/usr/include/osgEarth/GeoMath is in libosgearth-dev 2.4.0+dfsg-6.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 | /* -*-c++-*- */
/* osgEarth - Dynamic map generation toolkit for OpenSceneGraph
* Copyright 2008-2013 Pelican Mapping
* http://osgearth.org
*
* osgEarth is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>
*/
#ifndef OSGEARTH_GEOMATH_H
#define OSGEARTH_GEOMATH_H 1
#include <osgEarth/Common>
#include <osgEarth/GeoCommon>
#include <osgEarth/SpatialReference>
#include <osg/CoordinateSystemNode>
namespace osgEarth
{
/**
* Useful calculations for lat/long points.
* Converted from http://www.movable-type.co.uk/scripts/latlong.html
*/
class OSGEARTH_EXPORT GeoMath
{
public:
/**
*Computes the distance between the given points in meters using the Haversine formula
* @param lat1Rad
* The start latitude in radians
* @param lon1Rad
* The start longitude in radians
* @param lat2Rad
* The end latitude in radians
* @param lon2Rad
* The end longitude in radians
* @param radius
* The radius of the earth in meters
* @returns
* The distance between the two points in meters
*/
static double distance(double lat1Rad, double lon1Rad,
double lat2Rad, double lon2Rad,
double radius = osg::WGS_84_RADIUS_EQUATOR);
/**
*Computes the distance covered by the given path in meters using the Haversine formula
*Assumes the points in Lon, Lat in degrees
*/
static double distance(const std::vector< osg::Vec3d > &points, double radius = osg::WGS_84_RADIUS_EQUATOR);
/**
* Computes the distance between two points, in meters.
*/
static double distance(const osg::Vec3d& p1, const osg::Vec3d& p2, const SpatialReference* srs);
/**
* Computes the initial bearing from one point to the next in radians
* @param lat1Rad
* The start latitude in radians
* @param lon1Rad
* The start longitude in radians
* @param lat2Rad
* The end latitude in radians
* @param lon2Rad
* The end longitude in radians
* @returns
* The initial bearing in radians
*/
static double bearing(double lat1Rad, double lon1Rad,
double lat2Rad, double lon2Rad);
/**
*Computes the midpoint between two points
* @param lat1Rad
* The start latitude in radians
* @param lon1Rad
* The start longitude in radians
* @param lat2Rad
* The end latitude in radians
* @param lon2Rad
* The end longitude in radians
* @param out_latRad
* The latitude of the midpoint in radians
* @param out_lonRad
* The longitude of the midpoint in radians
*/
static void midpoint(double lat1Rad, double lon1Rad,
double lat2Rad, double lon2Rad,
double &out_latRad, double &out_lonRad);
/**
* Computes a great-circle interpolation from one lat/long to another,
* where t => [0..1].
*/
static void interpolate(
double lat1Rad, double lon1Rad,
double lat2Rad, double lon2Rad,
double t,
double& out_latRad, double& out_lonRad );
/**
* Computes the destination point given a start point, a bearing and a distance
* @param lat1Rad
* The latitude in radians
* @param lon1Rad
* The longitude in radians
* @param bearingRad
* The bearing in radians
* @param distance
* The distance in meters
* @param out_latRad
* The destination point's latitude in radians
* @param out_lonRad
* The destination points' longitude in radians
* @param radius
* The radius of the earth in meters
*/
static void destination(double lat1Rad, double lon1Rad,
double bearingRad, double distance,
double &out_latRad, double &out_lonRad,
double radius = osg::WGS_84_RADIUS_EQUATOR);
/**
* Calculates the minimum and maximum latitudes along a great circle
* between the two geodetic input points.
*/
static void greatCircleMinMaxLatitude(
double lat1Rad, double lon1Rad,
double lat2Rad, double lon2Rad,
double& out_minLatRad, double& out_maxLatRad);
/**
* Computes the distance between two points in meters following a rhumb line
* @param lat1Rad
* The start latitude in radians
* @param lon1Rad
* The start longitude in radians
* @param lat2Rad
* The end latitude in radians
* @param lon2Rad
* The end longitude in radians
* @param radius
* The radius of the earth in meters
* @returns
* The distance between the two points in meters following a rhumb line
*/
static double rhumbDistance(double lat1Rad, double lon1Rad,
double lat2Rad, double lon2Rad,
double radius = osg::WGS_84_RADIUS_EQUATOR);
/**
* Computes the distance between two points in meters following a rhumb line
* Assumes the points are in Lon, Lat in degrees
*/
static double rhumbDistance(const std::vector< osg::Vec3d > &points, double radius = osg::WGS_84_RADIUS_EQUATOR);
/**
*Computes the bearing of the rhumb line between two points in radians
* @param lat1Rad
* The start latitude in radians
* @param lon1Rad
* The start longitude in radians
* @param lat2Rad
* The end latitude in radians
* @param lon2Rad
* The end longitude in radians
*/
static double rhumbBearing(double lat1Rad, double lon1Rad,
double lat2Rad, double lon2Rad);
/** Computes the destination point given a start point, a bearing and a distance along a rhumb line
* @param lat1Rad
* The latitude in radians
* @param lon1Rad
* The longitude in radians
* @param bearingRad
* The bearing in radians
* @param distance
* The distance in meters
* @param out_latRad
* The destination point's latitude in radians
* @param out_lonRad
* The destination points' longitude in radians
* @param radius
* The radius of the earth in meters
*/
static void rhumbDestination(double lat1Rad, double lon1Rad,
double bearing, double distance,
double &out_latRad, double &out_lonRad,
double radius = osg::WGS_84_RADIUS_EQUATOR);
};
};
#endif
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