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fix(geo): wrap longitude differences across the antimeridian in point distances (#1304)

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Wrap longitude differences in annotation proximity checks and nearby-place distances so points across the antimeridian remain close.

Original contribution by quanticsoul4772.

Co-authored-by: quanticsoul4772 <[email protected]>
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quanticsoul4772 authored and GitHub committed 2026-10-24 08:19:21 -07:00
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commit 07318cc9a4
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src/sources/featureGeometry.js
+4 -1
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@@ -250,10 +250,13 @@ export function approximateAreaM2(coords) {
return Math.abs(area) / 2;
}
/** Local equirectangular distance in metres, the short way round 180°. */
export function approximateDistanceM(latA, lonA, latB, lonB) {
const latScale = 111_320;
const lonScale = latScale * Math.cos(((latA + latB) / 2) * (Math.PI / 180));
return Math.hypot((latB - latA) * latScale, (lonB - lonA) * lonScale);
let dLon = lonB - lonA;
dLon -= 360 * Math.round(dLon / 360);
return Math.hypot((latB - latA) * latScale, dLon * lonScale);
}
export function pointInPolygon(lon, lat, coords) {