itkDerivativeImageFilter.h

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/*=========================================================================

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkDerivativeImageFilter.h,v $
  Language:  C++
  Date:      $Date: 2003/09/10 14:28:46 $
  Version:   $Revision: 1.18 $

  Copyright (c) Insight Software Consortium. All rights reserved.
  See ITKCopyright.txt or http://www.itk.org/HTML/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 notices for more information.

=========================================================================*/
#ifndef __itkDerivativeImageFilter_h
#define __itkDerivativeImageFilter_h

#include "itkImageToImageFilter.h"
#include "itkImage.h"

namespace itk
{
template <class TInputImage, class TOutputImage>
class ITK_EXPORT DerivativeImageFilter :
    public ImageToImageFilter< TInputImage, TOutputImage > 
{
public:
  typedef DerivativeImageFilter Self;
  typedef ImageToImageFilter< TInputImage, TOutputImage > Superclass;
  typedef SmartPointer<Self> Pointer;
  typedef SmartPointer<const Self>  ConstPointer;

  typedef typename TOutputImage::PixelType OutputPixelType;
  typedef typename TOutputImage::InternalPixelType OutputInternalPixelType;
  typedef typename TInputImage::PixelType InputPixelType;
  typedef typename TInputImage::InternalPixelType InputInternalPixelType;

  itkStaticConstMacro(ImageDimension, unsigned int,
                      TOutputImage::ImageDimension);
  
  typedef TInputImage  InputImageType;
  typedef TOutputImage OutputImageType;

  itkNewMacro(Self);

  itkTypeMacro(DerivativeImageFilter, ImageToImageFilter);
  
  itkSetMacro(Order, unsigned int);
  itkGetMacro(Order, unsigned int);
  itkSetMacro(Direction, unsigned int);
  itkGetMacro(Direction, unsigned int);

  void SetUseImageSpacingOn()
  { this->SetUseImageSpacing(true); }
  
  void SetUseImageSpacingOff()
  { this->SetUseImageSpacing(false); }
  
  itkSetMacro(UseImageSpacing, bool);
  itkGetMacro(UseImageSpacing, bool);
  
  virtual void GenerateInputRequestedRegion() throw(InvalidRequestedRegionError);

protected:
  DerivativeImageFilter()
  {
    m_Order = 1;
    m_Direction = 0;
    m_UseImageSpacing = true;
  }
  virtual ~DerivativeImageFilter() {}
  void PrintSelf(std::ostream& os, Indent indent) const;

  void GenerateData();

private:
  DerivativeImageFilter(const Self&); //purposely not implemented
  void operator=(const Self&); //purposely not implemented

  unsigned int m_Order;

  unsigned int m_Direction;

  bool m_UseImageSpacing;
  
};
  
} // end namespace itk

#ifndef ITK_MANUAL_INSTANTIATION
#include "itkDerivativeImageFilter.txx"
#endif

#endif

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