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Merged
arandomguyhere merged 1 commit into from
Jan 2, 2026
Merged

Optimize infrastructure rendering for slow computers #43

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101 changes: 64 additions & 37 deletions static/index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -1393,6 +1393,9 @@
clearTimeout(moveTimeout);
moveTimeout = setTimeout(renderLiveVessels, 100);

// Re-render infrastructure for viewport culling (debounced)
debouncedRenderInfrastructure();

// Auto-update bounding box silently (500ms debounce, with padding)
if (autoUpdateBounds) {
clearTimeout(boundingBoxTimeout);
Expand Down Expand Up @@ -3396,6 +3399,8 @@
if (!showInfrastructure || !balticInfrastructure.length) return;

const layers = [];
const zoom = map.getZoom();
const bounds = map.getBounds();

// Infrastructure type colors
const typeColors = {
Expand All @@ -3406,15 +3411,22 @@
'fiber_optic': '#9b59b6' // Purple
};

// Performance: only render assets in viewport (with padding)
const paddedBounds = bounds.pad(0.2);

balticInfrastructure.forEach(asset => {
const color = typeColors[asset.type] || '#95a5a6';
const waypoints = asset.waypoints || [];

if (waypoints.length > 1) {
// Check if any waypoint is in viewport
const inView = waypoints.some(wp => paddedBounds.contains([wp[0], wp[1]]));
if (!inView) return; // Skip assets outside viewport

// Draw cable/pipeline route as a line
const line = L.polyline(waypoints, {
color: color,
weight: 3,
weight: zoom >= 6 ? 3 : 2,
opacity: 0.7,
dashArray: asset.type.includes('cable') ? null : '10, 5'
});
Expand All @@ -3432,43 +3444,51 @@ <h4 style="margin:0 0 8px 0;color:${color}">${asset.name}</h4>
`);
layers.push(line);

// Draw protection zone circles at key points
const midIdx = Math.floor(waypoints.length / 2);
const midpoint = waypoints[midIdx];
const circle = L.circle([midpoint[0], midpoint[1]], {
radius: asset.protection_radius_nm * 1852, // nm to meters
color: color,
fillColor: color,
fillOpacity: 0.1,
weight: 1,
dashArray: '5, 5'
});
layers.push(circle);

// Add text label for the infrastructure line
const labelIcon = L.divIcon({
className: 'infra-label',
html: `<div style="
background: ${color}dd;
color: white;
padding: 2px 6px;
border-radius: 3px;
font-size: 10px;
font-weight: 600;
white-space: nowrap;
box-shadow: 0 1px 3px rgba(0,0,0,0.4);
border: 1px solid ${color};
">${asset.name}</div>`,
iconSize: [100, 20],
iconAnchor: [50, 10]
});
const label = L.marker([midpoint[0], midpoint[1]], {
icon: labelIcon,
interactive: false
});
layers.push(label);
// Only show protection zones and labels at higher zoom (performance)
if (zoom >= 7) {
const midIdx = Math.floor(waypoints.length / 2);
const midpoint = waypoints[midIdx];

// Protection zone circle
const circle = L.circle([midpoint[0], midpoint[1]], {
radius: asset.protection_radius_nm * 1852,
color: color,
fillColor: color,
fillOpacity: 0.1,
weight: 1,
dashArray: '5, 5'
});
layers.push(circle);

// Text label only at zoom 8+
if (zoom >= 8) {
const labelIcon = L.divIcon({
className: 'infra-label',
html: `<div style="
background: ${color}dd;
color: white;
padding: 2px 6px;
border-radius: 3px;
font-size: 10px;
font-weight: 600;
white-space: nowrap;
box-shadow: 0 1px 3px rgba(0,0,0,0.4);
border: 1px solid ${color};
">${asset.name}</div>`,
iconSize: [100, 20],
iconAnchor: [50, 10]
});
const label = L.marker([midpoint[0], midpoint[1]], {
icon: labelIcon,
interactive: false
});
layers.push(label);
}
}
} else if (asset.latitude && asset.longitude) {
// Point infrastructure
// Point infrastructure - check if in view
if (!paddedBounds.contains([asset.latitude, asset.longitude])) return;

const marker = L.circleMarker([asset.latitude, asset.longitude], {
radius: 8,
color: color,
Expand All @@ -3485,6 +3505,13 @@ <h4 style="margin:0 0 8px 0;color:${color}">${asset.name}</h4>
}
}

// Debounced render for map movement
let infraRenderTimeout = null;
function debouncedRenderInfrastructure() {
if (infraRenderTimeout) clearTimeout(infraRenderTimeout);
infraRenderTimeout = setTimeout(renderInfrastructure, 150);
}

function toggleInfrastructure() {
showInfrastructure = !showInfrastructure;
const btn = document.getElementById('toggle-infrastructure');
Expand Down