Mirai Guide: planning a day backwards from the thing you want
A wake-up time derived right-to-left from sellout risk, and the historical corpus that calibrates it.
↗Notes from building the things above
Lab
Engineering notes from the work itself — engine architecture, rendering, physics, extraction pipelines, navigation, and localization.
Lab14
Newest first
Mirai Guide: a globe of where people came from, without tracking anyone
Three separate device identities, ~100 km cells snapped before signing, and a telemetry disclosure that gates the deploy.
↗Mirai Guide: serving an event crowd on one SQLite database
D1 is a single-primary SQLite with a serial write queue. The architecture question was never how to make it faster — it was how to make sure almost nothing ever talks to it.
↗Inside Mirai Guide: an offline-first event companion
How a loginless PWA, two Workers, and a hard binding-data rule keep a fan-run event guide trustworthy.
↗Mirai Guide: reading walkable floors from the map raster
Why booth-gap inference failed, and how color segmentation of the venue map yields a navigation grid for A*.
↗WMMD architecture: a hostable MMD runtime
Why the engine is split into layered Rust crates with hard dependency invariants, so the same code can drive an editor, an AR host, or an offline renderer.
↗WMMD rendering: a toon pipeline verified by golden images
Forward toon shading with WBOIT transparency, ESM shadows, SSAO and RT AO, IBL and bloom — and the headless snapshot infrastructure that keeps it honest.
↗Mirai Guide: turning crowd reports into a stock signal
Trust-weighted consensus with a recency half-life, and the stale-sold-out death spiral it exists to prevent.
↗Mirai Guide: one survival curve behind every answer
Collapsing three disagreeing shopping orders into a single function of time, so the route, the headline, and the leave time finally agree.
↗Mirai Guide: extraction with a human veto
The ingestion pipeline that turns approved public sources into reviewed structure — and why booth codes are immutable.
↗Mirai Guide: three languages without a translation CMS
UI catalogs that fail loudly, i18n columns for structure, and reviewed model translation for the catalog.
↗Mirai Guide: anchoring booths to venue maps
Vision-assisted map review that stores normalized coordinates and hashes — never the uploaded bytes.
↗Mirai Guide: modeling the goods queue
A three-phase queue model where the sellout clock, not register counts, reveals booth throughput.
↗WMMD physics: three backends behind one interface
Bullet as the MMD-faithful reference, a pure-Rust fallback, a clean-room PGS solver, and an XPBD cloth engine — swappable at compile time.
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