smoothTriSurfaceMesh.H

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/*---------------------------------------------------------------------------*\
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    Copyright (C) 2016-2018 OpenFOAM Foundation
    Copyright (C) 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
    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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    You should have received a copy of the GNU General Public License
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Class
    Foam::smoothTriSurfaceMesh
 
Description
    Variant of triSurfaceMesh that interpolates face-normals to obtain
    point normals.
 
    Note: when constructing from dictionary has optional parameters:
        - scale     : scaling factor.
        - tolerance : relative tolerance for doing intersections
                      (see triangle::intersection)
        - minQuality: discard triangles with low quality when getting normal
        - featureAngle: limit interpolation to current 'region' only.
                        Region limited by feature edges.
 
 
SourceFiles
    smoothTriSurfaceMesh.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef smoothTriSurfaceMesh_H
#define smoothTriSurfaceMesh_H
 
#include "triSurfaceMesh.H"
#include "PackedBoolList.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
                     Class smoothTriSurfaceMesh Declaration
\*---------------------------------------------------------------------------*/
 
class smoothTriSurfaceMesh
:
    public triSurfaceMesh
{
private:
 
        //- Edges with discontinuity
        bitSet isBorderEdge_;
 
        //- Points on border edges
        bitSet isPointOnBorderEdge_;
 
        //- Mark feature edges
        void calcFeatureEdges(const scalar featureAngle);
 
        //- Calculate local point normal
        vector pointNormal(const label, const label) const;
 
 
        //- Disallow default bitwise copy construct
        smoothTriSurfaceMesh(const smoothTriSurfaceMesh&) = delete;
 
        //- Disallow default bitwise assignment
        void operator=(const smoothTriSurfaceMesh&) = delete;
 
 
public:
 
    //- Runtime type information
    TypeName("smoothTriSurfaceMesh");
 
 
    // Constructors
 
        //- Construct read, specify feature angle
        smoothTriSurfaceMesh(const IOobject& io, const scalar featureAngle);
 
        //- Construct from IO and dictionary (used by searchableSurface).
        //  Dictionary may contain a 'scale' entry (eg, 0.001: mm -> m)
        smoothTriSurfaceMesh
        (
            const IOobject& io,
            const dictionary& dict
        );
 
 
    //- Destructor
    virtual ~smoothTriSurfaceMesh();
 
 
    // Member Functions
 
        //- From a set of points and indices get the normal
        virtual void getNormal
        (
            const List<pointIndexHit>&,
            vectorField& normal
        ) const;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //