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Diffstat (limited to 'dom/system/gonk/GeolocationUtil.cpp')
| -rw-r--r-- | dom/system/gonk/GeolocationUtil.cpp | 28 |
1 files changed, 0 insertions, 28 deletions
diff --git a/dom/system/gonk/GeolocationUtil.cpp b/dom/system/gonk/GeolocationUtil.cpp deleted file mode 100644 index 99d484a19..000000000 --- a/dom/system/gonk/GeolocationUtil.cpp +++ /dev/null @@ -1,28 +0,0 @@ -/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */ -/* vim: set ts=2 et sw=2 tw=80: */ -/* This Source Code Form is subject to the terms of the Mozilla Public - * License, v. 2.0. If a copy of the MPL was not distributed with this file, - * You can obtain one at http://mozilla.org/MPL/2.0/. */ - -#include "GeolocationUtil.h" - -double CalculateDeltaInMeter(double aLat, double aLon, double aLastLat, double aLastLon) -{ - // Use spherical law of cosines to calculate difference - // Not quite as correct as the Haversine but simpler and cheaper - const double radsInDeg = M_PI / 180.0; - const double rNewLat = aLat * radsInDeg; - const double rNewLon = aLon * radsInDeg; - const double rOldLat = aLastLat * radsInDeg; - const double rOldLon = aLastLon * radsInDeg; - // WGS84 equatorial radius of earth = 6378137m - double cosDelta = (sin(rNewLat) * sin(rOldLat)) + - (cos(rNewLat) * cos(rOldLat) * cos(rOldLon - rNewLon)); - if (cosDelta > 1.0) { - cosDelta = 1.0; - } else if (cosDelta < -1.0) { - cosDelta = -1.0; - } - return acos(cosDelta) * 6378137; -} - |