point towards flock centroid

model.py

@@ -18,9 +18,11 @@ class Flock:
         lats = list()
         lons = list()
         speeds = list()
+        bearings = list()
         n = 0
         for b in bikes:
             speeds.append(b['speed'])
+            bearings.append(b.get('bearing', 0))
             lats.append(float(b['point'][1]))
             lons.append(float(b['point'][0]))
             n += 1
@@ -40,6 +42,7 @@ class Bike(Document):
     point = GeoPointField()
     destination = GeoPointField(required=True)
     speed = FloatField(default=0)
+    bearing = FloatField(default=0)
     last_update = DateTimeField(default=datetime.datetime.utcnow)
 
     def __init__(self, *args, **kwargs):
@@ -52,9 +55,16 @@ class Bike(Document):
         self.bearing = bearing
         self.save()
 
-    def heading_to(self, point):
-        s = LatLon(Latitude(self.point[1]), Longitude(self.point[0]))
-        t = LatLon(Latitude(point[1]), Longitude(point[0]))
+    def heading_to(self, target):
+        s = LatLon(Latitude(self.point[1]),
+                   Longitude(self.point[0]))
+        if type(target) is list:
+            t = LatLon(Latitude(target[0]),
+                       Longitude(target[1]))
+        else:
+            t = target
+
+        print(s, t)
         return s.heading_initial(t)
 
     def distance_to(self, point):
@@ -62,7 +72,6 @@ class Bike(Document):
                                  (point[1],
                                   point[0])).meters
 
-
     def get_point(self):
         return (self.point[1],
                 self.point[0])
@@ -71,7 +80,6 @@ class Bike(Document):
         return (self.destination[1],
                 self.destination[0])
 
-
     def find_flock(self, point_altruism=0.1, dest_altruism=0.2):
         """
         :return: list of Bike objects
@@ -82,7 +90,6 @@ class Bike(Document):
         local_radius = trip_len * point_altruism
         destination_radius = trip_len * dest_altruism
 
-
         # TODO: filter by timestamp
 
         # these are bikes around me
@@ -116,8 +123,10 @@ class Bike(Document):
         """
         flock = Flock(self.find_flock())
         if flock.size > 1:  # no flocking with self!
-            flock_heading: self.heading_to(flock.centroid)
-            flock_distance: distance.geodesic(self.point, self.destination).meters
+            flock_heading = self.heading_to(flock.centroid)
+            flock_distance = distance.geodesic((self.point[1],
+                                                self.point[0]), (self.destination[1],
+                                                                 self.destination[0])).meters
             return {'flock_heading': flock_heading,
                     'flock_distance': flock_distance,
                     'flock_avg_speed': flock.mean_speed,

server.py

@@ -37,10 +37,12 @@ def update(bike_id):
     speed = float(request.args.get('speed', None))
     bearing = float(request.args.get('bearing', None))
 
-    
     bike.update(lat, lon, speed, bearing)
+
+    print('d', bike.destination, bike.flock_data())
     return jsonify(
-        dest_heading=bike.heading_to(bike.destination),
+        dest_heading=bike.heading_to([bike.destination[1],
+                                      bike.destination[0]]),
         dest_distance=bike.distance_to(bike.destination),
         speed=bike.speed,
         **bike.flock_data())