From 6e635692e21ebabbe76da7ce71ad8a4d483e16df Mon Sep 17 00:00:00 2001
From: curt <curt>
Date: Mon, 24 Nov 2003 21:08:44 +0000
Subject: [PATCH] Add support for passing alpha/beta values.

---
 src/Network/native_fdm.cxx | 8 ++++++++
 src/Network/net_fdm.hxx    | 4 +++-
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/Network/native_fdm.cxx b/src/Network/native_fdm.cxx
index 665004948..550fb49bb 100644
--- a/src/Network/native_fdm.cxx
+++ b/src/Network/native_fdm.cxx
@@ -133,6 +133,8 @@ void FGProps2NetFDM( FGNetFDM *net, bool net_byte_order ) {
     net->phi = cur_fdm_state->get_Phi();
     net->theta = cur_fdm_state->get_Theta();
     net->psi = cur_fdm_state->get_Psi();
+    net->alpha = cur_fdm_state->get_Alpha();
+    net->beta = cur_fdm_state->get_Beta();
     net->phidot = cur_fdm_state->get_Phi_dot_degps() * SG_DEGREES_TO_RADIANS;
     net->thetadot = cur_fdm_state->get_Theta_dot_degps()
         * SG_DEGREES_TO_RADIANS;
@@ -219,6 +221,8 @@ void FGProps2NetFDM( FGNetFDM *net, bool net_byte_order ) {
         htonf(net->phi);
         htonf(net->theta);
         htonf(net->psi);
+        htonf(net->alpha);
+        htonf(net->beta);
 
         htonf(net->phidot);
         htonf(net->thetadot);
@@ -292,6 +296,8 @@ void FGNetFDM2Props( FGNetFDM *net, bool net_byte_order ) {
         htonf(net->phi);
         htonf(net->theta);
         htonf(net->psi);
+        htonf(net->alpha);
+        htonf(net->beta);
 
         htonf(net->phidot);
         htonf(net->thetadot);
@@ -367,6 +373,8 @@ void FGNetFDM2Props( FGNetFDM *net, bool net_byte_order ) {
         cur_fdm_state->_set_Euler_Angles( net->phi,
                                           net->theta,
                                           net->psi );
+        cur_fdm_state->_set_Alpha( net->alpha );
+        cur_fdm_state->_set_Beta( net->beta );
         cur_fdm_state->_set_Euler_Rates( net->phidot,
 					 net->thetadot,
 					 net->psidot );
diff --git a/src/Network/net_fdm.hxx b/src/Network/net_fdm.hxx
index f40e7ddf4..0294d08fb 100644
--- a/src/Network/net_fdm.hxx
+++ b/src/Network/net_fdm.hxx
@@ -32,7 +32,7 @@
 
 #include <time.h> // time_t
 
-const int FG_NET_FDM_VERSION = 15;
+const int FG_NET_FDM_VERSION = 16;
 
 
 // Define a structure containing the top level flight dynamics model
@@ -62,6 +62,8 @@ public:
     float phi;			// roll (radians)
     float theta;		// pitch (radians)
     float psi;			// yaw or true heading (radians)
+    float alpha;                // angle of attack
+    float beta;                 // side slip angle
 
     // Velocities
     float phidot;		// roll rate (radians/sec)
-- 
2.39.5