Google Maps Baidu map GPS latitude and longitude shift conversion (JAVA)

Source: Internet
Author: User
Tags cos sin

not much to say, direct code, Java Edition

Mainly Google Maps, Baidu map, GPS latitude and longitude shift conversion

GCJ-02 conversion Bd-09,google Map latitude and longitude to Baidu map latitude and longitude
BD-09 conversion GCJ-02, Baidu to Google
WGS-84 to GCJ-02 conversion (i.e. GPS bias)

/** * used to construct coordinate points in the map * @author LW * **/public class Point { Private double lat;//latitude private double lng;//longitude public point () {}public point (double LNG, double lat) {this.lng = Lng;this . lat = lat;} @Overridepublic boolean equals (Object obj) {if (obj instanceof point) {point bmappoint = (point) Obj;return (bmappoint.get LNG () = = LNG && Bmappoint.getlat () = = LAT)? True:false;} else {return false;}} Public double Getlat () {return lat;} public void Setlat (double lat) {This.lat = lat;} Public double getlng () {return LNG;} public void setlng (double lng) {this.lng = LNG;} @Overridepublic String toString () {return "point [lat=" + Lat + ", lng=" + LNG + "]";}} 
/** * Map coordinates conversion GOOGLE,BAIDU,GPS * @author LW * @Time April 16, 2015 18:19:16 * * */public class Coordinateconversion {private St  Atic Final Double x_pi = 3.14159265358979324 * 3000.0/180.0;private static final double pi = 3.14159265358979324;private Static final Double A = 6378245.0;private static final Double ee = 0.00669342162296594323;/** * Gg_lat latitude * Gg_lon Longitude * G CJ-02 Conversion BD-09 * Google Maps latitude and longitude to Baidu map latitude and longitude * */public static point Google_bd_encrypt (double Gg_lat, double gg_lon) {point Point=ne W Point ();d ouble x = gg_lon, y = gg_lat;double z = math.sqrt (x * x + y * y) + 0.00002 * Math.sin (y * x_pi);d ouble theta = Math.atan2 (y, x) + 0.000003 * MATH.COS (x * x_pi); Double Bd_lon = z * Math.Cos (theta) + 0.0065;double Bd_lat = z * Math.sin (theta) + 0.006;point.setlat (Bd_lat);p oint.setlng (Bd_lon); return point;} /** * Wglat Latitude * Wglon Longitude * BD-09 conversion GCJ-02 * Baidu to Google * */public static point Bd_google_encrypt (double Bd_lat, double bd_l    On) {point point=new point (); Double x = bd_lon-0.0065, y = bd_lat-0.006;      Double z = math.sqrt (x * x + y * y)-0.00002 * Math.sin (y * x_pi);      Double Theta =math.atan2 (y, x)-0.000003 * MATH.COS (x * x_pi);      Double Gg_lon = z * Math.Cos (theta);      Double Gg_lat = z * Math.sin (theta);    Point.setlat (Gg_lat);    POINT.SETLNG (Gg_lon); return point;} /** * Wglat Latitude * Wglon longitude * WGS-84 to GCJ-02 conversion (i.e. GPS bias) * */public static point wgs_gcj_encrypts (double Wglat, double WG Lon) {point point=new Point (), if (Outofchina (Wglat, Wglon)) {Point.setlat (Wglat);p oint.setlng (Wglon); Double Dlat = Transformlat (wgLon-105.0, wgLat-35.0);d ouble Dlon = Transformlon (wgLon-105.0, wgLat-35.0);d ouble rad Lat = wglat/180.0 * Pi;double Magic = Math.sin (Radlat); magic = 1-ee * Magic * magic;double sqrtmagic = math.sqrt (Magic );d lat = (Dlat * 180.0)/((A * (1-ee))/(Magic * sqrtmagic) * pi);d lon = (Dlon * 180.0)/(A/sqrtmagic * Math.Cos (RA Dlat) * pi);d ouble lat = wglat + dlat;double lon = Wglon + dlon;point.setlat (LAT);p oint.setlng (lON), return point; public static void transform (double Wglat, double Wglon, double[] latlng) {if (Outofchina (Wglat, Wglon)) {Latlng[0] = Wgla T;LATLNG[1] = Wglon;return;} Double Dlat = Transformlat (wgLon-105.0, wgLat-35.0);d ouble Dlon = Transformlon (wgLon-105.0, wgLat-35.0);d ouble rad Lat = wglat/180.0 * Pi;double Magic = Math.sin (Radlat); magic = 1-ee * Magic * magic;double sqrtmagic = math.sqrt (Magic );d lat = (Dlat * 180.0)/((A * (1-ee))/(Magic * sqrtmagic) * pi);d lon = (Dlon * 180.0)/(A/sqrtmagic * Math.Cos (RA Dlat) * pi); latlng[0] = Wglat + dlat;latlng[1] = Wglon + Dlon;} private static Boolean Outofchina (double lat, double lon) {if (Lon < 72.004 | | lon > 137.8347) return true;if (Lat &l T 0.8293 | | Lat > 55.8271) return True;return false;} private static Double Transformlat (double x, double y) {double ret = -100.0 + 2.0 * x + 3.0 * y + 0.2 * y * y + 0.1 * x * Y + 0.2 * math.sqrt (Math.Abs (x)), ret + = (20.0 * Math.sin (6.0 * x * pi) + 20.0 * Math.sin (2.0 * x * pi)) * 2.0/3.0;ret + = (20.0 * Math.sin (y * pi) + 40.0 * Math.sin (y/3.0 * pi)) * 2.0/3.0;ret + = (160.0 * Math.sin (Y/12). 0 * pi) + Math.sin * (Y * pi/30.0)) * 2.0/3.0;return ret;}  private static Double Transformlon (double x, double y) {double ret = 300.0 + x + 2.0 * y + 0.1 * x * x + 0.1 * x * y + 0.1 * MATH.SQRT (Math.Abs (x)); ret + = (20.0 * Math.sin (6.0 * x * pi) + 20.0 * Math.sin (2.0 * x * pi)) * 2.0/3.0;ret + = (20.0 * Math.sin (x * pi) + 40.0 * Math.sin (x/3.0 * pi)) * 2.0/3.0;ret + = (150.0 * Math.sin (x/12.0 * pi) + 300.0 * Math.sin (x/30.0 * pi)) * 2.0/3.0;return ret;}}

Statement : The algorithm is not from himself, to collate the verification through


Google Maps Baidu map GPS latitude and longitude shift conversion (JAVA)

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