package com.doumee.core.utils;
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import com.alibaba.fastjson.JSONObject;
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import com.alibaba.fastjson.TypeReference;
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import com.doumee.dao.business.web.request.LocaltionDTO;
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import java.awt.geom.GeneralPath;
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import java.awt.geom.Point2D;
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import java.util.ArrayList;
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import java.util.List;
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/**
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* 计算距离
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*/
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public class PositionUtil {
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public static String getTxMapAddrByLatAndLng(Double lat,Double lng,String host,String mapkey){
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try {
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if(lat == null || lng ==null){
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return null;
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}
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String url =host +"/ws/geocoder/v1/?key="+mapkey+"&location="+lat+","+lng;
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String res = HttpsUtil.get(url,false);
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JSONObject jsonObject = JSONObject.parseObject(res );
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String r = null;
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if(jsonObject.getJSONObject("result")!=null){
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if(jsonObject.getJSONObject("result").getJSONObject("formatted_addresses")!=null){
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r =jsonObject.getJSONObject("result").getJSONObject("formatted_addresses").getString("formatted_addresses");
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}
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if(r!=null && !r.equals("")){
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r =jsonObject.getJSONObject("result").getString("address");
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}
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}
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return r;
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}catch (Exception e){
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e.printStackTrace();
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}
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return null;
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}
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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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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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* 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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String str ="[{\"lat\":31.732726766273103,\"lng\":117.37721605116087,\"height\":0},{\"lat\":31.72079687406289,\"lng\":117.39831914258241,\"height\":0},{\"lat\":31.714484720597493,\"lng\":117.39831914258241,\"height\":0},{\"lat\":31.71233192243245,\"lng\":117.39583137996954,\"height\":0},{\"lat\":31.71401037878662,\"lng\":117.3785457182995,\"height\":0}]";
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TypeReference typeReference = new TypeReference<List<LocaltionDTO>>(){};
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List<LocaltionDTO> array = JSONObject.parseObject(str, typeReference.getType());
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if(array == null || array.size() ==0){
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System.out.println("=================");
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}
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System.out.println(isInPolygon( 117.39387876,31.71365546,array));
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// AMap aMap = transform( 117.38823300, 31.71550000);
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// System.out.println(aMap.getLatitude()+""+aMap.getLongitude());
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// System.out.println(isInPolygon( aMap.getLongitude(),aMap.getLatitude(),array));
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}
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/* "latitude": 31.71553300,
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"longitude": 117.39,
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117.393962,31.713690
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31.71550000 117.38823300
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*/ /**
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* 判断坐标点是否在多边形区域内
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*
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* @param pointLon 要判断的点的经度
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* @param pointLat 要判断的点的纬度
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* @return true：范围内; false：范围外
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*/
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public static boolean isInPolygon(double pointLon, double pointLat, List<LocaltionDTO> list) {
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if(list==null ||list.size()==0){
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return false;
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}
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double[] lon = new double[list.size()];
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double[] lat = new double[list.size()];
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for (int i = 0; i < list.size(); i++) {
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lon[i] = list.get(i).getLng() ==null?0:list.get(i).getLng();
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lat[i] = list.get(i).getLat() ==null?0:list.get(i).getLat();
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}
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// 将要判断的横纵坐标组成一个点
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Point2D.Double point = new Point2D.Double(pointLon, pointLat);
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// 将区域各顶点的横纵坐标放到一个点集合里面
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List<Point2D.Double> pointList = new ArrayList<>();
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double polygonPointToX;
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double polygonPointToY;
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for (int i = 0; i < lon.length; i++) {
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polygonPointToX = lon[i];
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polygonPointToY = lat[i];
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Point2D.Double polygonPoint = new Point2D.Double(polygonPointToX, polygonPointToY);
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pointList.add(polygonPoint);
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}
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return check(point, pointList);
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}
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/**
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* 坐标点是否在多边形内
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*
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* @param point 要判断的点的横纵坐标
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* @param polygon 组成的顶点坐标集合
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*/
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private static boolean check(Point2D.Double point, List<Point2D.Double> polygon) {
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GeneralPath generalPath = new GeneralPath();
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Point2D.Double first = polygon.get(0);
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// 通过移动到指定坐标（以双精度指定），将一个点添加到路径中
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generalPath.moveTo(first.x, first.y);
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polygon.remove(0);
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for (Point2D.Double d : polygon) {
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// 通过绘制一条从当前坐标到新指定坐标（以双精度指定）的直线，将一个点添加到路径中。
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generalPath.lineTo(d.x, d.y);
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}
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// 将几何多边形封闭
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generalPath.lineTo(first.x, first.y);
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generalPath.closePath();
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// 测试指定的 Point2D 是否在 Shape 的边界内。
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return generalPath.contains(point);
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}
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}
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