patchZones.H

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/*---------------------------------------------------------------------------*\
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    Copyright (C) 2011-2016 OpenFOAM Foundation
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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 3 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, see <http://www.gnu.org/licenses/>.
 
Class
    Foam::patchZones
 
Description
    Calculates zone number for every face of patch.
 
    Gets constructed from patch and is a labeList with zone number for
    every patch face.
 
SourceFiles
    patchZones.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef patchZones_H
#define patchZones_H
 
#include "labelList.H"
#include "pointField.H"
#include "polyPatch.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
                           Class patchZones Declaration
\*---------------------------------------------------------------------------*/
 
class patchZones
:
    public labelList
{
    // Private data
 
        //- Reference to patch
        const primitivePatch& pp_;
 
        //- Reference to protected edges
        const boolList& borderEdge_;
 
        //- Max number of zones
        label nZones_;
 
 
    // Private Member Functions
 
        //- Gets labels of changed faces and propagates them to the edges.
        //  Returns labels of edges changed. Does not cross edges marked in
        //  regionEdge
        labelList faceToEdge
        (
            const labelList& changedFaces,
            labelList& edgeRegion
        );
 
        //- Reverse of faceToEdge: gets edges and returns faces
        labelList edgeToFace(const labelList& changedEdges);
 
        //- Fill *this with current zone for every face reachable
        //  from facei without crossing edge marked in borderEdge.
        void markZone(label facei);
 
public:
 
    ClassName("patchZones");
 
 
    // Constructors
 
        //- Fills *this with zone of face. Zone is area
        //  reachable by edge crossing without crossing borderEdge
        //  (bool for every edge in patch).
        patchZones(const primitivePatch& pp, const boolList& borderEdge);
 
 
    // Member Functions
 
        //- Number of zones
        label nZones() const
        {
            return nZones_;
        }
 
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //