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/*
* geoposition.cpp
* Copyright (C) 2011 Nicolas Martin, Université de Montréal
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "geoposition.h"
#include <cmath>
GeoPosition::GeoPosition(qreal lat, qreal lon) :
lat(lat), lon(lon)
{
}
qreal toRad(double deg) {
return deg * M_PI / 180.0;
}
qreal GeoPosition::distanceFrom(GeoPosition *other) {
qreal R = 6371; // Diameter of the Earth
qreal lat1 = toRad(this->getLat()),
lat2 = toRad(other->getLat()),
lon1 = toRad(this->getLon()),
lon2 = toRad(other->getLon());
return acos(sin(lat1) * sin(lat2) +
cos(lat1) * cos(lat2) *
cos(lon2 - lon1)) * R;
}
QDataStream& operator<<(QDataStream &ds, const GeoPosition &pos)
{
ds << pos.lat << pos.lon;
return ds;
}
QDataStream& operator>>(QDataStream &ds, GeoPosition &pos)
{
ds >> pos.lat >> pos.lon;
return ds;
}
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