mapcomplete/Logic/Osm/Actions/ChangeDescription.ts

92 lines
No EOL
2.5 KiB
TypeScript

import {OsmNode, OsmRelation, OsmWay} from "../OsmObject";
/**
* Represents a single change to an object
*/
export interface ChangeDescription {
/**
* Metadata to be included in the changeset
*/
meta: {
/*
* The theme with which this changeset was made
*/
theme: string,
/**
* The type of the change
*/
changeType: "answer" | "create" | "split" | "delete" | "move" | "import" | string | null
/**
* THe motivation for the change, e.g. 'deleted because does not exist anymore'
*/
specialMotivation?: string,
/**
* Added by Changes.ts
*/
distanceToObject?: number
},
/**
* Identifier of the object
*/
type: "node" | "way" | "relation",
/**
* Identifier of the object
* Negative for new objects
*/
id: number,
/**
* All changes to tags
* v = "" or v = undefined to erase this tag
*
* Note that this list will only contain the _changes_ to the tags, not the full set of tags
*/
tags?: { k: string, v: string }[],
/**
* A change to the geometry:
* 1) Change of node location
* 2) Change of way geometry
* 3) Change of relation members (untested)
*/
changes?: {
lat: number,
lon: number
} | {
/* Coordinates are only used for rendering. They should be LON, LAT
* */
coordinates: [number, number][]
nodes: number[],
} | {
members: { type: "node" | "way" | "relation", ref: number, role: string }[]
}
/*
Set to delete the object
*/
doDelete?: boolean
}
export class ChangeDescriptionTools {
public static getGeojsonGeometry(change: ChangeDescription): any {
switch (change.type) {
case "node":
const n = new OsmNode(change.id)
n.lat = change.changes["lat"]
n.lon = change.changes["lon"]
return n.asGeoJson().geometry
case "way":
const w = new OsmWay(change.id)
w.nodes = change.changes["nodes"]
w.coordinates = change.changes["coordinates"].map(coor => coor.reverse())
return w.asGeoJson().geometry
case "relation":
const r = new OsmRelation(change.id)
r.members = change.changes["members"]
return r.asGeoJson().geometry
}
}
}