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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
/**
* @class vtkImageResample
* @brief Resamples an image to be larger or smaller.
*
* This filter produces an output with different spacing (and extent)
* than the input. Linear interpolation can be used to resample the data.
* The Output spacing can be set explicitly or relative to input spacing
* with the SetAxisMagnificationFactor method.
*/
#ifndef vtkImageResample_h
#define vtkImageResample_h
#include "vtkImageReslice.h"
#include "vtkImagingCoreModule.h" // For export macro
VTK_ABI_NAMESPACE_BEGIN
class VTKIMAGINGCORE_EXPORT vtkImageResample : public vtkImageReslice
{
public:
static vtkImageResample* New();
vtkTypeMacro(vtkImageResample, vtkImageReslice);
void PrintSelf(ostream& os, vtkIndent indent) override;
///@{
/**
* Set desired spacing.
* Zero is a reserved value indicating spacing has not been set.
*/
void SetOutputSpacing(double sx, double sy, double sz) override;
void SetOutputSpacing(const double spacing[3]) override
{
this->SetOutputSpacing(spacing[0], spacing[1], spacing[2]);
}
void SetAxisOutputSpacing(int axis, double spacing);
///@}
///@{
/**
* Set/Get Magnification factors.
* Zero is a reserved value indicating values have not been computed.
*/
void SetMagnificationFactors(double fx, double fy, double fz);
void SetMagnificationFactors(const double f[3])
{
this->SetMagnificationFactors(f[0], f[1], f[2]);
}
vtkGetVector3Macro(MagnificationFactors, double);
void SetAxisMagnificationFactor(int axis, double factor);
///@}
/**
* Get the computed magnification factor for a specific axis.
* The input information is required to compute the value.
*/
double GetAxisMagnificationFactor(int axis, vtkInformation* inInfo = nullptr);
///@{
/**
* Dimensionality is the number of axes which are considered during
* execution. To process images dimensionality would be set to 2.
* This has the same effect as setting the magnification of the third
* axis to 1.0
*/
vtkSetMacro(Dimensionality, int);
vtkGetMacro(Dimensionality, int);
///@}
protected:
vtkImageResample();
~vtkImageResample() override = default;
double MagnificationFactors[3];
int Dimensionality;
int RequestInformation(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
private:
vtkImageResample(const vtkImageResample&) = delete;
void operator=(const vtkImageResample&) = delete;
};
VTK_ABI_NAMESPACE_END
#endif
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