/usr/include/paraview/vtkExtractVectorComponents.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  | /*=========================================================================
  Program:   Visualization Toolkit
  Module:    vtkExtractVectorComponents.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 vtkExtractVectorComponents - extract components of vector as separate scalars
// .SECTION Description
// vtkExtractVectorComponents is a filter that extracts vector components as
// separate scalars. This is accomplished by creating three different outputs.
// Each output is the same as the input, except that the scalar values will be
// one of the three components of the vector. These can be found in the
// VxComponent, VyComponent, and VzComponent.
// Alternatively, if the ExtractToFieldData flag is set, the filter will
// put all the components in the field data. The first component will be
// the scalar and the others will be non-attribute arrays.
// .SECTION Caveats
// This filter is unusual in that it creates multiple outputs.
// If you use the GetOutput() method, you will be retrieving the x vector
// component.
#ifndef vtkExtractVectorComponents_h
#define vtkExtractVectorComponents_h
#include "vtkFiltersExtractionModule.h" // For export macro
#include "vtkDataSetAlgorithm.h"
class vtkDataSet;
class VTKFILTERSEXTRACTION_EXPORT vtkExtractVectorComponents : public vtkDataSetAlgorithm
{
public:
  static vtkExtractVectorComponents *New();
  vtkTypeMacro(vtkExtractVectorComponents,vtkDataSetAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent);
  // Description:
  // Specify the input data or filter.
  virtual void SetInputData(vtkDataSet *input);
  // Description:
  // Get the output dataset representing velocity x-component. If output is
  // NULL then input hasn't been set, which is necessary for abstract
  // objects. (Note: this method returns the same information as the
  // GetOutput() method with an index of 0.)
  vtkDataSet *GetVxComponent();
  // Description:
  // Get the output dataset representing velocity y-component. If output is
  // NULL then input hasn't been set, which is necessary for abstract
  // objects. (Note: this method returns the same information as the
  // GetOutput() method with an index of 1.)
  // Note that if ExtractToFieldData is true, this output will be empty.
  vtkDataSet *GetVyComponent();
  // Description:
  // Get the output dataset representing velocity z-component. If output is
  // NULL then input hasn't been set, which is necessary for abstract
  // objects. (Note: this method returns the same information as the
  // GetOutput() method with an index of 2.)
  // Note that if ExtractToFieldData is true, this output will be empty.
  vtkDataSet *GetVzComponent();
  // Description:
  // Determines whether the vector components will be put
  // in separate outputs or in the first output's field data
  vtkSetMacro(ExtractToFieldData, int);
  vtkGetMacro(ExtractToFieldData, int);
  vtkBooleanMacro(ExtractToFieldData, int);
protected:
  vtkExtractVectorComponents();
  ~vtkExtractVectorComponents();
  virtual int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
  int ExtractToFieldData;
  int OutputsInitialized;
private:
  vtkExtractVectorComponents(const vtkExtractVectorComponents&);  // Not implemented.
  void operator=(const vtkExtractVectorComponents&);  // Not implemented.
};
#endif
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