diff options
Diffstat (limited to 'examples/cpp')
| -rw-r--r-- | examples/cpp/route_guide/route_guide_server.cc | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/examples/cpp/route_guide/route_guide_server.cc b/examples/cpp/route_guide/route_guide_server.cc index 24a4184a56..5867c16712 100644 --- a/examples/cpp/route_guide/route_guide_server.cc +++ b/examples/cpp/route_guide/route_guide_server.cc @@ -51,6 +51,7 @@ float ConvertToRadians(float num) { return num * 3.1415926 /180; } +// The formula is based on http://mathforum.org/library/drmath/view/51879.html float GetDistance(const Point& start, const Point& end) { const float kCoordFactor = 10000000.0; float lat_1 = start.latitude() / kCoordFactor; |