create a leader with optional label and arrows More...

#include <vtkLeaderActor2D.h>

Inheritance diagram for vtkLeaderActor2D:

Collaboration diagram for vtkLeaderActor2D:

Public Types
enum	{ VTK_ARROW_NONE =0, VTK_ARROW_POINT1, VTK_ARROW_POINT2, VTK_ARROW_BOTH }

enum	{ VTK_ARROW_FILLED =0, VTK_ARROW_OPEN, VTK_ARROW_HOLLOW }

typedef vtkActor2D	Superclass

Public Types inherited from vtkActor2D
typedef vtkProp	Superclass

Public Types inherited from vtkProp
typedef vtkObject	Superclass

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

vtkLeaderActor2D *	NewInstance () const

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

virtual int	HasTranslucentPolygonalGeometry ()
	Does this prop have some translucent polygonal geometry? More...

void	ReleaseGraphicsResources (vtkWindow *)
	Release any graphics resources that are being consumed by this actor. More...

void	ShallowCopy (vtkProp *prop)
	Shallow copy of this vtkActor2D. More...


virtual void	SetRadius (double)
	Set/Get a radius which can be used to curve the leader. More...

virtual double	GetRadius ()
	Set/Get a radius which can be used to curve the leader. More...


virtual void	SetLabel (const char *)
	Set/Get the label for the leader. More...

virtual char *	GetLabel ()
	Set/Get the label for the leader. More...


virtual void	SetLabelTextProperty (vtkTextProperty *p)
	Set/Get the text property of the label. More...

virtual vtkTextProperty *	GetLabelTextProperty ()
	Set/Get the text property of the label. More...


virtual void	SetLabelFactor (double)
	Set/Get the factor that controls the overall size of the fonts used to label the leader. More...

virtual double	GetLabelFactor ()
	Set/Get the factor that controls the overall size of the fonts used to label the leader. More...


virtual void	SetArrowPlacement (int)
	Control whether arrow heads are drawn on the leader. More...

virtual int	GetArrowPlacement ()
	Control whether arrow heads are drawn on the leader. More...

void	SetArrowPlacementToNone ()
	Control whether arrow heads are drawn on the leader. More...

void	SetArrowPlacementToPoint1 ()
	Control whether arrow heads are drawn on the leader. More...

void	SetArrowPlacementToPoint2 ()
	Control whether arrow heads are drawn on the leader. More...

void	SetArrowPlacementToBoth ()
	Control whether arrow heads are drawn on the leader. More...


virtual void	SetArrowStyle (int)
	Control the appearance of the arrow heads. More...

virtual int	GetArrowStyle ()
	Control the appearance of the arrow heads. More...

void	SetArrowStyleToFilled ()
	Control the appearance of the arrow heads. More...

void	SetArrowStyleToOpen ()
	Control the appearance of the arrow heads. More...

void	SetArrowStyleToHollow ()
	Control the appearance of the arrow heads. More...


virtual void	SetArrowLength (double)
	Specify the arrow length and base width (in normalized viewport coordinates). More...

virtual double	GetArrowLength ()
	Specify the arrow length and base width (in normalized viewport coordinates). More...

virtual void	SetArrowWidth (double)
	Specify the arrow length and base width (in normalized viewport coordinates). More...

virtual double	GetArrowWidth ()
	Specify the arrow length and base width (in normalized viewport coordinates). More...


virtual void	SetMinimumArrowSize (double)
	Limit the minimum and maximum size of the arrows. More...

virtual double	GetMinimumArrowSize ()
	Limit the minimum and maximum size of the arrows. More...

virtual void	SetMaximumArrowSize (double)
	Limit the minimum and maximum size of the arrows. More...

virtual double	GetMaximumArrowSize ()
	Limit the minimum and maximum size of the arrows. More...


virtual void	SetAutoLabel (int)
	Enable auto-labelling. More...

virtual int	GetAutoLabel ()
	Enable auto-labelling. More...

virtual void	AutoLabelOn ()
	Enable auto-labelling. More...

virtual void	AutoLabelOff ()
	Enable auto-labelling. More...


virtual void	SetLabelFormat (const char *)
	Specify the format to use for auto-labelling. More...

virtual char *	GetLabelFormat ()
	Specify the format to use for auto-labelling. More...


virtual double	GetLength ()
	Obtain the length of the leader if the leader is not curved, otherwise obtain the angle that the leader circumscribes. More...

virtual double	GetAngle ()
	Obtain the length of the leader if the leader is not curved, otherwise obtain the angle that the leader circumscribes. More...


int	RenderOverlay (vtkViewport *viewport)
	Methods required by vtkProp and vtkActor2D superclasses. More...

int	RenderOpaqueGeometry (vtkViewport *viewport)
	Methods required by vtkProp and vtkActor2D superclasses. More...

virtual int	RenderTranslucentPolygonalGeometry (vtkViewport *)
	Methods required by vtkProp and vtkActor2D superclasses. More...

Public Member Functions inherited from vtkActor2D
void	PrintSelf (ostream &os, vtkIndent indent) override
	Methods invoked by print to print information about the object including superclasses. More...

vtkActor2D *	NewInstance () const

vtkProperty2D *	GetProperty ()
	Returns this actor's vtkProperty2D. More...

virtual void	SetProperty (vtkProperty2D *)
	Set this vtkProp's vtkProperty2D. More...

void	SetDisplayPosition (int, int)
	Set the Prop2D's position in display coordinates. More...

virtual vtkMTimeType	GetMTime () override
	Return this objects MTime. More...

virtual void	GetActors2D (vtkPropCollection *pc) override
	For some exporters and other other operations we must be able to collect all the actors or volumes. More...

virtual vtkCoordinate *	GetActualPositionCoordinate (void)
	Return the actual vtkCoordinate reference that the mapper should use to position the actor. More...

virtual vtkCoordinate *	GetActualPosition2Coordinate (void)
	Return the actual vtkCoordinate reference that the mapper should use to position the actor. More...

virtual void	SetMapper (vtkMapper2D *mapper)
	Set/Get the vtkMapper2D which defines the data to be drawn. More...

virtual vtkMapper2D *	GetMapper ()
	Set/Get the vtkMapper2D which defines the data to be drawn. More...

virtual void	SetLayerNumber (int)
	Set/Get the layer number in the overlay planes into which to render. More...

virtual int	GetLayerNumber ()
	Set/Get the layer number in the overlay planes into which to render. More...

virtual vtkCoordinate *	GetPositionCoordinate ()
	Get the PositionCoordinate instance of vtkCoordinate. More...

virtual void	SetPosition (float x[2])
	Get the PositionCoordinate instance of vtkCoordinate. More...

virtual void	SetPosition (float x, float y)
	Get the PositionCoordinate instance of vtkCoordinate. More...

virtual float *	GetPosition ()
	Get the PositionCoordinate instance of vtkCoordinate. More...

virtual vtkCoordinate *	GetPosition2Coordinate ()
	Access the Position2 instance variable. More...

virtual void	SetPosition2 (float x[2])
	Access the Position2 instance variable. More...

virtual void	SetPosition2 (float x, float y)
	Access the Position2 instance variable. More...

virtual float *	GetPosition2 ()
	Access the Position2 instance variable. More...

void	SetWidth (double w)
	Set/Get the height and width of the Actor2D. More...

double	GetWidth ()
	Set/Get the height and width of the Actor2D. More...

void	SetHeight (double h)
	Set/Get the height and width of the Actor2D. More...

double	GetHeight ()
	Set/Get the height and width of the Actor2D. More...

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

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

virtual void	GetActors (vtkPropCollection *)
	For some exporters and other other operations we must be able to collect all the actors or volumes. More...

virtual void	GetVolumes (vtkPropCollection *)

virtual void	Pick ()
	Method fires PickEvent if the prop is picked. More...

virtual vtkMTimeType	GetRedrawMTime ()
	Return the mtime of anything that would cause the rendered image to appear differently. More...

virtual double *	GetBounds ()
	Get the bounds for this Prop as (Xmin,Xmax,Ymin,Ymax,Zmin,Zmax). More...

virtual void	PokeMatrix (vtkMatrix4x4 *vtkNotUsed(matrix))
	These methods are used by subclasses to place a matrix (if any) in the prop prior to rendering. More...

virtual vtkMatrix4x4 *	GetMatrix ()

virtual bool	HasKeys (vtkInformation *requiredKeys)
	Tells if the prop has all the required keys. More...

virtual int	RenderVolumetricGeometry (vtkViewport *)

virtual bool	RenderFilteredOpaqueGeometry (vtkViewport v, vtkInformation requiredKeys)
	Render the opaque geometry only if the prop has all the requiredKeys. More...

virtual bool	RenderFilteredTranslucentPolygonalGeometry (vtkViewport v, vtkInformation requiredKeys)
	Render the translucent polygonal geometry only if the prop has all the requiredKeys. More...

virtual bool	RenderFilteredVolumetricGeometry (vtkViewport v, vtkInformation requiredKeys)
	Render the volumetric geometry only if the prop has all the requiredKeys. More...

virtual bool	RenderFilteredOverlay (vtkViewport v, vtkInformation requiredKeys)
	Render in the overlay of the viewport only if the prop has all the requiredKeys. More...

virtual double	GetEstimatedRenderTime (vtkViewport *)
	WARNING: INTERNAL METHOD - NOT INTENDED FOR GENERAL USE DO NOT USE THESE METHODS OUTSIDE OF THE RENDERING PROCESS The EstimatedRenderTime may be used to select between different props, for example in LODProp it is used to select the level-of-detail. More...

virtual double	GetEstimatedRenderTime ()

virtual void	SetEstimatedRenderTime (double t)
	WARNING: INTERNAL METHOD - NOT INTENDED FOR GENERAL USE DO NOT USE THESE METHODS OUTSIDE OF THE RENDERING PROCESS This method is used by, for example, the vtkLODProp3D in order to initialize the estimated render time at start-up to some user defined value. More...

virtual void	RestoreEstimatedRenderTime ()
	WARNING: INTERNAL METHOD - NOT INTENDED FOR GENERAL USE DO NOT USE THESE METHODS OUTSIDE OF THE RENDERING PROCESS When the EstimatedRenderTime is first set to 0.0 (in the SetAllocatedRenderTime method) the old value is saved. More...

virtual void	AddEstimatedRenderTime (double t, vtkViewport *vtkNotUsed(vp))
	WARNING: INTERNAL METHOD - NOT INTENDED FOR GENERAL USE DO NOT USE THIS METHOD OUTSIDE OF THE RENDERING PROCESS This method is intended to allow the renderer to add to the EstimatedRenderTime in props that require information that the renderer has in order to do this. More...

void	SetRenderTimeMultiplier (double t)
	WARNING: INTERNAL METHOD - NOT INTENDED FOR GENERAL USE DO NOT USE THIS METHOD OUTSIDE OF THE RENDERING PROCESS Get/Set the multiplier for the render time. More...

virtual double	GetRenderTimeMultiplier ()

virtual void	BuildPaths (vtkAssemblyPaths paths, vtkAssemblyPath path)
	WARNING: INTERNAL METHOD - NOT INTENDED FOR GENERAL USE DO NOT USE THIS METHOD OUTSIDE OF THE RENDERING PROCESS Used to construct assembly paths and perform part traversal. More...

virtual bool	GetSupportsSelection ()
	WARNING: INTERNAL METHOD - NOT INTENDED FOR GENERAL USE DO NOT USE THIS METHOD OUTSIDE OF THE RENDERING PROCESS Used by vtkHardwareSelector to determine if the prop supports hardware selection. More...

virtual void	SetVisibility (int)
	Set/Get visibility of this vtkProp. More...

virtual int	GetVisibility ()
	Set/Get visibility of this vtkProp. More...

virtual void	VisibilityOn ()
	Set/Get visibility of this vtkProp. More...

virtual void	VisibilityOff ()
	Set/Get visibility of this vtkProp. More...

virtual void	SetPickable (int)
	Set/Get the pickable instance variable. More...

virtual int	GetPickable ()
	Set/Get the pickable instance variable. More...

virtual void	PickableOn ()
	Set/Get the pickable instance variable. More...

virtual void	PickableOff ()
	Set/Get the pickable instance variable. More...

virtual void	SetDragable (int)
	Set/Get the value of the dragable instance variable. More...

virtual int	GetDragable ()
	Set/Get the value of the dragable instance variable. More...

virtual void	DragableOn ()
	Set/Get the value of the dragable instance variable. More...

virtual void	DragableOff ()
	Set/Get the value of the dragable instance variable. More...

virtual void	SetUseBounds (bool)
	In case the Visibility flag is true, tell if the bounds of this prop should be taken into account or ignored during the computation of other bounding boxes, like in vtkRenderer::ResetCamera(). More...

virtual bool	GetUseBounds ()
	In case the Visibility flag is true, tell if the bounds of this prop should be taken into account or ignored during the computation of other bounding boxes, like in vtkRenderer::ResetCamera(). More...

virtual void	UseBoundsOn ()
	In case the Visibility flag is true, tell if the bounds of this prop should be taken into account or ignored during the computation of other bounding boxes, like in vtkRenderer::ResetCamera(). More...

virtual void	UseBoundsOff ()
	In case the Visibility flag is true, tell if the bounds of this prop should be taken into account or ignored during the computation of other bounding boxes, like in vtkRenderer::ResetCamera(). More...

virtual void	InitPathTraversal ()
	vtkProp and its subclasses can be picked by subclasses of vtkAbstractPicker (e.g., vtkPropPicker). More...

virtual vtkAssemblyPath *	GetNextPath ()
	vtkProp and its subclasses can be picked by subclasses of vtkAbstractPicker (e.g., vtkPropPicker). More...

virtual int	GetNumberOfPaths ()
	vtkProp and its subclasses can be picked by subclasses of vtkAbstractPicker (e.g., vtkPropPicker). More...

virtual vtkInformation *	GetPropertyKeys ()
	Set/Get property keys. More...

virtual void	SetPropertyKeys (vtkInformation *keys)
	Set/Get property keys. More...

virtual void	SetAllocatedRenderTime (double t, vtkViewport *vtkNotUsed(v))
	WARNING: INTERNAL METHOD - NOT INTENDED FOR GENERAL USE DO NOT USE THIS METHOD OUTSIDE OF THE RENDERING PROCESS The renderer may use the allocated rendering time to determine how to render this actor. More...

virtual double	GetAllocatedRenderTime ()
	WARNING: INTERNAL METHOD - NOT INTENDED FOR GENERAL USE DO NOT USE THIS METHOD OUTSIDE OF THE RENDERING PROCESS. More...

virtual int	GetNumberOfConsumers ()
	Get the number of consumers. More...

void	AddConsumer (vtkObject *c)
	Add or remove or get or check a consumer,. More...

void	RemoveConsumer (vtkObject *c)
	Add or remove or get or check a consumer,. More...

vtkObject *	GetConsumer (int i)
	Add or remove or get or check a consumer,. More...

int	IsConsumer (vtkObject *c)
	Add or remove or get or check a consumer,. 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...

void	RemoveObserver (unsigned long tag)

void	RemoveObservers (unsigned long event)

void	RemoveObservers (const char *event)

void	RemoveAllObservers ()

int	HasObserver (unsigned long event)

int	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...

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

int	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 int	IsTypeOf (const char *type)

static vtkLeaderActor2D *	SafeDownCast (vtkObjectBase *o)

static vtkLeaderActor2D *	New ()
	Instantiate object. More...

Static Public Member Functions inherited from vtkActor2D
static int	IsTypeOf (const char *type)

static vtkActor2D *	SafeDownCast (vtkObjectBase *o)

static vtkActor2D *	New ()
	Creates an actor2D with the following defaults: position (0,0) (coordinate system is viewport); at layer 0. More...

Static Public Member Functions inherited from vtkProp
static int	IsTypeOf (const char *type)

static vtkProp *	SafeDownCast (vtkObjectBase *o)

static vtkInformationIntegerKey *	GeneralTextureUnit ()
	Optional Key Indicating the texture unit for general texture mapping Old OpenGL was a state machine where you would push or pop items. More...

static vtkInformationDoubleVectorKey *	GeneralTextureTransform ()
	Optional Key Indicating the texture transform for general texture mapping Old OpenGL was a state machine where you would push or pop items. 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 Member Functions
virtual vtkObjectBase *	NewInstanceInternal () const

	vtkLeaderActor2D ()

	~vtkLeaderActor2D ()

virtual void	BuildLeader (vtkViewport *viewport)

int	SetFontSize (vtkViewport viewport, vtkTextMapper textMapper, int targetSize, double factor, int stringSize)

int	ClipLeader (double xL[3], int stringSize[2], double p1[3], double ray[3], double c1[3], double c2[3])

void	BuildCurvedLeader (double p1[3], double p2[3], double ray[3], double rayLength, double theta, vtkViewport *viewport, int viewportChanged)

int	InStringBox (double center[3], int stringSize[2], double x[3])

Protected Member Functions inherited from vtkActor2D
	vtkActor2D ()

	~vtkActor2D ()

Protected Member Functions inherited from vtkProp
	vtkProp ()

	~vtkProp ()

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=NULL)
	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 &)

Protected Attributes
double	Radius

double	Length

double	Angle

int	AutoLabel

char *	LabelFormat

char *	Label

double	LabelFactor

vtkTextMapper *	LabelMapper

vtkActor2D *	LabelActor

vtkTextProperty *	LabelTextProperty

int	ArrowPlacement

int	ArrowStyle

double	ArrowLength

double	ArrowWidth

double	MinimumArrowSize

double	MaximumArrowSize

vtkPoints *	LeaderPoints

vtkCellArray *	LeaderLines

vtkCellArray *	LeaderArrows

vtkPolyData *	Leader

vtkPolyDataMapper2D *	LeaderMapper

vtkActor2D *	LeaderActor

int	LastPosition [2]

int	LastPosition2 [2]

int	LastSize [2]

vtkTimeStamp	BuildTime

Protected Attributes inherited from vtkActor2D
vtkMapper2D *	Mapper

int	LayerNumber

vtkProperty2D *	Property

vtkCoordinate *	PositionCoordinate

vtkCoordinate *	Position2Coordinate

Protected Attributes inherited from vtkProp
int	Visibility

int	Pickable

int	Dragable

bool	UseBounds

double	AllocatedRenderTime

double	EstimatedRenderTime

double	SavedEstimatedRenderTime

double	RenderTimeMultiplier

int	NumberOfConsumers

vtkObject **	Consumers

vtkAssemblyPaths *	Paths

vtkInformation *	PropertyKeys

Protected Attributes inherited from vtkObject
bool	Debug

vtkTimeStamp	MTime

vtkSubjectHelper *	SubjectHelper

Protected Attributes inherited from vtkObjectBase
vtkAtomicInt32	ReferenceCount

vtkWeakPointerBase **	WeakPointers

Detailed Description

create a leader with optional label and arrows

vtkLeaderActor2D creates a leader with an optional label and arrows. (A leader is typically used to indicate distance between points.) vtkLeaderActor2D is a type of vtkActor2D; that is, it is drawn on the overlay plane and is not occluded by 3D geometry. To use this class, you typically specify two points defining the start and end points of the line (x-y definition using vtkCoordinate class), whether to place arrows on one or both end points, and whether to label the leader. Also, this class has a special feature that allows curved leaders to be created by specifying a radius.

Use the vtkLeaderActor2D uses its superclass vtkActor2D instance variables Position and Position2 vtkCoordinates to place an instance of vtkLeaderActor2D (i.e., these two data members represent the start and end points of the leader). Using these vtkCoordinates you can specify the position of the leader in a variety of coordinate systems.

To control the appearance of the actor, use the superclasses vtkActor2D::vtkProperty2D and the vtkTextProperty objects associated with this actor.

See also: vtkAxisActor2D vtkActor2D vtkCoordinate vtkTextProperty

Tests:: vtkLeaderActor2D (Tests)

Definition at line 59 of file vtkLeaderActor2D.h.

Member Typedef Documentation

typedef vtkActor2D vtkLeaderActor2D::Superclass

Definition at line 62 of file vtkLeaderActor2D.h.

Member Enumeration Documentation

anonymous enum

Enumerator
VTK_ARROW_NONE
VTK_ARROW_POINT1
VTK_ARROW_POINT2
VTK_ARROW_BOTH

Definition at line 115 of file vtkLeaderActor2D.h.

anonymous enum

Enumerator
VTK_ARROW_FILLED
VTK_ARROW_OPEN
VTK_ARROW_HOLLOW

Definition at line 116 of file vtkLeaderActor2D.h.

Constructor & Destructor Documentation

vtkLeaderActor2D::vtkLeaderActor2D ( )

protected

vtkLeaderActor2D::~vtkLeaderActor2D ( )

protected

Member Function Documentation

static int vtkLeaderActor2D::IsTypeOf ( const char * type )

static

virtual int vtkLeaderActor2D::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 vtkActor2D.

static vtkLeaderActor2D* vtkLeaderActor2D::SafeDownCast ( vtkObjectBase * o )

static

virtual vtkObjectBase* vtkLeaderActor2D::NewInstanceInternal ( ) const

protectedvirtual

Reimplemented from vtkActor2D.

vtkLeaderActor2D* vtkLeaderActor2D::NewInstance ( ) const

void vtkLeaderActor2D::PrintSelf	(	ostream &	os,
		vtkIndent	indent
	)

virtual

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.

static vtkLeaderActor2D* vtkLeaderActor2D::New ( )

static

Instantiate object.

virtual void vtkLeaderActor2D::SetRadius ( double )

virtual

Set/Get a radius which can be used to curve the leader.

If a radius is specified whose absolute value is greater than one half the distance between the two points defined by the superclasses' Position and Position2 ivars, then the leader will be curved. A positive radius will produce a curve such that the center is to the right of the line from Position and Position2; a negative radius will produce a curve in the opposite sense. By default, the radius is set to zero and thus there is no curvature. Note that the radius is expresses as a multiple of the distance between (Position,Position2); this avoids issues relative to coordinate system transformations.

virtual double vtkLeaderActor2D::GetRadius ( )

virtual

Set/Get a radius which can be used to curve the leader.

If a radius is specified whose absolute value is greater than one half the distance between the two points defined by the superclasses' Position and Position2 ivars, then the leader will be curved. A positive radius will produce a curve such that the center is to the right of the line from Position and Position2; a negative radius will produce a curve in the opposite sense. By default, the radius is set to zero and thus there is no curvature. Note that the radius is expresses as a multiple of the distance between (Position,Position2); this avoids issues relative to coordinate system transformations.

virtual void vtkLeaderActor2D::SetLabel ( const char * )

virtual

Set/Get the label for the leader.

If the label is an empty string, then it will not be drawn.

virtual char* vtkLeaderActor2D::GetLabel ( )

virtual

Set/Get the label for the leader.

If the label is an empty string, then it will not be drawn.

virtual void vtkLeaderActor2D::SetLabelTextProperty ( vtkTextProperty * p )

virtual

Set/Get the text property of the label.

virtual vtkTextProperty* vtkLeaderActor2D::GetLabelTextProperty ( )

virtual

Set/Get the text property of the label.

virtual void vtkLeaderActor2D::SetLabelFactor ( double )

virtual

Set/Get the factor that controls the overall size of the fonts used to label the leader.

virtual double vtkLeaderActor2D::GetLabelFactor ( )

virtual

Set/Get the factor that controls the overall size of the fonts used to label the leader.

virtual void vtkLeaderActor2D::SetArrowPlacement ( int )

virtual

Control whether arrow heads are drawn on the leader.