package com.zy.sc.common.utils;
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/**
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* Created by vincent on 2020-04-29
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*/
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public class GPSUtil {
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public static double pi = 3.1415926535897932384626;
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public static double x_pi = 3.14159265358979324 * 3000.0 / 180.0;
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public static double a = 6378245.0;
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public static double ee = 0.00669342162296594323;
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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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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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public static double[] transform(double lat, double lon) {
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if (outOfChina(lat, lon)) {
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return new double[]{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 double[]{mgLat,mgLon};
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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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* 84 to 火星坐标系 (GCJ-02) World Geodetic System ==> Mars Geodetic System
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*
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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 double[] gps84_To_Gcj02(double lat, double lon) {
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if (outOfChina(lat, lon)) {
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return new double[]{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 double[]{mgLat, mgLon};
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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 double[] gcj02_To_Gps84(double lat, double lon) {
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double[] gps = transform(lat, lon);
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double lontitude = lon * 2 - gps[1];
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double latitude = lat * 2 - gps[0];
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return new double[]{latitude, lontitude};
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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 lat
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* @param lon
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*/
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public static double[] gcj02_To_Bd09(double lat, double lon) {
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double x = lon, y = lat;
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double z = Math.sqrt(x * x + y * y) + 0.00002 * Math.sin(y * x_pi);
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double theta = Math.atan2(y, x) + 0.000003 * Math.cos(x * x_pi);
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double tempLon = z * Math.cos(theta) + 0.0065;
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double tempLat = z * Math.sin(theta) + 0.006;
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double[] gps = {tempLat,tempLon};
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return gps;
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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 double[] bd09_To_Gcj02(double lat, double lon) {
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double x = lon - 0.0065, y = lat - 0.006;
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double z = Math.sqrt(x * x + y * y) - 0.00002 * Math.sin(y * x_pi);
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double theta = Math.atan2(y, x) - 0.000003 * Math.cos(x * x_pi);
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double tempLon = z * Math.cos(theta);
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double tempLat = z * Math.sin(theta);
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double[] gps = {tempLat,tempLon};
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return gps;
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}
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/**将gps84转为bd09
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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 double[] gps84_To_bd09(double lat,double lon){
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double[] gcj02 = gps84_To_Gcj02(lat,lon);
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double[] bd09 = gcj02_To_Bd09(gcj02[0],gcj02[1]);
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return bd09;
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}
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public static double[] bd09_To_gps84(double lat,double lon){
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double[] gcj02 = bd09_To_Gcj02(lat, lon);
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double[] gps84 = gcj02_To_Gps84(gcj02[0], gcj02[1]);
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//保留小数点后六位
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gps84[0] = retain6(gps84[0]);
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gps84[1] = retain6(gps84[1]);
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return gps84;
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}
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/**保留小数点后六位
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* @param num
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* @return
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*/
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private static double retain6(double num){
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String result = String .format("%.6f", num);
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return Double.valueOf(result);
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}
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}
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