Eve-Project/app-node/node_modules/parse/lib/weapp/ParsePolygon.js

"use strict";

var _Object$defineProperty = require("@babel/runtime-corejs3/core-js-stable/object/define-property");
var _interopRequireDefault = require("@babel/runtime-corejs3/helpers/interopRequireDefault");
_Object$defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;
var _isArray = _interopRequireDefault(require("@babel/runtime-corejs3/core-js-stable/array/is-array"));
var _classCallCheck2 = _interopRequireDefault(require("@babel/runtime-corejs3/helpers/classCallCheck"));
var _createClass2 = _interopRequireDefault(require("@babel/runtime-corejs3/helpers/createClass"));
var _defineProperty2 = _interopRequireDefault(require("@babel/runtime-corejs3/helpers/defineProperty"));
var _ParseGeoPoint = _interopRequireDefault(require("./ParseGeoPoint"));
/**
 * @flow
 */
/**
 * Creates a new Polygon with any of the following forms:<br>
 *   <pre>
 *   new Polygon([[0,0],[0,1],[1,1],[1,0]])
 *   new Polygon([GeoPoint, GeoPoint, GeoPoint])
 *   </pre>
 *
 * <p>Represents a coordinates that may be associated
 * with a key in a ParseObject or used as a reference point for geo queries.
 * This allows proximity-based queries on the key.</p>
 *
 * <p>Example:<pre>
 *   var polygon = new Parse.Polygon([[0,0],[0,1],[1,1],[1,0]]);
 *   var object = new Parse.Object("PlaceObject");
 *   object.set("area", polygon);
 *   object.save();</pre></p>
 *
 * @alias Parse.Polygon
 */
var ParsePolygon = /*#__PURE__*/function () {
  /**
   * @param {(number[][] | Parse.GeoPoint[])} coordinates An Array of coordinate pairs
   */
  function ParsePolygon(coordinates /*: Array<Array<number>> | Array<ParseGeoPoint>*/) {
    (0, _classCallCheck2.default)(this, ParsePolygon);
    (0, _defineProperty2.default)(this, "_coordinates", void 0);
    this._coordinates = ParsePolygon._validate(coordinates);
  }

  /**
   * Coordinates value for this Polygon.
   * Throws an exception if not valid type.
   *
   * @property {(number[][] | Parse.GeoPoint[])} coordinates list of coordinates
   * @returns {number[][]}
   */
  (0, _createClass2.default)(ParsePolygon, [{
    key: "coordinates",
    get: function () /*: Array<Array<number>>*/{
      return this._coordinates;
    },
    set: function (coords /*: Array<Array<number>> | Array<ParseGeoPoint>*/) {
      this._coordinates = ParsePolygon._validate(coords);
    }

    /**
     * Returns a JSON representation of the Polygon, suitable for Parse.
     *
     * @returns {object}
     */
  }, {
    key: "toJSON",
    value: function () /*: { __type: string, coordinates: Array<Array<number>> }*/{
      ParsePolygon._validate(this._coordinates);
      return {
        __type: 'Polygon',
        coordinates: this._coordinates
      };
    }

    /**
     * Checks if two polygons are equal
     *
     * @param {(Parse.Polygon | object)} other
     * @returns {boolean}
     */
  }, {
    key: "equals",
    value: function (other /*: mixed*/) /*: boolean*/{
      if (!(other instanceof ParsePolygon) || this.coordinates.length !== other.coordinates.length) {
        return false;
      }
      var isEqual = true;
      for (var i = 1; i < this._coordinates.length; i += 1) {
        if (this._coordinates[i][0] != other.coordinates[i][0] || this._coordinates[i][1] != other.coordinates[i][1]) {
          isEqual = false;
          break;
        }
      }
      return isEqual;
    }

    /**
     *
     * @param {Parse.GeoPoint} point
     * @returns {boolean} Returns if the point is contained in the polygon
     */
  }, {
    key: "containsPoint",
    value: function (point /*: ParseGeoPoint*/) /*: boolean*/{
      var minX = this._coordinates[0][0];
      var maxX = this._coordinates[0][0];
      var minY = this._coordinates[0][1];
      var maxY = this._coordinates[0][1];
      for (var i = 1; i < this._coordinates.length; i += 1) {
        var p = this._coordinates[i];
        minX = Math.min(p[0], minX);
        maxX = Math.max(p[0], maxX);
        minY = Math.min(p[1], minY);
        maxY = Math.max(p[1], maxY);
      }
      var outside = point.latitude < minX || point.latitude > maxX || point.longitude < minY || point.longitude > maxY;
      if (outside) {
        return false;
      }
      var inside = false;
      for (var _i = 0, j = this._coordinates.length - 1; _i < this._coordinates.length; j = _i++) {
        var startX = this._coordinates[_i][0];
        var startY = this._coordinates[_i][1];
        var endX = this._coordinates[j][0];
        var endY = this._coordinates[j][1];
        var intersect = startY > point.longitude != endY > point.longitude && point.latitude < (endX - startX) * (point.longitude - startY) / (endY - startY) + startX;
        if (intersect) {
          inside = !inside;
        }
      }
      return inside;
    }

    /**
     * Validates that the list of coordinates can form a valid polygon
     *
     * @param {Array} coords the list of coordinates to validate as a polygon
     * @throws {TypeError}
     * @returns {number[][]} Array of coordinates if validated.
     */
  }], [{
    key: "_validate",
    value: function (coords /*: Array<Array<number>> | Array<ParseGeoPoint>*/) /*: Array<Array<number>>*/{
      if (!(0, _isArray.default)(coords)) {
        throw new TypeError('Coordinates must be an Array');
      }
      if (coords.length < 3) {
        throw new TypeError('Polygon must have at least 3 GeoPoints or Points');
      }
      var points = [];
      for (var i = 0; i < coords.length; i += 1) {
        var coord = coords[i];
        var geoPoint = void 0;
        if (coord instanceof _ParseGeoPoint.default) {
          geoPoint = coord;
        } else if ((0, _isArray.default)(coord) && coord.length === 2) {
          geoPoint = new _ParseGeoPoint.default(coord[0], coord[1]);
        } else {
          throw new TypeError('Coordinates must be an Array of GeoPoints or Points');
        }
        points.push([geoPoint.latitude, geoPoint.longitude]);
      }
      return points;
    }
  }]);
  return ParsePolygon;
}();
var _default = ParsePolygon;
exports.default = _default;