feat(own-ship): heading line, look-ahead, stale-GPS + Annapolis sim s…#22
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…cenarios
Implements the own-ship UX spec and fixes a pre-existing rendering bug.
Own-ship (web):
- Self-heal vector layers each fix. The plugin is built on the canvas `ready`
event (after the initial style.load) and the chart rebuilds its style with
setStyle({diff:false}), which drops plugin layers — so _ensureLayers never
effectively ran and the COG predictor never drew. The DOM Marker survived,
masking it. Now _ensureLayers() runs at the top of each _update (~1 Hz).
- Heading line: solid HDT line distinct from the dashed COG vector; the gap
between them shows leeway/set. Short fixed line at rest.
- Stale/lost GPS: a watchdog ages the last fresh fix (moved, or RMC/ZDA clock
advanced) into live -> stale (>6s, greyed, vectors dropped, amber pill) ->
lost (>20s, red pill). The boat freezes at the last fix, never vanishes.
- Rotate breaks follow like pan (guarded on originalEvent so our own bearing
holds don't self-break); pinch/wheel keeps follow.
Camera (chart-canvas): look-ahead offset — in course-/head-up the vessel sits
1/3 up from the bottom; north-up stays centred.
Simulator: named Annapolis scenarios (harbor, bay-crossing, bay-bridge,
anchorage, collision, river, sailing) with own-ship route-following; `sailing`
tacks with a varying leeway so heading != COG; `--drop-gps N` withholds position
fixes to exercise stale/lost.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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…cenarios
Implements the own-ship UX spec and fixes a pre-existing rendering bug.
Own-ship (web):
readyevent (after the initial style.load) and the chart rebuilds its style with setStyle({diff:false}), which drops plugin layers — so _ensureLayers never effectively ran and the COG predictor never drew. The DOM Marker survived, masking it. Now _ensureLayers() runs at the top of each _update (~1 Hz).Camera (chart-canvas): look-ahead offset — in course-/head-up the vessel sits 1/3 up from the bottom; north-up stays centred.
Simulator: named Annapolis scenarios (harbor, bay-crossing, bay-bridge, anchorage, collision, river, sailing) with own-ship route-following;
sailingtacks with a varying leeway so heading != COG;--drop-gps Nwithholds position fixes to exercise stale/lost.