271 lines
9.2 KiB
C++
271 lines
9.2 KiB
C++
/*****************************************************************************
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*
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* This file is part of Mapnik (c++ mapping toolkit)
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*
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* Copyright (C) 2015 Artem Pavlenko
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*****************************************************************************/
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#include <mapnik/config.hpp>
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// boost
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#include "boost_std_shared_shim.hpp"
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wunused-parameter"
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#pragma GCC diagnostic ignored "-Wunused-local-typedef"
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#pragma GCC diagnostic ignored "-Wmissing-field-initializers"
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#include <boost/python.hpp>
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#include <boost/python/def.hpp>
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#include <boost/python/exception_translator.hpp>
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#include <boost/python/manage_new_object.hpp>
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#include <boost/python/iterator.hpp>
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#include <boost/noncopyable.hpp>
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#include <boost/version.hpp>
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#pragma GCC diagnostic pop
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// mapnik
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#include <mapnik/geometry_impl.hpp>
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#include <mapnik/geometry_type.hpp>
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#include <mapnik/geometry_envelope.hpp>
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#include <mapnik/geometry_is_valid.hpp>
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#include <mapnik/geometry_is_simple.hpp>
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#include <mapnik/geometry_correct.hpp>
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#include <mapnik/geometry_centroid.hpp>
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#include <mapnik/wkt/wkt_factory.hpp> // from_wkt/to_wkt
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#include <mapnik/json/geometry_parser.hpp> // from_geojson
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#include <mapnik/util/geometry_to_geojson.hpp> // to_geojson
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#include <mapnik/util/geometry_to_wkb.hpp> // to_wkb
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//#include <mapnik/util/geometry_to_svg.hpp>
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#include <mapnik/wkb.hpp>
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// stl
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#include <stdexcept>
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namespace {
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std::shared_ptr<mapnik::new_geometry::geometry> from_wkb_impl(std::string const& wkb)
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{
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std::shared_ptr<mapnik::new_geometry::geometry> geom = std::make_shared<mapnik::new_geometry::geometry>();
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try
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{
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*geom = std::move(mapnik::geometry_utils::from_wkb(wkb.c_str(), wkb.size()));
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}
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catch (...)
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{
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throw std::runtime_error("Failed to parse WKB");
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}
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return geom;
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}
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std::shared_ptr<mapnik::new_geometry::geometry> from_wkt_impl(std::string const& wkt)
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{
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std::shared_ptr<mapnik::new_geometry::geometry> geom = std::make_shared<mapnik::new_geometry::geometry>();
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if (!mapnik::from_wkt(wkt, *geom))
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throw std::runtime_error("Failed to parse WKT geometry");
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return geom;
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}
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std::shared_ptr<mapnik::new_geometry::geometry> from_geojson_impl(std::string const& json)
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{
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std::shared_ptr<mapnik::new_geometry::geometry> geom = std::make_shared<mapnik::new_geometry::geometry>();
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if (!mapnik::json::from_geojson(json, *geom))
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throw std::runtime_error("Failed to parse geojson geometry");
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return geom;
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}
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}
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inline std::string boost_version()
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{
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std::ostringstream s;
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s << BOOST_VERSION/100000 << "." << BOOST_VERSION/100 % 1000 << "." << BOOST_VERSION % 100;
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return s.str();
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}
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PyObject* to_wkb_impl(mapnik::new_geometry::geometry const& geom, mapnik::wkbByteOrder byte_order)
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{
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mapnik::util::wkb_buffer_ptr wkb = mapnik::util::to_wkb(geom,byte_order);
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if (wkb)
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{
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return
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#if PY_VERSION_HEX >= 0x03000000
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::PyBytes_FromStringAndSize
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#else
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::PyString_FromStringAndSize
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#endif
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((const char*)wkb->buffer(),wkb->size());
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}
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else
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{
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Py_RETURN_NONE;
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}
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}
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std::string to_geojson_impl(mapnik::new_geometry::geometry const& geom)
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{
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std::string wkt;
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if (!mapnik::util::to_geojson(wkt, geom))
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{
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throw std::runtime_error("Generate JSON failed");
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}
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return wkt;
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}
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std::string to_wkt_impl(mapnik::new_geometry::geometry const& geom)
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{
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std::string wkt;
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if (!mapnik::to_wkt(wkt,geom))
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{
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throw std::runtime_error("Generate WKT failed");
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}
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return wkt;
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}
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mapnik::new_geometry::geometry_types geometry_type_impl(mapnik::new_geometry::geometry const& geom)
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{
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return mapnik::new_geometry::geometry_type(geom);
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}
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mapnik::box2d<double> geometry_envelope_impl(mapnik::new_geometry::geometry const& geom)
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{
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return mapnik::new_geometry::envelope(geom);
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}
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bool geometry_is_valid_impl(mapnik::new_geometry::geometry const& geom)
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{
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return mapnik::new_geometry::is_valid(geom);
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}
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bool geometry_is_simple_impl(mapnik::new_geometry::geometry const& geom)
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{
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return mapnik::new_geometry::is_simple(geom);
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}
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void geometry_correct_impl(mapnik::new_geometry::geometry & geom)
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{
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mapnik::new_geometry::correct(geom);
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}
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void polygon_set_exterior_impl(mapnik::new_geometry::polygon & poly, mapnik::new_geometry::linear_ring const& ring)
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{
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poly.exterior_ring = ring; // copy
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}
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void polygon_add_hole_impl(mapnik::new_geometry::polygon & poly, mapnik::new_geometry::linear_ring const& ring)
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{
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poly.interior_rings.push_back(ring); // copy
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}
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mapnik::new_geometry::point geometry_centroid_impl(mapnik::new_geometry::geometry const& geom)
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{
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mapnik::new_geometry::point pt;
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mapnik::new_geometry::centroid(geom, pt);
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return pt;
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}
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void export_geometry()
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{
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using namespace boost::python;
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implicitly_convertible<mapnik::new_geometry::point, mapnik::new_geometry::geometry>();
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implicitly_convertible<mapnik::new_geometry::line_string, mapnik::new_geometry::geometry>();
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implicitly_convertible<mapnik::new_geometry::polygon, mapnik::new_geometry::geometry>();
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enum_<mapnik::new_geometry::geometry_types>("GeometryType")
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.value("Unknown",mapnik::new_geometry::geometry_types::Unknown)
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.value("Point",mapnik::new_geometry::geometry_types::Point)
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.value("LineString",mapnik::new_geometry::geometry_types::LineString)
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.value("Polygon",mapnik::new_geometry::geometry_types::Polygon)
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.value("MultiPoint",mapnik::new_geometry::geometry_types::MultiPoint)
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.value("MultiLineString",mapnik::new_geometry::geometry_types::MultiLineString)
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.value("MultiPolygon",mapnik::new_geometry::geometry_types::MultiPolygon)
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.value("GeometryCollection",mapnik::new_geometry::geometry_types::GeometryCollection)
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;
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enum_<mapnik::wkbByteOrder>("wkbByteOrder")
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.value("XDR",mapnik::wkbXDR)
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.value("NDR",mapnik::wkbNDR)
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;
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using mapnik::new_geometry::geometry;
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using mapnik::new_geometry::point;
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using mapnik::new_geometry::line_string;
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using mapnik::new_geometry::linear_ring;
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using mapnik::new_geometry::polygon;
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class_<point>("Point", init<double, double>((arg("x"), arg("y")),
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"Constructs a new Point object\n"))
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.add_property("x", &point::x, "X coordinate")
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.add_property("y", &point::y, "Y coordinate")
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.def("is_valid", &geometry_is_valid_impl)
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.def("is_simple", &geometry_is_simple_impl)
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.def("to_geojson",&to_geojson_impl)
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.def("to_wkb",&to_wkb_impl)
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.def("to_wkt",&to_wkt_impl)
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;
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class_<line_string>("LineString", init<>(
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"Constructs a new LineString object\n"))
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.def("add_coord", &line_string::add_coord, "Adds coord")
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.def("is_valid", &geometry_is_valid_impl)
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.def("is_simple", &geometry_is_simple_impl)
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.def("to_geojson",&to_geojson_impl)
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.def("to_wkb",&to_wkb_impl)
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.def("to_wkt",&to_wkt_impl)
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;
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class_<linear_ring>("LinearRing", init<>(
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"Constructs a new LinearRtring object\n"))
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.def("add_coord", &linear_ring::add_coord, "Adds coord")
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;
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class_<polygon>("Polygon", init<>(
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"Constructs a new Polygon object\n"))
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.add_property("exterior_ring", &polygon::exterior_ring , "Exterior ring")
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.def("add_hole", &polygon_add_hole_impl, "Add interior ring")
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.def("num_rings", polygon_set_exterior_impl, "Number of rings (at least 1)")
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.def("is_valid", &geometry_is_valid_impl)
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.def("is_simple", &geometry_is_simple_impl)
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.def("to_geojson",&to_geojson_impl)
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.def("to_wkb",&to_wkb_impl)
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.def("to_wkt",&to_wkt_impl)
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;
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class_<geometry, std::shared_ptr<geometry>, boost::noncopyable>("Geometry",no_init)
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.def("envelope",&geometry_envelope_impl)
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.def("from_geojson", from_geojson_impl)
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.def("from_wkt", from_wkt_impl)
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.def("from_wkb", from_wkb_impl)
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.staticmethod("from_geojson")
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.staticmethod("from_wkt")
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.staticmethod("from_wkb")
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.def("__str__",&to_wkt_impl)
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.def("type",&geometry_type_impl)
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.def("is_valid", &geometry_is_valid_impl)
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.def("is_simple", &geometry_is_simple_impl)
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.def("correct", &geometry_correct_impl)
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.def("centroid",&geometry_centroid_impl)
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.def("to_wkb",&to_wkb_impl)
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.def("to_wkt",&to_wkt_impl)
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.def("to_geojson",&to_geojson_impl)
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//.def("to_svg",&to_svg)
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// TODO add other geometry_type methods
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;
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}
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