cellPointWeight.H

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/*---------------------------------------------------------------------------*\
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  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | www.openfoam.com
     \\/     M anipulation  |
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    Copyright (C) 2011-2017 OpenFOAM Foundation
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.

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Class
    Foam::cellPointWeight

Description
    Foam::cellPointWeight

SourceFiles
    cellPointWeight.C

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

#ifndef Foam_cellPointWeight_H
#define Foam_cellPointWeight_H

#include "vector.H"
#include "barycentric.H"
#include "triFace.H"

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

namespace Foam
{

// Forward Declarations
class polyMesh;

/*---------------------------------------------------------------------------*\
                           Class cellPointWeight Declaration
\*---------------------------------------------------------------------------*/

class cellPointWeight
{
protected:

    // Protected Data

       //- Cell index
       const label celli_;

       //- Weights applied to tet vertices.
       //  Equal to the barycentric coordinates of the interpolation position.
       barycentric weights_;

       //- Face vertex indices
       triFace faceVertices_;


    // Protected Member Functions

        void findTetrahedron
        (
            const polyMesh& mesh,
            const vector& position,
            const label celli
        );

        void findTriangle
        (
            const polyMesh& mesh,
            const vector& position,
            const label facei
        );


public:

    //- Debug switch
    static int debug;

    //- Tolerance used in calculating barycentric coordinates
    //  (applied to normalised values)
    static scalar tol;


    // Constructors

        //- Construct from components
        cellPointWeight
        (
            const polyMesh& mesh,
            const vector& position,
            const label celli,
            const label facei = -1
        );


    // Member Functions

        //- Cell index
        label cell() const noexcept
        {
            return celli_;
        }

        //- Interpolation weights
        const barycentric& weights() const noexcept
        {
            return weights_;
        }

        //- Interpolation addressing for points on face
        const triFace& faceVertices() const noexcept
        {
            return faceVertices_;
        }
};


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

} // End namespace Foam

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

#endif

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