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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 "itkComplexConjugateImageAdaptor.h"
#include "itkImageRegionIterator.h"
using PixelType = std::complex<float>;
using ImageType = itk::Image<PixelType, 2>;
using AdaptorType = itk::ComplexConjugateImageAdaptor<ImageType>;
int
itkComplexConjugateImageAdaptorTest(int, char *[])
{
// Create a test image.
auto image = ImageType::New();
ImageType::SizeType size = { { 10, 10 } };
image->SetRegions(size);
image->Allocate();
ImageType::RegionType region = image->GetLargestPossibleRegion();
srand(50L);
itk::ImageRegionIterator<ImageType> iter(image, region);
for (iter.GoToBegin(); !iter.IsAtEnd(); ++iter)
{
auto randMax = static_cast<float>(RAND_MAX);
PixelType pixel(static_cast<float>(rand()) / randMax, static_cast<float>(rand()) / randMax);
iter.Set(pixel);
}
image->FillBuffer(PixelType(2.0, -3.7));
// Create adaptor.
auto adaptor = AdaptorType::New();
adaptor->SetImage(image);
// Iterate over the pixels and check the functioning of the adaptor.
itk::ImageRegionIterator<ImageType> iterA(image, region);
itk::ImageRegionIterator<AdaptorType> iterB(adaptor, region);
for (iterA.GoToBegin(), iterB.GoToBegin(); !iterA.IsAtEnd(); ++iterA, ++iterB)
{
PixelType imageValue = iterA.Get();
PixelType adaptedValue = iterB.Get();
// Check that the adapted value is as expected.
if (imageValue != std::conj(adaptedValue))
{
std::cerr << "Unexpected adapted pixel value." << std::endl;
std::cerr << "Got " << adaptedValue << ", expected " << imageValue << std::endl;
return EXIT_FAILURE;
}
// Try setting the value and reading it again.
iterB.Set(adaptedValue);
PixelType newValue = iterB.Get();
if (adaptedValue != newValue)
{
std::cerr << "Setting adapted pixel value failed." << std::endl;
std::cerr << "Got " << newValue << ", expected " << adaptedValue << std::endl;
return EXIT_FAILURE;
}
}
// To improve code coverage
adaptor->Print(std::cout);
return EXIT_SUCCESS;
}
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