itkPointsLocator.h

Go to the documentation of this file.

/*=========================================================================
 *
 *  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 itkPointsLocator_h
#define itkPointsLocator_h

#include "itkObject.h"

#include "itkPoint.h"
#include "itkIntTypes.h"
#include "itkKdTree.h"
#include "itkKdTreeGenerator.h"
#include "itkVectorContainer.h"
#include "itkVectorContainerToListSampleAdaptor.h"

namespace itk
{

template<
  typename TPointsContainer = VectorContainer< IdentifierType, Point< float, 3 > >
  >
class ITK_TEMPLATE_EXPORT PointsLocator : public Object
{
public:
  ITK_DISALLOW_COPY_AND_ASSIGN(PointsLocator);

  using Self = PointsLocator;
  using Superclass = Object;
  using Pointer = SmartPointer<Self>;
  using ConstPointer = SmartPointer<const Self>;

  itkNewMacro( Self );

  itkTypeMacro( PointsLocator, Object );

  using PointsContainer = TPointsContainer;
  using PointsContainerPointer = typename PointsContainer::Pointer;
  using PointsContainerConstPointer = typename PointsContainer::ConstPointer;
  using PointIdentifier = typename PointsContainer::ElementIdentifier;
  using PointType = typename PointsContainer::Element;

  static constexpr unsigned int PointDimension = PointType::PointDimension;

  using PointsContainerConstIterator = typename PointsContainer::ConstIterator;
  using PointsContainerIterator = typename PointsContainer::Iterator;

  using SampleAdaptorType = Statistics::VectorContainerToListSampleAdaptor<PointsContainer>;
  using SampleAdaptorPointer = typename SampleAdaptorType::Pointer;

  using TreeGeneratorType = Statistics::KdTreeGenerator<SampleAdaptorType>;
  using TreeGeneratorPointer = typename TreeGeneratorType::Pointer;
  using TreeType = typename TreeGeneratorType::KdTreeType;
  using TreeConstPointer = typename TreeType::ConstPointer;
  using NeighborsIdentifierType = typename TreeType::InstanceIdentifierVectorType;

  itkSetObjectMacro( Points, PointsContainer );

  itkGetModifiableObjectMacro(Points, PointsContainer );

  void Initialize();

  PointIdentifier FindClosestPoint( const PointType &query ) const;

  void Search( const PointType &, unsigned int, NeighborsIdentifierType & )
    const;

  void FindClosestNPoints( const PointType &, unsigned int,
    NeighborsIdentifierType & ) const;

  void Search( const PointType &, double, NeighborsIdentifierType & ) const;

  void FindPointsWithinRadius( const PointType &, double,
    NeighborsIdentifierType & ) const;

protected:
  PointsLocator();
  ~PointsLocator() override = default;
  void PrintSelf(std::ostream& os, Indent indent) const override;

private:
  PointsContainerPointer   m_Points;
  SampleAdaptorPointer     m_SampleAdaptor;
  TreeGeneratorPointer     m_KdTreeGenerator;
  TreeConstPointer         m_Tree;
};

} // end namespace itk

#ifndef ITK_MANUAL_INSTANTIATION
#include "itkPointsLocator.hxx"
#endif

#endif