osrm-backend/scripts/poly2req.js
2016-04-05 18:57:31 +02:00

62 lines
1.8 KiB
JavaScript
Executable File

#!/usr/bin/env node
'use strict';
let fs = require('fs');
let NUM_REQUEST = 1000;
let NUM_COORDS = 2;
let url_template = "http://127.0.0.1:5000/viaroute?{coords}&alt=false";
let coord_template = "loc={lat},{lon}";
let coords_separator = "&";
//let url_template = "http://127.0.0.1:5000/route/v1/driving/{coords}?steps=false&alternatives=false";
//let coord_template = "{lon},{lat}";
//let coords_separator = ";";
let monaco_poly_path = process.argv[2];
let poly_data = fs.readFileSync(monaco_poly_path, 'utf-8');
// lets assume there is only one ring
// cut of name and ring number and the two END statements
let coordinates = poly_data.split('\n')
.filter((l) => l != '')
.slice(2, -2).map((coord_line) => coord_line.split(' ')
.filter((elem) => elem != ''))
.map((coord) => [parseFloat(coord[0]), parseFloat(coord[1])]);
var sw = [Number.MAX_VALUE, Number.MAX_VALUE];
var ne = [Number.MIN_VALUE, Number.MIN_VALUE];
coordinates.forEach((c) => {
sw[0] = Math.min(sw[0], c[0]);
sw[1] = Math.min(sw[1], c[1]);
ne[0] = Math.max(ne[0], c[0]);
ne[1] = Math.max(ne[1], c[1]);
});
// Yes this an own seeded random number generator because its only a few lines
var seed = 0x1337;
function seededRandom(min, max) {
seed = (seed * 9301 + 49297) % 233280;
var rnd = seed / 233280;
return min + rnd * (max - min);
}
function getRandomCoordinate() {
let lon = seededRandom(sw[0], ne[0]);
let lat = seededRandom(sw[1], ne[1]);
return [lon, lat];
}
for (var i = 0; i < NUM_REQUEST; ++i)
{
var coords = [];
for (var j = 0; j < NUM_COORDS; ++j)
{
coords.push(getRandomCoordinate());
}
let coords_string = coords.map((c) => coord_template.replace("{lon}", c[0]).replace("{lat}", c[1])).join(coords_separator);
console.log(url_template.replace("{coords}", coords_string));
}