Extrapolation of GPS position.

1 files changed, 20 insertions, 19 deletions

diff --git a/platform/location.hpp b/platform/location.hpp
index 1fc9ffd8c5..d927d7db21 100644
--- a/platform/location.hpp
+++ b/platform/location.hpp
@@ -27,6 +27,7 @@ namespace location
 
   enum TLocationSource
   {
+    EUndefine,
     EAppleNative,
     EWindowsNative,
     EAndroidNative,
@@ -41,25 +42,25 @@ namespace location
   class GpsInfo
   {
   public:
-    GpsInfo()
-      : m_horizontalAccuracy(100.0),  // use as a default accuracy
-        m_altitude(0.0), m_verticalAccuracy(-1.0), m_bearing(-1.0), m_speed(-1.0)
-    {
-    }
-
-    TLocationSource m_source;
-    double m_timestamp;           //!< seconds from 1st Jan 1970
-    double m_latitude;            //!< degrees
-    double m_longitude;           //!< degrees
-    double m_horizontalAccuracy;  //!< metres
-    double m_altitude;            //!< metres
-    double m_verticalAccuracy;    //!< metres
-    double m_bearing;             //!< positive degrees from the true North
-    double m_speed;               //!< metres per second
-
-    //bool HasAltitude() const { return m_verticalAccuracy >= 0.0; }
-    bool HasBearing() const  { return m_bearing >= 0.0; }
-    bool HasSpeed() const    { return m_speed >= 0.0; }
+    TLocationSource m_source = EUndefine;
+    /// \note |m_timestamp| is calculated based on platform methods which don't
+    /// guarantee that |m_timestamp| is monotonic. |m_monotonicTimeMs| should be added to
+    /// class |GpsInfo|. This time should be calculated based on Location::getElapsedRealtimeNanos()
+    /// method in case of Android. How to calculate such time in case of iOS should be
+    /// investigated.
+    /// \note For most cases |m_timestamp| is monotonic.
+    double m_timestamp = 0.0;             //!< seconds from 1st Jan 1970
+    double m_latitude = 0.0;              //!< degrees
+    double m_longitude = 0.0;             //!< degrees
+    double m_horizontalAccuracy = 100.0;  //!< metres
+    double m_altitude = 0.0;              //!< metres
+    double m_verticalAccuracy = -1.0;     //!< metres
+    double m_bearing = -1.0;              //!< positive degrees from the true North
+    double m_speed = -1.0;                //!< metres per second
+
+    bool IsValid() const { return m_source != EUndefine; }
+    bool HasBearing() const { return m_bearing >= 0.0; }
+    bool HasSpeed() const { return m_speed >= 0.0; }
   };
 
   /// GpsTrackInfo struct describes a point for GPS tracking