vtkTreeDifferenceFilter.h

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/*=========================================================================

  Program:   Visualization Toolkit
  Module:    vtkTreeDifferenceFilter.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.

=========================================================================*/

#ifndef vtkTreeDifferenceFilter_h
#define vtkTreeDifferenceFilter_h

#include "vtkInfovisCoreModule.h" // For export macro
#include "vtkGraphAlgorithm.h"

#include "vtkSmartPointer.h"      // For ivars
#include <vector>                 // For ivars

class vtkDoubleArray;
class vtkTree;

class VTKINFOVISCORE_EXPORT vtkTreeDifferenceFilter : public vtkGraphAlgorithm
{
public:
  static vtkTreeDifferenceFilter* New();
  vtkTypeMacro(vtkTreeDifferenceFilter,vtkGraphAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent) override;


  vtkSetStringMacro(IdArrayName);
  vtkGetStringMacro(IdArrayName);


  vtkSetStringMacro(ComparisonArrayName);
  vtkGetStringMacro(ComparisonArrayName);


  vtkSetStringMacro(OutputArrayName);
  vtkGetStringMacro(OutputArrayName);


  vtkSetMacro(ComparisonArrayIsVertexData, bool);
  vtkGetMacro(ComparisonArrayIsVertexData, bool);

protected:
  vtkTreeDifferenceFilter();
  ~vtkTreeDifferenceFilter() override;

  int RequestData(
    vtkInformation*,
    vtkInformationVector**,
    vtkInformationVector*) override;

  int FillInputPortInformation(int port, vtkInformation *info) override;

  bool GenerateMapping(vtkTree *tree1, vtkTree *tree2);

  vtkSmartPointer<vtkDoubleArray> ComputeDifference(vtkTree *tree1,
                                                    vtkTree *tree2);

  char* IdArrayName;
  char* ComparisonArrayName;
  char* OutputArrayName;
  bool ComparisonArrayIsVertexData;

  std::vector< vtkIdType > VertexMap;
  std::vector< vtkIdType > EdgeMap;

private:
  vtkTreeDifferenceFilter(const vtkTreeDifferenceFilter&) = delete;
  void operator=(const vtkTreeDifferenceFilter&) = delete;
};

#endif