sampledIsoSurface.H

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

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    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::sampledSurfaces::isoSurface

Description
    A sampledSurface defined by a surface of iso value.

    Example:
    \verbatim
    {
        type        isoSurface;
        isoField    p;
        isoValue    1e5;
        filtering   full;
        interpolate yes;
    }
    \endverbatim

Usage
    \table
        Property     | Description             | Required    | Default value
        isoField     | the field to get an iso-surface of | yes |
        isoValue     | the iso-surface value   | yes         |
        filtering    | the level of filtering to perform on the iso-surface \\
                                               | no          | full
        interpolate  | interpolate values to the surface points | no | no
    \endtable

See also
    Foam::isoSurface

SourceFiles
    sampledIsoSurface.C

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

#ifndef sampledIsoSurface_H
#define sampledIsoSurface_H

#include "sampledSurface.H"
#include "isoSurface.H"
#include "MeshedSurface.H"

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

namespace Foam
{
namespace sampledSurfaces
{

/*---------------------------------------------------------------------------*\
                         Class isoSurface Declaration
\*---------------------------------------------------------------------------*/

class isoSurface
:
    public sampledSurface,
    public MeshedSurface<face>
{
    // Private Data

        //- Field to get isoSurface of
        const word isoField_;

        //- Iso value
        const scalarField isoVals_;

        //- Whether to coarsen
        const Foam::isoSurface::filterType filter_;


        // Recreated for every isoSurface

            //- Time at last call, also track it surface needs an update
            mutable label prevTimeIndex_;

            //- For every triangle/face the original cell in mesh
            mutable labelList meshCells_;


    // Private Member Functions

        //- Create iso surface (if time has changed)
        //  Do nothing (and return false) if no update was needed
        bool updateGeometry() const;

        //- Sample field on faces
        template<class Type>
        tmp<Field<Type>> sampleField
        (
            const GeometricField<Type, fvPatchField, volMesh>& vField
        ) const;

        //- Interpolate field to vertices
        template<class Type>
        tmp<Field<Type>>
        interpolateField(const interpolation<Type>&) const;


public:

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


    // Constructors

        //- Construct from dictionary
        isoSurface
        (
            const word& name,
            const polyMesh& mesh,
            const dictionary& dict
        );


    //- Destructor
    virtual ~isoSurface();


    // Member Functions

        //- Return the list of fields required
        virtual wordList fields() const;

        //- Does the surface need an update?
        virtual bool needsUpdate() const;

        //- Mark the surface as needing an update.
        //  May also free up unneeded data.
        //  Return false if surface was already marked as expired.
        virtual bool expire();

        //- Update the surface as required.
        //  Do nothing (and return false) if no update was needed
        virtual bool update();

        //- Points of surface
        virtual const pointField& points() const
        {
            return MeshedSurface<face>::points();
        }

        //- Faces of surface
        virtual const faceList& faces() const
        {
            return *this;
        }

        //- Sample field on surface
        virtual tmp<scalarField> sample
        (
            const volScalarField&
        ) const;

        //- Sample field on surface
        virtual tmp<vectorField> sample
        (
            const volVectorField&
        ) const;

        //- Sample field on surface
        virtual tmp<sphericalTensorField> sample
        (
            const volSphericalTensorField&
        ) const;

        //- Sample field on surface
        virtual tmp<symmTensorField> sample
        (
            const volSymmTensorField&
        ) const;

        //- Sample field on surface
        virtual tmp<tensorField> sample
        (
            const volTensorField&
        ) const;

        //- Interpolate field on surface
        virtual tmp<scalarField> interpolate
        (
            const interpolation<scalar>&
        ) const;

        //- Interpolate field on surface
        virtual tmp<vectorField> interpolate
        (
            const interpolation<vector>&
        ) const;

        //- Interpolate field on surface
        virtual tmp<sphericalTensorField> interpolate
        (
            const interpolation<sphericalTensor>&
        ) const;

        //- Interpolate field on surface
        virtual tmp<symmTensorField> interpolate
        (
            const interpolation<symmTensor>&
        ) const;

        //- Interpolate field on surface
        virtual tmp<tensorField> interpolate
        (
            const interpolation<tensor>&
        ) const;

        //- Write
        virtual void print(Ostream&) const;
};


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

} // End namespace sampledSurfaces
} // End namespace Foam

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

#ifdef NoRepository
    #include "sampledIsoSurfaceTemplates.C"
#endif

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

#endif

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