From b2f49c86c5c4815ef77fe2659bf9b719078b2b1b Mon Sep 17 00:00:00 2001
From: Alex Zolotarev <alex@mapswithme.com>
Date: Tue, 24 Jun 2014 23:48:53 -1000
Subject: [PATCH] Utility functions

---
 map/map_tests/measurement_tests.cpp | 15 ++++++++++
 map/measurement_utils.cpp           | 43 +++++++++++++++++++++++++++++
 map/measurement_utils.hpp           |  5 ++++
 3 files changed, 63 insertions(+)

diff --git a/map/map_tests/measurement_tests.cpp b/map/map_tests/measurement_tests.cpp
index 429e87650b..ed39d65c52 100644
--- a/map/map_tests/measurement_tests.cpp
+++ b/map/map_tests/measurement_tests.cpp
@@ -64,3 +64,18 @@ UNIT_TEST(LatLonToDMS_NoRounding)
 
   TEST_EQUAL(FormatLatLonAsDMS(21.981112, -159.371112, 2), "21°58′52″N 159°22′16″W", ());
 }
+
+UNIT_TEST(FormatAltitude)
+{
+  Settings::Set("Units", Settings::Foot);
+  TEST_EQUAL(FormatAltitude(10000), "32808ft", ());
+  Settings::Set("Units", Settings::Metric);
+  TEST_EQUAL(FormatAltitude(5), "5m", ());
+}
+
+UNIT_TEST(FormatSpeed)
+{
+  Settings::Set("Units", Settings::Metric);
+  TEST_EQUAL(FormatSpeed(10), "36km/h", ());
+  TEST_EQUAL(FormatSpeed(1), "3.6km/h", ());
+}
diff --git a/map/measurement_utils.cpp b/map/measurement_utils.cpp
index 45ff88ac09..a182078d27 100644
--- a/map/measurement_utils.cpp
+++ b/map/measurement_utils.cpp
@@ -124,4 +124,47 @@ string FormatMercator(m2::PointD const & mercator, int dac)
   return FormatLatLon(MercatorBounds::YToLat(mercator.y), MercatorBounds::XToLon(mercator.x), dac);
 }
 
+string FormatAltitude(double altitudeInMeters)
+{
+  using namespace Settings;
+  Units u = Metric;
+  (void)Settings::Get("Units", u);
+
+  ostringstream sstream;
+  sstream << std::fixed << setprecision(0);
+  /// @todo Put string units resources.
+  switch (u)
+  {
+  case Yard: sstream << MetersToYards(altitudeInMeters) << "yd"; break;
+  case Foot: sstream << MetersToFeet(altitudeInMeters) << "ft"; break;
+  default: sstream << altitudeInMeters << "m"; break;
+  }
+  return sstream.str();
+}
+
+string FormatSpeed(double metersPerSecond)
+{
+  using namespace Settings;
+  Units u = Metric;
+  (void)Settings::Get("Units", u);
+
+  double perHour;
+  string res;
+
+  /// @todo Put string units resources.
+  switch (u)
+  {
+  case Yard:
+  case Foot:
+    perHour = metersPerSecond * 3600. / 1609.344;
+    res = ToStringPrecision(perHour, perHour >= 10.0 ? 0 : 1) + "mph";
+    break;
+  default:
+    perHour = metersPerSecond * 3600. / 1000.;
+    res = ToStringPrecision(perHour, perHour >= 10.0 ? 0 : 1) + "km/h";
+    break;
+  }
+  return res;
+}
+
 } // namespace MeasurementUtils
diff --git a/map/measurement_utils.hpp b/map/measurement_utils.hpp
index 28d41a9ac3..b2dddcef70 100644
--- a/map/measurement_utils.hpp
+++ b/map/measurement_utils.hpp
@@ -22,6 +22,11 @@ inline double YardToMiles(double yd) { return yd * 1760; }
 /// @return should be direction arrow drawed? false if distance is to small (< 1.0)
 bool FormatDistance(double m, string & res);
 
+/// We always use meters and feet/yards for altitude
+string FormatAltitude(double altitudeInMeters);
+/// km/h or mph
+string FormatSpeed(double metersPerSecond);
+
 /// @param[in] dac  Digits after comma in seconds.
 /// Use dac == 3 for our common conversions.
 string FormatLatLonAsDMS(double lat, double lon, int dac = 3);