otbUnaryFunctorWithIndexWithOutputSizeImageFilter.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 otbUnaryFunctorWithIndexWithOutputSizeImageFilter_h
#define otbUnaryFunctorWithIndexWithOutputSizeImageFilter_h
 
#include "itkImageToImageFilter.h"
#include "itkImageRegionConstIteratorWithIndex.h"
#include "itkProcessObject.h"
 
namespace otb
{
template <class TInputImage, class TOutputImage, class TFunction>
class ITK_EXPORT UnaryFunctorWithIndexWithOutputSizeImageFilter : public itk::ImageToImageFilter<TInputImage, TOutputImage>
{
public:
  typedef UnaryFunctorWithIndexWithOutputSizeImageFilter Self;
  typedef itk::ImageToImageFilter<TInputImage, TOutputImage> Superclass;
  typedef itk::SmartPointer<Self>       Pointer;
  typedef itk::SmartPointer<const Self> ConstPointer;
 
  itkNewMacro(Self);
 
  itkTypeMacro(UnaryFunctorWithIndexWithOutputSizeImageFilter, ImageToImageFilter);
 
  typedef TFunction                             FunctorType;
  typedef typename Superclass::InputImageType   InputImageType;
  typedef typename InputImageType::ConstPointer InputImagePointer;
  typedef typename InputImageType::RegionType   InputImageRegionType;
  typedef typename InputImageType::PixelType    InputImagePixelType;
  typedef typename InputImageType::SizeType     InputImageSizeType;
  typedef typename InputImageType::IndexType    InputImageIndexType;
  typedef typename Superclass::OutputImageType  OutputImageType;
  typedef typename OutputImageType::Pointer     OutputImagePointer;
  typedef typename OutputImageType::RegionType  OutputImageRegionType;
  typedef typename OutputImageType::PixelType   OutputImagePixelType;
 
  typedef itk::ProcessObject ProcessObjectType;
 
  FunctorType& GetFunctor()
  {
    this->Modified();
    return m_Functor;
  }
 
  const FunctorType& GetFunctor() const
  {
    return m_Functor;
  }
 
  void SetFunctor(const FunctorType& functor)
  {
    m_Functor = functor;
    this->Modified();
  }
 
  typedef itk::ImageRegionConstIteratorWithIndex<TInputImage> IteratorType;
 
protected:
  UnaryFunctorWithIndexWithOutputSizeImageFilter();
 
  ~UnaryFunctorWithIndexWithOutputSizeImageFilter() override
  {
  }
 
  void ThreadedGenerateData(const OutputImageRegionType& outputRegionForThread, itk::ThreadIdType threadId) override;
 
  void GenerateInputRequestedRegion(void) override;
 
  void GenerateOutputInformation() override
  {
    Superclass::GenerateOutputInformation();
    typename Superclass::OutputImagePointer outputPtr = this->GetOutput();
    outputPtr->SetNumberOfComponentsPerPixel( // propagate vector length info
        this->GetFunctor().GetOutputSize());
  }
 
private:
  UnaryFunctorWithIndexWithOutputSizeImageFilter(const Self&) = delete;
  void operator=(const Self&) = delete;
 
  FunctorType m_Functor;
};
 
} // namespace otb
 
#ifndef OTB_MANUAL_INSTANTIATION
#include "otbUnaryFunctorWithIndexWithOutputSizeImageFilter.hxx"
#endif
 
#endif