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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 itkAtan2ImageFilter_h
#define itkAtan2ImageFilter_h
#include "itkBinaryGeneratorImageFilter.h"
#include "itkMath.h"
namespace itk
{
namespace Functor
{
/**
* \class Atan2
* \brief
* \ingroup ITKImageIntensity
*/
template <typename TInput1, typename TInput2, typename TOutput>
class Atan2
{
public:
bool
operator==(const Atan2 &) const
{
return true;
}
ITK_UNEQUAL_OPERATOR_MEMBER_FUNCTION(Atan2);
inline TOutput
operator()(const TInput1 & A, const TInput2 & B) const
{
return static_cast<TOutput>(std::atan2(static_cast<double>(A), static_cast<double>(B)));
}
};
} // namespace Functor
/** \class Atan2ImageFilter
* \brief Computes two argument inverse tangent.
*
* The first argument to the atan function is provided by a pixel
* in the first input image (SetInput1()) and the corresponding
* pixel in the second input image (SetInput2()) is used as the second
* argument.
*
* This class is templated over the types of the two
* input images and the type of the output image.
* Numeric conversions (castings) are done by the C++ defaults.
*
* Both pixel input types are cast to \c double in order to be
* used as parameters of \c std::atan2(). The resulting \c double value
* is cast to the output pixel type.
*
* \ingroup IntensityImageFilters
* \ingroup MultiThreaded
* \ingroup ITKImageIntensity
*
* \sphinx
* \sphinxexample{Filtering/ImageIntensity/ApplyAtanImageFilter,Apply Atan Image Filter}
* \endsphinx
*/
template <typename TInputImage1, typename TInputImage2, typename TOutputImage>
class ITK_TEMPLATE_EXPORT Atan2ImageFilter : public BinaryGeneratorImageFilter<TInputImage1, TInputImage2, TOutputImage>
{
public:
ITK_DISALLOW_COPY_AND_MOVE(Atan2ImageFilter);
/** Standard class type aliases. */
using Self = Atan2ImageFilter;
using Superclass = BinaryGeneratorImageFilter<TInputImage1, TInputImage2, TOutputImage>;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
using FunctorType = Functor::
Atan2<typename TInputImage1::PixelType, typename TInputImage2::PixelType, typename TOutputImage::PixelType>;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** \see LightObject::GetNameOfClass() */
itkOverrideGetNameOfClassMacro(Atan2ImageFilter);
#ifdef ITK_USE_CONCEPT_CHECKING
// Begin concept checking
itkConceptMacro(Input1ConvertibleToDoubleCheck, (Concept::Convertible<typename TInputImage1::PixelType, double>));
itkConceptMacro(Input2ConvertibleToDoubleCheck, (Concept::Convertible<typename TInputImage2::PixelType, double>));
itkConceptMacro(DoubleConvertibleToOutputCheck, (Concept::Convertible<double, typename TOutputImage::PixelType>));
// End concept checking
#endif
protected:
Atan2ImageFilter()
{
#if !defined(ITK_WRAPPING_PARSER)
Superclass::SetFunctor(FunctorType());
#endif // !defined( ITK_WRAPPING_PARSER )
}
~Atan2ImageFilter() override = default;
};
} // end namespace itk
#endif
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