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maptool/TODO.adoc
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randy 8d090b0774 Cache the weather forecast for offline fallback
Radar flyout now also shows a 3-day Open-Meteo forecast (free, no API
key) for the map's current center. Radar frames and the forecast fetch
independently — one being unreachable doesn't hide the other. The last
successful forecast is cached in localStorage and shown (with a
"cached from" note) when the live fetch fails, so there's still
something useful once actually offline.

Radar tile images themselves aren't cached — that needs a Service
Worker, left as a separate follow-up (see TODO.adoc).
2026-09-09 09:42:10 +02:00

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= TODO — implementation ideas
Ideas for offline use in a camper van. Implement incrementally, grouped by topic.
The local server has access to both the vehicle's hardware and offline data — the
vision is to grow it into a complete offline control center: resources, data, and
independence from connectivity.
== Offline data and cartography
* [ ] Offline vector tiles (PMTiles/MBTiles) for Europe/world via Planetiler or MapTiler
* [x] Shaded relief / DEM layer — hillshade toggle in the sidebar, sourced from public Terrarium tiles online; reads `data/terrain.pmtiles` for offline if one's been generated (see docs/development.adoc), otherwise the toggle is online-only for now
** [ ] Terrain slope readout for parking (numeric, not just visual shading)
* [ ] Contour lines from OSM for hikes and mountain passes
* [ ] Overpass/OSM scripts to extract POIs (drinking water, dump stations, LPG, public toilets, laundromats, shops, springs)
* [ ] Import Park4Night / iOverlander / Freecampsites data
* [ ] Kiwix/ZIM offline Wikipedia linked to POI GPS coordinates
* [x] Cache weather forecast when temporarily connected — Open-Meteo 3-day forecast in the Radar flyout, last successful fetch cached in localStorage as a fallback when offline
** [ ] Cache the radar tile *images* too, not just the forecast text — needs a Service Worker (own bigger task: registration, cache strategy, invalidation); app has HTTPS everywhere (reverse proxy, incl. the in-van local server) so it's viable, just not done yet
== NPS visual style
* [ ] Map Park4Night/OSM place types to NPS pictograms (campground, primitive camp, drinking water, dump station, viewpoint, picnic table) for instant recognition without reading text
* [ ] Restyle popovers, side panels, and point detail views after the NPS Unigrid layout system (Massimo Vignelli) with Frutiger/Rawlinson Roadside-style typography
** [x] Top black banner (full width): "MAPTOOL" on the left, live map-center coordinates in the center, offline-data status dot on the right, white sans-serif type — DEM elevation and a hamburger menu skipped (no DEM layer yet; sidebar isn't mobile-collapsed, so nothing for a hamburger to reveal)
** [ ] Point detail/sidepanel: black header banner with white location name and an NPS pictogram in the corner; amenities (water, waste, power, slope) shown as a pictogram grid, no extra text; action buttons for "route here" (Valhalla), "start leveling", "save offline"
** [x] Filter panel as a "Unigrid Matrix" — an icon grid to toggle categories on/off, styled like the legend on an official NPS paper map, instead of plain dropdowns
* [ ] Custom vector style (MVT/MapLibre) using the NPS color palette — muted natural tones for forests, water, and contours — so POIs and routes stand out at high zoom
** [ ] Landuse & protections: distinct styling for national parks, nature reserves (translucent green/gray-green), military zones, and private land (important for wild camping)
** [x] Elevation-tinted terrain — a `color-relief` layer (hypsometric tint, this app's own green→brown→gray palette) under the hillshade layer, same "Terrain shading" toggle
** [x] Road hierarchy: clearly distinguish paved roads from unpaved/gravel/track — critical for knowing if the camper can get there
== Main menu reorganization (4 modules)
* [ ] Explorer: place filters (Park4Night + OSM layers: water, waste, LPG, showers); map layers (contours, hillshade, satellite cache)
* [ ] Navigation & route: offline router (Valhalla) with vehicle dimensions (height, weight, width); route elevation profile and isochrones
* [ ] Offline hub: manager for downloaded PMTiles (country vector maps); downloaded Wikipedia archives; cached radar and weather
* [ ] Camper & HW: level gauge (wheel-chock leveling); solar calculator (sun path on the map); telemetry (Victron / Home Assistant)
== Custom layers & data
* [ ] GPX/KML/GeoJSON drag-and-drop import (Wikiloc, Komoot, own GPX tracks), auto-styled in the NPS visual language with a generated elevation profile
* [ ] User overlay: offline drawing of custom points/polygons with notes (e.g. "turning space for a long vehicle", "narrow gate", "good swimming spot")
* [ ] Offline satellite tile caching (e.g. ESRI) for a selected route area — key for judging surface quality and obstacles when wild camping
== Nice to have (later)
Deprioritized for now — revisit after the sections above land.
=== Vanlife features
* [ ] Offline routing (Valhalla/OSRM) with vehicle parameters (height, weight, width)
* [ ] Solar calculator — sun path for location/date, shadows from surroundings, camper orientation
=== HW integration
* [ ] Level gauge from IMU (ESP32/RPi) — camper tilt, wheel-chock leveling calculation
* [ ] Victron/Home Assistant via MQTT or WebSocket — battery SoC, tank levels, temperatures
* [ ] Plot GPS track with historical battery/speed data