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/*=========================================================================
Program: Visualization Toolkit
Module: $RCSfile: vtkImageSpatialAlgorithm.h,v $
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
// .NAME vtkImageSpatialAlgorithm - Filters that operate on pixel neighborhoods.
// .SECTION Description
// 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 "vtkThreadedImageAlgorithm.h"
class VTK_IMAGING_EXPORT vtkImageSpatialAlgorithm : public vtkThreadedImageAlgorithm
{
public:
static vtkImageSpatialAlgorithm *New();
vtkTypeRevisionMacro(vtkImageSpatialAlgorithm,vtkThreadedImageAlgorithm);
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Get the Kernel size.
int *GetKernelSize() {return this->KernelSize;}
// Description:
// Get the Kernel middle.
int *GetKernelMiddle() {return this->KernelMiddle;}
protected:
vtkImageSpatialAlgorithm();
~vtkImageSpatialAlgorithm() {};
int KernelSize[3];
int KernelMiddle[3]; // Index of kernel origin
int Strides[3]; // Shrink factor
int HandleBoundaries; // Output shrinks if boundaries aren't handled
virtual int RequestInformation (vtkInformation *, vtkInformationVector **, vtkInformationVector *);
void ComputeOutputWholeExtent(int extent[6], int handleBoundaries);
virtual int RequestUpdateExtent(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
void InternalRequestUpdateExtent(int *extent, int *inExtent, int *wholeExtent);
private:
vtkImageSpatialAlgorithm(const vtkImageSpatialAlgorithm&); // Not implemented.
void operator=(const vtkImageSpatialAlgorithm&); // Not implemented.
};
#endif
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