function mapBar2WGS84(x, y) {
    x = parseFloat(x) * 100000 % 36000000;
    y = parseFloat(y) * 100000 % 36000000;

    x1 = parseInt( - (((Math.cos(y / 100000)) * (x / 18000)) + ((Math.sin(x / 100000)) * (y / 9000))) + x);
    y1 = parseInt( - (((Math.sin(y / 100000)) * (x / 18000)) + ((Math.cos(x / 100000)) * (y / 9000))) + y);

    x2 = parseInt( - (((Math.cos(y1 / 100000)) * (x1 / 18000)) + ((Math.sin(x1 / 100000)) * (y1 / 9000))) + x + ((x > 0) ? 1 : -1));
    y2 = parseInt( - (((Math.sin(y1 / 100000)) * (x1 / 18000)) + ((Math.cos(x1 / 100000)) * (y1 / 9000))) + y + ((y > 0) ? 1 : -1));

    return [x2 / 100000.0, y2 / 100000.0];
}

from __future__ import division
import math
 
def mapBar2WGS84(lng, lat):
    """图吧坐标转WGS84坐标
    参数：
    lng - 经度
    lat - 纬度
    返回值：
    (经度, 纬度)
    """
    lng = float(lng) * 100000 % 36000000;
    lat = float(lat) * 100000 % 36000000;
    lng1 = int( - (((math.cos(lat / 100000)) * (lng / 18000)) + ((math.sin(lng / 100000)) * (lat / 9000))) + lng)
    lat1 = int( - (((math.sin(lat / 100000)) * (lng / 18000)) + ((math.cos(lng / 100000)) * (lat / 9000))) + lat)
    lng2 = int( - (((math.cos(lat1 / 100000)) * (lng1 / 18000)) + ((math.sin(lng1 / 100000)) * (lat1 / 9000))) + lng + (1 if lng > 0 else -1))
    lat2 = int( - (((math.sin(lat1 / 100000)) * (lng1 / 18000)) + ((math.cos(lng1 / 100000)) * (lat1 / 9000))) + lat + (1 if lat >0 else -1))
    return lng2 / 100000.0, lat2 / 100000.0

from __future__ import division
from math import pi,sqrt,sin,cos
 
a = 6378245.0
ee = 0.00669342162296594323
 
# World Geodetic System ==> Mars Geodetic System
def transform(wgLat, wgLon):
    """
    transform(latitude,longitude) , WGS84
    return (latitude,longitude) , GCJ02
    """
    if (outOfChina(wgLat, wgLon)):
        mgLat = wgLat
        mgLon = wgLon
        return
    dLat = transformLat(wgLon - 105.0, wgLat - 35.0)
    dLon = transformLon(wgLon - 105.0, wgLat - 35.0)
    radLat = wgLat / 180.0 * pi
    magic = sin(radLat)
    magic = 1 - ee * magic * magic
    sqrtMagic = sqrt(magic)
    dLat = (dLat * 180.0) / ((a * (1 - ee)) / (magic * sqrtMagic) * pi)
    dLon = (dLon * 180.0) / (a / sqrtMagic * cos(radLat) * pi)
    mgLat = wgLat + dLat
    mgLon = wgLon + dLon
    return mgLat,mgLon
 
def outOfChina(lat, lon):
    if (lon < 72.004 or lon > 137.8347):
        return True
    if (lat < 0.8293 or lat > 55.8271):
        return True
    return False
 
def transformLat(x, y):
    ret = -100.0 + 2.0 * x + 3.0 * y + 0.2 * y * y + 0.1 * x * y + 0.2 * sqrt(abs(x))
    ret += (20.0 * sin(6.0 * x * pi) + 20.0 * sin(2.0 * x * pi)) * 2.0 / 3.0
    ret += (20.0 * sin(y * pi) + 40.0 * sin(y / 3.0 * pi)) * 2.0 / 3.0
    ret += (160.0 * sin(y / 12.0 * pi) + 320 * sin(y * pi / 30.0)) * 2.0 / 3.0
    return ret
 
def transformLon(x, y):
    ret = 300.0 + x + 2.0 * y + 0.1 * x * x + 0.1 * x * y + 0.1 * sqrt(abs(x))
    ret += (20.0 * sin(6.0 * x * pi) + 20.0 * sin(2.0 * x * pi)) * 2.0 / 3.0
    ret += (20.0 * sin(x * pi) + 40.0 * sin(x / 3.0 * pi)) * 2.0 / 3.0
    ret += (150.0 * sin(x / 12.0 * pi) + 300.0 * sin(x / 30.0 * pi)) * 2.0 / 3.0
    return ret