82 lines
3 KiB
C++
82 lines
3 KiB
C++
/*****************************************************************************
|
|
*
|
|
* This file is part of Mapnik (c++ mapping toolkit)
|
|
*
|
|
* Copyright (C) 2012 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
|
|
*
|
|
*****************************************************************************/
|
|
|
|
#ifndef GEOJSON_DATASOURCE_HPP
|
|
#define GEOJSON_DATASOURCE_HPP
|
|
|
|
// mapnik
|
|
#include <mapnik/datasource.hpp>
|
|
#include <mapnik/params.hpp>
|
|
#include <mapnik/query.hpp>
|
|
#include <mapnik/feature.hpp>
|
|
#include <mapnik/box2d.hpp>
|
|
#include <mapnik/coord.hpp>
|
|
#include <mapnik/feature_layer_desc.hpp>
|
|
|
|
// boost
|
|
#include <boost/optional.hpp>
|
|
#include <boost/shared_ptr.hpp>
|
|
#include <boost/geometry/geometries/box.hpp>
|
|
#include <boost/geometry/geometries/point_xy.hpp>
|
|
#include <boost/geometry/algorithms/area.hpp>
|
|
#include <boost/geometry/extensions/index/rtree/rtree.hpp>
|
|
#include <boost/geometry/geometries/geometries.hpp>
|
|
#include <boost/geometry/extensions/index/rtree/rtree.hpp>
|
|
|
|
// stl
|
|
#include <vector>
|
|
#include <string>
|
|
#include <map>
|
|
#include <deque>
|
|
|
|
class geojson_datasource : public mapnik::datasource
|
|
{
|
|
public:
|
|
typedef boost::geometry::model::d2::point_xy<double> point_type;
|
|
typedef boost::geometry::model::box<point_type> box_type;
|
|
typedef boost::geometry::index::rtree<box_type,std::size_t> spatial_index_type;
|
|
|
|
// constructor
|
|
geojson_datasource(mapnik::parameters const& params, bool bind=true);
|
|
virtual ~geojson_datasource ();
|
|
mapnik::datasource::datasource_t type() const;
|
|
static const char * name();
|
|
mapnik::featureset_ptr features(mapnik::query const& q) const;
|
|
mapnik::featureset_ptr features_at_point(mapnik::coord2d const& pt) const;
|
|
mapnik::box2d<double> envelope() const;
|
|
mapnik::layer_descriptor get_descriptor() const;
|
|
boost::optional<mapnik::datasource::geometry_t> get_geometry_type() const;
|
|
void bind() const;
|
|
private:
|
|
mapnik::datasource::datasource_t type_;
|
|
mutable std::map<std::string, mapnik::parameters> statistics_;
|
|
mutable mapnik::layer_descriptor desc_;
|
|
mutable std::string file_;
|
|
mutable mapnik::box2d<double> extent_;
|
|
boost::shared_ptr<mapnik::transcoder> tr_;
|
|
mutable std::vector<mapnik::feature_ptr> features_;
|
|
mutable spatial_index_type tree_;
|
|
mutable std::deque<std::size_t> index_array_;
|
|
};
|
|
|
|
|
|
#endif // FILE_DATASOURCE_HPP
|