itkPointsLocator.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 __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 TPointIdentifier = IdentifierType, int VPointDimension = 3,
  typename TCoordRep = float, typename TPointsContainer =
  VectorContainer<TPointIdentifier, Point<TCoordRep, VPointDimension> >
  >
class ITK_EXPORT PointsLocator : public Object
{
public:
  typedef PointsLocator               Self;
  typedef Object                      Superclass;
  typedef SmartPointer<Self>          Pointer;
  typedef SmartPointer<const Self>    ConstPointer;

  itkNewMacro( Self );

  itkTypeMacro( PointsLocator, Object );

  typedef TPointIdentifier                       PointIdentifier;
  typedef TCoordRep                              CoordRepType;
  typedef TPointsContainer                       PointsContainer;
  typedef typename PointsContainer::Pointer      PointsContainerPointer;
  typedef typename PointsContainer::ConstPointer PointsContainerConstPointer;

  typedef Point<CoordRepType, VPointDimension>   PointType;

  itkStaticConstMacro( PointDimension, unsigned int,  VPointDimension );

  typedef typename PointsContainer::ConstIterator PointsContainerConstIterator;
  typedef typename PointsContainer::Iterator      PointsContainerIterator;

  typedef Statistics::VectorContainerToListSampleAdaptor
    <PointsContainer>                                   SampleAdaptorType;
  typedef typename SampleAdaptorType::Pointer           SampleAdaptorPointer;

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

  itkSetObjectMacro( Points, PointsContainer );

  itkGetConstObjectMacro( 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();
  virtual void PrintSelf(std::ostream& os, Indent indent) const;

private:
  PointsLocator( const Self& ); //purposely not implemented
  void operator=( const Self& ); //purposely not implemented

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

} // end namespace itk

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

#endif