forked from MapComplete/MapComplete
58 lines
2 KiB
TypeScript
58 lines
2 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 FeatureSourceMerger from "../Sources/FeatureSourceMerger"
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import { Tiles } from "../../../Models/TileRange"
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import { BBox } from "../../BBox"
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export class TileHierarchyMerger implements TileHierarchy<FeatureSourceForLayer & Tiled> {
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public readonly loadedTiles: Map<number, FeatureSourceForLayer & Tiled> = new Map<
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number,
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FeatureSourceForLayer & Tiled
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>()
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public readonly layer: FilteredLayer
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private readonly sources: Map<number, UIEventSource<FeatureSource[]>> = new Map<
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number,
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UIEventSource<FeatureSource[]>
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>()
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private _handleTile: (src: FeatureSourceForLayer & IndexedFeatureSource, index: number) => void
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constructor(
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layer: FilteredLayer,
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handleTile: (
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src: FeatureSourceForLayer & IndexedFeatureSource & Tiled,
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index: number
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) => void
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) {
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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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*/
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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(
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this.layer,
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index,
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BBox.fromTile(...Tiles.tile_from_index(index)),
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sources
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)
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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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}
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