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========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / A nd | Copyright (C) 2022-2024 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenFOAM 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 General Public License
for more details.
You should have received a copy of the GNU General Public License
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
\*---------------------------------------------------------------------------*/
#include "random.H"
#include "clock.H"
#include "randomGenerator.H"
#include "addToRunTimeSelectionTable.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
namespace decompositionMethods
{
defineTypeNameAndDebug(random, 0);
addToRunTimeSelectionTable
(
decompositionMethod,
random,
decomposer
);
addToRunTimeSelectionTable
(
decompositionMethod,
random,
distributor
);
}
}
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
Foam::decompositionMethods::random::random
(
const dictionary& decompositionDict,
const dictionary& methodDict
)
:
decompositionMethod(decompositionDict),
seed_(methodDict.lookupOrDefault<label>("seed", clock::getTime()))
{}
// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
Foam::labelList Foam::decompositionMethods::random::decompose
(
const polyMesh& mesh,
const pointField& points,
const scalarField& pointWeights
)
{
checkWeights(points, pointWeights);
randomGenerator rndGen(seed_, true);
// Simple random integer. No guarantees about balance.
/*
labelList result(points.size());
forAll(result, i)
{
result[i] = rndGen.sampleAB<label>(0, nDomains());
}
*/
// Sorted random scalar. Equal balance.
scalarList position(points.size());
forAll(points, i)
{
position[i] = rndGen.sample01<scalar>();
}
labelList order(points.size());
sortedOrder(position, order);
labelList result(points.size());
forAll(points, i)
{
result[i] = (nDomains()*order[i])/points.size();
}
return result;
}
// ************************************************************************* //
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