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/*****************************************************************************
*
* 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/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, double tol = 0) 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
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