AC_WPNav: get_terrain_offset and get_vector_NEU made public

libraries/AC_WPNav/AC_WPNav.h

@@ -49,6 +49,13 @@ public:
     };
     AC_WPNav::TerrainSource get_terrain_source() const;
 
+    // get terrain's altitude (in cm above the ekf origin) at the current position (+ve means terrain below vehicle is above ekf origin's altitude)
+    bool get_terrain_offset(float& offset_cm);
+
+    // convert location to vector from ekf origin.  terrain_alt is set to true if resulting vector's z-axis should be treated as alt-above-terrain
+    //      returns false if conversion failed (likely because terrain data was not available)
+    bool get_vector_NEU(const Location &loc, Vector3f &vec, bool &terrain_alt);
+
     ///
     /// waypoint controller
     ///
@@ -216,13 +223,6 @@ protected:
         uint8_t wp_yaw_set              : 1;    // true if yaw target has been set
     } _flags;
 
-    // get terrain's altitude (in cm above the ekf origin) at the current position (+ve means terrain below vehicle is above ekf origin's altitude)
-    bool get_terrain_offset(float& offset_cm);
-
-    // convert location to vector from ekf origin.  terrain_alt is set to true if resulting vector's z-axis should be treated as alt-above-terrain
-    //      returns false if conversion failed (likely because terrain data was not available)
-    bool get_vector_NEU(const Location &loc, Vector3f &vec, bool &terrain_alt);
-
     // helper function to calculate scurve jerk and jerk_time values
     // updates _scurve_jerk and _scurve_jerk_time
     void calc_scurve_jerk_and_jerk_time();