/usr/include/vtk-5.8/vtkHyperOctreeLimiter.h is in libvtk5-dev 5.8.0-5.
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 | /*=========================================================================
  Program:   Visualization Toolkit
  Module:    vtkHyperOctreeLimiter.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 vtkHyperOctreeLimiter - Limit the tree's depth, averaging data
//  from lower level branches into the new leaves at the cut points.
// .SECTION Description
// This filter returns a lower resolution copy of its input vtkHyperOctree.
// It does a length/area/volume weighted averaging to obtain data at each
// cut point. Above the cut level, leaf attribute data is simply copied.
// .SECTION See Also
// vtkHyperOctree
#ifndef __vtkHyperOctreeLimiter_h
#define __vtkHyperOctreeLimiter_h
#include "vtkDataSetAlgorithm.h"
class vtkHyperOctree;
class vtkHyperOctreeCursor;
class VTK_GRAPHICS_EXPORT vtkHyperOctreeLimiter : public vtkDataSetAlgorithm
{
public:
  static vtkHyperOctreeLimiter *New();
  vtkTypeMacro(vtkHyperOctreeLimiter, vtkDataSetAlgorithm);
  // Description:
  // Return the maximum number of levels of the hyperoctree.
  int GetMaximumLevel();
  
  // Description:
  // Set the maximum number of levels of the hyperoctree.
  void SetMaximumLevel(int levels);
protected:
  vtkHyperOctreeLimiter();
  ~vtkHyperOctreeLimiter();
  virtual int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
  virtual int FillInputPortInformation(int port, vtkInformation *info);
  virtual int FillOutputPortInformation(int port, vtkInformation *info);
  
  vtkHyperOctree *Input;
  vtkHyperOctree *Output;
    
  void BuildNextCell(vtkHyperOctreeCursor *, vtkHyperOctreeCursor *, int);
  void AddInteriorAttributes(vtkHyperOctreeCursor *, int);
  double MeasureCell(int);
  int MaximumLevel;
  double TopSize;
  int Dimension;
  int NumChildren;
  double SizeAtPrunePoint;
  double *AccumScratch;
  int AccumSize;
private:
  vtkHyperOctreeLimiter(const vtkHyperOctreeLimiter&);  // Not implemented.
  void operator=(const vtkHyperOctreeLimiter&);  // Not implemented.
};
#endif
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