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Fix mesh nodes not centered on /mesh page #189

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Merged
spe1020 merged 1 commit into from
Feb 19, 2026
Merged

Fix mesh nodes not centered on /mesh page #189

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44 changes: 39 additions & 5 deletions src/components/CulinaryMesh.svelte
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Original file line number Diff line number Diff line change
Expand Up @@ -121,6 +121,28 @@
return neighbors;
}

// ── Center nodes within container ────────────────────────────────

function centerNodes() {
if (nodes.length === 0 || width === 0 || height === 0) return;
let minX = Infinity, maxX = -Infinity, minY = Infinity, maxY = -Infinity;
for (const n of nodes) {
if (n.x == null || n.y == null) continue;
if (n.x < minX) minX = n.x;
if (n.x > maxX) maxX = n.x;
if (n.y < minY) minY = n.y;
if (n.y > maxY) maxY = n.y;
}
if (minX === Infinity) return;
const ox = width / 2 - (minX + maxX) / 2;
const oy = height / 2 - (minY + maxY) / 2;
if (Math.abs(ox) < 1 && Math.abs(oy) < 1) return;
for (const n of nodes) {
if (n.x != null) n.x += ox;
if (n.y != null) n.y += oy;
}
}

// ── Simulation ───────────────────────────────────────────────────

function initSimulation() {
Expand All @@ -138,6 +160,8 @@
if (cached) {
const allApplied = applyCachedLayout(nodes, cached);
if (allApplied) {
// Re-center cached positions to the current container
centerNodes();
settled = true;
nodeVersion++;
dispatch('settled');
Expand Down Expand Up @@ -291,6 +315,7 @@
}

function finishSettle() {
centerNodes();
setCachedLayout(nodes, edges.length);
settled = true;
nodeVersion++;
Expand Down Expand Up @@ -494,12 +519,24 @@

// ── Lifecycle ─────────────────────────────────────────────────

let initAttempted = false;

function tryInit() {
if (initAttempted) return;
if (width > 0 && height > 0) {
initAttempted = true;
initSimulation();
}
}

onMount(() => {
resizeObserver = new ResizeObserver((entries) => {
for (const entry of entries) {
width = entry.contentRect.width;
height = entry.contentRect.height;
}
// Container may have just gained dimensions — try to init
tryInit();
});

if (containerEl) {
Expand All @@ -509,11 +546,8 @@
containerEl.addEventListener('wheel', handleWheel, { passive: false });
}

requestAnimationFrame(() => {
if (width > 0 && height > 0) {
initSimulation();
}
});
// Try immediately in case dimensions are already available
requestAnimationFrame(tryInit);
});

onDestroy(() => {
Expand Down