vtkHDFReader.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#ifndef vtkHDFReader_h
#define vtkHDFReader_h
 
#include "vtkDataObjectAlgorithm.h"
#include "vtkIOHDFModule.h" // For export macro
#include <array>            // For storing the time range
#include <vector>           // For storing list of values
 
VTK_ABI_NAMESPACE_BEGIN
class vtkAbstractArray;
class vtkCallbackCommand;
class vtkCommand;
class vtkDataArraySelection;
class vtkDataSet;
class vtkDataSetAttributes;
class vtkImageData;
class vtkInformationVector;
class vtkInformation;
class vtkOverlappingAMR;
class vtkPolyData;
class vtkUnstructuredGrid;
 
class VTKIOHDF_EXPORT vtkHDFReader : public vtkDataObjectAlgorithm
{
public:
  static vtkHDFReader* New();
  vtkTypeMacro(vtkHDFReader, vtkDataObjectAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
 
  vtkSetFilePathMacro(FileName);
  vtkGetFilePathMacro(FileName);
 
  virtual int CanReadFile(VTK_FILEPATH const char* name);
 
 
  vtkDataSet* GetOutputAsDataSet();
  vtkDataSet* GetOutputAsDataSet(int index);
 
 
  virtual vtkDataArraySelection* GetPointDataArraySelection();
  virtual vtkDataArraySelection* GetCellDataArraySelection();
  virtual vtkDataArraySelection* GetFieldDataArraySelection();
 
 
  int GetNumberOfPointArrays();
  int GetNumberOfCellArrays();
 
 
  const char* GetPointArrayName(int index);
  const char* GetCellArrayName(int index);
 
 
  vtkGetMacro(HasTransientData, bool);
  vtkGetMacro(NumberOfSteps, vtkIdType);
  vtkGetMacro(Step, vtkIdType);
  vtkSetMacro(Step, vtkIdType);
  vtkGetMacro(TimeValue, double);
  const std::array<double, 2>& GetTimeRange() const { return this->TimeRange; }
 
  vtkSetMacro(MaximumLevelsToReadByDefaultForAMR, unsigned int);
  vtkGetMacro(MaximumLevelsToReadByDefaultForAMR, unsigned int);
 
protected:
  vtkHDFReader();
  ~vtkHDFReader() override;
 
  constexpr static int GetNumberOfAttributeTypes() { return 3; }
 
  int CanReadFileVersion(int major, int minor);
 
 
  int Read(vtkInformation* outInfo, vtkImageData* data);
  int Read(vtkInformation* outInfo, vtkUnstructuredGrid* data);
  int Read(vtkInformation* outInfo, vtkPolyData* data);
  int Read(vtkInformation* outInfo, vtkOverlappingAMR* data);
 
  int Read(const std::vector<vtkIdType>& numberOfPoints,
    const std::vector<vtkIdType>& numberOfCells,
    const std::vector<vtkIdType>& numberOfConnectivityIds, vtkIdType partOffset,
    vtkIdType startingPointOffset, vtkIdType startingCellOffset,
    vtkIdType startingConnectctivityIdOffset, int filePiece, vtkUnstructuredGrid* pieceData);
  int AddFieldArrays(vtkDataObject* data);
 
  static void SelectionModifiedCallback(
    vtkObject* caller, unsigned long eid, void* clientdata, void* calldata);
 
 
  int RequestDataObject(vtkInformation* request, vtkInformationVector** inputVector,
    vtkInformationVector* outputVector) override;
  int RequestInformation(vtkInformation* request, vtkInformationVector** inputVector,
    vtkInformationVector* outputVector) override;
  int RequestData(vtkInformation* request, vtkInformationVector** inputVector,
    vtkInformationVector* outputVector) override;
 
  void PrintPieceInformation(vtkInformation* outInfo);
 
private:
  vtkHDFReader(const vtkHDFReader&) = delete;
  void operator=(const vtkHDFReader&) = delete;
 
protected:
  char* FileName;
 
  vtkDataArraySelection* DataArraySelection[3];
 
  vtkCallbackCommand* SelectionObserver;
 
  int WholeExtent[6];
  double Origin[3];
  double Spacing[3];
 
 
  bool HasTransientData = false;
  vtkIdType Step = 0;
  vtkIdType NumberOfSteps = 1;
  double TimeValue = 0.0;
  std::array<double, 2> TimeRange;
 
  unsigned int MaximumLevelsToReadByDefaultForAMR = 0;
 
  class Implementation;
  Implementation* Impl;
};
 
VTK_ABI_NAMESPACE_END
#endif