forked from MapComplete/MapComplete
ExtraFunctions: closestN now can work with multiple layers to pick from
This commit is contained in:
Pieter Vander Vennet
parent
593d7bd07a
commit
c298e16f02
1 changed files with 35 additions and 25 deletions
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@ -15,7 +15,7 @@ export interface ExtraFuncParams {
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*/
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getFeaturesWithin: (
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layerId: string,
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bbox: BBox
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bbox: BBox,
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) => Feature<Geometry, Record<string, string>>[][]
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getFeatureById: (id: string) => Feature<Geometry, Record<string, string>>
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}
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@ -71,7 +71,7 @@ class EnclosingFunc implements ExtraFunction {
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if (
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GeoOperations.completelyWithin(
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<Feature>feat,
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<Feature<Polygon | MultiPolygon, any>>otherFeature
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<Feature<Polygon | MultiPolygon, any>>otherFeature,
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)
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) {
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result.push({ feat: otherFeature })
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@ -162,7 +162,7 @@ class IntersectionFunc implements ExtraFunction {
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for (const otherFeature of otherFeatures) {
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const intersections = GeoOperations.LineIntersections(
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feat,
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<Feature<any, Record<string, string>>>otherFeature
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<Feature<any, Record<string, string>>>otherFeature,
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)
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if (intersections.length === 0) {
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continue
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@ -192,7 +192,7 @@ class DistanceToFunc implements ExtraFunction {
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// Feature._lon and ._lat is conveniently place by one of the other metatags
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return GeoOperations.distanceBetween(
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[arg0, lat],
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GeoOperations.centerpointCoordinates(feature)
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GeoOperations.centerpointCoordinates(feature),
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)
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}
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if (typeof arg0 === "string") {
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@ -207,7 +207,7 @@ class DistanceToFunc implements ExtraFunction {
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// arg0 is probably a geojsonfeature
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return GeoOperations.distanceBetween(
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GeoOperations.centerpointCoordinates(arg0),
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GeoOperations.centerpointCoordinates(feature)
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GeoOperations.centerpointCoordinates(feature),
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)
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}
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}
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@ -252,22 +252,29 @@ class ClosestNObjectFunc implements ExtraFunction {
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static GetClosestNFeatures(
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params: ExtraFuncParams,
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feature: any,
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features: string | Feature[],
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options?: { maxFeatures?: number; uniqueTag?: string | undefined; maxDistance?: number }
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features: string | string[] | Feature[],
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options?: { maxFeatures?: number; uniqueTag?: string | undefined; maxDistance?: number },
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): { feat: any; distance: number }[] {
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const maxFeatures = options?.maxFeatures ?? 1
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const maxDistance = options?.maxDistance ?? 500
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const uniqueTag: string | undefined = options?.uniqueTag
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let allFeatures: Feature[][]
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if (typeof features === "string") {
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const name = features
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const bbox = GeoOperations.bbox(
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GeoOperations.buffer(GeoOperations.bbox(feature), maxDistance)
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)
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const coors = <[number, number][]>bbox.geometry.coordinates
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allFeatures = params.getFeaturesWithin(name, new BBox(coors))
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features = [features]
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} else {
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allFeatures = [features]
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allFeatures = []
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for (const spec of features) {
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if (typeof spec === "string") {
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const name = spec
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const bbox = GeoOperations.bbox(
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GeoOperations.buffer(GeoOperations.bbox(feature), maxDistance),
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)
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const coors = <[number, number][]>bbox.geometry.coordinates
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allFeatures.push(...params.getFeaturesWithin(name, new BBox(coors)))
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} else {
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allFeatures.push([spec])
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}
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}
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}
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if (features === undefined) {
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return
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@ -278,6 +285,9 @@ class ClosestNObjectFunc implements ExtraFunction {
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for (const feats of allFeatures) {
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for (const otherFeature of feats) {
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if (otherFeature.properties === undefined) {
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console.warn("OtherFeature does not have properties:", otherFeature)
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}
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if (
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otherFeature === feature ||
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otherFeature.properties.id === feature.properties.id
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@ -286,14 +296,14 @@ class ClosestNObjectFunc implements ExtraFunction {
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}
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const distance = GeoOperations.distanceBetween(
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GeoOperations.centerpointCoordinates(otherFeature),
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selfCenter
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selfCenter,
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)
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if (distance === undefined || distance === null || isNaN(distance)) {
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console.error(
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"Could not calculate the distance between",
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feature,
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"and",
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otherFeature
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otherFeature,
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)
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throw "Undefined distance!"
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}
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@ -303,7 +313,7 @@ class ClosestNObjectFunc implements ExtraFunction {
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"Got a suspiciously zero distance between",
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otherFeature,
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"and self-feature",
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feature
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feature,
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)
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}
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@ -337,7 +347,7 @@ class ClosestNObjectFunc implements ExtraFunction {
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const uniqueTagsMatch =
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otherFeature.properties[uniqueTag] !== undefined &&
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closestFeature.feat.properties[uniqueTag] ===
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otherFeature.properties[uniqueTag]
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otherFeature.properties[uniqueTag]
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if (uniqueTagsMatch) {
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targetIndex = -1
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if (closestFeature.distance > distance) {
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@ -430,7 +440,7 @@ class GetParsed implements ExtraFunction {
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return parsed
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} catch (e) {
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console.warn(
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"Could not parse property " + key + " due to: " + e + ", the value is " + value
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"Could not parse property " + key + " due to: " + e + ", the value is " + value,
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)
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return undefined
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}
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@ -454,15 +464,15 @@ export class ExtraFunctions {
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]),
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"To enable this feature, add a field `calculatedTags` in the layer object, e.g.:",
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"````",
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'"calculatedTags": [',
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' "_someKey=javascript-expression (lazy execution)",',
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' "_some_other_key:=javascript expression (strict execution)',
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' "name=feat.properties.name ?? feat.properties.ref ?? feat.properties.operator",',
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"\"calculatedTags\": [",
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" \"_someKey=javascript-expression (lazy execution)\",",
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" \"_some_other_key:=javascript expression (strict execution)",
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" \"name=feat.properties.name ?? feat.properties.ref ?? feat.properties.operator\",",
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" \"_distanceCloserThen3Km=distanceTo(feat)( some_lon, some_lat) < 3 ? 'yes' : 'no'\" ",
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" ]",
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"````",
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"",
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"By using `:=` as separator, the attribute will be calculated as soone as the data is loaded (strict evaluation)",
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"By using `:=` as separator, the attribute will be calculated as soon as the data is loaded (strict evaluation)",
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"The default behaviour, using `=` as separator, is lazy loading",
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"",
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"The above code will be executed for every feature in the layer. The feature is accessible as `feat` and is an amended geojson object:",
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@ -496,7 +506,7 @@ export class ExtraFunctions {
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]
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public static constructHelpers(
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params: ExtraFuncParams
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params: ExtraFuncParams,
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): Record<ExtraFuncType, (feature: Feature) => Function> {
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const record: Record<string, (feature: GeoJSONFeature) => Function> = {}
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for (const f of ExtraFunctions.allFuncs) {
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