forked from MapComplete/MapComplete
69 lines
No EOL
1.9 KiB
TypeScript
69 lines
No EOL
1.9 KiB
TypeScript
import {OsmNode, OsmRelation, OsmWay} from "../OsmObject";
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/**
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* Represents a single change to an object
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*/
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export interface ChangeDescription {
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/**
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* Identifier of the object
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*/
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type: "node" | "way" | "relation",
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/**
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* Identifier of the object
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* Negative for new objects
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*/
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id: number,
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/**
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* All changes to tags
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* v = "" or v = undefined to erase this tag
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*
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* Note that this list will only contain the _changes_ to the tags, not the full set of tags
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*/
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tags?: { k: string, v: string }[],
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/**
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* A change to the geometry:
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* 1) Change of node location
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* 2) Change of way geometry
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* 3) Change of relation members (untested)
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*/
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changes?: {
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lat: number,
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lon: number
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} | {
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// Coordinates are only used for rendering. They should be LAT, LON
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coordinates: [number, number][]
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nodes: number[],
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} | {
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members: { type: "node" | "way" | "relation", ref: number, role: string }[]
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}
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/*
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Set to delete the object
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*/
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doDelete?: boolean
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}
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export class ChangeDescriptionTools{
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public static getGeojsonGeometry(change: ChangeDescription): any{
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switch (change.type) {
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case "node":
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const n = new OsmNode(change.id)
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n.lat = change.changes["lat"]
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n.lon = change.changes["lon"]
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return n.asGeoJson().geometry
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case "way":
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const w = new OsmWay(change.id)
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w.nodes = change.changes["nodes"]
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w.coordinates = change.changes["coordinates"].map(coor => coor.reverse())
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return w.asGeoJson().geometry
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case "relation":
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const r = new OsmRelation(change.id)
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r.members = change.changes["members"]
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return r.asGeoJson().geometry
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}
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}
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} |