From: curt <curt>
Date: Wed, 7 May 2003 17:41:37 +0000 (+0000)
Subject: Oops backout the last changes to these files.  I was diddling with some
X-Git-Url: https://git.mxchange.org/?a=commitdiff_plain;h=3c6b1bf9f2ddae78e0140c3b3ceb96fd8f0947fe;p=flightgear.git

Oops backout the last changes to these files.  I was diddling with some
time based extrapolation and this wasn't far enough along to be usable.
---

diff --git a/src/Network/native_fdm.cxx b/src/Network/native_fdm.cxx
index c098eae9f..8a8d743a9 100644
--- a/src/Network/native_fdm.cxx
+++ b/src/Network/native_fdm.cxx
@@ -382,117 +382,6 @@ void FGNetFDM2Props( FGNetFDM *net, bool net_byte_order ) {
 }
 
 
-// Do some ultra simplistic extrapolation for times when a network
-// packet get's dropped or delayed.
-//
-// If a valid net structure is passed in, just record the last
-// position/orientation.  If NULL is passed in, use the most recent
-// deltas to predict the new position.
-void FGNativeFDMSmooth( FGNetFDM *net ) {
-    double w = 0.25;
-    static double dlon = 0.0;
-    static double dlat = 0.0;
-    static double dalt = 0.0;
-    static double dphi = 0.0;
-    static double dtheta = 0.0;
-    static double dpsi = 0.0;
-
-    static double last_lon = 0.0;
-    static double last_lat = 0.0;
-    static double last_alt = 0.0;
-    static double last_phi = 0.0;
-    static double last_theta = 0.0;
-    static double last_psi = 0.0;
-
-    static bool primed = false;
-
-    if ( net ) {
-        if ( !primed ) {
-            last_lon = net->longitude;
-            last_lat = net->latitude;
-            last_alt = net->altitude;
-            last_phi = net->phi;
-            last_theta = net->theta;
-            last_psi = net->psi;
-
-            primed = true;
-        }
-
-        // update data;
-        dlon = (net->longitude - last_lon)*w + dlon*(1.0-w);
-        dlat = (net->latitude - last_lat)*w + dlat*(1.0-w);
-        dalt = (net->altitude - last_alt)*w + dalt*(1.0-w);
-        dphi = (net->phi - last_phi)*w + dphi*(1.0-w);
-        dtheta = (net->theta - last_theta)*w + dtheta*(1.0-w);
-        dpsi = (net->psi - last_psi)*w + dpsi*(1.0-w);
-
-        last_lon = net->longitude;
-        last_lat = net->latitude;
-        last_alt = net->altitude;
-        last_phi = net->phi;
-        last_theta = net->theta;
-        last_psi = net->psi;
-
-        printf( "Net: %.8f %.8f %.8f\n", last_phi, last_theta, last_psi );
-    } else {
-        if ( primed ) {
-            // do simple prediction
-            last_lon += dlon;
-            last_lat += dlat;
-            last_alt += dalt;
-            last_phi += dphi;
-            last_theta += dtheta;
-            last_psi += dpsi;
-
-            // Force values to stay sane ...
-            if ( last_lon < -SGD_2PI ) {
-                last_lon = 0; dlon = 0; primed = false;
-            }
-            if ( last_lon > SGD_2PI ) {
-                last_lon = 0; dlon = 0; primed = false;
-            }
-            if ( last_lat < -SGD_2PI ) {
-                last_lat = 0; dlat = 0; primed = false;
-            }
-            if ( last_lat > SGD_2PI ) {
-                last_lat = 0; dlat = 0; primed = false;
-            }
-            if ( last_alt < -1000 ) {
-                last_alt = 0; dalt = 0; primed = false;
-            }
-            if ( last_alt > 500000 ) {
-                last_alt = 0; dalt = 0; primed = false;
-            }
-            if ( last_phi < -SGD_2PI ) {
-                last_phi = 0; dphi = 0; primed = false;
-            }
-            if ( last_phi > SGD_2PI ) {
-                last_phi = 0; dphi = 0; primed = false;
-            }
-            if ( last_theta < -SGD_2PI ) {
-                last_theta = 0; dtheta = 0; primed = false;
-            }
-            if ( last_theta > SGD_2PI ) {
-                last_theta = 0; dtheta = 0; primed = false;
-            }
-            if ( last_psi < -SGD_2PI ) {
-                last_psi = 0; dpsi = 0; primed = false;
-            }
-            if ( last_psi > SGD_2PI ) {
-                last_psi = 0; dpsi = 0; primed = false;
-            }
-
-            printf( "Ext: %.8f %.8f %.8f\n", last_phi, last_theta, last_psi );
-            cur_fdm_state->_updateGeodeticPosition( last_lat, last_lon,
-                                                    last_alt
-                                                      * SG_METER_TO_FEET );
-            cur_fdm_state->_set_Euler_Angles( last_phi, last_theta, last_psi );
-        }
-    }
-
-}
-
-
 // process work for this port
 bool FGNativeFDM::process() {
     SGIOChannel *io = get_io_channel();
@@ -512,20 +401,10 @@ bool FGNativeFDM::process() {
 		FGNetFDM2Props( &buf );
 	    }
 	} else {
-            bool rcvd_data = false;
-            while ( io->read( (char *)(& buf), length ) == length ) {
+	    while ( io->read( (char *)(& buf), length ) == length ) {
 		SG_LOG( SG_IO, SG_DEBUG, "Success reading data." );
 		FGNetFDM2Props( &buf );
-                rcvd_data = true;
 	    }
-            if ( rcvd_data ) {
-                // mark this position for smoothing/extrapolation
-                FGNativeFDMSmooth( &buf );
-            } else {
-                // oops, no data, use past data to predict a new
-                // position/orientation.
-                FGNativeFDMSmooth( NULL );
-            }
 	}
     }
 
diff --git a/src/Network/native_fdm.hxx b/src/Network/native_fdm.hxx
index 23326e1d6..adb78ecbf 100644
--- a/src/Network/native_fdm.hxx
+++ b/src/Network/native_fdm.hxx
@@ -62,14 +62,6 @@ void FGProps2NetFDM( FGNetFDM *net, bool net_byte_order = true );
 // Update the property tree from the FGNetFDM structure.
 void FGNetFDM2Props( FGNetFDM *net, bool net_byte_order = true );
 
-// Do some ultra simplistic extrapolation for times when a network
-// packet get's dropped or delayed.
-//
-// If a valid net structure is passed in, just record the last
-// position/orientation.  If NULL is passed in, use the most recent
-// deltas to predict the new position.
-void FGNativeFDMSmooth( FGNetFDM *net );
-
 
 #endif // _FG_NATIVE_FDM_HXX