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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 "itkOctree.h"
#include "itkNumericTraits.h"
#include "itkImageRegionIterator.h"
#include "itkTestingMacros.h"
#include <cstdlib>
#include <ctime>
#include <cmath>
template <typename TPixel, unsigned int TableSize>
class IdentityMap
{
public:
unsigned int
Evaluate(const TPixel * pixel)
{
auto pixval = static_cast<unsigned int>(*pixel);
return pixval < TableSize ? pixval : TableSize - 1;
}
};
int
itkOctreeTest(int, char *[])
{
using ImageType = itk::Image<unsigned int, 3>;
const ImageType::SizeType imageSize = { { 4, 4, 4 } };
const ImageType::IndexType imageIndex = { { 0, 0, 0 } };
ImageType::RegionType region{ imageIndex, imageSize };
auto img = ImageType::New();
img->SetRegions(region);
img->Allocate();
srand(static_cast<unsigned int>(time(nullptr)));
itk::ImageRegionIterator<ImageType> ri(img, region);
try
{
unsigned int counter = 0;
while (!ri.IsAtEnd())
{
unsigned int val = rand() % 16384;
if (counter && counter % 8 == 0)
{
std::cerr << val << std::endl;
}
else
{
std::cerr << val << ' ';
}
counter++;
ri.Set(val);
++ri;
}
}
catch (const itk::ExceptionObject & ex)
{
ex.Print(std::cerr);
return EXIT_FAILURE;
}
using OctreeType = itk::Octree<unsigned int, 16384, IdentityMap<unsigned int, 16384>>;
auto octree = OctreeType::New();
// ITK_EXERCISE_BASIC_OBJECT_METHODS(octree, Octree, OctreeBase);
octree->BuildFromImage(img);
ImageType::Pointer output = octree->GetImage();
itk::ImageRegionIterator<ImageType> ri2(output, region);
ri.GoToBegin();
IdentityMap<unsigned int, 16384> id;
try
{
while (!ri.IsAtEnd() && !ri2.IsAtEnd())
{
unsigned int x = ri.Get();
unsigned int y = ri2.Get();
unsigned int mapped = id.Evaluate(&x);
std::cerr << "x = " << x << " mapped(x) " << mapped << " y = " << y << std::endl;
if (mapped != y)
{
std::cerr << "Error comparing Input and Output of Octree" << std::endl;
return EXIT_FAILURE;
}
++ri;
++ri2;
}
if (!ri.IsAtEnd() || !ri2.IsAtEnd())
{
std::cerr << "Error, inconsistent image sizes in Octree" << std::endl;
return EXIT_FAILURE;
}
}
catch (const itk::ExceptionObject & ex)
{
ex.Print(std::cerr);
return EXIT_FAILURE;
}
// Test streaming enumeration for OctreeEnums::Octree elements
const std::set<itk::OctreeEnums::Octree> allOctree{ itk::OctreeEnums::Octree::UNKNOWN_PLANE,
itk::OctreeEnums::Octree::SAGITAL_PLANE,
itk::OctreeEnums::Octree::CORONAL_PLANE,
itk::OctreeEnums::Octree::TRANSVERSE_PLANE };
for (const auto & ee : allOctree)
{
std::cout << "STREAMED ENUM VALUE Octree: " << ee << std::endl;
}
// Test streaming enumeration for OctreeEnums::LeafIdentifier elements
const std::set<itk::OctreeEnums::LeafIdentifier> allLeafIdentifier{
itk::OctreeEnums::LeafIdentifier::ZERO, itk::OctreeEnums::LeafIdentifier::ONE,
itk::OctreeEnums::LeafIdentifier::TWO, itk::OctreeEnums::LeafIdentifier::THREE,
itk::OctreeEnums::LeafIdentifier::FOUR, itk::OctreeEnums::LeafIdentifier::FIVE,
itk::OctreeEnums::LeafIdentifier::SIX, itk::OctreeEnums::LeafIdentifier::SEVEN
};
for (const auto & ee : allLeafIdentifier)
{
std::cout << "STREAMED ENUM VALUE Octree: " << ee << std::endl;
}
return EXIT_SUCCESS;
}
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