vtkAffineWidget Class Reference

perform affine transformations More...

#include <vtkAffineWidget.h>

Inheritance diagram for vtkAffineWidget:

Collaboration diagram for vtkAffineWidget:

List of all members.

Public Member Functions
void	CreateDefaultRepresentation ()
virtual void	SetEnabled (int)
void	SetRepresentation (vtkAffineRepresentation *r)
vtkAffineRepresentation *	GetAffineRepresentation ()
Static Public Member Functions
static vtkAffineWidget *	New ()
Protected Types
enum	_WidgetState { Start = 0, Active }
Protected Member Functions
	vtkAffineWidget ()
	~vtkAffineWidget ()
void	SetCursor (int state)
Static Protected Member Functions
static void	SelectAction (vtkAbstractWidget *)
static void	EndSelectAction (vtkAbstractWidget *)
static void	MoveAction (vtkAbstractWidget *)
static void	ModifyEventAction (vtkAbstractWidget *)
Protected Attributes
int	WidgetState
int	ModifierActive
typedef vtkAbstractWidget	Superclass
static int	IsTypeOf (const char *type)
static vtkAffineWidget *	SafeDownCast (vtkObjectBase *o)
virtual int	IsA (const char *type)
vtkAffineWidget *	NewInstance () const
void	PrintSelf (ostream &os, vtkIndent indent)
virtual vtkObjectBase *	NewInstanceInternal () const

---

Detailed Description

perform affine transformations

The vtkAffineWidget is used to perform affine transformations on objects. (Affine transformations are transformations that keep parallel lines parallel. Affine transformations include translation, scaling, rotation, and shearing.)

To use this widget, set the widget representation. The representation maintains a transformation matrix and other instance variables consistent with the transformations applied by this widget.

Event Bindings:

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

   LeftButtonPressEvent - select widget: depending on which part is selected
                          translation, rotation, scaling, or shearing may follow.
   LeftButtonReleaseEvent - end selection of widget.
   MouseMoveEvent - interactive movement across 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 vtkAffineWidget's widget events:

   vtkWidgetEvent::Select -- focal point is being selected
   vtkWidgetEvent::EndSelect -- the selection process has completed
   vtkWidgetEvent::Move -- a request for widget motion
 

Event Bindings:

In turn, when these widget events are processed, the vtkAffineWidget 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)
 

Events:

vtkCommand::EndInteractionEvent vtkCommand::InteractionEvent vtkCommand::StartInteractionEvent

Examples:

vtkAffineWidget (Examples)

Tests:

vtkAffineWidget (Tests)

Definition at line 75 of file vtkAffineWidget.h.

---

Member Typedef Documentation

typedef vtkAbstractWidget vtkAffineWidget::Superclass

Standard VTK class macros.

Reimplemented from vtkAbstractWidget.

Definition at line 83 of file vtkAffineWidget.h.

---

Member Enumeration Documentation

enum vtkAffineWidget::_WidgetState [protected]

Enumerator:

Start
Active

Definition at line 124 of file vtkAffineWidget.h.

---

Constructor & Destructor Documentation

vtkAffineWidget::vtkAffineWidget

(

)

[protected]

vtkAffineWidget::~vtkAffineWidget

(

)

[protected]

---

Member Function Documentation

static vtkAffineWidget* vtkAffineWidget::New

(

)

[static]

Instantiate this class.

Reimplemented from vtkObject.

static int vtkAffineWidget::IsTypeOf

(

const char *

type

)

[static]

Standard VTK class macros.

Reimplemented from vtkAbstractWidget.

virtual int vtkAffineWidget::IsA

(

const char *

type

)

[virtual]

Standard VTK class macros.

Reimplemented from vtkAbstractWidget.

static vtkAffineWidget* vtkAffineWidget::SafeDownCast

(

vtkObjectBase *

o

)

[static]

Standard VTK class macros.

Reimplemented from vtkAbstractWidget.

virtual vtkObjectBase* vtkAffineWidget::NewInstanceInternal

(

)

const [protected, virtual]

Standard VTK class macros.

Reimplemented from vtkAbstractWidget.

vtkAffineWidget* vtkAffineWidget::NewInstance

(

)

const

Standard VTK class macros.

Reimplemented from vtkAbstractWidget.

void vtkAffineWidget::PrintSelf	(	ostream &	os,
		vtkIndent	indent
	)		[virtual]

Standard VTK class macros.

Reimplemented from vtkAbstractWidget.

void vtkAffineWidget::SetRepresentation

(

vtkAffineRepresentation *

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 91 of file vtkAffineWidget.h.

vtkAffineRepresentation* vtkAffineWidget::GetAffineRepresentation

(

)

[inline]

Return the representation as a vtkAffineRepresentation.

Definition at line 97 of file vtkAffineWidget.h.

void vtkAffineWidget::CreateDefaultRepresentation

(

)

[virtual]

Create the default widget representation if one is not set.

Implements vtkAbstractWidget.

virtual void vtkAffineWidget::SetEnabled

(

int

)

[virtual]

Methods for activating this widget. This implementation extends the superclasses' in order to resize the widget handles due to a render start event.

Reimplemented from vtkAbstractWidget.

static void vtkAffineWidget::SelectAction

(

vtkAbstractWidget *

)

[static, protected]

static void vtkAffineWidget::EndSelectAction

(

vtkAbstractWidget *

)

[static, protected]

static void vtkAffineWidget::MoveAction

(

vtkAbstractWidget *

)

[static, protected]

static void vtkAffineWidget::ModifyEventAction

(

vtkAbstractWidget *

)

[static, protected]

void vtkAffineWidget::SetCursor

(

int

state

)

[protected]

---

Member Data Documentation

int vtkAffineWidget::WidgetState [protected]

Definition at line 123 of file vtkAffineWidget.h.

int vtkAffineWidget::ModifierActive [protected]

Definition at line 132 of file vtkAffineWidget.h.

---

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

• dox/Interaction/Widgets/vtkAffineWidget.h