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Geographic prefix disambiguation for route overlay on map page

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2026-03-19 08:05:55 +00:00
parent a1427a3a52
commit 1d4312d010
1 changed files with 29 additions and 7 deletions
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public/map.js
+29 -7
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@@ -117,17 +117,39 @@
}
function drawPacketRoute(hopKeys) {
// Resolve hop short hashes to node positions via prefix match
const positions = [];
for (const hop of hopKeys) {
// Resolve hop short hashes to node positions with geographic disambiguation
const raw = hopKeys.map(hop => {
const hopLower = hop.toLowerCase();
const node = nodes.find(n =>
n.public_key.toLowerCase().startsWith(hopLower)
const candidates = nodes.filter(n =>
n.public_key.toLowerCase().startsWith(hopLower) &&
n.lat != null && n.lon != null && !(n.lat === 0 && n.lon === 0)
);
if (node && node.lat != null && node.lon != null && !(node.lat === 0 && node.lon === 0)) {
positions.push({ lat: node.lat, lon: node.lon, name: node.name || hop });
if (candidates.length === 1) {
return { lat: candidates[0].lat, lon: candidates[0].lon, name: candidates[0].name || hop, resolved: true };
} else if (candidates.length > 1) {
return { name: hop, resolved: false, candidates };
}
return { name: hop, resolved: false };
});
// Disambiguate: pick candidate closest to center of already-resolved hops
const knownPos = raw.filter(h => h.resolved);
if (knownPos.length > 0) {
const cLat = knownPos.reduce((s, p) => s + p.lat, 0) / knownPos.length;
const cLon = knownPos.reduce((s, p) => s + p.lon, 0) / knownPos.length;
const dist = (lat, lon) => Math.sqrt((lat - cLat) ** 2 + (lon - cLon) ** 2);
for (const hop of raw) {
if (!hop.resolved && hop.candidates) {
hop.candidates.sort((a, b) => dist(a.lat, a.lon) - dist(b.lat, b.lon));
const best = hop.candidates[0];
hop.lat = best.lat; hop.lon = best.lon;
hop.name = best.name || hop.name;
hop.resolved = true;
}
}
}
const positions = raw.filter(h => h.resolved);
if (positions.length < 1) return;
// Even a single node is worth showing (zoom to it)