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========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / A nd | Copyright (C) 2011-2018 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 "NASedgeFormat.H"
#include "IFstream.H"
#include "IStringStream.H"
#include "PackedBoolList.H"
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
Foam::fileFormats::NASedgeFormat::NASedgeFormat
(
const fileName& filename
)
{
read(filename);
}
// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
bool Foam::fileFormats::NASedgeFormat::read
(
const fileName& filename
)
{
clear();
IFstream is(filename);
if (!is.good())
{
FatalErrorInFunction
<< "Cannot read file " << filename
<< exit(FatalError);
}
DynamicList<point> dynPoints;
DynamicList<edge> dynEdges;
DynamicList<label> pointId; // Nastran index of points
while (is.good())
{
string line;
is.getLine(line);
// 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 == "CBEAM" || cmd == "CROD")
{
edge e;
// label groupId = readLabel(IStringStream(line.substr(16,8))());
e[0] = readLabel(IStringStream(line.substr(24,8))());
e[1] = readLabel(IStringStream(line.substr(32,8))());
// discard groupID
dynEdges.append(e);
}
else if (cmd == "PLOTEL")
{
edge e;
// label groupId = readLabel(IStringStream(line.substr(16,8))());
e[0] = readLabel(IStringStream(line.substr(16,8))());
e[1] = readLabel(IStringStream(line.substr(24,8))());
// discard groupID
dynEdges.append(e);
}
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));
}
}
// transfer to normal lists
storedPoints().transfer(dynPoints);
pointId.shrink();
dynEdges.shrink();
// Build inverse mapping (NASTRAN pointId -> index)
Map<label> mapPointId(2*pointId.size());
forAll(pointId, i)
{
mapPointId.insert(pointId[i], i);
}
// note which points were really used and which can be culled
PackedBoolList usedPoints(points().size());
// Pass1: relabel edges
// ~~~~~~~~~~~~~~~~~~~~
forAll(dynEdges, i)
{
edge& e = dynEdges[i];
e[0] = mapPointId[e[0]];
e[1] = mapPointId[e[1]];
usedPoints.set(e[0]);
usedPoints.set(e[1]);
}
pointId.clearStorage();
mapPointId.clear();
// not all the points were used, cull them accordingly
if (unsigned(points().size()) != usedPoints.count())
{
label nUsed = 0;
pointField& pts = storedPoints();
forAll(pts, pointi)
{
if (usedPoints.get(pointi))
{
if (nUsed != pointi)
{
pts[nUsed] = pts[pointi];
}
// map prev -> new id
mapPointId[pointi] = nUsed;
++nUsed;
}
}
pts.setSize(nUsed);
// renumber edge vertices
forAll(dynEdges, edgeI)
{
edge& e = dynEdges[edgeI];
e[0] = mapPointId[e[0]];
e[1] = mapPointId[e[1]];
}
}
// transfer to normal lists
storedEdges().transfer(dynEdges);
return true;
}
// ************************************************************************* //
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