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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
/**
* @class vtkImageSpatialAlgorithm
* @brief Filters that operate on pixel neighborhoods.
*
* vtkImageSpatialAlgorithm is a super class for filters that operate on an
* input neighborhood for each output pixel. It handles even sized
* neighborhoods, but their can be a half pixel shift associated with
* processing. This superclass has some logic for handling boundaries. It
* can split regions into boundary and non-boundary pieces and call different
* execute methods.
*/
#ifndef vtkImageSpatialAlgorithm_h
#define vtkImageSpatialAlgorithm_h
#include "vtkImagingGeneralModule.h" // For export macro
#include "vtkThreadedImageAlgorithm.h"
VTK_ABI_NAMESPACE_BEGIN
class VTKIMAGINGGENERAL_EXPORT vtkImageSpatialAlgorithm : public vtkThreadedImageAlgorithm
{
public:
static vtkImageSpatialAlgorithm* New();
vtkTypeMacro(vtkImageSpatialAlgorithm, vtkThreadedImageAlgorithm);
void PrintSelf(ostream& os, vtkIndent indent) override;
///@{
/**
* Get the Kernel size.
*/
vtkGetVector3Macro(KernelSize, int);
///@}
///@{
/**
* Get the Kernel middle.
*/
vtkGetVector3Macro(KernelMiddle, int);
///@}
protected:
vtkImageSpatialAlgorithm();
~vtkImageSpatialAlgorithm() override = default;
int KernelSize[3];
int KernelMiddle[3]; // Index of kernel origin
int HandleBoundaries; // Output shrinks if boundaries aren't handled
int RequestInformation(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
void ComputeOutputWholeExtent(int extent[6], int handleBoundaries);
int RequestUpdateExtent(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
void InternalRequestUpdateExtent(int* extent, int* inExtent, int* wholeExtent);
private:
vtkImageSpatialAlgorithm(const vtkImageSpatialAlgorithm&) = delete;
void operator=(const vtkImageSpatialAlgorithm&) = delete;
};
VTK_ABI_NAMESPACE_END
#endif
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