mirror of
https://github.com/zerotier/ZeroTierOne.git
synced 2024-12-19 13:07:55 +00:00
26 lines
695 B
JavaScript
26 lines
695 B
JavaScript
|
'use strict'
|
||
|
|
|
||
|
|
/* This is a utility to convert latitude/longitude into X,Y,Z coordinates as used by clustering. */
|
||
|
|
|
||
|
|
if (process.argv.length !== 4) {
|
||
|
|
console.log('Usage: node lat_lon_to_xyz.js <latitude> <longitude');
|
||
|
|
process.exit(1);
|
||
|
|
}
|
||
|
|
|
||
|
|
var lat = parseFloat(process.argv[2])||0.0;
|
||
|
|
var lon = parseFloat(process.argv[3])||0.0;
|
||
|
|
|
||
|
|
var latRadians = lat * 0.01745329251994; // PI / 180
|
||
|
|
var lonRadians = lon * 0.01745329251994; // PI / 180
|
||
|
|
var cosLat = Math.cos(latRadians);
|
||
|
|
|
||
|
|
console.log({
|
||
|
|
lat: lat,
|
||
|
|
lon: lon,
|
||
|
|
x: Math.round((-6371.0) * cosLat * Math.cos(lonRadians)),
|
||
|
|
y: Math.round(6371.0 * Math.sin(latRadians)),
|
||
|
|
z: Math.round(6371.0 * cosLat * Math.sin(lonRadians))
|
||
|
|
});
|
||
|
|
|
||
|
|
process.exit(0);
|