Update FGRunway to process information from threshold.xml files.

[flightgear.git] / src / Airports / runways.cxx

diff --git a/src/Airports/runways.cxx b/src/Airports/runways.cxx
index fc70d8384237883cf6920471a80d7f7eb75d0576..f97cd14e83aee82c4c4dde7e078d2a77362ba50d 100644 (file)
--- a/src/Airports/runways.cxx
+++ b/src/Airports/runways.cxx
@@ -30,6 +30,8 @@
 
 #include <simgear/compiler.h>
 
+#include <simgear/props/props.hxx>
+
 #include <string>
 
 #include "runways.hxx"
@@ -71,7 +73,8 @@ FGRunway::FGRunway(FGAirport* aAirport, const string& aIdent,
   _airport(aAirport),
   _reciprocal(reciprocal),
   _displ_thresh(displ_thresh),
-  _stopway(stopway)
+  _stopway(stopway),
+  _ils(NULL)
 {
 }
 
@@ -135,3 +138,23 @@ SGGeod FGRunway::threshold() const
   return pointOnCenterline(_displ_thresh * SG_FEET_TO_METER);
 }
 
+void FGRunway::processThreshold(SGPropertyNode* aThreshold)
+{
+  assert(ident() == aThreshold->getStringValue("rwy"));
+  
+  double lon = aThreshold->getDoubleValue("lon"),
+    lat = aThreshold->getDoubleValue("lat");
+  SGGeod newThreshold(SGGeod::fromDegM(lon, lat, mPosition.getElevationM()));
+  
+  _heading = aThreshold->getDoubleValue("hdg-deg");
+  _displ_thresh = aThreshold->getDoubleValue("displ-m") * SG_METER_TO_FEET;
+  _stopway = aThreshold->getDoubleValue("stopw-m") * SG_METER_TO_FEET;
+  
+  // compute the new runway center, based on the threshold lat/lon, length,
+  // and any displaced threshold.
+  double offsetFt = (0.5 * _length) - _displ_thresh;
+  SGGeod newCenter;
+  double dummy;
+  SGGeodesy::direct(newThreshold, _heading, offsetFt * SG_FEET_TO_METER, newCenter, dummy);
+  mPosition = newCenter;
+}