121 lines
3.6 KiB
C
121 lines
3.6 KiB
C
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/*---------------------------------------------------------------------------*\
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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 held by original author
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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 the
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Free Software Foundation; either version 2 of the License, or (at your
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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, write to the Free Software Foundation,
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Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Description
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Example of simple laplacian smoother
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\*---------------------------------------------------------------------------*/
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#include "triSurface.H"
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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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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.clear();
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argList::validArgs.append("surface file");
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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 file");
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argList args(argc, argv);
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fileName surfFileName(args.additionalArgs()[0]);
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scalar relax(readScalar(IStringStream(args.additionalArgs()[1])()));
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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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label iters(readLabel(IStringStream(args.additionalArgs()[2])()));
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fileName outFileName(args.additionalArgs()[3]);
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Info<< "Relax:" << relax << endl;
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Info<< "Iters:" << iters << endl;
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Info<< "Reading surface from " << surfFileName << " ..." << endl;
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triSurface surf1(surfFileName);
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Info<< "Triangles : " << surf1.size() << endl;
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Info<< "Vertices : " << surf1.nPoints() << endl;
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Info<< "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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triSurface surf2
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(
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surf1.localFaces(),
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surf1.patches(),
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newPoints
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);
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Info<< "Writing surface to " << outFileName << " ..." << endl;
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surf2.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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