package com.javaweb.geo.utils;
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import com.javaweb.common.utils.NumberUtils;
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import org.gavaghan.geodesy.Ellipsoid;
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import org.gavaghan.geodesy.GeodeticCalculator;
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import org.gavaghan.geodesy.GeodeticCurve;
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import org.gavaghan.geodesy.GlobalCoordinates;
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public class ExceptionDistanceUtils {
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public static double getDistanceMeter(GlobalCoordinates gpsFrom, GlobalCoordinates gpsTo, Ellipsoid ellipsoid)
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{
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//创建GeodeticCalculator，调用计算方法，传入坐标系、经纬度用于计算距离
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GeodeticCurve geoCurve = new GeodeticCalculator().calculateGeodeticCurve(ellipsoid, gpsFrom, gpsTo);
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return geoCurve.getEllipsoidalDistance();
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}
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/**
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* 计算距离
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* @param lng1
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* @param lat1
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* @param lng2
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* @param lat2
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* @return
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*/
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public static double distance(Double lng1,Double lat1 ,Double lng2 ,Double lat2){
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GlobalCoordinates source = new GlobalCoordinates(lat1, lng1);
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GlobalCoordinates target = new GlobalCoordinates(lat2, lng2);
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double meter2 = getDistanceMeter(source, target, Ellipsoid.WGS84);
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return NumberUtils.div(meter2,1,2);
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}
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public static void main(String[] args) {
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double distance = distance(116.510842,39.90777,116.510958,39.90786);
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System.out.println(distance);
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}
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}
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