From 7c57d412bb35393f6ae97bd01b3028c9074dc5ec Mon Sep 17 00:00:00 2001
From: Kaj-Michael Lang <milang@tal.org>
Date: Sun, 27 Jan 2008 11:12:23 +0200
Subject: [PATCH] Don't allow negative headings

---
 src/gps.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/gps.c b/src/gps.c
index 06c9ac9..3ef0ebf 100644
--- a/src/gps.c
+++ b/src/gps.c
@@ -357,6 +357,7 @@ gps_simulate_move(Gps *gps)
 {
 static gdouble slat=0, slon=0;
 gdouble plat, plon;
+gfloat h;
 g_assert(gps);
 
 if (g_random_double()<0.5) {
@@ -373,7 +374,8 @@ BOUND(gps->data.lon, -80.0, 80.0);
 g_debug("Sim: %f %f\n", gps->data.lat, gps->data.lon);
 
 gps->data.speed=1+g_random_double_range(0.1, 10.0);
-gps->data.heading=calculate_course(plat, plon, gps->data.lat, gps->data.lon);
+h=calculate_course(plat, plon, gps->data.lat, gps->data.lon);
+gps->data.heading=(h<0) ? 360+h : h;
 gps->data.time=time(NULL);
 gps_data_integerize(&gps->data);
 track_add(&gps->data, FALSE);
-- 
2.39.5