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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-FileCopyrightText: Copyright 2008 Sandia Corporation
// SPDX-License-Identifier: LicenseRef-BSD-3-Clause-Sandia-USGov
/**
* @class vtkDirectedGraphAlgorithm
* @brief Superclass for algorithms that produce only directed graph as output
*
*
* vtkDirectedGraphAlgorithm is a convenience class to make writing algorithms
* easier. It is also designed to help transition old algorithms to the new
* pipeline edgehitecture. 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 Graph. If that
* isn't the case then please override this method in your subclass.
* You should implement the subclass's algorithm into
* RequestData( request, inputVec, outputVec).
*
*
* @par Thanks:
* Thanks to Patricia Crossno, Ken Moreland, Andrew Wilson and Brian Wylie from
* Sandia National Laboratories for their help in developing this class.
*/
#ifndef vtkDirectedGraphAlgorithm_h
#define vtkDirectedGraphAlgorithm_h
#include "vtkAlgorithm.h"
#include "vtkCommonExecutionModelModule.h" // For export macro
#include "vtkDirectedGraph.h" // makes things a bit easier
VTK_ABI_NAMESPACE_BEGIN
class vtkDataSet;
class VTKCOMMONEXECUTIONMODEL_EXPORT vtkDirectedGraphAlgorithm : public vtkAlgorithm
{
public:
static vtkDirectedGraphAlgorithm* New();
vtkTypeMacro(vtkDirectedGraphAlgorithm, vtkAlgorithm);
void PrintSelf(ostream& os, vtkIndent indent) override;
/**
* see vtkAlgorithm for details
*/
vtkTypeBool ProcessRequest(
vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
/**
* Get the output data object for a port on this algorithm.
*/
vtkDirectedGraph* GetOutput() { return this->GetOutput(0); }
vtkDirectedGraph* GetOutput(int index);
/**
* 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* obj) { this->SetInputData(0, obj); }
void SetInputData(int index, vtkDataObject* obj);
protected:
vtkDirectedGraphAlgorithm();
~vtkDirectedGraphAlgorithm() override;
// 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*);
virtual int RequestUpdateTime(vtkInformation*, vtkInformationVector**, vtkInformationVector*);
// see algorithm for more info
int FillOutputPortInformation(int port, vtkInformation* info) override;
int FillInputPortInformation(int port, vtkInformation* info) override;
private:
vtkDirectedGraphAlgorithm(const vtkDirectedGraphAlgorithm&) = delete;
void operator=(const vtkDirectedGraphAlgorithm&) = delete;
};
VTK_ABI_NAMESPACE_END
#endif
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