text: /*
   * Copyright (C) 2005-2019 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 otbExtractROI_hxx
  #define otbExtractROI_hxx
  
  #include "otbExtractROI.h"
  #include "itkImageRegionIterator.h"
  #include "itkProgressReporter.h"
  
  namespace otb
  {
  
  /**
   *
   */
  template <class TInputPixel, class TOutputPixel>
  ExtractROI<TInputPixel, TOutputPixel>
  ::ExtractROI() //: ExtractROIBase< itk::Image<TInputPixel, VImageDimension> , itk::Image<TOutputPixel, VImageDimension> >()
  {
  }
  
  /**
   *
   */
  template <class TInputPixel, class TOutputPixel>
  void
  ExtractROI<TInputPixel, TOutputPixel>
  ::PrintSelf(std::ostream& os, itk::Indent indent) const
  {
    Superclass::PrintSelf(os, indent);
  }
  
  /**
   * ExtractROI can produce an image which is a different resolution
   * than its input image.  As such, ExtractROI needs to provide an
   * implementation for GenerateOutputInformation() in order to inform
   * the pipeline execution model.  The original documentation of this
   * method is below.
   *
   * \sa ProcessObject::GenerateOutputInformaton()
   */
  template <class TInputPixel, class TOutputPixel>
  void
  ExtractROI<TInputPixel, TOutputPixel>
  ::GenerateOutputInformation()
  {
    // Call to the base class method
    Superclass::GenerateOutputInformation();
  }
  
  template <class TInputPixel, class TOutputPixel>
  void
  ExtractROI<TInputPixel, TOutputPixel>
  ::ThreadedGenerateData(const OutputImageRegionType& outputRegionForThread,
                         itk::ThreadIdType threadId)
  {
    itkDebugMacro(<< "Actually executing");
  
    // Get the input and output pointers
    typename Superclass::InputImageConstPointer inputPtr = this->GetInput();
    typename Superclass::OutputImagePointer     outputPtr = this->GetOutput();
  
    // support progress methods/callbacks
    itk::ProgressReporter progress(this, threadId, outputRegionForThread.GetNumberOfPixels());
  
    // Define the portion of the input to walk for this thread
    InputImageRegionType inputRegionForThread;
    this->CallCopyOutputRegionToInputRegion(inputRegionForThread, outputRegionForThread);
  
    // Define the iterators.
    typedef itk::ImageRegionIterator<OutputImageType>     OutputIterator;
    typedef itk::ImageRegionConstIterator<InputImageType> InputIterator;
  
    OutputIterator outIt(outputPtr, outputRegionForThread);
    InputIterator inIt(inputPtr, inputRegionForThread);
  
    // walk the output region, and sample the input image
    while (!outIt.IsAtEnd())
      {
      // copy the input pixel to the output
      outIt.Set(inIt.Get());
      ++outIt;
      ++inIt;
      progress.CompletedPixel();
      }
  }
  
  } // end namespace otb
  
  #endif
  