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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 "itkOptimizerParameterScalesEstimator.h"
/**
* \class OptimizerParameterScalesEstimatorTest for test.
* Create a simple scales estimator class to use for testing here.
*/
class OptimizerParameterScalesEstimatorTest : public itk::OptimizerParameterScalesEstimator
{
public:
ITK_DISALLOW_COPY_AND_MOVE(OptimizerParameterScalesEstimatorTest);
/** Standard class type aliases. */
using Self = OptimizerParameterScalesEstimatorTest;
using Superclass = itk::OptimizerParameterScalesEstimator;
using Pointer = itk::SmartPointer<Self>;
using ConstPointer = itk::SmartPointer<const Self>;
itkNewMacro(Self);
itkOverrideGetNameOfClassMacro(OptimizerParameterScalesEstimatorTest);
/** Estimate parameter scales */
void
EstimateScales(ScalesType & scales) override
{
scales.SetSize(2);
scales.Fill(1.0);
}
double
EstimateStepScale(const ParametersType & step) override
{
double norm = step.two_norm();
return norm;
}
/** Estimate the scales of local steps. */
void
EstimateLocalStepScales(const ParametersType & step, ScalesType & localStepScales) override
{
localStepScales.SetSize(step.size());
}
/** Estimate the trusted scale for steps. */
double
EstimateMaximumStepSize() override
{
return 1.0;
}
protected:
OptimizerParameterScalesEstimatorTest() = default;
~OptimizerParameterScalesEstimatorTest() override = default;
};
/**
* The test program for OptimizerParameterScalesEstimator.
*/
int
itkOptimizerParameterScalesEstimatorTest(int, char *[])
{
auto scalesEstimator = OptimizerParameterScalesEstimatorTest::New();
OptimizerParameterScalesEstimatorTest::ScalesType scales;
scalesEstimator->Print(std::cout);
scalesEstimator->EstimateScales(scales);
std::cout << "Scales estimated: " << scales << std::endl;
std::cout << "Test passed" << std::endl;
return EXIT_SUCCESS;
}
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