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    /*---------------------------------------------------------------------------*\
      =========                 |
      \\      /  F ield         | cfMesh: A library for mesh generation
       \\    /   O peration     |
        \\  /    A nd           | Author: Franjo Juretic (franjo.juretic@c-fields.com)
         \\/     M anipulation  | Copyright (C) Creative Fields, Ltd.
    -------------------------------------------------------------------------------
    License
        This file is part of cfMesh.
    
        cfMesh 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.
    
        cfMesh 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 cfMesh.  If not, see <http://www.gnu.org/licenses/>.
    
    Description
        Converts specified patches into subsets
    
    \*---------------------------------------------------------------------------*/
    
    #include "argList.H"
    #include "triSurf.H"
    #include "triFaceList.H"
    #include "labelLongList.H"
    #include "IFstream.H"
    #include "OFstream.H"
    
    using namespace Foam;
    
    // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
    
    int main(int argc, char *argv[])
    {
        argList::noParallel();
        argList::validArgs.clear();
    
        argList::validArgs.append("input surface file");
        argList::validArgs.append("output surface file");
        argList args(argc, argv);
    
        fileName inFileName(args.args()[1]);
        fileName outFileName(args.args()[2]);
    
        if( outFileName.ext() != "fms" )
            Warning << "The subsets cann only be saved in the .fms format" << endl;
    
        triSurf origSurf(inFileName);
    
        wordList patchNames(origSurf.patches().size());
        forAll(origSurf.patches(), patchI)
            patchNames[patchI] = origSurf.patches()[patchI].name();
    
        forAll(patchNames, patchI)
        {
            labelLongList subsetFacets;
            forAll(origSurf, triI)
            {
                if( origSurf[triI].region() == patchI )
                    subsetFacets.append(triI);
            }
    
            const label subsetId = origSurf.addFacetSubset(patchNames[patchI]);
    
            forAll(subsetFacets, i)
                origSurf.addFacetToSubset(subsetId, subsetFacets[i]);
        }
    
        origSurf.writeSurface(outFileName);
    
        Info << "End\n" << endl;
    
        return 0;
    }
    
    // ************************************************************************* //