#include "itkGridImageSource.h"
#include "itkImageFileWriter.h"
#include "itkBSplineKernelFunction.h"

int itkGridImageSourceTest0( int argc, char *argv[] )
{
  typedef double PixelType;
  const unsigned int ImageDimension = 2;
  typedef itk::Image<PixelType, ImageDimension> ImageType;   

  // Instantiate the filter
  typedef itk::GridImageSource<ImageType> GridSourceType;
  GridSourceType::Pointer gridImage = GridSourceType::New();

  double scale = 255.0;
  ImageType::SizeType size;
  ImageType::PointType origin;
  ImageType::SpacingType spacing;
  GridSourceType::ArrayType gridSpacing; 
  GridSourceType::ArrayType gridOffset; 
  GridSourceType::ArrayType sigma; 
  GridSourceType::BoolArrayType which; 

  // Specify image parameters
  origin.Fill( 0.0 );
  size.Fill( 128 );
  spacing.Fill( 1.0 );
  
  // Specify grid parameters
  gridSpacing.Fill( 8.0 );
  gridOffset.Fill( 0.0 );
  sigma.Fill( 3 );
  which.Fill( true );

  // Specify 0th order B-spline function (Box function)
  typedef itk::BSplineKernelFunction<0> KernelType;
  KernelType::Pointer kernel = KernelType::New();
  
  // Set parameters
  gridImage->SetKernelFunction( kernel );
  gridImage->SetSpacing( spacing );
  gridImage->SetOrigin( origin );
  gridImage->SetSize( size );
  gridImage->SetGridSpacing( gridSpacing );
  gridImage->SetGridOffset( gridOffset );
  gridImage->SetWhichDimensions( which );
  gridImage->SetSigma( sigma );
  gridImage->SetScale( scale );
  
  try
    {
    gridImage->Update();
    }
  catch (itk::ExceptionObject & err)
    { 
    std::cout << "ExceptionObject caught !" << std::endl; 
    std::cout << err << std::endl; 
    return EXIT_FAILURE;
    }

  typedef itk::ImageFileWriter<ImageType> WriterType;
  WriterType::Pointer writer = WriterType::New();
  writer->SetFileName( argv[1] );
  writer->SetInput( gridImage->GetOutput() );
  writer->Update();
  
  return EXIT_SUCCESS;
}

int itkGridImageSourceTest1( int argc, char *argv[] )
{
  typedef double PixelType;
  const unsigned int ImageDimension = 2;
  typedef itk::Image<PixelType, ImageDimension> ImageType;   

  // Instantiate the filter
  typedef itk::GridImageSource<ImageType> GridSourceType;
  GridSourceType::Pointer gridImage = GridSourceType::New();

  double scale = 255.0;
  ImageType::SizeType size;
  ImageType::PointType origin;
  ImageType::SpacingType spacing;
  GridSourceType::ArrayType gridSpacing; 
  GridSourceType::ArrayType gridOffset; 
  GridSourceType::ArrayType sigma; 
  GridSourceType::BoolArrayType which; 

  // Specify image parameters
  origin.Fill( 0.0 );
  size.Fill( 128 );
  spacing.Fill( 1.0 );
  
  // Specify grid parameters
  gridSpacing.Fill( 16.0 );
  gridOffset.Fill( 0.0 );
  sigma.Fill( 3 );
  which.Fill( true );

  // Specify 0th order B-spline function (Box function)
  typedef itk::BSplineKernelFunction<3> KernelType;
  KernelType::Pointer kernel = KernelType::New();
  
  // Set parameters
  gridImage->SetKernelFunction( kernel );
  gridImage->SetSpacing( spacing );
  gridImage->SetOrigin( origin );
  gridImage->SetSize( size );
  gridImage->SetGridSpacing( gridSpacing );
  gridImage->SetGridOffset( gridOffset );
  gridImage->SetWhichDimensions( which );
  gridImage->SetSigma( sigma );
  gridImage->SetScale( scale );
  
  try
    {
    gridImage->Update();
    }
  catch (itk::ExceptionObject & err)
    { 
    std::cout << "ExceptionObject caught !" << std::endl; 
    std::cout << err << std::endl; 
    return EXIT_FAILURE;
    }

  typedef itk::ImageFileWriter<ImageType> WriterType;
  WriterType::Pointer writer = WriterType::New();
  writer->SetFileName( argv[1] );
  writer->SetInput( gridImage->GetOutput() );
  writer->Update();
  
  return EXIT_SUCCESS;
}

int itkGridImageSourceTest2( int argc, char *argv[] )
{
  typedef double PixelType;
  const unsigned int ImageDimension = 3;
  typedef itk::Image<PixelType, ImageDimension> ImageType;   

  // Instantiate the filter
  typedef itk::GridImageSource<ImageType> GridSourceType;
  GridSourceType::Pointer gridImage = GridSourceType::New();

  double scale = 255.0;
  ImageType::SizeType size;
  ImageType::PointType origin;
  ImageType::SpacingType spacing;
  GridSourceType::ArrayType gridSpacing; 
  GridSourceType::ArrayType gridOffset; 
  GridSourceType::ArrayType sigma; 
  GridSourceType::BoolArrayType which; 

  // Specify image parameters
  origin.Fill( 0.0 );
  size.Fill( 128 );
  spacing.Fill( 1.0 );
  
  // Specify grid parameters
  gridSpacing.Fill( 16.0 );
  gridOffset.Fill( 0.0 );
  sigma.Fill( 3 );
  which.Fill( true );
  which[ImageDimension-1] = false;

  // Set parameters
  gridImage->SetSpacing( spacing );
  gridImage->SetOrigin( origin );
  gridImage->SetSize( size );
  gridImage->SetGridSpacing( gridSpacing );
  gridImage->SetGridOffset( gridOffset );
  gridImage->SetWhichDimensions( which );
  gridImage->SetSigma( sigma );
  gridImage->SetScale( scale );
  
  try
    {
    gridImage->Update();
    }
  catch (itk::ExceptionObject & err)
    { 
    std::cout << "ExceptionObject caught !" << std::endl; 
    std::cout << err << std::endl; 
    return EXIT_FAILURE;
    }

  typedef itk::ImageFileWriter<ImageType> WriterType;
  WriterType::Pointer writer = WriterType::New();
  writer->SetFileName( argv[1] );
  writer->SetInput( gridImage->GetOutput() );
  writer->Update();
  
  return EXIT_SUCCESS;
}

int itkGridImageSourceTest3( int argc, char *argv[] )
{
  typedef double PixelType;
  const unsigned int ImageDimension = 2;
  typedef itk::Image<PixelType, ImageDimension> ImageType;   

  // Instantiate the filter
  typedef itk::GridImageSource<ImageType> GridSourceType;
  GridSourceType::Pointer gridImage = GridSourceType::New();

  double scale = 255.0;
  ImageType::SizeType size;
  ImageType::PointType origin;
  ImageType::SpacingType spacing;
  GridSourceType::ArrayType gridSpacing; 
  GridSourceType::ArrayType gridOffset; 
  GridSourceType::ArrayType sigma; 
  GridSourceType::BoolArrayType which; 

  // Specify image parameters
  origin.Fill( 0.0 );
  size.Fill( 128 );
  spacing.Fill( 1.0 );
  
  // Specify grid parameters
  gridOffset.Fill( 0.0 );
  gridSpacing[0] = 32.0;
  gridSpacing[1] = 16.0;
  sigma[0] = 1.0;
  sigma[1] = 5.0;
  
  which.Fill( true );

  // Set parameters
  gridImage->SetSpacing( spacing );
  gridImage->SetOrigin( origin );
  gridImage->SetSize( size );
  gridImage->SetGridSpacing( gridSpacing );
  gridImage->SetGridOffset( gridOffset );
  gridImage->SetWhichDimensions( which );
  gridImage->SetSigma( sigma );
  gridImage->SetScale( scale );
  
  try
    {
    gridImage->Update();
    }
  catch (itk::ExceptionObject & err)
    { 
    std::cout << "ExceptionObject caught !" << std::endl; 
    std::cout << err << std::endl; 
    return EXIT_FAILURE;
    }

  typedef itk::ImageFileWriter<ImageType> WriterType;
  WriterType::Pointer writer = WriterType::New();
  writer->SetFileName( argv[1] );
  writer->SetInput( gridImage->GetOutput() );
  writer->Update();
  
  return EXIT_SUCCESS;
}

int main( int argc, char *argv[] )
{
  if ( argc != 3 )
    {
    std::cout << "Usage: " << argv[0] << " outputImage whichTest" << std::endl;
    return EXIT_FAILURE;
    }
    
  int test = EXIT_FAILURE;  
  if ( atoi( argv[2] ) == 0 )
    {
    test = itkGridImageSourceTest0( argc, argv );
    }
  else if ( atoi( argv[2] ) == 1 )
    {
    test = itkGridImageSourceTest1( argc, argv );
    }
  else if ( atoi( argv[2] ) == 2 )
    {
    test = itkGridImageSourceTest2( argc, argv );
    }
  else
    {
    test = itkGridImageSourceTest3( argc, argv );
    }

  return test;  
}