kepler.gl/dist/layers/grid-layer/grid-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.pointToPolygonGeo = pointToPolygonGeo;

var _deck = require('deck.gl');

/**
 * top left of the grid to a square polygon for the hover layer
 * and current latitude
 * @param {object} object
 * @param {number} cellSize
 * @param {number} coverage
 * @param {object} properties
 * @param {object} mapState
 * @returns {object} - geojson feature
 */

// TODO: TEST
function pointToPolygonGeo(_ref) {
  var object = _ref.object,
      cellSize = _ref.cellSize,
      coverage = _ref.coverage,
      properties = _ref.properties,
      mapState = _ref.mapState;
  var position = object.position;

  var viewport = new _deck.WebMercatorViewport(mapState);

  if (!position) {
    return null;
  }

  return {
    geometry: {
      coordinates: [viewport.addMetersToLngLat(position, [cellSize * (0.5 - coverage / 2), cellSize * (0.5 - coverage / 2)]), viewport.addMetersToLngLat(position, [cellSize * (0.5 + coverage / 2), cellSize * (0.5 - coverage / 2)]), viewport.addMetersToLngLat(position, [cellSize * (0.5 + coverage / 2), cellSize * (0.5 + coverage / 2)]), viewport.addMetersToLngLat(position, [cellSize * (0.5 - coverage / 2), cellSize * (0.5 + coverage / 2)]), viewport.addMetersToLngLat(position, [cellSize * (0.5 - coverage / 2), cellSize * (0.5 - coverage / 2)])],
      type: 'LineString'
    },
    properties: properties
  };
} // Copyright (c) 2018 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.
//# 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