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| EARTH_RADIUS = 6378.137
def rad(d):
return d * math.pi / 180.0
def get_distance(job_lat, job_lon, user_lat, user_lon):
rad_job_lat = rad(job_lat)
rad_user_lat = rad(user_lat)
rad_job_lon = rad(job_lon)
rad_user_lon = rad(user_lon)
a = rad_job_lat - rad_user_lat
b = rad_job_lon - rad_user_lon
s = 2 * math.asin(math.sqrt(math.pow(math.sin(a / 2), 2) + math.cos(rad_job_lat)* math.cos(rad_user_lat) * math.pow(math.sin(b / 2), 2)))
s = s * EARTH_RADIUS
s = round(s * 10000) / 10000 # 单位：Km
return s
|