X-Git-Url: http://gb7djk.dxcluster.net/gitweb/gitweb.cgi?a=blobdiff_plain;f=perl%2FDXBearing.pm;h=db6f4686d0a75ed89c32e0c32e28509ae233bb5a;hb=5835ca385fb719194163512276666aaf75e82484;hp=e3aac65e9ffee4ae8b18ae308104fcc7b9601769;hpb=9b47e7023d41616a9efa885ef9338277dc2ab851;p=spider.git

diff --git a/perl/DXBearing.pm b/perl/DXBearing.pm
index e3aac65e..db6f4686 100644
--- a/perl/DXBearing.pm
+++ b/perl/DXBearing.pm
@@ -8,7 +8,7 @@
 #
 # Copyright (c) 1998 - Dirk Koopman G1TLH
 #
-# $Id$
+#
 #
 
 package DXBearing;
@@ -21,12 +21,6 @@ use vars qw($pi);
 
 $pi = 3.14159265358979;
 
-use vars qw($VERSION $BRANCH);
-$VERSION = sprintf( "%d.%03d", q$Revision$ =~ /(\d+)\.(\d+)/ );
-$BRANCH = sprintf( "%d.%03d", q$Revision$ =~ /\d+\.\d+\.(\d+)\.(\d+)/  || (0,0));
-$main::build += $VERSION;
-$main::branch += $BRANCH;
-
 # convert a qra locator into lat/long in DEGREES
 sub qratoll
 {
@@ -107,6 +101,20 @@ sub bdist
 	return (rd($az), $dx);
 }
 
+# just the distance - parameters as above
+sub distance
+{
+	my $hn = dr(shift);
+	my $he = dr(shift);
+	my $n = dr(shift);
+	my $e = dr(shift);
+	return (0, 0) if $hn == $n && $he == $e;
+	my $co = cos($he-$e)*cos($hn)*cos($n)+sin($hn)*sin($n);
+	my $ca = $co ? atan(abs(sqrt(1-$co*$co)/$co)) : $pi;
+	$ca = $pi-$ca if $co < 0;
+	my $dx = 6367*$ca;
+}
+
 # turn a lat long string into floating point lat and long
 sub stoll
 {