mapcomplete/Logic/Osm/Actions/CreateWayWithPointReuseAction.ts

369 lines
13 KiB
TypeScript

import { OsmCreateAction } from "./OsmChangeAction"
import { Tag } from "../../Tags/Tag"
import { Changes } from "../Changes"
import { ChangeDescription } from "./ChangeDescription"
import FeaturePipelineState from "../../State/FeaturePipelineState"
import { BBox } from "../../BBox"
import { TagsFilter } from "../../Tags/TagsFilter"
import { GeoOperations } from "../../GeoOperations"
import FeatureSource from "../../FeatureSource/FeatureSource"
import StaticFeatureSource from "../../FeatureSource/Sources/StaticFeatureSource"
import CreateNewNodeAction from "./CreateNewNodeAction"
import CreateNewWayAction from "./CreateNewWayAction"
export interface MergePointConfig {
withinRangeOfM: number
ifMatches: TagsFilter
mode: "reuse_osm_point" | "move_osm_point"
}
/**
* CreateWayWithPointreuse will create a 'CoordinateInfo' for _every_ point in the way to be created.
*
* The CoordinateInfo indicates the action to take, e.g.:
*
* - Create a new point
* - Reuse an existing OSM point (and don't move it)
* - Reuse an existing OSM point (and leave it where it is)
* - Reuse another Coordinate info (and don't do anything else with it)
*
*/
interface CoordinateInfo {
/**
* The new coordinate
*/
lngLat: [number, number]
/**
* If set: indicates that this point is identical to an earlier point in the way and that that point should be used.
* This is especially needed in closed ways, where the last CoordinateInfo will have '0' as identicalTo
*/
identicalTo?: number
/**
* Information about the closebyNode which might be reused
*/
closebyNodes?: {
/**
* Distance in meters between the target coordinate and this candidate coordinate
*/
d: number
node: any
config: MergePointConfig
}[]
}
/**
* More or less the same as 'CreateNewWay', except that it'll try to reuse already existing points
*/
export default class CreateWayWithPointReuseAction extends OsmCreateAction {
public newElementId: string = undefined
public newElementIdNumber: number = undefined
private readonly _tags: Tag[]
/**
* lngLat-coordinates
* @private
*/
private _coordinateInfo: CoordinateInfo[]
private _state: FeaturePipelineState
private _config: MergePointConfig[]
constructor(
tags: Tag[],
coordinates: [number, number][],
state: FeaturePipelineState,
config: MergePointConfig[]
) {
super(null, true)
this._tags = tags
this._state = state
this._config = config
// The main logic of this class: the coordinateInfo contains all the changes
this._coordinateInfo = this.CalculateClosebyNodes(coordinates)
}
public async getPreview(): Promise<FeatureSource> {
const features = []
let geometryMoved = false
for (let i = 0; i < this._coordinateInfo.length; i++) {
const coordinateInfo = this._coordinateInfo[i]
if (coordinateInfo.identicalTo !== undefined) {
continue
}
if (
coordinateInfo.closebyNodes === undefined ||
coordinateInfo.closebyNodes.length === 0
) {
const newPoint = {
type: "Feature",
properties: {
newpoint: "yes",
id: "new-geometry-with-reuse-" + i,
},
geometry: {
type: "Point",
coordinates: coordinateInfo.lngLat,
},
}
features.push(newPoint)
continue
}
const reusedPoint = coordinateInfo.closebyNodes[0]
if (reusedPoint.config.mode === "move_osm_point") {
const moveDescription = {
type: "Feature",
properties: {
move: "yes",
"osm-id": reusedPoint.node.properties.id,
id: "new-geometry-move-existing" + i,
distance: GeoOperations.distanceBetween(
coordinateInfo.lngLat,
reusedPoint.node.geometry.coordinates
),
},
geometry: {
type: "LineString",
coordinates: [reusedPoint.node.geometry.coordinates, coordinateInfo.lngLat],
},
}
features.push(moveDescription)
} else {
// The geometry is moved, the point is reused
geometryMoved = true
const reuseDescription = {
type: "Feature",
properties: {
move: "no",
"osm-id": reusedPoint.node.properties.id,
id: "new-geometry-reuse-existing" + i,
distance: GeoOperations.distanceBetween(
coordinateInfo.lngLat,
reusedPoint.node.geometry.coordinates
),
},
geometry: {
type: "LineString",
coordinates: [coordinateInfo.lngLat, reusedPoint.node.geometry.coordinates],
},
}
features.push(reuseDescription)
}
}
if (geometryMoved) {
const coords: [number, number][] = []
for (const info of this._coordinateInfo) {
if (info.identicalTo !== undefined) {
coords.push(coords[info.identicalTo])
continue
}
if (info.closebyNodes === undefined || info.closebyNodes.length === 0) {
coords.push(coords[info.identicalTo])
continue
}
const closest = info.closebyNodes[0]
if (closest.config.mode === "reuse_osm_point") {
coords.push(closest.node.geometry.coordinates)
} else {
coords.push(info.lngLat)
}
}
const newGeometry = {
type: "Feature",
properties: {
"resulting-geometry": "yes",
id: "new-geometry",
},
geometry: {
type: "LineString",
coordinates: coords,
},
}
features.push(newGeometry)
}
return StaticFeatureSource.fromGeojson(features)
}
public async CreateChangeDescriptions(changes: Changes): Promise<ChangeDescription[]> {
const theme = this._state?.layoutToUse?.id
const allChanges: ChangeDescription[] = []
const nodeIdsToUse: { lat: number; lon: number; nodeId?: number }[] = []
for (let i = 0; i < this._coordinateInfo.length; i++) {
const info = this._coordinateInfo[i]
const lat = info.lngLat[1]
const lon = info.lngLat[0]
if (info.identicalTo !== undefined) {
nodeIdsToUse.push(nodeIdsToUse[info.identicalTo])
continue
}
if (info.closebyNodes === undefined || info.closebyNodes[0] === undefined) {
const newNodeAction = new CreateNewNodeAction([], lat, lon, {
allowReuseOfPreviouslyCreatedPoints: true,
changeType: null,
theme,
})
allChanges.push(...(await newNodeAction.CreateChangeDescriptions(changes)))
nodeIdsToUse.push({
lat,
lon,
nodeId: newNodeAction.newElementIdNumber,
})
continue
}
const closestPoint = info.closebyNodes[0]
const id = Number(closestPoint.node.properties.id.split("/")[1])
if (closestPoint.config.mode === "move_osm_point") {
allChanges.push({
type: "node",
id,
changes: {
lat,
lon,
},
meta: {
theme,
changeType: null,
},
})
}
nodeIdsToUse.push({ lat, lon, nodeId: id })
}
const newWay = new CreateNewWayAction(this._tags, nodeIdsToUse, {
theme,
})
allChanges.push(...(await newWay.CreateChangeDescriptions(changes)))
this.newElementId = newWay.newElementId
this.newElementIdNumber = newWay.newElementIdNumber
return allChanges
}
/**
* Calculates the main changes.
*/
private CalculateClosebyNodes(coordinates: [number, number][]): CoordinateInfo[] {
const bbox = new BBox(coordinates)
const state = this._state
const allNodes = [].concat(
...(state?.featurePipeline?.GetFeaturesWithin("type_node", bbox.pad(1.2)) ?? [])
)
const maxDistance = Math.max(...this._config.map((c) => c.withinRangeOfM))
// Init coordianteinfo with undefined but the same length as coordinates
const coordinateInfo: {
lngLat: [number, number]
identicalTo?: number
closebyNodes?: {
d: number
node: any
config: MergePointConfig
}[]
}[] = coordinates.map((_) => undefined)
// First loop: gather all information...
for (let i = 0; i < coordinates.length; i++) {
if (coordinateInfo[i] !== undefined) {
// Already seen, probably a duplicate coordinate
continue
}
const coor = coordinates[i]
// Check closeby (and probably identical) points further in the coordinate list, mark them as duplicate
for (let j = i + 1; j < coordinates.length; j++) {
// We look into the 'future' of the way and mark those 'future' locations as being the same as this location
// The continue just above will make sure they get ignored
// This code is important to 'close' ways
if (GeoOperations.distanceBetween(coor, coordinates[j]) < 0.1) {
coordinateInfo[j] = {
lngLat: coor,
identicalTo: i,
}
break
}
}
// Gather the actual info for this point
// Lets search applicable points and determine the merge mode
const closebyNodes: {
d: number
node: any
config: MergePointConfig
}[] = []
for (const node of allNodes) {
const center = node.geometry.coordinates
const d = GeoOperations.distanceBetween(coor, center)
if (d > maxDistance) {
continue
}
for (const config of this._config) {
if (d > config.withinRangeOfM) {
continue
}
if (!config.ifMatches.matchesProperties(node.properties)) {
continue
}
closebyNodes.push({ node, d, config })
}
}
// Sort by distance, closest first
closebyNodes.sort((n0, n1) => {
return n0.d - n1.d
})
coordinateInfo[i] = {
identicalTo: undefined,
lngLat: coor,
closebyNodes,
}
}
// Second loop: figure out which point moves where without creating conflicts
let conflictFree = true
do {
conflictFree = true
for (let i = 0; i < coordinateInfo.length; i++) {
const coorInfo = coordinateInfo[i]
if (coorInfo.identicalTo !== undefined) {
continue
}
if (coorInfo.closebyNodes === undefined || coorInfo.closebyNodes[0] === undefined) {
continue
}
for (let j = i + 1; j < coordinates.length; j++) {
const other = coordinateInfo[j]
if (other.closebyNodes === undefined || other.closebyNodes[0] === undefined) {
continue
}
if (coorInfo.closebyNodes[0] === undefined) {
continue
}
if (other.closebyNodes[0].node === coorInfo.closebyNodes[0].node) {
conflictFree = false
// We have found a conflict!
// We only keep the closest point
if (other.closebyNodes[0].d > coorInfo.closebyNodes[0].d) {
other.closebyNodes.shift()
} else {
coorInfo.closebyNodes.shift()
}
}
}
}
} while (!conflictFree)
return coordinateInfo
}
}