randomRenumber.C

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    Copyright (C) 2011-2012 OpenFOAM Foundation
    Copyright (C) 2021 OpenCFD Ltd.
-------------------------------------------------------------------------------
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.
 
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    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.
 
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#include "randomRenumber.H"
#include "addToRunTimeSelectionTable.H"
#include "Random.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
    defineTypeNameAndDebug(randomRenumber, 0);
 
    addToRunTimeSelectionTable
    (
        renumberMethod,
        randomRenumber,
        dictionary
    );
}
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::randomRenumber::randomRenumber(const dictionary& renumberDict)
:
    renumberMethod(renumberDict)
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
Foam::labelList Foam::randomRenumber::renumber
(
    const pointField& points
) const
{
    Random rndGen(0);
 
    labelList newToOld(identity(points.size()));
 
    for (label iter = 0; iter < 10; iter++)
    {
        forAll(newToOld, i)
        {
            label j = rndGen.position<label>(0, newToOld.size()-1);
            std::swap(newToOld[i], newToOld[j]);
        }
    }
    return newToOld;
}
 
 
Foam::labelList Foam::randomRenumber::renumber
(
    const polyMesh& mesh,
    const pointField& points
) const
{
    return renumber(points);
}
 
 
Foam::labelList Foam::randomRenumber::renumber
(
    const labelListList& cellCells,
    const pointField& points
) const
{
    return renumber(points);
}
 
 
// ************************************************************************* //