ttkTopologicalCompressionReader.h

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#pragma once
 
// TTK
#include <TopologicalCompression.h>
#include <ttkAlgorithm.h>
 
// VTK Module
#include <ttkTopologicalCompressionReaderModule.h>
 
class vtkImageData;
 
class TTKTOPOLOGICALCOMPRESSIONREADER_EXPORT ttkTopologicalCompressionReader
  : public ttkAlgorithm,
    protected ttk::TopologicalCompression {
 
public:
  static ttkTopologicalCompressionReader *New();
 
  vtkTypeMacro(ttkTopologicalCompressionReader, ttkAlgorithm);
 
  vtkSetStringMacro(FileName);
  vtkGetStringMacro(FileName);
 
  vtkSetMacro(DataScalarType, int);
  vtkGetMacro(DataScalarType, int);
 
  // need this method to align with the vtkImageAlgorithm API
  vtkImageData *GetOutput();
 
protected:
  // Regular ImageData reader management.
  ttkTopologicalCompressionReader();
  int FillOutputPortInformation(int, vtkInformation *) override;
  int RequestData(vtkInformation *,
                  vtkInformationVector **,
                  vtkInformationVector *) override;
  int RequestInformation(vtkInformation *request,
                         vtkInformationVector **inputVector,
                         vtkInformationVector *outputVector) override;
 
  // TTK management.
  void BuildMesh(vtkImageData *mesh) const;
 
private:
  // General properties.
  char *FileName{};
 
  // Data properties.
  int DataScalarType;
  std::array<int, 6> DataExtent{0, 0, 0, 0, 0, 0};
  std::array<double, 3> DataSpacing{1.0, 1.0, 1.0};
  std::array<double, 3> DataOrigin{0.0, 0.0, 0.0};
};