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v2.1.0 — finish and detail

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@OlegG90 OlegG90 released this 06 Sep 15:14
· 92 commits to main since this release
v2.1.0
7a24839

Finish and detail. The movement was already correct; this release is about
what the eye gets — and about the render loop the lesson layer had quietly
made expensive.

Added

  • The tourbillon cage in detail — plates extruded with a bevel, pillars
    with caps and screws, timing screws on the balance rim, and pallet stones
    as a physical material with transmission, so the rubies read as stones.
  • The hairspring is a body, not a line — a swept tube with a Breguet
    overcoil, studded to the cage at one end and the balance at the other.
  • Winding you can read — a thickened ratchet, a 36-ridge knurled crown
    with bevels, cap and gasket, and an extruded click lever with its ruby and
    spring. Bevel-gear teeth taper toward the apex while preserving the cone
    invariant.
  • Two cage controls in free mode — cage opacity and top-plate
    visibility, so the escapement inside can actually be seen.
  • A spot light on the cage: blued steel and rubies stand out without blowing
    out the brass.

Fixed

  • The render loop allocates again — as in, no longer. readouts() ran
    every frame and rebuilt a dozen objects: 807 B per frame, 2.8 MB a minute,
    against a zero-allocation property this codebase had been measured to
    hold. Mechanism constants are now computed once, rounding no longer goes
    through toFixed, and the panel passes a reusable buffer. 807 B → 23 B
    per frame, 3.6 µs → 0.06 µs.     Free mode skips the lesson update entirely:
    it is the pre-lesson app and should not pay for the lesson.
  • The side view kept its own copies of the mechanism's dimensions. The
    cage radius, the central-seconds module, hand lengths and the differential
    radii were typed into section.js, contradicting the promise in that
    file's own header. Each is now derived from the module that owns it —
    which surfaced a real error: the balance rim was drawn at 1.5 where the
    mesh has 1.95.
  • Dimmed material clones ignored a later wireframe toggle. Turning the
    wireframe on in free mode and returning to a station left the dimmed parts
    solid while the highlighted ones were wireframe.
  • Two Ukrainian strings in the test suite closed their quotes early, so Vite
    could not parse the file and half the suite silently never ran.

Removed

  • createHighlighter().dispose() — dead code implying a managed lifecycle
    the app does not have.

65 tests. Kinematics verified with a scene-graph diff against the previous
build: 704 meshes across four states, zero differences.

Live: https://olegg90.github.io/watch-simulator/

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