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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 <iostream>
#include "itkInterpolateImageFilter.h"
int
itkInterpolateImageFilterTest(int, char *[])
{
enum
{
ImageDimension = 2
};
using InputPixelType = unsigned long;
using OutputPixelType = unsigned long;
using InputImageType = itk::Image<InputPixelType, ImageDimension>;
using OutputImageType = itk::Image<OutputPixelType, ImageDimension>;
// fill images
using SizeType = InputImageType::SizeType;
SizeType size;
size.Fill(5);
auto image1 = InputImageType::New();
image1->SetRegions(size);
image1->Allocate();
image1->FillBuffer(100);
auto image2 = InputImageType::New();
image2->SetRegions(size);
image2->Allocate();
itk::ImageRegionIteratorWithIndex<InputImageType> inIter2(image2, image2->GetBufferedRegion());
unsigned long temp = 0;
while (!inIter2.IsAtEnd())
{
inIter2.Set(temp);
temp += 2;
++inIter2;
}
using FilterType = itk::InterpolateImageFilter<InputImageType, OutputImageType>;
auto filter = FilterType::New();
filter->SetInput1(image1);
filter->SetInput2(image2);
filter->Print(std::cout);
try
{
filter->Update();
}
catch (const itk::ExceptionObject & err)
{
std::cout << "Caught unexpected exception: " << err << std::endl;
std::cout << "Test failed. " << std::endl;
return EXIT_FAILURE;
}
// walk the output and check the results
itk::ImageRegionIteratorWithIndex<InputImageType> inIter1(image1, image1->GetBufferedRegion());
inIter2.GoToBegin();
itk::ImageRegionIteratorWithIndex<OutputImageType> outIter(filter->GetOutput(),
filter->GetOutput()->GetBufferedRegion());
temp = 50;
while (!inIter1.IsAtEnd())
{
std::cout << ' ' << inIter1.Get() << ' ' << inIter2.Get() << ' ' << outIter.Get() << std::endl;
if (outIter.Get() != temp)
{
std::cout << "Expected output " << temp << " got " << outIter.Get() << " instead. " << std::endl;
std::cout << "Test failed. " << std::endl;
return EXIT_FAILURE;
}
++temp;
++inIter1;
++inIter2;
++outIter;
}
// excerise other methods
filter->GetInput1();
filter->GetInput2();
filter->GetInterpolator();
filter->SetDistance(0.2);
filter->GetDistance();
// set the interpolator to be null
filter->SetInterpolator(nullptr);
bool pass = false;
try
{
filter->Update();
}
catch (const itk::ExceptionObject & err)
{
std::cout << "Caught expected exception: " << err << std::endl;
pass = true;
}
if (!pass)
{
std::cout << "Test failed." << std::endl;
return EXIT_FAILURE;
}
std::cout << "Test passed." << std::endl;
return EXIT_SUCCESS;
}
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