primitiveMeshEdgeFaces.C

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/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  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/>.
 
\*---------------------------------------------------------------------------*/
 
#include "primitiveMesh.H"
#include "ListOps.H"
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
const Foam::labelListList& Foam::primitiveMesh::edgeFaces() const
{
    if (!efPtr_)
    {
        if (debug)
        {
            Pout<< "primitiveMesh::edgeFaces() : calculating edgeFaces"
                << endl;
 
            if (debug == -1)
            {
                // For checking calls:abort so we can quickly hunt down
                // origin of call
                FatalErrorIn("primitiveMesh::edgeFaces()")
                    << abort(FatalError);
            }
        }
 
        // Invert faceEdges
        efPtr_ = new labelListList(nEdges());
        invertManyToMany(nEdges(), faceEdges(), *efPtr_);
    }
 
    return *efPtr_;
}
 
 
const Foam::labelList& Foam::primitiveMesh::edgeFaces
(
    const label edgeI,
    dynamicLabelList& storage
) const
{
    if (hasEdgeFaces())
    {
        return edgeFaces()[edgeI];
    }
    else
    {
        // Use the fact that pointEdges are sorted in incrementing edge order
        const edge& e = edges()[edgeI];
        const labelList& pFaces0 = pointFaces()[e[0]];
        const labelList& pFaces1 = pointFaces()[e[1]];
 
        label i0 = 0;
        label i1 = 0;
 
        storage.clear();
 
        while (i0 < pFaces0.size() && i1 < pFaces1.size())
        {
            if (pFaces0[i0] < pFaces1[i1])
            {
                ++i0;
            }
            else if (pFaces0[i0] > pFaces1[i1])
            {
                ++i1;
            }
            else
            {
                // Equal. Append.
                storage.append(pFaces0[i0]);
                ++i0;
                ++i1;
            }
        }
 
        return storage;
    }
}
 
 
const Foam::labelList& Foam::primitiveMesh::edgeFaces(const label edgeI) const
{
    return edgeFaces(edgeI, labels_);
}
 
 
// ************************************************************************* //