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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 "itkDistanceMetric.h"
namespace itk
{
namespace Statistics
{
namespace DistanceMetricTest
{
template <typename TMeasurementVector>
class MyDistanceMetric : public DistanceMetric<TMeasurementVector>
{
public:
/** Standard class type alias. */
using Self = MyDistanceMetric;
using Superclass = DistanceMetric<TMeasurementVector>;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
/** \see LightObject::GetNameOfClass() */
itkOverrideGetNameOfClassMacro(MyDistanceMetric);
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Evaluate membership score */
double
Evaluate(const TMeasurementVector &) const override
{
double score;
score = 1;
return score;
}
double
Evaluate(const TMeasurementVector &, const TMeasurementVector &) const override
{
double score;
score = 1;
return score;
}
};
} // namespace DistanceMetricTest
} // namespace Statistics
} // namespace itk
int
itkDistanceMetricTest(int, char *[])
{
using MeasurementVectorSizeType = unsigned int;
constexpr MeasurementVectorSizeType MeasurementVectorSize = 17;
using MeasurementVectorType = itk::FixedArray<float, MeasurementVectorSize>;
using DistanceMetricType = itk::Statistics::DistanceMetricTest::MyDistanceMetric<MeasurementVectorType>;
using MeasurementVectorSizeType = DistanceMetricType::MeasurementVectorSizeType;
auto distance = DistanceMetricType::New();
std::cout << distance->GetNameOfClass() << std::endl;
std::cout << distance->DistanceMetricType::Superclass::GetNameOfClass() << std::endl;
distance->Print(std::cout);
// try changing the measurement vector size, it should throw an exception
try
{
MeasurementVectorSizeType newSize = 20;
distance->SetMeasurementVectorSize(newSize);
std::cerr << "Changing measurement vector size is not allowed for a fixed array vector\n"
<< "an exception should have been thrown" << std::endl;
return EXIT_FAILURE;
}
catch (const itk::ExceptionObject & excpt)
{
std::cerr << "Exception thrown: " << excpt << std::endl;
}
// try re-setting the measurement vector size to the same value, no exceptions should be
// thrown
try
{
MeasurementVectorSizeType sameSize = 17;
distance->SetMeasurementVectorSize(sameSize);
}
catch (const itk::ExceptionObject & excpt)
{
std::cerr << "Exception thrown: " << excpt << std::endl;
return EXIT_FAILURE;
}
// try setting an origin vector with a different size it should throw an exception
try
{
DistanceMetricType::OriginType origin;
MeasurementVectorSizeType newSize = 25;
origin.SetSize(newSize);
distance->SetOrigin(origin);
std::cerr << "Attempting to set an origin vector with a different size,"
<< "should result in an exception" << std::endl;
return EXIT_FAILURE;
}
catch (const itk::ExceptionObject & excpt)
{
std::cerr << "Exception thrown: " << excpt << std::endl;
}
return EXIT_SUCCESS;
}
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