Libosmium 2.22.0 Fast and flexible C++ library for working with OpenStreetMap data

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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 2013-2025 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>
38#include <osmium/handler/check_order.hpp>
39#include <osmium/memory/buffer.hpp>
40#include <osmium/memory/callback_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>
45#include <osmium/relations/manager_util.hpp>
46#include <osmium/relations/members_database.hpp>
47#include <osmium/relations/relations_database.hpp>
48#include <osmium/relations/relations_manager.hpp>
49#include <osmium/storage/item_stash.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;
81 assembler_config_type m_assembler_config;
82
83 area_stats m_stats;
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
109 bool new_relation(const osmium::Relation& relation) const {
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
131 void complete_relation(const osmium::Relation& relation) {
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
154 void way_not_in_any_relation(const osmium::Way& way) {
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
buffer.hpp
callback_buffer.hpp
check_order.hpp
osmium::RelationMember
Definition relation.hpp:56
osmium::Relation
Definition relation.hpp:161
osmium::Way
Definition way.hpp:72
osmium::area::MultipolygonManagerLegacy
Definition multipolygon_manager_legacy.hpp:78
osmium::area::MultipolygonManagerLegacy::stats
const area_stats & stats() const noexcept
Definition multipolygon_manager_legacy.hpp:101
osmium::area::MultipolygonManagerLegacy::way_not_in_any_relation
void way_not_in_any_relation(const osmium::Way &way)
Definition multipolygon_manager_legacy.hpp:154
osmium::area::MultipolygonManagerLegacy::MultipolygonManagerLegacy
MultipolygonManagerLegacy(const assembler_config_type &assembler_config)
Definition multipolygon_manager_legacy.hpp:93
osmium::area::MultipolygonManagerLegacy::assembler_config_type
typename TAssembler::config_type assembler_config_type
Definition multipolygon_manager_legacy.hpp:80
osmium::area::MultipolygonManagerLegacy::complete_relation
void complete_relation(const osmium::Relation &relation)
Definition multipolygon_manager_legacy.hpp:131
osmium::area::MultipolygonManagerLegacy::m_stats
area_stats m_stats
Definition multipolygon_manager_legacy.hpp:83
osmium::area::MultipolygonManagerLegacy::new_relation
bool new_relation(const osmium::Relation &relation) const
Definition multipolygon_manager_legacy.hpp:109
osmium::area::MultipolygonManagerLegacy::m_assembler_config
assembler_config_type m_assembler_config
Definition multipolygon_manager_legacy.hpp:81
osmium::relations::RelationsManagerBase::buffer
osmium::memory::Buffer & buffer() noexcept
Access the output buffer.
Definition relations_manager.hpp:259
osmium::relations::RelationsManagerBase::get_member_way
const osmium::Way * get_member_way(osmium::object_id_type id) const noexcept
Definition relations_manager.hpp:213
osmium::relations::RelationsManager
Definition relations_manager.hpp:305
handler.hpp
item_stash.hpp
item_type.hpp
manager_util.hpp
members_database.hpp
osmium::osm_entity_bits::area
@ area
Definition entity_bits.hpp:75
osmium
Namespace for everything in the Osmium library.
Definition assembler.hpp:53
osmium::item_type::relation
@ relation
osmium::item_type::way
@ way
relation.hpp
relations_database.hpp
relations_manager.hpp
stats.hpp
osmium::area::area_stats
Definition stats.hpp:49
osmium::invalid_location
Definition location.hpp:53
tag.hpp
way.hpp