Method get_spawnpoints_in_hex

pogom/models.py:287–330

(cls, center, steps)

    @classmethod
    def get_spawnpoints_in_hex(cls, center, steps):
        log.info('Finding spawn points {} steps away'.format(steps))

        n, e, s, w = hex_bounds(center, steps)

        query = (Pokemon
                 .select(Pokemon.latitude.alias('lat'),
                         Pokemon.longitude.alias('lng'),
                         ((Pokemon.disappear_time.minute * 60) + Pokemon.disappear_time.second).alias('time'),
                         Pokemon.spawnpoint_id
                         ))
        query = (query.where((Pokemon.latitude <= n) &
                             (Pokemon.latitude >= s) &
                             (Pokemon.longitude >= w) &
                             (Pokemon.longitude <= e)
                             ))
        # Sqlite doesn't support distinct on columns
        if args.db_type == 'mysql':
            query = query.distinct(Pokemon.spawnpoint_id)
        else:
            query = query.group_by(Pokemon.spawnpoint_id)

        s = list(query.dicts())

        # The distance between scan circles of radius 70 in a hex is 121.2436
        # steps - 1 to account for the center circle then add 70 for the edge
        step_distance = ((steps - 1) * 121.2436) + 70
        # Compare spawnpoint list to a circle with radius steps * 120
        # Uses the direct geopy distance between the center and the spawnpoint.
        filtered = []

        for idx, sp in enumerate(s):
            if geopy.distance.distance(center, (sp['lat'], sp['lng'])).meters <= step_distance:
                filtered.append(s[idx])

        # at this point, 'time' is DISAPPEARANCE time, we're going to morph it to APPEARANCE time
        for location in filtered:
            # examples: time    shifted
            #           0       (   0 + 2700) = 2700 % 3600 = 2700 (0th minute to 45th minute, 15 minutes prior to appearance as time wraps around the hour)
            #           1800    (1800 + 2700) = 4500 % 3600 =  900 (30th minute, moved to arrive at 15th minute)
            # todo: this DOES NOT ACCOUNT for pokemons that appear sooner and live longer, but you'll _always_ have at least 15 minutes, so it works well enough
            location['time'] = cls.get_spawn_time(location['time'])

        return filtered


class Pokestop(BaseModel):