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/*=========================================================================
Program: Visualization Toolkit
Module: vtkLabelHierarchyAlgorithm.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.
=========================================================================*/
/**
* @class vtkLabelHierarchyAlgorithm
* @brief Superclass for algorithms that produce only label hierarchies as output
*
*
* vtkLabelHierarchyAlgorithm is a convenience class to make writing algorithms
* easier. It is also designed to help transition old algorithms to the new
* pipeline architecture. There are some assumptions and defaults made by this
* class you should be aware of. This class defaults such that your filter
* will have one input port and one output port. If that is not the case
* simply change it with SetNumberOfInputPorts etc. See this class
* constructor for the default. This class also provides a FillInputPortInfo
* method that by default says that all inputs will be DataObjects. If that
* isn't the case then please override this method in your subclass. This
* class breaks out the downstream requests into separate functions such as
* RequestData and RequestInformation. You should
* implement RequestData( request, inputVec, outputVec) in subclasses.
*/
#ifndef vtkLabelHierarchyAlgorithm_h
#define vtkLabelHierarchyAlgorithm_h
#include "vtkAlgorithm.h"
#include "vtkRenderingLabelModule.h" // For export macro
VTK_ABI_NAMESPACE_BEGIN
class vtkDataSet;
class vtkLabelHierarchy;
class VTKRENDERINGLABEL_EXPORT vtkLabelHierarchyAlgorithm : public vtkAlgorithm
{
public:
static vtkLabelHierarchyAlgorithm* New();
vtkTypeMacro(vtkLabelHierarchyAlgorithm, vtkAlgorithm);
void PrintSelf(ostream& os, vtkIndent indent) override;
///@{
/**
* Get the output data object for a port on this algorithm.
*/
vtkLabelHierarchy* GetOutput();
vtkLabelHierarchy* GetOutput(int);
virtual void SetOutput(vtkDataObject* d);
///@}
/**
* see vtkAlgorithm for details
*/
vtkTypeBool ProcessRequest(
vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
// this method is not recommended for use, but lots of old style filters use it
vtkDataObject* GetInput();
vtkDataObject* GetInput(int port);
vtkLabelHierarchy* GetLabelHierarchyInput(int port);
///@{
/**
* Assign a data object as input. Note that this method does not
* establish a pipeline connection. Use SetInputConnection() to
* setup a pipeline connection.
*/
void SetInputData(vtkDataObject*);
void SetInputData(int, vtkDataObject*);
///@}
///@{
/**
* Assign a data object as input. Note that this method does not
* establish a pipeline connection. Use AddInputConnection() to
* setup a pipeline connection.
*/
void AddInputData(vtkDataObject*);
void AddInputData(int, vtkDataObject*);
///@}
protected:
vtkLabelHierarchyAlgorithm();
~vtkLabelHierarchyAlgorithm() override;
/**
* This is called by the superclass.
* This is the method you should override.
*/
virtual int RequestDataObject(vtkInformation* request, vtkInformationVector** inputVector,
vtkInformationVector* outputVector);
// convenience method
virtual int RequestInformation(vtkInformation* request, vtkInformationVector** inputVector,
vtkInformationVector* outputVector);
/**
* This is called by the superclass.
* This is the method you should override.
*/
virtual int RequestData(vtkInformation* request, vtkInformationVector** inputVector,
vtkInformationVector* outputVector);
/**
* This is called by the superclass.
* This is the method you should override.
*/
virtual int RequestUpdateExtent(vtkInformation*, vtkInformationVector**, vtkInformationVector*);
// see algorithm for more info
int FillOutputPortInformation(int port, vtkInformation* info) override;
int FillInputPortInformation(int port, vtkInformation* info) override;
private:
vtkLabelHierarchyAlgorithm(const vtkLabelHierarchyAlgorithm&) = delete;
void operator=(const vtkLabelHierarchyAlgorithm&) = delete;
};
VTK_ABI_NAMESPACE_END
#endif
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