wgs84坐标系拾取工具_各种地图坐标系转换工具
classGps {private doublewgLat;private doublewgLon;public Gps(double wgLat, doublewgLon) {
setWgLat(wgLat);
setWgLon(wgLon);
}public doublegetWgLat() {returnwgLat;
}public void setWgLat(doublewgLat) {this.wgLat =wgLat;
}public doublegetWgLon() {returnwgLon;
}public void setWgLon(doublewgLon) {this.wgLon =wgLon;
}
@OverridepublicString toString() {return wgLat + "," +wgLon;
}
}/*** 各种坐标系转换工具类
*@authorchenfangbo
*@returndouble
**/
public classPositionUtil {public static final String BAIDU_LBS_TYPE = "bd09ll";public static double pi = 3.1415926535897932384626 * 3000.0 / 180.0; //此处注意 pi = 派 * 3000 / 180 ;
public static double a = 6378245.0;public static double ee = 0.00669342162296594323;/*** 84 to 火星坐标系 (GCJ-02) World Geodetic System ==> Mars Geodetic System
* 地球转谷歌
*@paramlat
*@paramlon
*@return
*/
public static Gps gps84_To_Gcj02(double lat, doublelon) {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 newGps(mgLat, mgLon);
}/*** 火星坐标系 (GCJ-02) to 84 * *@paramlon *@paramlat *@return* 谷歌转地球
**/
public static Gps gcj_To_Gps84(double lat, doublelon) {
Gps gps=transform(lat, lon);double lontitude = lon * 2 -gps.getWgLon();double latitude = lat * 2 -gps.getWgLat();return newGps(latitude, lontitude);
}/*** 火星坐标系 (GCJ-02) 与百度坐标系 (BD-09) 的转换算法 将 GCJ-02 坐标转换成 BD-09 坐标
* 谷歌转百度
*@paramgg_lat
*@paramgg_lon*/
public static Gps gcj02_To_Bd09(double gg_lat, doublegg_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 newGps(bd_lat, bd_lon);
}/*** 百度坐标系 (BD-09) 与 火星坐标系 (GCJ-02) 的转换算法 * * 将 BD-09 坐标转换成GCJ-02 坐标 * *@param* 百度转谷歌*/
public static Gps bd09_To_Gcj02(double bd_lat, doublebd_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 newGps(gg_lat, gg_lon);
}/*** (BD-09)-->84
* 百度转地球
*@parambd_lat
*@parambd_lon
*@return
*/
public static Gps bd09_To_Gps84(double bd_lat, doublebd_lon) {
Gps gcj02=PositionUtil.bd09_To_Gcj02(bd_lat, bd_lon);
Gps map84=PositionUtil.gcj_To_Gps84(gcj02.getWgLat(),
gcj02.getWgLon());returnmap84;
}public static boolean outOfChina(double lat, doublelon) {if (lon < 72.004 || lon > 137.8347)return true;if (lat < 0.8293 || lat > 55.8271)return true;return false;
}public static Gps transform(double lat, doublelon) {if(outOfChina(lat, lon)) {return newGps(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 newGps(mgLat, mgLon);
}public static double transformLat(double x, doubley) {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;returnret;
}public static double transformLon(double x, doubley) {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;returnret;
}public static voidmain(String[] args) {//北斗芯片获取的经纬度为WGS84地理坐标 31.426896,119.496145
Gps gps = new Gps(30.6511, 103.681568);//System.out.println("gps :" + gps);
Gps gcj =gps84_To_Gcj02(gps.getWgLat(), gps.getWgLon());
System.out.println("地球转谷歌 :" +gcj);
Gps bd=gcj02_To_Bd09(gcj.getWgLat(), gcj.getWgLon());
System.out.println("谷歌转百度 :" +bd);
Gps gcj2=bd09_To_Gcj02(bd.getWgLat(), bd.getWgLon());
System.out.println("百度转谷歌 :" +gcj2);
Gps star=gcj_To_Gps84(gcj.getWgLat(), gcj.getWgLon());
System.out.println("谷歌转地球:" +star);
Gps gcj3=bd09_To_Gps84(gps.getWgLat(), gps.getWgLon());
System.out.println("百度转地球 :" +gcj3);
}
}