/*=========================================================================
 *
 *  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 itkScalarImageToHistogramGenerator_hxx
#define itkScalarImageToHistogramGenerator_hxx

#include "itkScalarImageToHistogramGenerator.h"

namespace itk
{
namespace Statistics
{
template< typename TImage >
ScalarImageToHistogramGenerator< TImage >
::ScalarImageToHistogramGenerator()
{
  m_ImageToListSampleAdaptor = AdaptorType::New();
  m_HistogramGenerator = GeneratorType::New();
  m_HistogramGenerator->SetInput(m_ImageToListSampleAdaptor);
}

template< typename TImage >
void
ScalarImageToHistogramGenerator< TImage >
::SetInput(const ImageType *image)
{
  m_ImageToListSampleAdaptor->SetImage(image);
}

template< typename TImage >
const typename ScalarImageToHistogramGenerator< TImage >::HistogramType *
ScalarImageToHistogramGenerator< TImage >
::GetOutput() const
{
  return m_HistogramGenerator->GetOutput();
}

template< typename TImage >
void
ScalarImageToHistogramGenerator< TImage >
::Compute()
{
  m_HistogramGenerator->Update();
}

template< typename TImage >
void
ScalarImageToHistogramGenerator< TImage >
::SetNumberOfBins(unsigned int numberOfBins)
{
  typename HistogramType::SizeType size;
  size.SetSize(1);
  size.Fill(numberOfBins);
  m_HistogramGenerator->SetHistogramSize(size);
}

template< typename TImage >
void
ScalarImageToHistogramGenerator< TImage >
::SetHistogramMin(RealPixelType minimumValue)
{
  using MeasurementVectorType = typename GeneratorType::HistogramMeasurementVectorType;
  MeasurementVectorType minVector;
  NumericTraits<MeasurementVectorType>::SetLength(minVector, 1);
  minVector[0] = minimumValue;
  m_HistogramGenerator->SetHistogramBinMinimum(minVector);
}

template< typename TImage >
void
ScalarImageToHistogramGenerator< TImage >
::SetHistogramMax(RealPixelType maximumValue)
{
  using MeasurementVectorType = typename GeneratorType::HistogramMeasurementVectorType;
  MeasurementVectorType maxVector;
  NumericTraits<MeasurementVectorType>::SetLength(maxVector, 1);
  maxVector[0] = maximumValue;
  m_HistogramGenerator->SetHistogramBinMaximum(maxVector);
}

template< typename TImage >
void
ScalarImageToHistogramGenerator< TImage >
::SetAutoHistogramMinimumMaximum(bool autoOnOff)
{
  m_HistogramGenerator->SetAutoMinimumMaximum(autoOnOff);
}

template< typename TImage >
void
ScalarImageToHistogramGenerator< TImage >
::SetMarginalScale(double marginalScale)
{
  m_HistogramGenerator->SetMarginalScale(marginalScale);
}

template< typename TImage >
void
ScalarImageToHistogramGenerator< TImage >
::PrintSelf(std::ostream & os, Indent indent) const
{
  Superclass::PrintSelf(os, indent);
  os << "ImageToListSample adaptor = " << m_ImageToListSampleAdaptor << std::endl;
  os << "HistogramGenerator = " << m_HistogramGenerator << std::endl;
}
} // end of namespace Statistics
} // end of namespace itk

#endif
