WGS84,GCJ02, BD09坐标转换
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- public class Gps {
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- private double wgLat;
- private double wgLon;
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- public Gps(double wgLat, double wgLon) {
- setWgLat(wgLat);
- setWgLon(wgLon);
- }
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- public double getWgLat() {
- return wgLat;
- }
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- public void setWgLat(double wgLat) {
- this.wgLat = wgLat;
- }
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- public double getWgLon() {
- return wgLon;
- }
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- public void setWgLon(double wgLon) {
- this.wgLon = wgLon;
- }
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- @Override
- public String toString() {
- return wgLat + "," + wgLon;
- }
- }
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- public class PositionUtil {
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- public static final String BAIDU_LBS_TYPE = "bd09ll";
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- public static double pi = 3.1415926535897932384626;
- public static double a = 6378245.0;
- public static double ee = 0.00669342162296594323;
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- public static Gps gps84_To_Gcj02(double lat, double lon) {
- if (outOfChina(lat, lon)) {
- return null;
- }
- double dLat = transformLat(lon - 105.0, lat - 35.0);
- double dLon = transformLon(lon - 105.0, lat - 35.0);
- double radLat = lat / 180.0 * pi;
- double magic = Math.sin(radLat);
- magic = 1 - ee * magic * magic;
- double sqrtMagic = Math.sqrt(magic);
- dLat = (dLat * 180.0) / ((a * (1 - ee)) / (magic * sqrtMagic) * pi);
- dLon = (dLon * 180.0) / (a / sqrtMagic * Math.cos(radLat) * pi);
- double mgLat = lat + dLat;
- double mgLon = lon + dLon;
- return new Gps(mgLat, mgLon);
- }
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- public static Gps gcj_To_Gps84(double lat, double lon) {
- Gps gps = transform(lat, lon);
- double lontitude = lon * 2 - gps.getWgLon();
- double latitude = lat * 2 - gps.getWgLat();
- return new Gps(latitude, lontitude);
- }
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- public static Gps gcj02_To_Bd09(double gg_lat, double gg_lon) {
- double x = gg_lon, y = gg_lat;
- double z = Math.sqrt(x * x + y * y) + 0.00002 * Math.sin(y * pi);
- double theta = Math.atan2(y, x) + 0.000003 * Math.cos(x * pi);
- double bd_lon = z * Math.cos(theta) + 0.0065;
- double bd_lat = z * Math.sin(theta) + 0.006;
- return new Gps(bd_lat, bd_lon);
- }
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- public static Gps bd09_To_Gcj02(double bd_lat, double bd_lon) {
- double x = bd_lon - 0.0065, y = bd_lat - 0.006;
- double z = Math.sqrt(x * x + y * y) - 0.00002 * Math.sin(y * pi);
- double theta = Math.atan2(y, x) - 0.000003 * Math.cos(x * pi);
- double gg_lon = z * Math.cos(theta);
- double gg_lat = z * Math.sin(theta);
- return new Gps(gg_lat, gg_lon);
- }
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- public static Gps bd09_To_Gps84(double bd_lat, double bd_lon) {
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- Gps gcj02 = PositionUtil.bd09_To_Gcj02(bd_lat, bd_lon);
- Gps map84 = PositionUtil.gcj_To_Gps84(gcj02.getWgLat(),
- gcj02.getWgLon());
- return map84;
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- }
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- public static boolean outOfChina(double lat, double lon) {
- if (lon < 72.004 || lon > 137.8347)
- return true;
- if (lat < 0.8293 || lat > 55.8271)
- return true;
- return false;
- }
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- public static Gps transform(double lat, double lon) {
- if (outOfChina(lat, lon)) {
- return new Gps(lat, lon);
- }
- double dLat = transformLat(lon - 105.0, lat - 35.0);
- double dLon = transformLon(lon - 105.0, lat - 35.0);
- double radLat = lat / 180.0 * pi;
- double magic = Math.sin(radLat);
- magic = 1 - ee * magic * magic;
- double sqrtMagic = Math.sqrt(magic);
- dLat = (dLat * 180.0) / ((a * (1 - ee)) / (magic * sqrtMagic) * pi);
- dLon = (dLon * 180.0) / (a / sqrtMagic * Math.cos(radLat) * pi);
- double mgLat = lat + dLat;
- double mgLon = lon + dLon;
- return new Gps(mgLat, mgLon);
- }
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- public 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) + 320 * Math.sin(y * pi / 30.0)) * 2.0 / 3.0;
- return ret;
- }
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- public 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;
- }
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- public static void main(String[] args) {
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- Gps gps = new Gps(31.426896, 119.496145);
- System.out.println("gps :" + gps);
- Gps gcj = gps84_To_Gcj02(gps.getWgLat(), gps.getWgLon());
- System.out.println("gcj :" + gcj);
- Gps star = gcj_To_Gps84(gcj.getWgLat(), gcj.getWgLon());
- System.out.println("star:" + star);
- Gps bd = gcj02_To_Bd09(gcj.getWgLat(), gcj.getWgLon());
- System.out.println("bd :" + bd);
- Gps gcj2 = bd09_To_Gcj02(bd.getWgLat(), bd.getWgLon());
- System.out.println("gcj :" + gcj2);
- }
- }