68 lines
2.2 KiB
Svelte
68 lines
2.2 KiB
Svelte
<script lang="ts">
|
|
import { UIEventSource } from "../../../Logic/UIEventSource"
|
|
import type { MapProperties } from "../../../Models/MapProperties"
|
|
import { Map as MlMap } from "maplibre-gl"
|
|
import { MapLibreAdaptor } from "../../Map/MapLibreAdaptor"
|
|
import MaplibreMap from "../../Map/MaplibreMap.svelte"
|
|
import ToSvelte from "../../Base/ToSvelte.svelte"
|
|
import Svg from "../../../Svg.js"
|
|
|
|
/**
|
|
* A visualisation to pick a direction on a map background.
|
|
*/
|
|
export let value: UIEventSource<undefined | string>
|
|
export let mapProperties: Partial<MapProperties> & {
|
|
readonly location: UIEventSource<{ lon: number; lat: number }>
|
|
}
|
|
let map: UIEventSource<MlMap> = new UIEventSource<MlMap>(undefined)
|
|
let mla = new MapLibreAdaptor(map, mapProperties)
|
|
mla.allowMoving.setData(false)
|
|
mla.allowZooming.setData(false)
|
|
let directionElem: HTMLElement | undefined
|
|
$: value.addCallbackAndRunD((degrees) => {
|
|
if (directionElem === undefined) {
|
|
return
|
|
}
|
|
directionElem.style.rotate = degrees + "deg"
|
|
})
|
|
|
|
let mainElem: HTMLElement
|
|
function onPosChange(x: number, y: number) {
|
|
const rect = mainElem.getBoundingClientRect()
|
|
const dx = -(rect.left + rect.right) / 2 + x
|
|
const dy = (rect.top + rect.bottom) / 2 - y
|
|
const angle = (180 * Math.atan2(dy, dx)) / Math.PI
|
|
const angleGeo = Math.floor((450 - angle) % 360)
|
|
value.setData("" + angleGeo)
|
|
}
|
|
|
|
let isDown = false
|
|
</script>
|
|
|
|
<div
|
|
bind:this={mainElem}
|
|
class="relative h-48 w-48 cursor-pointer overflow-hidden"
|
|
on:click={(e) => onPosChange(e.x, e.y)}
|
|
on:mousedown={(e) => {
|
|
isDown = true
|
|
onPosChange(e.clientX, e.clientY)
|
|
}}
|
|
on:mousemove={(e) => {
|
|
if (isDown) {
|
|
onPosChange(e.clientX, e.clientY)
|
|
}
|
|
}}
|
|
on:mouseup={() => {
|
|
isDown = false
|
|
}}
|
|
on:touchmove={(e) => onPosChange(e.touches[0].clientX, e.touches[0].clientY)}
|
|
on:touchstart={(e) => onPosChange(e.touches[0].clientX, e.touches[0].clientY)}
|
|
>
|
|
<div class="absolute top-0 left-0 h-full w-full cursor-pointer">
|
|
<MaplibreMap {map} attribution={false} />
|
|
</div>
|
|
|
|
<div bind:this={directionElem} class="absolute top-0 left-0 h-full w-full">
|
|
<ToSvelte construct={Svg.direction_stroke_svg} />
|
|
</div>
|
|
</div>
|