directions.H

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/*---------------------------------------------------------------------------*\
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    Copyright (C) 2011-2016 OpenFOAM Foundation
    Copyright (C) 2020-2025 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.
 
    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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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::directions
 
Description
    Set of directions for each cell in the mesh. Either uniform and size=1
    or one set of directions per cell.
 
    Used in splitting cells. Options:
    - global        : global xyz coordinate system
    - user          : user-defined coordinate system
    - patchLocal    : normal direction from (flat) given patch
    - fieldBased    : supply separate vectorIOField for each direction
 
SourceFiles
    directions.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef directions_H
#define directions_H
 
#include "List.H"
#include "vectorField.H"
#include "Enum.H"
#include "point.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
// Forward Declarations
class polyMesh;
class twoDPointCorrector;
class primitiveMesh;
class polyPatch;
class dictionary;
 
/*---------------------------------------------------------------------------*\
                           Class directions Declaration
\*---------------------------------------------------------------------------*/
 
class directions
:
    public List<vectorField>
{
public:
 
    // Data Types
 
        //- Enumeration listing the possible coordinate directions.
        enum directionType
        {
            TAN1,
            TAN2,
            NORMAL
        };
 
 
private:
 
        static const Enum<directionType> directionTypeNames_;
 
 
    // Private Member Functions
 
        //- For debugging. Write point coordinate.
        static void writeOBJ(Ostream& os, const point& pt);
 
        //- For debugging. Write edge between two points.
        static void writeOBJ
        (
            Ostream& os,
            const point& pt0,
            const point& pt1,
            label& vertI
        );
 
        //- For debugging. Write hedgehog display of vectorField as obj file.
        static void writeOBJ
        (
            const fileName& fName,
            const primitiveMesh& mesh,
            const vectorField& dirs
        );
 
        //- Check if vec has no component in 2D normal direction. Exits if
        //  so.
        static void check2D
        (
            const twoDPointCorrector* correct2DPtr,
            const vector& vec
        );
 
        //- Get coordinate direction for all cells in mesh by propagating from
        //  vector on patch.
        static vectorField propagateDirection
        (
            const polyMesh& mesh,
            const bool useTopo,
            const polyPatch& pp,
            const vectorField& ppField,
            const vector& defaultDir
        );
 
        //- No copy construct
        directions(const directions&) = delete;
 
        //- No copy assignment
        void operator=(const directions&) = delete;
 
 
public:
 
    // Constructors
 
        //- Construct from mesh and dictionary and optional 2D corrector.
        directions
        (
            const polyMesh& mesh,
            const dictionary& dict,
            const twoDPointCorrector* correct2DPtr = nullptr
        );
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //