/*# ---------------------------------------------------------------------
#
# Copyright (c) CREATIS (Centre de Recherche en Acquisition et Traitement de l'Image
#                        pour la Sant�)
# Authors : Eduardo Davila, Frederic Cervenansky, Claire Mouton
# Previous Authors : Laurent Guigues, Jean-Pierre Roux
# CreaTools website : www.creatis.insa-lyon.fr/site/fr/creatools_accueil
#
#  This software is governed by the CeCILL-B license under French law and
#  abiding by the rules of distribution of free software. You can  use,
#  modify and/ or redistribute the software under the terms of the CeCILL-B
#  license as circulated by CEA, CNRS and INRIA at the following URL
#  http://www.cecill.info/licences/Licence_CeCILL-B_V1-en.html
#  or in the file LICENSE.txt.
#
#  As a counterpart to the access to the source code and  rights to copy,
#  modify and redistribute granted by the license, users are provided only
#  with a limited warranty  and the software's author,  the holder of the
#  economic rights,  and the successive licensors  have only  limited
#  liability.
#
#  The fact that you are presently reading this means that you have had
#  knowledge of the CeCILL-B license and that you accept its terms.
# ------------------------------------------------------------------------ */

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkVTKImageToImageFilter.h,v $
  Language:  C++
  Date:      $Date: 2012/11/15 15:49:54 $
  Version:   $Revision: 1.2 $

  Copyright (c) 2002 Insight 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 __itkVTKImageToImageFilter_h
#define __itkVTKImageToImageFilter_h

#include "itkVTKImageImport.h"
#include "vtkImageExport.h"
#include "vtkImageData.h"

#ifndef vtkFloatingPointType
#define vtkFloatingPointType float
#endif

namespace itk
{
  
/** \class VTKImageToImageFilter
 * \brief Converts a VTK image into an ITK image and plugs a 
 *  vtk data pipeline to an ITK datapipeline.   
 *
 *  This class puts together an itkVTKImageImporter and a vtkImageExporter.
 *  It takes care of the details related to the connection of ITK and VTK
 *  pipelines. The User will perceive this filter as an adaptor to which
 *  a vtkImage can be plugged as input and an itk::Image is produced as 
 *  output.
 * 
 * \ingroup   ImageFilters     
 */
template <class TOutputImage >
class ITK_EXPORT VTKImageToImageFilter : public ProcessObject
{
public:
  /** Standard class typedefs. */
  typedef VTKImageToImageFilter       Self;
  typedef ProcessObject             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(VTKImageToImageFilter, ProcessObject);

  /** Some typedefs. */
  typedef TOutputImage OutputImageType;
  typedef typename    OutputImageType::ConstPointer    OutputImagePointer;
  typedef VTKImageImport< OutputImageType >   ImporterFilterType; 
  typedef typename ImporterFilterType::Pointer         ImporterFilterPointer;
 
  /** Get the output in the form of a vtkImage. 
      This call is delegated to the internal vtkImageImporter filter  */
  const OutputImageType *  GetOutput() const;

  /** Set the input in the form of a vtkImageData */
  void SetInput( vtkImageData * );

  /** Return the internal VTK image exporter filter.
      This is intended to facilitate users the access 
      to methods in the exporter */
  vtkImageExport * GetExporter() const;

  /** Return the internal ITK image importer filter.
      This is intended to facilitate users the access 
      to methods in the importer */
  ImporterFilterType * GetImporter() const;
  
  /** This call delegate the update to the importer */
  void Update();
  
protected:
  VTKImageToImageFilter(); 
  virtual ~VTKImageToImageFilter(); 

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

  ImporterFilterPointer       m_Importer;
  vtkImageExport            * m_Exporter;

};

} // end namespace itk

#ifndef ITK_MANUAL_INSTANTIATION
#include "itkVTKImageToImageFilter.txx"
#endif

#endif