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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
/**
* @class vtkImageReader
* @brief Superclass of transformable binary file readers.
*
* vtkImageReader provides methods needed to read a region from a file.
* It supports both transforms and masks on the input data, but as a result
* is more complicated and slower than its parent class vtkImageReader2.
*
* @sa
* vtkBMPReader vtkPNMReader vtkTIFFReader
*/
#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;
///@{
/**
* Set/get the data VOI. You can limit the reader to only
* read a subset of the data.
*/
vtkSetVector6Macro(DataVOI, int);
vtkGetVector6Macro(DataVOI, int);
///@}
///@{
/**
* Set/Get the Data mask. The data mask is a simply integer whose bits are
* treated as a mask to the bits read from disk. That is, the data mask is
* bitwise-and'ed to the numbers read from disk. This ivar is stored as 64
* bits, the largest mask you will need. The mask will be truncated to the
* data size required to be read (using the least significant bits).
*/
vtkGetMacro(DataMask, vtkTypeUInt64);
vtkSetMacro(DataMask, vtkTypeUInt64);
///@}
///@{
/**
* Set/Get transformation matrix to transform the data from slice space
* into world space. This matrix must be a permutation matrix. To qualify,
* the sums of the rows must be + or - 1.
*/
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);
///@{
/**
* Set/get the scalar array name for this data set.
*/
vtkSetStringMacro(ScalarArrayName);
vtkGetStringMacro(ScalarArrayName);
///@}
/**
* vtkImageReader itself can read raw binary files. That being the case,
* we need to implement `CanReadFile` to return success for any file.
* Subclasses that read specific file format should override and implement
* appropriate checks for file format.
*/
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
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