trails/openspec/changes/planner-route-interactions/specs/route-splitting/spec.md
Ullrich Schäfer b080a15fb1
Add route interactions: click-to-split, drag-to-reshape, colored route rendering
- Enrich BRouter response with per-point 3D coordinates and segment boundary
  tracking (EnrichedRoute interface)
- ColoredRoute component: plain, elevation gradient (green→yellow→red), and
  surface color modes with invisible wide polyline for click targeting
- Click-to-split: click on route polyline inserts waypoint at nearest point,
  mapped to correct segment via boundary indices
- MidpointHandles: draggable CircleMarkers at route segment midpoints for
  reshaping, hidden below zoom 12, opaque on hover
- Color mode toggle (select) synced via Yjs routeData
- i18n keys for color mode labels (en + de)
- Unit tests for segment boundary tracking (13 tests)
- E2E tests for enriched route response and color mode toggle

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-03-26 21:15:55 +01:00

886 B

ADDED Requirements

Requirement: Insert waypoint by clicking on route

The Planner SHALL allow users to insert a new waypoint by clicking on the rendered route polyline.

Scenario: Click on route between two waypoints

  • WHEN a user clicks on the route polyline between waypoint 2 and waypoint 3
  • THEN a new waypoint is inserted at position 3 (between the original waypoints 2 and 3) at the clicked location, and the route recomputes

Scenario: Waypoint snaps to route

  • WHEN a user clicks near the route polyline
  • THEN the new waypoint is placed at the closest point on the existing route geometry, not at the raw click position

Scenario: Split syncs to other participants

  • WHEN a user inserts a waypoint by clicking on the route
  • THEN all other participants see the new waypoint appear in the waypoint list and on the map via Yjs sync