133 lines
3.6 KiB
C
133 lines
3.6 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) 1991-2009 OpenCFD Ltd.
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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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Finds nearest face and vertex.
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\*---------------------------------------------------------------------------*/
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#include "argList.H"
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#include "OFstream.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::validArgs.clear();
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argList::addOption("x", "X", "The point x-coordinate (if non-zero)");
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argList::addOption("y", "Y", "The point y-coordinate (if non-zero)");
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argList::addOption("z", "Z", "The point y-coordinate (if non-zero)");
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argList::validArgs.append("surface file");
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argList args(argc, argv);
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point samplePt
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(
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args.optionLookupOrDefault<scalar>("x", 0),
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args.optionLookupOrDefault<scalar>("y", 0),
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args.optionLookupOrDefault<scalar>("z", 0)
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);
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Info<< "Looking for nearest face/vertex to " << samplePt << endl;
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Info<< "Reading surf ..." << endl;
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meshedSurface surf1(args.additionalArgs()[0]);
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//
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// Nearest vertex
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//
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const pointField& localPoints = surf1.localPoints();
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label minIndex = -1;
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scalar minDist = GREAT;
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forAll(localPoints, pointI)
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{
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const scalar dist = mag(localPoints[pointI] - samplePt);
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if (dist < minDist)
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{
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minDist = dist;
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minIndex = pointI;
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}
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}
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Info<< "Nearest vertex:" << nl
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<< " index :" << minIndex << " (in localPoints)" << nl
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<< " index :" << surf1.meshPoints()[minIndex]
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<< " (in points)" << nl
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<< " coordinates:" << localPoints[minIndex] << nl
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<< endl;
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//
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// Nearest face
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//
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const pointField& points = surf1.points();
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minIndex = -1;
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minDist = GREAT;
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forAll(surf1, faceI)
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{
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const point centre = surf1[faceI].centre(points);
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const scalar dist = mag(centre - samplePt);
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if (dist < minDist)
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{
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minDist = dist;
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minIndex = faceI;
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}
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}
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const face& f = surf1[minIndex];
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Info<< "Face with nearest centre:" << nl
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<< " index :" << minIndex << nl
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<< " centre :" << f.centre(points) << nl
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<< " face :" << f << nl
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<< " vertex coords:\n";
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forAll(f, fp)
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{
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Info<< " " << points[f[fp]] << "\n";
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}
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Info<< endl;
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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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