patchWriter.C

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    This file is part of OpenFOAM.
 
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    under the terms of the GNU General Public License as published by
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#include "patchWriter.H"
#include "vtkWriteFieldOps.H"
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::patchWriter::patchWriter
(
    const vtkMesh& vMesh,
    const bool binary,
    const bool nearCellValue,
    const fileName& fName,
    const labelList& patchIDs
)
:
    vMesh_(vMesh),
    binary_(binary),
    nearCellValue_(nearCellValue),
    fName_(fName),
    patchIndices_(patchIDs),
    os_(fName.c_str())
{
    const fvMesh& mesh = vMesh_.mesh();
    const polyBoundaryMesh& patches = mesh.boundaryMesh();
 
    // Write header
    if (patchIndices_.size() == 1)
    {
        vtkWriteOps::writeHeader
        (
            os_,
            binary_, patches[patchIndices_[0]].name()
        );
    }
    else
    {
        vtkWriteOps::writeHeader(os_, binary_, "patches");
    }
    os_ << "DATASET POLYDATA" << std::endl;
 
    // Write topology
    nPoints_ = 0;
    nFaces_ = 0;
    label nFaceVerts = 0;
 
    forAll(patchIndices_, i)
    {
        const polyPatch& pp = patches[patchIndices_[i]];
 
        nPoints_ += pp.nPoints();
        nFaces_ += pp.size();
 
        forAll(pp, facei)
        {
            nFaceVerts += pp[facei].size() + 1;
        }
    }
 
    os_ << "POINTS " << nPoints_ << " float" << std::endl;
 
    DynamicList<floatScalar> ptField(3*nPoints_);
 
    forAll(patchIndices_, i)
    {
        const polyPatch& pp = patches[patchIndices_[i]];
 
        vtkWriteOps::insert(pp.localPoints(), ptField);
    }
    vtkWriteOps::write(os_, binary_, ptField);
 
    os_ << "POLYGONS " << nFaces_ << ' ' << nFaceVerts << std::endl;
 
    DynamicList<label> vertLabels(nFaceVerts);
 
    label offset = 0;
 
    forAll(patchIndices_, i)
    {
        const polyPatch& pp = patches[patchIndices_[i]];
 
        forAll(pp, facei)
        {
            const face& f = pp.localFaces()[facei];
 
            vertLabels.append(f.size());
            vtkWriteOps::insert(f + offset, vertLabels);
        }
        offset += pp.nPoints();
    }
    vtkWriteOps::write(os_, binary_, vertLabels);
}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
void Foam::patchWriter::writePatchIndices()
{
    const fvMesh& mesh = vMesh_.mesh();
 
    DynamicList<floatScalar> fField(nFaces_);
 
    os_ << "patchID 1 " << nFaces_ << " float" << std::endl;
 
    forAll(patchIndices_, i)
    {
        label patchi = patchIndices_[i];
 
        const polyPatch& pp = mesh.boundaryMesh()[patchi];
 
        if (!isA<emptyPolyPatch>(pp))
        {
            vtkWriteOps::insert(scalarField(pp.size(), patchi), fField);
        }
    }
    vtkWriteOps::write(os_, binary_, fField);
}
 
 
// ************************************************************************* //