itkUnaryFunctorImageFilter.h

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/*=========================================================================
 *
 *  Copyright Insight Software Consortium
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0.txt
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *=========================================================================*/
#ifndef __itkUnaryFunctorImageFilter_h
#define __itkUnaryFunctorImageFilter_h

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

namespace itk
{
template< typename TInputImage, typename TOutputImage, typename TFunction >
class 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,
                            ThreadIdType 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.hxx"
#endif

#endif