mapcomplete/Logic/FeatureSource/WayHandlingApplyingFeatureSource.ts

67 lines
No EOL
2.4 KiB
TypeScript

import FeatureSource from "./FeatureSource";
import {UIEventSource} from "../UIEventSource";
import LayerConfig from "../../Customizations/JSON/LayerConfig";
import {GeoOperations} from "../GeoOperations";
export default class WayHandlingApplyingFeatureSource implements FeatureSource {
features: UIEventSource<{ feature: any; freshness: Date }[]>;
constructor(layers: {
layerDef: LayerConfig
}[],
upstream: FeatureSource) {
const layerDict = {};
let allDefaultWayHandling = true;
for (const layer of layers) {
layerDict[layer.layerDef.id] = layer;
if (layer.layerDef.wayHandling !== LayerConfig.WAYHANDLING_DEFAULT) {
allDefaultWayHandling = false;
}
}
if (allDefaultWayHandling) {
this.features = upstream.features;
return;
}
this.features = upstream.features.map(
features => {
if(features === undefined){
return;
}
const newFeatures: { feature: any, freshness: Date }[] = [];
for (const f of features) {
const feat = f.feature;
const layerId = feat._matching_layer_id;
const layer: LayerConfig = layerDict[layerId].layerDef;
if (layer === undefined) {
throw "No layer found with id " + layerId;
}
if(layer.wayHandling === LayerConfig.WAYHANDLING_DEFAULT){
newFeatures.push(f);
continue;
}
if (feat.geometry.type === "Point") {
newFeatures.push(f);
// it is a point, nothing to do here
continue;
}
const centerPoint = GeoOperations.centerpoint(feat);
centerPoint._matching_layer_id = feat._matching_layer_id;
newFeatures.push({feature: centerPoint, freshness: f.freshness});
if(layer.wayHandling === LayerConfig.WAYHANDLING_CENTER_AND_WAY){
newFeatures.push(f);
}
}
return newFeatures;
}
);
}
}