forked from MapComplete/MapComplete
121 lines
No EOL
4.5 KiB
TypeScript
121 lines
No EOL
4.5 KiB
TypeScript
import LayoutConfig from "../../Models/ThemeConfig/LayoutConfig";
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import FeaturePipeline from "../FeatureSource/FeaturePipeline";
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import {Tiles} from "../../Models/TileRange";
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import ShowDataLayer from "../../UI/ShowDataLayer/ShowDataLayer";
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import {TileHierarchyAggregator} from "../../UI/ShowDataLayer/TileHierarchyAggregator";
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import ShowTileInfo from "../../UI/ShowDataLayer/ShowTileInfo";
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import {UIEventSource} from "../UIEventSource";
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import MapState from "./MapState";
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import SelectedFeatureHandler from "../Actors/SelectedFeatureHandler";
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import Hash from "../Web/Hash";
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export default class FeaturePipelineState extends MapState {
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/**
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* The piece of code which fetches data from various sources and shows it on the background map
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*/
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public readonly featurePipeline: FeaturePipeline;
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private readonly featureAggregator: TileHierarchyAggregator;
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constructor(layoutToUse: LayoutConfig) {
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super(layoutToUse);
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const clustering = layoutToUse.clustering
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this.featureAggregator = TileHierarchyAggregator.createHierarchy(this);
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const clusterCounter = this.featureAggregator
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const self = this;
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this.featurePipeline = new FeaturePipeline(
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source => {
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clusterCounter.addTile(source)
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// Do show features indicates if the 'showDataLayer' should be shown
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const doShowFeatures = source.features.map(
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f => {
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const z = self.locationControl.data.zoom
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if (!source.layer.isDisplayed.data) {
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return false;
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}
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const bounds = self.currentBounds.data
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if (bounds === undefined) {
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// Map is not yet displayed
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return false;
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}
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if (!source.bbox.overlapsWith(bounds)) {
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// Not within range -> features are hidden
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return false
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}
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if (z < source.layer.layerDef.minzoom) {
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// Layer is always hidden for this zoom level
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return false;
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}
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if (z > clustering.maxZoom) {
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return true
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}
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if (f.length > clustering.minNeededElements) {
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// This tile alone already has too much features
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return false
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}
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let [tileZ, tileX, tileY] = Tiles.tile_from_index(source.tileIndex);
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if (tileZ >= z) {
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while (tileZ > z) {
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tileZ--
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tileX = Math.floor(tileX / 2)
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tileY = Math.floor(tileY / 2)
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}
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if (clusterCounter.getTile(Tiles.tile_index(tileZ, tileX, tileY))?.totalValue > clustering.minNeededElements) {
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// To much elements
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return false
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}
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}
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return true
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}, [this.currentBounds, source.layer.isDisplayed]
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)
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new ShowDataLayer(
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{
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features: source,
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leafletMap: self.leafletMap,
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layerToShow: source.layer.layerDef,
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doShowLayer: doShowFeatures,
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allElements: self.allElements,
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selectedElement: self.selectedElement
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}
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);
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}, this
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);
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new SelectedFeatureHandler(Hash.hash, this)
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this.AddClusteringToMap(this.leafletMap)
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}
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/**
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* Adds the cluster-tiles to the given map
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* @param leafletMap: a UIEventSource possible having a leaflet map
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* @constructor
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*/
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public AddClusteringToMap(leafletMap: UIEventSource<any>) {
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const clustering = this.layoutToUse.clustering
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new ShowDataLayer({
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features: this.featureAggregator.getCountsForZoom(clustering, this.locationControl, clustering.minNeededElements),
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leafletMap: leafletMap,
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layerToShow: ShowTileInfo.styling,
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enablePopups: this.featureSwitchIsDebugging.data,
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})
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}
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} |