normalToFace.H

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/*---------------------------------------------------------------------------*\
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-------------------------------------------------------------------------------
    Copyright (C) 2011 OpenFOAM Foundation
    Copyright (C) 2018-2020 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::normalToFace
 
Description
    A \c topoSetFaceSource to select faces whose surface normal aligned
    with a given direction.
 
    Operands:
    \table
      Operand   | Type    | Location
      output    | faceSet | $FOAM_CASE/constant/polyMesh/sets/<set>
    \endtable
 
Usage
    Minimal example by using \c system/topoSetDict.actions:
    \verbatim
    {
        // Mandatory (inherited) entries
        name        <name>;
        type        faceSet;
        action      <action>;
 
        // Mandatory entries
        source      normalToFace;
        normal      (1 0 0);
        cos         0.01;
    }
    \endverbatim
 
    where the entries mean:
    \table
      Property   | Description                         | Type | Req'd | Dflt
      name       | Name of faceSet                     | word |  yes  | -
      type       | Type name: faceSet                  | word |  yes  | -
      action     | Action applied on faces - see below | word |  yes  | -
      source     | Source name: normalToFace           | word |  yes  | -
      normal     | The surface normal direction        | vector | yes | -
      cos        | Tolerance angle (range -1, +1), i.e. cosine of angle <!--
               --> between the input normal and face normal | scalar | yes | -
    \endtable
 
    Options for the \c action entry:
    \verbatim
      new      | Create a new faceSet from selected faces
      add      | Add selected faces into this faceSet
      subtract | Remove selected faces from this faceSet
    \endverbatim
 
See also
    - Foam::topoSetSource
    - Foam::topoSetFaceSource
 
SourceFiles
    normalToFace.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef normalToFace_H
#define normalToFace_H
 
#include "topoSetFaceSource.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
                       Class normalToFace Declaration
\*---------------------------------------------------------------------------*/
 
class normalToFace
:
    public topoSetFaceSource
{
    // Private Data
 
        //- Add usage string
        static addToUsageTable usage_;
 
        //- The surface normal direction
        vector normal_;
 
        //- Tolerance (i.e. cos of angle between normal_ and faceNormal)
        const scalar tol_;
 
 
    // Private Member Functions
 
        //- Normalize normal and check tolerance
        void setNormal();
 
 
public:
 
    //- Runtime type information
    TypeName("normalToFace");
 
 
    // Constructors
 
        //- Construct from components
        normalToFace
        (
            const polyMesh& mesh,
            const vector& normal,
            const scalar tol
        );
 
        //- Construct from dictionary
        normalToFace(const polyMesh& mesh, const dictionary& dict);
 
        //- Construct from Istream
        normalToFace(const polyMesh& mesh, Istream&);
 
 
    //- Destructor
    virtual ~normalToFace() = default;
 
 
    // Member Functions
 
        virtual void applyToSet
        (
            const topoSetSource::setAction action,
            topoSet& set
        ) const;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //