def next_stop(self):
'''
Discover who is the next stop.
How it works:
- Calculate Bus distante from last stop.
- Calculate all distances between all stops and last stop.
- Get the stop that is more far from last stop and the stop distance
is smaller then bus distance from last stop.
- If there's none between, return the last stop.
'''
if not self.location_available:
return None
stops = self.route.stops.all()
if stops.count() > 0:
bus_lat, bus_lon = self.current_location_cached
to_lat, to_lon = self.route.to_stop.location
bus_distance = get_directions(bus_lat, bus_lon, to_lat, to_lon).meters
pos_list = [(x.latitude, x.longitude) for x in stops]
distances = get_distances([(to_lat, to_lon)], pos_list)
if distances:
d = distances.values()
nexts = filter(lambda d: d.meters < bus_distance, d)
if len(nexts) > 0:
distance = sorted(nexts, key=lambda item: item.meters)[0]
key = distances.keys()[distances.values().index(distance)]
index = pos_list.index(key[1])
return stops[index]
return self.route.to_stop
def is_moving(device_id):
'''
Returns True if the Bus has moved
more then 250m in the last 5 minutes.
'''
lat, lon = get_last_lat_lon(device_id)
positions = list(get_last_positions(device_id))
if lat and lon and positions:
distances = get_distances([(lat, lon)], positions)
distance = reduce(lambda acc, item: acc + item.meters, distances) / len(positions)
return distance > 250
return False
def is_moving(device_id):
'''
Returns True if the Bus has moved
more then 1000m in the last 5 minutes.
'''
lat, lon = get_last_lat_lon(device_id)
positions = list(get_last_positions(device_id))
if lat and lon and len(positions) > 1:
distances = get_distances([(lat, lon)], [positions[0], positions[-1]])
if distances:
distances = list(distances.values())
distance = abs(distances[0].meters - distances[-1].meters)
return distance >= 1000
return False
