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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: VectorImageReadWrite.cxx,v $
  Language:  C++
  Date:      $Date: 2005/11/20 13:27:53 $
  Version:   $Revision: 1.10 $

  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.

=========================================================================*/
#if defined(_MSC_VER)
#pragma warning ( disable : 4786 )
#endif

#ifdef __BORLANDC__
#define ITK_LEAN_AND_MEAN
#endif

//  Software Guide : BeginLatex
//
//  This example illustrates how to read and write an image of pixel type
//  \doxygen{Vector}.
//
//  \index{itk::ImageFileRead!Vector images}
//  \index{itk::ImageFileWrite!Vector images}
//  \index{Vector images!Reading}
//  \index{Vector images!Writing}
//
//  Software Guide : EndLatex 



// Software Guide : BeginLatex
//
// We should include the header files for the Image, the ImageFileReader and
// the ImageFileWriter.
//
// Software Guide : EndLatex 

// Software Guide : BeginCodeSnippet
#include "itkImage.h"
#include "itkImageFileReader.h"
#include "itkImageFileWriter.h"
// Software Guide : EndCodeSnippet


int main( int argc, char * argv [] )
{

  // Verify the number of parameters in the command line
  if( argc < 3 )
    {
    std::cerr << "Usage: " << std::endl;
    std::cerr << argv[0] << " inputImageFile  outputImageFile " << std::endl;
    return EXIT_FAILURE;
    }

// Software Guide : BeginLatex
//
// Then we define the specific type of vector to be used as pixel type.
//
// Software Guide : EndLatex 

// Software Guide : BeginCodeSnippet
  const unsigned int VectorDimension = 3;

  typedef itk::Vector< float, VectorDimension >    PixelType;
// Software Guide : EndCodeSnippet


// Software Guide : BeginLatex
//
// We define the image dimension, and along with the pixel type we use it for
// fully instantiating the image type.
//
// Software Guide : EndLatex 

// Software Guide : BeginCodeSnippet
  const unsigned int ImageDimension = 2;
  
  typedef itk::Image< PixelType, ImageDimension > ImageType;
// Software Guide : EndCodeSnippet



// Software Guide : BeginLatex
//
// Having the image type at hand, we can instantiate the reader and writer
// types, and use them for creating one object of each type.
//
// Software Guide : EndLatex 

// Software Guide : BeginCodeSnippet
  typedef itk::ImageFileReader< ImageType > ReaderType;
  typedef itk::ImageFileWriter< ImageType > WriterType;

  ReaderType::Pointer reader = ReaderType::New();
  WriterType::Pointer writer = WriterType::New();
// Software Guide : EndCodeSnippet


// Software Guide : BeginLatex
//
// Filename must be provided to both the reader and the writer. In this
// particular case we take those filenames from the command line arguments.
//
// Software Guide : EndLatex 

// Software Guide : BeginCodeSnippet
  reader->SetFileName( argv[1] );
  writer->SetFileName( argv[2] );
// Software Guide : EndCodeSnippet


  
// Software Guide : BeginLatex
//
// Being this a minimal example, we create a short pipeline where we simply
// connect the output of the reader to the input of the writer.
//
// Software Guide : EndLatex 

// Software Guide : BeginCodeSnippet
  writer->SetInput( reader->GetOutput() );
// Software Guide : EndCodeSnippet



// Software Guide : BeginLatex
//
// The execution of this short pipeline is triggered by invoking the writer's 
// Update() method. This invocation must be placed inside a try/catch
// block since its execution may result in exceptions being thrown.
//
// Software Guide : EndLatex 

// Software Guide : BeginCodeSnippet
  try
    {
    writer->Update();
    }
  catch( itk::ExceptionObject & err ) 
    { 
    std::cerr << "ExceptionObject caught !" << std::endl; 
    std::cerr << err << std::endl; 
    return EXIT_FAILURE;
    } 
// Software Guide : EndCodeSnippet



// Software Guide : BeginLatex
//
// Of course, you could envision the addition of filters in between the reader
// and the writer. Those filters could perform operations on the vector image.
//
// Software Guide : EndLatex 



  return EXIT_SUCCESS;
}
