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========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / 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::orientedSurface
Description
Given point flip all faces such that normals point in same direction.
SourceFiles
orientedSurface.C
\*---------------------------------------------------------------------------*/
#ifndef orientedSurface_H
#define orientedSurface_H
#include "triSurface.H"
#include "typeInfo.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
// Forward declaration of classes
class triSurfaceSearch;
/*---------------------------------------------------------------------------*\
Class orientedSurface Declaration
\*---------------------------------------------------------------------------*/
class orientedSurface
:
public triSurface
{
public:
// Data types
//- Enumeration listing whether face needs to be flipped.
enum sideStat
{
UNVISITED,
FLIP,
NOFLIP
};
private:
// Private Member Functions
//- Return true if edge is used in opposite order in faces
static bool consistentEdge
(
const edge& e,
const triSurface::FaceType& f0,
const triSurface::FaceType& f1
);
//- From changed faces get the changed edges
static labelList faceToEdge
(
const triSurface&,
const labelList& changedFaces
);
//- From changed edges check the orientation of the connected faces
// and flip them. Return changed faces.
static labelList edgeToFace
(
const triSurface&,
const labelList& changedEdges,
labelList& flip
);
//- Walk from face across connected faces. Change orientation to be
// consistent with startFacei.
static void walkSurface
(
const triSurface& s,
const label startFacei,
labelList& flipState
);
//- Given nearest point and face check orientation to nearest face
// and flip if necessary (only marked in flipState) and propagate.
static void propagateOrientation
(
const triSurface&,
const point& outsidePoint,
const bool orientOutside,
const label nearestFacei,
const point& nearestPt,
labelList& flipState
);
//- Find a face on zoneI and count number of intersections to determine
// orientation
static void findZoneSide
(
const triSurfaceSearch& surfSearches,
const labelList& faceZone,
const label zoneI,
const point& visiblePoint,
label& zoneFacei,
bool& isOutside
);
//- Given flipState reverse triangles of *this. Return true if
// anything flipped.
static bool flipSurface(triSurface& s, const labelList& flipState);
//- Make surface surface has consistent orientation across connected
// triangles.
static bool orientConsistent(triSurface& s);
public:
ClassName("orientedSurface");
// Constructors
//- Construct null
orientedSurface();
//- Construct from triSurface and sample point which is either
// outside (orientOutside = true) or inside (orientOutside = false).
// Uses orient.
orientedSurface
(
const triSurface&,
const point& samplePoint,
const bool orientOutside = true
);
//- Construct from triSurface. Calculates outside point as being
// outside the bounding box of the surface.
orientedSurface(const triSurface&, const bool orientOutside = true);
// Member Functions
//- Flip faces such that normals are consistent with point:
// orientOutside=true : point outside surface
// orientOutside=false : point inside surface
// Bases orientation on normal on nearest point (linear search) and
// walks to rest. Surface needs to be manifold.
static bool orient(triSurface&, const point&, const bool orientOutside);
//- Flip faces such that normals are consistent with point:
// orientOutside=true : point outside surface
// orientOutside=false : point inside surface
// Uses intersection count to orient. Handles open surfaces.
static bool orient
(
triSurface& s,
const triSurfaceSearch& querySurf,
const point& samplePoint,
const bool orientOutside
);
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //
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