/*=========================================================================
 *
 *  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 itkPhysicalPointImageSource_hxx
#define itkPhysicalPointImageSource_hxx

#include "itkTotalProgressReporter.h"
#include "itkImageRegionIteratorWithIndex.h"

namespace itk
{
template <typename TOutputImage>
void
PhysicalPointImageSource<TOutputImage>::GenerateOutputInformation()
{
  // this methods is overloaded so that if the output image is a
  // VectorImage then the correct number of components are set.
  Superclass::GenerateOutputInformation();
  OutputImageType * output = this->GetOutput();

  if (!output)
  {
    return;
  }
  if (output->GetNumberOfComponentsPerPixel() != TOutputImage::ImageDimension)
  {
    output->SetNumberOfComponentsPerPixel(TOutputImage::ImageDimension);
  }
}

template <typename TOutputImage>
void
PhysicalPointImageSource<TOutputImage>::DynamicThreadedGenerateData(const RegionType & outputRegionForThread)
{
  TOutputImage * image = this->GetOutput(0);

  TotalProgressReporter progress(this, image->GetRequestedRegion().GetNumberOfPixels());

  ImageRegionIteratorWithIndex<TOutputImage> it(image, outputRegionForThread);
  PointType                                  pt;
  PixelType                                  px;
  NumericTraits<PixelType>::SetLength(px, TOutputImage::ImageDimension);

  for (; !it.IsAtEnd(); ++it)
  {
    image->TransformIndexToPhysicalPoint(it.GetIndex(), pt);

    for (unsigned int i = 0; i < TOutputImage::ImageDimension; ++i)
    {
      px[i] = static_cast<typename PixelType::ValueType>(pt[i]);
    }
    it.Set(px);
    progress.CompletedPixel();
  }
}
} // end namespace itk

#endif
