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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: VectorIndexSelection.cxx,v $
  Language:  C++
  Date:      $Date: 2005/08/27 01:46:06 $
  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 : BeginCodeSnippet
#include "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkVectorIndexSelectionCastImageFilter.h"
#include "itkRGBPixel.h"

// Software Guide : EndCodeSnippet


#include "itkImage.h"


int main( int argc, char * argv[] )
{
  // Verify the number of parameters in the command line
  if( argc < 4 )
    {
    std::cerr << "Usage: " << std::endl;
    std::cerr << argv[0] << " inputImageFile  outputImageFile component" << std::endl;
    return EXIT_FAILURE;
    }


  // Software Guide : BeginCodeSnippet
  typedef itk::RGBPixel<unsigned char>  InputPixelType;
  typedef unsigned char       OutputPixelType;
  const   unsigned int        Dimension = 2;

  typedef itk::Image< InputPixelType,  Dimension >    InputImageType;
  typedef itk::Image< OutputPixelType, Dimension >    OutputImageType;
  // Software Guide : EndCodeSnippet


  // Software Guide : BeginCodeSnippet
  typedef itk::ImageFileReader< InputImageType  >  ReaderType;
  typedef itk::VectorIndexSelectionCastImageFilter< InputImageType, OutputImageType  >  FilterType;
  typedef itk::ImageFileWriter< OutputImageType >  WriterType;
  // Software Guide : EndCodeSnippet


  // Software Guide : BeginCodeSnippet
  FilterType::Pointer filter = FilterType::New();
  filter->SetIndex(atoi(argv[3]));
  // Software Guide : EndCodeSnippet


  //  Software Guide : BeginLatex
  //
  //  Then, we create the reader and writer and connect the pipeline.
  //
  //  \index{itk::ImageFileReader!New()}
  //  \index{itk::ImageFileWriter!New()}
  //  \index{itk::ImageFileReader!SmartPointer}
  //  \index{itk::ImageFileWriter!SmartPointer}
  //
  //  Software Guide : EndLatex 

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

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


  //
  // Here we recover the file names from the command line arguments
  //
  const char * inputFilename  = argv[1];
  const char * outputFilename = argv[2];


  // Software Guide : BeginCodeSnippet
  reader->SetFileName( inputFilename  );
  writer->SetFileName( outputFilename );
  // Software Guide : EndCodeSnippet


  //  Software Guide : BeginLatex
  //
  //  Finally we trigger the execution of the pipeline with the Update()
  //  method on the writer. The output image will then be the scaled and cast
  //  version of the input image.
  //
  //  Software Guide : EndLatex 


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


  return EXIT_SUCCESS;
}




