itkUnaryFunctorImageFilter.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkUnaryFunctorImageFilter.h,v $
  Language:  C++
  Date:      $Date: 2008-10-07 17:31:02 $
  Version:   $Revision: 1.25 $

  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 __itkUnaryFunctorImageFilter_h
#define __itkUnaryFunctorImageFilter_h

#include "itkInPlaceImageFilter.h"
#include "itkImageRegionIteratorWithIndex.h"

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

  itkNewMacro(Self);
  
  itkTypeMacro(UnaryFunctorImageFilter, InPlaceImageFilter);

  typedef TFunction                                   FunctorType;

  typedef TInputImage                              InputImageType;
  typedef typename    InputImageType::ConstPointer InputImagePointer;
  typedef typename    InputImageType::RegionType   InputImageRegionType; 
  typedef typename    InputImageType::PixelType    InputImagePixelType; 

  typedef TOutputImage                             OutputImageType;
  typedef typename     OutputImageType::Pointer    OutputImagePointer;
  typedef typename     OutputImageType::RegionType OutputImageRegionType;
  typedef typename     OutputImageType::PixelType  OutputImagePixelType;

  FunctorType& GetFunctor() { return m_Functor; };
  const FunctorType& GetFunctor() const { return m_Functor; }

  void SetFunctor(const FunctorType& functor)
    {
    if (m_Functor != functor)
      {
      m_Functor = functor;
      this->Modified();
      }
    }
  
protected:
  UnaryFunctorImageFilter();
  virtual ~UnaryFunctorImageFilter() {};

  virtual void GenerateOutputInformation();

  void ThreadedGenerateData(const OutputImageRegionType& outputRegionForThread,
                            int threadId );

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

  FunctorType m_Functor;
};

} // end namespace itk

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

#endif