/usr/include/vtk-6.1/vtkImageConnector.h is in libvtk6-dev 6.1.0+dfsg2-6.
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 | /*=========================================================================
  Program:   Visualization Toolkit
  Module:    vtkImageConnector.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 vtkImageConnector - Create a binary image of a sphere.
// .SECTION Description
// vtkImageConnector is a helper class for connectivity filters.
// It is not meant to be used directly.
// It implements a stack and breadth first search necessary for
// some connectivity filters.  Filtered axes sets the dimensionality
// of the neighbor comparison, and
// cannot be more than three dimensions.
// As implemented, only voxels which share faces are considered
// neighbors.
#ifndef __vtkImageConnector_h
#define __vtkImageConnector_h
#include "vtkImagingMorphologicalModule.h" // For export macro
#include "vtkObject.h"
class vtkImageData;
//
// Special classes for manipulating data
//
//BTX - begin tcl exclude
//
// For the breadth first search
class vtkImageConnectorSeed { //;prevent man page generation
public:
  static vtkImageConnectorSeed *New() { return new vtkImageConnectorSeed;}
  void *Pointer;
  int  Index[3];
  vtkImageConnectorSeed *Next;
};
//ETX - end tcl exclude
//
class VTKIMAGINGMORPHOLOGICAL_EXPORT vtkImageConnector : public vtkObject
{
public:
  static vtkImageConnector *New();
  vtkTypeMacro(vtkImageConnector,vtkObject);
  void PrintSelf(ostream& os, vtkIndent indent);
  //BTX
  vtkImageConnectorSeed *NewSeed(int index[3], void *ptr);
  void AddSeed(vtkImageConnectorSeed *seed);
  void AddSeedToEnd(vtkImageConnectorSeed *seed);
  //ETX
  void RemoveAllSeeds();
  // Description:
  // Values used by the MarkRegion method
  vtkSetMacro(ConnectedValue, unsigned char);
  vtkGetMacro(ConnectedValue, unsigned char);
  vtkSetMacro(UnconnectedValue, unsigned char);
  vtkGetMacro(UnconnectedValue, unsigned char);
  // Description:
  // Input a data of 0's and "UnconnectedValue"s. Seeds of this object are
  // used to find connected pixels.  All pixels connected to seeds are set to
  // ConnectedValue.  The data has to be unsigned char.
  void MarkData(vtkImageData *data, int dimensionality, int ext[6]);
protected:
  vtkImageConnector();
  ~vtkImageConnector();
  unsigned char ConnectedValue;
  unsigned char UnconnectedValue;
  vtkImageConnectorSeed *PopSeed();
  vtkImageConnectorSeed *Seeds;
  vtkImageConnectorSeed *LastSeed;
private:
  vtkImageConnector(const vtkImageConnector&);  // Not implemented.
  void operator=(const vtkImageConnector&);  // Not implemented.
};
#endif
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