tetCell.H

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/*---------------------------------------------------------------------------*\
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    Copyright (C) 2011-2017 OpenFOAM Foundation
    Copyright (C) 2019-2021 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
    (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::tetCell
 
Description
    A tetrahedral cell primitive.
 
    It is important that the face/edge ordering is identical for
    a tetrahedron class,
    a tetrahedron cell shape model and a tetCell
 
SourceFiles
    tetCell.C
    tetCellI.H
 
\*---------------------------------------------------------------------------*/
 
#ifndef tetCell_H
#define tetCell_H
 
#include "FixedList.H"
#include "triFace.H"
#include "faceList.H"
#include "edgeList.H"
#include "pointField.H"
#include "tetPointRef.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
// Forward Declarations
class cellShape;
 
/*---------------------------------------------------------------------------*\
                           Class tetCell Declaration
\*---------------------------------------------------------------------------*/
 
class tetCell
:
    public FixedList<label, 4>
{
    // Static Data Members
 
        //- The model faces for TET
        static const label modelFaces_[4][3];
 
        //- The model edges for TET
        static const label modelEdges_[6][2];
 
 
public:
 
    // Constructors
 
        //- Default construct, with invalid point labels (-1)
        inline tetCell();
 
        //- Construct from four point labels
        inline tetCell
        (
            const label a,
            const label b,
            const label c,
            const label d
        );
 
        //- Construct from an initializer list of four point labels
        inline explicit tetCell(std::initializer_list<label> list);
 
        //- Construct from FixedList of four point labels
        inline tetCell(const FixedList<label, 4>& list);
 
        //- Copy construct from a subset of point labels
        inline tetCell
        (
            const labelUList& list,
            const FixedList<label, 4>& indices
        );
 
        //- Copy construct from a subset of point labels
        template<unsigned AnyNum>
        inline tetCell
        (
            const FixedList<label, AnyNum>& list,
            const FixedList<label, 4>& indices
        );
 
        //- Construct from Istream
        inline explicit tetCell(Istream& is);
 
 
    // Member Functions
 
        //- Number of points for TET
        static constexpr label nPoints() noexcept
        {
            return 4;
        }
 
        //- Number of edges for TET
        static constexpr label nEdges() noexcept
        {
            return 6;
        }
 
        //- Number of faces for TET
        static constexpr label nFaces() noexcept
        {
            return 4;
        }
 
        //- Return the model faces
        static const Foam::faceList& modelFaces();
 
        //- Return the model edges
        static const Foam::edgeList& modelEdges();
 
 
        //- Return i-th face
        inline Foam::triFace face(const label facei) const;
 
        //- Return first face adjacent to the given edge
        inline label edgeFace(const label edgei) const;
 
        //- Return face adjacent to the given face sharing the same edge
        inline label edgeAdjacentFace
        (
            const label edgei,
            const label facei
        ) const;
 
        //- Return i-th edge
        inline Foam::edge edge(const label edgei) const;
 
        //- Return i-th edge reversed
        inline Foam::edge reverseEdge(const label edgei) const;
 
        //- The points corresponding to this shape
        inline pointField points(const UList<point>& meshPoints) const;
 
 
    // Operations
 
        //- Return TET shape cell
        cellShape shape() const;
 
        //- Return the tetrahedron
        inline tetPointRef tet(const UList<point>& meshPoints) const;
 
 
    // Housekeeping
 
        //- Identical to edge()
        Foam::edge tetEdge(label edgei) const { return this->edge(edgei); }
 
        //- Identical to shape()
        cellShape tetCellShape() const;
};
 
 
// * * * * * * * * * * * * * * * * * Traits  * * * * * * * * * * * * * * * * //
 
//- Contiguous data for tetCell
template<> struct is_contiguous<tetCell> : std::true_type {};
 
//- Contiguous label data for tetCell
template<> struct is_contiguous_label<tetCell> : std::true_type {};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#include "tetCellI.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //