vtkPGenericIOReader.h

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

 Program:   Visualization Toolkit
 Module:    vtkPGenericIOReader.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 vtkPGenericIOReader_h
#define vtkPGenericIOReader_h

// VTK includes
#include "vtkPVVTKExtensionsCosmoToolsModule.h" // For export macro
#include "vtkUnstructuredGridAlgorithm.h"

#include <set> // for std::set in protected methods

// Forward Declarations
class vtkCallbackCommand;
class vtkDataArray;
class vtkDataArraySelection;
class vtkGenericIOMetaData;
class vtkIdList;
class vtkInformation;
class vtkInformationVector;
class vtkMultiProcessController;
class vtkStringArray;
class vtkUnstructuredGrid;

// GenericIO Forward Declarations
namespace gio
{
class GenericIOReader;
}

class VTKPVVTKEXTENSIONSCOSMOTOOLS_EXPORT vtkPGenericIOReader : public vtkUnstructuredGridAlgorithm
{
public:
  enum IOType
  {
    IOTYPEMPI,
    IOTYPEPOSIX
  };

  enum BlockAssignment
  {
    ROUND_ROBIN,
    RCB
  };

  static vtkPGenericIOReader* New();
  vtkTypeMacro(vtkPGenericIOReader, vtkUnstructuredGridAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent);


  vtkSetStringMacro(FileName);
  vtkGetStringMacro(FileName);


  vtkSetStringMacro(XAxisVariableName);
  vtkGetStringMacro(XAxisVariableName);


  vtkSetStringMacro(YAxisVariableName);
  vtkGetStringMacro(YAxisVariableName);


  vtkSetStringMacro(ZAxisVariableName);
  vtkGetStringMacro(ZAxisVariableName);


  vtkSetMacro(GenericIOType, int);
  vtkGetMacro(GenericIOType, int);


  vtkSetMacro(BlockAssignment, int);
  vtkGetMacro(BlockAssignment, int);


  vtkSetMacro(RankInQuery, int);
  vtkGetMacro(RankInQuery, int);


  vtkSetMacro(QueryRankNeighbors, int);
  vtkGetMacro(QueryRankNeighbors, int);


  vtkSetMacro(AppendBlockCoordinates, bool);
  vtkBooleanMacro(AppendBlockCoordinates, bool);
  vtkGetMacro(AppendBlockCoordinates, bool);


  vtkGetObjectMacro(ArrayList, vtkStringArray);


  vtkGetObjectMacro(PointDataArraySelection, vtkDataArraySelection);


  vtkSetMacro(Controller, vtkMultiProcessController*);
  vtkGetMacro(Controller, vtkMultiProcessController*);

  int GetNumberOfPointArrays();

  const char* GetPointArrayName(int i);

  int GetPointArrayStatus(const char* name);

  void SetPointArrayStatus(const char* name, int status);


  vtkSetStringMacro(HaloIdVariableName);
  vtkGetStringMacro(HaloIdVariableName);

  vtkIdType GetRequestedHaloId(vtkIdType i);

  vtkIdType GetNumberOfRequestedHaloIds();

  void SetNumberOfRequestedHaloIds(vtkIdType numIds);

  void AddRequestedHaloId(vtkIdType haloId);

  void ClearRequestedHaloIds();

  void SetRequestedHaloId(vtkIdType i, vtkIdType haloId);

protected:
  vtkPGenericIOReader();
  virtual ~vtkPGenericIOReader();

  // Pipeline methods
  virtual int RequestInformation(vtkInformation*, vtkInformationVector**, vtkInformationVector*);
  virtual int RequestData(vtkInformation*, vtkInformationVector**, vtkInformationVector*);

  void LoadMetaData();

  bool ReaderParametersChanged();

  gio::GenericIOReader* GetInternalReader();

  void GetPointFromRawData(int xType, void* xBuffer, int yType, void* yBuffer, int zType,
    void* zBuffer, vtkIdType idx, double pnt[3]);

  void LoadRawVariableData(std::string varName);

  void LoadRawData();

  void LoadCoordinates(vtkUnstructuredGrid* grid, std::set<vtkIdType>& pointsInSelectedHalos);

  void LoadData(vtkUnstructuredGrid* grid, const std::set<vtkIdType>& pointsInSelectedHalos);

  void FindRankNeighbors();

  static void SelectionModifiedCallback(
    vtkObject* caller, unsigned long eid, void* clientdata, void* calldata);

  char* XAxisVariableName;
  char* YAxisVariableName;
  char* ZAxisVariableName;
  char* HaloIdVariableName;

  char* FileName;
  int GenericIOType;
  int BlockAssignment;

  int QueryRankNeighbors;
  int RankInQuery;

  bool BuildMetaData;
  bool AppendBlockCoordinates;

  vtkMultiProcessController* Controller;

  vtkStringArray* ArrayList;
  vtkIdList* HaloList;
  vtkDataArraySelection* PointDataArraySelection;
  vtkCallbackCommand* SelectionObserver;

  gio::GenericIOReader* Reader;
  vtkGenericIOMetaData* MetaData;

  int RequestInfoCounter;
  int RequestDataCounter;

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

#endif /* vtkPGenericIOReader_h */