[GRASS-SVN] r45812 - grass-addons/display/d.barb

[svn_grass at osgeo.org]

Author: hamish
Date: 2011-03-29 23:09:40 -0700 (Tue, 29 Mar 2011)
New Revision: 45812

Modified:
   grass-addons/display/d.barb/draw.c
   grass-addons/display/d.barb/main.c
Log:
orient wind barbs the right way around (feather is downwind)

Modified: grass-addons/display/d.barb/draw.c
===================================================================
--- grass-addons/display/d.barb/draw.c	2011-03-30 05:25:03 UTC (rev 45811)
+++ grass-addons/display/d.barb/draw.c	2011-03-30 06:09:40 UTC (rev 45812)
@@ -218,13 +218,17 @@
 
     G_debug(4, "draw_feather()");
 
-    /* barb points to FROM direction */
     angle = compass_deg - 90;
     if (angle < 0)
 	angle += 360;
     else if (angle > 360)
 	angle -= 360;
 
+    /* barb points to FROM direction */
+    angle += 180;
+    if (angle > 360)
+	angle -= 360;
+
     rot_angle = angle + 60;
     if (rot_angle > 360)
 	rot_angle -= 360;

Modified: grass-addons/display/d.barb/main.c
===================================================================
--- grass-addons/display/d.barb/main.c	2011-03-30 05:25:03 UTC (rev 45811)
+++ grass-addons/display/d.barb/main.c	2011-03-30 06:09:40 UTC (rev 45812)
@@ -32,6 +32,7 @@
 	*color_opt, *type_opt, *skip_opt, *scale_opt,
 	*vinput_opt, *vlayer_opt, *style_opt, *keyat_opt,
 	*keyvelo_opt, *keyfont_opt, *peak_opt;
+    struct Flag *from_to;
 
     int color, aspect_type, skip, vlayer, style;
     int is_vector, is_component;	/* boolean */
@@ -150,6 +151,12 @@
     keyfont_opt->description = _("Font size used in legend");
     keyfont_opt->guisection = _("Legend");
 
+    /* TODO */
+    from_ro = G_define_flag();
+    from_to->key = 'r';
+    from_to->description =
+	_("Reverse direction 180 degrees");
+
     if (G_parser(argc, argv))
 	exit(EXIT_FAILURE);