vtkXMLUnstructuredGridReader.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
 
#ifndef vtkXMLUnstructuredGridReader_h
#define vtkXMLUnstructuredGridReader_h
 
#include "vtkIOXMLModule.h"   // For export macro
#include "vtkWrappingHints.h" // For VTK_MARSHALAUTO
#include "vtkXMLUnstructuredDataReader.h"
 
VTK_ABI_NAMESPACE_BEGIN
class vtkUnstructuredGrid;
class vtkIdTypeArray;
 
class VTKIOXML_EXPORT VTK_MARSHALAUTO vtkXMLUnstructuredGridReader
  : public vtkXMLUnstructuredDataReader
{
public:
  vtkTypeMacro(vtkXMLUnstructuredGridReader, vtkXMLUnstructuredDataReader);
  void PrintSelf(ostream& os, vtkIndent indent) override;
  static vtkXMLUnstructuredGridReader* New();


  vtkUnstructuredGrid* GetOutput();
  vtkUnstructuredGrid* GetOutput(int idx);
 
protected:
  vtkXMLUnstructuredGridReader();
  ~vtkXMLUnstructuredGridReader() override;
 
  const char* GetDataSetName() override;
  void GetOutputUpdateExtent(int& piece, int& numberOfPieces, int& ghostLevel) override;
  void SetupOutputTotals() override;
  void SetupPieces(int numPieces) override;
  void DestroyPieces() override;
 
  void SetupOutputData() override;
  int ReadPiece(vtkXMLDataElement* ePiece) override;
  void SetupNextPiece() override;
  int ReadPieceData() override;
 
  // Read a data array whose tuples correspond to cells.
  int ReadArrayForCells(vtkXMLDataElement* da, vtkAbstractArray* outArray) override;
 
  // Get the number of cells in the given piece.  Valid after
  // UpdateInformation.
  vtkIdType GetNumberOfCellsInPiece(int piece) override;
 
  int FillOutputPortInformation(int, vtkInformation*) override;
 
  // The index of the cell in the output where the current piece
  // begins.
  vtkIdType StartCell;
 
  // The Cells element for each piece.
  vtkXMLDataElement** CellElements;
  vtkIdType* NumberOfCells;
 
  int CellsTimeStep;
  unsigned long CellsOffset;
 
private:
  vtkXMLUnstructuredGridReader(const vtkXMLUnstructuredGridReader&) = delete;
  void operator=(const vtkXMLUnstructuredGridReader&) = delete;
};
 
VTK_ABI_NAMESPACE_END
#endif