#include <vtkDistanceWidget.h>
The vtkDistanceWidget is used to measure the distance between two points. The two end points can be positioned independently, and when they are released, a special PlacePointEvent is invoked so that special operations may be take to reposition the point (snap to grid, etc.) The widget has two different modes of interaction: when initially defined (i.e., placing the two points) and then a manipulate mode (adjusting the position of the two points).
To use this widget, specify an instance of vtkDistanceWidget and a representation (a subclass of vtkDistanceRepresentation). The widget is implemented using two instances of vtkHandleWidget which are used to position the end points of the line. The representations for these two handle widgets are provided by the vtkDistanceRepresentation.
LeftButtonPressEvent - add a point or select a handle MouseMoveEvent - position the second point or move a handle LeftButtonReleaseEvent - release the handle
vtkWidgetEvent::AddPoint -- add one point; depending on the state it may the first or second point added. Or, if near a handle, select the handle. vtkWidgetEvent::Move -- move the second point or handle depending on the state. vtkWidgetEvent::EndSelect -- the handle manipulation process has completed.
vtkCommand::StartInteractionEvent (beginning to interact) vtkCommand::EndInteractionEvent (completing interaction) vtkCommand::InteractionEvent (moving after selecting something) vtkCommand::PlacePointEvent (after point is positioned; call data includes handle id (0,1))
Definition at line 84 of file vtkDistanceWidget.h.
typedef vtkAbstractWidget | Superclass |
static int | IsTypeOf (const char *type) |
static vtkDistanceWidget * | SafeDownCast (vtkObject *o) |
virtual const char * | GetClassName () |
virtual int | IsA (const char *type) |
void | PrintSelf (ostream &os, vtkIndent indent) |
Public Member Functions | |
virtual void | SetEnabled (int) |
void | CreateDefaultRepresentation () |
virtual void | SetProcessEvents (int) |
void | SetRepresentation (vtkDistanceRepresentation *r) |
Static Public Member Functions | |
static vtkDistanceWidget * | New () |
Protected Types | |
enum | { Start = 0, Define, Manipulate } |
Protected Member Functions | |
vtkDistanceWidget () | |
~vtkDistanceWidget () | |
void | StartDistanceInteraction (int handleNum) |
void | DistanceInteraction (int handleNum) |
void | EndDistanceInteraction (int handleNum) |
Static Protected Member Functions | |
static void | AddPointAction (vtkAbstractWidget *) |
static void | MoveAction (vtkAbstractWidget *) |
static void | EndSelectAction (vtkAbstractWidget *) |
Protected Attributes | |
int | WidgetState |
int | CurrentHandle |
vtkHandleWidget * | Point1Widget |
vtkHandleWidget * | Point2Widget |
vtkDistanceWidgetCallback * | DistanceWidgetCallback1 |
vtkDistanceWidgetCallback * | DistanceWidgetCallback2 |
Friends | |
class | vtkDistanceWidgetCallback |
Standard methods for a VTK class.
Reimplemented from vtkAbstractWidget.
Definition at line 92 of file vtkDistanceWidget.h.
anonymous enum [protected] |
vtkDistanceWidget::vtkDistanceWidget | ( | ) | [protected] |
vtkDistanceWidget::~vtkDistanceWidget | ( | ) | [protected] |
static vtkDistanceWidget* vtkDistanceWidget::New | ( | ) | [static] |
Instantiate this class.
Reimplemented from vtkObject.
virtual const char* vtkDistanceWidget::GetClassName | ( | ) | [virtual] |
Standard methods for a VTK class.
Reimplemented from vtkAbstractWidget.
static int vtkDistanceWidget::IsTypeOf | ( | const char * | type | ) | [static] |
Standard methods for a VTK class.
Reimplemented from vtkAbstractWidget.
virtual int vtkDistanceWidget::IsA | ( | const char * | type | ) | [virtual] |
Standard methods for a VTK class.
Reimplemented from vtkAbstractWidget.
static vtkDistanceWidget* vtkDistanceWidget::SafeDownCast | ( | vtkObject * | o | ) | [static] |
Standard methods for a VTK class.
Reimplemented from vtkAbstractWidget.
void vtkDistanceWidget::PrintSelf | ( | ostream & | os, | |
vtkIndent | indent | |||
) | [virtual] |
Standard methods for a VTK class.
Reimplemented from vtkAbstractWidget.
virtual void vtkDistanceWidget::SetEnabled | ( | int | ) | [virtual] |
The method for activiating and deactiviating this widget. This method must be overridden because it is a composite widget and does more than its superclasses' vtkAbstractWidget::SetEnabled() method.
Reimplemented from vtkAbstractWidget.
void vtkDistanceWidget::SetRepresentation | ( | vtkDistanceRepresentation * | 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 105 of file vtkDistanceWidget.h.
void vtkDistanceWidget::CreateDefaultRepresentation | ( | ) | [virtual] |
Create the default widget representation if one is not set.
Implements vtkAbstractWidget.
virtual void vtkDistanceWidget::SetProcessEvents | ( | int | ) | [virtual] |
Methods to change the whether the widget responds to interaction. Overridden to pass the state to component widgets.
Reimplemented from vtkAbstractWidget.
static void vtkDistanceWidget::AddPointAction | ( | vtkAbstractWidget * | ) | [static, protected] |
static void vtkDistanceWidget::MoveAction | ( | vtkAbstractWidget * | ) | [static, protected] |
static void vtkDistanceWidget::EndSelectAction | ( | vtkAbstractWidget * | ) | [static, protected] |
void vtkDistanceWidget::StartDistanceInteraction | ( | int | handleNum | ) | [protected] |
void vtkDistanceWidget::DistanceInteraction | ( | int | handleNum | ) | [protected] |
void vtkDistanceWidget::EndDistanceInteraction | ( | int | handleNum | ) | [protected] |
friend class vtkDistanceWidgetCallback [friend] |
Definition at line 147 of file vtkDistanceWidget.h.
int vtkDistanceWidget::WidgetState [protected] |
Definition at line 125 of file vtkDistanceWidget.h.
int vtkDistanceWidget::CurrentHandle [protected] |
Definition at line 126 of file vtkDistanceWidget.h.
vtkHandleWidget* vtkDistanceWidget::Point1Widget [protected] |
Definition at line 135 of file vtkDistanceWidget.h.
vtkHandleWidget* vtkDistanceWidget::Point2Widget [protected] |
Definition at line 136 of file vtkDistanceWidget.h.
vtkDistanceWidgetCallback* vtkDistanceWidget::DistanceWidgetCallback1 [protected] |
Definition at line 137 of file vtkDistanceWidget.h.
vtkDistanceWidgetCallback* vtkDistanceWidget::DistanceWidgetCallback2 [protected] |
Definition at line 138 of file vtkDistanceWidget.h.