#include "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkCommand.h"
#include "itkSimpleFilterWatcher.h"
#include "itkRGBPixel.h"
#include "itkFFTShiftImageFilter.h"


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

  if( argc != 4 )
    {
    std::cerr << "usage: " << argv[0] << " inputImage outputImage inverse" << std::endl;
    std::cerr << "  inputImage: The input image." << std::endl;
    std::cerr << "  outputImage: The output image." << std::endl;
    std::cerr << "  inverse: 0, to perform a forward transform, or 1 to perform" << std::endl;
    std::cerr << "           an inverse transform." << std::endl;
    exit(1);
    }

  const int dim = 3;
  
  typedef itk::RGBPixel< unsigned char > PType;
  typedef itk::Image< PType, dim > IType;

  typedef itk::ImageFileReader< IType > ReaderType;
  ReaderType::Pointer reader = ReaderType::New();
  reader->SetFileName( argv[1] );

  typedef itk::FFTShiftImageFilter< IType, IType > FilterType;
  FilterType::Pointer filter = FilterType::New();
  filter->SetInput( reader->GetOutput() );
  filter->SetInverse( atoi( argv[3] ) );

  itk::SimpleFilterWatcher watcher(filter, "filter");

  typedef itk::ImageFileWriter< IType > WriterType;
  WriterType::Pointer writer = WriterType::New();
  writer->SetInput( filter->GetOutput() );
  writer->SetFileName( argv[2] );
  writer->Update();

  return 0;
}