mirror of https://gitee.com/antv-l7/antv-l7
85 lines
3.2 KiB
JavaScript
85 lines
3.2 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.cluster = cluster;
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exports.formatData = formatData;
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var _supercluster = _interopRequireDefault(require("supercluster/dist/supercluster"));
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }
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function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }
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function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(source, true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(source).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }
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function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
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function cluster(data, option) {
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var _option$radius = option.radius,
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radius = _option$radius === void 0 ? 80 : _option$radius,
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_option$maxZoom = option.maxZoom,
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maxZoom = _option$maxZoom === void 0 ? 18 : _option$maxZoom,
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_option$minZoom = option.minZoom,
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minZoom = _option$minZoom === void 0 ? 0 : _option$minZoom,
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field = option.field,
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_option$zoom = option.zoom,
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zoom = _option$zoom === void 0 ? 2 : _option$zoom;
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if (data.pointIndex) {
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var _clusterPoint = data.pointIndex.getClusters(data.extent, zoom);
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data.dataArray = formatData(_clusterPoint);
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return data;
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}
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var pointIndex = new _supercluster["default"]({
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radius: radius,
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minZoom: minZoom,
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maxZoom: maxZoom,
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map: function map(props) {
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return {
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sum: props[field]
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};
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},
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reduce: function reduce(accumulated, props) {
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accumulated.sum += props.sum;
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}
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});
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var geojson = {
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type: 'FeatureCollection'
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};
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geojson.features = data.dataArray.map(function (item) {
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return {
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type: 'Feature',
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properties: _defineProperty({}, field, item[field]),
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geometry: {
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type: 'Point',
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coordinates: item.coordinates
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}
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};
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});
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pointIndex.load(geojson.features);
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var clusterPoint = pointIndex.getClusters(data.extent, zoom);
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var resultData = clusterPoint.map(function (point, index) {
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return _objectSpread({
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coordinates: point.geometry.coordinates,
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_id: index + 1
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}, point.properties);
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});
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data.dataArray = resultData;
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return {
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data: data,
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pointIndex: pointIndex
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};
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}
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function formatData(clusterPoint) {
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return clusterPoint.map(function (point, index) {
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return _objectSpread({
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coordinates: point.geometry.coordinates,
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_id: index + 1
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}, point.properties);
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});
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} |