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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: ResampleImageFilter6.cxx,v $
  Language:  C++
  Date:      $Date: 2005/08/27 01:46:01 $
  Version:   $Revision: 1.13 $

  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
//
//  Resampling can also be performed in multi-component images.
//
//  \index{itk::VectorResampleImageFilter!Image internal transform}
//
//  Software Guide : EndLatex 


#include "itkImage.h"
#include "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkVectorResampleImageFilter.h"
#include "itkIdentityTransform.h"
#include "itkVectorLinearInterpolateImageFunction.h"
#include "itkRGBPixel.h"


int main( int argc, char * argv[] )
{
  if( argc < 3 )
    {
    std::cerr << "Usage: " << std::endl;
    std::cerr << argv[0] << "  inputImageFile  outputImageFile" << std::endl;
    return EXIT_FAILURE;
    }

  const     unsigned int   Dimension = 2;
  typedef   unsigned char  PixelComponentType;
  typedef   itk::RGBPixel< PixelComponentType > PixelType;

  typedef itk::Image< PixelType,  Dimension >   ImageType;


  typedef itk::ImageFileReader< ImageType >  ReaderType;
  typedef itk::ImageFileWriter< ImageType >  WriterType;

  ReaderType::Pointer reader = ReaderType::New();
  WriterType::Pointer writer = WriterType::New();

  reader->SetFileName( argv[1] );
  writer->SetFileName( argv[2] );


  typedef itk::VectorResampleImageFilter<
                            ImageType, ImageType >  FilterType;

  FilterType::Pointer filter = FilterType::New();

  typedef itk::VectorLinearInterpolateImageFunction< 
                       ImageType, double >  InterpolatorType;

  InterpolatorType::Pointer interpolator = InterpolatorType::New();

  filter->SetInterpolator( interpolator );


  typedef itk::IdentityTransform< double, Dimension >  TransformType;
  TransformType::Pointer transform = TransformType::New();

  filter->SetTransform( transform );


  // Software Guide : BeginCodeSnippet
  filter->SetDefaultPixelValue( 50 );
  // Software Guide : EndCodeSnippet


  // Software Guide : BeginCodeSnippet
  ImageType::SpacingType spacing;
  spacing[0] = .5; // pixel spacing in millimeters along X
  spacing[1] = .5; // pixel spacing in millimeters along Y

  filter->SetOutputSpacing( spacing );
  // Software Guide : EndCodeSnippet


  // Software Guide : BeginCodeSnippet
  ImageType::PointType origin;
  origin[0] = 30.0;  // X space coordinate of origin
  origin[1] = 40.0;  // Y space coordinate of origin
  filter->SetOutputOrigin( origin );
  // Software Guide : EndCodeSnippet


  ImageType::SizeType   size;

  size[0] = 300;  // number of pixels along X
  size[1] = 300;  // number of pixels along Y

  filter->SetSize( size );

  filter->SetInput( reader->GetOutput() );
  writer->SetInput( filter->GetOutput() );


  
  try
    {
    writer->Update();
    }
  catch( itk::ExceptionObject & excp )
    {
    std::cerr << "Exception thrown " << std::endl;
    std::cerr << excp << std::endl;
    }

  return EXIT_SUCCESS;

}

