package com.moral.util;
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import java.math.BigDecimal;
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import java.math.RoundingMode;
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/**
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* @program: screen
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* @description: 经纬度距离计算工具类
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* @author: lizijie
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* @create: 2022-03-22 17:03
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**/
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public class LongitudeAndLatitudeUtils {
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private static final double EARTH_RADIUS = 6378.137;
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private static double rad(double d){
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return d * Math.PI / 180.0;
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}
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public static double getmeter(double long1, double lat1, double long2, double lat2) {
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double a, b, d, sa2, sb2;
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lat1 = rad(lat1);
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lat2 = rad(lat2);
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a = lat1 - lat2;
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b = rad(long1 - long2);
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sa2 = Math.sin(a / 2.0);
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sb2 = Math.sin(b / 2.0);
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d = 2 * EARTH_RADIUS
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* Math.asin(Math.sqrt(sa2 * sa2 + Math.cos(lat1)
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* Math.cos(lat2) * sb2 * sb2));
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d= d * 1000;
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BigDecimal bg = new BigDecimal(d).setScale(2, RoundingMode.UP);
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return bg.doubleValue();
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// return d;
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}
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public static String getStringmeter(double long1, double lat1, double long2, double lat2) {
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double a, b, d, sa2, sb2;
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lat1 = rad(lat1);
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lat2 = rad(lat2);
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a = lat1 - lat2;
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b = rad(long1 - long2);
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sa2 = Math.sin(a / 2.0);
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sb2 = Math.sin(b / 2.0);
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d = 2 * EARTH_RADIUS
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* Math.asin(Math.sqrt(sa2 * sa2 + Math.cos(lat1)
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* Math.cos(lat2) * sb2 * sb2));
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d= d * 1000;
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BigDecimal bg = new BigDecimal(d).setScale(2, RoundingMode.UP);
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return String.valueOf(bg.doubleValue());
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// return d;
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}
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}
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