96 lines
3.2 KiB
C++
96 lines
3.2 KiB
C++
|
/*****************************************************************************
|
||
|
|
*
|
||
|
|
* This file is part of Mapnik (c++ mapping toolkit)
|
||
|
|
*
|
||
|
|
* Copyright (C) 2007 Artem Pavlenko
|
||
|
|
*
|
||
|
|
* This library is free software; you can redistribute it and/or
|
||
|
|
* modify it under the terms of the GNU Lesser General Public
|
||
|
|
* License as published by the Free Software Foundation; either
|
||
|
|
* version 2.1 of the License, or (at your option) any later version.
|
||
|
|
*
|
||
|
|
* This library 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
|
||
|
|
* Lesser General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU Lesser General Public
|
||
|
|
* License along with this library; if not, write to the Free Software
|
||
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
||
|
|
*
|
||
|
|
*****************************************************************************/
|
||
|
|
//$Id$
|
||
|
|
|
||
|
|
#include <mapnik/global.hpp>
|
||
|
|
#include <mapnik/datasource.hpp>
|
||
|
|
#include <mapnik/envelope.hpp>
|
||
|
|
#include <mapnik/geometry.hpp>
|
||
|
|
#include <mapnik/feature.hpp>
|
||
|
|
#include <mapnik/feature_layer_desc.hpp>
|
||
|
|
#include <mapnik/wkb.hpp>
|
||
|
|
#include <mapnik/unicode.hpp>
|
||
|
|
|
||
|
|
#include "kismet_featureset.hpp"
|
||
|
|
|
||
|
|
using namespace std;
|
||
|
|
using namespace mapnik;
|
||
|
|
|
||
|
|
kismet_featureset::kismet_featureset(const std::list<kismet_network_data> &knd_list,
|
||
|
|
std::string const& encoding)
|
||
|
|
: knd_list_(knd_list),
|
||
|
|
tr_(new transcoder(encoding)),
|
||
|
|
feature_id (0),
|
||
|
|
knd_list_it(knd_list_.begin ()),
|
||
|
|
source_("+proj=latlong +datum=WGS84")
|
||
|
|
{
|
||
|
|
cout << "kismet_featureset::kismet_featureset()" << endl;
|
||
|
|
}
|
||
|
|
|
||
|
|
kismet_featureset::~kismet_featureset() {}
|
||
|
|
|
||
|
|
feature_ptr kismet_featureset::next()
|
||
|
|
{
|
||
|
|
cout << "kismet_featureset::next()" << endl;
|
||
|
|
|
||
|
|
cout << "create wlan feature: " << knd_list_.size () << endl;
|
||
|
|
|
||
|
|
if (knd_list_it != knd_list_.end ())
|
||
|
|
{
|
||
|
|
const kismet_network_data &knd = *knd_list_it;
|
||
|
|
|
||
|
|
feature_ptr feature(new Feature(feature_id));
|
||
|
|
string key = "internet_access";
|
||
|
|
string value = "wlan";
|
||
|
|
double outMercLongitude = 0;
|
||
|
|
double outMercLatitude = 0;
|
||
|
|
|
||
|
|
wgs84ToMercator (knd.bestlon_, knd.bestlat_, outMercLongitude, outMercLatitude);
|
||
|
|
|
||
|
|
mapnik::geometry2d * pt = new mapnik::point_impl;
|
||
|
|
pt->move_to(outMercLongitude, outMercLatitude);
|
||
|
|
feature->add_geometry(pt);
|
||
|
|
(*feature)[key] = tr_->transcode(value.c_str ());
|
||
|
|
|
||
|
|
++feature_id;
|
||
|
|
++knd_list_it;
|
||
|
|
|
||
|
|
return feature;
|
||
|
|
}
|
||
|
|
|
||
|
|
// returns empty object to mark end
|
||
|
|
return feature_ptr();
|
||
|
|
}
|
||
|
|
|
||
|
|
void kismet_featureset::wgs84ToMercator (double inWGS84Longitude, double inWGS84Latitude,
|
||
|
|
double &outMercLongitude, double &outMercLatitude)
|
||
|
|
{
|
||
|
|
projection dest ("+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgrids=@null +no_defs +over"); // initialize to your Map projection
|
||
|
|
proj_transform proj_tr (source_, dest);
|
||
|
|
|
||
|
|
double z = 0.0;
|
||
|
|
proj_tr.forward (inWGS84Longitude, inWGS84Latitude, z);
|
||
|
|
|
||
|
|
outMercLongitude = inWGS84Longitude;
|
||
|
|
outMercLatitude = inWGS84Latitude;
|
||
|
|
}
|