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trails/openspec/specs/map-display/spec.md
Ullrich Schäfer 7dc4fdec3b
Archive osm-overlays change, sync 4 specs to main 
Synced to main specs:
- osm-poi-overlays (new): POI overlay requirements
- osm-tile-overlays (new): tile overlay requirements
- map-display (updated): added overlay layer entries
- planner-session (updated): added overlay/POI sync

Archived to openspec/changes/archive/2026-04-11-osm-overlays/.
All 4 artifacts complete. All 45 tasks complete.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-04-11 02:45:32 +02:00

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MODIFIED Requirements

Requirement: Base layer switching

The map SHALL support switching between multiple base tile layers, and SHALL support toggling overlay tile layers independently.

Scenario: Switch to OpenTopoMap

  • WHEN a user selects "OpenTopoMap" from the layer switcher
  • THEN the map tiles change to topographic tiles from OpenTopoMap

Scenario: Available base layers

  • WHEN a user opens the layer switcher
  • THEN the options include OpenStreetMap, OpenTopoMap, and CyclOSM

Scenario: Available overlay layers

  • WHEN a user opens the layer switcher
  • THEN overlay checkboxes are shown for Hillshading, Cycling Routes, Hiking Routes, and MTB Routes

Scenario: Toggle overlay

  • WHEN a user checks an overlay checkbox in the layer switcher
  • THEN the overlay tiles are rendered on top of the current base layer