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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkImageToSpatialObjectMetric.txx,v $
  Language:  C++
  Date:      $Date: 2006/04/18 14:22:51 $
  Version:   $Revision: 1.4 $

  Copyright (c) Insight Software Consortium. All rights reserved.
  See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm 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 _ImageToSpatialObjectMetric_txx
#define _ImageToSpatialObjectMetric_txx

#include "itkImageToSpatialObjectMetric.h"

namespace itk
{

/** Constructor */
template < class TFixedImage, class TMovingSpatialObject> 
ImageToSpatialObjectMetric<TFixedImage,TMovingSpatialObject>
::ImageToSpatialObjectMetric()
{

  m_FixedImage          = 0; // has to be provided by the user.
  m_MovingSpatialObject = 0; // has to be provided by the user.
  m_Transform           = 0; // has to be provided by the user.
  m_Interpolator        = 0; // has to be provided by the user.

}


/*
 * Initialize
 */

template < class TFixedImage, class TMovingSpatialObject> 
void
ImageToSpatialObjectMetric<TFixedImage,TMovingSpatialObject>
::Initialize(void) throw ( ExceptionObject )
{

  if( !m_Transform )
    {
    itkExceptionMacro(<<"Transform is not present");
    }

  if( !m_Interpolator )
    {
    itkExceptionMacro(<<"Interpolator is not present");
    }

  if( !m_MovingSpatialObject )
    {
    itkExceptionMacro(<<"MovingSpatialObject is not present");
    }

  if( !m_FixedImage )
    {
    itkExceptionMacro(<<"FixedImage is not present");
    }

  // If the image is provided by a source, update the source.
  if( m_FixedImage->GetSource() )
    {
    m_FixedImage->GetSource()->Update();
    }

  m_Interpolator->SetInputImage( m_FixedImage );
 

  // If there are any observers on the metric, call them to give the
  // user code a chance to set parameters on the metric
  this->InvokeEvent( InitializeEvent() );
}
 


/** PrintSelf */
template < class TFixedImage, class TMovingSpatialObject> 
void
ImageToSpatialObjectMetric<TFixedImage,TMovingSpatialObject>
::PrintSelf(std::ostream& os, Indent indent) const
{
  Superclass::PrintSelf( os, indent );
  os << indent << "Moving Spatial Object: " << m_MovingSpatialObject.GetPointer()  << std::endl;
  os << indent << "Fixed  Image: " << m_FixedImage.GetPointer()   << std::endl;
  os << indent << "Transform:    " << m_Transform.GetPointer()    << std::endl;
  os << indent << "Interpolator: " << m_Interpolator.GetPointer() << std::endl;
  os << indent << "Last Transform parameters = " << m_LastTransformParameters << std::endl;
}


} // end namespace itk


#endif
