Olaf Flebbe:

[simgear.git] / simgear / magvar / magvar.cxx

diff --git a/simgear/magvar/magvar.cxx b/simgear/magvar/magvar.cxx
index 01e44e796982c94c3ef707c5b2a2a44cf80a321f..0e030d020b41f6b5182e113918b88c2418e8f9fa 100644 (file)
--- a/simgear/magvar/magvar.cxx
+++ b/simgear/magvar/magvar.cxx
@@ -2,7 +2,7 @@
 //
 // Written by Curtis Olson, started July 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
@@ -21,20 +21,18 @@
 // $Id$
 
 
-#ifdef HAVE_CONFIG_H
-#  include <config.h>
-#endif
-
 #include <math.h>
 
-#include <simgear/misc/fgpath.hxx>
 #include <simgear/magvar/magvar.hxx>
 
 #include "coremag.hxx"
 #include "magvar.hxx"
 
 
-SGMagVar::SGMagVar() {
+SGMagVar::SGMagVar()
+  : magvar(0.0),
+    magdip(0.0)
+{
 }
 
 SGMagVar::~SGMagVar() {
@@ -49,3 +47,11 @@ void SGMagVar::update( double lon, double lat, double alt_m, double jd ) {
     magdip = atan(field[5]/sqrt(field[3]*field[3]+field[4]*field[4]));
 }
 
+
+double sgGetMagVar( double lon, double lat, double alt_m, double jd ) {
+    // cout << "lat = " << lat << " lon = " << lon << " elev = " << alt_m
+    //      << " JD = " << jd << endl;
+
+    double field[6];
+    return calc_magvar( lat, lon, alt_m / 1000.0, (long)jd, field );
+}