vtkImageReader.h

Go to the documentation of this file.

// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#ifndef vtkImageReader_h
#define vtkImageReader_h

#include "vtkIOImageModule.h" // For export macro
#include "vtkImageReader2.h"

VTK_ABI_NAMESPACE_BEGIN
class vtkTransform;

#define VTK_FILE_BYTE_ORDER_BIG_ENDIAN 0
#define VTK_FILE_BYTE_ORDER_LITTLE_ENDIAN 1

class VTKIOIMAGE_EXPORT vtkImageReader : public vtkImageReader2
{
public:
  static vtkImageReader* New();
  vtkTypeMacro(vtkImageReader, vtkImageReader2);
  void PrintSelf(ostream& os, vtkIndent indent) override;


  vtkSetVector6Macro(DataVOI, int);
  vtkGetVector6Macro(DataVOI, int);


  vtkGetMacro(DataMask, vtkTypeUInt64);
  vtkSetMacro(DataMask, vtkTypeUInt64);


  virtual void SetTransform(vtkTransform*);
  vtkGetObjectMacro(Transform, vtkTransform);

  // Warning !!!
  // following should only be used by methods or template helpers, not users
  void ComputeInverseTransformedExtent(int inExtent[6], int outExtent[6]);
  void ComputeInverseTransformedIncrements(vtkIdType inIncr[3], vtkIdType outIncr[3]);

  int OpenAndSeekFile(int extent[6], int slice);

  vtkTypeInt64 ComputeStartOffset(int dataExtent[6], int idx);


  vtkSetStringMacro(ScalarArrayName);
  vtkGetStringMacro(ScalarArrayName);

  using Superclass::CanReadFile;
  int CanReadFile(VTK_FILEPATH const char*) override
  {
    return 1; // I think I can read the file but I cannot prove it
  }

protected:
  vtkImageReader();
  ~vtkImageReader() override;

  vtkTypeUInt64 DataMask;

  vtkTransform* Transform;

  void ComputeTransformedSpacing(double Spacing[3]);
  void ComputeTransformedOrigin(double origin[3]);
  void ComputeTransformedExtent(int inExtent[6], int outExtent[6]);
  void ComputeTransformedIncrements(vtkIdType inIncr[3], vtkIdType outIncr[3]);

  int DataVOI[6];

  char* ScalarArrayName;

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

  void ExecuteDataWithInformation(vtkDataObject* data, vtkInformation* outInfo) override;

private:
  vtkImageReader(const vtkImageReader&) = delete;
  void operator=(const vtkImageReader&) = delete;
};

VTK_ABI_NAMESPACE_END
#endif