/usr/include/paraview/vtkMergeGraphs.h is in paraview-dev 5.0.1+dfsg1-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107  | /*=========================================================================
  Program:   Visualization Toolkit
  Module:    vtkMergeGraphs.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.
=========================================================================*/
/*-------------------------------------------------------------------------
  Copyright 2008 Sandia Corporation.
  Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
  the U.S. Government retains certain rights in this software.
-------------------------------------------------------------------------*/
// .NAME vtkMergeGraphs - combines two graphs
//
// .SECTION Description
// vtkMergeGraphs combines information from two graphs into one.
// Both graphs must have pedigree ids assigned to the vertices.
// The output will contain the vertices/edges in the first graph, in
// addition to:
//
//  - vertices in the second graph whose pedigree id does not
//    match a vertex in the first input
//
//  - edges in the second graph
//
// The output will contain the same attribute structure as the input;
// fields associated only with the second input graph will not be passed
// to the output. When possible, the vertex/edge data for new vertices and
// edges will be populated with matching attributes on the second graph.
// To be considered a matching attribute, the array must have the same name,
// type, and number of components.
//
// .SECTION Caveats
// This filter is not "domain-aware". Pedigree ids are assumed to be globally
// unique, regardless of their domain.
#ifndef vtkMergeGraphs_h
#define vtkMergeGraphs_h
#include "vtkInfovisCoreModule.h" // For export macro
#include "vtkGraphAlgorithm.h"
class vtkBitArray;
class vtkMutableGraphHelper;
class vtkStringArray;
class vtkTable;
class VTKINFOVISCORE_EXPORT vtkMergeGraphs : public vtkGraphAlgorithm
{
public:
  static vtkMergeGraphs* New();
  vtkTypeMacro(vtkMergeGraphs,vtkGraphAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent);
  // Description:
  // This is the core functionality of the algorithm. Adds edges
  // and vertices from g2 into g1.
  int ExtendGraph(vtkMutableGraphHelper* g1, vtkGraph* g2);
  // Description:
  // Whether to use an edge window array. The default is to
  // not use a window array.
  vtkSetMacro(UseEdgeWindow, bool);
  vtkGetMacro(UseEdgeWindow, bool);
  vtkBooleanMacro(UseEdgeWindow, bool);
  // Description:
  // The edge window array. The default array name is "time".
  vtkSetStringMacro(EdgeWindowArrayName);
  vtkGetStringMacro(EdgeWindowArrayName);
  // Description:
  // The time window amount. Edges with values lower
  // than the maximum value minus this window will be
  // removed from the graph. The default edge window is
  // 10000.
  vtkSetMacro(EdgeWindow, double);
  vtkGetMacro(EdgeWindow, double);
protected:
  vtkMergeGraphs();
  ~vtkMergeGraphs();
  virtual int RequestData(
    vtkInformation*,
    vtkInformationVector**,
    vtkInformationVector*);
  virtual int FillInputPortInformation(int port, vtkInformation *info);
  bool UseEdgeWindow;
  char* EdgeWindowArrayName;
  double EdgeWindow;
private:
  vtkMergeGraphs(const vtkMergeGraphs&); // Not implemented
  void operator=(const vtkMergeGraphs&);   // Not implemented
};
#endif
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