primitiveMeshCheckEdgeLength.C

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/*---------------------------------------------------------------------------*\
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  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
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     \\/     M anipulation  |
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    Copyright (C) 2011-2016 OpenFOAM Foundation
    Copyright (C) 2019-2022 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
    for more details.
 
    You should have received a copy of the GNU General Public License
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\*---------------------------------------------------------------------------*/
 
#include "primitiveMesh.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
bool Foam::primitiveMesh::checkEdgeLength
(
    const bool report,
    const scalar reportLenSqr,
    labelHashSet* setPtr
) const
{
    const pointField& points = this->points();
    const faceList& faces = this->faces();
 
    scalar minLenSqr = sqr(GREAT);
    scalar maxLenSqr = -sqr(GREAT);
 
    labelHashSet smallEdgeSet(nPoints()/100);
 
    forAll(faces, facei)
    {
        const face& f = faces[facei];
 
        forAll(f, fp)
        {
            label fp1 = f.fcIndex(fp);
 
            scalar magSqrE = magSqr(points[f[fp]] - points[f[fp1]]);
 
            if (magSqrE < reportLenSqr)
            {
                smallEdgeSet.insert(f[fp]);
                smallEdgeSet.insert(f[fp1]);
            }
 
            minLenSqr = min(minLenSqr, magSqrE);
            maxLenSqr = max(maxLenSqr, magSqrE);
        }
    }
 
    reduce(minLenSqr, minOp<scalar>());
    reduce(maxLenSqr, maxOp<scalar>());
 
    label nSmall = returnReduce(smallEdgeSet.size(), sumOp<label>());
 
    if (setPtr)
    {
        setPtr->transfer(smallEdgeSet);
    }
 
    if (nSmall > 0)
    {
        if (report)
        {
            Info<< "   *Edges too small, min/max edge length = "
                << sqrt(minLenSqr) << " " << sqrt(maxLenSqr)
                << ", number too small: " << nSmall << endl;
        }
 
        return true;
    }
 
    if (report)
    {
        Info<< "    Min/max edge length = "
            << sqrt(minLenSqr) << " " << sqrt(maxLenSqr) << " OK." << endl;
    }
 
    return false;
}
 
 
// ************************************************************************* //