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/*=========================================================================
Program: Visualization Toolkit
Module: vtkPolyDataSourceWidget.h
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
// .NAME vtkPolyDataSourceWidget - abstract PolyDataSource-based 3D widget
// .SECTION Description
// This abstract class serves as parent to 3D widgets that have simple
// vtkPolyDataSource instances defining their geometry.
//
// In addition to what is offered by the vtk3DWidget parent, this class
// makes it possible to manipulate the underlying polydatasource and to
// PlaceWidget() according to that, instead of having to make use of
// SetInput() or SetProp3D().
//
// Implementors of child classes HAVE to implement their PlaceWidget(bounds)
// to check for the existence of Input and Prop3D FIRST. If these don't
// exist, place according to the underlying PolyDataSource. Child classes
// also have to imprement UpdatePlacement(), which updates the widget according
// to the geometry of the underlying PolyDataSource.
// .SECTION See Also
// vtk3DWidget vtkLineWidget vtkPlaneWidget vtkSphereWidget
#ifndef __vtkPolyDataSourceWidget_h
#define __vtkPolyDataSourceWidget_h
#include "vtk3DWidget.h"
class vtkPolyDataAlgorithm;
class vtkPolyDataSource;
class VTK_WIDGETS_EXPORT vtkPolyDataSourceWidget : public vtk3DWidget
{
public:
vtkTypeMacro(vtkPolyDataSourceWidget, vtk3DWidget);
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Overrides vtk3DWidget PlaceWidget() so that it doesn't complain if
// there's no Input and no Prop3D.
virtual void PlaceWidget();
// Description:
// We have to redeclare this abstract, PlaceWidget() requires it. You HAVE
// to override this in your concrete child classes. If there's no Prop3D
// and no Input, your PlaceWidget must make use of the underlying
// PolyDataSource to do its work.
virtual void PlaceWidget(double bounds[6]) = 0;
// Description:
// Convenience method brought over from vtkPlaneWidget.
void PlaceWidget(double xmin, double xmax, double ymin, double ymax,
double zmin, double zmax)
{this->Superclass::PlaceWidget(xmin,xmax,ymin,ymax,zmin,zmax);}
// Description:
// Returns underlying vtkPolyDataSource that determines geometry. This
// can be modified after which PlaceWidget() or UpdatePlacement() can be
// called. UpdatePlacement() will always update the planewidget according
// to the geometry of the underlying PolyDataSource. PlaceWidget() will
// only make use of this geometry if there is no Input and no Prop3D set.
virtual vtkPolyDataSource* GetPolyDataSource();
virtual vtkPolyDataAlgorithm* GetPolyDataAlgorithm() = 0;
// Description:
// If you've made changes to the underlying vtkPolyDataSource AFTER your
// initial call to PlaceWidget(), use this method to realise the changes
// in the widget.
virtual void UpdatePlacement() = 0;
protected:
// Description:
// Empty constructor that calls the parent constructor. Child classes
// should call this constructor as part of their initialisation.
vtkPolyDataSourceWidget();
private:
// this copy constructor and assignment operator are deliberately not
// implemented so that any "accidental" invocation of a copy (pass by value)
// or assignment will trigger linker errors; the class is not meant to
// be used in these ways. I couldn't resist adding this explanation. :)
vtkPolyDataSourceWidget(const vtkPolyDataSourceWidget&); // Not implemented.
void operator=(const vtkPolyDataSourceWidget&); // Not implemented.
};
#endif
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