forked from MapComplete/MapComplete
61 lines
No EOL
2.2 KiB
TypeScript
61 lines
No EOL
2.2 KiB
TypeScript
/**
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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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import {UIEventSource} from "../../UIEventSource";
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import LayerConfig from "../../../Models/ThemeConfig/LayerConfig";
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import {GeoOperations} from "../../GeoOperations";
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import {FeatureSourceForLayer} from "../FeatureSource";
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export default class WayHandlingApplyingFeatureSource implements FeatureSourceForLayer {
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public readonly features: UIEventSource<{ feature: any; freshness: Date }[]>;
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public readonly name;
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public readonly layer;
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constructor(upstream: FeatureSourceForLayer) {
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this.name = "Wayhandling(" + upstream.name + ")";
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this.layer = upstream.layer
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const layer = upstream.layer.layerDef;
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if (layer.wayHandling === LayerConfig.WAYHANDLING_DEFAULT) {
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// We don't have to do anything fancy
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// lets just wire up the upstream
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this.features = upstream.features;
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return;
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}
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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 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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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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// feature 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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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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} |