1110 lines
28 KiB
C
1110 lines
28 KiB
C
/*---------------------------------------------------------------------------*\
|
|
========= |
|
|
\\ / F ield | foam-extend: Open Source CFD
|
|
\\ / O peration | Version: 3.2
|
|
\\ / A nd | Web: http://www.foam-extend.org
|
|
\\/ M anipulation | For copyright notice see file Copyright
|
|
-------------------------------------------------------------------------------
|
|
License
|
|
This file is part of foam-extend.
|
|
|
|
foam-extend 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.
|
|
|
|
foam-extend 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 foam-extend. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
Description
|
|
Reads .msh file as written by Gmsh.
|
|
|
|
Needs surface elements on mesh to be present and aligned with outside faces
|
|
of the mesh. I.e. if the mesh is hexes, the outside faces need to be quads
|
|
|
|
Note: There is something seriously wrong with the ordering written in the
|
|
.msh file. Normal operation is to check the ordering and invert prisms
|
|
and hexes if found to be wrong way round.
|
|
Use the -keepOrientation to keep the raw information.
|
|
|
|
Note: The code now uses the element (cell,face) physical region id number
|
|
to create cell zones and faces zones (similar to
|
|
fluentMeshWithInternalFaces).
|
|
|
|
A use of the cell zone information, is for field initialization with the
|
|
"setFields" utility. see the classes: topoSetSource, zoneToCell.
|
|
\*---------------------------------------------------------------------------*/
|
|
|
|
#include "argList.H"
|
|
#include "polyMesh.H"
|
|
#include "Time.H"
|
|
#include "polyMesh.H"
|
|
#include "IFstream.H"
|
|
#include "cellModeller.H"
|
|
#include "repatchPolyTopoChanger.H"
|
|
#include "cellSet.H"
|
|
#include "faceSet.H"
|
|
|
|
using namespace Foam;
|
|
|
|
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
|
|
|
|
// Element type numbers
|
|
static label MSHTRI = 2;
|
|
static label MSHQUAD = 3;
|
|
static label MSHTET = 4;
|
|
static label MSHPYR = 7;
|
|
static label MSHPRISM = 6;
|
|
static label MSHHEX = 5;
|
|
|
|
|
|
// Skips till end of section. Returns false if end of file.
|
|
bool skipSection(IFstream& inFile)
|
|
{
|
|
string line;
|
|
do
|
|
{
|
|
inFile.getLine(line);
|
|
|
|
if (!inFile.good())
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
while (line.size() < 4 || line.substr(0, 4) != "$End");
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
void renumber
|
|
(
|
|
const Map<label>& mshToFoam,
|
|
labelList& labels
|
|
)
|
|
{
|
|
forAll(labels, labelI)
|
|
{
|
|
labels[labelI] = mshToFoam[labels[labelI]];
|
|
}
|
|
}
|
|
|
|
|
|
// Find face in pp which uses all vertices in meshF (in mesh point labels)
|
|
label findFace(const primitivePatch& pp, const labelList& meshF)
|
|
{
|
|
const Map<label>& meshPointMap = pp.meshPointMap();
|
|
|
|
// meshF[0] in pp labels.
|
|
if (!meshPointMap.found(meshF[0]))
|
|
{
|
|
Warning<< "Not using gmsh face " << meshF
|
|
<< " since zero vertex is not on boundary of polyMesh" << endl;
|
|
return -1;
|
|
}
|
|
|
|
// Find faces using first point
|
|
const labelList& pFaces = pp.pointFaces()[meshPointMap[meshF[0]]];
|
|
|
|
// Go through all these faces and check if there is one which uses all of
|
|
// meshF vertices (in any order ;-)
|
|
forAll(pFaces, i)
|
|
{
|
|
label faceI = pFaces[i];
|
|
|
|
const face& f = pp[faceI];
|
|
|
|
// Count uses of vertices of meshF for f
|
|
label nMatched = 0;
|
|
|
|
forAll(f, fp)
|
|
{
|
|
if (findIndex(meshF, f[fp]) != -1)
|
|
{
|
|
nMatched++;
|
|
}
|
|
}
|
|
|
|
if (nMatched == meshF.size())
|
|
{
|
|
return faceI;
|
|
}
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
|
|
// Same but find internal face. Expensive addressing.
|
|
label findInternalFace(const primitiveMesh& mesh, const labelList& meshF)
|
|
{
|
|
const labelList& pFaces = mesh.pointFaces()[meshF[0]];
|
|
|
|
forAll(pFaces, i)
|
|
{
|
|
label faceI = pFaces[i];
|
|
|
|
const face& f = mesh.faces()[faceI];
|
|
|
|
// Count uses of vertices of meshF for f
|
|
label nMatched = 0;
|
|
|
|
forAll(f, fp)
|
|
{
|
|
if (findIndex(meshF, f[fp]) != -1)
|
|
{
|
|
nMatched++;
|
|
}
|
|
}
|
|
|
|
if (nMatched == meshF.size())
|
|
{
|
|
return faceI;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
|
|
// Determine whether cell is inside-out by checking for any wrong-oriented
|
|
// face.
|
|
bool correctOrientation(const pointField& points, const cellShape& shape)
|
|
{
|
|
// Get centre of shape.
|
|
point cc(shape.centre(points));
|
|
|
|
// Get outwards pointing faces.
|
|
faceList faces(shape.faces());
|
|
|
|
forAll(faces, i)
|
|
{
|
|
const face& f = faces[i];
|
|
|
|
vector n(f.normal(points));
|
|
|
|
// Check if vector from any point on face to cc points outwards
|
|
if (((points[f[0]] - cc) & n) < 0)
|
|
{
|
|
// Incorrectly oriented
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
void storeCellInZone
|
|
(
|
|
const label regPhys,
|
|
const label cellI,
|
|
Map<label>& physToZone,
|
|
|
|
labelList& zoneToPhys,
|
|
List<DynamicList<label> >& zoneCells
|
|
)
|
|
{
|
|
Map<label>::const_iterator zoneFnd = physToZone.find(regPhys);
|
|
|
|
if (zoneFnd == physToZone.end())
|
|
{
|
|
// New region. Allocate zone for it.
|
|
label zoneI = zoneCells.size();
|
|
zoneCells.setSize(zoneI+1);
|
|
zoneToPhys.setSize(zoneI+1);
|
|
|
|
Info<< "Mapping region " << regPhys << " to Foam cellZone "
|
|
<< zoneI << endl;
|
|
physToZone.insert(regPhys, zoneI);
|
|
|
|
zoneToPhys[zoneI] = regPhys;
|
|
zoneCells[zoneI].append(cellI);
|
|
}
|
|
else
|
|
{
|
|
// Existing zone for region
|
|
zoneCells[zoneFnd()].append(cellI);
|
|
}
|
|
}
|
|
|
|
|
|
// Reads points and map
|
|
void readPoints(IFstream& inFile, pointField& points, Map<label>& mshToFoam)
|
|
{
|
|
Info<< "Starting to read points at line " << inFile.lineNumber() << endl;
|
|
|
|
string line;
|
|
inFile.getLine(line);
|
|
IStringStream lineStr(line);
|
|
|
|
label nVerts;
|
|
lineStr >> nVerts;
|
|
|
|
Info<< "Vertices to be read:" << nVerts << endl;
|
|
|
|
points.setSize(nVerts);
|
|
mshToFoam.resize(2*nVerts);
|
|
|
|
for (label pointI = 0; pointI < nVerts; pointI++)
|
|
{
|
|
label mshLabel;
|
|
scalar xVal, yVal, zVal;
|
|
|
|
string line;
|
|
inFile.getLine(line);
|
|
IStringStream lineStr(line);
|
|
|
|
lineStr >> mshLabel >> xVal >> yVal >> zVal;
|
|
|
|
point& pt = points[pointI];
|
|
|
|
pt.x() = xVal;
|
|
pt.y() = yVal;
|
|
pt.z() = zVal;
|
|
|
|
mshToFoam.insert(mshLabel, pointI);
|
|
}
|
|
|
|
Info<< "Vertices read:" << mshToFoam.size() << endl;
|
|
|
|
inFile.getLine(line);
|
|
IStringStream tagStr(line);
|
|
word tag(tagStr);
|
|
|
|
if (tag != "$ENDNOD" && tag != "$EndNodes")
|
|
{
|
|
FatalErrorIn("readPoints(..)")
|
|
<< "Did not find $ENDNOD tag on line "
|
|
<< inFile.lineNumber() << exit(FatalError);
|
|
}
|
|
Info<< endl;
|
|
}
|
|
|
|
|
|
// Reads physical names
|
|
void readPhysNames(IFstream& inFile, Map<word>& physicalNames)
|
|
{
|
|
Info<< "Starting to read physical names at line " << inFile.lineNumber()
|
|
<< endl;
|
|
|
|
string line;
|
|
inFile.getLine(line);
|
|
IStringStream lineStr(line);
|
|
|
|
label nNames;
|
|
lineStr >> nNames;
|
|
|
|
Info<< "Physical names:" << nNames << endl;
|
|
|
|
physicalNames.resize(nNames);
|
|
|
|
for (label i = 0; i < nNames; i++)
|
|
{
|
|
label regionI;
|
|
string regionName;
|
|
|
|
string line;
|
|
inFile.getLine(line);
|
|
IStringStream lineStr(line);
|
|
label nSpaces = lineStr.str().count(' ');
|
|
|
|
if(nSpaces == 1)
|
|
{
|
|
lineStr >> regionI >> regionName;
|
|
|
|
Info<< " " << regionI << '\t'
|
|
<< string::validate<word>(regionName) << endl;
|
|
}
|
|
else if(nSpaces == 2)
|
|
{
|
|
// >= Gmsh2.4 physical types has tag in front.
|
|
label physType;
|
|
lineStr >> physType >> regionI >> regionName;
|
|
if (physType == 1)
|
|
{
|
|
Info<< " " << "Line " << regionI << '\t'
|
|
<< string::validate<word>(regionName) << endl;
|
|
}
|
|
else if (physType == 2)
|
|
{
|
|
Info<< " " << "Surface " << regionI << '\t'
|
|
<< string::validate<word>(regionName) << endl;
|
|
}
|
|
else if (physType == 3)
|
|
{
|
|
Info<< " " << "Volume " << regionI << '\t'
|
|
<< string::validate<word>(regionName) << endl;
|
|
}
|
|
}
|
|
|
|
physicalNames.insert(regionI, string::validate<word>(regionName));
|
|
}
|
|
|
|
inFile.getLine(line);
|
|
IStringStream tagStr(line);
|
|
word tag(tagStr);
|
|
|
|
if (tag != "$EndPhysicalNames")
|
|
{
|
|
FatalErrorIn("readPhysicalNames(..)")
|
|
<< "Did not find $EndPhysicalNames tag on line "
|
|
<< inFile.lineNumber() << exit(FatalError);
|
|
}
|
|
Info<< endl;
|
|
}
|
|
|
|
|
|
// Reads cells and patch faces
|
|
void readCells
|
|
(
|
|
const bool version2Format,
|
|
const bool keepOrientation,
|
|
const pointField& points,
|
|
const Map<label>& mshToFoam,
|
|
IFstream& inFile,
|
|
cellShapeList& cells,
|
|
|
|
labelList& patchToPhys,
|
|
List<DynamicList<face> >& patchFaces,
|
|
|
|
labelList& zoneToPhys,
|
|
List<DynamicList<label> >& zoneCells
|
|
)
|
|
{
|
|
Info<< "Starting to read cells at line " << inFile.lineNumber() << endl;
|
|
|
|
const cellModel& hex = *(cellModeller::lookup("hex"));
|
|
const cellModel& prism = *(cellModeller::lookup("prism"));
|
|
const cellModel& pyr = *(cellModeller::lookup("pyr"));
|
|
const cellModel& tet = *(cellModeller::lookup("tet"));
|
|
|
|
face triPoints(3);
|
|
face quadPoints(4);
|
|
labelList tetPoints(4);
|
|
labelList pyrPoints(5);
|
|
labelList prismPoints(6);
|
|
labelList hexPoints(8);
|
|
|
|
|
|
string line;
|
|
inFile.getLine(line);
|
|
IStringStream lineStr(line);
|
|
|
|
label nElems;
|
|
lineStr >> nElems;
|
|
|
|
Info<< "Cells to be read:" << nElems << endl << endl;
|
|
|
|
|
|
// Storage for all cells. Too big. Shrink later
|
|
cells.setSize(nElems);
|
|
|
|
label cellI = 0;
|
|
label nTet = 0;
|
|
label nPyr = 0;
|
|
label nPrism = 0;
|
|
label nHex = 0;
|
|
|
|
|
|
// From gmsh physical region to Foam patch
|
|
Map<label> physToPatch;
|
|
|
|
// From gmsh physical region to Foam cellZone
|
|
Map<label> physToZone;
|
|
|
|
|
|
for (label elemI = 0; elemI < nElems; elemI++)
|
|
{
|
|
string line;
|
|
inFile.getLine(line);
|
|
IStringStream lineStr(line);
|
|
|
|
label elmNumber, elmType, regPhys;
|
|
|
|
if (version2Format)
|
|
{
|
|
lineStr >> elmNumber >> elmType;
|
|
|
|
label nTags;
|
|
lineStr>> nTags;
|
|
|
|
label regElem, partition;
|
|
|
|
if (nTags == 3)
|
|
{
|
|
lineStr >> regPhys >> regElem >> partition;
|
|
}
|
|
else if (nTags == 2)
|
|
{
|
|
lineStr >> regPhys >> regElem;
|
|
}
|
|
else
|
|
{
|
|
regPhys = 0;
|
|
for (label i = 0; i < nTags; i++)
|
|
{
|
|
label dummy;
|
|
lineStr>> dummy;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
label regElem, nNodes;
|
|
lineStr >> elmNumber >> elmType >> regPhys >> regElem >> nNodes;
|
|
}
|
|
|
|
// regPhys on surface elements is region number.
|
|
|
|
if (elmType == MSHTRI)
|
|
{
|
|
lineStr >> triPoints[0] >> triPoints[1] >> triPoints[2];
|
|
|
|
renumber(mshToFoam, triPoints);
|
|
|
|
Map<label>::iterator regFnd = physToPatch.find(regPhys);
|
|
|
|
label patchI = -1;
|
|
if (regFnd == physToPatch.end())
|
|
{
|
|
// New region. Allocate patch for it.
|
|
patchI = patchFaces.size();
|
|
|
|
patchFaces.setSize(patchI + 1);
|
|
patchToPhys.setSize(patchI + 1);
|
|
|
|
Info<< "Mapping region " << regPhys << " to Foam patch "
|
|
<< patchI << endl;
|
|
physToPatch.insert(regPhys, patchI);
|
|
patchToPhys[patchI] = regPhys;
|
|
}
|
|
else
|
|
{
|
|
// Existing patch for region
|
|
patchI = regFnd();
|
|
}
|
|
|
|
// Add triangle to correct patchFaces.
|
|
patchFaces[patchI].append(triPoints);
|
|
}
|
|
else if (elmType == MSHQUAD)
|
|
{
|
|
lineStr
|
|
>> quadPoints[0] >> quadPoints[1] >> quadPoints[2]
|
|
>> quadPoints[3];
|
|
|
|
renumber(mshToFoam, quadPoints);
|
|
|
|
Map<label>::iterator regFnd = physToPatch.find(regPhys);
|
|
|
|
label patchI = -1;
|
|
if (regFnd == physToPatch.end())
|
|
{
|
|
// New region. Allocate patch for it.
|
|
patchI = patchFaces.size();
|
|
|
|
patchFaces.setSize(patchI + 1);
|
|
patchToPhys.setSize(patchI + 1);
|
|
|
|
Info<< "Mapping region " << regPhys << " to Foam patch "
|
|
<< patchI << endl;
|
|
physToPatch.insert(regPhys, patchI);
|
|
patchToPhys[patchI] = regPhys;
|
|
}
|
|
else
|
|
{
|
|
// Existing patch for region
|
|
patchI = regFnd();
|
|
}
|
|
|
|
// Add quad to correct patchFaces.
|
|
patchFaces[patchI].append(quadPoints);
|
|
}
|
|
else if (elmType == MSHTET)
|
|
{
|
|
storeCellInZone
|
|
(
|
|
regPhys,
|
|
cellI,
|
|
physToZone,
|
|
zoneToPhys,
|
|
zoneCells
|
|
);
|
|
|
|
lineStr
|
|
>> tetPoints[0] >> tetPoints[1] >> tetPoints[2]
|
|
>> tetPoints[3];
|
|
|
|
renumber(mshToFoam, tetPoints);
|
|
|
|
cells[cellI++] = cellShape(tet, tetPoints);
|
|
|
|
nTet++;
|
|
}
|
|
else if (elmType == MSHPYR)
|
|
{
|
|
storeCellInZone
|
|
(
|
|
regPhys,
|
|
cellI,
|
|
physToZone,
|
|
zoneToPhys,
|
|
zoneCells
|
|
);
|
|
|
|
lineStr
|
|
>> pyrPoints[0] >> pyrPoints[1] >> pyrPoints[2]
|
|
>> pyrPoints[3] >> pyrPoints[4];
|
|
|
|
renumber(mshToFoam, pyrPoints);
|
|
|
|
cells[cellI++] = cellShape(pyr, pyrPoints);
|
|
|
|
nPyr++;
|
|
}
|
|
else if (elmType == MSHPRISM)
|
|
{
|
|
storeCellInZone
|
|
(
|
|
regPhys,
|
|
cellI,
|
|
physToZone,
|
|
zoneToPhys,
|
|
zoneCells
|
|
);
|
|
|
|
lineStr
|
|
>> prismPoints[0] >> prismPoints[1] >> prismPoints[2]
|
|
>> prismPoints[3] >> prismPoints[4] >> prismPoints[5];
|
|
|
|
renumber(mshToFoam, prismPoints);
|
|
|
|
cells[cellI] = cellShape(prism, prismPoints);
|
|
|
|
const cellShape& cell = cells[cellI];
|
|
|
|
if (!keepOrientation && !correctOrientation(points, cell))
|
|
{
|
|
Info<< "Inverting prism " << cellI << endl;
|
|
// Reorder prism.
|
|
prismPoints[0] = cell[0];
|
|
prismPoints[1] = cell[2];
|
|
prismPoints[2] = cell[1];
|
|
prismPoints[3] = cell[3];
|
|
prismPoints[4] = cell[4];
|
|
prismPoints[5] = cell[5];
|
|
|
|
cells[cellI] = cellShape(prism, prismPoints);
|
|
}
|
|
|
|
cellI++;
|
|
|
|
nPrism++;
|
|
}
|
|
else if (elmType == MSHHEX)
|
|
{
|
|
storeCellInZone
|
|
(
|
|
regPhys,
|
|
cellI,
|
|
physToZone,
|
|
zoneToPhys,
|
|
zoneCells
|
|
);
|
|
|
|
lineStr
|
|
>> hexPoints[0] >> hexPoints[1]
|
|
>> hexPoints[2] >> hexPoints[3]
|
|
>> hexPoints[4] >> hexPoints[5]
|
|
>> hexPoints[6] >> hexPoints[7];
|
|
|
|
renumber(mshToFoam, hexPoints);
|
|
|
|
cells[cellI] = cellShape(hex, hexPoints);
|
|
|
|
const cellShape& cell = cells[cellI];
|
|
|
|
if (!keepOrientation && !correctOrientation(points, cell))
|
|
{
|
|
Info<< "Inverting hex " << cellI << endl;
|
|
// Reorder hex.
|
|
hexPoints[0] = cell[4];
|
|
hexPoints[1] = cell[5];
|
|
hexPoints[2] = cell[6];
|
|
hexPoints[3] = cell[7];
|
|
hexPoints[4] = cell[0];
|
|
hexPoints[5] = cell[1];
|
|
hexPoints[6] = cell[2];
|
|
hexPoints[7] = cell[3];
|
|
|
|
cells[cellI] = cellShape(hex, hexPoints);
|
|
}
|
|
|
|
cellI++;
|
|
|
|
nHex++;
|
|
}
|
|
else
|
|
{
|
|
Info<< "Unhandled element " << elmType << " at line "
|
|
<< inFile.lineNumber() << endl;
|
|
}
|
|
}
|
|
|
|
|
|
inFile.getLine(line);
|
|
IStringStream tagStr(line);
|
|
word tag(tagStr);
|
|
|
|
if (tag != "$ENDELM" && tag != "$EndElements")
|
|
{
|
|
FatalErrorIn("readCells(..)")
|
|
<< "Did not find $ENDELM tag on line "
|
|
<< inFile.lineNumber() << exit(FatalError);
|
|
}
|
|
|
|
|
|
cells.setSize(cellI);
|
|
|
|
forAll(patchFaces, patchI)
|
|
{
|
|
patchFaces[patchI].shrink();
|
|
}
|
|
|
|
|
|
Info<< "Cells:" << endl
|
|
<< " total:" << cells.size() << endl
|
|
<< " hex :" << nHex << endl
|
|
<< " prism:" << nPrism << endl
|
|
<< " pyr :" << nPyr << endl
|
|
<< " tet :" << nTet << endl
|
|
<< endl;
|
|
|
|
if (cells.size() == 0)
|
|
{
|
|
FatalErrorIn("readCells(..)")
|
|
<< "No cells read from file " << inFile.name() << nl
|
|
<< "Does your file specify any 3D elements (hex=" << MSHHEX
|
|
<< ", prism=" << MSHPRISM << ", pyramid=" << MSHPYR
|
|
<< ", tet=" << MSHTET << ")?" << nl
|
|
<< "Perhaps you have not exported the 3D elements?"
|
|
<< exit(FatalError);
|
|
}
|
|
|
|
Info<< "CellZones:" << nl
|
|
<< "Zone\tSize" << endl;
|
|
|
|
forAll(zoneCells, zoneI)
|
|
{
|
|
zoneCells[zoneI].shrink();
|
|
|
|
const labelList& zCells = zoneCells[zoneI];
|
|
|
|
if (zCells.size())
|
|
{
|
|
Info<< " " << zoneI << '\t' << zCells.size() << endl;
|
|
}
|
|
}
|
|
Info<< endl;
|
|
}
|
|
|
|
// Simplified version of the function from createPatch utility.
|
|
void removeEmptyPatches(polyMesh& mesh)
|
|
{
|
|
Info<< "\n";
|
|
|
|
const polyBoundaryMesh& patches = mesh.boundaryMesh();
|
|
|
|
DynamicList<polyPatch*> nonEmptyPatches(patches.size());
|
|
|
|
forAll(patches, idx)
|
|
{
|
|
const polyPatch& pp = patches[idx];
|
|
|
|
if (pp.size() > 0)
|
|
{
|
|
nonEmptyPatches.append
|
|
(
|
|
pp.clone
|
|
(
|
|
patches,
|
|
nonEmptyPatches.size(),
|
|
pp.size(),
|
|
pp.start()
|
|
).ptr()
|
|
);
|
|
}
|
|
else
|
|
{
|
|
Info<< "Removing empty patch " << pp.name() << endl;
|
|
}
|
|
}
|
|
|
|
if (patches.size() != nonEmptyPatches.size())
|
|
{
|
|
nonEmptyPatches.shrink();
|
|
mesh.removeBoundary();
|
|
mesh.addPatches(nonEmptyPatches);
|
|
}
|
|
|
|
Info<< "\n";
|
|
}
|
|
|
|
|
|
// Main program:
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
argList::noParallel();
|
|
argList::validArgs.append(".msh file");
|
|
argList::validOptions.insert("keepOrientation", "");
|
|
|
|
# include "setRootCase.H"
|
|
# include "createTime.H"
|
|
|
|
fileName mshName(args.additionalArgs()[0]);
|
|
|
|
bool keepOrientation = args.optionFound("keepOrientation");
|
|
|
|
// Storage for points
|
|
pointField points;
|
|
Map<label> mshToFoam;
|
|
|
|
// Storage for all cells.
|
|
cellShapeList cells;
|
|
|
|
// Map from patch to gmsh physical region
|
|
labelList patchToPhys;
|
|
// Storage for patch faces.
|
|
List<DynamicList<face> > patchFaces(0);
|
|
|
|
// Map from cellZone to gmsh physical region
|
|
labelList zoneToPhys;
|
|
// Storage for cell zones.
|
|
List<DynamicList<label> > zoneCells(0);
|
|
|
|
// Name per physical region
|
|
Map<word> physicalNames;
|
|
|
|
// Version 1 or 2 format
|
|
bool version2Format = false;
|
|
|
|
|
|
IFstream inFile(mshName);
|
|
|
|
while (inFile.good())
|
|
{
|
|
string line;
|
|
inFile.getLine(line);
|
|
IStringStream lineStr(line);
|
|
|
|
word tag(lineStr);
|
|
|
|
if (tag == "$MeshFormat")
|
|
{
|
|
Info<< "Found $MeshFormat tag; assuming version 2 file format."
|
|
<< endl;
|
|
version2Format = true;
|
|
|
|
if (!skipSection(inFile))
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
else if (tag == "$PhysicalNames")
|
|
{
|
|
readPhysNames(inFile, physicalNames);
|
|
}
|
|
else if (tag == "$NOD" || tag == "$Nodes")
|
|
{
|
|
readPoints(inFile, points, mshToFoam);
|
|
}
|
|
else if (tag == "$ELM" || tag == "$Elements")
|
|
{
|
|
readCells
|
|
(
|
|
version2Format,
|
|
keepOrientation,
|
|
points,
|
|
mshToFoam,
|
|
inFile,
|
|
cells,
|
|
patchToPhys,
|
|
patchFaces,
|
|
zoneToPhys,
|
|
zoneCells
|
|
);
|
|
}
|
|
else
|
|
{
|
|
Info<< "Skipping tag " << tag << " at line "
|
|
<< inFile.lineNumber()
|
|
<< endl;
|
|
|
|
if (!skipSection(inFile))
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
label nValidCellZones = 0;
|
|
|
|
forAll(zoneCells, zoneI)
|
|
{
|
|
if (zoneCells[zoneI].size())
|
|
{
|
|
nValidCellZones++;
|
|
}
|
|
}
|
|
|
|
|
|
// Problem is that the orientation of the patchFaces does not have to
|
|
// be consistent with the outwards orientation of the mesh faces. So
|
|
// we have to construct the mesh in two stages:
|
|
// 1. define mesh with all boundary faces in one patch
|
|
// 2. use the read patchFaces to find the corresponding boundary face
|
|
// and repatch it.
|
|
|
|
|
|
// Create correct number of patches
|
|
// (but without any faces in it)
|
|
faceListList boundaryFaces(patchFaces.size());
|
|
|
|
wordList boundaryPatchNames(boundaryFaces.size());
|
|
|
|
forAll(boundaryPatchNames, patchI)
|
|
{
|
|
label physReg = patchToPhys[patchI];
|
|
|
|
Map<word>::const_iterator iter = physicalNames.find(physReg);
|
|
|
|
if (iter != physicalNames.end())
|
|
{
|
|
boundaryPatchNames[patchI] = iter();
|
|
}
|
|
else
|
|
{
|
|
boundaryPatchNames[patchI] = word("patch") + name(patchI);
|
|
}
|
|
Info<< "Patch " << patchI << " gets name "
|
|
<< boundaryPatchNames[patchI] << endl;
|
|
}
|
|
Info<< endl;
|
|
|
|
wordList boundaryPatchTypes(boundaryFaces.size(), polyPatch::typeName);
|
|
word defaultFacesName = "defaultFaces";
|
|
word defaultFacesType = polyPatch::typeName;
|
|
wordList boundaryPatchPhysicalTypes
|
|
(
|
|
boundaryFaces.size(),
|
|
polyPatch::typeName
|
|
);
|
|
|
|
polyMesh mesh
|
|
(
|
|
IOobject
|
|
(
|
|
polyMesh::defaultRegion,
|
|
runTime.constant(),
|
|
runTime
|
|
),
|
|
xferMove(points),
|
|
cells,
|
|
boundaryFaces,
|
|
boundaryPatchNames,
|
|
boundaryPatchTypes,
|
|
defaultFacesName,
|
|
defaultFacesType,
|
|
boundaryPatchPhysicalTypes
|
|
);
|
|
|
|
repatchPolyTopoChanger repatcher(mesh);
|
|
|
|
// Now use the patchFaces to patch up the outside faces of the mesh.
|
|
|
|
// Get the patch for all the outside faces (= default patch added as last)
|
|
const polyPatch& pp = mesh.boundaryMesh()[mesh.boundaryMesh().size()-1];
|
|
|
|
// Storage for faceZones.
|
|
List<DynamicList<label> > zoneFaces(patchFaces.size());
|
|
|
|
|
|
// Go through all the patchFaces and find corresponding face in pp.
|
|
forAll(patchFaces, patchI)
|
|
{
|
|
const DynamicList<face>& pFaces = patchFaces[patchI];
|
|
|
|
Info<< "Finding faces of patch " << patchI << endl;
|
|
|
|
forAll(pFaces, i)
|
|
{
|
|
const face& f = pFaces[i];
|
|
|
|
// Find face in pp using all vertices of f.
|
|
label patchFaceI = findFace(pp, f);
|
|
|
|
if (patchFaceI != -1)
|
|
{
|
|
label meshFaceI = pp.start() + patchFaceI;
|
|
|
|
repatcher.changePatchID(meshFaceI, patchI);
|
|
}
|
|
else
|
|
{
|
|
// Maybe internal face? If so add to faceZone with same index
|
|
// - might be useful.
|
|
label meshFaceI = findInternalFace(mesh, f);
|
|
|
|
if (meshFaceI != -1)
|
|
{
|
|
zoneFaces[patchI].append(meshFaceI);
|
|
}
|
|
else
|
|
{
|
|
WarningIn(args.executable())
|
|
<< "Could not match gmsh face " << f
|
|
<< " to any of the interior or exterior faces"
|
|
<< " that share the same 0th point" << endl;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
Info<< nl;
|
|
|
|
// Face zones
|
|
label nValidFaceZones = 0;
|
|
|
|
Info<< "FaceZones:" << nl
|
|
<< "Zone\tSize" << endl;
|
|
|
|
forAll(zoneFaces, zoneI)
|
|
{
|
|
zoneFaces[zoneI].shrink();
|
|
|
|
const labelList& zFaces = zoneFaces[zoneI];
|
|
|
|
if (zFaces.size())
|
|
{
|
|
nValidFaceZones++;
|
|
|
|
Info<< " " << zoneI << '\t' << zFaces.size() << endl;
|
|
}
|
|
}
|
|
Info<< endl;
|
|
|
|
|
|
//Get polyMesh to write to constant
|
|
runTime.setTime(instant(runTime.constant()), 0);
|
|
|
|
repatcher.repatch();
|
|
|
|
List<cellZone*> cz;
|
|
List<faceZone*> fz;
|
|
|
|
// Construct and add the zones. Note that cell ordering does not change
|
|
// because of repatch() and neither does internal faces so we can
|
|
// use the zoneCells/zoneFaces as is.
|
|
|
|
if (nValidCellZones > 0)
|
|
{
|
|
cz.setSize(nValidCellZones);
|
|
|
|
nValidCellZones = 0;
|
|
|
|
forAll(zoneCells, zoneI)
|
|
{
|
|
if (zoneCells[zoneI].size())
|
|
{
|
|
label physReg = zoneToPhys[zoneI];
|
|
|
|
Map<word>::const_iterator iter = physicalNames.find(physReg);
|
|
|
|
word zoneName = "cellZone_" + name(zoneI);
|
|
if (iter != physicalNames.end())
|
|
{
|
|
zoneName = iter();
|
|
}
|
|
|
|
Info<< "Writing zone " << zoneI << " to cellZone "
|
|
<< zoneName << " and cellSet"
|
|
<< endl;
|
|
|
|
cellSet cset(mesh, zoneName, labelHashSet(zoneCells[zoneI]));
|
|
cset.write();
|
|
|
|
cz[nValidCellZones] = new cellZone
|
|
(
|
|
zoneName,
|
|
zoneCells[zoneI],
|
|
nValidCellZones,
|
|
mesh.cellZones()
|
|
);
|
|
nValidCellZones++;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (nValidFaceZones > 0)
|
|
{
|
|
fz.setSize(nValidFaceZones);
|
|
|
|
nValidFaceZones = 0;
|
|
|
|
forAll(zoneFaces, zoneI)
|
|
{
|
|
if (zoneFaces[zoneI].size())
|
|
{
|
|
label physReg = zoneToPhys[zoneI];
|
|
|
|
Map<word>::const_iterator iter = physicalNames.find(physReg);
|
|
|
|
word zoneName = "faceZone_" + name(zoneI);
|
|
if (iter != physicalNames.end())
|
|
{
|
|
zoneName = iter();
|
|
}
|
|
|
|
Info<< "Writing zone " << zoneI << " to faceZone "
|
|
<< zoneName << " and faceSet"
|
|
<< endl;
|
|
|
|
faceSet fset(mesh, zoneName, labelHashSet(zoneFaces[zoneI]));
|
|
fset.write();
|
|
|
|
fz[nValidFaceZones] = new faceZone
|
|
(
|
|
zoneName,
|
|
zoneFaces[zoneI],
|
|
boolList(zoneFaces[zoneI].size(), true),
|
|
nValidFaceZones,
|
|
mesh.faceZones()
|
|
);
|
|
nValidFaceZones++;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (cz.size() || fz.size())
|
|
{
|
|
mesh.addZones(List<pointZone*>(0), fz, cz);
|
|
}
|
|
|
|
removeEmptyPatches(mesh);
|
|
|
|
mesh.write();
|
|
|
|
Info<< "End\n" << endl;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
// ************************************************************************* //
|
|
|