05424a5f12
>>> for f in m.query_point([ layer.name for layer in m.layers ].index('world'),51,0):
... print f
...
feature (
f_code:FA001
fac_id:193
id:3147
na2:UK
na3:E
nam:ENGLAND
tile_id:10
)
>>>
121 lines
4.7 KiB
C++
121 lines
4.7 KiB
C++
/*****************************************************************************
|
|
*
|
|
* This file is part of Mapnik (c++ mapping toolkit)
|
|
*
|
|
* Copyright (C) 2006 Artem Pavlenko, Jean-Francois Doyon
|
|
*
|
|
* 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: mapnik_map.cc 17 2005-03-08 23:58:43Z pavlenko $
|
|
|
|
|
|
#include <boost/python.hpp>
|
|
#include <boost/python/detail/api_placeholder.hpp>
|
|
#include <boost/python/suite/indexing/vector_indexing_suite.hpp>
|
|
|
|
#include <mapnik/layer.hpp>
|
|
#include <mapnik/map.hpp>
|
|
|
|
using mapnik::Color;
|
|
using mapnik::coord;
|
|
using mapnik::Envelope;
|
|
using mapnik::Layer;
|
|
using mapnik::Map;
|
|
|
|
struct map_pickle_suite : boost::python::pickle_suite
|
|
{
|
|
static boost::python::tuple
|
|
getinitargs(const Map& m)
|
|
{
|
|
return boost::python::make_tuple(m.getWidth(),m.getHeight(),m.srs());
|
|
}
|
|
|
|
static boost::python::tuple
|
|
getstate(const Map& m)
|
|
{
|
|
boost::python::list l;
|
|
for (unsigned i=0;i<m.layerCount();++i)
|
|
{
|
|
l.append(m.getLayer(i));
|
|
}
|
|
return boost::python::make_tuple(m.getCurrentExtent(),m.getBackground(),l);
|
|
}
|
|
|
|
static void
|
|
setstate (Map& m, boost::python::tuple state)
|
|
{
|
|
using namespace boost::python;
|
|
if (len(state) != 3)
|
|
{
|
|
PyErr_SetObject(PyExc_ValueError,
|
|
("expected 3-item tuple in call to __setstate__; got %s"
|
|
% state).ptr()
|
|
);
|
|
throw_error_already_set();
|
|
}
|
|
Envelope<double> ext = extract<Envelope<double> >(state[0]);
|
|
Color bg = extract<Color>(state[1]);
|
|
m.zoomToBox(ext);
|
|
m.setBackground(bg);
|
|
boost::python::list l=extract<boost::python::list>(state[2]);
|
|
for (int i=0;i<len(l);++i)
|
|
{
|
|
m.addLayer(extract<Layer>(l[i]));
|
|
}
|
|
}
|
|
};
|
|
|
|
std::vector<Layer>& (Map::*layers_nonconst)() = &Map::layers;
|
|
std::vector<Layer> const& (Map::*layers_const)() const = &Map::layers;
|
|
|
|
void export_map()
|
|
{
|
|
using namespace boost::python;
|
|
class_<std::vector<Layer> >("Layers")
|
|
.def(vector_indexing_suite<std::vector<Layer> >())
|
|
;
|
|
|
|
class_<Map>("Map","The map object.",init<int,int,optional<std::string const&> >())
|
|
.add_property("width",&Map::getWidth, &Map::setWidth, "The width of the map.")
|
|
.add_property("height",&Map::getHeight, &Map::setHeight, "The height of the map.")
|
|
.add_property("srs",make_function(&Map::srs,return_value_policy<copy_const_reference>()),
|
|
&Map::set_srs,"Spatial reference in proj4 format e.g. \"+proj=latlong +datum=WGS84\"")
|
|
.add_property("background",make_function
|
|
(&Map::getBackground,return_value_policy<copy_const_reference>()),
|
|
&Map::setBackground, "The background color of the map.")
|
|
.def("envelope",make_function(&Map::getCurrentExtent,
|
|
return_value_policy<copy_const_reference>()),
|
|
"The current extent of the map")
|
|
.def("scale", &Map::scale)
|
|
.def("zoom_all",&Map::zoom_all,
|
|
"Set the geographical extent of the map "
|
|
"to the combined extents of all active layers")
|
|
.def("zoom_to_box",&Map::zoomToBox, "Set the geographical extent of the map.")
|
|
.def("pan",&Map::pan)
|
|
.def("zoom",&Map::zoom)
|
|
.def("zoom_all",&Map::zoom_all)
|
|
.def("pan_and_zoom",&Map::pan_and_zoom)
|
|
.def("append_style",&Map::insert_style)
|
|
.def("remove_style",&Map::remove_style)
|
|
.def("query_point",&Map::query_point)
|
|
.def("query_map_point",&Map::query_map_point)
|
|
.add_property("layers",make_function
|
|
(layers_nonconst,return_value_policy<reference_existing_object>()),
|
|
"Get the list of layers in this map.")
|
|
.def("find_style",&Map::find_style,return_value_policy<copy_const_reference>())
|
|
.def_pickle(map_pickle_suite())
|
|
;
|
|
}
|