ensightOutputCloud.C

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/*---------------------------------------------------------------------------*\
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  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
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    \\  /    A nd           | www.openfoam.com
     \\/     M anipulation  |
-------------------------------------------------------------------------------
    Copyright (C) 2016-2020 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 "ensightOutputCloud.H"
#include "fvMesh.H"
#include "Cloud.H"
#include "passiveParticle.H"
#include "pointField.H"
 
// * * * * * * * * * * * * * * * Local Functions * * * * * * * * * * * * * * //
 
namespace Foam
{
    //- Binary output
    static inline void writeMeasured
    (
        ensightFile& os,
        const pointField& points
    )
    {
        for (const point& p : points)
        {
            os.write(p.x());
            os.write(p.y());
            os.write(p.z());
        }
    }
 
    //- ASCII output. Id + position together
    static inline label writeMeasured
    (
        ensightFile& os,
        label pointId,
        const pointField& points
    )
    {
        for (const point& p : points)
        {
            os.write(++pointId, 8); // 1-index and an unusual width
            os.write(p.x());
            os.write(p.y());
            os.write(p.z());
            os.newline();
        }
 
        return pointId;
    }
 
} // End namespace Foam
 
 
// * * * * * * * * * * * * * * * Global Functions  * * * * * * * * * * * * * //
 
bool Foam::ensightOutput::writeCloudPositions
(
    const fvMesh& mesh,
    const word& cloudName,
    bool exists,
    autoPtr<ensightFile>& output,
    Pstream::commsTypes comm
)
{
    pointField positions;
 
    if (exists)
    {
        Cloud<passiveParticle> parcels(mesh, cloudName, false);
 
        positions.resize(parcels.size());
 
        auto outIter = positions.begin();
 
        for (const passiveParticle& p : parcels)
        {
            *outIter = p.position();
            ++outIter;
        }
    }
 
 
    // Total number of parcels on all processes
    const label nTotParcels = returnReduce(positions.size(), sumOp<label>());
 
    // Update the exists/not exists information (for return value)
    exists = nTotParcels;
 
    if (Pstream::master())
    {
        ensightFile& os = output();
 
        os.beginParticleCoordinates(nTotParcels);
        if (!exists)
        {
            return exists;  // DONE
        }
 
        if (os.format() == IOstream::BINARY)
        {
            // binary write is Ensight6 - first ids, then positions
 
            // 1-index
            for (label parcelId = 1; parcelId <= nTotParcels; ++parcelId)
            {
                os.write(parcelId);
            }
 
            // Master
            writeMeasured(os, positions);
 
            // Slaves
            for (const int slave : Pstream::subProcs())
            {
                IPstream fromSlave(comm, slave);
                pointField recv(fromSlave);
 
                writeMeasured(os, recv);
            }
        }
        else
        {
            // ASCII id + position together
            label parcelId = 0;
 
            // Master
            parcelId = writeMeasured(os, parcelId, positions);
 
            // Slaves
            for (const int slave : Pstream::subProcs())
            {
                IPstream fromSlave(comm, slave);
                pointField recv(fromSlave);
 
                parcelId = writeMeasured(os, parcelId, recv);
            }
        }
    }
    else if (nTotParcels)
    {
        // SLAVE, and data exist
        OPstream toMaster(comm, Pstream::masterNo());
 
        toMaster
            << positions;
    }
 
    return exists;
}
 
 
// ************************************************************************* //