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/*
* Copyright (C) 2005-2022 Centre National d'Etudes Spatiales (CNES)
*
* This file is part of Orfeo Toolbox
*
* https://www.orfeo-toolbox.org/
*
* 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
*
* 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 otbDefaultConvertPixelTraits_h
#define otbDefaultConvertPixelTraits_h
#include "itkDefaultConvertPixelTraits.h"
#include "OTBImageBaseExport.h"
namespace otb
{
template <typename PixelType>
class OTBImageBase_EXPORT_TEMPLATE DefaultConvertPixelTraits : public itk::DefaultConvertPixelTraits<PixelType>
{
public:
typedef itk::DefaultConvertPixelTraits<PixelType> SuperClass;
using typename SuperClass::ComponentType;
using SuperClass::SetNthComponent;
static void SetNthComponent(int, PixelType& pixel, const PixelType& v)
{
pixel = v;
}
};
template <typename T>
class DefaultConvertPixelTraits<::std::complex<T>> : public itk::DefaultConvertPixelTraits<::std::complex<T>>
{
public:
typedef itk::DefaultConvertPixelTraits<::std::complex<T>> SuperClass;
using typename SuperClass::TargetType;
using typename SuperClass::ComponentType;
using SuperClass::SetNthComponent;
static void SetNthComponent(int, TargetType& pixel, const TargetType& v)
{
pixel = v;
}
static TargetType GetNthComponent(int, const TargetType& pixel)
{
return pixel;
}
static ComponentType GetScalarValue(const TargetType& pixel)
{
/*
* This seems to be dead code, since the complex to scalar
* conversion is done by ConvertPixelBuffer
*
* Historically, it was returning std::norm, which causes
* compilation error on MacOSX 10.9.
* Now returns the equivalent implementation of std::norm.
*/
return static_cast<ComponentType>(pixel.real() * pixel.real() + pixel.imag() * pixel.imag());
}
};
} // end namespace
#endif
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