Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Apache License 

public class Main {
    private static double getDistanceFromXtoY(double lat_a, double lng_a, double lat_b, double lng_b) {
        double pk = 180 / 3.14169;
        double a1 = lat_a / pk;
        double a2 = lng_a / pk;
        double b1 = lat_b / pk;
        double b2 = lng_b / pk;
        double t1 = Math.cos(a1) * Math.cos(a2) * Math.cos(b1) * Math.cos(b2);
        double t2 = Math.cos(a1) * Math.sin(a2) * Math.cos(b1) * Math.sin(b2);
        double t3 = Math.sin(a1) * Math.sin(b1);
        double tt = Math.acos(t1 + t2 + t3);
        return 6366000 * tt;
    }
}