/usr/include/osmium/osm/area.hpp is in libosmium-dev 0.0~20140910-9a069af-1+b1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 | #ifndef OSMIUM_OSM_AREA_HPP
#define OSMIUM_OSM_AREA_HPP
/*
Copyright 2012 Jochen Topf <jochen@topf.org> and others (see README).
This file is part of Osmium (https://github.com/joto/osmium).
Osmium is free software: you can redistribute it and/or modify it under the
terms of the GNU Lesser General Public License or (at your option) the GNU
General Public License as published by the Free Software Foundation, either
version 3 of the Licenses, or (at your option) any later version.
Osmium 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 and the GNU
General Public License for more details.
You should have received a copy of the Licenses along with Osmium. If not, see
<http://www.gnu.org/licenses/>.
*/
#include <boost/operators.hpp>
#include <geos/geom/MultiPolygon.h>
#include <osmium/osm/object.hpp>
#include <osmium/osm/way.hpp>
#include <osmium/osm/relation.hpp>
namespace Osmium {
namespace Geometry {
class MultiPolygon;
}
namespace {
template <typename T>
int sgn(T val) {
return (T(0) < val) - (val < T(0));
}
}
namespace OSM {
/**
* Area objects are pseudo OSM objects created from Ways or
* Relations of type=multipolygon (or type=boundary).
*
* Area IDs are unique regardless of whether the Area was created
* from a Way or from a Relation.
*/
class Area : public Object, boost::less_than_comparable<Area> {
friend class Osmium::Geometry::MultiPolygon;
WayNodeList m_node_list;
mutable geos::geom::MultiPolygon* m_geos_geometry;
const geos::geom::MultiPolygon* geos_geometry() const {
return m_geos_geometry;
}
public:
/// Construct an Area object from a Relation object.
Area(const Relation& relation) :
Object(relation),
m_node_list(),
m_geos_geometry() {
id((id() * 2) + sgn(id()));
}
/// Construct an Area object from a Way object.
Area(const Way& way) :
Object(way),
m_node_list(way.nodes()),
m_geos_geometry() {
id(id() * 2);
}
Area(const Area& area) :
Object(area),
m_node_list(area.m_node_list),
m_geos_geometry(dynamic_cast<geos::geom::MultiPolygon*>(area.m_geos_geometry->clone())) {
}
Area& operator=(const Area& area) {
id(area.id());
version(area.version());
changeset(area.changeset());
timestamp(area.timestamp());
endtime(area.endtime());
uid(area.uid());
user(area.user());
visible(area.visible());
tags(area.tags());
m_node_list = area.m_node_list;
m_geos_geometry = dynamic_cast<geos::geom::MultiPolygon*>(area.m_geos_geometry->clone());
return *this;
}
~Area() {
delete m_geos_geometry;
}
osm_object_type_t type() const {
return AREA;
}
/// Was this Area created from a Way or Relation?
bool from_way() const {
return (id() % 2) == 0;
}
/// ID of the Way or Relation objects this Area was created from.
osm_object_id_t orig_id() const {
return id() / 2;
}
const Area& geos_geometry(geos::geom::MultiPolygon* multipolygon) const {
m_geos_geometry = multipolygon;
return *this;
}
}; // class Area
/**
* Areas can be ordered by id and version.
* Note that we use the absolute value of the id for a
* better ordering of objects with negative id.
*/
inline bool operator<(const Area& lhs, const Area& rhs) {
if (lhs.id() == rhs.id()) {
return lhs.version() < rhs.version();
} else {
return std::abs(lhs.id()) < std::abs(rhs.id());
}
}
/**
* Ordering for shared_ptrs of Areas.
*/
inline bool operator<(const shared_ptr<Area const>& lhs, const shared_ptr<Area const>& rhs) {
return *lhs < *rhs;
}
} // namespace OSM
} // namespace Osmium
#endif // OSMIUM_OSM_AREA_HPP
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