Draped ground polylines and clamped billboards land on the top of the
Google Photorealistic 3D mesh, so on a street under trees or an overpass
the coverage seemed to float at roof height.
At street zoom on Google 3D (camera below 1,400 m, back above 1,800 m)
the core switches to a `terrain` surface mode. groundCast.js samples the
existing terrain service on the ground-floor grid (0.001 deg), interpolates
bilinearly and adds 2 m; Mapillary lines become plain polylines at those
heights, and cones and the position marker stand on the street, so the
mesh hides what is behind buildings and trees. A tile draws draped first
and swaps to its cast lines once the heights arrive, keeping the old lines
until the new primitives are ready. Lookups are once per tile and aborted
when the tile is dropped; a geoid fallback counts as unknown and leaves
lines draped. Other map stacks and higher views are unchanged.
Providers get getSurface() and groundCaster in their context and an
optional setSurface(mode); getUIState() exposes `surface`. The QA gate
checks draped on Esri and terrain on Google 3D.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Street Level is now a provider-neutral layer modelled on the iD editor's
photo overlay. The core owns what every imagery provider shares: the
enable state and a switch per provider, the imagery filter (360°/flat and
captured-since in relative days), one click handler routed by pick prefix,
one viewer host that mounts whichever provider's viewer adapter owns the
open image, the position marker, camera follow, one on-globe credit per
active provider, and share-link parameters (one bit per provider plus the
filter). Providers implement the contract in registry.js: coverage,
sequences, nearest-image lookup and a viewer adapter emitting a common
pose. Mapillary is the only registered provider; Google Street View,
KartaView and Panoramax slot in beside it.
Panel: a PROVIDERS chip row (one chip per registered provider, keyless
chips read as errors), relative-day SINCE options, a provider-neutral
caption whose link label follows the provider, and no vendor mark in the
header. The panel inner is a rail scroller like CCTV's.
Tests cover the registry, params codec, filter, pick router, UI-state
composition, the provider definition and coverage-tile decoding; the QA
harness switches the provider off and on and checks the filter.
Co-Authored-By: Claude Fable 5.1 <[email protected]>
