vtkXMLStructuredDataReader.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkXMLStructuredDataReader.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 vtkXMLStructuredDataReader_h
#define vtkXMLStructuredDataReader_h
 
#include "vtkIOXMLModule.h" // For export macro
#include "vtkXMLDataReader.h"
 
class VTKIOXML_EXPORT vtkXMLStructuredDataReader : public vtkXMLDataReader
{
public:
  vtkTypeMacro(vtkXMLStructuredDataReader, vtkXMLDataReader);
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
  vtkIdType GetNumberOfPoints() override;
 
  vtkIdType GetNumberOfCells() override;
 
 
  vtkSetMacro(WholeSlices, vtkTypeBool);
  vtkGetMacro(WholeSlices, vtkTypeBool);
  vtkBooleanMacro(WholeSlices, vtkTypeBool);
 
  void CopyOutputInformation(vtkInformation* outInfo, int port) override;
 
protected:
  vtkXMLStructuredDataReader();
  ~vtkXMLStructuredDataReader() override;
 
  virtual void SetOutputExtent(int* extent) = 0;
  int ReadPrimaryElement(vtkXMLDataElement* ePrimary) override;
 
  // Pipeline execute data driver.  Called by vtkXMLReader.
  void ReadXMLData() override;
 
  void SetupOutputInformation(vtkInformation* outInfo) override;
 
  // Internal representation of pieces in the file that may have come
  // from a streamed write.
  int* PieceExtents;
  int* PiecePointDimensions;
  vtkIdType* PiecePointIncrements;
  int* PieceCellDimensions;
  vtkIdType* PieceCellIncrements;
 
  // Whether to read in whole slices mode.
  vtkTypeBool WholeSlices;
 
  // The update extent and corresponding increments and dimensions.
  int UpdateExtent[6];
  int PointDimensions[3];
  int CellDimensions[3];
  vtkIdType PointIncrements[3];
  vtkIdType CellIncrements[3];
 
  int WholeExtent[6];
 
  // The extent currently being read.
  int SubExtent[6];
  int SubPointDimensions[3];
  int SubCellDimensions[3];
 
  // Override methods from superclass.
  void SetupEmptyOutput() override;
  void SetupPieces(int numPieces) override;
  void DestroyPieces() override;
  int ReadArrayForPoints(vtkXMLDataElement* da, vtkAbstractArray* outArray) override;
  int ReadArrayForCells(vtkXMLDataElement* da, vtkAbstractArray* outArray) override;
 
  // Internal utility methods.
  int ReadPiece(vtkXMLDataElement* ePiece) override;
  virtual int ReadSubExtent(int* inExtent, int* inDimensions, vtkIdType* inIncrements,
    int* outExtent, int* outDimensions, vtkIdType* outIncrements, int* subExtent,
    int* subDimensions, vtkXMLDataElement* da, vtkAbstractArray* array, FieldType type);
 
private:
  vtkXMLStructuredDataReader(const vtkXMLStructuredDataReader&) = delete;
  void operator=(const vtkXMLStructuredDataReader&) = delete;
};
 
#endif