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Said TurkseverandClaude Fable 5.1
fa5710bcf2
Camera-driven Mapillary coverage (z0–5 overview points from orbit, z11–14 ground-clamped sequence lines below 60 km), per-sequence image cones, an embedded MapillaryJS viewer bridge with a camera-follow mode, sprite icons for map features, and a query engine that turns a plan into a streamed z14 tile fan-out. Registers an on-globe CC BY-SA 4.0 credit while enabled. Co-Authored-By: Claude Fable 5.1 <[email protected]>
61 lines
2.2 KiB
JavaScript
61 lines
2.2 KiB
JavaScript
import { PbfReader } from 'pbf';
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import { VectorTile } from '@mapbox/vector-tile';
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import { tileLocalToLonLat } from '../../../src/layers/mapillary/tileMath.js';
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/** Vector-tile layer name inside each Mapillary map-feature tile. */
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const FEATURE_LAYER_NAMES = Object.freeze({
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points: 'point',
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signs: 'traffic_sign',
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});
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/**
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* Decode one map-feature tile into compact rows, keeping only features whose
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* value passes `matcher` and whose sighting window overlaps [since, until].
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* Rows are positional arrays to keep the streamed payload small:
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* [lon, lat, id, value, firstSeenMs, lastSeenMs].
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* @param {Buffer|Uint8Array} bytes
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* @param {{x:number,y:number,z:number,layer:'points'|'signs'}} address
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* @param {{matcher?: (value:string)=>boolean, since?: number|null, until?: number|null}} [filter]
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* @returns {Array<[number, number, string, string, number, number]>}
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*/
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export function decodeFeatureRows(bytes, address, filter = {}) {
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if (!bytes || !bytes.length) return [];
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const layerName = FEATURE_LAYER_NAMES[address.layer];
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const tile = new VectorTile(new PbfReader(bytes));
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const layer = layerName ? tile.layers[layerName] : null;
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if (!layer) return [];
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const matcher = filter.matcher || (() => true);
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const since = Number.isFinite(filter.since) ? filter.since : null;
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const until = Number.isFinite(filter.until) ? filter.until : null;
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const rows = [];
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for (let i = 0; i < layer.length; i++) {
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const feature = layer.feature(i);
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const value = feature.properties?.value;
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if (typeof value !== 'string' || !matcher(value)) continue;
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const first = Number(feature.properties.first_seen_at) || 0;
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const last = Number(feature.properties.last_seen_at) || first;
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if (since !== null && last < since) continue;
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if (until !== null && first > until) continue;
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const geometry = feature.loadGeometry();
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const point = geometry?.[0]?.[0];
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if (!point) continue;
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const [lon, lat] = tileLocalToLonLat(
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point.x,
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point.y,
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layer.extent,
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address.x,
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address.y,
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address.z,
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);
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rows.push([
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Number(lon.toFixed(6)),
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Number(lat.toFixed(6)),
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String(feature.properties.id ?? feature.id ?? ''),
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value,
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first,
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last,
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]);
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}
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return rows;
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}
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