meshSurfaceEdgeExtractor.C

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/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | cfMesh: A library for mesh generation
   \\    /   O peration     |
    \\  /    A nd           | Author: Franjo Juretic (franjo.juretic@c-fields.com)
     \\/     M anipulation  | Copyright (C) Creative Fields, Ltd.
-------------------------------------------------------------------------------
License
    This file is part of cfMesh.
 
    cfMesh 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.
 
    cfMesh 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 cfMesh.  If not, see <http://www.gnu.org/licenses/>.
 
Description
 
\*---------------------------------------------------------------------------*/
 
#include "meshSurfaceEdgeExtractor.H"
#include "demandDrivenData.H"
 
// #define DEBUGSearch
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
// Construct from mesh, octree, regions for boundary vertices
meshSurfaceEdgeExtractor::meshSurfaceEdgeExtractor
(
    polyMeshGen& mesh,
    const meshOctree& octree,
    const labelList& pointRegion
)
:
    mesh_(mesh),
    nPoints_(mesh.points().size()),
    boundaryCell_(mesh.cells().size(), false),
    nFacesInCell_(mesh.cells().size(), direction(0)),
    meshOctree_(octree),
    pointRegions_(pointRegion.size())
{
    forAll(pointRegion, pointI)
        if( pointRegion[pointI] != -1 )
            pointRegions_.append(pointI, pointRegion[pointI]);
 
    createEdgeVertices();
 
    removeOldBoundaryFaces();
 
    createBoundaryFaces();
}
 
// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
 
meshSurfaceEdgeExtractor::~meshSurfaceEdgeExtractor()
{
}
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
void meshSurfaceEdgeExtractor::removeOldBoundaryFaces()
{
    const labelList neighbour_ = mesh_.neighbour();
    polyMeshGenModifier meshModifier_(mesh_);
    cellListPMG& cells_ = meshModifier_.cellsAccess();
 
    forAll(cells_, cellI)
    {
        const cell& c = cells_[cellI];
 
        cell newC(c);
 
        forAll(c, fI)
            if( neighbour_[c[fI]] != -1 )
            {
                boundaryCell_[cellI] = true;
                newC[nFacesInCell_[cellI]++] = c[fI];
            }
 
        if( nFacesInCell_[cellI] < direction(c.size()) )
        {
            newC.setSize(nFacesInCell_[cellI]);
 
            cells_[cellI] = newC;
        };
    }
 
    PtrList<boundaryPatch>& boundaries = meshModifier_.boundariesAccess();
    boundaries.setSize(1);
    boundaries[0].patchSize() = 0;
    meshModifier_.facesAccess().setSize(boundaries[0].patchStart());
}
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// ************************************************************************* //