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Add direction:centerpoint as calculated tag; improve typing of geoOperations.ts

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This commit is contained in:
Pieter Vander Vennet 2022-09-27 18:52:13 +02:00
parent 4b6b709b4b
commit 4521889909
2 changed files with 37 additions and 3 deletions
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6
Logic/GeoOperations.ts
View file

@ -13,7 +13,7 @@ import {
Polygon,
Properties,
} from "@turf/turf"
import {GeoJSON, LineString} from "geojson";
import {GeoJSON, LineString, Point} from "geojson";
export class GeoOperations {
private static readonly _earthRadius = 6378137
@ -27,8 +27,8 @@ export class GeoOperations {
* Converts a GeoJson feature to a point GeoJson feature
* @param feature
*/
static centerpoint(feature: any) {
const newFeature = turf.center(feature)
static centerpoint(feature: any): Feature<Point> {
const newFeature : Feature<Point> = turf.center(feature)
newFeature.properties = feature.properties
newFeature.id = feature.id
return newFeature

34
Logic/SimpleMetaTagger.ts
View file

@ -9,6 +9,7 @@ import LayerConfig from "../Models/ThemeConfig/LayerConfig"
import { CountryCoder } from "latlon2country"
import Constants from "../Models/Constants"
import { TagUtils } from "./Tags/TagUtils"
import {Feature, LineString} from "geojson";
export class SimpleMetaTagger {
public readonly keys: string[]
@ -420,6 +421,38 @@ export default class SimpleMetaTaggers {
return true
}
)
private static directionCenterpoint = new SimpleMetaTagger(
{
keys:["_direction:centerpoint"],
isLazy: true,
doc: "_direction:centerpoint is the direction of the linestring (in degrees) if one were standing at the projected centerpoint."
},
(feature: Feature) => {
if(feature.geometry.type !== "LineString"){
return false
}
const ls = <Feature<LineString>> feature;
Object.defineProperty(feature.properties, "_direction:centerpoint", {
enumerable: false,
configurable: true,
get: () => {
const centroid = GeoOperations.centerpoint(feature)
const projected = GeoOperations.nearestPoint(ls, <[number,number]> centroid.geometry.coordinates)
const nextPoint = ls.geometry.coordinates[projected.properties.index + 1]
const bearing = GeoOperations.bearing(projected.geometry.coordinates, nextPoint)
delete feature.properties["_direction:centerpoint"]
feature.properties["_direction:centerpoint"] = bearing
return bearing
},
})
return true
}
)
private static currentTime = new SimpleMetaTagger(
{
keys: ["_now:date", "_now:datetime", "_loaded:date", "_loaded:_datetime"],
@ -457,6 +490,7 @@ export default class SimpleMetaTaggers {
SimpleMetaTaggers.country,
SimpleMetaTaggers.isOpen,
SimpleMetaTaggers.directionSimplified,
SimpleMetaTaggers.directionCenterpoint,
SimpleMetaTaggers.currentTime,
SimpleMetaTaggers.objectMetaInfo,
SimpleMetaTaggers.noBothButLeftRight,