vtkGeoSource.h

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/*=========================================================================

  Program:   Visualization Toolkit
  Module:    vtkGeoSource.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.

=========================================================================*/
/*-------------------------------------------------------------------------
  Copyright 2008 Sandia Corporation.
  Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
  the U.S. Government retains certain rights in this software.
-------------------------------------------------------------------------*/
#ifndef vtkGeoSource_h
#define vtkGeoSource_h

#include "vtkGeovisCoreModule.h" // For export macro
#include "vtkObject.h"

class vtkAbstractTransform;
class vtkCollection;
class vtkConditionVariable;
class vtkGeoTreeNode;
class vtkMultiThreader;
class vtkMutexLock;

#if !defined(VTK_LEGACY_REMOVE)
class VTKGEOVISCORE_EXPORT vtkGeoSource : public vtkObject
{
public:
  vtkTypeMacro(vtkGeoSource,vtkObject);

  vtkGeoSource();
  ~vtkGeoSource() override;


  virtual bool FetchRoot(vtkGeoTreeNode* root) = 0;
  virtual bool FetchChild(vtkGeoTreeNode* node, int index, vtkGeoTreeNode* child) = 0;


  virtual void RequestChildren(vtkGeoTreeNode* node);
  virtual vtkCollection* GetRequestedNodes(vtkGeoTreeNode* node);

  void Initialize(int numThreads = 1);

  void ShutDown();

  void WorkerThread();

  virtual vtkAbstractTransform* GetTransform() { return nullptr; }

protected:

  vtkCollection* InputSet;
  vtkCollection* ProcessingSet;


  vtkMutexLock* InputSetLock;
  vtkMutexLock* ProcessingSetLock;
  vtkMutexLock* OutputSetLock;

  vtkMutexLock* Lock;

  vtkConditionVariable* Condition;

  vtkMultiThreader* Threader;
  bool StopThread;
  bool Initialized;

  class implementation;
  implementation* Implementation;

private:
  vtkGeoSource(const vtkGeoSource&) = delete;
  void operator=(const vtkGeoSource&) = delete;
};

#endif //VTK_LEGACY_REMOVE
#endif // vtkGeoSource_h