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+package com.mgtech.base_library.util;
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+
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+import com.mgtech.base_library.bean.GPS;
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+
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+/**
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+ * @ProjectName: BaseLibrary
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+ * @Package: com.mgtech.base_library.util
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+ * @ClassName: GPSConverterUtils
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+ * @Description: 坐标转换工具类
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+ * WGS84: Google Earth采用,Google Map中国范围外使用
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+ * GCJ02: 火星坐标系,中国国家测绘局制定的坐标系统,由WGS84机密后的坐标。Google Map中国和搜搜地图使用,高德
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+ * BD09:百度坐标,GCJ02机密后的坐标系
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+ * 搜狗坐标系,图吧坐标等,估计也是在GCJ02基础上加密而成的
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+ * @Author: niusongtao
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+ * @CreateDate: 2020/12/4 16:02
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+ * @UpdateUser: 更新者:niusongtao
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+ * @UpdateDate: 2020/12/4 16:02
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+ * @UpdateRemark: 更新说明:
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+ * @Version: 1.0
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+ */
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+public class GPSConverterUtils {
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+
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+ public static final String BAIDU_LBS_TYPE = "bd09ll";
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+ public static double pi = 3.1415926535897932384626;
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+ public static double a = 6378245.0;
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+ public static double ee = 0.00669342162296594323;
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+
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+ /**
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+ * 84 to 火星坐标系 (GCJ-02) World Geodetic System ==> Mars Geodetic System
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+ * @param lat
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+ * @param lon
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+ */
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+ public static GPS gps84_To_Gcj02(double lat, double lon) {
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+ if (outOfChina(lat, lon)) {
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+ return null;
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+ }
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+ double dLat = transformLat(lon - 105.0, lat - 35.0);
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+ double dLon = transformLon(lon - 105.0, lat - 35.0);
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+ double radLat = lat / 180.0 * pi;
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+ double magic = Math.sin(radLat);
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+ magic = 1 - ee * magic * magic;
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+ double sqrtMagic = Math.sqrt(magic);
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+ dLat = (dLat * 180.0) / ((a * (1 - ee)) / (magic * sqrtMagic) * pi);
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+ dLon = (dLon * 180.0) / (a / sqrtMagic * Math.cos(radLat) * pi);
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+ double mgLat = lat + dLat;
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+ double mgLon = lon + dLon;
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+ return new GPS(mgLat, mgLon);
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+ }
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+
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+ /**
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+ * * 火星坐标系 (GCJ-02) to 84 * * @param lon * @param lat * @return
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+ */
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+ public static GPS gcj_To_Gps84(double lat, double lon) {
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+ GPS gps = transform(lat, lon);
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+ double lontitude = lon * 2 - gps.getLon();
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+ double latitude = lat * 2 - gps.getLat();
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+ return new GPS(latitude, lontitude);
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+ }
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+
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+ /**
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+ * 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
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+ *
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+ * @param gg_lat
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+ * @param gg_lon
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+ */
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+ public static GPS gcj02_To_Bd09(double gg_lat, double gg_lon) {
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+ double x = gg_lon, y = gg_lat;
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+ double z = Math.sqrt(x * x + y * y) + 0.00002 * Math.sin(y * pi);
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+ double theta = Math.atan2(y, x) + 0.000003 * Math.cos(x * pi);
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+ double bd_lon = z * Math.cos(theta) + 0.0065;
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+ double bd_lat = z * Math.sin(theta) + 0.006;
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+ return new GPS(bd_lat, bd_lon);
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+ }
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+
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+ /**
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+ * * 火星坐标系 (GCJ-02) 与百度坐标系 (BD-09) 的转换算法 * * 将 BD-09 坐标转换成GCJ-02 坐标 * * @param
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+ * bd_lat * @param bd_lon * @return
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+ */
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+ public static GPS bd09_To_Gcj02(double bd_lat, double bd_lon) {
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+ double x = bd_lon - 0.0065, y = bd_lat - 0.006;
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+ double z = Math.sqrt(x * x + y * y) - 0.00002 * Math.sin(y * pi);
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+ double theta = Math.atan2(y, x) - 0.000003 * Math.cos(x * pi);
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+ double gg_lon = z * Math.cos(theta);
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+ double gg_lat = z * Math.sin(theta);
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+ return new GPS(gg_lat, gg_lon);
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+ }
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+
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+ /**
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+ * (BD-09)-->84
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+ * @param bd_lat
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+ * @param bd_lon
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+ * @return
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+ */
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+ public static GPS bd09_To_Gps84(double bd_lat, double bd_lon) {
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+
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+ GPS gcj02 = bd09_To_Gcj02(bd_lat, bd_lon);
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+ GPS map84 = gcj_To_Gps84(gcj02.getLat(),
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+ gcj02.getLon());
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+ return map84;
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+
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+ }
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+
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+ /**
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+ * is or not outOfChina
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+ * @param lat
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+ * @param lon
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+ * @return
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+ */
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+ public static boolean outOfChina(double lat, double lon) {
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+ if (lon < 72.004 || lon > 137.8347)
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+ return true;
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+ if (lat < 0.8293 || lat > 55.8271)
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+ return true;
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+ return false;
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+ }
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+
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+ public static GPS transform(double lat, double lon) {
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+ if (outOfChina(lat, lon)) {
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+ return new GPS(lat, lon);
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+ }
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+ double dLat = transformLat(lon - 105.0, lat - 35.0);
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+ double dLon = transformLon(lon - 105.0, lat - 35.0);
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+ double radLat = lat / 180.0 * pi;
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+ double magic = Math.sin(radLat);
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+ magic = 1 - ee * magic * magic;
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+ double sqrtMagic = Math.sqrt(magic);
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+ dLat = (dLat * 180.0) / ((a * (1 - ee)) / (magic * sqrtMagic) * pi);
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+ dLon = (dLon * 180.0) / (a / sqrtMagic * Math.cos(radLat) * pi);
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+ double mgLat = lat + dLat;
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+ double mgLon = lon + dLon;
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+ return new GPS(mgLat, mgLon);
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+ }
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+
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+ public static double transformLat(double x, double y) {
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+ double ret = -100.0 + 2.0 * x + 3.0 * y + 0.2 * y * y + 0.1 * x * y
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+ + 0.2 * Math.sqrt(Math.abs(x));
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+ ret += (20.0 * Math.sin(6.0 * x * pi) + 20.0 * Math.sin(2.0 * x * pi)) * 2.0 / 3.0;
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+ ret += (20.0 * Math.sin(y * pi) + 40.0 * Math.sin(y / 3.0 * pi)) * 2.0 / 3.0;
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+ ret += (160.0 * Math.sin(y / 12.0 * pi) + 320 * Math.sin(y * pi / 30.0)) * 2.0 / 3.0;
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+ return ret;
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+ }
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+
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+
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+ public static double transformLon(double x, double y) {
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+ double ret = 300.0 + x + 2.0 * y + 0.1 * x * x + 0.1 * x * y + 0.1
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+ * Math.sqrt(Math.abs(x));
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+ ret += (20.0 * Math.sin(6.0 * x * pi) + 20.0 * Math.sin(2.0 * x * pi)) * 2.0 / 3.0;
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+ ret += (20.0 * Math.sin(x * pi) + 40.0 * Math.sin(x / 3.0 * pi)) * 2.0 / 3.0;
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+ ret += (150.0 * Math.sin(x / 12.0 * pi) + 300.0 * Math.sin(x / 30.0
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+ * pi)) * 2.0 / 3.0;
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+ return ret;
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+ }
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+}
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