116 lines
3.5 KiB
C
116 lines
3.5 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 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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Description
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Example of a simple laplacian smoother
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\*---------------------------------------------------------------------------*/
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#include "argList.H"
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#include "OFstream.H"
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#include "boundBox.H"
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#include "MeshedSurfaces.H"
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using namespace Foam;
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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// Main program:
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int main(int argc, char *argv[])
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{
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argList::noParallel();
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argList::validOptions.clear();
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argList::validArgs.append("surfaceFile");
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argList::validArgs.append("underrelax factor (0..1)");
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argList::validArgs.append("iterations");
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argList::validArgs.append("output surfaceFile");
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argList args(argc, argv);
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const fileName surfFileName = args[1];
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const scalar relax = args.argRead<scalar>(2);
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const label iters = args.argRead<label>(3);
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const fileName outFileName = args[4];
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if (relax <= 0 || relax > 1)
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{
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FatalErrorIn(args.executable()) << "Illegal relaxation factor "
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<< relax << endl
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<< "0: no change 1: move vertices to average of neighbours"
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<< exit(FatalError);
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}
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Info<< "Relax:" << relax << nl
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<< "Iters:" << iters << nl
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<< "Reading surface from " << surfFileName << " ..." << endl;
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meshedSurface surf1(surfFileName);
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Info<< "Faces : " << surf1.size() << nl
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<< "Vertices : " << surf1.nPoints() << nl
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<< "Bounding Box : " << boundBox(surf1.localPoints()) << endl;
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pointField newPoints(surf1.localPoints());
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const labelListList& pointEdges = surf1.pointEdges();
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for (label iter = 0; iter < iters; iter++)
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{
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forAll(pointEdges, vertI)
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{
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vector avgPos(vector::zero);
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const labelList& myEdges = pointEdges[vertI];
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forAll(myEdges, myEdgeI)
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{
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const edge& e = surf1.edges()[myEdges[myEdgeI]];
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label otherVertI = e.otherVertex(vertI);
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avgPos += surf1.localPoints()[otherVertI];
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}
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avgPos /= myEdges.size();
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newPoints[vertI] = (1-relax)*newPoints[vertI] + relax*avgPos;
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}
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}
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Info<< "Writing surface to " << outFileName << " ..." << endl;
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meshedSurface
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(
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xferMove(newPoints),
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xferCopy(surf1.localFaces()),
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xferCopy(surf1.surfZones())
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).write(outFileName);
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Info<< "End\n" << endl;
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return 0;
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}
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// ************************************************************************* //
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