/*=========================================================================
  Program:   vv                     http://www.creatis.insa-lyon.fr/rio/vv

  Authors belong to: 
  - University of LYON              http://www.universite-lyon.fr/
  - Léon Bérard cancer center       http://oncora1.lyon.fnclcc.fr
  - CREATIS CNRS laboratory         http://www.creatis.insa-lyon.fr

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

  It is distributed under dual licence

  - BSD        See included LICENSE.txt file
  - CeCILL-B   http://www.cecill.info/licences/Licence_CeCILL-B_V1-en.html
======================================================================-====*/
#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