高德地图坐标与百度地图坐标相互转换

来自：https://blog.csdn.net/wang415229224ye/article/details/79207791  侵删


//百度坐标转高德（传入经度、纬度）
function bd_decrypt(bd_lng, bd_lat) {
    var x_pi = math.pi * 3000.0 / 180.0;
    var x = bd_lng - 0.0065;
    var y = bd_lat - 0.006;
    var z = math.sqrt(x * x + y * y) - 0.00002 * math.sin(y * x_pi);
    var theta = math.atan2(y, x) - 0.000003 * math.cos(x * x_pi);
    var gg_lng = z * math.cos(theta);
    var gg_lat = z * math.sin(theta);
    return {lng: gg_lng, lat: gg_lat}
}
//高德坐标转百度（传入经度、纬度）
function bd_encrypt(gg_lng, gg_lat) {
    var x_pi = math.pi * 3000.0 / 180.0;
    var x = gg_lng, y = gg_lat;
    var z = math.sqrt(x * x + y * y) + 0.00002 * math.sin(y * x_pi);
    var theta = math.atan2(y, x) + 0.000003 * math.cos(x * x_pi);
    var bd_lng = z * math.cos(theta) + 0.0065;
    var bd_lat = z * math.sin(theta) + 0.006;
    return {
        bd_lat: bd_lat,
        bd_lng: bd_lng
    };
}