nearestToPoint.H

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/*---------------------------------------------------------------------------*\
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    Copyright (C) 2011-2015 OpenFOAM Foundation
    Copyright (C) 2018-2020 OpenCFD Ltd.
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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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    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::nearestToPoint
 
Description
    A \c topoSetPointSource to select points nearest to given points.
 
    Operands:
    \table
      Operand   | Type     | Location
      output    | pointSet | $FOAM_CASE/constant/polyMesh/sets/<set>
    \endtable
 
Usage
    Minimal example by using \c system/topoSetDict.actions:
    \verbatim
    {
        // Mandatory (inherited) entries
        name        <name>;
        type        pointSet;
        action      <action>;
 
        // Mandatory entries
        source      nearestToPoint;
        points
        (
            (<p1x> <p1y> <p1z>)
            (<p2x> <p2y> <p2z>)
            ...
        );
    }
    \endverbatim
 
    where the entries mean:
    \table
      Property   | Description                          | Type | Req'd | Dflt
      name       | Name of pointSet                     | word |  yes  | -
      type       | Type name: pointSet                  | word |  yes  | -
      action     | Action applied on points - see below | word |  yes  | -
      source     | Source name: nearestToPoint          | word |  yes  | -
      points     | List of selection points      | vectorList  |  yes  | -
    \endtable
 
    Options for the \c action entry:
    \verbatim
      new      | Create a new pointSet from selected points
      add      | Add selected points into this pointSet
      subtract | Remove selected points from this pointSet
    \endverbatim
 
See also
    - Foam::topoSetSource
    - Foam::topoSetPointSource
 
SourceFiles
    nearestToPoint.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef nearestToPoint_H
#define nearestToPoint_H
 
#include "topoSetPointSource.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
                       Class nearestToPoint Declaration
\*---------------------------------------------------------------------------*/
 
class nearestToPoint
:
    public topoSetPointSource
{
    // Private Data
 
        //- Add usage string
        static addToUsageTable usage_;
 
        //- Points to select nearest to
        pointField points_;
 
 
    // Private Member Functions
 
        void combine(topoSet& set, const bool add) const;
 
 
public:
 
    //- Runtime type information
    TypeName("nearestToPoint");
 
 
    // Constructors
 
        //- Construct from components, copying points
        nearestToPoint(const polyMesh& mesh, const pointField& points);
 
        //- Construct from components, moving points
        nearestToPoint(const polyMesh& mesh, pointField&& points);
 
        //- Construct from dictionary
        nearestToPoint(const polyMesh& mesh, const dictionary& dict);
 
        //- Construct from Istream
        nearestToPoint(const polyMesh& mesh, Istream& is);
 
 
    //- Destructor
    virtual ~nearestToPoint() = default;
 
 
    // Member Functions
 
        virtual void applyToSet
        (
            const topoSetSource::setAction action,
            topoSet& set
        ) const;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //