Libosmium  2.15.2
Fast and flexible C++ library for working with OpenStreetMap data
multipolygon_manager_legacy.hpp
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1 #ifndef OSMIUM_AREA_MULTIPOLYGON_MANAGER_LEGACY_HPP
2 #define OSMIUM_AREA_MULTIPOLYGON_MANAGER_LEGACY_HPP
3 
4 /*
5 
6 This file is part of Osmium (https://osmcode.org/libosmium).
7 
8 Copyright 2013-2019 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 #include <osmium/area/stats.hpp>
37 #include <osmium/handler.hpp>
39 #include <osmium/memory/buffer.hpp>
41 #include <osmium/osm/item_type.hpp>
42 #include <osmium/osm/relation.hpp>
43 #include <osmium/osm/tag.hpp>
44 #include <osmium/osm/way.hpp>
50 
51 #include <algorithm>
52 #include <cassert>
53 #include <cstddef>
54 #include <cstdint>
55 #include <cstring>
56 #include <vector>
57 
58 namespace osmium {
59 
63  namespace area {
64 
77  template <typename TAssembler>
78  class MultipolygonManagerLegacy : public osmium::relations::RelationsManager<MultipolygonManagerLegacy<TAssembler>, false, true, false> {
79 
80  using assembler_config_type = typename TAssembler::config_type;
82 
84 
85  public:
86 
93  explicit MultipolygonManagerLegacy(const assembler_config_type& assembler_config) :
94  m_assembler_config(assembler_config) {
95  }
96 
101  const area_stats& stats() const noexcept {
102  return m_stats;
103  }
104 
110  const char* type = relation.tags().get_value_by_key("type");
111 
112  // ignore relations without "type" tag
113  if (!type) {
114  return false;
115  }
116 
117  if ((!std::strcmp(type, "multipolygon")) || (!std::strcmp(type, "boundary"))) {
118  return std::any_of(relation.members().cbegin(), relation.members().cend(), [](const RelationMember& member) {
119  return member.type() == osmium::item_type::way;
120  });
121  }
122 
123  return false;
124  }
125 
132  std::vector<const osmium::Way*> ways;
133  ways.reserve(relation.members().size());
134  for (const auto& member : relation.members()) {
135  if (member.ref() != 0) {
136  ways.push_back(this->get_member_way(member.ref()));
137  assert(ways.back() != nullptr);
138  }
139  }
140 
141  try {
142  TAssembler assembler{m_assembler_config};
143  assembler(relation, ways, this->buffer());
144  m_stats += assembler.stats();
145  } catch (const osmium::invalid_location&) {
146  // XXX ignore
147  }
148  }
149 
155  // you need at least 4 nodes to make up a polygon
156  if (way.nodes().size() <= 3) {
157  return;
158  }
159  try {
160  if (!way.nodes().front().location() || !way.nodes().back().location()) {
161  throw osmium::invalid_location{"invalid location"};
162  }
163  if (way.ends_have_same_location()) {
164  // way is closed and has enough nodes, build simple multipolygon
165  TAssembler assembler{m_assembler_config};
166  assembler(way, this->buffer());
167  m_stats += assembler.stats();
168  }
169  } catch (const osmium::invalid_location&) {
170  // XXX ignore
171  }
172  }
173 
174  }; // class MultipolygonManagerLegacy
175 
176  } // namespace area
177 
178 } // namespace osmium
179 
180 #endif // OSMIUM_AREA_MULTIPOLYGON_MANAGER_LEGACY_HPP
const area_stats & stats() const noexcept
Definition: multipolygon_manager_legacy.hpp:101
type
Definition: entity_bits.hpp:63
void way(const osmium::Way &) const noexcept
Definition: handler.hpp:81
void complete_relation(const osmium::Relation &relation)
Definition: multipolygon_manager_legacy.hpp:131
const assembler_config_type m_assembler_config
Definition: multipolygon_manager_legacy.hpp:81
bool new_relation(const osmium::Relation &relation) const
Definition: multipolygon_manager_legacy.hpp:109
osmium::memory::Buffer & buffer() noexcept
Access the output buffer.
Definition: relations_manager.hpp:255
Definition: relation.hpp:168
MultipolygonManagerLegacy(const assembler_config_type &assembler_config)
Definition: multipolygon_manager_legacy.hpp:93
Definition: entity_bits.hpp:72
Definition: way.hpp:72
Definition: multipolygon_manager_legacy.hpp:78
Definition: relation.hpp:57
Namespace for everything in the Osmium library.
Definition: assembler.hpp:53
void relation(const osmium::Relation &relation)
Definition: relations_manager.hpp:484
Definition: location.hpp:53
Definition: stats.hpp:49
const osmium::Way * get_member_way(osmium::object_id_type id) const noexcept
Definition: relations_manager.hpp:209
Definition: relations_manager.hpp:301
area_stats m_stats
Definition: multipolygon_manager_legacy.hpp:83
typename TAssembler::config_type assembler_config_type
Definition: multipolygon_manager_legacy.hpp:80
void way_not_in_any_relation(const osmium::Way &way)
Definition: multipolygon_manager_legacy.hpp:154