Six thumbnails is enough to rank sixty-eight scenes and far too few to study
one. Worse, six songs at one seed each confounds the two inputs: a scene whose
frames are interchangeable might be ignoring the identity or ignoring the music,
and the library gallery cannot say which.
So a scene's name in the gallery now opens it on a grid — songs down, seeds
across, up to every song in the bank by ten draws. Buttons pick the size and
walk onto a fresh block of seeds, which is a much better answer to "is it flat
or was that ten unlucky rolls" than staring at the same ten. The state lives in
the URL, so every button is also a back button.
Three scores rather than one, and the two new ones are the diagnosis: ACROSS
SEEDS is the same song with a different draw, so low means the scene ignores the
identity; ACROSS SONGS is the same draw against different music, so low means it
ignores the song. They point at different fixes. The closest pair is outlined,
because at 170 cells no eye is finding it.
The first version hashed the song name into the seed so a column would not be
one roll repeated down the grid. It reads better and measures nothing: with the
seed varying on both axes the two scores are the same comparison, and they came
back within 0.001 of each other for every scene tried. A column holds its seed
fixed now, which is what makes it attributable to the music — and the scores
separate, with the seed moving every scene tried more than the song does.
170 cells in 9s. The songs are the slow part and are analysed one at a time so
the count moves, then cached for the session.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Two devices that were built, wired up, and doing nothing.
OVERLAYS. buildStack gated layering on `surfaceOf(m) === 'composable'`, and
no scene in the library declared `surface` — so the only thing that could ever
sit on top was the one scene declaring `role: 'accent'`, and the overlay roster
excluded accents by construction. Empty intersection, every time: 0/144 stacks
carried an overlay. Every layered frame in every song was the same particle
field.
Labelled the library from the phase 12 coverage gate rather than by eye: the
37 scenes painting under 30% of the frame are composable. Particle Field loses
its privileged slot and becomes one of them, keeping only `background: false`,
which is the honest part — points in empty space cannot carry a section alone.
The reserved accent slot is gone; one roster, two passes at it. 1 distinct
overlay scene becomes 27, and the rate lands at 34% of stacks after trimming a
base chance that had been tuned while the branch was dead.
THE CAMERA. framing.shift moved the frame by a median of 0.029 of a half-frame
at a fresh random angle every shot, so successive offsets cancelled and the
median jump at a cut was 0.014. Present in every frame, visible in none.
look/Camera.js is the director's camera department: the story says tension,
order and which act a section is in, and this turns that into where the frame
looks and how it travels there. Each director names a camera. Jump distance
follows tension and act, speed follows energy, and the curve is one of four.
Cuts choose between reframing and matching, so two scenes can still read as one
place. Median offset 0.190, median reframe 0.135, and 94% of shots now move
during the shot rather than only at the cut.
Four new gates, each with a FLOOR — the device this replaces passed every
existing check while doing nothing, because the only bound was a ceiling.
Also lands the in-progress Epic 4 story layer it builds on: Story.js, phase 13,
and the direction statistic.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
HOWTO-visualizers.md gets a scene working. Nothing said how to make one look
different from song to song, which is the thing the library is worst at and the
thing every measurement this epic has been about.
Written as evidence rather than advice: each claim carries the number behind it,
so a later change can contradict it. Several already contradict things believed
earlier in the same week.
It records the failures at least as carefully as the wins, because they were more
informative and each looked obviously right beforehand — effects as parameters
inflating a score without changing a picture, concentrating disturbance instead
of adding it, the roster-size theory that a direct sweep found to be nothing, and
reading a form as a metric rather than drawing it. It also documents what the
descriptor cannot see, since half of "why is my score low" is there: brightness,
colour, rotation, quality, and layout for anything that fills the frame.
And it is explicit about which numbers to trust. Direct render comparisons have a
noise floor of zero; aggregate ratios swing enough to have produced four
withdrawn conclusions in one epic.
Ongoing by design, with the open questions listed: coupling has never moved off
zero, fixed-geometry scenes have no known route to variety, and the 0.04 bar was
set against scores that were depressed by a measurement bug.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Sixty-five visualizers, six renders each, one per song — each carrying that
song's whole identity: its cast, ink, lattice, palette and a fresh parameter
draw. Side by side, a scene that cannot be changed by the song is obvious in a
way no aggregate could show, which is the complaint this answers.
It scores as well as shows. Each row carries the mean structural distance
between its own six frames, on the same descriptor the variety harness uses and
with colour excluded, so six palettes cannot disguise one image. Sorted
least-varied first, because browsing sixty-five scenes hunting for the
repetitive ones is precisely what a sort order should do for you.
The result names names. Thirteen scenes barely change across six songs, and they
fall into two groups that were already known separately. The ink-only
migrations — Analog Wow, Halftone Misprint, Pitch Shatter, Block Mosh, Scan
Tear — are the shallow tier flagged in MIGRATION.md, where the whole migration
was one posterisation. And Moiré Grid, Isometric Blocks, Quasicrystal, Truchet
Fold, Voronoi Shatter and Apollonian Gasket are the structural twin cliques the
library sweep found weeks of measurement ago, arriving here by a completely
different route: the sweep compared scenes to each other, the gallery compares a
scene to itself, and they agree on the same offenders.
debug.html collects the tools, since there are now enough of them that knowing
which to open is its own problem. It also carries the two things a newcomer
would otherwise learn the hard way: which measurements are safe to steer by
(direct render comparisons) and which are not (aggregate ratios), and what to do
when a page renders perfectly and does nothing.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
