forked from MapComplete/MapComplete
47 lines
No EOL
1.9 KiB
TypeScript
47 lines
No EOL
1.9 KiB
TypeScript
import TileHierarchy from "./TileHierarchy";
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import {UIEventSource} from "../../UIEventSource";
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import FeatureSource, {FeatureSourceForLayer, IndexedFeatureSource, Tiled} from "../FeatureSource";
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import FilteredLayer from "../../../Models/FilteredLayer";
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import {Utils} from "../../../Utils";
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import {BBox} from "../../GeoOperations";
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import FeatureSourceMerger from "../Sources/FeatureSourceMerger";
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import {Tiles} from "../../../Models/TileRange";
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export class TileHierarchyMerger implements TileHierarchy<FeatureSourceForLayer & Tiled> {
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public readonly loadedTiles: Map<number, FeatureSourceForLayer & Tiled> = new Map<number, FeatureSourceForLayer & Tiled>();
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private readonly sources: Map<number, UIEventSource<FeatureSource[]>> = new Map<number, UIEventSource<FeatureSource[]>>();
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public readonly layer: FilteredLayer;
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private _handleTile: (src: FeatureSourceForLayer & IndexedFeatureSource, index: number) => void;
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constructor(layer: FilteredLayer, handleTile: (src: FeatureSourceForLayer & IndexedFeatureSource & Tiled, index: number) => void) {
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this.layer = layer;
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this._handleTile = handleTile;
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}
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/**
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* Add another feature source for the given tile.
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* Entries for this tile will be merged
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* @param src
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* @param index
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*/
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public registerTile(src: FeatureSource & Tiled) {
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const index = src.tileIndex
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if (this.sources.has(index)) {
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const sources = this.sources.get(index)
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sources.data.push(src)
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sources.ping()
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return;
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}
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// We have to setup
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const sources = new UIEventSource<FeatureSource[]>([src])
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this.sources.set(index, sources)
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const merger = new FeatureSourceMerger(this.layer, index, BBox.fromTile(...Tiles.tile_from_index(index)), sources)
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this.loadedTiles.set(index, merger)
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this._handleTile(merger, index)
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}
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} |