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

  Program:   Advanced Normalization Tools
  Module:    $RCSfile: antsJointHistogramParzenShapeAndOrientationListSampleFunction.h,v $
  Language:  C++
  Date:      $Date: $
  Version:   $Revision: $

  Copyright (c) ConsortiumOfANTS. All rights reserved.
  See accompanying COPYING.txt or
  http://sourceforge.net/projects/advants/files/ANTS/ANTSCopyright.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 __antsJointHistogramParzenShapeAndOrientationListSampleFunction_h
#define __antsJointHistogramParzenShapeAndOrientationListSampleFunction_h

#include "antsListSampleFunction.h"

#include "itkImage.h"
#include "itkBSplineInterpolateImageFunction.h"
#include "itkLinearInterpolateImageFunction.h"
namespace itk
{
namespace ants
{
namespace Statistics
{
/** \class JointHistogramParzenShapeAndOrientationListSampleFunction.h
 * \brief point set filter.
 */

template <class TListSample, class TOutput = double, class TCoordRep = double>
class JointHistogramParzenShapeAndOrientationListSampleFunction
  : public       ListSampleFunction<TListSample, TOutput, TCoordRep>
{
public:
  typedef JointHistogramParzenShapeAndOrientationListSampleFunction
    Self;
  typedef ListSampleFunction
    <TListSample, TOutput, TCoordRep>                      Superclass;
  typedef SmartPointer<Self>       Pointer;
  typedef SmartPointer<const Self> ConstPointer;

  /** Method for creation through the object factory. */
  itkNewMacro( Self );

  /** Run-time type information (and related methods). */
  itkTypeMacro( JointHistogramParzenShapeAndOrientationListSampleFunction,
                ListSampleFunction );

  typedef typename Superclass::InputListSampleType        InputListSampleType;
  typedef typename Superclass::InputMeasurementVectorType InputMeasurementVectorType;
  typedef typename Superclass::InputMeasurementType       InputMeasurementType;
  /** List sample typedef support. */
  typedef TListSample ListSampleType;

  /** Other typedef */
  typedef TOutput RealType;
  typedef TOutput OutputType;

  typedef Image<RealType, 2>                        JointHistogramImageType;
  typedef typename JointHistogramImageType::Pointer JointHistogramImagePointer;
  typedef Vector<RealType, 2>                       ThetaPsiType;

  typedef typename JointHistogramImageType::IndexType IndexType;
  typedef typename IndexType::IndexValueType          IndexValueType;
  typedef BSplineInterpolateImageFunction<JointHistogramImageType>
    InterpolatorType;
  typedef LinearInterpolateImageFunction<JointHistogramImageType>
    LInterpolatorType;
  typedef typename InterpolatorType::Pointer InterpolatorPointer;

  /** Helper functions */

  virtual void SetInputListSample( const InputListSampleType * ptr ) ITK_OVERRIDE;

  itkSetMacro( ShapeSigma, RealType );
  itkGetConstMacro( ShapeSigma, RealType );
  itkSetMacro( OrientationSigma, RealType );
  itkGetConstMacro( OrientationSigma, RealType );

  itkSetMacro( NumberOfShapeJointHistogramBins, unsigned int );
  itkGetConstMacro( NumberOfShapeJointHistogramBins, unsigned int );
  itkSetMacro( NumberOfOrientationJointHistogramBins, unsigned int );
  itkGetConstMacro( NumberOfOrientationJointHistogramBins, unsigned int );

  virtual TOutput Evaluate( const InputMeasurementVectorType & ) const ITK_OVERRIDE;

protected:
  JointHistogramParzenShapeAndOrientationListSampleFunction();
  virtual ~JointHistogramParzenShapeAndOrientationListSampleFunction();
  void PrintSelf( std::ostream& os, Indent indent ) const ITK_OVERRIDE;

  void GenerateData();

  void IncrementJointHistogramForShape( RealType, RealType );
  void IncrementJointHistogramForOrientation(
    RealType, RealType, RealType, unsigned int );
private:
  // purposely not implemented
  JointHistogramParzenShapeAndOrientationListSampleFunction( const Self & );
  void operator=( const Self & );

  unsigned int               m_NumberOfShapeJointHistogramBins;
  unsigned int               m_NumberOfOrientationJointHistogramBins;
  RealType                   m_ShapeSigma;
  RealType                   m_OrientationSigma;
  RealType                   m_MaximumEigenvalue1;
  RealType                   m_MaximumEigenvalue2;
  RealType                   m_MinimumEigenvalue1;
  RealType                   m_MinimumEigenvalue2;
  JointHistogramImagePointer m_JointHistogramImages[3];
  InterpolatorPointer        m_Interpolator;
  bool                       m_UseNearestNeighborIncrements;
};
} // end of namespace Statistics
} // end of namespace ants
} // end of namespace itk

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

#endif
