/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright (C) 1991-2009 OpenCFD Ltd.
     \\/     M anipulation  |
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.

    OpenFOAM 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 2 of the License, or (at your
    option) any later version.

    OpenFOAM 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 OpenFOAM; if not, write to the Free Software Foundation,
    Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

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

#include "enrichedPatch.H"
#include "primitiveMesh.H"
#include "DynamicList.H"

// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //


// * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //

void Foam::enrichedPatch::calcPointPoints() const
{
    // Calculate point-point addressing
    if (pointPointsPtr_)
    {
        FatalErrorIn("void enrichedPatch::calcPointPoints() const")
            << "Point-point addressing already calculated."
            << abort(FatalError);
    }

    // Algorithm:
    // Go through all faces and add the previous and next point as the
    // neighbour for each point. While inserting points, reject the
    // duplicates (as every internal edge will be visited twice).
    List<DynamicList<label, primitiveMesh::edgesPerPoint_> >
        pp(meshPoints().size());

    const faceList& lf = localFaces();

    register bool found = false;

    forAll (lf, faceI)
    {
        const face& curFace = lf[faceI];

        forAll (curFace, pointI)
        {
            DynamicList<label, primitiveMesh::edgesPerPoint_>&
                curPp = pp[curFace[pointI]];

            // Do next label
            label next = curFace.nextLabel(pointI);

            found = false;

            forAll (curPp, i)
            {
                if (curPp[i] == next)
                {
                    found = true;
                    break;
                }
            }

            if (!found)
            {
                curPp.append(next);
            }

            // Do previous label
            label prev = curFace.prevLabel(pointI);
            found = false;

            forAll (curPp, i)
            {
                if (curPp[i] == prev)
                {
                    found = true;
                    break;
                }
            }

            if (!found)
            {
                curPp.append(prev);
            }
        }
    }

    // Re-pack the list
    pointPointsPtr_ = new labelListList(pp.size());
    labelListList& ppAddr = *pointPointsPtr_;

    forAll (pp, pointI)
    {
        ppAddr[pointI].transfer(pp[pointI]);
    }
}


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