structuredRenumber.H

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/*---------------------------------------------------------------------------*\
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    Copyright (C) 2020-2022 OpenCFD Ltd.
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License
    This file is part of OpenFOAM.

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Class
    Foam::structuredRenumber

Description
    Renumbering according to mesh layers.
    depthFirst = true:
        first column gets ids 0..nLayer-1,
        second nLayers..2*nLayers-1 etc.
    depthFirst = false:
        first layer gets ids 0,1,2 etc.

SourceFiles
    structuredRenumber.C

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

#ifndef Foam_structuredRenumber_H
#define Foam_structuredRenumber_H

#include "renumberMethod.H"

namespace Foam
{

// Forward Declarations
template<class Type> class topoDistanceData;

/*---------------------------------------------------------------------------*\
                   Class structuredRenumber Declaration
\*---------------------------------------------------------------------------*/

class structuredRenumber
:
    public renumberMethod
{
public:

    // Public Classes

        //- Less function class that can be used for sorting according to
        //  column and layer
        class layerLess
        {
            const bool depthFirst_;
            const labelList& order_;
            const List<topoDistanceData<label>>& distance_;

        public:

            layerLess
            (
                const bool depthFirst,
                const labelList& order,
                const List<topoDistanceData<label>>& distance
            )
            :
                depthFirst_(depthFirst),
                order_(order),
                distance_(distance)
            {}

            bool operator()(const label a, const label b);
        };


    // Private Data

        const dictionary& coeffsDict_;

        const wordRes patches_;

        const label nLayers_;

        const bool depthFirst_;

        const bool reverse_;

        const autoPtr<renumberMethod> method_;


    // Private Member Functions

        //- No copy construct
        structuredRenumber(const structuredRenumber&) = delete;

        //- No copy assignment
        void operator=(const structuredRenumber&) = delete;


public:

    //- Runtime type information
    TypeName("structured");


    // Constructors

        //- Construct given the renumber dictionary
        explicit structuredRenumber(const dictionary& dict);


    //- Destructor
    virtual ~structuredRenumber() = 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).
        virtual labelList renumber
        (
            const CompactListList<label>& cellCells,
            const pointField& cellCentres
        ) const
        {
            NotImplemented;
            return labelList();
        }

        //- Return the order in which cells need to be visited
        //- (ie. from ordered back to original cell label).
        virtual labelList renumber
        (
            const labelListList& cellCells,
            const pointField& cellCentres
        ) const
        {
            NotImplemented;
            return labelList();
        }
};


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

} // End namespace Foam

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

#endif

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