transformPoints.C

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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
    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
 
Application
    transformPoints
 
Description
    Transform (translate, rotate, scale) the mesh points, and optionally also
    any vector and tensor fields.
 
Usage
    \b transformPoints "<transformations>" [OPTION]
 
    Supported transformations:
      - \par translate=<translation vector>
        Translational transformation by given vector
      - \par rotate=(<n1 vector> <n2 vector>)
        Rotational transformation from unit vector n1 to n2
      - \par Rx=<angle [deg] about x-axis>
        Rotational transformation by given angle about x-axis
      - \par Ry=<angle [deg] about y-axis>
        Rotational transformation by given angle about y-axis
      - \par Rz=<angle [deg] about z-axis>
        Rotational transformation by given angle about z-axis
      - \par Ra=<axis vector> <angle [deg] about axis>
        Rotational transformation by given angle about given axis
      - \par scale=<x-y-z scaling vector>
        Anisotropic scaling by the given vector in the x, y, z
        coordinate directions
 
    Options:
      - \par -rotateFields \n
        Additionally transform vector and tensor fields.
      - \par -pointZone <name> \n
        Only transform points in the given pointZone.
      - \par -pointSet <name> \n
        Only transform points in the given point set.
 
    Example usage:
        transformPoints \
            "translate=(-0.05 -0.05 0), \
            Rz=45, \
            translate=(0.05 0.05 0)"
 
See also
    Foam::transformer
    surfaceTransformPoints
 
\*---------------------------------------------------------------------------*/
 
#include "argList.H"
#include "fvMesh.H"
#include "volFields.H"
#include "surfaceFields.H"
#include "ReadFields.H"
#include "pointFields.H"
#include "pointSet.H"
#include "transformField.H"
#include "transformGeometricField.H"
 
using namespace Foam;
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
template<class GeoField>
void readAndRotateFields
(
    PtrList<GeoField>& flds,
    const fvMesh& mesh,
    const tensor& T,
    const IOobjectList& objects
)
{
    ReadFields(mesh, objects, flds);
    forAll(flds, i)
    {
        Info<< "Transforming " << flds[i].name() << endl;
        dimensionedTensor dimT("t", flds[i].dimensions(), T);
        transform(flds[i], dimT, flds[i]);
    }
}
 
 
void rotateFields
(
    const argList& args,
    const Time& runTime,
    const tensor& T
)
{
    #include "createSpecifiedMeshNoChangers.H"
 
    // Read objects in time directory
    IOobjectList objects(mesh, runTime.name());
 
    // Read vol fields.
    PtrList<volScalarField> vsFlds;
    readAndRotateFields(vsFlds, mesh, T, objects);
    PtrList<volVectorField> vvFlds;
    readAndRotateFields(vvFlds, mesh, T, objects);
    PtrList<volSphericalTensorField> vstFlds;
    readAndRotateFields(vstFlds, mesh, T, objects);
    PtrList<volSymmTensorField> vsymtFlds;
    readAndRotateFields(vsymtFlds, mesh, T, objects);
    PtrList<volTensorField> vtFlds;
    readAndRotateFields(vtFlds, mesh, T, objects);
 
    // Read surface fields.
    PtrList<surfaceScalarField> ssFlds;
    readAndRotateFields(ssFlds, mesh, T, objects);
    PtrList<surfaceVectorField> svFlds;
    readAndRotateFields(svFlds, mesh, T, objects);
    PtrList<surfaceSphericalTensorField> sstFlds;
    readAndRotateFields(sstFlds, mesh, T, objects);
    PtrList<surfaceSymmTensorField> ssymtFlds;
    readAndRotateFields(ssymtFlds, mesh, T, objects);
    PtrList<surfaceTensorField> stFlds;
    readAndRotateFields(stFlds, mesh, T, objects);
 
    mesh.write();
}
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
int main(int argc, char *argv[])
{
    argList::addNote
    (
        "Transforms a mesh by translation, rotation and/or scaling.\n"
        "The <transformations> are listed comma-separated in a string "
        "and executed in sequence.\n\n"
        "transformations:\n"
        "  translate=<vector>        "
        "translation by vector, e.g. (1 2 3)\n"
        "  rotate=(<n1> <n2>)        "
        "rotation from unit vector n1 to n2\n"
        "  Rx=<angle>                "
        "rotation by given angle [deg], e.g. 90, about x-axis\n"
        "  Ry=<angle>                "
        "rotation by given angle [deg] about y-axis\n"
        "  Rz=<angle>                "
        "rotation by given angle [deg] about z-axis\n"
        "  Ra=<axis vector> <angle>  "
        "rotation by given angle [deg] about specified axis\n"
        "  scale=<vector>            "
        "scale by factors from vector in x, y, z directions,\n"
        "                            "
        "e.g. (0.001 0.001 0.001) to scale from mm to m\n\n"
        "example:\n"
        "  transformPoints "
        "\"translate=(1.2 0 0), Rx=90, translate=(-1.2 0 0)\""
    );
 
    argList::validArgs.append("transformations");
 
    argList::addBoolOption
    (
        "rotateFields",
        "transform vector and tensor fields"
    );
 
    argList::addOption
    (
        "pointZone",
        "pointZone",
        "pointZone to limit the transformation to"
    );
 
    argList::addOption
    (
        "pointSet",
        "pointSet",
        "Point set to limit the transformation to"
    );
 
    #include "addMeshOption.H"
    #include "addRegionOption.H"
    #include "addAllRegionsOption.H"
    #include "setRootCase.H"
    #include "setMeshPath.H"
    #include "createTime.H"
 
    const string transformationString(args[1]);
 
    #include "createTransforms.H"
 
    #include "setRegionNames.H"
 
    const bool doRotateFields = args.optionFound("rotateFields");
 
    word pointZoneName = word::null;
    const bool doPointZone =
        args.optionReadIfPresent("pointZone", pointZoneName);
 
    word pointSetName = word::null;
    const bool doPointSet = args.optionReadIfPresent("pointSet", pointSetName);
 
    if (doRotateFields && (doPointZone || doPointSet))
    {
        FatalErrorInFunction
            << "Rotation of fields across the entire mesh, and limiting the "
            << "transformation of points to a set, cannot be done "
            << "simultaneously" << exit(FatalError);
    }
 
    forAll(regionNames, regioni)
    {
        const word& regionName = regionNames[regioni];
 
        const word& regionDir =
            regionName == polyMesh::defaultRegion
          ? word::null
          : regionName;
 
        const fileName meshDir(meshPath/regionDir/polyMesh::meshSubDir);
 
        pointIOField points
        (
            IOobject
            (
                "points",
                runTime.findInstance(meshDir, "points"),
                meshDir,
                runTime,
                IOobject::MUST_READ,
                IOobject::NO_WRITE,
                false
            )
        );
 
        if (doPointZone || doPointSet)
        {
            labelList zonePointIDs;
 
            if (doPointZone)
            {
                const polyMesh mesh
                (
                    IOobject
                    (
                        regionName,
                        runTime.name(),
                        meshPath,
                        runTime,
                        IOobject::MUST_READ
                    )
                );
 
                zonePointIDs = mesh.pointZones()[pointZoneName];
            }
            else
            {
                zonePointIDs = pointSet
                (
                    IOobject
                    (
                        pointSetName,
                        runTime.findInstance(meshDir/"sets", word::null),
                        polyMesh::meshSubDir/"sets",
                        runTime,
                        IOobject::MUST_READ,
                        IOobject::NO_WRITE,
                        false
                    )
                ).toc();
            }
 
            pointField zonePoints(UIndirectList<point>(points, zonePointIDs));
            transforms.transformPosition(zonePoints, zonePoints);
            UIndirectList<point>(points, zonePointIDs) = zonePoints;
        }
        else
        {
            transforms.transformPosition(points, 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();
 
        if (doRotateFields)
        {
            rotateFields(args, runTime, transforms.T());
        }
    }
 
    Info<< "End\n" << endl;
 
    return 0;
}
 
 
// ************************************************************************* //