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94 lines
2.9 KiB
C++
94 lines
2.9 KiB
C++
/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkLightWidget.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 vtkLightWidget
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* @brief 3D widget for showing a LightRepresentation
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*
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* To use this widget, one generally pairs it with a
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* vtkLightRepresentation. Various options are available in the representation
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* for controlling how the widget appears, and how it functions.
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*
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* @par Event Bindings:
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* By default, the widget responds to the following VTK events (i.e., it
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* watches the vtkRenderWindowInteractor for these events):
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* <pre>
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* Select and move the sphere to change the light position.
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* Select and move the cone or the line to change the focal point.
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* Right-Click and scale on the cone to change the cone angle.
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* </pre>
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*
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* @warning
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* Note that the widget can be picked even when it is "behind"
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* other actors. This is an intended feature and not a bug.
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*
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* @warning
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* This class, and vtkLightRepresentation, are second generation VTK widgets.
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*
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* @sa
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* vtkLightRepresentation vtkSphereWidget
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*/
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#ifndef vtkLightWidget_h
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#define vtkLightWidget_h
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#include "vtkAbstractWidget.h"
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#include "vtkInteractionWidgetsModule.h" // For export macro
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class vtkHandleWidget;
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class vtkLightRepresentation;
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class VTKINTERACTIONWIDGETS_EXPORT vtkLightWidget : public vtkAbstractWidget
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{
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public:
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static vtkLightWidget* New();
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vtkTypeMacro(vtkLightWidget, 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 vtkProp
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* so it can be added to the renderer independent of the widget.
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*/
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void SetRepresentation(vtkLightRepresentation* r);
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/**
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* Return the representation as a vtkLightRepresentation.
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*/
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vtkLightRepresentation* GetLightRepresentation();
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/**
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* Create the default widget representation if one is not set.
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*/
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void CreateDefaultRepresentation() override;
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protected:
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vtkLightWidget();
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~vtkLightWidget() override = default;
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bool WidgetActive = false;
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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 MoveAction(vtkAbstractWidget*);
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static void ScaleAction(vtkAbstractWidget*);
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private:
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vtkLightWidget(const vtkLightWidget&) = delete;
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void operator=(const vtkLightWidget&) = delete;
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};
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#endif
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