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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 "itkVTKImageIO.h"
#include "itkImageFileWriter.h"
#include "itkImageFileReader.h"
#include "itkPipelineMonitorImageFilter.h"
#include "itkStreamingImageFilter.h"
#include "itkTestingMacros.h"
int
itkVTKImageIO2Test2(int argc, char * argv[])
{
//
// This test is designed to test the non-streaming capabilities of
// VTKImageIO with tensors
//
if (argc < 2)
{
std::cerr << "Missing parameters." << std::endl;
std::cerr << "Usage: " << itkNameOfTestExecutableMacro(argv);
std::cerr << " outputFileName" << std::endl;
return EXIT_FAILURE;
}
std::string outputFileName = argv[1];
using PixelType = itk::SymmetricSecondRankTensor<double, 3>;
using ImageType = itk::Image<PixelType, 3>;
using ReaderType = itk::ImageFileReader<ImageType>;
using WriterType = itk::ImageFileWriter<ImageType>;
// write a 10^3 image
{
// allocate an 10x10x10 image
auto image = ImageType::New();
ImageType::SizeType imageSize;
imageSize.Fill(10);
image->SetRegions(imageSize);
image->Allocate();
unsigned int cnt = 0;
itk::ImageRegionIterator<ImageType> i(image, image->GetLargestPossibleRegion());
i.GoToBegin();
while (!i.IsAtEnd())
{
// fill the image switching between these pixels
switch (cnt * 3 % 5)
{
case 0:
i.Set(PixelType{});
break;
case 1:
i.Set(itk::NumericTraits<PixelType>::OneValue());
break;
case 2:
i.Set(itk::NumericTraits<PixelType>::OneValue());
break;
}
++cnt;
++i;
}
using IOType = itk::VTKImageIO;
auto vtkIO = IOType::New();
auto writer = WriterType::New();
writer->SetImageIO(vtkIO);
writer->SetInput(image);
writer->SetFileName(outputFileName.c_str());
writer->Update();
}
// check that a request to stream is not
{
using IOType = itk::VTKImageIO;
auto vtkIO = IOType::New();
auto reader = ReaderType::New();
reader->SetFileName(outputFileName.c_str());
reader->SetImageIO(vtkIO);
using MonitorFilter = itk::PipelineMonitorImageFilter<ImageType>;
auto monitor = MonitorFilter::New();
monitor->SetInput(reader->GetOutput());
constexpr unsigned int numberOfDataPieces = 10;
using StreamingFilter = itk::StreamingImageFilter<ImageType, ImageType>;
auto streamer = StreamingFilter::New();
streamer->SetInput(monitor->GetOutput());
streamer->SetNumberOfStreamDivisions(numberOfDataPieces);
streamer->Update();
bool passed = true;
if (!monitor->VerifyAllInputCanNotStream())
{
passed = false;
}
if (!passed)
{
std::cout << monitor << std::endl;
std::cout << "pipeline did not execute as expected!" << std::endl;
return EXIT_FAILURE;
}
}
// request to stream write but is should be denied
{
using IOType = itk::VTKImageIO;
auto vtkIO = IOType::New();
auto reader = ReaderType::New();
reader->SetFileName(outputFileName.c_str());
reader->SetImageIO(vtkIO);
reader->UpdateLargestPossibleRegion();
using MonitorFilter = itk::PipelineMonitorImageFilter<ImageType>;
auto monitor = MonitorFilter::New();
monitor->SetInput(reader->GetOutput());
constexpr unsigned int numberOfDataPieces = 10;
auto writer = WriterType::New();
writer->SetImageIO(vtkIO);
writer->SetInput(monitor->GetOutput());
writer->SetNumberOfStreamDivisions(numberOfDataPieces);
writer->SetFileName(outputFileName.c_str());
writer->Update();
bool passed = true;
if (!monitor->VerifyAllInputCanNotStream())
{
passed = false;
}
if (!passed)
{
std::cout << monitor << std::endl;
std::cout << "pipeline did not execute as expected!" << std::endl;
return EXIT_FAILURE;
}
}
return EXIT_SUCCESS;
}
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