surfaceSlipDisplacementPointPatchVectorField.H

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/*---------------------------------------------------------------------------*\
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Class
    Foam::surfaceSlipDisplacementPointPatchVectorField

Description
    Displacement follows a triSurface. Use in a displacementMotionSolver
    as a bc on the pointDisplacement field.
    Following is done by calculating the projection onto the surface according
    to the projectMode
    - NEAREST : nearest
    - POINTNORMAL : intersection with point normal
    - FIXEDNORMAL : intersection with fixed vector

    Optionally (intersection only) removes a component ("wedgePlane") to
    stay in 2D.

    Needs:
    - geometry : dictionary with searchableSurfaces. (usually
      triSurfaceMeshes in constant/triSurface)
    - projectMode : see above
    - projectDirection : if projectMode = fixedNormal
    - wedgePlane : -1 or component to knock out of intersection normal
    - frozenPointsZone : empty or name of pointZone containing points
                         that do not move
    - scale : optional scaling factor as PatchFunction1. Note that this
              is only supported for polyPatch-derived pointPatches
              ('facePointPatch') and not for stand-alone pointPatches.


SourceFiles
    surfaceSlipDisplacementPointPatchVectorField.cxx

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

#ifndef Foam_surfaceSlipDisplacementPointPatchVectorField_H
#define Foam_surfaceSlipDisplacementPointPatchVectorField_H

#include "pointPatchFields.H"
#include "searchableSurfaces.H"
#include "PatchFunction1.H"

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namespace Foam
{

/*---------------------------------------------------------------------------*\
          Class surfaceSlipDisplacementPointPatchVectorField Declaration
\*---------------------------------------------------------------------------*/

class surfaceSlipDisplacementPointPatchVectorField
:
    public pointPatchVectorField
{
    typedef surfaceSlipDisplacementPointPatchVectorField this_bctype;
    typedef pointPatchVectorField parent_bctype;

public:

    // Public Data Types

        enum projectMode
        {
            NEAREST,
            POINTNORMAL,
            FIXEDNORMAL
        };

private:

    // Private Data

        //- Project mode names
        static const Enum<projectMode> projectModeNames_;

        //- Names of surfaces
        const dictionary surfacesDict_;

        //- How to project/project onto surface
        const projectMode projectMode_;

        //- Direction to project
        const vector projectDir_;

        //- Plane for 2D wedge case or -1.
        const label wedgePlane_;

        //- pointZone with frozen points
        const word frozenPointsZone_;

        //- Scalar scale factor
        autoPtr<PatchFunction1<scalar>> scalePtr_;

        //- Demand driven: surface to project
        mutable autoPtr<searchableSurfaces> surfacesPtr_;


    // Private Member Functions

        //- Calculate displacement (w.r.t. points0()) to project onto surface
        void calcProjection(vectorField& displacement) const;

public:

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


    // Constructors

        //- Construct from patch and internal field
        surfaceSlipDisplacementPointPatchVectorField
        (
            const pointPatch&,
            const DimensionedField<vector, pointMesh>&
        );

        //- Construct from patch, internal field and dictionary
        surfaceSlipDisplacementPointPatchVectorField
        (
            const pointPatch&,
            const DimensionedField<vector, pointMesh>&,
            const dictionary&
        );

        //- Construct by mapping onto a new patch
        surfaceSlipDisplacementPointPatchVectorField
        (
            const this_bctype&,
            const pointPatch&,
            const DimensionedField<vector, pointMesh>&,
            const pointPatchFieldMapper&
        );

        //- Copy construct with internal field reference
        surfaceSlipDisplacementPointPatchVectorField
        (
            const this_bctype&,
            const DimensionedField<vector, pointMesh>&
        );

        //- No copy without an internal field
        surfaceSlipDisplacementPointPatchVectorField
        (
            const this_bctype&
        ) = delete;

        //- Clone with an internal field reference
        virtual autoPtr<pointPatchField<vector>> clone
        (
            const DimensionedField<vector, pointMesh>& iF
        ) const
        {
            return pointPatchField<vector>::Clone(*this, iF);
        }


    // Member Functions

        //- Surface to follow. Demand loads surfaceNames.
        const searchableSurfaces& surfaces() const;

        //- Update the coefficients associated with the patch field
        virtual void updateCoeffs();

        //- Write
        virtual void write(Ostream&) const;


    // Member Operators

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

        //- Inherit assignment
        using parent_bctype::operator=;
};


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

} // End namespace Foam

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

#endif

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