itkConstrainedRegionBasedLevelSetFunctionSharedData.h

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 *  Copyright Insight Software Consortium
 *
 *  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.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 itkConstrainedRegionBasedLevelSetFunctionSharedData_h
#define itkConstrainedRegionBasedLevelSetFunctionSharedData_h

#include "itkRegionBasedLevelSetFunctionSharedData.h"

namespace itk
{
template< typename TInputImage, typename TFeatureImage, typename TSingleData >
class ConstrainedRegionBasedLevelSetFunctionSharedData:
  public RegionBasedLevelSetFunctionSharedData< TInputImage, TFeatureImage, TSingleData >
{
public:

  using Self = ConstrainedRegionBasedLevelSetFunctionSharedData;
  using Superclass =
      RegionBasedLevelSetFunctionSharedData< TInputImage, TFeatureImage, TSingleData >;
  using Pointer = SmartPointer< Self >;
  using ConstPointer = SmartPointer< const Self >;

  static constexpr unsigned int ImageDimension = TFeatureImage::ImageDimension;

  itkNewMacro(Self);

  itkTypeMacro(ConstrainedRegionBasedLevelSetFunctionSharedData, RegionBasedLevelSetFunctionSharedData);

  using InputImageType = TInputImage;
  using InputImagePointer = typename Superclass::InputImagePointer;
  using InputImageConstPointer = typename Superclass::InputImageConstPointer;
  using InputPixelType = typename Superclass::InputPixelType;
  using InputRegionType = typename Superclass::InputRegionType;
  using InputSizeType = typename Superclass::InputSizeType;
  using InputSizeValueType = typename Superclass::InputSizeValueType;
  using InputSpacingType = typename Superclass::InputSpacingType;
  using InputIndexType = typename Superclass::InputIndexType;
  using InputIndexValueType = typename Superclass::InputIndexValueType;
  using InputPointType = typename Superclass::InputPointType;

  using FeatureImageType = TFeatureImage;
  using FeatureImagePointer = typename Superclass::FeatureImagePointer;
  using FeatureImageConstPointer = typename Superclass::FeatureImageConstPointer;
  using FeaturePixelType = typename Superclass::FeaturePixelType;
  using FeatureRegionType = typename Superclass::FeatureRegionType;
  using FeatureSizeType = typename Superclass::FeatureSizeType;
  using FeatureSizeValueType = typename Superclass::FeatureSizeValueType;
  using FeatureSpacingType = typename Superclass::FeatureSpacingType;
  using FeatureIndexType = typename Superclass::FeatureIndexType;
  using FeaturePointType = typename Superclass::FeaturePointType;

  using ListPixelType = typename Superclass::ListPixelType;
  using ListImageType = typename Superclass::ListImageType;
  using ListImagePointer = typename Superclass::ListImagePointer;
  using ListImageConstPointer = typename Superclass::ListImageConstPointer;
  using ListRegionType = typename Superclass::ListRegionType;
  using ListSizeType = typename Superclass::ListSizeType;
  using ListSizeValueType = typename Superclass::ListSizeValueType;
  using ListSpacingType = typename Superclass::ListSpacingType;
  using ListIndexType = typename Superclass::ListIndexType;
  using ListIndexValueType = typename Superclass::ListIndexValueType;
  using ListPointType = typename Superclass::ListPointType;
  using ListIteratorType = typename Superclass::ListIteratorType;

  using CentroidVectorType = typename Superclass::CentroidVectorType;
  using SampleType = typename Superclass::SampleType;
  using TreeGeneratorType = typename Superclass::TreeGeneratorType;
  using TreePointer = typename Superclass::TreePointer;
  using TreeType = typename Superclass::TreeType;
  using KdTreePointer = typename Superclass::KdTreePointer;

  using LevelSetDataType = TSingleData;
  using LevelSetDataPointer = typename Superclass::LevelSetDataPointer;
  using LevelSetDataPointerVector = typename Superclass::LevelSetDataPointerVector;
  using LevelSetDataPointerVectorIterator = typename Superclass::LevelSetDataPointerVectorIterator;

  void PopulateListImage() override
  {
    ListSpacingType spacing = this->m_NearestNeighborListImage->GetSpacing();

    ListRegionType region = this->m_NearestNeighborListImage->GetLargestPossibleRegion();

    ListIteratorType lIt(this->m_NearestNeighborListImage, region);

    if ( this->m_KdTree.IsNotNull() )
      {
      for ( lIt.GoToBegin(); !lIt.IsAtEnd(); ++lIt )
        {
        ListIndexType ind = lIt.GetIndex();

        float queryPoint[ImageDimension];
        for ( unsigned int i = 0; i < ImageDimension; i++ )
          {
          queryPoint[i] = ind[i] * spacing[i];
          }

        typename TreeType::InstanceIdentifierVectorType neighbors;
        this->m_KdTree->Search(queryPoint, this->m_NumberOfNeighbors, neighbors);

        ListPixelType L;
        for ( unsigned int i = 0; i < this->m_NumberOfNeighbors; i++ )
          {
          if ( this->m_LevelSetDataPointerVector[i]->VerifyInsideRegion(ind) )
            {
            L.push_back(neighbors[i]);
            }
          }
        lIt.Set(L);
        }
      }
    else
      {
      for ( lIt.GoToBegin(); !lIt.IsAtEnd(); ++lIt )
        {
        ListIndexType ind = lIt.GetIndex();
        ListPixelType L;
        for ( unsigned int i = 0; i < this->m_FunctionCount; i++ )
          {
          if ( this->m_LevelSetDataPointerVector[i]->VerifyInsideRegion(ind) )
            {
            L.push_back(i);
            }
          }
        lIt.Set(L);
        }
      }
  }

protected:
  ConstrainedRegionBasedLevelSetFunctionSharedData():Superclass(){}
  ~ConstrainedRegionBasedLevelSetFunctionSharedData() override{}

private:
  ConstrainedRegionBasedLevelSetFunctionSharedData(const Self &); //purposely
                                                                  // not
                                                                  // implemented
  void operator=(const Self &);                                   //purposely
                                                                  // not
                                                                  // implemented
};
} //end namespace itk

#endif