methods that satisfy the superclass' API.

Reimplemented from vtkInteractorObserver.

◆ PlaceWidget() [1/3]

void vtkSplineWidget::PlaceWidget ( double bounds[6] )

overridevirtual

Methods that satisfy the superclass' API.

Implements vtk3DWidget.

◆ PlaceWidget() [2/3]

void vtkSplineWidget::PlaceWidget ( )

inlineoverridevirtual

Methods that satisfy the superclass' API.

Reimplemented from vtk3DWidget.

Definition at line 140 of file vtkSplineWidget.h.

◆ PlaceWidget() [3/3]

void vtkSplineWidget::PlaceWidget	(	double	xmin,
		double	xmax,
		double	ymin,
		double	ymax,
		double	zmin,
		double	zmax
	)

inlineoverridevirtual

Methods that satisfy the superclass' API.

Reimplemented from vtk3DWidget.

Definition at line 141 of file vtkSplineWidget.h.

◆ SetProjectToPlane()

virtual void vtkSplineWidget::SetProjectToPlane ( vtkTypeBool )

virtual

Force the spline widget to be projected onto one of the orthogonal planes.

Remember that when the state changes, a ModifiedEvent is invoked. This can be used to snap the spline to the plane if it is originally not aligned. The normal in SetProjectionNormal is 0,1,2 for YZ,XZ,XY planes respectively and 3 for arbitrary oblique planes when the widget is tied to a vtkPlaneSource.

◆ GetProjectToPlane()

virtual vtkTypeBool vtkSplineWidget::GetProjectToPlane ( )

virtual

Force the spline widget to be projected onto one of the orthogonal planes.

Remember that when the state changes, a ModifiedEvent is invoked. This can be used to snap the spline to the plane if it is originally not aligned. The normal in SetProjectionNormal is 0,1,2 for YZ,XZ,XY planes respectively and 3 for arbitrary oblique planes when the widget is tied to a vtkPlaneSource.

◆ ProjectToPlaneOn()

virtual void vtkSplineWidget::ProjectToPlaneOn ( )

virtual

Force the spline widget to be projected onto one of the orthogonal planes.

Remember that when the state changes, a ModifiedEvent is invoked. This can be used to snap the spline to the plane if it is originally not aligned. The normal in SetProjectionNormal is 0,1,2 for YZ,XZ,XY planes respectively and 3 for arbitrary oblique planes when the widget is tied to a vtkPlaneSource.

◆ ProjectToPlaneOff()

virtual void vtkSplineWidget::ProjectToPlaneOff ( )

virtual

Force the spline widget to be projected onto one of the orthogonal planes.

Remember that when the state changes, a ModifiedEvent is invoked. This can be used to snap the spline to the plane if it is originally not aligned. The normal in SetProjectionNormal is 0,1,2 for YZ,XZ,XY planes respectively and 3 for arbitrary oblique planes when the widget is tied to a vtkPlaneSource.

◆ SetPlaneSource()

void vtkSplineWidget::SetPlaneSource ( vtkPlaneSource * plane )

Set up a reference to a vtkPlaneSource that could be from another widget object, e.g.

a vtkPolyDataSourceWidget.

◆ SetProjectionNormal()

virtual void vtkSplineWidget::SetProjectionNormal ( int )

virtual

◆ GetProjectionNormal()

virtual int vtkSplineWidget::GetProjectionNormal ( )

virtual

◆ SetProjectionNormalToXAxes()

void vtkSplineWidget::SetProjectionNormalToXAxes ( )

inline

Definition at line 170 of file vtkSplineWidget.h.

◆ SetProjectionNormalToYAxes()

void vtkSplineWidget::SetProjectionNormalToYAxes ( )

inline

Definition at line 171 of file vtkSplineWidget.h.

◆ SetProjectionNormalToZAxes()

void vtkSplineWidget::SetProjectionNormalToZAxes ( )

inline

Definition at line 172 of file vtkSplineWidget.h.

◆ SetProjectionNormalToOblique()

void vtkSplineWidget::SetProjectionNormalToOblique ( )

inline

Definition at line 173 of file vtkSplineWidget.h.

◆ SetProjectionPosition()

void vtkSplineWidget::SetProjectionPosition ( double position )

Set the position of spline handles and points in terms of a plane's position.

i.e., if ProjectionNormal is 0, all of the x-coordinate values of the points are set to position. Any value can be passed (and is ignored) to update the spline points when Projection normal is set to 3 for arbitrary plane orientations.

◆ GetProjectionPosition()

virtual double vtkSplineWidget::GetProjectionPosition ( )

virtual

Set the position of spline handles and points in terms of a plane's position.

i.e., if ProjectionNormal is 0, all of the x-coordinate values of the points are set to position. Any value can be passed (and is ignored) to update the spline points when Projection normal is set to 3 for arbitrary plane orientations.

◆ GetPolyData()

void vtkSplineWidget::GetPolyData ( vtkPolyData * pd )

Grab the polydata (including points) that defines the spline.

The polydata consists of points and line segments numbering Resolution + 1 and Resoltuion, respectively. Points are guaranteed to be up-to-date when either the InteractionEvent or EndInteraction events are invoked. The user provides the vtkPolyData and the points and polyline are added to it.

◆ SetHandleProperty()

virtual void vtkSplineWidget::SetHandleProperty ( vtkProperty * )

virtual

Set/Get the handle properties (the spheres are the handles).

The properties of the handles when selected and unselected can be manipulated.

◆ GetHandleProperty()

virtual vtkProperty * vtkSplineWidget::GetHandleProperty ( )

virtual

Set/Get the handle properties (the spheres are the handles).

The properties of the handles when selected and unselected can be manipulated.

◆ SetSelectedHandleProperty()

virtual void vtkSplineWidget::SetSelectedHandleProperty ( vtkProperty * )

virtual

Set/Get the handle properties (the spheres are the handles).

The properties of the handles when selected and unselected can be manipulated.

◆ GetSelectedHandleProperty()

virtual vtkProperty * vtkSplineWidget::GetSelectedHandleProperty ( )

virtual

Set/Get the handle properties (the spheres are the handles).

The properties of the handles when selected and unselected can be manipulated.

◆ SetLineProperty()

virtual void vtkSplineWidget::SetLineProperty ( vtkProperty * )

virtual

Set/Get the line properties.

The properties of the line when selected and unselected can be manipulated.

◆ GetLineProperty()

virtual vtkProperty * vtkSplineWidget::GetLineProperty ( )

virtual

Set/Get the line properties.

The properties of the line when selected and unselected can be manipulated.

◆ SetSelectedLineProperty()

virtual void vtkSplineWidget::SetSelectedLineProperty ( vtkProperty * )

virtual

Set/Get the line properties.

The properties of the line when selected and unselected can be manipulated.

◆ GetSelectedLineProperty()

virtual vtkProperty * vtkSplineWidget::GetSelectedLineProperty ( )

virtual

Set/Get the line properties.

The properties of the line when selected and unselected can be manipulated.

◆ SetNumberOfHandles()

virtual void vtkSplineWidget::SetNumberOfHandles ( int npts )

virtual

Set/Get the number of handles for this widget.

◆ GetNumberOfHandles()

virtual int vtkSplineWidget::GetNumberOfHandles ( )

virtual

Set/Get the number of handles for this widget.

◆ SetResolution()

void vtkSplineWidget::SetResolution ( int resolution )

Set/Get the number of line segments representing the spline for this widget.

◆ GetResolution()

virtual int vtkSplineWidget::GetResolution ( )

virtual

Set/Get the number of line segments representing the spline for this widget.

◆ SetParametricSpline()

virtual void vtkSplineWidget::SetParametricSpline ( vtkParametricSpline * )

virtual

Set the parametric spline object.

Through vtkParametricSpline's API, the user can supply and configure one of currently two types of spline: vtkCardinalSpline, vtkKochanekSpline. The widget controls the open or closed configuration of the spline. WARNING: The widget does not enforce internal consistency so that all three are of the same type.

◆ GetParametricSpline()

virtual vtkParametricSpline * vtkSplineWidget::GetParametricSpline ( )

virtual

Set the parametric spline object.

Through vtkParametricSpline's API, the user can supply and configure one of currently two types of spline: vtkCardinalSpline, vtkKochanekSpline. The widget controls the open or closed configuration of the spline. WARNING: The widget does not enforce internal consistency so that all three are of the same type.

◆ SetHandlePosition() [1/2]

void vtkSplineWidget::SetHandlePosition	(	int	handle,
		double	x,
		double	y,
		double	z
	)

Set/Get the position of the spline handles.

Call GetNumberOfHandles to determine the valid range of handle indices.

◆ SetHandlePosition() [2/2]

void vtkSplineWidget::SetHandlePosition	(	int	handle,
		double	xyz[3]
	)

Set/Get the position of the spline handles.

Call GetNumberOfHandles to determine the valid range of handle indices.

◆ GetHandlePosition() [1/2]

void vtkSplineWidget::GetHandlePosition	(	int	handle,
		double	xyz[3]
	)

Set/Get the position of the spline handles.

Call GetNumberOfHandles to determine the valid range of handle indices.

◆ GetHandlePosition() [2/2]

double * vtkSplineWidget::GetHandlePosition ( int handle )

Set/Get the position of the spline handles.

Call GetNumberOfHandles to determine the valid range of handle indices.

◆ SetClosed()

void vtkSplineWidget::SetClosed ( vtkTypeBool closed )

Control whether the spline is open or closed.

A closed spline forms a continuous loop: the first and last points are the same, and derivatives are continuous. A minimum of 3 handles are required to form a closed loop. This method enforces consistency with user supplied subclasses of vtkSpline.

◆ GetClosed()

virtual vtkTypeBool vtkSplineWidget::GetClosed ( )

virtual

Control whether the spline is open or closed.

A closed spline forms a continuous loop: the first and last points are the same, and derivatives are continuous. A minimum of 3 handles are required to form a closed loop. This method enforces consistency with user supplied subclasses of vtkSpline.

◆ ClosedOn()

virtual void vtkSplineWidget::ClosedOn ( )

virtual

Control whether the spline is open or closed.

A closed spline forms a continuous loop: the first and last points are the same, and derivatives are continuous. A minimum of 3 handles are required to form a closed loop. This method enforces consistency with user supplied subclasses of vtkSpline.

◆ ClosedOff()

virtual void vtkSplineWidget::ClosedOff ( )

virtual

Control whether the spline is open or closed.

A closed spline forms a continuous loop: the first and last points are the same, and derivatives are continuous. A minimum of 3 handles are required to form a closed loop. This method enforces consistency with user supplied subclasses of vtkSpline.

◆ IsClosed()

int vtkSplineWidget::IsClosed ( )

Convenience method to determine whether the spline is closed in a geometric sense.

The widget may be set "closed" but still be geometrically open (e.g., a straight line).

◆ GetSummedLength()

double vtkSplineWidget::GetSummedLength ( )

Get the approximate vs.

the true arc length of the spline. Calculated as the summed lengths of the individual straight line segments. Use SetResolution to control the accuracy.

◆ InitializeHandles()

void vtkSplineWidget::InitializeHandles ( vtkPoints * points )

Convenience method to allocate and set the handles from a vtkPoints instance.

If the first and last points are the same, the spline sets Closed to the on state and disregards the last point, otherwise Closed remains unchanged.

◆ SetProcessEvents()

virtual void vtkSplineWidget::SetProcessEvents ( vtkTypeBool )

virtual

Turn on / off event processing for this widget.

If off, the widget will not respond to user interaction

◆ GetProcessEvents()

virtual vtkTypeBool vtkSplineWidget::GetProcessEvents ( )

virtual

Turn on / off event processing for this widget.

If off, the widget will not respond to user interaction

◆ ProcessEventsOn()

virtual void vtkSplineWidget::ProcessEventsOn ( )

virtual

Turn on / off event processing for this widget.

If off, the widget will not respond to user interaction

◆ ProcessEventsOff()

virtual void vtkSplineWidget::ProcessEventsOff ( )

virtual

Turn on / off event processing for this widget.

If off, the widget will not respond to user interaction

◆ ProcessEventsHandler()

static void vtkSplineWidget::ProcessEventsHandler	(	vtkObject *	object,
		unsigned long	event,
		void *	clientdata,
		void *	calldata
	)

staticprotected

◆ OnLeftButtonDown()

void vtkSplineWidget::OnLeftButtonDown ( )

protected

◆ OnLeftButtonUp()

void vtkSplineWidget::OnLeftButtonUp ( )

protected

◆ OnMiddleButtonDown()

void vtkSplineWidget::OnMiddleButtonDown ( )

protected

◆ OnMiddleButtonUp()

void vtkSplineWidget::OnMiddleButtonUp ( )

protected

◆ OnRightButtonDown()

void vtkSplineWidget::OnRightButtonDown ( )

protected

◆ OnRightButtonUp()

void vtkSplineWidget::OnRightButtonUp ( )

protected

◆ OnMouseMove()

void vtkSplineWidget::OnMouseMove ( )

protected

◆ ProjectPointsToPlane()

void vtkSplineWidget::ProjectPointsToPlane ( )

protected

◆ ProjectPointsToOrthoPlane()

void vtkSplineWidget::ProjectPointsToOrthoPlane ( )

protected

◆ ProjectPointsToObliquePlane()

void vtkSplineWidget::ProjectPointsToObliquePlane ( )

protected

◆ BuildRepresentation()

void vtkSplineWidget::BuildRepresentation ( )

protected

◆ HighlightLine()

void vtkSplineWidget::HighlightLine ( int highlight )

protected

◆ Initialize()

void vtkSplineWidget::Initialize ( )

protected

◆ HighlightHandle()

int vtkSplineWidget::HighlightHandle ( vtkProp * prop )

protected

◆ SizeHandles()

void vtkSplineWidget::SizeHandles ( )

overrideprotectedvirtual

Reimplemented from vtk3DWidget.

◆ InsertHandleOnLine()

void vtkSplineWidget::InsertHandleOnLine ( double * pos )

protected

◆ EraseHandle()

void vtkSplineWidget::EraseHandle ( const int & )

protected

◆ RegisterPickers()

void vtkSplineWidget::RegisterPickers ( )

overrideprotectedvirtual

Register internal Pickers in the Picking Manager.

Must be reimplemented by concrete widgets to register their pickers.

Reimplemented from vtkInteractorObserver.

◆ MovePoint()

void vtkSplineWidget::MovePoint	(	double *	p1,
		double *	p2
	)

protected

◆ Scale()

void vtkSplineWidget::Scale	(	double *	p1,
		double *	p2,
		int	X,
		int	Y
	)

protected

◆ Translate()

void vtkSplineWidget::Translate	(	double *	p1,
		double *	p2
	)

protected

◆ Spin()

void vtkSplineWidget::Spin	(	double *	p1,
		double *	p2,
		double *	vpn
	)

protected

◆ CreateDefaultProperties()

void vtkSplineWidget::CreateDefaultProperties ( )

protected

◆ CalculateCentroid()

void vtkSplineWidget::CalculateCentroid ( )

protected

Member Data Documentation

◆ State

int vtkSplineWidget::State

protected

Definition at line 309 of file vtkSplineWidget.h.

◆ ProjectionNormal

int vtkSplineWidget::ProjectionNormal

protected

Definition at line 335 of file vtkSplineWidget.h.

◆ ProjectionPosition

double vtkSplineWidget::ProjectionPosition

protected

Definition at line 336 of file vtkSplineWidget.h.

◆ ProjectToPlane

vtkTypeBool vtkSplineWidget::ProjectToPlane

protected

Definition at line 337 of file vtkSplineWidget.h.

◆ PlaneSource

vtkPlaneSource* vtkSplineWidget::PlaneSource

protected

Definition at line 338 of file vtkSplineWidget.h.

◆ ParametricSpline

vtkParametricSpline* vtkSplineWidget::ParametricSpline

protected

Definition at line 346 of file vtkSplineWidget.h.

◆ ParametricFunctionSource

vtkParametricFunctionSource* vtkSplineWidget::ParametricFunctionSource

protected

Definition at line 347 of file vtkSplineWidget.h.

◆ NumberOfHandles

int vtkSplineWidget::NumberOfHandles

protected

Definition at line 348 of file vtkSplineWidget.h.

◆ Closed

vtkTypeBool vtkSplineWidget::Closed

protected

Definition at line 349 of file vtkSplineWidget.h.

◆ LineActor

vtkActor* vtkSplineWidget::LineActor

protected

Definition at line 353 of file vtkSplineWidget.h.

◆ Resolution

int vtkSplineWidget::Resolution

protected

Definition at line 355 of file vtkSplineWidget.h.

◆ Handle

vtkActor** vtkSplineWidget::Handle

protected

Definition at line 358 of file vtkSplineWidget.h.

◆ HandleGeometry

vtkSphereSource** vtkSplineWidget::HandleGeometry

protected

Definition at line 359 of file vtkSplineWidget.h.

◆ HandlePicker

vtkCellPicker* vtkSplineWidget::HandlePicker

protected

Definition at line 367 of file vtkSplineWidget.h.

◆ LinePicker

vtkCellPicker* vtkSplineWidget::LinePicker

protected

Definition at line 368 of file vtkSplineWidget.h.

◆ CurrentHandle

vtkActor* vtkSplineWidget::CurrentHandle

protected

Definition at line 369 of file vtkSplineWidget.h.

◆ CurrentHandleIndex

int vtkSplineWidget::CurrentHandleIndex

protected

Definition at line 370 of file vtkSplineWidget.h.

◆ Transform

vtkTransform* vtkSplineWidget::Transform

protected

Definition at line 382 of file vtkSplineWidget.h.

◆ HandleProperty

vtkProperty* vtkSplineWidget::HandleProperty

protected

Definition at line 386 of file vtkSplineWidget.h.

◆ SelectedHandleProperty

vtkProperty* vtkSplineWidget::SelectedHandleProperty

protected

Definition at line 387 of file vtkSplineWidget.h.

◆ LineProperty

vtkProperty* vtkSplineWidget::LineProperty

protected

Definition at line 388 of file vtkSplineWidget.h.

◆ SelectedLineProperty

vtkProperty* vtkSplineWidget::SelectedLineProperty

protected

Definition at line 389 of file vtkSplineWidget.h.

◆ Centroid

double vtkSplineWidget::Centroid[3]

protected

Definition at line 393 of file vtkSplineWidget.h.

◆ ProcessEvents

vtkTypeBool vtkSplineWidget::ProcessEvents

protected

Definition at line 395 of file vtkSplineWidget.h.

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

Interaction/Widgets/vtkSplineWidget.h

Public Types

Public Member Functions

Static Public Member Functions

Protected Types

Protected Member Functions

Static Protected Member Functions

Protected Attributes

Detailed Description

Member Typedef Documentation

◆ Superclass

Member Enumeration Documentation

◆ WidgetState

Constructor & Destructor Documentation

◆ vtkSplineWidget()

◆ ~vtkSplineWidget()

Member Function Documentation

◆ New()

◆ IsTypeOf()

◆ IsA()

◆ SafeDownCast()

◆ NewInstanceInternal()

◆ NewInstance()

◆ PrintSelf()

◆ SetEnabled()

◆ PlaceWidget() [1/3]

◆ PlaceWidget() [2/3]

◆ PlaceWidget() [3/3]

◆ SetProjectToPlane()

◆ GetProjectToPlane()

◆ ProjectToPlaneOn()

◆ ProjectToPlaneOff()

◆ SetPlaneSource()

◆ SetProjectionNormal()

◆ GetProjectionNormal()

◆ SetProjectionNormalToXAxes()

◆ SetProjectionNormalToYAxes()

◆ SetProjectionNormalToZAxes()

◆ SetProjectionNormalToOblique()

◆ SetProjectionPosition()

◆ GetProjectionPosition()

◆ GetPolyData()

◆ SetHandleProperty()

◆ GetHandleProperty()

◆ SetSelectedHandleProperty()

◆ GetSelectedHandleProperty()

◆ SetLineProperty()

◆ GetLineProperty()

◆ SetSelectedLineProperty()

◆ GetSelectedLineProperty()

◆ SetNumberOfHandles()

◆ GetNumberOfHandles()

◆ SetResolution()

◆ GetResolution()

◆ SetParametricSpline()

◆ GetParametricSpline()

◆ SetHandlePosition() [1/2]

◆ SetHandlePosition() [2/2]

◆ GetHandlePosition() [1/2]

◆ GetHandlePosition() [2/2]

◆ SetClosed()

◆ GetClosed()

◆ ClosedOn()

◆ ClosedOff()

◆ IsClosed()

◆ GetSummedLength()

◆ InitializeHandles()

◆ SetProcessEvents()

◆ GetProcessEvents()

◆ ProcessEventsOn()

◆ ProcessEventsOff()

◆ ProcessEventsHandler()

◆ OnLeftButtonDown()

◆ OnLeftButtonUp()

◆ OnMiddleButtonDown()

◆ OnMiddleButtonUp()

◆ OnRightButtonDown()

◆ OnRightButtonUp()

◆ OnMouseMove()

◆ ProjectPointsToPlane()

◆ ProjectPointsToOrthoPlane()