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107 lines
3.8 KiB
C
107 lines
3.8 KiB
C
3 weeks ago
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/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkPolyDataSourceWidget.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 vtkPolyDataSourceWidget
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* @brief abstract PolyDataSource-based 3D widget
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*
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* This abstract class serves as parent to 3D widgets that have simple
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* vtkPolyDataSource instances defining their geometry.
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*
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* In addition to what is offered by the vtk3DWidget parent, this class
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* makes it possible to manipulate the underlying polydatasource and to
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* PlaceWidget() according to that, instead of having to make use of
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* SetInput() or SetProp3D().
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*
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* Implementors of child classes HAVE to implement their PlaceWidget(bounds)
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* to check for the existence of Input and Prop3D FIRST. If these don't
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* exist, place according to the underlying PolyDataSource. Child classes
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* also have to imprement UpdatePlacement(), which updates the widget according
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* to the geometry of the underlying PolyDataSource.
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*
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* @sa
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* vtk3DWidget vtkLineWidget vtkPlaneWidget vtkSphereWidget
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*/
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#ifndef vtkPolyDataSourceWidget_h
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#define vtkPolyDataSourceWidget_h
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#include "vtk3DWidget.h"
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#include "vtkInteractionWidgetsModule.h" // For export macro
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class vtkPolyDataAlgorithm;
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class VTKINTERACTIONWIDGETS_EXPORT vtkPolyDataSourceWidget : public vtk3DWidget
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{
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public:
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vtkTypeMacro(vtkPolyDataSourceWidget, vtk3DWidget);
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void PrintSelf(ostream& os, vtkIndent indent) override;
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/**
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* Overrides vtk3DWidget PlaceWidget() so that it doesn't complain if
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* there's no Input and no Prop3D.
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*/
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void PlaceWidget() override;
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/**
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* We have to redeclare this abstract, PlaceWidget() requires it. You HAVE
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* to override this in your concrete child classes. If there's no Prop3D
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* and no Input, your PlaceWidget must make use of the underlying
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* PolyDataSource to do its work.
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*/
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void PlaceWidget(double bounds[6]) override = 0;
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/**
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* Convenience method brought over from vtkPlaneWidget.
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*/
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void PlaceWidget(
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double xmin, double xmax, double ymin, double ymax, double zmin, double zmax) override
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{
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this->Superclass::PlaceWidget(xmin, xmax, ymin, ymax, zmin, zmax);
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}
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/**
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* Returns underlying vtkPolyDataAlgorithm that determines geometry. This
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* can be modified after which PlaceWidget() or UpdatePlacement() can be
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* called. UpdatePlacement() will always update the planewidget according
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* to the geometry of the underlying PolyDataAlgorithm. PlaceWidget() will
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* only make use of this geometry if there is no Input and no Prop3D set.
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*/
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virtual vtkPolyDataAlgorithm* GetPolyDataAlgorithm() = 0;
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/**
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* If you've made changes to the underlying vtkPolyDataSource AFTER your
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* initial call to PlaceWidget(), use this method to realise the changes
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* in the widget.
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*/
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virtual void UpdatePlacement() = 0;
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protected:
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/**
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* Empty constructor that calls the parent constructor. Child classes
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* should call this constructor as part of their initialisation.
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*/
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vtkPolyDataSourceWidget();
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private:
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// this copy constructor and assignment operator are deliberately not
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// implemented so that any "accidental" invocation of a copy (pass by value)
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// or assignment will trigger linker errors; the class is not meant to
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// be used in these ways. I couldn't resist adding this explanation. :)
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vtkPolyDataSourceWidget(const vtkPolyDataSourceWidget&) = delete;
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void operator=(const vtkPolyDataSourceWidget&) = delete;
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};
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#endif
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