/**
* @author xiajf
* @Date 2019/6/17
* @Time 14:32
*/
public class GpsMapUtil {
/**
* 平均半径,单位：m
*/
private static final double EARTH_RADIUS = 6371393;
private static double pi = 3.1415926535897932384626;
public static double a = 6378245.0;
private static double ee = 0.00669342162296594323;
/**
* 通过A B点经纬度获取距离
*
* @param pointA A点(经，纬)
* @param pointB B点(经，纬)
* @return 距离(单位 ： 米)
*/
public static double getDistance(GPS pointA, GPS pointB) {
// 经纬度（角度）转弧度。弧度用作参数，以调用Math.cos和Math.sin
// A经弧度
double radiansAX = Math.toRadians(pointA.getLon());
// A纬弧度
double radiansAY = Math.toRadians(pointA.getLat());
// B经弧度
double radiansBX = Math.toRadians(pointB.getLon());
// B纬弧度
double radiansBY = Math.toRadians(pointB.getLat());
double cos = Math.cos(radiansAY) * Math.cos(radiansBY) * Math.cos(radiansAX - radiansBX)
+ Math.sin(radiansAY) * Math.sin(radiansBY);
return EARTH_RADIUS * Math.acos(cos);
}
/**
* 84 to 火星坐标系 (GCJ-02)
*
* @param lat 84坐标系纬度
* @param lon 84坐标系经度
* @return GPS 火星坐标系
*/
public static GPS gps84ToGcj02(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);
}
/**
* 火星坐标系 (GCJ-02) to 84
*
* @param lat 火星坐标系纬度
* @param lon 火星坐标系经度
* @return GPS 84坐标系
*/
public static GPS gcjToGps84(double lat, double lon) {
GPS gps = transform(lat, lon);
double longitude = lon * 2 - gps.getLon();
double latitude = lat * 2 - gps.getLat();
return new GPS(latitude, longitude);
}
/**
* 火星坐标系 (GCJ-02) to 百度坐标系 (BD-09)
*
* @param ggLat 火星坐标系纬度
* @param ggLon 火星坐标系经度
* @return GPS 百度坐标系
*/
public static GPS gcj02ToBd09(double ggLat, double ggLon) {
double z = Math.sqrt(ggLon * ggLon + ggLat * ggLat) + 0.00002 * Math.sin(ggLat * pi);
double theta = Math.atan2(ggLat, ggLon) + 0.000003 * Math.cos(ggLon * pi);
double bdLon = z * Math.cos(theta) + 0.0065;
double bdLat = z * Math.sin(theta) + 0.006;
return new GPS(bdLat, bdLon);
}
/**
* 百度坐标系 (BD-09) to 火星坐标系 (GCJ-02)
*
* @param bdLat 百度坐标系纬度
* @param bdLon 百度坐标系经度
* @return GPS 火星坐标系
*/
public static GPS bd09ToGcj02(double bdLat, double bdLon) {
double x = bdLon - 0.0065, y = bdLat - 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 ggLon = z * Math.cos(theta);
double ggLat = z * Math.sin(theta);
return new GPS(ggLat, ggLon);
}
/**
* 百度坐标系 (BD-09) to 84
*
* @param bdLat 百度坐标系纬度
* @param bdLon 百度坐标系经度
* @return GPS 84坐标系
*/
public static GPS bd09ToGps84(double bdLat, double bdLon) {
GPS gcj02 = bd09ToGcj02(bdLat, bdLon);
return gcjToGps84(gcj02.getLat(),
gcj02.getLon());
}
/**
* 84 to 百度坐标系 (BD-09)
*
* @param lat 84坐标系纬度
* @param lon 84坐标系经度
* @return GPS 百度坐标系
*/
public static GPS gps84ToBd09(double lat, double lon) {
GPS gcj02 = gps84ToGcj02(lat, lon);
return gcj02 == null ? null : gcj02ToBd09(gcj02.getLat(), gcj02.getLon());
}
/**
* 是否位于中国
*
* @param lat 纬度
* @param lon 经度
* @return if out of China then true
*/
public static boolean outOfChina(double lat, double lon) {
if (lon < 72.004 || lon > 137.8347) {
return true;
}
return lat < 0.8293 || lat > 55.8271;
}
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);
}
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;
}
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;
}
@Data
@AllArgsConstructor
@NoArgsConstructor
@Builder
@ToString
private static class GPS {
// 经度
private double lon;
// 纬度
private double lat;
}
}
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