foamVtkMeshMaps.H

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/*---------------------------------------------------------------------------*\
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    Copyright (C) 2017-2021 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
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    You should have received a copy of the GNU General Public License
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Class
    Foam::foamVtkMeshMaps
 
Description
    Bookkeeping for mesh subsetting and/or polyhedral cell decomposition.
    Although the main use case is for handling vtk meshes, it is not specific
    to VTK alone.
 
    The cellMap is a local-to-global lookup for normal and decomposed cells.
    The pointMap is an optional local-to-global lookup for point ids.
    The additional ids is typically used to store the cell-centre labels
    for additional points of decomposed cells
 
SourceFiles
    foamVtkMeshMaps.C
    foamVtkMeshMapsI.H
 
\*---------------------------------------------------------------------------*/
 
#ifndef Foam_vtk_vtkMeshMaps_H
#define Foam_vtk_vtkMeshMaps_H
 
#include "DynamicList.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
                       Class foamVtkMeshMaps Declaration
\*---------------------------------------------------------------------------*/
 
class foamVtkMeshMaps
{
    // Private Data
 
        //- Original cell ids for all cells (regular and decomposed)
        DynamicList<label> cellMap_;
 
        //- Point labels for subsetted meshes
        DynamicList<label> pointMap_;
 
        //- Any additional (user) labels.
        //  Eg, cell-centre labels for additional points of decomposed cells
        DynamicList<label> additionalIds_;
 
 
public:
 
    // Constructors
 
        //- Default construct: zero-sized, no reserved sizes
        foamVtkMeshMaps() = default;
 
 
    // Member Functions
 
    // Access
 
        //- Original cell ids for all cells (regular and decomposed).
        //  For regular mesh comprising only primitive cell types, this will
        //  be an identity list. However, for subsetted meshes and decomposed
        //  cells this becomes a useful means of mapping from the original mesh.
        inline const labelList& cellMap() const noexcept;
 
        //- Write access to original cell ids
        inline DynamicList<label>& cellMap() noexcept;
 
        //- Point labels for subsetted meshes
        inline const labelList& pointMap() const noexcept;
 
        //- Write access to point labels for subsetted meshes
        inline DynamicList<label>& pointMap() noexcept;
 
        //- Any additional (user) labels.
        //  Eg, cell-centre labels for additional points of decomposed cells
        inline const labelList& additionalIds() const noexcept;
 
        //- Write access to additional (user) labels.
        inline DynamicList<label>& additionalIds() noexcept;
 
 
    // Edit
 
        //- Clear sizing
        inline void clear();
 
        //- Renumber cell ids (cellMap and additionalIds) to account for
        //- subset meshes
        void renumberCells(const labelUList& mapping);
 
        //- Renumber point ids (pointMap) to account for subset meshes
        void renumberPoints(const labelUList& mapping);
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#include "foamVtkMeshMapsI.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //