CuthillMcKeeRenumber.H

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/*---------------------------------------------------------------------------*\
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    Copyright (C) 2011-2015 OpenFOAM Foundation
    Copyright (C) 2022 OpenCFD Ltd.
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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
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    You should have received a copy of the GNU General Public License
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Class
    Foam::CuthillMcKeeRenumber
 
Description
    Cuthill-McKee renumbering
 
SourceFiles
    CuthillMcKeeRenumber.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef Foam_CuthillMcKeeRenumber_H
#define Foam_CuthillMcKeeRenumber_H
 
#include "renumberMethod.H"
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
                   Class CuthillMcKeeRenumber Declaration
\*---------------------------------------------------------------------------*/
 
class CuthillMcKeeRenumber
:
    public renumberMethod
{
    // Private Data
 
        const bool reverse_;
 
 
    // Private Member Functions
 
        //- No copy construct
        CuthillMcKeeRenumber(const CuthillMcKeeRenumber&) = delete;
 
        //- No copy assignment
        void operator=(const CuthillMcKeeRenumber&) = delete;
 
 
public:
 
    //- Runtime type information
    TypeName("CuthillMcKee");
 
 
    // Constructors
 
        //- Construct given the renumber dictionary
        explicit CuthillMcKeeRenumber(const dictionary& dict);
 
 
    //- Destructor
    virtual ~CuthillMcKeeRenumber() = default;
 
 
    // Member Functions
 
        //- Return the order in which cells need to be visited
        //- (ie. from ordered back to original cell label).
        //  This is only defined for geometric renumberMethods.
        virtual labelList renumber(const pointField&) const
        {
            NotImplemented;
            return labelList();
        }
 
        //- Return the order in which cells need to be visited
        //- (ie. from ordered back to original cell label).
        //  Use the mesh connectivity (if needed)
        virtual labelList renumber
        (
            const polyMesh& mesh,
            const pointField& cc
        ) const;
 
        //- Return the order in which cells need to be visited
        //- (ie. from ordered back to original cell label).
        //  Connectivity in losort addressing (= neighbour + offsets into
        //  neighbour)
        virtual labelList renumber
        (
            const labelList& cellCells,
            const labelList& offsets,
            const pointField& cc
        ) const;
 
        //- Return the order in which cells need to be visited
        //- (ie. from ordered back to original cell label).
        virtual labelList renumber
        (
            const CompactListList<label>& cellCells,
            const pointField& cellCentres
        ) const;
 
        //- Return the order in which cells need to be visited
        //- (ie. from ordered back to original cell label).
        //  The connectivity is equal to mesh.cellCells() except
        //  - the connections are across coupled patches
        virtual labelList renumber
        (
            const labelListList& cellCells,
            const pointField& cellCentres
        ) const;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //