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========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / A nd | Copyright (C) 2011-2026 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 "circleRandom.H"
#include "meshSearch.H"
#include "mathematicalConstants.H"
#include "addToRunTimeSelectionTable.H"
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
namespace Foam
{
namespace sampledSets
{
defineTypeNameAndDebug(circleRandom, 0);
addToRunTimeSelectionTable(sampledSet, circleRandom, word);
}
}
// * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * //
bool Foam::sampledSets::circleRandom::calcSamples
(
DynamicList<point>& samplingPositions,
DynamicList<scalar>&,
DynamicList<label>& samplingSegments,
DynamicList<label>& samplingCells,
DynamicList<label>& samplingFaces
) const
{
const meshSearch& searchEngine = meshSearch::New(mesh());
randomGenerator rndGen(261782, true);
const vector radial1 = normalised(perpendicular(normal_));
const vector radial2 = normalised(normal_ ^ radial1);
for (label i = 0; i < nPoints_; ++ i)
{
// Request all random numbers simultaneously on all processors so that
// the generator state stays consistent
const scalar r = radius_*rndGen.scalar01();
const scalar theta = 2*constant::mathematical::pi*rndGen.scalar01();
const scalar c = cos(theta), s = sin(theta);
const point pt = centre_ + r*(c*radial1 + s*radial2);
const label celli = searchEngine.findCell(pt);
if (celli != -1)
{
samplingPositions.append(pt);
samplingSegments.append(i);
samplingCells.append(celli);
samplingFaces.append(-1);
}
}
// This set is unordered. Distances have not been created.
return false;
}
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
Foam::sampledSets::circleRandom::circleRandom
(
const word& name,
const polyMesh& mesh,
const dictionary& dict
)
:
sampledSet(name, mesh, dict),
centre_(dict.lookup("centre")),
normal_(normalised(dict.lookup<vector>("normal"))),
radius_(dict.lookup<scalar>("radius")),
nPoints_(dict.lookup<label>("nPoints"))
{}
// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
Foam::sampledSets::circleRandom::~circleRandom()
{}
// ************************************************************************* //
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