kepler.gl/dist/layers/s2-geometry-layer/s2-utils.js

kepler.gl is a webgl based application to visualize large scale location data in the browser

"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.getS2Center = getS2Center;

var _long = _interopRequireDefault(require("long"));

var _s2Geometry = require("s2-geometry");

// Copyright (c) 2020 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
var MAXIMUM_TOKEN_LENGTH = 16;
/**
 * Retrieve S2 geometry center
 * @param s2Token string | number
 * @return {*[]}
 */

function getS2Center(s2Token) {
  var paddedToken = s2Token.toString().padEnd(MAXIMUM_TOKEN_LENGTH, '0');

  var s2Id = _long["default"].fromString(paddedToken, MAXIMUM_TOKEN_LENGTH);

  var _S2$idToLatLng = _s2Geometry.S2.idToLatLng(s2Id.toString()),
      lat = _S2$idToLatLng.lat,
      lng = _S2$idToLatLng.lng;

  return [lng, lat];
}
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