fix trx and rx heights and improve calculations

[flightgear.git] / src / Navaids / fixlist.cxx

diff --git a/src/Navaids/fixlist.cxx b/src/Navaids/fixlist.cxx
index 935886cbd037fd4090fe246fbaaeeb6e56f7a568..50c06ac563c804bb99eda19862fc2921386b20ac 100644 (file)
--- a/src/Navaids/fixlist.cxx
+++ b/src/Navaids/fixlist.cxx
@@ -2,7 +2,7 @@
 //
 // Written by Curtis Olson, started April 2000.
 //
-// Copyright (C) 2000  Curtis L. Olson - curt@flightgear.org
+// Copyright (C) 2000  Curtis L. Olson - http://www.flightgear.org/~curt
 //
 // This program is free software; you can redistribute it and/or
 // modify it under the terms of the GNU General Public License as
@@ -16,20 +16,31 @@
 //
 // You should have received a copy of the GNU General Public License
 // along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 //
 // $Id$
 
 
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
+
+#include <algorithm>
+
 #include <simgear/debug/logstream.hxx>
-#include <simgear/misc/fgstream.hxx>
+#include <simgear/misc/sgstream.hxx>
+#include <simgear/misc/sg_path.hxx>
 #include <simgear/math/sg_geodesy.hxx>
 
 #include "fixlist.hxx"
+#include <Navaids/fix.hxx>
+#include <Airports/simple.hxx>
 
-
-FGFixList *current_fixlist;
-
+FGFix::FGFix(const std::string& aIdent, const SGGeod& aPos) :
+  FGPositioned(FIX, aIdent, aPos)
+{
+  init(true); // init FGPositioned
+}
 
 // Constructor
 FGFixList::FGFixList( void ) {
@@ -42,73 +53,28 @@ FGFixList::~FGFixList( void ) {
 
 
 // load the navaids and build the map
-bool FGFixList::init( FGPath path ) {
-    FGFix fix;
-
-    fixlist.erase( fixlist.begin(), fixlist.end() );
-
-    fg_gzifstream in( path.str() );
+bool FGFixList::init(const SGPath& path ) {
+    sg_gzifstream in( path.str() );
     if ( !in.is_open() ) {
-        FG_LOG( FG_GENERAL, FG_ALERT, "Cannot open file: " << path.str() );
+        SG_LOG( SG_GENERAL, SG_ALERT, "Cannot open file: " << path.str() );
         exit(-1);
     }
 
-    // read in each line of the file
-
+    // toss the first two lines of the file
+    in >> skipeol;
     in >> skipeol;
-    in >> skipcomment;
-
-#ifdef __MWERKS__
-
-    char c = 0;
-    while ( in.get(c) && c != '\0' && fix.get_ident() != "[End]" ) {
-        in.putback(c);
-        in >> fix;
-       if ( fix.get_ident() != "[End]" ) {
-           fixlist[fix.get_ident()] = fix;
-       }
-        in >> skipcomment;
-    }
-
-#else
-
-    while ( ! in.eof() && fix.get_ident() != "[End]" ) {
-        in >> fix;
-       /* cout << "id = " << n.get_ident() << endl;
-       cout << " type = " << n.get_type() << endl;
-       cout << " lon = " << n.get_lon() << endl;
-       cout << " lat = " << n.get_lat() << endl;
-       cout << " elev = " << n.get_elev() << endl;
-       cout << " freq = " << n.get_freq() << endl;
-       cout << " range = " << n.get_range() << endl; */
-       if ( fix.get_ident() != "[End]" ) {
-           fixlist[fix.get_ident()] = fix;
-       }
-        in >> skipcomment;
-    }
-
-#endif
-
-    return true;
-}
-
 
-// query the database for the specified frequency, lon and lat are in
-// degrees, elev is in meters
-bool FGFixList::query( const string& ident, double lon, double lat, double elev,
-                      FGFix *fix, double *heading, double *dist )
-{
-    *fix = fixlist[ident];
-    if ( fix->get_ident() == "" ) {
-       return false;
+    // read in each remaining line of the file
+    while ( ! in.eof() ) {
+      double lat, lon;
+      std::string ident;
+      in >> lat >> lon >> ident;
+      if (lat > 95) break;
+
+      // fix gets added to the FGPositioned spatial indices, so we don't need
+      // to hold onto it here.
+      new FGFix(ident, SGGeod::fromDeg(lon, lat));
+      in >> skipcomment;
     }
-
-    double az1, az2, s;
-    geo_inverse_wgs_84( elev, lat, lon, 
-                       fix->get_lat(), fix->get_lon(),
-                       &az1, &az2, &s );
-    // cout << "  dist = " << s << endl;
-    *heading = az2;
-    *dist = s;
     return true;
 }