Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

public class Main {
    public static int[] getMapTileFromCoordinates(final double aLat, final double aLon, final int zoom) {
        final int[] out = new int[2];

        final double E2 = (double) aLat * Math.PI / 180;
        final long sradiusa = 6378137;
        final long sradiusb = 6356752;
        final double J2 = (double) Math.sqrt(sradiusa * sradiusa - sradiusb * sradiusb) / sradiusa;
        final double M2 = (double) Math.log((1 + Math.sin(E2)) / (1 - Math.sin(E2))) / 2
                - J2 * Math.log((1 + J2 * Math.sin(E2)) / (1 - J2 * Math.sin(E2))) / 2;
        final double B2 = (double) (1 << zoom);
        out[0] = (int) Math.floor(B2 / 2 - M2 * B2 / 2 / Math.PI);

        out[1] = (int) Math.floor((aLon + 180) / 360 * (1 << zoom));

        return out;
    }
}