/usr/include/paraview/vtkTreeIterator.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  | /*=========================================================================
  Program:   Visualization Toolkit
  Module:    vtkTreeIterator.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 vtkTreeIterator - Abstract class for iterator over a vtkTree.
//
// .SECTION Description
// The base class for tree iterators vtkTreeBFSIterator and vtkTreeDFSIterator.
//
// After setting up the iterator, the normal mode of operation is to
// set up a <code>while(iter->HasNext())</code> loop, with the statement
// <code>vtkIdType vertex = iter->Next()</code> inside the loop.
//
// .SECTION See Also
// vtkTreeBFSIterator vtkTreeDFSIterator
#ifndef vtkTreeIterator_h
#define vtkTreeIterator_h
#include "vtkCommonDataModelModule.h" // For export macro
#include "vtkObject.h"
class vtkTree;
class VTKCOMMONDATAMODEL_EXPORT vtkTreeIterator : public vtkObject
{
public:
  vtkTypeMacro(vtkTreeIterator, vtkObject);
  virtual void PrintSelf(ostream& os, vtkIndent indent);
  // Description:
  // Set/get the graph to iterate over.
  void SetTree(vtkTree* graph);
  vtkGetMacro(Tree, vtkTree*);
  // Description:
  // The start vertex of the traversal.
  // The tree iterator will only iterate over the subtree rooted at vertex.
  // If not set (or set to a negative value), starts at the root of the tree.
  void SetStartVertex(vtkIdType vertex);
  vtkGetMacro(StartVertex, vtkIdType);
  // Description:
  // The next vertex visited in the graph.
  vtkIdType Next();
  // Description:
  // Return true when all vertices have been visited.
  bool HasNext();
  // Description:
  // Reset the iterator to its start vertex.
  void Restart();
protected:
  vtkTreeIterator();
  ~vtkTreeIterator();
  virtual void Initialize() = 0;
  virtual vtkIdType NextInternal() = 0;
  vtkTree* Tree;
  vtkIdType StartVertex;
  vtkIdType NextId;
private:
  vtkTreeIterator(const vtkTreeIterator &);  // Not implemented.
  void operator=(const vtkTreeIterator &);        // Not implemented.
};
#endif
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