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152 lines
3.8 KiB
C
152 lines
3.8 KiB
C
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | Copyright (C) 2011-2016 OpenFOAM Foundation
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
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\*---------------------------------------------------------------------------*/
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#include "nearestToPoint.H"
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#include "polyMesh.H"
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#include "addToRunTimeSelectionTable.H"
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// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
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namespace Foam
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{
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defineTypeNameAndDebug(nearestToPoint, 0);
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addToRunTimeSelectionTable(topoSetSource, nearestToPoint, word);
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addToRunTimeSelectionTable(topoSetSource, nearestToPoint, istream);
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}
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Foam::topoSetSource::addToUsageTable Foam::nearestToPoint::usage_
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(
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nearestToPoint::typeName,
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"\n Usage: nearestToPoint (pt0 .. ptn)\n\n"
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" Select the nearest point for each of the points pt0 ..ptn\n\n"
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);
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// * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * //
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void Foam::nearestToPoint::combine(topoSet& set, const bool add) const
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{
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// Do linear search since usually just a few points.
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forAll(points_, pointi)
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{
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const pointField& pts = mesh_.points();
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if (pts.size())
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{
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label minPointi = 0;
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scalar minDistSqr = magSqr(pts[minPointi] - points_[pointi]);
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for (label i = 1; i < pts.size(); i++)
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{
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scalar distSqr = magSqr(pts[i] - points_[pointi]);
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if (distSqr < minDistSqr)
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{
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minDistSqr = distSqr;
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minPointi = i;
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}
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}
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addOrDelete(set, minPointi, add);
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}
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}
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}
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// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
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// Construct from components
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Foam::nearestToPoint::nearestToPoint
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(
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const polyMesh& mesh,
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const pointField& points
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)
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:
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topoSetSource(mesh),
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points_(points)
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{}
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// Construct from dictionary
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Foam::nearestToPoint::nearestToPoint
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(
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const polyMesh& mesh,
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const dictionary& dict
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)
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:
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topoSetSource(mesh),
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points_(dict.lookup("points"))
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{}
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// Construct from Istream
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Foam::nearestToPoint::nearestToPoint
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(
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const polyMesh& mesh,
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Istream& is
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)
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:
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topoSetSource(mesh),
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points_(checkIs(is))
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{}
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// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
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Foam::nearestToPoint::~nearestToPoint()
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{}
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// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
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void Foam::nearestToPoint::applyToSet
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(
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const topoSetSource::setAction action,
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topoSet& set
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) const
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{
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if ((action == topoSetSource::NEW) || (action == topoSetSource::ADD))
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{
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Info<< " Adding points nearest to " << points_ << endl;
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combine(set, true);
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}
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else if (action == topoSetSource::DELETE)
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{
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Info<< " Removing points nearest to " << points_ << endl;
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combine(set, false);
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}
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}
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// ************************************************************************* //
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