Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

public class Main {
    public static int latitudeToPixelY(double latitude, double zoomLevel, int tileSize) {
        double sinLatitude = Math.sin(latitude * (Math.PI / 180));
        int mapSize = getMapSize(zoomLevel, tileSize);
        return (int) Math
                .round((0.5d - Math.log((1d + sinLatitude) / (1d - sinLatitude)) / (4d * Math.PI)) * mapSize);
    }

    public static int getMapSize(double zoomLevel, int tileSize) {
        return (int) Math.pow(2d, getZoomLevelAsInt(zoomLevel)) * getTileSize(zoomLevel, tileSize);
    }

    public static int getZoomLevelAsInt(double zoomLevel) {
        return (int) Math.round(zoomLevel);
    }

    public static int getTileSize(double zoomLevel, int tileSize) {
        double f = zoomLevel - Math.floor(zoomLevel);
        f = f < .5f ? f + 1f : .5f * (f + 1f);
        return (int) (tileSize * f);
    }
}