forked from MapComplete/MapComplete
62 lines
2.5 KiB
TypeScript
62 lines
2.5 KiB
TypeScript
import FeatureSource, {FeatureSourceForLayer, Tiled} from "../FeatureSource";
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import {ImmutableStore, Store, UIEventSource} from "../../UIEventSource";
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import {stat} from "fs";
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import FilteredLayer from "../../../Models/FilteredLayer";
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import {BBox} from "../../BBox";
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import {Feature} from "@turf/turf";
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/**
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* A simple, read only feature store.
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*/
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export default class StaticFeatureSource implements FeatureSource {
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public readonly features: Store<{ feature: any; freshness: Date }[]>;
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public readonly name: string
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constructor(features: Store<{ feature: Feature, freshness: Date }[]>, name = "StaticFeatureSource") {
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if (features === undefined) {
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throw "Static feature source received undefined as source"
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}
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this.name = name;
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this.features = features;
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}
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public static fromGeojsonAndDate(features: { feature: Feature, freshness: Date }[], name = "StaticFeatureSourceFromGeojsonAndDate"): StaticFeatureSource {
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return new StaticFeatureSource(new ImmutableStore(features), name);
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}
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public static fromGeojson(geojson: Feature[], name = "StaticFeatureSourceFromGeojson"): StaticFeatureSource {
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const now = new Date();
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return StaticFeatureSource.fromGeojsonAndDate(geojson.map(feature => ({feature, freshness: now})), name);
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}
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public static fromGeojsonStore(geojson: Store<Feature[]>, name = "StaticFeatureSourceFromGeojson"): StaticFeatureSource {
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const now = new Date();
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const mapped : Store<{feature: Feature, freshness: Date}[]> = geojson.map(features => features.map(feature => ({feature, freshness: now})))
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return new StaticFeatureSource(mapped, name);
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}
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static fromDateless(featureSource: Store<{ feature: Feature }[]>, name = "StaticFeatureSourceFromDateless") {
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const now = new Date();
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return new StaticFeatureSource(featureSource.map(features => features.map(feature => ({
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feature: feature.feature,
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freshness: now
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}))), name);
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}
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}
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export class TiledStaticFeatureSource extends StaticFeatureSource implements Tiled, FeatureSourceForLayer{
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public readonly bbox: BBox = BBox.global;
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public readonly tileIndex: number;
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public readonly layer: FilteredLayer;
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constructor(features: Store<{ feature: any, freshness: Date }[]>, layer: FilteredLayer ,tileIndex : number = 0) {
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super(features);
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this.tileIndex = tileIndex ;
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this.layer= layer;
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this.bbox = BBox.fromTileIndex(this.tileIndex)
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}
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}
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