/usr/include/paraview/vtkPVHardwareSelector.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 93 94 95 96 97 98 99 100 101  | /*=========================================================================
  Program:   ParaView
  Module:    vtkPVHardwareSelector.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 vtkPVHardwareSelector - vtkHardwareSelector subclass with paraview
// sepecific logic to avoid recapturing buffers unless needed.
// .SECTION Description
// vtkHardwareSelector is subclass of vtkHardwareSelector that adds logic to
// reuse the captured buffers as much as possible. Thus avoiding repeated
// selection-rendering of repeated selections or picking.
// This class does not know, however, when the cached buffers are invalid.
// External logic must explicitly calls InvalidateCachedSelection() to ensure
// that the cache is not reused.
#ifndef vtkPVHardwareSelector_h
#define vtkPVHardwareSelector_h
#include "vtkOpenGLHardwareSelector.h"
#include "vtkPVClientServerCoreRenderingModule.h" //needed for exports
#include "vtkWeakPointer.h" // needed for vtkWeakPointer.
class vtkPVSynchronizedRenderWindows;
class VTKPVCLIENTSERVERCORERENDERING_EXPORT vtkPVHardwareSelector : public vtkOpenGLHardwareSelector
{
public:
  static vtkPVHardwareSelector* New();
  vtkTypeMacro(vtkPVHardwareSelector, vtkOpenGLHardwareSelector);
  void PrintSelf(ostream& os, vtkIndent indent);
  // Description:
  // Overridden to avoid clearing of captured buffers.
  vtkSelection* Select(int region[4]);
  // Description:
  // Same as Select() above, except this one use a polygon, instead
  // of a rectangle region, and select elements inside the polygon
  vtkSelection* PolygonSelect(int* polygonPoints, vtkIdType count);
  // Description:
  // Returns true when the next call to Select() will result in renders to
  // capture the selection-buffers.
  virtual bool NeedToRenderForSelection();
  // Description:
  // Called to invalidate the cache.
  void InvalidateCachedSelection()
    { this->Modified(); }
  int AssignUniqueId(vtkProp*);
  // Description:
  // Set the vtkPVSynchronizedRenderWindows instance. This is used to
  // communicate between all active processes.
  void SetSynchronizedWindows(vtkPVSynchronizedRenderWindows*);
//BTX
protected:
  vtkPVHardwareSelector();
  ~vtkPVHardwareSelector();
  // Description:
  // Return a unique ID for the prop.
  virtual int GetPropID(int idx, vtkProp* prop);
  // Description:
  // Returns is the pass indicated is needed.
  // Overridden to report that we always need the process-id pass. In future, we
  // can be smart about it by only requiring it for sessions with more than 1
  // data-server.
  virtual bool PassRequired(int pass);
  // Description:
  // Prepare for selection.
  // Return false if CaptureBuffers() is false
  bool PrepareSelect();
  virtual void SavePixelBuffer(int passNo);
  vtkTimeStamp CaptureTime;
  int UniqueId;
  vtkWeakPointer<vtkPVSynchronizedRenderWindows> SynchronizedWindows;
private:
  vtkPVHardwareSelector(const vtkPVHardwareSelector&); // Not implemented
  void operator=(const vtkPVHardwareSelector&); // Not implemented
  class vtkInternals;
  vtkInternals* Internals;
//ETX
};
#endif
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