forked from MapComplete/MapComplete
93 lines
3.3 KiB
TypeScript
93 lines
3.3 KiB
TypeScript
import TileHierarchy from "./TileHierarchy";
|
|
import FeatureSource, {FeatureSourceForLayer, Tiled} from "../FeatureSource";
|
|
import {OsmNode, OsmObject, OsmWay} from "../../Osm/OsmObject";
|
|
import SimpleFeatureSource from "../Sources/SimpleFeatureSource";
|
|
import FilteredLayer from "../../../Models/FilteredLayer";
|
|
import {UIEventSource} from "../../UIEventSource";
|
|
|
|
|
|
export default class FullNodeDatabaseSource implements TileHierarchy<FeatureSource & Tiled> {
|
|
public readonly loadedTiles = new Map<number, FeatureSource & Tiled>()
|
|
private readonly onTileLoaded: (tile: (Tiled & FeatureSourceForLayer)) => void;
|
|
private readonly layer: FilteredLayer
|
|
private readonly nodeByIds = new Map<number, OsmNode>();
|
|
private readonly parentWays = new Map<number, UIEventSource<OsmWay[]>>()
|
|
|
|
constructor(
|
|
layer: FilteredLayer,
|
|
onTileLoaded: ((tile: Tiled & FeatureSourceForLayer) => void)) {
|
|
this.onTileLoaded = onTileLoaded
|
|
this.layer = layer;
|
|
if (this.layer === undefined) {
|
|
throw "Layer is undefined"
|
|
}
|
|
}
|
|
|
|
public handleOsmJson(osmJson: any, tileId: number) {
|
|
|
|
const allObjects = OsmObject.ParseObjects(osmJson.elements)
|
|
const nodesById = new Map<number, OsmNode>()
|
|
|
|
for (const osmObj of allObjects) {
|
|
if (osmObj.type !== "node") {
|
|
continue
|
|
}
|
|
const osmNode = <OsmNode>osmObj;
|
|
nodesById.set(osmNode.id, osmNode)
|
|
this.nodeByIds.set(osmNode.id, osmNode)
|
|
}
|
|
|
|
for (const osmObj of allObjects) {
|
|
if (osmObj.type !== "way") {
|
|
continue
|
|
}
|
|
const osmWay = <OsmWay>osmObj;
|
|
for (const nodeId of osmWay.nodes) {
|
|
|
|
if (!this.parentWays.has(nodeId)) {
|
|
const src = new UIEventSource<OsmWay[]>([])
|
|
this.parentWays.set(nodeId, src)
|
|
src.addCallback(parentWays => {
|
|
const tgs = nodesById.get(nodeId).tags
|
|
tgs ["parent_ways"] = JSON.stringify(parentWays.map(w => w.tags))
|
|
tgs["parent_way_ids"] = JSON.stringify(parentWays.map(w => w.id))
|
|
})
|
|
}
|
|
const src = this.parentWays.get(nodeId)
|
|
src.data.push(osmWay)
|
|
src.ping();
|
|
}
|
|
}
|
|
const now = new Date()
|
|
const asGeojsonFeatures = Array.from(nodesById.values()).map(osmNode => ({
|
|
feature: osmNode.asGeoJson(), freshness: now
|
|
}))
|
|
|
|
const featureSource = new SimpleFeatureSource(this.layer, tileId)
|
|
featureSource.features.setData(asGeojsonFeatures)
|
|
this.loadedTiles.set(tileId, featureSource)
|
|
this.onTileLoaded(featureSource)
|
|
|
|
}
|
|
|
|
/**
|
|
* Returns the OsmNode with the corresponding id (undefined if not found)
|
|
* Note that this OsmNode will have a calculated tag 'parent_ways' and 'parent_way_ids', which are resp. stringified lists of parent way tags and ids
|
|
* @param id
|
|
* @constructor
|
|
*/
|
|
public GetNode(id: number): OsmNode {
|
|
return this.nodeByIds.get(id)
|
|
}
|
|
|
|
/**
|
|
* Gets the parent way list
|
|
* @param nodeId
|
|
* @constructor
|
|
*/
|
|
public GetParentWays(nodeId: number): UIEventSource<OsmWay[]> {
|
|
return this.parentWays.get(nodeId)
|
|
}
|
|
|
|
}
|
|
|