s2-geometry.js/tests/exhaustive.js

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2016-08-03 06:33:20 +00:00
'use strict';
var jS2 = require('../src/s2geometry.js').S2;
var nS2 = require('s2geometry-node');
var x, y;
function checkReal(lat, lng) {
var nS2LatLng = new nS2.S2LatLng(lat, lng).toPoint();
var nCell = new nS2.S2CellId(nS2LatLng).parent(15);
var jCell = jS2.S2Cell.FromLatLng({ lat: lat, lng: lng }, 15);
var nKey = nCell.toString();
var jQuad = jCell.getFaceAndQuads();
var jKey = jQuad[0] + '/' + jQuad[1].join('');
if (nKey !== jKey) {
console.log('');
console.log('Quadkey');
console.log('=', nKey);
console.log('j', jKey);
throw new Error("values didn't match expected");
}
}
console.log('Exhaustive check of about 518,400 random lat,lng coordinates of the earth (about every 0.5°)');
console.log('(this will take several seconds)');
for (x = -180; x <= 180; x += (0 + Math.random())) {
for (y = -180; y <= 180; y += (0 + Math.random())) {
checkReal(x, y);
}
}
console.log('PASS');