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/*=========================================================================

  Program:   ORFEO Toolbox
  Language:  C++
  Date:      $Date$
  Version:   $Revision$


  Copyright (c) Centre National d'Etudes Spatiales. All rights reserved.
  See OTBCopyright.txt for details.


     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notices for more information.

=========================================================================*/
#ifndef otbPointSetFunction_h
#define otbPointSetFunction_h

#include "itkSpatialFunction.h"
#include "itkProcessObject.h"

namespace otb
{

/**
 * \class PointSetFunction
 * \brief Calculate the density in the neighborhood of a pixel
 *
 * \ingroup SpatialFunctions
 *
 * \ingroup OTBPointSet
 */
template <class TPointSet, class TOutput>
class ITK_EXPORT PointSetFunction :
  public itk::SpatialFunction<TOutput, 2 /* TODO : change 2 by PointType::PointDimension*/,
      typename TPointSet::PointType>
{
public:
  /** Standard class typedefs. */
  typedef PointSetFunction                                                 Self;
  typedef itk::SpatialFunction<TOutput, 2,  typename TPointSet::PointType> Superclass;

  /** Run-time type information (and related methods). */
  itkTypeMacro(PointSetFunction, itk::SpatialFunction);

  /** PointSet Type typedef Support*/
  typedef TPointSet                            PointSetType;
  typedef typename  PointSetType::ConstPointer PointSetPointerType;

  /** TOutput typedef suppoty*/
  typedef TOutput OutputType;

  /** Set the input image (reimplemented since we need to set the detector input) */
  itkGetConstObjectMacro(PointSet, PointSetType);

  void SetPointSet(PointSetType * PointSet)
  {
    m_PointSet = PointSet;
  }

  /** SetPointSet() to maintain the const correctness of the pointset*/
  void SetPointSet(PointSetPointerType PointSet)
  {
    m_PointSet = PointSet;
  }

protected:
  PointSetFunction();
  ~PointSetFunction() ITK_OVERRIDE {}

  void PrintSelf(std::ostream& os, itk::Indent indent) const ITK_OVERRIDE;

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

  PointSetPointerType m_PointSet;

};

} // end namespace otb

#ifndef OTB_MANUAL_INSTANTIATION
#include "otbPointSetFunction.txx"
#endif

#endif