kepler.gl/dist/layers/h3-hexagon-layer/h3-utils.js

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

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.getVertices = getVertices;
exports.getCentroid = getCentroid;
exports.idToPolygonGeo = idToPolygonGeo;
Object.defineProperty(exports, "h3GetResolution", {
  enumerable: true,
  get: function get() {
    return _h3Js.h3GetResolution;
  }
});
Object.defineProperty(exports, "h3IsValid", {
  enumerable: true,
  get: function get() {
    return _h3Js.h3IsValid;
  }
});
exports.getHexFields = exports.isHexField = void 0;

var _h3Js = require("h3-js");

var _defaultSettings = require("../../constants/default-settings");

var _dataUtils = require("../../utils/data-utils");

// Copyright (c) 2021 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.
// get vertices should return [lon, lat]
function getVertices(_ref) {
  var id = _ref.id;
  // always reverse it
  return (0, _h3Js.h3ToGeoBoundary)(id, true);
} // get centroid should return [lon, lat]


function getCentroid(_ref2) {
  var id = _ref2.id;
  // always reverse it to [lng, lat]
  return (0, _h3Js.h3ToGeo)(id).reverse();
}

function idToPolygonGeo(object, properties) {
  if (!object || !object.id) {
    return null;
  }

  var vertices = getVertices(object);
  return {
    geometry: {
      coordinates: vertices,
      type: 'LineString'
    },
    properties: properties
  };
}

var isHexField = function isHexField(field, fieldIdx, dataContainer) {
  if (field.type !== _defaultSettings.ALL_FIELD_TYPES.string) {
    return false;
  }

  var firstDP = dataContainer.find(function (d) {
    return (0, _dataUtils.notNullorUndefined)(d.valueAt(fieldIdx));
  }, true);
  return firstDP && (0, _h3Js.h3IsValid)(firstDP.valueAt(fieldIdx));
};

exports.isHexField = isHexField;

var getHexFields = function getHexFields(fields, dataContainer) {
  return fields.filter(function (f, i) {
    return isHexField(f, i, dataContainer);
  });
};

exports.getHexFields = getHexFields;
//# 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aXJzdERQID0gZGF0YUNvbnRhaW5lci5maW5kKGQgPT4gbm90TnVsbG9yVW5kZWZpbmVkKGQudmFsdWVBdChmaWVsZElkeCkpLCB0cnVlKTtcbiAgcmV0dXJuIGZpcnN0RFAgJiYgaDNJc1ZhbGlkKGZpcnN0RFAudmFsdWVBdChmaWVsZElkeCkpO1xufTtcblxuZXhwb3J0IGNvbnN0IGdldEhleEZpZWxkcyA9IChmaWVsZHMsIGRhdGFDb250YWluZXIpID0+XG4gIGZpZWxkcy5maWx0ZXIoKGYsIGkpID0+IGlzSGV4RmllbGQoZiwgaSwgZGF0YUNvbnRhaW5lcikpO1xuIl19