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// -*- C++ -*-
/**
* @brief The test file of class NearestPointChecker for standard methods
*
* Copyright 2005-2025 Airbus-EDF-IMACS-ONERA-Phimeca
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "openturns/OT.hxx"
#include "openturns/OTtestcode.hxx"
using namespace OT;
using namespace OT::Test;
int main(int, char *[])
{
TESTPREAMBLE;
OStream fullprint(std::cout);
try
{
// Function
UnsignedInteger sampleSize = 20;
Description input(4);
input[0] = "x1";
input[1] = "x2";
input[2] = "x3";
input[3] = "x4";
SymbolicFunction levelFunction(input, Description(1, "x1+2*x2-3*x3+4*x4"));
LessOrEqual myOperator;
Scalar threshold = 2.0;
Sample mySample(0, levelFunction.getInputDimension());
Scalar random = 0.1;
for(UnsignedInteger index = 0; index < sampleSize; index++)
{
Point point(levelFunction.getInputDimension());
Scalar norm = 0.0;
for(UnsignedInteger coordinate = 0; coordinate < levelFunction.getInputDimension(); coordinate++)
{
point[coordinate] = sqrt(-2.0 * log(random));
random = fmod(random + sqrt(2.0), 1.0);
point[coordinate] *= cos(2.0 * atan(1.0) * random);
norm += point[coordinate] * point[coordinate];
}
for(UnsignedInteger coordinate = 0; coordinate < levelFunction.getInputDimension(); coordinate++)
{
point[coordinate] /= sqrt(norm);
}
mySample.add(point);
}
NearestPointChecker myNearestPointChecker(levelFunction, myOperator, threshold, mySample);
for(UnsignedInteger index = 0; index < sampleSize; index++)
{
fullprint << mySample[index] << std::endl;
}
myNearestPointChecker.run();
fullprint << "myNearestPointChecker = " << myNearestPointChecker << std::endl;
}
catch (TestFailed & ex)
{
std::cerr << ex << std::endl;
return ExitCode::Error;
}
return ExitCode::Success;
}
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