/usr/include/paraview/vtkPVKeyFrame.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  | /*=========================================================================
  Program:   ParaView
  Module:    vtkPVKeyFrame.h
  Copyright (c) Kitware, Inc.
  All rights reserved.
  See Copyright.txt or http://www.paraview.org/HTML/Copyright.html 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 vtkPVKeyFrame
// .SECTION Description
// Base class for key frames.
// A key frame is responsible to interpolate the curve
// between it self and a consequent key frame. A new subclass is
// needed for each type of interpolation available between two
// key frames. This class can be instantiated to create a no-action key
// frame.
#ifndef vtkPVKeyFrame_h
#define vtkPVKeyFrame_h
#include "vtkObject.h"
#include "vtkPVAnimationModule.h" // needed for export macro
class vtkPVKeyFrameInternals;
class vtkPVAnimationCue;
struct vtkClientServerID;
class VTKPVANIMATION_EXPORT vtkPVKeyFrame : public vtkObject
{
public:
  vtkTypeMacro(vtkPVKeyFrame, vtkObject);
  void PrintSelf(ostream& os, vtkIndent indent);
  static vtkPVKeyFrame* New();
  // Description:;
  // Key time is the time at which this key frame is
  // associated. KeyTime ranges from [0,1], where 0 is the
  // start time of the cue for which this is a key frame and
  // 1 is that cue's end time.
  vtkSetMacro(KeyTime, double);
  vtkGetMacro(KeyTime, double);
  // Description:
  // Get/Set the animated value at this key frame.
  // Note that is the number of values is adjusted to fit the index
  // specified in SetKeyValue.
  virtual void SetKeyValue(double val) { this->SetKeyValue(0, val); }
  virtual void SetKeyValue(unsigned int index, double val);
  double GetKeyValue() { return this->GetKeyValue(0); }
  double GetKeyValue(unsigned int index);
  // Description:
  // Removes all key values.
  virtual void RemoveAllKeyValues();
  // Description:
  // Set/Get the number of key values this key frame currently stores.
  unsigned int GetNumberOfKeyValues();
  virtual void SetNumberOfKeyValues(unsigned int num);
  // Description:
  // This method will do the actual interpolation.
  // currenttime is normalized to the time range between
  // this key frame and the next key frame.
  virtual void UpdateValue(double currenttime,
    vtkPVAnimationCue* cue, vtkPVKeyFrame* next);
protected:
  vtkPVKeyFrame();
  ~vtkPVKeyFrame();
  double KeyTime;
  vtkPVKeyFrameInternals* Internals;
private:
  vtkPVKeyFrame(const vtkPVKeyFrame&); // Not implemented.
  void operator=(const vtkPVKeyFrame&); // Not implemented.
};
#endif
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