1 #ifndef OSMIUM_GEOM_OGR_HPP 2 #define OSMIUM_GEOM_OGR_HPP 3 4 /* 5 6 This file is part of Osmium (https://osmcode.org/libosmium). 7 8 Copyright 2013-2021 Jochen Topf <jochen@topf.org> and others (see README). 9 10 Boost Software License - Version 1.0 - August 17th, 2003 11 12 Permission is hereby granted, free of charge, to any person or organization 13 obtaining a copy of the software and accompanying documentation covered by 14 this license (the "Software") to use, reproduce, display, distribute, 15 execute, and transmit the Software, and to prepare derivative works of the 16 Software, and to permit third-parties to whom the Software is furnished to 17 do so, all subject to the following: 18 19 The copyright notices in the Software and this entire statement, including 20 the above license grant, this restriction and the following disclaimer, 21 must be included in all copies of the Software, in whole or in part, and 22 all derivative works of the Software, unless such copies or derivative 23 works are solely in the form of machine-executable object code generated by 24 a source language processor. 25 26 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 27 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 28 FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT 29 SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE 30 FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE, 31 ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 32 DEALINGS IN THE SOFTWARE. 33 34 */ 35 36 /** 37 * @file 38 * 39 * This file contains code for conversion of OSM geometries into OGR 40 * geometries. 41 * 42 * @attention If you include this file, you'll need to link with `libgdal`. 43 */ 44 45 #include <osmium/geom/coordinates.hpp> 46 #include <osmium/geom/factory.hpp> 47 48 #include <ogr_geometry.h> 49 50 #include <cassert> 51 #include <cstddef> 52 #include <memory> 53 #include <utility> 54 55 namespace osmium { 56 57 namespace geom { 58 59 namespace detail { 60 61 class OGRFactoryImpl { 62 63 public: 64 65 using point_type = std::unique_ptr<OGRPoint>; 66 using linestring_type = std::unique_ptr<OGRLineString>; 67 using polygon_type = std::unique_ptr<OGRPolygon>; 68 using multipolygon_type = std::unique_ptr<OGRMultiPolygon>; 69 using ring_type = std::unique_ptr<OGRLinearRing>; 70 71 private: 72 73 linestring_type m_linestring{nullptr}; 74 multipolygon_type m_multipolygon{nullptr}; 75 polygon_type m_polygon{nullptr}; 76 ring_type m_ring{nullptr}; 77 78 public: 79 OGRFactoryImpl(int)80 explicit OGRFactoryImpl(int /* srid */) { 81 } 82 83 /* Point */ 84 make_point(const osmium::geom::Coordinates & xy)85 static point_type make_point(const osmium::geom::Coordinates& xy) { 86 return point_type{new OGRPoint{xy.x, xy.y}}; 87 } 88 89 /* LineString */ 90 linestring_start()91 void linestring_start() { 92 m_linestring.reset(new OGRLineString{}); 93 } 94 linestring_add_location(const osmium::geom::Coordinates & xy)95 void linestring_add_location(const osmium::geom::Coordinates& xy) { 96 assert(!!m_linestring); 97 m_linestring->addPoint(xy.x, xy.y); 98 } 99 linestring_finish(size_t)100 linestring_type linestring_finish(size_t /* num_points */) { 101 assert(!!m_linestring); 102 return std::move(m_linestring); 103 } 104 105 /* Polygon */ 106 polygon_start()107 void polygon_start() { 108 m_ring.reset(new OGRLinearRing{}); 109 } 110 polygon_add_location(const osmium::geom::Coordinates & xy)111 void polygon_add_location(const osmium::geom::Coordinates& xy) { 112 assert(!!m_ring); 113 m_ring->addPoint(xy.x, xy.y); 114 } 115 polygon_finish(size_t)116 polygon_type polygon_finish(size_t /* num_points */) { 117 auto polygon = std::unique_ptr<OGRPolygon>{new OGRPolygon{}}; 118 polygon->addRingDirectly(m_ring.release()); 119 return polygon; 120 } 121 122 /* MultiPolygon */ 123 multipolygon_start()124 void multipolygon_start() { 125 m_multipolygon.reset(new OGRMultiPolygon{}); 126 } 127 multipolygon_polygon_start()128 void multipolygon_polygon_start() { 129 m_polygon.reset(new OGRPolygon{}); 130 } 131 multipolygon_polygon_finish()132 void multipolygon_polygon_finish() { 133 assert(!!m_multipolygon); 134 assert(!!m_polygon); 135 m_multipolygon->addGeometryDirectly(m_polygon.release()); 136 } 137 multipolygon_outer_ring_start()138 void multipolygon_outer_ring_start() { 139 m_ring.reset(new OGRLinearRing{}); 140 } 141 multipolygon_outer_ring_finish()142 void multipolygon_outer_ring_finish() { 143 assert(!!m_polygon); 144 assert(!!m_ring); 145 m_polygon->addRingDirectly(m_ring.release()); 146 } 147 multipolygon_inner_ring_start()148 void multipolygon_inner_ring_start() { 149 m_ring.reset(new OGRLinearRing{}); 150 } 151 multipolygon_inner_ring_finish()152 void multipolygon_inner_ring_finish() { 153 assert(!!m_polygon); 154 assert(!!m_ring); 155 m_polygon->addRingDirectly(m_ring.release()); 156 } 157 multipolygon_add_location(const osmium::geom::Coordinates & xy)158 void multipolygon_add_location(const osmium::geom::Coordinates& xy) { 159 assert(!!m_polygon); 160 assert(!!m_ring); 161 m_ring->addPoint(xy.x, xy.y); 162 } 163 multipolygon_finish()164 multipolygon_type multipolygon_finish() { 165 assert(!!m_multipolygon); 166 return std::move(m_multipolygon); 167 } 168 169 }; // class OGRFactoryImpl 170 171 } // namespace detail 172 173 template <typename TProjection = IdentityProjection> 174 using OGRFactory = GeometryFactory<osmium::geom::detail::OGRFactoryImpl, TProjection>; 175 176 } // namespace geom 177 178 } // namespace osmium 179 180 #endif // OSMIUM_GEOM_OGR_HPP 181