69 lines
2.6 KiB
TypeScript
69 lines
2.6 KiB
TypeScript
import FeatureSource from "./FeatureSource";
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import {UIEventSource} from "../UIEventSource";
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import LayerConfig from "../../Customizations/JSON/LayerConfig";
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import {GeoOperations} from "../GeoOperations";
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/**
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* This is the part of the pipeline which introduces extra points at the center of an area (but only if this is demanded by the wayhandling)
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*/
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export default class WayHandlingApplyingFeatureSource implements FeatureSource {
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public readonly features: UIEventSource<{ feature: any; freshness: Date }[]>;
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public readonly name;
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constructor(layers: UIEventSource<{
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layerDef: LayerConfig
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}[]>,
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upstream: FeatureSource) {
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this.name = "Wayhandling of " + upstream.name;
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this.features = upstream.features.map(
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features => {
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if (features === undefined) {
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return;
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}
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const layerDict = {};
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let allDefaultWayHandling = true;
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for (const layer of layers.data) {
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layerDict[layer.layerDef.id] = layer;
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if (layer.layerDef.wayHandling !== LayerConfig.WAYHANDLING_DEFAULT) {
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allDefaultWayHandling = false;
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}
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}
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const newFeatures: { feature: any, freshness: Date }[] = [];
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for (const f of features) {
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const feat = f.feature;
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const layerId = feat._matching_layer_id;
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const layer: LayerConfig = layerDict[layerId].layerDef;
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if (layer === undefined) {
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throw "No layer found with id " + layerId;
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}
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if (layer.wayHandling === LayerConfig.WAYHANDLING_DEFAULT) {
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newFeatures.push(f);
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continue;
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}
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if (feat.geometry.type === "Point") {
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newFeatures.push(f);
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// it is a point, nothing to do here
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continue;
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}
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// Create the copy
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const centerPoint = GeoOperations.centerpoint(feat);
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centerPoint["_matching_layer_id"] = feat._matching_layer_id;
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newFeatures.push({feature: centerPoint, freshness: f.freshness});
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if (layer.wayHandling === LayerConfig.WAYHANDLING_CENTER_AND_WAY) {
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newFeatures.push(f);
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}
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}
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return newFeatures;
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}
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);
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}
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} |