115 lines
3.7 KiB
C++
115 lines
3.7 KiB
C++
/*****************************************************************************
|
|
*
|
|
* This file is part of Mapnik (c++ mapping toolkit)
|
|
*
|
|
* Copyright (C) 2024 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 GEOBUF_DATASOURCE_HPP
|
|
#define GEOBUF_DATASOURCE_HPP
|
|
|
|
// mapnik
|
|
#include <mapnik/datasource.hpp>
|
|
#include <mapnik/params.hpp>
|
|
#include <mapnik/query.hpp>
|
|
#include <mapnik/feature.hpp>
|
|
#include <mapnik/geometry/box2d.hpp>
|
|
#include <mapnik/coord.hpp>
|
|
#include <mapnik/feature_layer_desc.hpp>
|
|
#include <mapnik/unicode.hpp>
|
|
#include <mapnik/datasource_plugin.hpp>
|
|
// boost
|
|
#include <mapnik/warning.hpp>
|
|
MAPNIK_DISABLE_WARNING_PUSH
|
|
#include <mapnik/warning_ignore.hpp>
|
|
#include <boost/version.hpp>
|
|
#include <boost/geometry/strategies/cartesian/disjoint_box_box.hpp>
|
|
#include <boost/geometry/index/rtree.hpp>
|
|
MAPNIK_DISABLE_WARNING_POP
|
|
|
|
// stl
|
|
#include <memory>
|
|
#include <vector>
|
|
#include <string>
|
|
#include <map>
|
|
#include <deque>
|
|
|
|
using mapnik::datasource;
|
|
|
|
template<std::size_t Max, std::size_t Min>
|
|
struct geobuf_linear : boost::geometry::index::linear<Max, Min>
|
|
{};
|
|
|
|
namespace boost {
|
|
namespace geometry {
|
|
namespace index {
|
|
namespace detail {
|
|
namespace rtree {
|
|
|
|
template<std::size_t Max, std::size_t Min>
|
|
struct options_type<geobuf_linear<Max, Min>>
|
|
{
|
|
using type = options<geobuf_linear<Max, Min>,
|
|
insert_default_tag,
|
|
choose_by_content_diff_tag,
|
|
split_default_tag,
|
|
linear_tag,
|
|
#if BOOST_VERSION >= 105700
|
|
node_variant_static_tag>;
|
|
#else
|
|
node_s_mem_static_tag>;
|
|
|
|
#endif
|
|
};
|
|
|
|
} // namespace rtree
|
|
} // namespace detail
|
|
} // namespace index
|
|
} // namespace geometry
|
|
} // namespace boost
|
|
|
|
DATASOURCE_PLUGIN_DEF(geobuf_datasource_plugin, geobuf);
|
|
class geobuf_datasource : public mapnik::datasource
|
|
{
|
|
public:
|
|
using box_type = mapnik::box2d<double>;
|
|
using item_type = std::pair<box_type, std::pair<std::size_t, std::size_t>>;
|
|
using spatial_index_type = boost::geometry::index::rtree<item_type, geobuf_linear<16, 4>>;
|
|
|
|
// constructor
|
|
geobuf_datasource(mapnik::parameters const& params);
|
|
virtual ~geobuf_datasource();
|
|
mapnik::datasource::datasource_t type() const override;
|
|
static const char* name();
|
|
mapnik::featureset_ptr features(mapnik::query const& q) const override;
|
|
mapnik::featureset_ptr features_at_point(mapnik::coord2d const& pt, double tol = 0) const override;
|
|
mapnik::box2d<double> envelope() const override;
|
|
mapnik::layer_descriptor get_descriptor() const override;
|
|
std::optional<mapnik::datasource_geometry_t> get_geometry_type() const override;
|
|
void parse_geobuf(char const* buffer, std::size_t size);
|
|
|
|
private:
|
|
mapnik::datasource::datasource_t type_;
|
|
mapnik::layer_descriptor desc_;
|
|
std::string filename_;
|
|
mapnik::box2d<double> extent_;
|
|
std::vector<mapnik::feature_ptr> features_;
|
|
std::unique_ptr<spatial_index_type> tree_;
|
|
};
|
|
|
|
#endif // GEOBUF_DATASOURCE_HPP
|