137 lines
3.9 KiB
Plaintext
137 lines
3.9 KiB
Plaintext
package com.sercurityControl.proteam.util;
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/**
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* 经纬度 GPS转高德工具类
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*/
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public class GPSTransToAMapUtil {
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/**
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* 椭球参数
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*/
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private static double pi = 3.14159265358979324;
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/**
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* 卫星椭球坐标投影到平面地图坐标系的投影因子
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*/
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private static double a = 6378245.0;
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/**
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* 椭球的偏心率
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*/
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private static double ee = 0.00669342162296594323;
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/**
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* 经纬度 GPS转高德
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*
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* @param wgLon GPS经度
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* @param wgLat GPS维度
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* @return 转化后的经纬度坐标
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*/
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public static AMap transform(double wgLon, double wgLat) {
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if (outOfChina(wgLat, wgLon)) {
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return new AMap(wgLon, wgLat);
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}
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double dLat = transformLat(wgLon - 105.0, wgLat - 35.0);
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double dLon = transformLon(wgLon - 105.0, wgLat - 35.0);
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double radLat = wgLat / 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 transLat = wgLat + dLat;
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double transLon = wgLon + dLon;
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return new AMap(transLon, transLat);
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}
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/**
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* 判断是否为国外坐标，，不在国内不做偏移
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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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private static Boolean outOfChina(double lat, double lon) {
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double lon1=72.004;
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double lon2=137.8347;
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double lat1=0.8293;
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double lat2=55.8271;
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if (lon < lon1 || lon > lon2){
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return true;
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}
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return lat < lat1 || lat > lat2;
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}
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/**
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* 纬度转换
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*
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* @param x
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* @param y
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* @return
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*/
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private 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 + 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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* 经度转换
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*
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* @param x
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* @param y
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* @return
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*/
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private 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 * 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 * pi)) * 2.0 / 3.0;
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return ret;
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}
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/**
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* 高德经纬度类
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*/
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public static class AMap {
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/**
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* 经度
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*/
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private double longitude;
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/**
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* 维度
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*/
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private double latitude;
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public AMap(double longitude, double latitude) {
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this.longitude = longitude;
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this.latitude = latitude;
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}
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public double getLongitude() {
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return longitude;
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}
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public double getLatitude() {
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return latitude;
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}
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}
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public static void main(String[] args) {
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double lon = 108.766167;
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double lat = 34.207948;
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AMap aMap = transform(lon, lat);
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String[] msg= CoordinateConversion.wgs84togcj02(lon,lat);
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System.err.println(msg[0]);
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System.err.println(msg[1]);
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// 108.766167,34.207948
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System.out.println("GPS转高德之前：" + lon + "," + lat);
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// 108.77088779593853,34.206482360676944
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System.out.println("GPS转高德之后：" + aMap.getLongitude() + "," + aMap.getLatitude());
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}
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}
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