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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
{
/** \class Cast
*
* \deprecated This functor is no longer used by the CastImageFilter.
* \ingroup ITKImageFilterBase
*/
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
/** \class CastImageFilter
*
* \brief Casts input pixels to output pixel type.
*
* This filter is templated over the input image type
* and the output image type.
*
* A typical use is to cast a
\code
itk::Image<type1, dim>
\endcode
* to a
\code
itk::Image<type2, dim>
\endcode
*
* This filter can also be used to cast a
\code
itk::VectorImage<type1, dim>
\endcode
* to a
\code
itk::VectorImage<type2, dim>
\endcode
*
* If you need to perform a dimensionality reduction, you may want
* to use the ExtractImageFilter instead of the CastImageFilter.
*
* \ingroup IntensityImageFilters MultiThreaded
* \sa UnaryFunctorImageFilter
* \sa ExtractImageFilter
* \ingroup ITKImageFilterBase
*
* \sphinx
* \sphinxexample{Filtering/ImageFilterBase/CastAnImageToAnotherType,Cast An Image To Another Type}
* \endsphinx
*/
template <typename TInputImage, typename TOutputImage>
class ITK_TEMPLATE_EXPORT CastImageFilter : public InPlaceImageFilter<TInputImage, TOutputImage>
{
public:
ITK_DISALLOW_COPY_AND_MOVE(CastImageFilter);
/** Standard class type aliases. */
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;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** \see LightObject::GetNameOfClass() */
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
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