package com.ld.igds.util;
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/**
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* 百度工具类
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*
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* @author: andy.jia
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* @description:
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* @version:
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* @data:2020年6月1日
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*
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*/
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public class BaiDuUtil {
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static double pi = 3.14159265358979324;
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static double a = 6378245.0;
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static double ee = 0.00669342162296594323;
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public final static double x_pi = 3.14159265358979324 * 3000.0 / 180.0;
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public static double[] wgs2bd(double lat, double lon) {
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double[] wgs2gcj = wgs2gcj(lat, lon);
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double[] gcj2bd = gcj2bd(wgs2gcj[0], wgs2gcj[1]);
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return gcj2bd;
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}
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public static double[] gcj2bd(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 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 double[] { bd_lat, bd_lon };
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}
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public static double[] bd2gcj(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 gg_lon = z * Math.cos(theta);
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double gg_lat = z * Math.sin(theta);
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return new double[] { gg_lat, gg_lon };
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}
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public static double[] wgs2gcj(double lat, double lon) {
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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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double[] loc = { mgLat, mgLon };
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return loc;
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}
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private static double transformLat(double lat, double lon) {
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double ret = -100.0 + 2.0 * lat + 3.0 * lon + 0.2 * lon * lon + 0.1
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* lat * lon + 0.2 * Math.sqrt(Math.abs(lat));
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ret += (20.0 * Math.sin(6.0 * lat * pi) + 20.0 * Math.sin(2.0 * lat
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* pi)) * 2.0 / 3.0;
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ret += (20.0 * Math.sin(lon * pi) + 40.0 * Math.sin(lon / 3.0 * pi)) * 2.0 / 3.0;
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ret += (160.0 * Math.sin(lon / 12.0 * pi) + 320 * Math.sin(lon * pi
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/ 30.0)) * 2.0 / 3.0;
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return ret;
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}
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private static double transformLon(double lat, double lon) {
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double ret = 300.0 + lat + 2.0 * lon + 0.1 * lat * lat + 0.1 * lat
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* lon + 0.1 * Math.sqrt(Math.abs(lat));
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ret += (20.0 * Math.sin(6.0 * lat * pi) + 20.0 * Math.sin(2.0 * lat
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* pi)) * 2.0 / 3.0;
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ret += (20.0 * Math.sin(lat * pi) + 40.0 * Math.sin(lat / 3.0 * pi)) * 2.0 / 3.0;
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ret += (150.0 * Math.sin(lat / 12.0 * pi) + 300.0 * Math.sin(lat / 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 void main(String[] args) {
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// GPS 转百度不坐标
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double lat = 119.5649;
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double lon = 29.1334;
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double attr[] = wgs2bd(lat, lon);
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System.out.println(attr[0]);
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System.out.println(attr[1]);
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}
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}
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