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/*=========================================================================
*
* Copyright NumFOCUS
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
#include "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkTestingMacros.h"
// Specific ImageIO test
int
itkImageIODirection3DTest(int argc, char * argv[])
{
if (argc < 11)
{
std::cerr << "Usage: " << itkNameOfTestExecutableMacro(argv) << " InputImage (9 direction cosines terms) "
<< "[outputImage]" << std::endl;
return EXIT_FAILURE;
}
constexpr unsigned int Dimension = 3;
using PixelType = unsigned char;
using ImageType = itk::Image<PixelType, Dimension>;
using ReaderType = itk::ImageFileReader<ImageType>;
auto reader = ReaderType::New();
reader->SetFileName(argv[1]);
try
{
reader->Update();
}
catch (const itk::ExceptionObject & e)
{
std::cerr << e << std::endl;
return EXIT_FAILURE;
}
ImageType::ConstPointer image = reader->GetOutput();
ImageType::DirectionType directionCosines = image->GetDirection();
std::cout << directionCosines << std::endl;
unsigned int element = 2;
const double tolerance = 1e-5;
for (unsigned int row = 0; row < Dimension; ++row)
{
for (unsigned int col = 0; col < Dimension; ++col)
{
const double expectedValue = std::stod(argv[element++]);
const double currentValue = directionCosines[row][col];
const double difference = currentValue - expectedValue;
if (itk::Math::abs(difference) > tolerance)
{
std::cerr << "Error: " << std::endl;
std::cerr << "Expected " << expectedValue << std::endl;
std::cerr << "Read " << currentValue << std::endl;
return EXIT_FAILURE;
}
}
}
if (argc > 11)
{
using WriterType = itk::ImageFileWriter<ImageType>;
auto writer = WriterType::New();
writer->SetFileName(argv[11]);
writer->SetInput(reader->GetOutput());
try
{
writer->Update();
}
catch (const itk::ExceptionObject & e)
{
std::cerr << e << std::endl;
return EXIT_FAILURE;
}
}
return EXIT_SUCCESS;
}
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