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bc463188d5
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feat(offroute): Phase O4 — multi-mode cost functions (foot/mtb/atv/vehicle)
- Add ModeProfile dataclass for data-driven mode configuration
- Implement three speed functions:
* Tobler off-path hiking (foot)
* Herzog wheeled-transport polynomial (mtb/atv)
* Linear speed degradation (vehicle)
- Add WildernessReader for PAD-US Des_Tp=WA wilderness areas
- Mode-specific terrain friction overrides:
* Forest impassable for ATV/vehicle, high friction for MTB
* Wetland/mangrove impassable for all wheeled modes
- Trail access rules:
* Foot trails (value 25) impassable for ATV/vehicle
- Wilderness blocking for mtb/atv/vehicle modes
- Vehicle mode allows flat grassland/cropland traversal
- Memory optimization: limit entry points, constrain bbox size
- Update router to pass mode and wilderness to cost function
- Add vehicle to API mode validation
Validated all four modes with test route:
- foot: 0.46km off-network, 12.11km network, 89% on trail
- mtb: 0.47km off-network, 13.13km network, 90% on trail
- atv: 0.47km off-network, 12.81km network, 90% on trail
- vehicle: 0.46km off-network, 12.81km network, 89% on trail
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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2026-05-08 14:11:56 +00:00 |
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1a9dfc8f8d
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feat(offroute): Phase O3b — trail entry index, Valhalla stitching, /api/offroute endpoint
Phase A: Trail Entry Point Index
- Extract highway endpoints from idaho-latest.osm.pbf using osmium + ogr2ogr
- Store 740,430 entry points in /mnt/nav/navi.db (SQLite with spatial index)
- Entry points by class: service (271k), footway (152k), residential (146k),
track (111k), path (26k), unclassified (16k), tertiary (9k), secondary (4k),
primary (4k), bridleway (15)
Phase B: Pathfinder → Valhalla Stitching (router.py)
- OffrouteRouter orchestrates wilderness pathfinding + Valhalla on-network routing
- Queries entry points within 50km (expanding to 100km if needed)
- MCP pathfinder routes to nearest reachable entry point
- Calls Valhalla pedestrian/bicycle/auto costing for on-network segment
- Returns GeoJSON FeatureCollection with wilderness + network + combined segments
Phase C: Flask Endpoint
- POST /api/offroute with start/end coordinates, mode, boundary_mode
- Returns GeoJSON route with per-segment metadata and turn-by-turn maneuvers
Validated: 42.35,-114.30 → Twin Falls downtown
- Wilderness: 0.5km, 9min | Network: 36km, 413min | Total: ~421min
- 21 turn-by-turn instructions, segments connect at entry point
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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2026-05-08 13:44:34 +00:00 |
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