vtkNIFTIImageReader.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
 
#ifndef vtkNIFTIImageReader_h
#define vtkNIFTIImageReader_h
 
#include "vtkIOImageModule.h" // For export macro
#include "vtkImageReader2.h"
 
VTK_ABI_NAMESPACE_BEGIN
class vtkNIFTIImageHeader;
class vtkMatrix4x4;
VTK_ABI_NAMESPACE_END
 
struct nifti_1_header;
 
VTK_ABI_NAMESPACE_BEGIN
 
//----------------------------------------------------------------------------
class VTKIOIMAGE_EXPORT vtkNIFTIImageReader : public vtkImageReader2
{
public:

  static vtkNIFTIImageReader* New();
  vtkTypeMacro(vtkNIFTIImageReader, vtkImageReader2);

  void PrintSelf(ostream& os, vtkIndent indent) override;

  const char* GetFileExtensions() override { return ".nii .nii.gz .img .img.gz .hdr .hdr.gz"; }

  const char* GetDescriptiveName() override { return "NIfTI"; }
 
  using Superclass::CanReadFile;
  int CanReadFile(VTK_FILEPATH const char* filename) override;


  vtkGetMacro(TimeAsVector, bool);
  vtkSetMacro(TimeAsVector, bool);
  vtkBooleanMacro(TimeAsVector, bool);

  int GetTimeDimension() { return this->Dim[4]; }
  double GetTimeSpacing() { return this->PixDim[4]; }

  double GetRescaleSlope() { return this->RescaleSlope; }
  double GetRescaleIntercept() { return this->RescaleIntercept; }


  vtkGetMacro(PlanarRGB, bool);
  vtkSetMacro(PlanarRGB, bool);
  vtkBooleanMacro(PlanarRGB, bool);

  double GetQFac() { return this->QFac; }

  vtkMatrix4x4* GetQFormMatrix() { return this->QFormMatrix; }

  vtkMatrix4x4* GetSFormMatrix() { return this->SFormMatrix; }

  vtkNIFTIImageHeader* GetNIFTIHeader();
 
protected:
  vtkNIFTIImageReader();
  ~vtkNIFTIImageReader() override;

  int RequestInformation(vtkInformation* request, vtkInformationVector** inputVector,
    vtkInformationVector* outputVector) override;

  int RequestData(vtkInformation* request, vtkInformationVector** inputVector,
    vtkInformationVector* outputVector) override;

  static bool CheckExtension(const char* filename, const char* ext);

  static char* ReplaceExtension(const char* filename, const char* ext1, const char* ext2);

  static int CheckNIFTIVersion(const nifti_1_header* hdr);

  static bool CheckAnalyzeHeader(const nifti_1_header* hdr);

  bool TimeAsVector;


  double RescaleIntercept;
  double RescaleSlope;

  double QFac;


  vtkMatrix4x4* QFormMatrix;
  vtkMatrix4x4* SFormMatrix;

  int Dim[8];

  double PixDim[8];

  vtkNIFTIImageHeader* NIFTIHeader;

  bool PlanarRGB;
 
private:
  vtkNIFTIImageReader(const vtkNIFTIImageReader&) = delete;
  void operator=(const vtkNIFTIImageReader&) = delete;
};
 
VTK_ABI_NAMESPACE_END
#endif // vtkNIFTIImageReader_h