a_dxf_polyline.cxx

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/*
Copyright 2002-2011 Pierre SMARS (smars@yuntech.edu.tw)
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 of the License, 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, see <http://www.gnu.org/licenses/>.
*/
#include "a_dxf_polyline.h"
#include "a_dxf_group.h"
 
//---------------------------------------------------------------------------
a_dxf_polyline::a_dxf_polyline(std::istream *   file) : a_dxf_entity(file)
{
 
}
//---------------------------------------------------------------------------
void a_dxf_polyline::init()
{
        x_.clear();
        y_.clear();
        z_.clear();
}
//---------------------------------------------------------------------------
bool a_dxf_polyline::read()
{
        this->init();
        a_dxf_group group(file_);
        layer_ = "0";
        bool stop = false;
        do
        {
                group.read();
                if (group.code()==8)
                        layer_ = group.data();
                if ((group.code()==0)&&(group.data()=="VERTEX"))
                {
                        do
                        {
                                group.read();
                                if (group.code()==10)
                                        x_.push_back(group.data_double());
                                else if (group.code()==20)
                                        y_.push_back(group.data_double());
                                else if (group.code()==30)
                                        z_.push_back(group.data_double());
                                else if (group.data()=="SEQEND")
                                {
                                        do
                                        {
                                                group.read();
                                                if (group.code()==0)
                                                        stop = true;
                                        } while (!stop);
                                }
                        } while (!stop);
                }
        } while (!stop);
        group.putback();
        return true;
}