Sketch in what trackpoint writing might look like...

diff --git a/gpsbabel/magproto.c b/gpsbabel/magproto.c
index ab038c2c8b560d823d61da3459bf741c2455177d..006ec951e2475e9d4b4cb6dfc61e44d431820f3b 100644 (file)
--- a/gpsbabel/magproto.c
+++ b/gpsbabel/magproto.c
@@ -1120,6 +1120,54 @@ mag_waypt_pr(const waypoint *waypointp)
        }
 }
 
+static
+void mag_track_nop(const route_head *rte)
+{
+       return;
+}
+
+static
+void mag_track_disp(const waypoint *waypointp)
+{
+       double ilon, ilat;
+       double lon, lat;
+       int lon_deg, lat_deg;
+       char obuf[200];
+       int hms=0,fracsec=0;    /* FIXME: Read HMS from waypoint time */
+       int date=0;             /* FIXME: Read HMS from waypoint time */
+
+       ilat = waypointp->position.latitude.degrees;
+       ilon = waypointp->position.longitude.degrees;
+
+       lon = fabs(ilon);
+       lat = fabs(ilat);
+
+       lon_deg = lon;
+       lat_deg = lat;
+
+       lon = (lon - lon_deg) * 60.0;
+       lat = (lat - lat_deg) * 60.0;
+
+       lon = (lon_deg * 100.0 + lon);
+       lat = (lat_deg * 100.0 + lat);
+
+       /*
+        *      FIXME: Utterly untested.   LIkely wrong.
+        */
+       sprintf(obuf,"PMGNTRK,%4.3f,%c,%4.3f,%c,%-.f,%c,%d.%d,A,,%d", 
+               lat, ilat < 0 ? 'S' : 'N',
+               lon, ilon < 0 ? 'W' : 'E',
+               waypointp->position.altitude.altitude_meters == unknown_alt ?
+                        0 : waypointp->position.altitude.altitude_meters,
+                       'M',hms,fracsec,date);
+       mag_writemsg(obuf);
+}
+
+static
+void mag_track_pr()
+{
+       route_disp_all(mag_track_nop, mag_track_nop, mag_track_disp);
+}
 
 static void
 mag_write(void)
@@ -1129,7 +1177,17 @@ mag_write(void)
         * only 8 bytes, we'll conserve them.
         */
        setshort_whitespace_ok(mkshort_handle, 0);
-       waypt_disp_all(mag_waypt_pr);
+       switch (global_opts.objective)
+       {
+               case trkdata:
+                       mag_track_pr();
+                       break;
+               case wptdata:
+                       waypt_disp_all(mag_waypt_pr);
+                       break;
+               default:
+                       fatal(MYNAME ": Routes are not yet supported\n");
+       }
 }
 
 ff_vecs_t mag_vecs = {