itkCastImageFilter.h

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/*=========================================================================
 *
 *  Copyright NumFOCUS
 *
 *  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
 *
 *         https://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 itkCastImageFilter_h
#define itkCastImageFilter_h
 
#include "itkUnaryFunctorImageFilter.h"
#include "itkProgressReporter.h"
#include "itkMetaProgrammingLibrary.h"
 
#include <type_traits>
 
namespace itk
{
#if !defined(ITK_LEGACY_REMOVE)
namespace Functor
{
 
template <typename TInput, typename TOutput>
class ITK_TEMPLATE_EXPORT Cast
{
public:
  Cast() = default;
  virtual ~Cast() = default;
  bool
  operator==(const Cast &) const
  {
    return true;
  }
 
  ITK_UNEQUAL_OPERATOR_MEMBER_FUNCTION(Cast);
 
  inline TOutput
  operator()(const TInput & A) const
  {
    return static_cast<TOutput>(A);
  }
};
} // namespace Functor
#endif
 

template <typename TInputImage, typename TOutputImage>
class ITK_TEMPLATE_EXPORT CastImageFilter : public InPlaceImageFilter<TInputImage, TOutputImage>
{
public:
  ITK_DISALLOW_COPY_AND_MOVE(CastImageFilter);

  using Self = CastImageFilter;
 
  using Superclass = InPlaceImageFilter<TInputImage, TOutputImage>;
 
  using Pointer = SmartPointer<Self>;
  using ConstPointer = SmartPointer<const Self>;
 
 
  using typename Superclass::OutputImageRegionType;
 
  using InputPixelType = typename TInputImage::PixelType;
  using OutputPixelType = typename TOutputImage::PixelType;

  itkNewMacro(Self);

  itkOverrideGetNameOfClassMacro(CastImageFilter);
 
protected:
  CastImageFilter();
  ~CastImageFilter() override = default;
 
  void
  GenerateOutputInformation() override;
 
  void
  GenerateData() override;
 
  void
  DynamicThreadedGenerateData(const OutputImageRegionType & outputRegionForThread) override;
 
  template <typename TInputPixelType,
            typename TOutputPixelType,
            std::enable_if_t<mpl::is_static_castable<TInputPixelType, TOutputPixelType>::value, int> = 0>
  void
  DynamicThreadedGenerateDataDispatched(const OutputImageRegionType & outputRegionForThread);
 
  template <typename TInputPixelType,
            typename TOutputPixelType,
            std::enable_if_t<!mpl::is_static_castable<TInputPixelType, TOutputPixelType>::value, int> = 0>
  void
  DynamicThreadedGenerateDataDispatched(const OutputImageRegionType & outputRegionForThread);
 
private:
};
} // end namespace itk
 
#ifndef ITK_MANUAL_INSTANTIATION
#  include "itkCastImageFilter.hxx"
#endif
 
#endif