vtkPParticleTracerBase.h

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

  Program:   Visualization Toolkit
  Module:    vtkParticleTracerBase.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.

=========================================================================*/
#ifndef vtkPParticleTracerBase_h
#define vtkPParticleTracerBase_h

#include "vtkSmartPointer.h" // For protected ivars.
#include "vtkParticleTracerBase.h"

#include <vector> // STL Header

#include "vtkFiltersParallelFlowPathsModule.h" // For export macro

class VTKFILTERSPARALLELFLOWPATHS_EXPORT vtkPParticleTracerBase : public vtkParticleTracerBase
{
public:
  vtkTypeMacro(vtkPParticleTracerBase,vtkParticleTracerBase);
  void PrintSelf(ostream& os, vtkIndent indent) override;


  virtual void SetController(vtkMultiProcessController* controller);
  vtkGetObjectMacro(Controller, vtkMultiProcessController);

protected:
  struct  RemoteParticleInfo
  {
    vtkParticleTracerBaseNamespace::ParticleInformation Current;
    vtkParticleTracerBaseNamespace::ParticleInformation Previous;
    vtkSmartPointer<vtkPointData> PreviousPD;
  };

  typedef std::vector<RemoteParticleInfo>  RemoteParticleVector;

  vtkPParticleTracerBase();
  ~vtkPParticleTracerBase();

  virtual int RequestUpdateExtent(vtkInformation* request,
                                  vtkInformationVector** inputVector,
                                  vtkInformationVector* outputVector) override;

//

  virtual vtkPolyData* Execute(vtkInformationVector** inputVector) override;
  virtual bool SendParticleToAnotherProcess(vtkParticleTracerBaseNamespace::ParticleInformation & info,
                                            vtkParticleTracerBaseNamespace::ParticleInformation & previous,
                                            vtkPointData*) override;

  virtual void AssignSeedsToProcessors(double time,
                                       vtkDataSet *source, int sourceID, int ptId,
                                       vtkParticleTracerBaseNamespace::ParticleVector &localSeedPoints,
                                       int &localAssignedCount) override;

  virtual void AssignUniqueIds(
    vtkParticleTracerBaseNamespace::ParticleVector &localSeedPoints) override;

  virtual bool SendReceiveParticles(RemoteParticleVector &outofdomain, RemoteParticleVector &received);

  virtual bool UpdateParticleListFromOtherProcesses() override;

  virtual bool IsPointDataValid(vtkDataObject* input) override;


//

//

  // MPI controller needed when running in parallel
  vtkMultiProcessController* Controller;

  // List used for transmitting between processors during parallel operation
  RemoteParticleVector MPISendList;

  RemoteParticleVector Tail; //this is to receive the "tails" of traces from other processes
private:
  vtkPParticleTracerBase(const vtkPParticleTracerBase&) = delete;
  void operator=(const vtkPParticleTracerBase&) = delete;
};
#endif