/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
     \\/     M anipulation  | Copyright (C) 2015 OpenCFD Ltd.
-------------------------------------------------------------------------------
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::surfaceToPoint

Description
    A topoSetSource to selects points based on relation to surface.

    Select based on:
    - distance to surface
    - inside/outside status to surface
      (Uses normal of nearest surface triangle so requires valid surface
      topology!)

SourceFiles
    surfaceToPoint.C

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

#ifndef surfaceToPoint_H
#define surfaceToPoint_H

#include "topoSetSource.H"
#include "Map.H"

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

namespace Foam
{
class triSurfaceSearch;

/*---------------------------------------------------------------------------*\
                           Class surfaceToPoint Declaration
\*---------------------------------------------------------------------------*/

class surfaceToPoint
:
    public topoSetSource
{

    // Private data

        //- Add usage string
        static addToUsageTable usage_;

        //- Name of surface file
        const fileName surfName_;

        //- If > 0 : include points with distance to surface less than nearDist.
        const scalar nearDist_;

        //- Include all points on opposite sign of normal on nearest surface.
        const bool includeInside_;

        //- Include all points on this sign of normal on nearest surface.
        const bool includeOutside_;


    // Private Member Functions

        //- Depending on surface add to or delete from pointSet.
        void combine(topoSet& set, const bool add) const;

        //- Check settings at construction time.
        void checkSettings() const;

public:

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

    // Constructors

        //- Construct from components
        surfaceToPoint
        (
            const polyMesh& mesh,
            const fileName& surfName,
            const scalar nearDist,
            const bool includeInside,
            const bool includeOutside
        );

        //- Construct from dictionary
        surfaceToPoint
        (
            const polyMesh& mesh,
            const dictionary& dict
        );

        //- Construct from Istream
        surfaceToPoint
        (
            const polyMesh& mesh,
            Istream&
        );


    //- Destructor
    virtual ~surfaceToPoint();


    // Member Functions

        virtual sourceType setType() const
        {
            return POINTSETSOURCE;
        }

        virtual void applyToSet
        (
            const topoSetSource::setAction action,
            topoSet&
        ) const;

};


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

} // End namespace Foam

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

#endif

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