百度地图API返回的坐标和gps坐标不一样的，需要转换，百度api返回的坐标如下：
转换代码如下：
var Ob = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
function Pb(a) {
var b = "", c, d, e = "", f, g = "", i = 0;
f = /[^A-Za-z0-9\+\/\=]/g;
if (!a || f.exec(a))
return a;
a = a.replace(/[^A-Za-z0-9\+\/\=]/g, "");
do
c = Ob.indexOf(a.charAt(i++)),
d = Ob.indexOf(a.charAt(i++)),
f = Ob.indexOf(a.charAt(i++)),
g = Ob.indexOf(a.charAt(i++)),
c = c << 2 | d >> 4,
d = (d & 15) << 4 | f >> 2,
e = (f & 3) << 6 | g,
b += String.fromCharCode(c),
64 != f && (b += String.fromCharCode(d)),
64 != g && (b += String.fromCharCode(e));
while (i < a.length);
return b
}
function eb(a) {
return "string" == typeof a
}
function K(a, b) {
isNaN(a) && (a = Pb(a),
a = isNaN(a) ? 0 : a);
eb(a) && (a = parseFloat(a));
isNaN(b) && (b = Pb(b),
b = isNaN(b) ? 0 : b);
eb(b) && (b = parseFloat(b));
this.lng = a;
this.lat = b;
this.pf = "inner"
}
K.WE = function (a) {
return a && 180 >= a.lng && -180 <= a.lng && 74 >= a.lat && -74 <= a.lat
};
K.prototype.ab = function (a) {
return a && this.lat == a.lat && this.lng == a.lng
};
T = {
cQ: 6370996.81,
dH: [1.289059486E7, 8362377.87, 5591021, 3481989.83, 1678043.12, 0],
fv: [75, 60, 45, 30, 15, 0],
iQ: [[1.410526172116255E-8, 8.98305509648872E-6, -1.9939833816331, 200.9824383106796, -187.2403703815547, 91.6087516669843, -23.38765649603339, 2.57121317296198, -0.03801003308653, 1.73379812E7], [-7.435856389565537E-9, 8.983055097726239E-6, -0.78625201886289, 96.32687599759846, -1.85204757529826, -59.36935905485877, 47.40033549296737, -16.50741931063887, 2.28786674699375, 1.026014486E7], [-3.030883460898826E-8, 8.98305509983578E-6, 0.30071316287616, 59.74293618442277, 7.357984074871, -25.38371002664745, 13.45380521110908, -3.29883767235584, 0.32710905363475, 6856817.37], [-1.981981304930552E-8, 8.983055099779535E-6, 0.03278182852591, 40.31678527705744, 0.65659298677277, -4.44255534477492, 0.85341911805263, 0.12923347998204, -0.04625736007561, 4482777.06], [3.09191371068437E-9, 8.983055096812155E-6, 6.995724062E-5, 23.10934304144901, -2.3663490511E-4, -0.6321817810242, -0.00663494467273, 0.03430082397953, -0.00466043876332, 2555164.4], [2.890871144776878E-9, 8.983055095805407E-6, -3.068298E-8, 7.47137025468032, -3.53937994E-6, -0.02145144861037, -1.234426596E-5, 1.0322952773E-4, -3.23890364E-6, 826088.5]],
aH: [[-0.0015702102444, 111320.7020616939, 1704480524535203, -10338987376042340, 26112667856603880, -35149669176653700, 26595700718403920, -10725012454188240, 1800819912950474, 82.5], [8.277824516172526E-4, 111320.7020463578, 6.477955746671607E8, -4.082003173641316E9, 1.077490566351142E10, -1.517187553151559E10, 1.205306533862167E10, -5.124939663577472E9, 9.133119359512032E8, 67.5], [0.00337398766765, 111320.7020202162, 4481351.045890365, -2.339375119931662E7, 7.968221547186455E7, -1.159649932797253E8, 9.723671115602145E7, -4.366194633752821E7, 8477230.501135234, 52.5], [0.00220636496208, 111320.7020209128, 51751.86112841131, 3796837.749470245, 992013.7397791013, -1221952.21711287, 1340652.697009075, -620943.6990984312, 144416.9293806241, 37.5], [-3.441963504368392E-4, 111320.7020576856, 278.2353980772752, 2485758.690035394, 6070.750963243378, 54821.18345352118, 9540.606633304236, -2710.55326746645, 1405.483844121726, 22.5], [-3.218135878613132E-4, 111320.7020701615, 0.00369383431289, 823725.6402795718, 0.46104986909093, 2351.343141331292, 1.58060784298199, 8.77738589078284, 0.37238884252424, 7.45]],
t3: function (a, b) {
if (!a || !b)
return 0;
var c, d, a = this.ub(a);
if (!a)
return 0;
c = this.dl(a.lng);
d = this.dl(a.lat);
b = this.ub(b);
return !b ? 0 : this.Ue(c, this.dl(b.lng), d, this.dl(b.lat))
},
qp: function (a, b) {
if (!a || !b)
return 0;
a.lng = this.uE(a.lng, -180, 180);
a.lat = this.yE(a.lat, -74, 74);
b.lng = this.uE(b.lng, -180, 180);
b.lat = this.yE(b.lat, -74, 74);
return this.Ue(this.dl(a.lng), this.dl(b.lng), this.dl(a.lat), this.dl(b.lat))
},
ub: function (a) {
if (a === null || a === undefined)
return new K(0, 0);
var b, c;
b = new K(Math.abs(a.lng), Math.abs(a.lat));
for (var d = 0; d < this.dH.length; d++)
if (b.lat >= this.dH[d]) {
c = this.iQ[d];
break
}
a = this.aL(a, c);
return a = new K(a.lng.toFixed(6), a.lat.toFixed(6))
},
tb: function (a) {
if (a === p || a === k || 180 < a.lng || -180 > a.lng || 90 < a.lat || -90 > a.lat)
return new K(0, 0);
var b, c;
a.lng = this.uE(a.lng, -180, 180);
a.lat = this.yE(a.lat, -74, 74);
b = new K(a.lng, a.lat);
for (var d = 0; d < this.fv.length; d++)
if (b.lat >= this.fv[d]) {
c = this.aH[d];
break
}
if (!c)
for (d = 0; d < this.fv.length; d++)
if (b.lat <= -this.fv[d]) {
c = this.aH[d];
break
}
a = this.aL(a, c);
return a = new K(a.lng.toFixed(2), a.lat.toFixed(2))
},
aL: function (a, b) {
if (a && b) {
var c = b[0] + b[1] * Math.abs(a.lng)
, d = Math.abs(a.lat) / b[9]
,
d = b[2] + b[3] * d + b[4] * d * d + b[5] * d * d * d + b[6] * d * d * d * d + b[7] * d * d * d * d * d + b[8] * d * d * d * d * d * d
, c = c * (0 > a.lng ? -1 : 1)
, d = d * (0 > a.lat ? -1 : 1);
return new K(c, d)
}
},
Ue: function (a, b, c, d) {
return this.cQ * Math.acos(Math.sin(c) * Math.sin(d) + Math.cos(c) * Math.cos(d) * Math.cos(b - a))
},
dl: function (a) {
return Math.PI * a / 180
},
s5: function (a) {
return 180 * a / Math.PI
},
yE: function (a, b, c) {
b != p && (a = Math.max(a, b));
c != p && (a = Math.min(a, c));
return a
},
uE: function (a, b, c) {
for (; a > c;)
a -= c - b;
for (; a < b;)
a += c - b;
return a
}
}
function PointChange(lng, lat) {
let result = T.ub({
"lng": parseFloat(lng),
"lat": parseFloat(lat),
"pf": "inner"
})
return result.lng + "," + result.lat
}
console.log(PointChange("13538713.44", "3634631.93"))
