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split routing controls in zoom-specific layers to improve performance

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vcoppe
2026-02-14 15:05:23 +01:00
parent 88abd72a41
commit d6c9fb1025
3 changed files with 111 additions and 66 deletions
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10
website/src/lib/components/toolbar/tools/routing/simplify.ts
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@@ -2,15 +2,21 @@ import { ramerDouglasPeucker, type GPXFile, type TrackSegment } from 'gpx';
const earthRadius = 6371008.8;
export const MIN_ANCHOR_ZOOM = 0;
export const MAX_ANCHOR_ZOOM = 22;
export function getZoomLevelForDistance(latitude: number, distance?: number): number {
if (distance === undefined) {
return 0;
return MIN_ANCHOR_ZOOM;
}
const rad = Math.PI / 180;
const lat = latitude * rad;
return Math.min(22, Math.max(0, Math.log2((earthRadius * Math.cos(lat)) / distance)));
return Math.min(
MAX_ANCHOR_ZOOM,
Math.max(MIN_ANCHOR_ZOOM, Math.round(Math.log2((earthRadius * Math.cos(lat)) / distance)))
);
}
export function updateAnchorPoints(file: GPXFile) {