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========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / A nd | Copyright (C) 2011-2021 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/>.
\*---------------------------------------------------------------------------*/
#include "NASsurfaceFormat.H"
#include "IFstream.H"
#include "IStringStream.H"
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
template<class Face>
Foam::fileFormats::NASsurfaceFormat<Face>::NASsurfaceFormat
(
const fileName& filename
)
{
read(filename);
}
// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
template<class Face>
bool Foam::fileFormats::NASsurfaceFormat<Face>::read
(
const fileName& filename
)
{
const bool mustTriangulate = this->isTri();
this->clear();
IFstream is(filename);
if (!is.good())
{
FatalErrorInFunction
<< "Cannot read file " << filename
<< exit(FatalError);
}
// Nastran index of points
DynamicList<label> pointId;
DynamicList<point> dynPoints;
DynamicList<Face> dynFaces;
DynamicList<label> dynZones;
DynamicList<label> dynSizes;
Map<label> lookup;
// assume the types are not intermixed
// leave faces that didn't have a group in 0
bool sorted = true;
label zoneI = 0;
// Name for face group
Map<word> nameLookup;
// Ansa tags. Denoted by $ANSA_NAME.
// These will appear just before the first use of a type.
// We read them and store the PSHELL types which are used to name
// the zones.
label ansaId = -1;
word ansaType, ansaName;
// A single warning per unrecognised command
HashSet<word> unhandledCmd;
while (is.good())
{
string line;
is.getLine(line);
// Ansa extension
if (line.substr(0, 10) == "$ANSA_NAME")
{
string::size_type sem0 = line.find (';', 0);
string::size_type sem1 = line.find (';', sem0+1);
string::size_type sem2 = line.find (';', sem1+1);
if
(
sem0 != string::npos
&& sem1 != string::npos
&& sem2 != string::npos
)
{
ansaId = readLabel
(
IStringStream(line.substr(sem0+1, sem1-sem0-1))()
);
ansaType = line.substr(sem1+1, sem2-sem1-1);
string rawName;
is.getLine(rawName);
if (rawName[rawName.size()-1] == '\r')
{
rawName = rawName.substr(1, rawName.size()-2);
}
else
{
rawName = rawName.substr(1, rawName.size()-1);
}
string::stripInvalid<word>(rawName);
ansaName = rawName;
// Info<< "ANSA tag for NastranID:" << ansaId
// << " of type " << ansaType
// << " name " << ansaName << endl;
}
}
// Hypermesh extension
// $HMNAME COMP 1"partName"
if
(
line.substr(0, 12) == "$HMNAME COMP"
&& line.find ('"') != string::npos
)
{
label groupId = readLabel
(
IStringStream(line.substr(16, 16))()
);
IStringStream lineStream(line.substr(32));
string rawName;
lineStream >> rawName;
string::stripInvalid<word>(rawName);
word groupName(rawName);
nameLookup.insert(groupId, groupName);
// Info<< "group " << groupId << " => " << groupName << endl;
}
// Skip empty or comment
if (line.empty() || line[0] == '$')
{
continue;
}
// Check if character 72 is continuation
if (line.size() > 72 && line[72] == '+')
{
line = line.substr(0, 72);
while (true)
{
string buf;
is.getLine(buf);
if (buf.size() > 72 && buf[72] == '+')
{
line += buf.substr(8, 64);
}
else
{
line += buf.substr(8, buf.size()-8);
break;
}
}
}
// Read first word
IStringStream lineStream(line);
word cmd;
lineStream >> cmd;
if (cmd == "CTRIA3")
{
triFace fTri;
label groupId = readLabel(IStringStream(line.substr(16,8))());
fTri[0] = readLabel(IStringStream(line.substr(24,8))());
fTri[1] = readLabel(IStringStream(line.substr(32,8))());
fTri[2] = readLabel(IStringStream(line.substr(40,8))());
// Convert groupID into zoneId
Map<label>::const_iterator fnd = lookup.find(groupId);
if (fnd != lookup.end())
{
if (zoneI != fnd())
{
// pshell types are intermixed
sorted = false;
}
zoneI = fnd();
}
else
{
zoneI = dynSizes.size();
lookup.insert(groupId, zoneI);
dynSizes.append(0);
// Info<< "zone" << zoneI << " => group " << groupId <<endl;
}
dynFaces.append(fTri);
dynZones.append(zoneI);
dynSizes[zoneI]++;
}
else if (cmd == "CQUAD4")
{
face fQuad(4);
labelUList& f = static_cast<labelUList&>(fQuad);
label groupId = readLabel(IStringStream(line.substr(16,8))());
fQuad[0] = readLabel(IStringStream(line.substr(24,8))());
fQuad[1] = readLabel(IStringStream(line.substr(32,8))());
fQuad[2] = readLabel(IStringStream(line.substr(40,8))());
fQuad[3] = readLabel(IStringStream(line.substr(48,8))());
// Convert groupID into zoneId
Map<label>::const_iterator fnd = lookup.find(groupId);
if (fnd != lookup.end())
{
if (zoneI != fnd())
{
// pshell types are intermixed
sorted = false;
}
zoneI = fnd();
}
else
{
zoneI = dynSizes.size();
lookup.insert(groupId, zoneI);
dynSizes.append(0);
// Info<< "zone" << zoneI << " => group " << groupId <<endl;
}
if (mustTriangulate)
{
dynFaces.append(triFace(f[0], f[1], f[2]));
dynFaces.append(triFace(f[0], f[2], f[3]));
dynZones.append(zoneI);
dynZones.append(zoneI);
dynSizes[zoneI] += 2;
}
else
{
dynFaces.append(Face(f));
dynZones.append(zoneI);
dynSizes[zoneI]++;
}
}
else if (cmd == "GRID")
{
label index = readLabel(IStringStream(line.substr(8,8))());
scalar x = parseNASCoord(line.substr(24, 8));
scalar y = parseNASCoord(line.substr(32, 8));
scalar z = parseNASCoord(line.substr(40, 8));
pointId.append(index);
dynPoints.append(point(x, y, z));
}
else if (cmd == "GRID*")
{
// Long format is on two lines with '*' continuation symbol
// on start of second line.
// Typical line (spaces compacted)
// GRID* 126 0 -5.55999875E+02 -5.68730474E+02
// * 2.14897901E+02
label index = readLabel(IStringStream(line.substr(8,16))());
scalar x = parseNASCoord(line.substr(40, 16));
scalar y = parseNASCoord(line.substr(56, 16));
is.getLine(line);
if (line[0] != '*')
{
FatalErrorInFunction
<< "Expected continuation symbol '*' when reading GRID*"
<< " (double precision coordinate) format" << nl
<< "Read:" << line << nl
<< "File:" << is.name() << " line:" << is.lineNumber()
<< exit(FatalError);
}
scalar z = parseNASCoord(line.substr(8, 16));
pointId.append(index);
dynPoints.append(point(x, y, z));
}
else if (cmd == "PSHELL")
{
// pshell type for zone names with the Ansa extension
label groupId = readLabel(IStringStream(line.substr(8,8))());
if (groupId == ansaId && ansaType == "PSHELL")
{
nameLookup.insert(ansaId, ansaName);
// Info<< "group " << groupId << " => " << ansaName << endl;
}
}
else if (unhandledCmd.insert(cmd))
{
Info<< "Unhandled Nastran command " << line << nl
<< "File:" << is.name() << " line:" << is.lineNumber()
<< endl;
}
}
// Info<< "Read faces:" << dynFaces.size()
// << " points:" << dynPoints.size()
// << endl;
// transfer to normal lists
this->storedPoints().transfer(dynPoints);
pointId.shrink();
dynFaces.shrink();
// Build inverse mapping (NASTRAN pointId -> index)
Map<label> mapPointId(2*pointId.size());
forAll(pointId, i)
{
mapPointId.insert(pointId[i], i);
}
// Relabel faces
// ~~~~~~~~~~~~~
forAll(dynFaces, i)
{
Face& f = dynFaces[i];
forAll(f, fp)
{
f[fp] = mapPointId[f[fp]];
}
}
pointId.clearStorage();
mapPointId.clear();
// create default zone names, or from ANSA/Hypermesh information
List<word> names(dynSizes.size());
forAllConstIter(Map<label>, lookup, iter)
{
const label zoneI = iter();
const label groupI = iter.key();
Map<word>::const_iterator fnd = nameLookup.find(groupI);
if (fnd != nameLookup.end())
{
names[zoneI] = fnd();
}
else
{
names[zoneI] = word("zone") + ::Foam::name(zoneI);
}
}
this->sortFacesAndStore(move(dynFaces), move(dynZones), sorted);
// add zones, culling empty ones
this->addZones(dynSizes, names, true);
return true;
}
// ************************************************************************* //
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