function Convertor(ak) {
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this.stepCount = 100;
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this.pointCount = [];
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this.Result = [];
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this.NoisIndex = [];
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this.Time = new Date();
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this.AK = ak;
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this.M_PI = 3.14159265358979324;
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this.A = 6378245.0;
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this.EE = 0.00669342162296594323;
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this.X_PI = this.M_PI * 3000.0 / 180.0;
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}
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Convertor.prototype.outofChine = function (p) {
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if (p.lng < 72.004 || p.lng > 137.8347) {
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return true;
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}
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if (p.lat < 0.8293 || p.lat > 55.8271) {
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return true;
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}
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return false;
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}
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;
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Convertor.prototype.WGS2GCJ_lat = function (x, y) {
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var ret1 = -100.0 + 2.0 * x + 3.0 * y + 0.2 * y * y + 0.1 * x * y + 0.2 * Math.sqrt(Math.abs(x));
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ret1 += (20.0 * Math.sin(6.0 * x * this.M_PI) + 20.0 * Math.sin(2.0 * x * this.M_PI)) * 2.0 / 3.0;
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ret1 += (20.0 * Math.sin(y * this.M_PI) + 40.0 * Math.sin(y / 3.0 * this.M_PI)) * 2.0 / 3.0;
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ret1 += (160.0 * Math.sin(y / 12.0 * this.M_PI) + 320 * Math.sin(y * this.M_PI / 30.0)) * 2.0 / 3.0;
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return ret1;
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}
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;
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Convertor.prototype.WGS2GCJ_lng = function (x, y) {
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var ret2 = 300.0 + x + 2.0 * y + 0.1 * x * x + 0.1 * x * y + 0.1 * Math.sqrt(Math.abs(x));
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ret2 += (20.0 * Math.sin(6.0 * x * this.M_PI) + 20.0 * Math.sin(2.0 * x * this.M_PI)) * 2.0 / 3.0;
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ret2 += (20.0 * Math.sin(x * this.M_PI) + 40.0 * Math.sin(x / 3.0 * this.M_PI)) * 2.0 / 3.0;
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ret2 += (150.0 * Math.sin(x / 12.0 * this.M_PI) + 300.0 * Math.sin(x / 30.0 * this.M_PI)) * 2.0 / 3.0;
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return ret2;
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}
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;
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Convertor.prototype.WGS2GCJ = function (poi) {
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if (this.outofChine(poi)) {
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return;
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}
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var poi2 = {};
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var dLat = this.WGS2GCJ_lat(poi.lng - 105.0, poi.lat - 35.0);
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var dLon = this.WGS2GCJ_lng(poi.lng - 105.0, poi.lat - 35.0);
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var radLat = poi.lat / 180.0 * this.M_PI;
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var magic = Math.sin(radLat);
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magic = 1 - this.EE * magic * magic;
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var sqrtMagic = Math.sqrt(magic);
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dLat = (dLat * 180.0) / ((this.A * (1 - this.EE)) / (magic * sqrtMagic) * this.M_PI);
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dLon = (dLon * 180.0) / (this.A / sqrtMagic * Math.cos(radLat) * this.M_PI);
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poi2.lat = poi.lat + dLat;
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poi2.lng = poi.lng + dLon;
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return poi2;
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}
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;
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Convertor.prototype.GCJ2BD09 = function (poi) {
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var poi2 = {};
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var x = poi.lng
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, y = poi.lat;
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var z = Math.sqrt(x * x + y * y) + 0.00002 * Math.sin(y * this.X_PI);
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var theta = Math.atan2(y, x) + 0.000003 * Math.cos(x * this.X_PI);
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poi2.lng = z * Math.cos(theta) + 0.0065;
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poi2.lat = z * Math.sin(theta) + 0.006;
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return poi2;
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}
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;
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/**
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* WGS->百度坐标系
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*/
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Convertor.prototype.WGS2BD09 = function (poi) {
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//WGS->GCJ
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var poi2 = this.WGS2GCJ(poi);
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// if (typeof poi2 === "undefined") {
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// return;
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// }
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//GCJ->百度坐标系
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return this.GCJ2BD09(poi2);
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}
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function zhuanhuan(aaa) {
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var c = new Convertor();
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var bbb = [];
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for (var i = 0; i < aaa.length; i++) {
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var rr = c.WGS2BD09({ lng: aaa[i].lng, lat: aaa[i].lat });
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bbb.push(rr);
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}
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return bbb;
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c = null;
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bbb = null;
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}
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