vtkPNetCDFPOPReader.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtPkNetCDFPOPReader.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 vtkPNetCDFPOPReader_h
#define vtkPNetCDFPOPReader_h
 
#include "vtkIOParallelNetCDFModule.h" // For export macro
#include "vtkRectilinearGridAlgorithm.h"
 
class vtkDataArraySelection;
class vtkCallbackCommand;
class vtkMPIController;
class vtkPNetCDFPOPReaderInternal;
 
class VTKIOPARALLELNETCDF_EXPORT vtkPNetCDFPOPReader : public vtkRectilinearGridAlgorithm
{
public:
  vtkTypeMacro(vtkPNetCDFPOPReader,vtkRectilinearGridAlgorithm);
  static vtkPNetCDFPOPReader *New();
  void PrintSelf(ostream& os, vtkIndent indent);
 
 
  vtkSetStringMacro(FileName);
  vtkGetStringMacro(FileName);
 
 
  vtkSetVector3Macro(Stride, int);
  vtkGetVector3Macro(Stride, int);
 
 
  virtual int GetNumberOfVariableArrays();
  virtual const char *GetVariableArrayName(int idx);
  virtual int GetVariableArrayStatus(const char *name);
  virtual void SetVariableArrayStatus(const char *name, int status);
 
  void SetReaderRanks(vtkIdList*);
 
  // Set/Get the vtkMultiProcessController which will handle communications
  // for the parallel rendering.
  vtkGetObjectMacro(Controller, vtkMPIController);
  void SetController(vtkMPIController *controller);
 
protected:
  vtkPNetCDFPOPReader();
  ~vtkPNetCDFPOPReader();
 
  int RequestData(vtkInformation*,vtkInformationVector**,
                  vtkInformationVector*);
  virtual int RequestInformation(vtkInformation* request,
                                 vtkInformationVector** inputVector,
                                 vtkInformationVector* outputVector);
 
  // Helper function for RequestData:  Reads part of the netCDF
  // file and sends sub-arrays to all ranks that need that data
  int ReadAndSend( vtkInformation* outInfo, int varID);
 
  // Returns the MPI rank of the process that should read the specified depth
  int ReaderForDepth( unsigned depth);
 
  bool IsReaderRank();
  bool IsFirstReaderRank();
 
  static void SelectionModifiedCallback(vtkObject *caller, unsigned long eid,
                                        void *clientdata, void *calldata);
 
  static void EventCallback(vtkObject* caller, unsigned long eid,
                            void* clientdata, void* calldata);
 
  vtkCallbackCommand* SelectionObserver;
 
  char *FileName;
  char *OpenedFileName;
  vtkSetStringMacro(OpenedFileName);
 
  int NCDFFD; //netcdf file descriptor
 
  int Stride[3];
 
  vtkMPIController *Controller;
 
private:
  vtkPNetCDFPOPReader(const vtkPNetCDFPOPReader&);  // Not implemented.
  void operator=(const vtkPNetCDFPOPReader&);  // Not implemented.
 
  vtkPNetCDFPOPReaderInternal* Internals;
};
#endif