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/*=========================================================================
*
* Copyright UMC Utrecht and contributors
*
* 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
*
* http://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.
*
*=========================================================================*/
// First include the header file to be tested:
#include "CorrespondingPointsEuclideanDistanceMetric/itkCorrespondingPointsEuclideanDistancePointMetric.h"
#include "itkAdvancedTranslationTransform.h"
#include "elxDefaultConstruct.h"
#include <itkPointSet.h>
#include <gtest/gtest.h>
// The template to be tested.
using itk::CorrespondingPointsEuclideanDistancePointMetric;
// Checks if a default-constructed CorrespondingPointsEuclideanDistancePointMetric has the expected properties.
GTEST_TEST(CorrespondingPointsEuclideanDistancePointMetric, DefaultConstruct)
{
using PointSetType = itk::PointSet<double>;
using MetricType = CorrespondingPointsEuclideanDistancePointMetric<PointSetType, PointSetType>;
const elx::DefaultConstruct<MetricType> defaultConstructedMetric{};
const itk::SingleValuedPointSetToPointSetMetric<PointSetType, PointSetType> & pointSetToPointSetMetric =
defaultConstructedMetric;
EXPECT_EQ(pointSetToPointSetMetric.GetFixedPointSet(), nullptr);
EXPECT_EQ(pointSetToPointSetMetric.GetMovingPointSet(), nullptr);
EXPECT_EQ(pointSetToPointSetMetric.GetFixedImageMask(), nullptr);
EXPECT_EQ(pointSetToPointSetMetric.GetMovingImageMask(), nullptr);
EXPECT_EQ(pointSetToPointSetMetric.GetTransform(), nullptr);
EXPECT_TRUE(pointSetToPointSetMetric.GetUseMetricSingleThreaded());
// Note: `pointSetToPointSetMetric.m_NumberOfPointsCounted` is not public, and does not have a Get member function to
// test its value.
}
// Checks if CorrespondingPointsEuclideanDistancePointMetric has the expected result on a minimal point set pair.
GTEST_TEST(CorrespondingPointsEuclideanDistancePointMetric, MinimalPointSets)
{
using PointSetType = itk::PointSet<double>;
using PointsVectorContainerType = PointSetType::PointsVectorContainer;
using MetricType = CorrespondingPointsEuclideanDistancePointMetric<PointSetType, PointSetType>;
elx::DefaultConstruct<itk::AdvancedTranslationTransform<double, PointSetType::PointDimension>> transform{};
elx::DefaultConstruct<PointsVectorContainerType> fixedPointsVectorContainer{};
fixedPointsVectorContainer.resize(PointSetType::PointDimension);
elx::DefaultConstruct<PointsVectorContainerType> movingPointsVectorContainer{};
movingPointsVectorContainer.CastToSTLContainer() = fixedPointsVectorContainer.CastToSTLConstContainer();
elx::DefaultConstruct<PointSetType> fixedPointSet{};
fixedPointSet.SetPoints(&fixedPointsVectorContainer);
elx::DefaultConstruct<PointSetType> movingPointSet{};
movingPointSet.SetPoints(&movingPointsVectorContainer);
elx::DefaultConstruct<MetricType> metric{};
metric.SetFixedPointSet(&fixedPointSet);
metric.SetMovingPointSet(&movingPointSet);
metric.SetTransform(&transform);
metric.Initialize();
EXPECT_EQ(metric.GetValue(transform.GetParameters()), 0);
}
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