From a five-lens IC8 review (correctness, security, tests with mutation
testing, performance, UX):
- P0: over Paris at 12–60 km the unsimplified z10–z12 lines sent ~2M
points to Cesium's ground-polyline builder (gigabytes of geometry; the
tab hung). decode.js now simplifies lines (Douglas–Peucker, 4 tile
units: 6–10% of the points), and lineCoverage gains an opt-in point
budget (`maxPoints`, 10,000 a tile for Panoramax).
- Decoded coverage tiles are kept (KartaView's tile cache moves to the
shared tileCache.js); a sequence's z15 picture lists are kept and load
on their own connection; cones know their tiles from the start of a
load, so a picture opening meanwhile re-centres them and ‹ › no longer
restarts the load.
- The HD panorama loads only for the expanded viewer (a docked one on a
dense screen asked for 3 MB originals) and is aborted when another
photo opens; picture files over 48 MB or 16,384 px are refused; a
bitmap no renderer took after a context loss is closed.
- A nearest lookup survives one of its two searches failing; only a
timeout is retried; offline reads as unreachable; Retry-After is
capped at five minutes; the search box stays on the map at ±180°;
cones near both edges of a narrow (high-latitude) tile read both.
- Every producer is credited (app and photographer); with none to name,
the caption says "via <instance>" rather than crediting the host.
- Esc anywhere in the docked viewer (toolbar, caption) clears the
sequence before the panel takes it. A filter that hides every density
dot says so; wording aligned ("coverage", "photo").
- Tests for every surviving mutant (Esc consumed, keepOrder and dot-size
wiring, licence in the core, limiter aborts, radius floor, bbox corner,
first-producer-only, byte and size caps), a limiter test, and a gate
fixture that answers box searches and leaves out pictures facing away;
the gate now clicks over the other sequence's pictures, so only the
line click's own-sequence lookup can pass.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Panoramax, the open federated street-level commons, registers beside
Mapillary, Google Street View and KartaView. Its meta-catalogue
(api.panoramax.xyz) is keyless and CORS-open, so it runs in the browser:
- coverage from its vector tiles: sequence lines at z11–14 below 30 km
(longest first under the per-tile cap), and above that the grid layer's
density cells as binned points, not counted as sequences;
- a click on a line opens that sequence's picture nearest the click
(STAC search, any direction), without moving the camera, then any
sequence's if it has none within 50 m; the 360° and since filters go to
the lines and to the API;
- cones from the z15 tiles' pictures layer around the open picture
(~110 bytes a picture, against ~7.5 kB for a STAC item), re-centred when
a picture opens outside them; ‹ › follow the picture's prev/next links;
- the caption names the author (not an account named by an email
address) and the picture's licence (StreetPose `license`), and links to
the picture in the Panoramax viewer; the globe credits Panoramax.
KartaView's viewer becomes the shared photoViewer.js (flat <img>, 360° on
panorama.js, ‹ ›, keyboard, pinch, context loss), driven by a per-provider
PhotoSources table; the request limiter moves to limiter.js. Panoramax shows
the 2,048 px SD derivative and fetches the HD original only when the viewer
is wide enough, once, shrunk while it decodes (never above 8,192 px).
Orange #ff6f00 (Panoramax's own), off by default, share option
0.m.0_0.r.panoramax-1. The MCP panel allows the meta-catalogue and the
biggest instances. Tests: policy, decode, source, viewer, provider, and a
Panoramax fixture in the hermetic browser gate.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
