itkTernaryOperatorImageFilter.h

Go to the documentation of this file.

/*=========================================================================
 *
 *  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 itkTernaryOperatorImageFilter_h
#define itkTernaryOperatorImageFilter_h

#include "itkTernaryFunctorImageFilter.h"

namespace itk
{
namespace Functor
{
template< typename TInput1, typename TInput2, typename TInput3, typename TOutput >
class TernaryOperator
{
public:
  TernaryOperator() {}
  ~TernaryOperator() {}
  bool operator!=(const TernaryOperator &) const
  {
    return false;
  }

  bool operator==(const TernaryOperator & other) const
  {
    return !( *this != other );
  }

  inline TOutput operator()(const TInput1 & A,
                            const TInput2 & B,
                            const TInput3 & C) const
  {
    if (A)
      {
      return static_cast<TOutput>( B );
      }
    else
      {
      return static_cast<TOutput>( C );
      }
  }
};
}
template< typename TMask, typename TImage >
class TernaryOperatorImageFilter:
  public
  TernaryFunctorImageFilter< TMask, TImage, TImage, TImage,
                             Functor::TernaryOperator< typename TMask::PixelType,
                                                       typename TImage::PixelType,
                                                       typename TImage::PixelType,
                                                       typename TImage::PixelType >   >
{
public:
  typedef TernaryOperatorImageFilter Self;
  typedef TernaryFunctorImageFilter<
    TMask, TImage, TImage, TImage,
    Functor::TernaryOperator< typename TMask::PixelType,
                              typename TImage::PixelType,
                              typename TImage::PixelType,
                              typename TImage::PixelType > > Superclass;

  typedef SmartPointer< Self >       Pointer;
  typedef SmartPointer< const Self > ConstPointer;

  itkNewMacro(Self);

  itkTypeMacro(TernaryOperatorImageFilter,
               TernaryFunctorImageFilter);

protected:
  TernaryOperatorImageFilter() {}
  virtual ~TernaryOperatorImageFilter() {}

private:
  ITK_DISALLOW_COPY_AND_ASSIGN(TernaryOperatorImageFilter);
};
} // end namespace itk

#endif