feat: v2 multi-session parser + timeline range viewer

This commit is contained in:
Poulpe
2026-04-25 20:31:17 +00:00
parent 4ceec113b6
commit b46f136b76
2 changed files with 464 additions and 128 deletions

View File

@@ -1,24 +1,39 @@
#!/usr/bin/env python3
"""Parse USV long-format CSV → track.geojson + points.json"""
"""Parse USV long-format CSV → track.geojson + points.json + manifest.json
v2: multi-session support via --input-dir, retro-compat with --input (single file)
"""
import argparse
import csv
import glob
import json
import os
import sys
from collections import defaultdict
from datetime import datetime, timezone
MAX_SLIDER_POINTS = 5000
MAX_SLIDER_POINTS = 10000
def parse_args():
p = argparse.ArgumentParser(description="Parse USV nav CSV")
p.add_argument("--input", required=True, help="CSV navigation log")
p = argparse.ArgumentParser(description="Parse USV nav CSV v2")
g = p.add_mutually_exclusive_group(required=True)
g.add_argument("--input", help="Single CSV navigation log (v1 compat)")
g.add_argument("--input-dir", help="Directory: glob *navigation_log*.csv")
p.add_argument("--output", required=True, help="Output directory")
return p.parse_args()
def find_csvs(input_dir):
pattern = os.path.join(input_dir, "*navigation_log*.csv")
files = sorted(glob.glob(pattern))
if not files:
print(f"No navigation_log CSVs found in {input_dir}", file=sys.stderr)
sys.exit(1)
return files
def load_csv(path):
"""Load long-format CSV into {timestamp: {field: value}}"""
"""Load long-format CSV {timestamp: {field: value}}"""
rows_by_ts = defaultdict(dict)
with open(path, newline="", encoding="utf-8") as f:
reader = csv.DictReader(f)
@@ -41,13 +56,26 @@ def get_float(d, *keys):
return None
def build_points(rows_by_ts):
"""Build sorted list of {t, lat, lon, heading} where lat/lon valid."""
# We need to track last known lat/lon/heading per timestamp cluster.
# Strategy: walk timestamps in order, emit a point each time we see a Lat or Lon update.
# Accumulate state across timestamps.
timestamps = sorted(rows_by_ts.keys())
def ts_to_ms(ts_str):
"""Convert ISO-like timestamp string to epoch ms (UTC)."""
# Try formats: '2026-03-24 09:04:07.123456' or '2026-03-24T09:04:07.123456'
for fmt in (
"%Y-%m-%dT%H:%M:%S.%f",
"%Y-%m-%dT%H:%M:%S",
"%Y-%m-%d %H:%M:%S.%f",
"%Y-%m-%d %H:%M:%S",
):
try:
dt = datetime.strptime(ts_str, fmt).replace(tzinfo=timezone.utc)
return int(dt.timestamp() * 1000)
except ValueError:
continue
return None
def build_points(rows_by_ts, source_name):
"""Build sorted list of {t, t_ms, lat, lon, heading, source}."""
timestamps = sorted(rows_by_ts.keys())
state = {}
points = []
@@ -55,7 +83,6 @@ def build_points(rows_by_ts):
updates = rows_by_ts[ts]
state.update(updates)
# Only emit point if we have both Lat and Lon from this or earlier ts
lat = get_float(state, "Lat", "RAW_Lat")
lon = get_float(state, "Lon", "RAW_Lon")
heading = get_float(state, "Heading", "Yaw")
@@ -64,7 +91,6 @@ def build_points(rows_by_ts):
continue
if lat == 0.0 and lon == 0.0:
continue
# GPS_RAW_INT fallback (1e-7 degrees)
if abs(lat) < 1 and abs(lon) < 1:
raw_lat = get_float(state, "GPS_RAW_INT_lat")
raw_lon = get_float(state, "GPS_RAW_INT_lon")
@@ -74,87 +100,200 @@ def build_points(rows_by_ts):
else:
continue
# Only emit if Lat or Lon just updated (reduce duplicate consecutive points)
if "Lat" in updates or "Lon" in updates or "RAW_Lat" in updates or "RAW_Lon" in updates:
t_ms = ts_to_ms(ts)
points.append({
"t": ts,
"t_ms": t_ms,
"lat": round(lat, 8),
"lon": round(lon, 8),
"heading": round(heading, 2) if heading is not None else None,
"source": source_name,
})
return points
def sample_points(points, max_n):
if len(points) <= max_n:
def sample_points_session(points, max_total, n_sessions):
"""Sample per session, always keeping first+last point of each session."""
if not points:
return points
step = len(points) / max_n
return [points[int(i * step)] for i in range(max_n)]
quota = max(10, max_total // max(n_sessions, 1))
if len(points) <= quota:
return points
step = (len(points) - 2) / max(quota - 2, 1)
sampled = [points[0]]
for i in range(1, quota - 1):
sampled.append(points[min(int(1 + i * step), len(points) - 2)])
sampled.append(points[-1])
return sampled
def write_geojson(points, path):
coords = [[p["lon"], p["lat"]] for p in points]
geojson = {
"type": "FeatureCollection",
"features": [{
def session_bbox(points):
lats = [p["lat"] for p in points]
lons = [p["lon"] for p in points]
return [min(lons), min(lats), max(lons), max(lats)]
def write_outputs(all_sessions, output_dir):
"""Write track.geojson, points.json, manifest.json."""
os.makedirs(output_dir, exist_ok=True)
# Colors for multi-track
COLORS = ["#00b4d8", "#e94560", "#06d6a0", "#ffd166", "#a855f7", "#f97316"]
# ── track.geojson (MultiLineString per session) ──
features = []
for i, sess in enumerate(all_sessions):
coords = [[p["lon"], p["lat"]] for p in sess["points"]]
features.append({
"type": "Feature",
"geometry": {"type": "LineString", "coordinates": coords},
"properties": {
"start": points[0]["t"] if points else None,
"end": points[-1]["t"] if points else None,
"n_points": len(points),
"source_file": sess["source_file"],
"source_name": sess["source_name"],
"start_iso": sess["t_start"],
"end_iso": sess["t_end"],
"n_points": len(coords),
"color": COLORS[i % len(COLORS)],
"session_index": i,
}
}]
}
with open(path, "w") as f:
})
geojson = {"type": "FeatureCollection", "features": features}
geo_path = os.path.join(output_dir, "track.geojson")
with open(geo_path, "w") as f:
json.dump(geojson, f)
print(f" track.geojson: {len(coords)} coords → {path}")
print(f" track.geojson: {len(features)} sessions → {geo_path}")
# ── points.json (all sampled, sorted by t_ms) ──
all_points = []
n_sessions = len(all_sessions)
for sess in all_sessions:
sampled = sample_points_session(sess["points"], MAX_SLIDER_POINTS, n_sessions)
all_points.extend(sampled)
# Sort by t_ms (sessions may overlap in time)
all_points.sort(key=lambda p: (p["t_ms"] or 0))
pts_path = os.path.join(output_dir, "points.json")
with open(pts_path, "w") as f:
json.dump(all_points, f)
print(f" points.json: {len(all_points)} points (sampled) → {pts_path}")
# ── manifest.json ──
all_lats = [p["lat"] for s in all_sessions for p in s["points"]]
all_lons = [p["lon"] for s in all_sessions for p in s["points"]]
global_bbox = [min(all_lons), min(all_lats), max(all_lons), max(all_lats)]
all_t_ms = [p["t_ms"] for s in all_sessions for p in s["points"] if p["t_ms"]]
t_min_ms = min(all_t_ms) if all_t_ms else None
t_max_ms = max(all_t_ms) if all_t_ms else None
sessions_meta = []
for sess in all_sessions:
sessions_meta.append({
"file": sess["source_file"],
"source_name": sess["source_name"],
"n_points": sess["n_points_raw"],
"t_start": sess["t_start"],
"t_end": sess["t_end"],
"t_start_ms": sess["t_start_ms"],
"t_end_ms": sess["t_end_ms"],
"bbox": sess["bbox"],
})
manifest = {
"generated_at": datetime.now(timezone.utc).isoformat(),
"n_sessions": len(all_sessions),
"sessions": sessions_meta,
"global_bbox": global_bbox,
"t_min": all_sessions[0]["t_start"] if all_sessions else None,
"t_max": all_sessions[-1]["t_end"] if all_sessions else None,
"t_min_ms": t_min_ms,
"t_max_ms": t_max_ms,
"n_points_total_raw": sum(s["n_points_raw"] for s in all_sessions),
"n_points_sampled": len(all_points),
}
mf_path = os.path.join(output_dir, "manifest.json")
with open(mf_path, "w") as f:
json.dump(manifest, f, indent=2)
print(f" manifest.json → {mf_path}")
return manifest
def write_points_json(points, path):
with open(path, "w") as f:
json.dump(points, f)
print(f" points.json: {len(points)} points → {path}")
def print_global_stats(manifest, all_sessions):
print(f"\n=== Stats globales ===")
print(f" Sessions: {manifest['n_sessions']}")
print(f" Points bruts: {manifest['n_points_total_raw']}")
print(f" Points sampled: {manifest['n_points_sampled']}")
print(f" t_min: {manifest['t_min']}")
print(f" t_max: {manifest['t_max']}")
bb = manifest["global_bbox"]
print(f" Bbox: lon [{bb[0]:.5f}, {bb[2]:.5f}] lat [{bb[1]:.5f}, {bb[3]:.5f}]")
if manifest["t_min_ms"] and manifest["t_max_ms"]:
dur_s = (manifest["t_max_ms"] - manifest["t_min_ms"]) / 1000
h, rem = divmod(int(dur_s), 3600)
m, s = divmod(rem, 60)
print(f" Durée totale: {h}h{m:02d}m{s:02d}s")
for i, sess in enumerate(all_sessions):
print(f" Session {i+1}: {sess['source_name']} {sess['n_points_raw']} pts {sess['t_start']}{sess['t_end']}")
def print_stats(points):
def process_file(path):
source_name = os.path.basename(path)
print(f"\nChargement {source_name} ...")
rows = load_csv(path)
print(f" {len(rows)} timestamps uniques")
points = build_points(rows, source_name)
if not points:
print("No valid points found!")
return
print(f" WARNING: aucun point GPS valide dans {source_name}")
return None
# Filter points without t_ms
points = [p for p in points if p["t_ms"] is not None]
lats = [p["lat"] for p in points]
lons = [p["lon"] for p in points]
print(f"\n=== Stats ===")
print(f" N points (full): {len(points)}")
print(f" First ts: {points[0]['t']}")
print(f" Last ts: {points[-1]['t']}")
print(f" Bbox lat: {min(lats):.6f}{max(lats):.6f}")
print(f" Bbox lon: {min(lons):.6f}{max(lons):.6f}")
headings = [p["heading"] for p in points if p["heading"] is not None]
print(f" Heading data: {'yes' if headings else 'no'} ({len(headings)} values)")
return {
"source_file": path,
"source_name": source_name,
"points": points,
"n_points_raw": len(points),
"t_start": points[0]["t"],
"t_end": points[-1]["t"],
"t_start_ms": points[0]["t_ms"],
"t_end_ms": points[-1]["t_ms"],
"bbox": [min(lons), min(lats), max(lons), max(lats)],
}
def main():
args = parse_args()
os.makedirs(args.output, exist_ok=True)
print(f"Loading {args.input} ...")
rows = load_csv(args.input)
print(f" {len(rows)} unique timestamps")
if args.input:
csv_files = [args.input]
else:
csv_files = find_csvs(args.input_dir)
points = build_points(rows)
print_stats(points)
print(f"Fichiers trouvés: {len(csv_files)}")
for f in csv_files:
print(f" {os.path.basename(f)}")
if not points:
all_sessions = []
for path in csv_files:
sess = process_file(path)
if sess:
all_sessions.append(sess)
if not all_sessions:
print("Aucune session valide.", file=sys.stderr)
sys.exit(1)
write_geojson(points, os.path.join(args.output, "track.geojson"))
sampled = sample_points(points, MAX_SLIDER_POINTS)
if len(sampled) < len(points):
print(f" Sampled {len(sampled)} points for slider (from {len(points)})")
write_points_json(sampled, os.path.join(args.output, "points.json"))
manifest = write_outputs(all_sessions, args.output)
print_global_stats(manifest, all_sessions)
print("\nDone.")

View File

@@ -2,59 +2,128 @@
<html lang="fr">
<head>
<meta charset="utf-8">
<title>COSMA — USV Track Viewer</title>
<title>COSMA — USV Multi-Track Viewer v2</title>
<meta name="viewport" content="width=device-width,initial-scale=1">
<link rel="stylesheet" href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css"/>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/noUiSlider/15.7.1/nouislider.min.css"/>
<style>
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: monospace; background: #1a1a2e; color: #e0e0e0; display: flex; flex-direction: column; height: 100vh; }
#map { flex: 1; }
#map { flex: 1; min-height: 0; }
#controls {
background: #16213e;
padding: 8px 12px;
padding: 10px 14px 8px;
border-top: 1px solid #0f3460;
display: flex;
flex-direction: column;
gap: 7px;
flex-shrink: 0;
}
#top-row {
display: flex;
align-items: center;
gap: 12px;
border-top: 1px solid #0f3460;
flex-wrap: wrap;
}
#slider { flex: 1; cursor: pointer; }
#info { font-size: 11px; min-width: 340px; color: #a0c4ff; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
#title { font-size: 13px; font-weight: bold; color: #e94560; white-space: nowrap; }
#stats { font-size: 11px; color: #a0c4ff; flex: 1; }
#btn-reset {
background: #0f3460; border: 1px solid #00b4d8; color: #00b4d8;
padding: 3px 10px; cursor: pointer; font-family: monospace; font-size: 11px;
border-radius: 2px;
}
#btn-reset:hover { background: #00b4d8; color: #1a1a2e; }
/* Range slider row */
#range-row {
display: flex;
align-items: center;
gap: 10px;
}
#range-label { font-size: 10px; color: #666; white-space: nowrap; }
#range-slider-wrap { flex: 1; padding: 4px 0; }
#range-dates { display: flex; justify-content: space-between; font-size: 10px; color: #a0c4ff; }
/* Cursor slider row */
#cursor-row {
display: flex;
align-items: center;
gap: 10px;
}
#cursor-label { font-size: 10px; color: #666; white-space: nowrap; }
#cursor-slider-wrap { flex: 1; }
#cursor-info { font-size: 11px; color: #e0e0e0; min-width: 280px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
/* noUiSlider overrides */
.noUi-target { background: #0f3460; border: none; border-radius: 2px; box-shadow: none; }
.noUi-horizontal { height: 6px; }
.noUi-connect { background: #00b4d8; }
.noUi-handle {
background: #00b4d8; border: 2px solid #fff;
border-radius: 50%; width: 14px !important; height: 14px !important;
top: -5px !important; right: -7px !important;
box-shadow: none; cursor: pointer;
}
.noUi-handle::before, .noUi-handle::after { display: none; }
#cursor-slider .noUi-connect { background: #e94560; }
#cursor-slider .noUi-handle { background: #e94560; }
/* Legend */
#legend {
position: absolute; bottom: 200px; left: 10px; z-index: 1000;
background: rgba(22,33,62,0.92); padding: 8px 10px; border: 1px solid #0f3460;
font-size: 11px; font-family: monospace;
display: none;
}
.legend-item { display: flex; align-items: center; gap: 6px; margin: 2px 0; }
.legend-dot { width: 12px; height: 4px; border-radius: 2px; flex-shrink: 0; }
</style>
</head>
<body>
<div id="map"></div>
<div id="legend"></div>
<div id="controls">
<span id="title">USV Track</span>
<input type="range" id="slider" min="0" value="0">
<div id="info">Chargement…</div>
<div id="top-row">
<span id="title">USV Multi-Track v2</span>
<span id="stats">Chargement…</span>
<button id="btn-reset">Reset window</button>
</div>
<div id="range-row">
<span id="range-label">Fenêtre</span>
<div id="range-slider-wrap"><div id="range-slider"></div></div>
</div>
<div id="range-dates">
<span id="date-start"></span>
<span id="date-end"></span>
</div>
<div id="cursor-row">
<span id="cursor-label">Curseur</span>
<div id="cursor-slider-wrap"><div id="cursor-slider"></div></div>
<div id="cursor-info"></div>
</div>
</div>
<script src="https://unpkg.com/leaflet@1.9.4/dist/leaflet.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/noUiSlider/15.7.1/nouislider.min.js"></script>
<script>
// ── Constants ────────────────────────────────────────────────────────────
const COLORS = ['#00b4d8','#e94560','#06d6a0','#ffd166','#a855f7','#f97316'];
// ── Map init ──────────────────────────────────────────────────────────────
const map = L.map('map', { zoomControl: true });
const osm = L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
attribution: '© OpenStreetMap contributors',
maxZoom: 19,
attribution: '© OpenStreetMap contributors', maxZoom: 19,
});
osm.addTo(map);
const seamarks = L.tileLayer('https://tiles.openseamap.org/seamark/{z}/{x}/{y}.png', {
attribution: '© OpenSeaMap',
maxZoom: 18,
opacity: 0.8,
attribution: '© OpenSeaMap', maxZoom: 18, opacity: 0.8,
});
// GEBCO bathymetry (tile-based, simpler than WMS)
const gebco = L.tileLayer(
'https://tiles.arcgis.com/tiles/C8EMgrsFcRFL6LrL/arcgis/rest/services/GEBCO_basemap_NCEI/MapServer/tile/{z}/{y}/{x}',
{
attribution: 'GEBCO / NCEI',
maxZoom: 13,
opacity: 0.6,
}
{ attribution: 'GEBCO / NCEI', maxZoom: 13, opacity: 0.6 }
);
L.control.layers(
@@ -63,79 +132,207 @@ L.control.layers(
{ collapsed: false }
).addTo(map);
// ── SVG arrow marker factory ──────────────────────────────────────────────
function makeArrowIcon(heading) {
// ── Arrow marker ──────────────────────────────────────────────────────────
function makeArrowIcon(heading, color) {
color = color || '#e94560';
const svg = `<svg xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="-16 -16 32 32">
<g transform="rotate(${heading || 0})">
<polygon points="0,-12 6,8 0,4 -6,8" fill="#e94560" stroke="#fff" stroke-width="1.5"/>
<polygon points="0,-12 6,8 0,4 -6,8" fill="${color}" stroke="#fff" stroke-width="1.5"/>
</g>
</svg>`;
return L.divIcon({
html: svg,
className: '',
iconSize: [32, 32],
iconAnchor: [16, 16],
return L.divIcon({ html: svg, className: '', iconSize: [32,32], iconAnchor: [16,16] });
}
// ── State ─────────────────────────────────────────────────────────────────
let allPoints = []; // all sampled points sorted by t_ms
let manifest = null;
let trackLayers = []; // per-session polyline layers
let windowPoints = []; // filtered by range window
let cursorMarker = null;
let rangeSlider = null;
let cursorSlider = null;
let tMin = 0, tMax = 0;
// ── Utils ─────────────────────────────────────────────────────────────────
function fmtMs(ms) {
if (!ms) return '—';
return new Date(ms).toISOString().replace('T',' ').slice(0,19) + ' UTC';
}
function fmtDuration(ms) {
const s = Math.floor(ms / 1000);
const h = Math.floor(s / 3600);
const m = Math.floor((s % 3600) / 60);
const sc = s % 60;
return h > 0 ? `${h}h${String(m).padStart(2,'0')}m` : `${m}m${String(sc).padStart(2,'0')}s`;
}
// ── Range window filtering ────────────────────────────────────────────────
function filterPointsInWindow(startMs, endMs) {
return allPoints.filter(p => p.t_ms >= startMs && p.t_ms <= endMs);
}
function updateWindow(startMs, endMs) {
document.getElementById('date-start').textContent = fmtMs(startMs);
document.getElementById('date-end').textContent = fmtMs(endMs);
windowPoints = filterPointsInWindow(startMs, endMs);
// Rebuild track layers by session
trackLayers.forEach(l => map.removeLayer(l));
trackLayers = [];
if (!manifest) return;
const sessionGroups = {};
windowPoints.forEach(p => {
if (!sessionGroups[p.source]) sessionGroups[p.source] = [];
sessionGroups[p.source].push(p);
});
manifest.sessions.forEach((sess, i) => {
const pts = sessionGroups[sess.source_name] || [];
if (pts.length < 2) return;
const coords = pts.map(p => [p.lat, p.lon]);
const color = COLORS[i % COLORS.length];
const layer = L.polyline(coords, { color, weight: 2.5, opacity: 0.85 }).addTo(map);
trackLayers.push(layer);
});
// Update cursor slider range
if (cursorSlider && windowPoints.length > 0) {
cursorSlider.updateOptions({
range: { min: 0, max: Math.max(windowPoints.length - 1, 1) },
});
cursorSlider.set(0);
}
updateStats(startMs, endMs);
}
function updateStats(startMs, endMs) {
const dur = endMs - startMs;
document.getElementById('stats').textContent =
`${windowPoints.length} pts dans fenêtre | durée: ${fmtDuration(dur)} | sessions: ${manifest ? manifest.n_sessions : '?'}`;
}
// ── Cursor ────────────────────────────────────────────────────────────────
function updateCursor(idx) {
idx = Math.max(0, Math.min(idx, windowPoints.length - 1));
const p = windowPoints[idx];
if (!p) return;
// Find session color
const sessIdx = manifest ? manifest.sessions.findIndex(s => s.source_name === p.source) : 0;
const color = COLORS[Math.max(0, sessIdx) % COLORS.length];
if (!cursorMarker) {
cursorMarker = L.marker([p.lat, p.lon], { icon: makeArrowIcon(p.heading || 0, color), zIndexOffset: 1000 }).addTo(map);
} else {
cursorMarker.setLatLng([p.lat, p.lon]);
cursorMarker.setIcon(makeArrowIcon(p.heading || 0, color));
}
const hdg = p.heading !== null && p.heading !== undefined ? `${p.heading.toFixed(1)}°` : 'N/A';
document.getElementById('cursor-info').textContent =
`[${idx+1}/${windowPoints.length}] ${p.t} | ${p.lat.toFixed(6)}, ${p.lon.toFixed(6)} | cap: ${hdg} | ${p.source}`;
}
// ── Legend ────────────────────────────────────────────────────────────────
function buildLegend() {
if (!manifest || manifest.n_sessions <= 1) return;
const el = document.getElementById('legend');
el.style.display = 'block';
el.innerHTML = manifest.sessions.map((s, i) => {
const color = COLORS[i % COLORS.length];
const name = s.source_name.replace('_navigation_log', '').replace('.csv', '');
return `<div class="legend-item"><div class="legend-dot" style="background:${color}"></div><span>${name}</span></div>`;
}).join('');
}
// ── Init sliders ──────────────────────────────────────────────────────────
function initSliders() {
// Range slider
rangeSlider = noUiSlider.create(document.getElementById('range-slider'), {
start: [tMin, tMax],
connect: true,
range: { min: tMin, max: tMax },
step: 1000,
behaviour: 'drag',
});
rangeSlider.on('update', (values) => {
updateWindow(+values[0], +values[1]);
});
// Cursor slider (single handle inside window)
cursorSlider = noUiSlider.create(document.getElementById('cursor-slider'), {
start: [0],
range: { min: 0, max: Math.max(allPoints.length - 1, 1) },
step: 1,
});
cursorSlider.on('update', (values) => {
updateCursor(Math.round(+values[0]));
});
}
// ── Data loading ──────────────────────────────────────────────────────────
let points = [];
let trackLayer = null;
let marker = null;
// ── Reset window ──────────────────────────────────────────────────────────
document.getElementById('btn-reset').addEventListener('click', () => {
if (rangeSlider) rangeSlider.set([tMin, tMax]);
});
// ── Main load ─────────────────────────────────────────────────────────────
async function loadData() {
try {
const [trackResp, pointsResp] = await Promise.all([
fetch('track.geojson'),
fetch('points.json'),
const [trackResp, pointsResp, manifestResp] = await Promise.all([
fetch('data/track.geojson'),
fetch('data/points.json'),
fetch('data/manifest.json'),
]);
if (!trackResp.ok) throw new Error('track.geojson not found');
if (!pointsResp.ok) throw new Error('points.json not found');
if (!manifestResp.ok) throw new Error('manifest.json not found');
const trackGeo = await trackResp.json();
points = await pointsResp.json();
allPoints = await pointsResp.json();
manifest = await manifestResp.json();
// Draw track
trackLayer = L.geoJSON(trackGeo, {
style: { color: '#00b4d8', weight: 2, opacity: 0.8 },
// Initial full-track display (all sessions)
L.geoJSON(trackGeo, {
style: (feature) => ({
color: feature.properties.color || '#00b4d8',
weight: 2,
opacity: 0.5,
}),
}).addTo(map);
map.fitBounds(trackLayer.getBounds(), { padding: [40, 40] });
// Init slider
const slider = document.getElementById('slider');
slider.max = points.length - 1;
slider.value = 0;
slider.addEventListener('input', () => updateMarker(+slider.value));
// Init marker
if (points.length > 0) {
const p = points[0];
marker = L.marker([p.lat, p.lon], { icon: makeArrowIcon(p.heading || 0) }).addTo(map);
updateInfo(0);
// Fit bounds
if (allPoints.length > 0) {
const lats = allPoints.map(p => p.lat);
const lons = allPoints.map(p => p.lon);
map.fitBounds([[Math.min(...lats), Math.min(...lons)], [Math.max(...lats), Math.max(...lons)]], { padding: [40,40] });
}
document.getElementById('title').textContent = `USV Track — ${points.length} pts`;
// Time range
tMin = manifest.t_min_ms || Math.min(...allPoints.map(p => p.t_ms || Infinity));
tMax = manifest.t_max_ms || Math.max(...allPoints.map(p => p.t_ms || -Infinity));
if (tMin === tMax) tMax = tMin + 1000; // safety
document.getElementById('title').textContent =
`USV Multi-Track — ${manifest.n_sessions} sessions — ${manifest.n_points_sampled} pts`;
buildLegend();
initSliders();
// Initial window = full range
windowPoints = [...allPoints];
updateStats(tMin, tMax);
} catch (e) {
document.getElementById('info').textContent = 'Erreur: ' + e.message;
document.getElementById('stats').textContent = 'Erreur: ' + e.message;
console.error(e);
}
}
function updateMarker(idx) {
const p = points[idx];
if (!p || !marker) return;
marker.setLatLng([p.lat, p.lon]);
marker.setIcon(makeArrowIcon(p.heading || 0));
updateInfo(idx);
}
function updateInfo(idx) {
const p = points[idx];
if (!p) return;
const hdg = p.heading !== null ? `${p.heading.toFixed(1)}°` : 'N/A';
document.getElementById('info').textContent =
`[${idx+1}/${points.length}] ${p.t} | Lat: ${p.lat.toFixed(6)} Lon: ${p.lon.toFixed(6)} | Cap: ${hdg}`;
}
loadData();
</script>
</body>