otbConcatenateScalarValueImageFilter.h

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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 otbConcatenateScalarValueImageFilter_h
#define otbConcatenateScalarValueImageFilter_h
 
#include "itkMacro.h"
#include "itkUnaryFunctorImageFilter.h"
 
namespace otb
{
 
namespace Functor
{
 
template <class TInput, class TOutput>
class ConcatenateScalarValueFunctor
{
public:
  typedef TInput  InputType;
  typedef TOutput OutputType;
 
  typedef typename InputType::ComponentType ComponentType;
 
  ConcatenateScalarValueFunctor() : m_ScalarValue(0)
  {
  }
  virtual ~ConcatenateScalarValueFunctor()
  {
  }
 
  const ComponentType& GetScalarValue()
  {
    return m_ScalarValue;
  }
 
  void SetScalarValue(const ComponentType& p)
  {
    m_ScalarValue = p;
  }
 
  bool operator!=(const ConcatenateScalarValueFunctor& itkNotUsed(other)) const
  {
    return false;
  }
 
  bool operator==(const ConcatenateScalarValueFunctor& other) const
  {
    return !(*this != other);
  }
 
  OutputType operator()(const InputType& in)
  {
    OutputType out(in.Size() + 1);
    for (unsigned int j = 0; j < in.Size(); ++j)
    {
      out[j] = in[j];
    }
    out[in.Size()] = m_ScalarValue;
    return out;
  }
 
private:
  ComponentType m_ScalarValue;
};
}
 
template <class TInputImage, class TOutputImage>
class ITK_EXPORT ConcatenateScalarValueImageFilter
    : public itk::UnaryFunctorImageFilter<TInputImage, TOutputImage,
                                          Functor::ConcatenateScalarValueFunctor<typename TInputImage::PixelType, typename TOutputImage::PixelType>>
{
public:
  typedef ConcatenateScalarValueImageFilter Self;
  typedef itk::UnaryFunctorImageFilter<TInputImage, TOutputImage,
                                       Functor::ConcatenateScalarValueFunctor<typename TInputImage::PixelType, typename TOutputImage::PixelType>>
                                        Superclass;
  typedef itk::SmartPointer<Self>       Pointer;
  typedef itk::SmartPointer<const Self> ConstPointer;
 
  typedef Functor::ConcatenateScalarValueFunctor<typename TInputImage::PixelType, typename TOutputImage::PixelType> FunctorType;
 
  itkNewMacro(Self);
 
  itkTypeMacro(ConcatenateScalarValueImageFilter, otb::UnaryFunctorImageFilter);
 
  typedef typename TInputImage::PixelType        InputPixelType;
  typedef typename InputPixelType::ComponentType InputComponentType;
  typedef typename TOutputImage::PixelType       OutputPixelType;
 
  const InputComponentType& GetScalarValue()
  {
    return this->GetFunctor().GetScalarValue();
  }
 
  void SetScalarValue(const InputComponentType& p)
  {
    this->GetFunctor().SetScalarValue(p);
    this->Modified();
  }
 
protected:
  ConcatenateScalarValueImageFilter();
 
  ~ConcatenateScalarValueImageFilter() override
  {
  }
 
  void PrintSelf(std::ostream& os, itk::Indent indent) const override;
 
  void GenerateOutputInformation() override;
 
private:
  ConcatenateScalarValueImageFilter(const Self&) = delete;
 
  void operator=(const Self&) = delete;
};
 
} // end namespace otb
 
#ifndef OTB_MANUAL_INSTANTIATION
#include "otbConcatenateScalarValueImageFilter.hxx"
#endif
 
#endif