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// This file is part of ff3d - http://www.freefem.org/ff3d
// Copyright (C) 2006 Stphane Del Pino
// This program 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 2, or (at your option)
// any later version.
// This program 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 this program; if not, write to the Free Software Foundation,
// Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
// $Id: ScalarFunctionReaderMedit.cpp,v 1.3 2007/06/10 15:03:07 delpinux Exp $
#include <ScalarFunctionReaderMedit.hpp>
#include <ScalarFunctionBase.hpp>
#include <ErrorHandler.hpp>
#include <Mesh.hpp>
#include <DiscretizationType.hpp>
#include <Vector.hpp>
#include <FEMFunctionBase.hpp>
#include <FEMFunctionBuilder.hpp>
#include <fstream>
ConstReferenceCounting<ScalarFunctionBase>
ScalarFunctionReaderMedit::
getFunction() const
{
std::ifstream fin(__filename.c_str());
if (not(fin)) {
throw ErrorHandler(__FILE__,__LINE__,
"error: cannot open file '"+__filename+"'",
ErrorHandler::normal);
}
size_t a, numberOfComponents, c, numberOfVertices;
fin >> a >> numberOfComponents >> numberOfVertices >> c;
if (__componentNumber>=numberOfComponents) {
throw ErrorHandler(__FILE__,__LINE__,
"The file '"+__filename+"' does only contain "
+stringify(__componentNumber)+" components.\n"
+"Cannot read component number "+stringify(__componentNumber),
ErrorHandler::normal);
}
const Mesh& mesh = (*__mesh);
if ((a!=3)or(c!=2)) {
throw ErrorHandler(__FILE__,__LINE__,
"Unknown file descriptor while reading file '"+__filename+"'",
ErrorHandler::normal);
}
if (numberOfVertices != mesh.numberOfVertices()) {
throw ErrorHandler(__FILE__,__LINE__,
"Number of vertices does not match mesh while reading '"
+__filename+"'",
ErrorHandler::normal);
}
Vector<real_t> v(numberOfVertices);
Vector<real_t> componentValue(numberOfComponents);
for (size_t i=0; i<numberOfVertices; ++i) {
for (size_t j=0; j<numberOfComponents; ++j) {
fin >> componentValue[j];
}
v[i] = componentValue[__componentNumber];
}
if (fin.bad()) {
throw ErrorHandler(__FILE__,__LINE__,
"cannot read all datas in file '"+__filename+"'",
ErrorHandler::normal);
}
FEMFunctionBuilder builder;
DiscretizationType d(DiscretizationType::lagrangianFEM1);
builder.build(d, __mesh, v);
return builder.getBuiltScalarFunction();
}
ScalarFunctionReaderMedit::
ScalarFunctionReaderMedit(const std::string& filename,
ConstReferenceCounting<Mesh> mesh,
const std::string& functionName,
const int& componentNumber)
: ScalarFunctionReaderBase(filename, mesh, functionName, componentNumber)
{
;
}
ScalarFunctionReaderMedit::
ScalarFunctionReaderMedit(const ScalarFunctionReaderMedit& f)
: ScalarFunctionReaderBase(f)
{
;
}
ScalarFunctionReaderMedit::
~ScalarFunctionReaderMedit()
{
;
}
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