flattenMesh.C

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/*---------------------------------------------------------------------------*\
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  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
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    \\  /    A nd           | Copyright (C) 2011-2022 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/>.
 
Application
    flattenMesh
 
Description
    Flattens the front and back planes of a 2D cartesian mesh.
 
\*---------------------------------------------------------------------------*/
 
#include "argList.H"
#include "Time.H"
#include "polyMesh.H"
#include "emptyPolyPatch.H"
#include "twoDPointCorrector.H"
 
using namespace Foam;
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
int main(int argc, char *argv[])
{
    #include "setRootCase.H"
    #include "createTime.H"
    #include "createPolyMesh.H"
 
    pointIOField points
    (
        IOobject
        (
            "points",
            runTime.findInstance(polyMesh::meshSubDir, "points"),
            polyMesh::meshSubDir,
            runTime,
            IOobject::MUST_READ,
            IOobject::NO_WRITE,
            false
        )
    );
 
    boundBox bb(points);
 
    Info<< "bounding box: min = " << bb.min()
        << " max = " << bb.max() << " meters."
        << endl;
 
 
    point midPoint = gAverage(points);
 
    const twoDPointCorrector& twoDCorr
    (
        twoDPointCorrector::New(mesh)
    );
 
    direction planeNormalCmpt = twoDCorr.normalDir();
 
    scalar midCmptVal = midPoint[planeNormalCmpt];
    scalar minCmptVal = bb.min()[planeNormalCmpt];
    scalar maxCmptVal = bb.max()[planeNormalCmpt];
 
    forAll(points, pointi)
    {
        if (points[pointi][planeNormalCmpt] < midCmptVal)
        {
            points[pointi][planeNormalCmpt] = minCmptVal;
        }
        else
        {
            points[pointi][planeNormalCmpt] = maxCmptVal;
        }
    }
 
    twoDCorr.correctPoints(points);
 
    // Set the precision of the points data to 10
    IOstream::defaultPrecision(max(10u, IOstream::defaultPrecision()));
 
    Info<< "Writing points into directory " << points.path() << nl << endl;
    points.write();
 
    Info<< "End\n" << endl;
 
    return 0;
}
 
 
// ************************************************************************* //