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100 lines
3.1 KiB
C
100 lines
3.1 KiB
C
3 weeks ago
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/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkPolyLineWidget.h
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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/**
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* @class vtkPolyLineWidget
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* @brief widget for vtkPolyLineRepresentation.
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*
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* vtkPolyLineWidget is the vtkAbstractWidget subclass for
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* vtkPolyLineRepresentation which manages the interactions with
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* vtkPolyLineRepresentation. This is based on vtkPolyLineWidget.
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*
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* This widget allows the creation of a polyline interactively by adding or removing points
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* based on mouse position and a modifier key.
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*
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* - ctrl+click inserts a new point on the selected line
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* - shift+click deletes the selected point
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* - alt+click adds a new point anywhere depending on last selected point.
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* If the first point is selected, the new point is added at the beginning,
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* else it is added at the end.
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*
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* @sa
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* vtkPolyLineRepresentation, vtkPolyLineWidget
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*/
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#ifndef vtkPolyLineWidget_h
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#define vtkPolyLineWidget_h
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#include "vtkAbstractWidget.h"
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#include "vtkInteractionWidgetsModule.h" // For export macro
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class vtkPolyLineRepresentation;
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class VTKINTERACTIONWIDGETS_EXPORT vtkPolyLineWidget : public vtkAbstractWidget
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{
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public:
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static vtkPolyLineWidget* New();
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vtkTypeMacro(vtkPolyLineWidget, vtkAbstractWidget);
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void PrintSelf(ostream& os, vtkIndent indent) override;
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/**
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* Specify an instance of vtkWidgetRepresentation used to represent this
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* widget in the scene. Note that the representation is a subclass of
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* vtkProp so it can be added to the renderer independent of the widget.
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*/
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void SetRepresentation(vtkPolyLineRepresentation* r)
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{
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this->Superclass::SetWidgetRepresentation(reinterpret_cast<vtkWidgetRepresentation*>(r));
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}
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/**
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* Create the default widget representation if one is not set. By default,
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* this is an instance of the vtkPolyLineRepresentation class.
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*/
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void CreateDefaultRepresentation() override;
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/**
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* Override superclasses' SetEnabled() method because the line
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* widget must enable its internal handle widgets.
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*/
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void SetEnabled(int enabling) override;
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protected:
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vtkPolyLineWidget();
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~vtkPolyLineWidget() override;
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int WidgetState;
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enum _WidgetState
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{
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Start = 0,
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Active
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};
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// These methods handle events
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static void SelectAction(vtkAbstractWidget*);
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static void EndSelectAction(vtkAbstractWidget*);
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static void TranslateAction(vtkAbstractWidget*);
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static void ScaleAction(vtkAbstractWidget*);
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static void MoveAction(vtkAbstractWidget*);
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vtkCallbackCommand* KeyEventCallbackCommand;
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static void ProcessKeyEvents(vtkObject*, unsigned long, void*, void*);
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private:
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vtkPolyLineWidget(const vtkPolyLineWidget&) = delete;
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void operator=(const vtkPolyLineWidget&) = delete;
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};
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#endif
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