/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright (C) 2011-2018 OpenFOAM Foundation
     \\/     M anipulation  |
-------------------------------------------------------------------------------
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::boundaryRandomSet

Description
    Random samples within patches

Usage
    \table
        Property    | Description                            | Req'd? | Default
        patches     | The patches on which to sample         | yes    |
        nPoints     | The number of points                   | yes    |
        axis        | The coordinate axis that is written    | yes    |
    \endtable

    Example specification:
    \verbatim
    {
        type        boundaryRandom;
        patches     (inlet1 inlet2);
        nPoints     1000;
        axis        x;
    }
    \endverbatim

SourceFiles
    boundaryRandomSet.C

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

#ifndef boundaryRandomSet_H
#define boundaryRandomSet_H

#include "sampledSet.H"
#include "DynamicList.H"
#include "HashSet.H"

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

namespace Foam
{

/*---------------------------------------------------------------------------*\
                        Class boundaryRandomSet Declaration
\*---------------------------------------------------------------------------*/

class boundaryRandomSet
:
    public sampledSet
{
    // Private data

        //- Patches to sample
        const labelHashSet patches_;

        //- Number of points
        const label nPoints_;


    // Private Member Functions

        //- Sample all points
        void calcSamples
        (
            DynamicList<point>& samplingPts,
            DynamicList<label>& samplingCells,
            DynamicList<label>& samplingFaces,
            DynamicList<label>& samplingSegments,
            DynamicList<scalar>& samplingCurveDist
        ) const;

        //- Use calcSamples to obtain samples and copy them into *this
        void genSamples();


public:

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


    // Constructors

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


    //- Destructor
    virtual ~boundaryRandomSet();
};


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

} // End namespace Foam

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

#endif

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