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Improve docs and types

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pietervdvn 2022-09-21 02:09:41 +02:00
parent 02278af985
commit bdb5833a1c
1 changed files with 7 additions and 5 deletions
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12
Logic/GeoOperations.ts
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@ -8,11 +8,12 @@ import {
booleanWithin,
Coord,
Feature,
Geometry,
Geometry, Lines,
MultiPolygon,
Polygon,
Properties,
} from "@turf/turf"
import {GeoJSON, LineString} from "geojson";
export class GeoOperations {
private static readonly _earthRadius = 6378137
@ -270,7 +271,8 @@ export class GeoOperations {
}
/**
* Generates the closest point on a way from a given point
* Generates the closest point on a way from a given point.
* If the passed-in geojson object is a polygon, the outer ring will be used as linestring
*
* The properties object will contain three values:
// - `index`: closest point was found on nth line part,
@ -279,15 +281,15 @@ export class GeoOperations {
* @param way The road on which you want to find a point
* @param point Point defined as [lon, lat]
*/
public static nearestPoint(way, point: [number, number]) {
public static nearestPoint(way: Feature<LineString | Polygon>, point: [number, number]) {
if (way.geometry.type === "Polygon") {
way = { ...way }
way.geometry = { ...way.geometry }
way.geometry.type = "LineString"
way.geometry.coordinates = way.geometry.coordinates[0]
way.geometry.coordinates = (<Polygon> way.geometry).coordinates[0]
}
return turf.nearestPointOnLine(way, point, { units: "kilometers" })
return turf.nearestPointOnLine(<Feature<LineString>> way, point, { units: "kilometers" })
}
public static toCSV(features: any[]): string {