package com.doumee.core.utils; import com.alibaba.fastjson.JSONObject; import com.alibaba.fastjson.TypeReference; import com.doumee.dao.business.web.request.LocaltionDTO; import java.awt.geom.GeneralPath; import java.awt.geom.Point2D; import java.util.ArrayList; import java.util.List; /** * 计算距离 */ public class PositionUtil { public static String getTxMapAddrByLatAndLng(Double lat,Double lng,String host,String mapkey){ try { if(lat == null || lng ==null){ return null; } String url =host +"/ws/geocoder/v1/?key="+mapkey+"&location="+lat+","+lng; String res = HttpsUtil.get(url,false); JSONObject jsonObject = JSONObject.parseObject(res ); String r = null; if(jsonObject.getJSONObject("result")!=null){ if(jsonObject.getJSONObject("result").getJSONObject("formatted_addresses")!=null){ r =jsonObject.getJSONObject("result").getJSONObject("formatted_addresses").getString("formatted_addresses"); } if(r!=null && !r.equals("")){ r =jsonObject.getJSONObject("result").getString("address"); } } return r; }catch (Exception e){ e.printStackTrace(); } return null; } /** * 椭球参数 */ private static double pi = 3.14159265358979324; /** * 卫星椭球坐标投影到平面地图坐标系的投影因子 */ private static double a = 6378245.0; /** * 椭球的偏心率 */ private static double ee = 0.00669342162296594323; /** * 经纬度 GPS转高德 * * @param wgLon GPS经度 * @param wgLat GPS维度 * @return 转化后的经纬度坐标 */ public static AMap transform(double wgLon, double wgLat) { if (outOfChina(wgLat, wgLon)) { return new AMap(wgLon, wgLat); } double dLat = transformLat(wgLon - 105.0, wgLat - 35.0); double dLon = transformLon(wgLon - 105.0, wgLat - 35.0); double radLat = wgLat / 180.0 * pi; double magic = Math.sin(radLat); magic = 1 - ee * magic * magic; double sqrtMagic = Math.sqrt(magic); dLat = (dLat * 180.0) / ((a * (1 - ee)) / (magic * sqrtMagic) * pi); dLon = (dLon * 180.0) / (a / sqrtMagic * Math.cos(radLat) * pi); double transLat = wgLat + dLat; double transLon = wgLon + dLon; return new AMap(transLon, transLat); } /** * 判断是否为国外坐标，，不在国内不做偏移 * * @param lat * @param lon * @return */ private static Boolean outOfChina(double lat, double lon) { if (lon < 72.004 || lon > 137.8347) return true; if (lat < 0.8293 || lat > 55.8271) return true; return false; } /** * 纬度转换 * * @param x * @param y * @return */ private static double transformLat(double x, double y) { 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)); ret += (20.0 * Math.sin(6.0 * x * pi) + 20.0 * Math.sin(2.0 * x * pi)) * 2.0 / 3.0; ret += (20.0 * Math.sin(y * pi) + 40.0 * Math.sin(y / 3.0 * pi)) * 2.0 / 3.0; ret += (160.0 * Math.sin(y / 12.0 * pi) + 320 * Math.sin(y * pi / 30.0)) * 2.0 / 3.0; return ret; } /** * 经度转换 * * @param x * @param y * @return */ private static double transformLon(double x, double y) { double ret = 300.0 + x + 2.0 * y + 0.1 * x * x + 0.1 * x * y + 0.1 * Math.sqrt(Math.abs(x)); ret += (20.0 * Math.sin(6.0 * x * pi) + 20.0 * Math.sin(2.0 * x * pi)) * 2.0 / 3.0; ret += (20.0 * Math.sin(x * pi) + 40.0 * Math.sin(x / 3.0 * pi)) * 2.0 / 3.0; ret += (150.0 * Math.sin(x / 12.0 * pi) + 300.0 * Math.sin(x / 30.0 * pi)) * 2.0 / 3.0; return ret; } /** * 高德经纬度类 */ public static class AMap { /** * 经度 */ private double longitude; /** * 维度 */ private double latitude; public AMap(double longitude, double latitude) { this.longitude = longitude; this.latitude = latitude; } public double getLongitude() { return longitude; } public double getLatitude() { return latitude; } } public static void main(String[] args) { String str ="[{\"lat\": 31.71383446224521, \"lng\": 117.39342857107226, \"height\": 0}, " + "{\"lat\": 31.71393087373135, \"lng\": 117.39402357524818, \"height\": 0}, " + "{\"lat\": 31.713593433089077, \"lng\": 117.39433170240886, \"height\": 0}," + " {\"lat\": 31.713280450806966, \"lng\": 117.39358710879355, \"height\": 0}]"; TypeReference typeReference = new TypeReference>(){}; List array = JSONObject.parseObject(str, typeReference.getType()); if(array == null || array.size() ==0){ System.out.println("================="); } System.out.println(isInPolygon( 117.393962,31.713690,array)); AMap aMap = transform( 117.38823300, 31.71550000); System.out.println(aMap.getLatitude()+""+aMap.getLongitude()); System.out.println(isInPolygon( aMap.getLongitude(),aMap.getLatitude(),array)); } /* "latitude": 31.71553300, "longitude": 117.39, 117.393962,31.713690 31.71550000 117.38823300 */ /** * 判断坐标点是否在多边形区域内 * * @param pointLon 要判断的点的经度 * @param pointLat 要判断的点的纬度 * @return true：范围内; false：范围外 */ public static boolean isInPolygon(double pointLon, double pointLat, List list) { if(list==null ||list.size()==0){ return false; } double[] lon = new double[list.size()]; double[] lat = new double[list.size()]; for (int i = 0; i < list.size(); i++) { lon[i] = list.get(i).getLng() ==null?0:list.get(i).getLng(); lat[i] = list.get(i).getLat() ==null?0:list.get(i).getLat(); } // 将要判断的横纵坐标组成一个点 Point2D.Double point = new Point2D.Double(pointLon, pointLat); // 将区域各顶点的横纵坐标放到一个点集合里面 List pointList = new ArrayList<>(); double polygonPointToX; double polygonPointToY; for (int i = 0; i < lon.length; i++) { polygonPointToX = lon[i]; polygonPointToY = lat[i]; Point2D.Double polygonPoint = new Point2D.Double(polygonPointToX, polygonPointToY); pointList.add(polygonPoint); } return check(point, pointList); } /** * 坐标点是否在多边形内 * * @param point 要判断的点的横纵坐标 * @param polygon 组成的顶点坐标集合 */ private static boolean check(Point2D.Double point, List polygon) { GeneralPath generalPath = new GeneralPath(); Point2D.Double first = polygon.get(0); // 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 generalPath.moveTo(first.x, first.y); polygon.remove(0); for (Point2D.Double d : polygon) { // 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。 generalPath.lineTo(d.x, d.y); } // 将几何多边形封闭 generalPath.lineTo(first.x, first.y); generalPath.closePath(); // 测试指定的 Point2D 是否在 Shape 的边界内。 return generalPath.contains(point); } }