/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | foam-extend: Open Source CFD
   \\    /   O peration     | Version:     3.2
    \\  /    A nd           | Web:         http://www.foam-extend.org
     \\/     M anipulation  | For copyright notice see file Copyright
-------------------------------------------------------------------------------
License
    This file is part of foam-extend.

    foam-extend 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.

    foam-extend 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 foam-extend.  If not, see <http://www.gnu.org/licenses/>.

Description
    Merges points on surface if they are within absolute distance.
    Since absolute distance use with care!

\*---------------------------------------------------------------------------*/

#include "triSurface.H"
#include "triSurfaceTools.H"
#include "argList.H"
#include "OFstream.H"
#include "boundBox.H"

using namespace Foam;


// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
// Main program:

int main(int argc, char *argv[])
{
    argList::noParallel();
    argList::validArgs.clear();
    argList::validArgs.append("surface file");
    argList::validArgs.append("merge distance");
    argList::validArgs.append("output file");
    argList args(argc, argv);

    fileName surfFileName(args.additionalArgs()[0]);
    scalar mergeTol(readScalar(IStringStream(args.additionalArgs()[1])()));
    fileName outFileName(args.additionalArgs()[2]);

    Info<< "Reading surface from " << surfFileName << " ..." << endl;
    Info<< "Merging points within " << mergeTol << " meter." << endl;

    triSurface surf1(surfFileName);

    Info<< "Original surface:" << endl;

    surf1.writeStats(Info);


    triSurface cleanSurf(surf1);

    while(true)
    {
        label nOldVert = cleanSurf.nPoints();

        cleanSurf = triSurfaceTools::mergePoints(cleanSurf, mergeTol);

        Info<< "After merging points:" << endl;

        cleanSurf.writeStats(Info);

        if (nOldVert == cleanSurf.nPoints())
        {
            break;
        }
    }

    cleanSurf.write(outFileName);

    Info << "End\n" << endl;

    return 0;
}


// ************************************************************************* //