f81d5218d498a4f8480f9fe54e8c0812cd9bb78f
4 Commits
| Author | SHA1 | Message | Date | |
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 karti
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f81d5218d4 |
feat: SFO, LAX, both bridges, a road that reads as a road, and aeroplanes that move
**The aeroplanes were stuck because the wire could not describe motion.** `WireAircraft` carried position, altitude and heading and nothing else, so the client could only interpolate between the last two observations: every aircraft replayed a segment it had already flown, arrived at the newest known point, and sat still until the next poll landed five to fifteen seconds later. The feed had the missing numbers the whole time and the server threw them away. Sampled live from `api.adsb.lol/v2/point` while writing this — `gs` ground speed, `track`, `baro_rate`, plus `r` registration and `t` type designator. They are on the wire now in SI, aircraft dead-reckon along their own track and correct toward the truth when a fix lands, and the click card an anonymous visitor gets says "B739 · N68834". That last part is the enrichment FR24 was wanted for, obtained from an ODbL feed we may actually republish. **SFO and LAX exist.** A new `engine/airports.ts` composes an airport from runways, taxiways, aprons and terminal masses, with markings drawn on a canvas rather than modelled; the pattern of the runways is what the eye recognises from altitude, long before any building does. SFO is the two crossing pairs on the bay fill; LAX is the four parallels either side of the terminal horseshoe, plus the Southland fields under the traffic that actually flies there. **The Golden Gate and the Bay Bridge are those bridges.** One kit in `engine/bridges.ts`, because a suspension bridge is a repeated tower, a catenary main cable, a series of hangers and a deck — so both are configurations rather than two private implementations. The Bay Bridge carries the real 2013 topology: two suspension towers west of Yerba Buena, one east, then the piered causeway. The freeway stopped being a wireframe overlay and became a road, with shoulders, a median, and lane markings as texture. **And the board got faster while all of that landed.** California went from 728,744 triangles and 562 draw calls to 391,169 and 371 — headroom from 2.8% to 47.8%. The Bay Area board is 506,550 triangles lighter than before this work. Two things paid for it: - `transmission: 0.08` on the aircraft cockpit glass. three.js runs a full transmission backdrop pass whenever any rendered material has transmission above zero, re-drawing the entire opaque scene into a second target every frame — so the city was rendering terrain, every block and every freeway piece TWICE. Measured by patching only that number in a copy of the built bundle: 703,267 tris / 562 draws with it, 398,608 / 371 without. The material was already `transparent: true, opacity: 0.86`, so it was buying nothing. - Flatness-adaptive terrain LOD, which collapses runs of lattice cells wherever the height and colour agree with the quad replacing them. The coastline is provably untouched — a patch collapses only when every point is on land and agrees about `park` — and a test asserts the drawn footprint matches the cell-by-cell area to 1e-6. `createTerrain` got *faster*: the vertices it stops emitting cost more than the flatness scan costs to run. **The budget now watches the boards this was built on.** There was no `bay-area` or `socal` cell — so SFO, LAX and both bridges all landed in frames nothing measured, which is how a cap you do not have looks from the inside. Both are in the matrix now with caps set from measurement, and the rationale lives in the harness because JSON cannot hold a comment. Two known defects ship with this, both recorded in TODO.md rather than hidden: - `bay-area.desktop` drops about one frame in twenty (p50 16.7, p95 33.3). It is desktop-only and not fill rate — mobile runs the same 2.26 M triangles at a comparable pixel count and holds 16.7 flat — which points at the 2048 shadow map desktop uses against handheld's 1024. Measured at the commit before this work with the same harness: identical p95 33.3. Pre-existing, and invisible until the cell existed. - The aeroplane glyph is still about 1.5x the Golden Gate's main span at chapter zoom, down from 2.5x. `GLYPH_MAX_SCALE` is 52 because the raw scale at the far end of the California orbit is 51.0 at a 60-degree field of view, and 26 — tried first — put the glyph at 0.0123 of the frame against the 0.012 where the wings stop resolving. The real fix is to clamp against the camera's focus distance rather than the aircraft's, which is a signature change. Tests 1020 -> 1137. Typecheck, build, eight budget cells, no-binaries, provenance, zero-config boot, dependency licences, arena source hashes and the UI smoke across two viewports and two access tiers all pass. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> |
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 Karti Tripathi
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44c5a79424 |
SoCal, the whole bay, a moon, and gates that actually run
Six agents in parallel, and the two city packs independently reported the same blocker: `focusRegions` and `coarseFactor` existed on the `City` type and nothing implemented them. Uniform lattices would have been 2.9M points for Southern California and 3.7M for the expanded bay. Both packs were unloadable as written. `buildAxis` is the answer, and it is honest about its limits: refinement is per axis, not per rectangle, so a focus region sharpens its whole row *and* its whole column. Two regions at opposite corners refine nearly everything between them. Measured, not guessed — the bay went 0.53M points with one region and 1.64M with three, for detail nobody is looking at from a board this wide. One region each, coarse factor ten, and the builds land at 3.8 s and 2.3 s. Then three things that were only ever right because San Francisco was the only city. `maxDistance: 340` and a 170-unit shadow box were constants tuned for a 230-unit board; the bay is 1003 units across and the camera physically could not retreat far enough to frame it. Fog distances were scene units pinned to the same assumption. And `minVisibilityM` defaulted to 4.5 km of honest weather, which over ninety-four kilometres of bay correctly hides three quarters of it — the night view was a black rectangle for a completely reasonable reason. All three now derive from the board. The moon is a real ephemeris and its light is a deliberate lie: 1.15, against a physical ratio of one to four hundred thousand. What is being reproduced is what a moonlit night looks like on a screen in a lit room. The CI gate caught itself, which is the part worth keeping. Port 8431 was already held by a server from an earlier session, so the boot check polled a healthy stranger while the process it started died on EADDRINUSE. It now refuses to run rather than pass. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> |
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Karti Tripathi
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36471bbad7 |
Tera, because Simulate was already spoken for
Two names in this repo were quietly colliding with things that already ship. `lumbridge-simulate` is a Rust crate in the private monorepo — the Governor's memory-admission simulator, with a public product page — and in its vocabulary a "Scene" is a set of models, not a three.js scene. Naming a 3D engine the same thing would have put two different meanings on both words at once. Meanwhile world1.lumbridgecorp.com has been serving <title>Tera — Lumbridge</title> since before any of this: the world already had a name. So the map view is Tera, the interiors product is Spaces, an Office is one building's interior and a Space is a room inside it. ARCHITECTURE.md opens with that table now, because the next few thousand lines all depend on it. The Phaser 2D world comes down rather than being migrated. Its tileset is precisely what stopped it being open-sourceable, and there are no real users to strand. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> |
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Karti Tripathi
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67f8df8d53 |
Lumbridge Simulate Engine — the city, and the licence it can actually ship under
LSE is the third of the three, beside lumbridge-compute and lumbridge-bench: a 3D engine for walkable places. This first commit is the outside of the world — San Francisco — plus the seams the inside will attach to. The engine renders a City and a list of Markers and knows nothing else. It does not know markers are usually companies and it will never learn that "rejected" is red; that mapping lives in an adapter. Which is what lets one renderer serve a private map, a public one, and a self-hoster with no Lumbridge account, none of them a fork of the others. Three things were designed around the licence rather than discovered after it, because each one is a promise Apache 2.0 makes that is easy to break by accident. No trademarks in the repo — logos are fetched at runtime, and public/logos/ is gitignored. No OpenStreetMap-derived coordinates, which is why every coastline in cities/sf.ts was traced by hand: Nominatim output is ODbL, share-alike, and would attach to the whole pack. And no FlightRadar24 client — their terms forbid scraping and redistribution, so flights are an interface with a simulator and open community ADS-B behind it. The privacy constraint and the licence constraint turned out to want the same thing. Geocoded company positions and pipeline status both stay behind Workie's API; the open repo holds the city and the renderer. The tempting shortcut — commit an sf-companies.json — breaks both at once. Ported out of Workie, where a 3D city engine had no business living. Workie's /live is deleted rather than deprecated. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> |