vtkReaderAlgorithm.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkReaderAlgorithm.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 vtkReaderAlgorithm_h
#define vtkReaderAlgorithm_h
 
#include "vtkAlgorithm.h"
#include "vtkCommonExecutionModelModule.h" // For export macro
 
class VTKCOMMONEXECUTIONMODEL_EXPORT vtkReaderAlgorithm : public vtkAlgorithm
{
public:
  vtkTypeMacro(vtkReaderAlgorithm, vtkAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
  vtkTypeBool ProcessRequest(
    vtkInformation* request, vtkInformationVector** inInfo, vtkInformationVector* outInfo) override;
 
  virtual vtkDataObject* CreateOutput(vtkDataObject* currentOutput) { return currentOutput; }
 
  virtual int ReadMetaData(vtkInformation* metadata) = 0;
 
  virtual int ReadTimeDependentMetaData(int /*timestep*/, vtkInformation* /*metadata*/)
  {
    return 1;
  }
 
  virtual int ReadMesh(
    int piece, int npieces, int nghosts, int timestep, vtkDataObject* output) = 0;
 
  virtual int ReadPoints(
    int piece, int npieces, int nghosts, int timestep, vtkDataObject* output) = 0;
 
  virtual int ReadArrays(
    int piece, int npieces, int nghosts, int timestep, vtkDataObject* output) = 0;
 
protected:
  vtkReaderAlgorithm();
  ~vtkReaderAlgorithm() override;
 
private:
  vtkReaderAlgorithm(const vtkReaderAlgorithm&) = delete;
  void operator=(const vtkReaderAlgorithm&) = delete;
};
 
#endif