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Chore: add some docs, tests and clearer variable names

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This commit is contained in:
Pieter Vander Vennet 2024-06-11 15:05:53 +02:00
parent 3f799398d7
commit aea2a35609
1 changed files with 26 additions and 3 deletions
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29
src/Logic/BBox.ts
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@ -16,6 +16,18 @@ export class BBox {
/***
* Coordinates should be [[lon, lat],[lon, lat]]
* @param coordinates
*
* const bb = new BBox([[5,6]])
* bb.minLat // => 6
* bb.minLon // => 5
* bb.maxLat // => 6
* bb.maxLon // => 5
*
* const bb = new BBox([[-100,-100]])
* bb.minLat // => -90
* bb.minLon // => -100
* bb.maxLat // => -90
* bb.maxLon // => -100
*/
constructor(coordinates: [number, number][]) {
this.maxLat = -90
@ -45,13 +57,24 @@ export class BBox {
])
}
/**
* Gets the bbox from a feature and caches it (by monkeypatching) the relevant feature
*
*
* const f = {type:"Feature",properties: {}, geometry: {type: "Point", coordinates: [-100,45]}}
* const bb = BBox.get(f)
* bb.minLat // => 45
* bb.minLon // => -100
*
*/
static get(feature: Feature): BBox {
const f = <any>feature
if (f.bbox?.overlapsWith === undefined) {
const turfBbox: number[] = turf.bbox(feature)
const [minX, minY, maxX, maxY]: number[] = turf.bbox(feature)
// Note: x is longitude
f["bbox"] = new BBox([
[turfBbox[0], turfBbox[1]],
[turfBbox[2], turfBbox[3]],
[minX, minY],
[maxX, maxY],
])
}
return f["bbox"]