wallPoint.H

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/*---------------------------------------------------------------------------*\
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    Copyright (C) 2019-2020 OpenCFD Ltd.
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License
    This file is part of OpenFOAM.

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    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::wallPoint

Description
    Holds information regarding nearest wall point. Used in wall distance
    calculation.

SourceFiles
    wallPointI.H
    wallPoint.C

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

#ifndef wallPoint_H
#define wallPoint_H

#include "point.H"
#include "label.H"
#include "scalar.H"
#include "tensor.H"

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

namespace Foam
{

// Forward Declarations
class polyPatch;
class polyMesh;
class wallPoint;

Ostream& operator<<(Ostream&, const wallPoint&);
Istream& operator>>(Istream&, wallPoint&);


/*---------------------------------------------------------------------------*\
                          Class wallPoint Declaration
\*---------------------------------------------------------------------------*/

class wallPoint
{
    // Private Data

        //- Position of nearest wall center
        point origin_;

        //- Normal distance (squared) from cellcenter to origin
        scalar distSqr_;


    // Private Member Functions

        // Update this with w2 if distance less
        template<class TrackingData>
        inline bool update
        (
            const wallPoint& w2,
            const scalar dist2,
            const scalar tol,
            TrackingData& td
        );

        //- Evaluate distance to point.
        //  Update distSqr, origin from whomever is nearer pt.
        //  \return true if w2 is closer to point, false otherwise.
        template<class TrackingData>
        inline bool update
        (
            const point&,
            const wallPoint& w2,
            const scalar tol,
            TrackingData& td
        );


public:

    // Constructors

        //- Default construct
        inline wallPoint();

        //- Construct from origin, distance-squared
        inline wallPoint(const point& origin, const scalar distSqr);


    // Member Functions

        // Access

            const point& origin() const
            {
                return origin_;
            }
            point& origin()
            {
                return origin_;
            }

            scalar distSqr() const
            {
                return distSqr_;
            }
            scalar& distSqr()
            {
                return distSqr_;
            }


        // Needed by FaceCellWave

            //- Changed or contains original (invalid) value
            template<class TrackingData>
            inline bool valid(TrackingData& td) const;

            //- Check for identical geometrical data (eg, cyclics checking)
            template<class TrackingData>
            inline bool sameGeometry
            (
                const polyMesh&,
                const wallPoint&,
                const scalar,
                TrackingData& td
            ) const;

            //- Convert any absolute coordinates into relative to (patch)face
            //- centre
            template<class TrackingData>
            inline void leaveDomain
            (
                const polyMesh&,
                const polyPatch&,
                const label patchFacei,
                const point& faceCentre,
                TrackingData& td
            );

            //- Reverse of leaveDomain
            template<class TrackingData>
            inline void enterDomain
            (
                const polyMesh&,
                const polyPatch&,
                const label patchFacei,
                const point& faceCentre,
                TrackingData& td
            );

            //- Apply rotation matrix to any coordinates
            template<class TrackingData>
            inline void transform
            (
                const polyMesh&,
                const tensor&,
                TrackingData& td
            );

            //- Influence of neighbouring face.
            template<class TrackingData>
            inline bool updateCell
            (
                const polyMesh&,
                const label thisCelli,
                const label neighbourFacei,
                const wallPoint& neighbourInfo,
                const scalar tol,
                TrackingData& td
            );

            //- Influence of neighbouring cell.
            template<class TrackingData>
            inline bool updateFace
            (
                const polyMesh&,
                const label thisFacei,
                const label neighbourCelli,
                const wallPoint& neighbourInfo,
                const scalar tol,
                TrackingData& td
            );

            //- Influence of different value on same face.
            template<class TrackingData>
            inline bool updateFace
            (
                const polyMesh&,
                const label thisFacei,
                const wallPoint& neighbourInfo,
                const scalar tol,
                TrackingData& td
            );

            //- Interpolate different values
            template<class TrackingData>
            wallPoint
            (
                const polyMesh&,
                const scalar weight,
                const label face0,
                const wallPoint& info0,
                const label face1,
                const wallPoint& info1,
                const scalar tol,
                TrackingData& td
            );

            //- Test for equality, with TrackingData
            template<class TrackingData>
            inline bool equal(const wallPoint&, TrackingData& td) const;

            //- Interpolate between two values (lerp). Returns true if
            //- causes changes. Not sure if needs to be specialised between
            //- face and cell and what index is needed...
            template<class TrackingData>
            inline bool interpolate
            (
                const polyMesh&,
                const point& pt,
                const label i0,
                const wallPoint& f0,
                const label i1,
                const wallPoint& f1,
                const scalar weight,
                const scalar tol,
                TrackingData& td
            );


    // Member Operators

        //- Test for equality
        inline bool operator==(const wallPoint&) const;

        //- Test for inequality
        inline bool operator!=(const wallPoint&) const;


    // IOstream Operators

        friend Ostream& operator<<(Ostream&, const wallPoint&);
        friend Istream& operator>>(Istream&, wallPoint&);
};


// * * * * * * * * * * * * * * * * * Traits  * * * * * * * * * * * * * * * * //

//- Contiguous data for wallPoint
template<> struct is_contiguous<wallPoint> : std::true_type {};

//- Contiguous scalar data for wallPoint
template<> struct is_contiguous_scalar<wallPoint> : std::true_type {};


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

} // End namespace Foam

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

#include "wallPointI.H"

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

#endif

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