cuttingSurfaceCuts.C

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/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | www.openfoam.com
     \\/     M anipulation  |
-------------------------------------------------------------------------------
    Copyright (C) 2018 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/>.
 
\*---------------------------------------------------------------------------*/
 
#include "cuttingSurface.H"
#include "fvMesh.H"
#include "volFields.H"
#include "pointFields.H"
 
// * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //
 
void Foam::cuttingSurface::calcCellCuts
(
    const fvMesh& fvm,
    scalarField& pointDist,
    bitSet& cellCuts
)
{
    const pointField& cc = fvm.C();
    const pointField& pts = fvm.points();
 
    const label nCells  = fvm.nCells();
    const label nPoints = fvm.nPoints();
 
    // The point distances
 
    List<pointIndexHit> nearest;
    surfPtr_().findNearest
    (
        pts,
        scalarField(nPoints, GREAT),
        nearest
    );
 
    vectorField norms;
    surfPtr_().getNormal(nearest, norms);
 
    pointDist.resize(nPoints);
 
    for (label i=0; i < nPoints; ++i)
    {
        const point diff(pts[i] - nearest[i].hitPoint());
 
        // Normal distance
        pointDist[i] = (diff & norms[i]);
    }
 
 
    if (cellCuts.size())
    {
        cellCuts.resize(nCells);    // safety
    }
    else
    {
        cellCuts.resize(nCells, true);
    }
 
 
    // Check based on cell distance
 
    surfPtr_().findNearest
    (
        cc,
        scalarField(cc.size(), GREAT),
        nearest
    );
 
 
    boundBox cellBb;
 
    for (const label celli : cellCuts)
    {
        cellBb.clear();
        cellBb.add(pts, fvm.cellPoints(celli));
 
        if (!cellBb.contains(nearest[celli].hitPoint()))
        {
            cellCuts.unset(celli);
        }
    }
 
 
    if (debug)
    {
        volScalarField cCuts
        (
            IOobject
            (
                "cuttingSurface.cellCuts",
                fvm.time().timeName(),
                fvm.time(),
                IOobject::NO_READ,
                IOobject::NO_WRITE,
                false
            ),
            fvm,
            dimensionedScalar(dimless, Zero)
        );
 
        for (const label celli : cellCuts)
        {
            cCuts[celli] = 1;
        }
 
        Pout<< "Writing cellCuts:" << cCuts.objectPath() << endl;
        cCuts.write();
 
        pointScalarField pDist
        (
            IOobject
            (
                "cuttingSurface.pointDistance",
                fvm.time().timeName(),
                fvm.time(),
                IOobject::NO_READ,
                IOobject::NO_WRITE,
                false
            ),
            pointMesh::New(fvm),
            dimensionedScalar(dimLength, Zero)
        );
        pDist.primitiveFieldRef() = pointDist;
 
        Pout<< "Writing point distance:" << pDist.objectPath() << endl;
        pDist.write();
    }
}
 
 
// ************************************************************************* //