Add the current true heading to the tuned nav station into the property tree.

diff --git a/src/Cockpit/navcom.cxx b/src/Cockpit/navcom.cxx
index a3525f5e4d66f9b750b57f02d9cfe6050308674a..a67f67336597d8527cbe3eb3f28beb2da79592c7 100644 (file)
--- a/src/Cockpit/navcom.cxx
+++ b/src/Cockpit/navcom.cxx
@@ -58,6 +58,8 @@ FGNavCom::FGNavCom() :
     comm_vol_btn(0.0),
     nav_freq(0.0),
     nav_alt_freq(0.0),
+    nav_heading(0.0),
+    nav_radial(0.0),
     nav_target_radial(0.0),
     nav_vol_btn(0.0),
     nav_ident_btn(true)
@@ -179,6 +181,9 @@ FGNavCom::bind ()
            &FGNavCom::get_audio_btn, &FGNavCom::set_audio_btn );
     fgSetArchivable( propname );
 
+    snprintf(propname, 256, "/radios/nav[%d]/heading-deg", index);
+    fgTie( propname,  this, &FGNavCom::get_nav_heading );
+
     snprintf(propname, 256, "/radios/nav[%d]/radials/actual-deg", index);
     fgTie( propname,  this, &FGNavCom::get_nav_radial );
 
@@ -388,7 +393,7 @@ FGNavCom::update(double dt)
                             lat * SGD_RADIANS_TO_DEGREES,
                             lon * SGD_RADIANS_TO_DEGREES, 
                            nav_loclat, nav_loclon,
-                           &az1, &az2, &s );
+                           &nav_heading, &az2, &s );
        // cout << "az1 = " << az1 << " magvar = " << nav_magvar << endl;
        nav_radial = az2 - nav_twist;
        // cout << " heading = " << nav_heading
@@ -727,6 +732,16 @@ FGNavCom::get_nav_from_flag () const
 }
 
 
+/**
+ * Return the true heading to station
+ */
+double
+FGNavCom::get_nav_heading () const
+{
+    return nav_heading;
+}
+
+
 /**
  * Return the current radial.
  */

diff --git a/src/Cockpit/navcom.hxx b/src/Cockpit/navcom.hxx
index b05a2f9c42833661ebe621a72a80126157415b1e..5d18a118eb94fa88eeb784c2b9ec1f78636f24e1 100644 (file)
--- a/src/Cockpit/navcom.hxx
+++ b/src/Cockpit/navcom.hxx
@@ -88,7 +88,12 @@ class FGNavCom : public SGSubsystem
     bool nav_loc;
     double nav_freq;
     double nav_alt_freq;
-    double nav_radial;
+    double nav_heading;         // true heading to nav station
+    double nav_radial;          // current radial we are on (taking
+                                // into consideration the vor station
+                                // alignment which likely doesn't
+                                // match the magnetic alignment
+                                // exactly.)
     double nav_sel_radial;
     double nav_target_radial;
     double nav_loclon;
@@ -212,6 +217,7 @@ public:
     inline double get_nav_gs_dist() const { return nav_gs_dist; }
     inline double get_nav_gs_dist_signed() const { return nav_gs_dist_signed; }
     inline double get_nav_elev() const { return nav_elev; }
+    double get_nav_heading() const;
     double get_nav_radial() const;
     double get_nav_reciprocal_radial() const;
     inline double get_nav_target_gs() const { return nav_target_gs; }