forked from MapComplete/MapComplete
96 lines
3.8 KiB
Svelte
96 lines
3.8 KiB
Svelte
<script lang="ts">
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import {Store, UIEventSource} from "../../../Logic/UIEventSource"
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import type {MapProperties} from "../../../Models/MapProperties"
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import {Map as MlMap} from "maplibre-gl"
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import {MapLibreAdaptor} from "../../Map/MapLibreAdaptor"
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import MaplibreMap from "../../Map/MaplibreMap.svelte"
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import DragInvitation from "../../Base/DragInvitation.svelte"
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import {GeoOperations} from "../../../Logic/GeoOperations"
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import ShowDataLayer from "../../Map/ShowDataLayer"
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import * as boundsdisplay from "../../../assets/layers/range/range.json"
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import StaticFeatureSource from "../../../Logic/FeatureSource/Sources/StaticFeatureSource"
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import * as turf from "@turf/turf"
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import LayerConfig from "../../../Models/ThemeConfig/LayerConfig"
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import {createEventDispatcher, onDestroy} from "svelte"
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/**
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* A visualisation to pick a location on a map background
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*/
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export let value: UIEventSource<{ lon: number; lat: number }>
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export let initialCoordinate: { lon: number; lat: number }
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initialCoordinate = initialCoordinate ?? value.data
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export let maxDistanceInMeters: number = undefined
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export let mapProperties: Partial<MapProperties> & {
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readonly location: UIEventSource<{ lon: number; lat: number }>
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} = undefined
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/**
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* Called when setup is done, can be used to add more layers to the map
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*/
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export let onCreated: (
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value: Store<{
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lon: number
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lat: number
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}>,
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map: Store<MlMap>,
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mapProperties: MapProperties
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) => void = undefined
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const dispatch = createEventDispatcher<{ click: { lon: number, lat: number } }>()
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export let map: UIEventSource<MlMap> = new UIEventSource<MlMap>(undefined)
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let mla = new MapLibreAdaptor(map, mapProperties)
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mla.lastClickLocation.addCallbackAndRunD(lastClick => {
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dispatch("click", lastClick)
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})
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mapProperties.location.syncWith(value)
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if (onCreated) {
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onCreated(value, map, mla)
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}
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let rangeIsShown = false
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if (maxDistanceInMeters) {
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onDestroy(
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mla.location.addCallbackD((newLocation) => {
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const l = [newLocation.lon, newLocation.lat]
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const c: [number, number] = [initialCoordinate.lon, initialCoordinate.lat]
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const d = GeoOperations.distanceBetween(l, c)
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console.log("distance is", d, l, c)
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if (d <= maxDistanceInMeters) {
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return
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}
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// This is too far away - let's move back
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const correctLocation = GeoOperations.along(c, l, maxDistanceInMeters - 10)
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window.setTimeout(() => {
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mla.location.setData({lon: correctLocation[0], lat: correctLocation[1]})
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}, 25)
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if (!rangeIsShown) {
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new ShowDataLayer(map, {
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layer: new LayerConfig(boundsdisplay),
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features: new StaticFeatureSource([
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turf.circle(c, maxDistanceInMeters, {
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units: "meters",
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properties: {range: "yes", id: "0"},
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}),
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]),
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})
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rangeIsShown = true
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}
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})
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)
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}
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</script>
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<div class="min-h-32 relative h-full cursor-pointer overflow-hidden">
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<div class="absolute top-0 left-0 h-full w-full cursor-pointer">
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<MaplibreMap {map}/>
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</div>
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<div
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class="pointer-events-none absolute top-0 left-0 flex h-full w-full items-center p-8 opacity-50"
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>
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<img class="h-full max-h-24" src="./assets/svg/move-arrows.svg"/>
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</div>
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<DragInvitation hideSignal={mla.location}/>
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</div>
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