refactoring

Logic/FeatureSource/Actors/GeoIndexedStore.ts

@@ -0,0 +1,41 @@
+import FeatureSource, { FeatureSourceForLayer } from "../FeatureSource"
+import { Feature } from "geojson"
+import { BBox } from "../../BBox"
+import { GeoOperations } from "../../GeoOperations"
+import { Store } from "../../UIEventSource"
+import FilteredLayer from "../../../Models/FilteredLayer"
+
+/**
+ * Allows the retrieval of all features in the requested BBox; useful for one-shot queries;
+ *
+ * Use a ClippedFeatureSource for a continuously updating featuresource
+ */
+export default class GeoIndexedStore implements FeatureSource {
+    public features: Store<Feature[]>
+
+    constructor(features: FeatureSource | Store<Feature[]>) {
+        this.features = features["features"] ?? features
+    }
+
+    /**
+     * Gets the current features within the given bbox.
+     *
+     * @param bbox
+     * @constructor
+     */
+    public GetFeaturesWithin(bbox: BBox): Feature[] {
+        // TODO optimize
+        const bboxFeature = bbox.asGeoJson({})
+        return this.features.data.filter(
+            (f) => GeoOperations.intersect(f, bboxFeature) !== undefined
+        )
+    }
+}
+
+export class GeoIndexedStoreForLayer extends GeoIndexedStore implements FeatureSourceForLayer {
+    readonly layer: FilteredLayer
+    constructor(features: FeatureSource | Store<Feature[]>, layer: FilteredLayer) {
+        super(features)
+        this.layer = layer
+    }
+}