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Viewing changes to src/Mod/Points/App/PointsAlgos.cpp

  • Committer: Bazaar Package Importer
  • Author(s): Teemu Ikonen
  • Date: 2009-07-16 18:37:41 UTC
  • Revision ID: james.westby@ubuntu.com-20090716183741-oww9kcxqrk991i1n
Tags: upstream-0.8.2237
Import upstream version 0.8.2237

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src/Mod/Points/App/PointsAlgos.cpp
 
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/***************************************************************************
 
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 *   Copyright (c) Juergen Riegel         <juergen.riegel@web.de>          *
 
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 *                                                                         *
 
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 *   This file is part of the FreeCAD CAx development system.              *
 
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 *                                                                         *
 
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 *   This library is free software; you can redistribute it and/or         *
 
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 *   modify it under the terms of the GNU Library General Public           *
 
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 *   License as published by the Free Software Foundation; either          *
 
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 *   version 2 of the License, or (at your option) any later version.      *
 
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 *                                                                         *
 
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 *   This library  is distributed in the hope that it will be useful,      *
 
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 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 
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 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 
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 *   GNU Library General Public License for more details.                  *
 
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 *                                                                         *
 
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 *   You should have received a copy of the GNU Library General Public     *
 
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 *   License along with this library; see the file COPYING.LIB. If not,    *
 
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 *   write to the Free Software Foundation, Inc., 59 Temple Place,         *
 
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 *   Suite 330, Boston, MA  02111-1307, USA                                *
 
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 *                                                                         *
 
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 ***************************************************************************/
 
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#include "PreCompiled.h"
 
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#ifndef _PreComp_
 
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#ifdef FC_OS_LINUX
 
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# include <unistd.h>
 
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#endif
 
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# include <sstream>
 
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#endif
 
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#include "PointsAlgos.h"
 
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#include "Points.h"
 
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#include <Base/Exception.h>
 
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#include <Base/FileInfo.h>
 
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#include <Base/Console.h>
 
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#include <Base/Sequencer.h>
 
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#include <Base/Stream.h>
 
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#include <boost/regex.hpp>
 
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using namespace Points;
 
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void PointsAlgos::Load(PointKernel &points, const char *FileName)
 
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{
 
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    Base::FileInfo File(FileName);
 
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    // checking on the file
 
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    if (!File.isReadable())
 
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        throw Base::Exception("File to load not existing or not readable");
 
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    if (File.extension() == "asc" ||File.extension() == "ASC")
 
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        LoadAscii(points,FileName);
 
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    else
 
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        throw Base::Exception("Unknown ending");
 
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}
 
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void PointsAlgos::LoadAscii(PointKernel &points, const char *FileName)
 
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{
 
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    boost::regex rx("^\\s*([-+]?[0-9]*)\\.?([0-9]+([eE][-+]?[0-9]+)?)"
 
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                     "\\s+([-+]?[0-9]*)\\.?([0-9]+([eE][-+]?[0-9]+)?)"
 
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                     "\\s+([-+]?[0-9]*)\\.?([0-9]+([eE][-+]?[0-9]+)?)\\s*$");
 
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    //boost::regex rx("(\\b[0-9]+\\.([0-9]+\\b)?|\\.[0-9]+\\b)");
 
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    //boost::regex rx("^\\s*(-?[0-9]*)\\.([0-9]+)\\s+(-?[0-9]*)\\.([0-9]+)\\s+(-?[0-9]*)\\.([0-9]+)\\s*$");
 
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    boost::cmatch what;
 
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    Base::Vector3d pt;
 
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    int LineCnt=0;
 
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    std::string line;
 
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    Base::FileInfo fi(FileName);
 
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    Base::ifstream tmp_str(fi, std::ios::in);
 
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    // estimating size
 
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    while (std::getline(tmp_str,line))
 
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        LineCnt++;
 
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    // resize the PointKernel
 
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    points.resize(LineCnt);
 
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    Base::SequencerLauncher seq( "Loading points...", LineCnt );
 
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    // again to the beginning
 
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    Base::ifstream file(fi, std::ios::in);
 
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    LineCnt = 0;
 
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    try {
 
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        // read file
 
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        while (std::getline(file, line)) {
 
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            if (boost::regex_match(line.c_str(), what, rx)) {
 
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                pt.x = std::atof(what[1].first);
 
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                pt.y = std::atof(what[4].first);
 
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                pt.z = std::atof(what[7].first);
 
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                points.setPoint(LineCnt,pt);
 
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                seq.next();
 
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                LineCnt++;
 
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            }
 
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        }
 
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    }
 
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    catch (...) {
 
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        points.clear();
 
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        throw Base::Exception("Reading in points failed.");
 
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    }
 
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    // now remove the last points from the kernel
 
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    // Note: first we allocate memory corresponding to the number of lines (points and comments)
 
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    //       and read in the file twice. But then the size of the kernel is too high
 
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    if (LineCnt < (int)points.size())
 
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        points.erase(LineCnt, points.size());
 
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}