/usr/include/osmium/osm/position.hpp is in libosmium-dev 0.0~20140910-9a069af-1+b1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 | #ifndef OSMIUM_OSM_POSITION_HPP
#define OSMIUM_OSM_POSITION_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 <cmath>
#include <ostream>
#include <stdint.h>
#include <boost/operators.hpp>
#include <boost/integer_traits.hpp>
namespace Osmium {
namespace OSM {
const int coordinate_precision = 10000000;
namespace {
inline int32_t double_to_fix(double c) {
return round(c * coordinate_precision);
}
inline double fix_to_double(int32_t c) {
return static_cast<double>(c) / coordinate_precision;
}
}
/**
* Positions define a place on earth.
*
* Positions are stored in 32 bit integers for the x and y
* coordinates, respectively. This gives you an accuracy of a few
* centimeters, good enough for %OSM use. (The main %OSM database
* uses the same scheme.)
*
* An undefined (invalid) Position can be created by calling the
* constructor without parameters.
*
* Coordinates are never checked whether they are inside bounds.
*/
class Position : boost::totally_ordered<Position> {
public:
/// this value is used for a coordinate to mark it as invalid or undefined
static const int32_t invalid = boost::integer_traits<int32_t>::const_max;
/**
* Create undefined Position.
*/
explicit Position() :
m_x(invalid),
m_y(invalid) {
}
explicit Position(int32_t x, int32_t y) :
m_x(x),
m_y(y) {
}
explicit Position(int64_t x, int64_t y) :
m_x(x),
m_y(y) {
}
explicit Position(double lon, double lat) :
m_x(double_to_fix(lon)),
m_y(double_to_fix(lat)) {
}
bool defined() const {
return m_x != invalid && m_y != invalid;
}
int32_t x() const {
return m_x;
}
int32_t y() const {
return m_y;
}
Position& x(int32_t x) {
m_x = x;
return *this;
}
Position& y(int32_t y) {
m_y = y;
return *this;
}
double lon() const {
return fix_to_double(m_x);
}
double lat() const {
return fix_to_double(m_y);
}
Position& lon(double lon) {
m_x = double_to_fix(lon);
return *this;
}
Position& lat(double lat) {
m_y = double_to_fix(lat);
return *this;
}
private:
int32_t m_x;
int32_t m_y;
};
/**
* Positions are equal if both coordinates are equal.
*/
inline bool operator==(const Position& p1, const Position& p2) {
return p1.x() == p2.x() && p1.y() == p2.y();
}
/**
* Compare two positions by comparing first the x and then the
* y coordinate.
* If the position is invalid the result is undefined.
*/
inline bool operator<(const Position& p1, const Position& p2) {
if (p1.x() == p2.x()) {
return p1.y() < p2.y();
} else {
return p1.x() < p2.x();
}
}
inline std::ostream& operator<<(std::ostream& out, const Position& position) {
out << '(' << position.lon() << ',' << position.lat() << ')';
return out;
}
} // namespace OSM
} // namespace Osmium
#endif // OSMIUM_OSM_POSITION_HPP
|