mapcomplete/Logic/MetaTagging.ts

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import {GeoOperations} from "./GeoOperations";
import State from "../State";
import opening_hours from "opening_hours";
import {And, Or, Tag} from "./Tags";
import {Utils} from "../Utils";
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import CountryCoder from "latlon2country"
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import {UIEventSource} from "./UIEventSource";
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class SimpleMetaTagger {
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private _f: (feature: any, index: number) => void;
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public readonly keys: string[];
public readonly doc: string;
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constructor(keys: string[], doc: string, f: ((feature: any, index: number) => void)) {
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this.keys = keys;
this.doc = doc;
this._f = f;
for (const key of keys) {
if (!key.startsWith('_')) {
throw `Incorrect metakey ${key}: it should start with underscore (_)`
}
}
}
addMetaTags(features: any[]) {
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for (let i = 0; i < features.length; i++) {
let feature = features[i];
this._f(feature, i);
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}
}
}
/**
* Metatagging adds various tags to the elements, e.g. lat, lon, surface area, ...
*
* All metatags start with an underscore
*/
export default class MetaTagging {
private static latlon = new SimpleMetaTagger(["_lat", "_lon"], "The latitude and longitude of the point (or centerpoint in the case of a way/area)",
(feature => {
const centerPoint = GeoOperations.centerpoint(feature);
const lat = centerPoint.geometry.coordinates[1];
const lon = centerPoint.geometry.coordinates[0];
feature.properties["_lat"] = "" + lat;
feature.properties["_lon"] = "" + lon;
})
);
private static surfaceArea = new SimpleMetaTagger(
["_surface", "_surface:ha"], "The surface area of the feature, in square meters and in hectare. Not set on points and ways",
(feature => {
const sqMeters = GeoOperations.surfaceAreaInSqMeters(feature);
feature.properties["_surface"] = "" + sqMeters;
feature.properties["_surface:ha"] = "" + Math.floor(sqMeters / 1000) / 10;
})
);
private static country = new SimpleMetaTagger(
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["_country"], "The country code of the property (with latlon2country)",
(feature, index) => {
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const coder = new CountryCoder("https://pietervdvn.github.io/latlon2country/");
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let centerPoint: any = GeoOperations.centerpoint(feature);
const lat = centerPoint.geometry.coordinates[1];
const lon = centerPoint.geometry.coordinates[0];
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coder.GetCountryCodeFor(lon, lat, (countries) => {
try {
feature.properties["_country"] = countries[0].trim().toLowerCase();
const tagsSource = State.state.allElements.getEventSourceFor(feature);
tagsSource.ping();
} catch (e) {
console.error(e)
}
});
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}
)
private static isOpen = new SimpleMetaTagger(
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["_isOpen", "_isOpen:description"],
"If 'opening_hours' is present, it will add the current state of the feature (being 'yes' or 'no')",
(feature => {
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const tagsSource = State.state.allElements.getEventSourceFor(feature);
tagsSource.addCallbackAndRun(tags => {
if (tags.opening_hours === undefined || tags._country === undefined) {
return;
}
try{
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const oh = new opening_hours(tags["opening_hours"], {
lat: tags._lat,
lon: tags._lon,
address: {
country_code: tags._country.toLowerCase()
}
}, {tag_key: "opening_hours"});
// AUtomatically triggered on the next change
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const updateTags = () => {
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const oldValueIsOpen = tags["_isOpen"];
tags["_isOpen"] = oh.getState() ? "yes" : "no";
const comment = oh.getComment();
if (comment) {
tags["_isOpen:description"] = comment;
}
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if (oldValueIsOpen !== tags._isOpen) {
tagsSource.ping();
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}
const nextChange = oh.getNextChange();
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if (nextChange !== undefined) {
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window.setTimeout(
updateTags,
(nextChange.getTime() - (new Date()).getTime())
)
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}
}
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updateTags();
}catch(e){
console.error(e);
tags["_isOpen"] = "parse_error";
}
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})
})
)
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private static directionSimplified = new SimpleMetaTagger(
["_direction:simplified", "_direction:leftright"], "_direction:simplified turns 'camera:direction' and 'direction' into either 0, 45, 90, 135, 180, 225, 270 or 315, whichever is closest. _direction:leftright is either 'left' or 'right', which is left-looking on the map or 'right-looking' on the map",
(feature => {
const tags = feature.properties;
const direction = tags["camera:direction"] ?? tags["direction"];
if (direction === undefined) {
return;
}
let n = Number(direction);
if (isNaN(n)) {
return;
}
// [22.5 -> 67.5] is sector 1
// [67.5 -> ] is sector 1
n = (n + 22.5) % 360;
n = Math.floor(n / 45);
tags["_direction:simplified"] = n;
tags["_direction:leftright"] = n <= 3 ? "right" : "left";
})
)
private static carriageWayWidth = new SimpleMetaTagger(
["_width:needed", "_width:needed:no_pedestrians", "_width:difference"],
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"Legacy for a specific project calculating the needed width for safe traffic on a road. Only activated if 'width:carriageway' is present",
(feature: any, index: number) => {
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const properties = feature.properties;
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if (properties["width:carriageway"] === undefined) {
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return;
}
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const carWidth = 2;
const cyclistWidth = 1.5;
const pedestrianWidth = 0.75;
const _leftSideParking =
new And([new Tag("parking:lane:left", "parallel"), new Tag("parking:lane:right", "no_parking")]);
const _rightSideParking =
new And([new Tag("parking:lane:right", "parallel"), new Tag("parking:lane:left", "no_parking")]);
const _bothSideParking = new Tag("parking:lane:both", "parallel");
const _noSideParking = new Tag("parking:lane:both", "no_parking");
const _otherParkingMode =
new Or([
new Tag("parking:lane:both", "perpendicular"),
new Tag("parking:lane:left", "perpendicular"),
new Tag("parking:lane:right", "perpendicular"),
new Tag("parking:lane:both", "diagonal"),
new Tag("parking:lane:left", "diagonal"),
new Tag("parking:lane:right", "diagonal"),
])
const _sidewalkBoth = new Tag("sidewalk", "both");
const _sidewalkLeft = new Tag("sidewalk", "left");
const _sidewalkRight = new Tag("sidewalk", "right");
const _sidewalkNone = new Tag("sidewalk", "none");
let parkingStateKnown = true;
let parallelParkingCount = 0;
const _oneSideParking = new Or([_leftSideParking, _rightSideParking]);
if (_oneSideParking.matchesProperties(properties)) {
parallelParkingCount = 1;
} else if (_bothSideParking.matchesProperties(properties)) {
parallelParkingCount = 2;
} else if (_noSideParking.matchesProperties(properties)) {
parallelParkingCount = 0;
} else if (_otherParkingMode.matchesProperties(properties)) {
parallelParkingCount = 0;
} else {
parkingStateKnown = false;
console.log("No parking data for ", properties.name, properties.id, properties)
}
let pedestrianFlowNeeded;
if (_sidewalkBoth.matchesProperties(properties)) {
pedestrianFlowNeeded = 0;
} else if (_sidewalkNone.matchesProperties(properties)) {
pedestrianFlowNeeded = 2;
} else if (_sidewalkLeft.matchesProperties(properties) || _sidewalkRight.matchesProperties(properties)) {
pedestrianFlowNeeded = 1;
} else {
pedestrianFlowNeeded = -1;
}
let onewayCar = properties.oneway === "yes";
let onewayBike = properties["oneway:bicycle"] === "yes" ||
(onewayCar && properties["oneway:bicycle"] === undefined)
let cyclingAllowed =
!(properties.bicycle === "use_sidepath"
|| properties.bicycle === "no");
let carWidthUsed = (onewayCar ? 1 : 2) * carWidth;
properties["_width:needed:cars"] = Utils.Round(carWidthUsed);
properties["_width:needed:parking"] = Utils.Round(parallelParkingCount * carWidth)
let cyclistWidthUsed = 0;
if (cyclingAllowed) {
cyclistWidthUsed = (onewayBike ? 1 : 2) * cyclistWidth;
}
properties["_width:needed:cyclists"] = Utils.Round(cyclistWidthUsed)
const width = parseFloat(properties["width:carriageway"]);
const targetWidthIgnoringPedestrians =
carWidthUsed +
cyclistWidthUsed +
parallelParkingCount * carWidthUsed;
properties["_width:needed:no_pedestrians"] =Utils.Round(targetWidthIgnoringPedestrians);
const pedestriansNeed = Math.max(0, pedestrianFlowNeeded) * pedestrianWidth;
const targetWidth = targetWidthIgnoringPedestrians + pedestriansNeed ;
properties["_width:needed"] = Utils.Round(targetWidth);
properties["_width:needed:pedestrians"] = Utils.Round(pedestriansNeed)
properties["_width:difference"] = Utils.Round(targetWidth - width );
properties["_width:difference:no_pedestrians"] = Utils.Round(targetWidthIgnoringPedestrians - width) ;
}
);
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private static metatags = [
MetaTagging.latlon,
MetaTagging.surfaceArea,
MetaTagging.country,
MetaTagging.isOpen,
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MetaTagging.carriageWayWidth,
MetaTagging.directionSimplified
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];
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/**
* An actor which adds metatags on every feature in the given object
* The features are a list of geojson-features, with a "properties"-field and geometry
*/
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static addMetatags(features: any[]) {
for (const metatag of MetaTagging.metatags) {
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try {
metatag.addMetaTags(features);
} catch (e) {
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console.error("Could not calculate metatag for ", metatag.keys.join(","), ":", e)
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}
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}
}
}