datToFoam.C

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/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     | Website:  https://openfoam.org
    \\  /    A nd           | Copyright (C) 2011-2024 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
    datToFoam
 
Description
    Reads in a datToFoam mesh file and outputs a points file.  Used in
    conjunction with blockMesh.
 
\*---------------------------------------------------------------------------*/
 
#include "argList.H"
#include "Time.H"
#include "IFstream.H"
#include "OFstream.H"
#include "pointField.H"
 
using namespace Foam;
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
int main(int argc, char *argv[])
{
    argList::noParallel();
    argList::validArgs.append("dat file");
 
    argList args(argc, argv);
 
    if (!args.check())
    {
         FatalError.exit();
    }
 
    #include "createTime.H"
 
    std::ifstream plot3dFile(args.args()[1].c_str());
 
    string line;
    std::getline(plot3dFile, line);
    std::getline(plot3dFile, line);
 
    IStringStream Istring(line);
    word block;
    string zoneName;
    token punctuation;
    label iPoints;
    label jPoints;
 
    Istring >> block;
    Istring >> block;
    Istring >> zoneName;
    Istring >> punctuation;
    Istring >> block;
    Istring >> iPoints;
    Istring >> block;
    Istring >> jPoints;
 
    Info<< "Number of vertices in i direction = " << iPoints << endl
        << "Number of vertices in j direction = " << jPoints << endl;
 
    // We ignore the first layer of points in i and j the biconic meshes
    label nPointsij = (iPoints - 1)*(jPoints - 1);
 
    pointField points(nPointsij, Zero);
 
    for (direction comp = 0; comp < 2; comp++)
    {
        label p(0);
 
        for (label j = 0; j < jPoints; j++)
        {
            for (label i = 0; i < iPoints; i++)
            {
                double coord;
                plot3dFile >> coord;
 
                // if statement ignores the first layer in i and j
                if (i>0 && j>0)
                {
                    points[p++][comp] = coord;
                }
            }
        }
    }
 
    // correct error in biconic meshes
    forAll(points, i)
    {
        if (points[i][1] < 1e-07)
        {
            points[i][1] = 0.0;
        }
    }
 
    pointField pointsWedge(nPointsij*2, Zero);
 
    fileName pointsFile(runTime.path()/runTime.constant()/"points.tmp");
    OFstream pFile(pointsFile);
 
    scalar a(degToRad(0.1));
    tensor rotateZ =
        tensor
        (
            1.0, 0.0, 0.0,
            0.0, 1.0, 0.0,
            0.0, -::sin(a), ::cos(a)
        );
 
    forAll(points, i)
    {
        pointsWedge[i] = (rotateZ & points[i]);
        pointsWedge[i+nPointsij] = cmptMultiply
        (
            vector(1.0, 1.0, -1.0),
            pointsWedge[i]
        );
    }
 
    Info<< "Writing points to: " << nl
         << "    " << pointsFile << endl;
    pFile << pointsWedge;
 
    Info<< "End" << endl;
 
    return 0;
}
 
 
// ************************************************************************* //