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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 "itkSinRegularizedHeavisideStepFunction.h"
#include "itkTestingMacros.h"
int
itkSinRegularizedHeavisideStepFunctionTest1(int, char *[])
{
using InputType = double;
using OutputType = double;
using HeavisideFunctionBaseType = itk::SinRegularizedHeavisideStepFunction<InputType, OutputType>;
auto functionBase0 = HeavisideFunctionBaseType::New();
std::cout << "GetNameOfClass() = " << functionBase0->GetNameOfClass() << std::endl;
functionBase0->Print(std::cout);
constexpr double epsilon = -1.0;
ITK_TRY_EXPECT_EXCEPTION(functionBase0->SetEpsilon(epsilon));
constexpr double epsilon0 = 1.0;
const double epsilon1 = 1e-4;
ITK_TEST_SET_GET_VALUE(epsilon0, functionBase0->GetEpsilon());
functionBase0->SetEpsilon(epsilon1);
ITK_TEST_SET_GET_VALUE(epsilon1, functionBase0->GetEpsilon());
constexpr double epsilon2 = 0.5;
functionBase0->SetEpsilon(epsilon2);
const int minValue = -20;
constexpr int maxValue = 20;
constexpr InputType incValue = 0.1;
for (int x = minValue; x < maxValue; ++x)
{
const InputType ix = x * incValue;
OutputType f = functionBase0->Evaluate(ix);
OutputType df = functionBase0->EvaluateDerivative(ix);
std::cout << ix << ' ' << f << ' ' << df << std::endl;
}
return EXIT_SUCCESS;
}
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