0c5b0a8d4d
Three lessons worth more than the scenes: a slow axis has to move a large low-frequency area or the camera's own drift beats it, whole-frame luminance on the kick is the strobe the flash gate exists for and it arrives by accident, and a style trait expressed only as grain measures as no style at all. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
109 lines
6.9 KiB
Markdown
109 lines
6.9 KiB
Markdown
# Twenty more scenes
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The library sat at 42 — seven per family, evenly. Even spread is not the same as
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useful spread: casting in `look/Personality.js` disqualifies any scene that does
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not honour *all* of the track's signature traits, so the pool a given track draws
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from is much smaller than the shelf count suggests. `space` and `shape` are the
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thin traits, and they are where a new scene is worth most.
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So: twenty scenes, roughly three or four per family, weighted towards `space`
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(8 of 20) and `shape` (7 of 20), and each one written against a named neighbour
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it must not look like. That second column is the real spec — "no two scenes
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render the same image" is a gate with a numeric floor, and a scene that cannot
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say what it is *instead of* does not exist yet.
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Procedure per scene is `.claude/skills/build-visualizer/`: scaffold, write the
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`scene()` body, `npm run lint:scenes`, `checks.html?scene=…`, then the full suite
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before the batch commit.
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## flow
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| # | scene | traits | what it is | not like |
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|---|---|---|---|---|
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| 1 | Rain Column | camera, space, style | falling sheets of rain in depth layers, sheared by wind | Smoke Column rises and diffuses; this falls and stays discrete |
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| 2 | Magnet Lines | shape, camera, style | iron-filing field lines around drifting poles | Curl Flow advects noise; here the field is solved, not sampled |
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| 3 | Kármán Street | shape, camera, space, style | vortices shedding off a fixed body, drifting downstream | Vortex Drift spins the whole frame; this has one still obstacle and a wake |
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## organic
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| # | scene | traits | what it is | not like |
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|---|---|---|---|---|
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| 4 | Turing Bloom | camera, style | reaction–diffusion spots and stripes, grown in feedback | Ink Bleed spreads and stops; this reaches a living equilibrium |
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| 5 | Mycelium Web | camera, space, style | threads creeping over a dark substrate, nodes lighting where they meet | Flora grows upright and symmetric; this is flat, branching and lateral |
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| 6 | Scale Mosaic | shape, camera, style | phyllotaxis of overlapping scales, breathing | Cell Divide splits; this tiles a surface that never divides |
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## minimal
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| # | scene | traits | what it is | not like |
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|---|---|---|---|---|
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| 7 | Pendulum Trace | camera, style | one harmonograph curve drawn into a slowly decaying trail | Silk Ribbon is a wide ribbon; this is a single hairline and its ghost |
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| 8 | Contour Map | camera, space, style | sparse topographic contours of a slow height field | Horizon Lines is a parallel bundle; contours are closed and nested |
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| 9 | Shoji Grid | shape, camera, style | backlit paper panels with the signature form cut out of them | Moiré Grid interferes; this has four or five panels and holds still |
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| 10 | Balance Stack | shape, camera, space, style | a few forms stacked on a horizon, long shadows | Salt Flat has one distant object; this one is near and about to fall |
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## structural
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| # | scene | traits | what it is | not like |
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|---|---|---|---|---|
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| 11 | Suspension Span | shape, camera, space, style | cable curves and towers passing overhead | Girder Lattice is a truss field; this is two curves and a rhythm of hangers |
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| 12 | Stairwell Descent | camera, space, style | a recursive stairwell seen straight down | Gate Corridor moves through gates; this falls through floors |
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| 13 | Aqueduct March | shape, camera, space, style | receding arches, tiered | Pylon Grid is open frames; arches are solid and carry a skyline |
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| 14 | Data Aisle | camera, space, style | two racks of indicators receding to a vanishing point | Neon City is exterior and vast; this is interior and close |
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## geometric
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| # | scene | traits | what it is | not like |
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|---|---|---|---|---|
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| 15 | Voronoi Shatter | camera, style | drifting Voronoi cells, edges lit, re-seeding on phrase lines | Truchet Fold is a regular grid; these cells are irregular and move |
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| 16 | Apollonian Gasket | camera, style | circle-inversion packing, infinitely nested | Quasicrystal is additive interference; this is exact recursive geometry |
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| 17 | Isometric Blocks | shape, camera, style | an isometric field of extruded blocks rising on band energy | Floating Geometry drifts free; this is a solid, gridded, lit surface |
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## glitch
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| # | scene | traits | what it is | not like |
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|---|---|---|---|---|
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| 18 | Halftone Misprint | camera, style | CMY halftone screens, misregistered | nothing else in the library draws dots |
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| 19 | Droste Feedback | camera, style | recursive zoom-and-rotate video feedback around a small motif | Time Smear translates; this scales, so the image eats itself |
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| 20 | Analog Wow | camera, style | tape warp: horizontal wobble, chroma bleed, dropout streaks | Scan Tear and Block Mosh are quantised and blocky; this is continuous and wet |
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---
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## What landed
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All twenty, in six commits, each batch gated before it went in. The library is
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at **62 scenes**: flow, organic, geometric and glitch at ten each, structural and
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minimal at eleven. `space` went from 20 scenes to 28 and `shape` from 21 to 28,
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which was the point — those are the traits that decide whether a track has
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anything to cast.
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Three things came out of the build that are worth keeping:
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**A slow axis needs a large, low-frequency area, not a detailed one.** Phase 11
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compares ten-second averages, and the camera's own drift moves that average by
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0.01-0.02 on any high-contrast image. An axis that changes line count, drop
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density or tier count loses to it; one that changes a wake's width, a colony's
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extent, a tide level or a deck's height beats it. Seven of the twenty declare an
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axis. Six do not, and each of those files records the candidates measured and
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what they scored — Turing Bloom, Voronoi Shatter, Droste Feedback and Analog Wow
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because a feedback or re-cutting scene's own history moves the average further
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than any parameter can, Contour Map and Balance Stack because the frame is too
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empty for anything in it to out-move a slow pan.
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**Two ways to strobe a whole frame, both found by the flash gate.** Driving block
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heights off the low end made every tower in Isometric Blocks grow together — a
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frame-wide luminance cycle on the kick, 4/s. A hard recursion cutoff in
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Apollonian Gasket popped a whole generation of discs in and out as the fold
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crossed it. Local terms and a faded cutoff fixed both.
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**Style expressed only as grain is not style.** Six of the twenty first shipped
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with a style response the render gate measured at 11-24 out of 255 — the Side
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Quest 1 complaint, reproduced from scratch. Putting the track's line weight and
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edge softness into the actual subject (the dot, the ring, the seam, the course,
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the band boundary) took them to 86-255.
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One check changed: Phase 4's transition control is the sum of the two adjacent
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shots' motion rather than the larger of them. See the commit; the short version
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is that a dissolve has both stacks live and a nonlinear blend of two moving
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stacks moves more than either alone, so the old control was reading its own
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denominator once the library had calm scenes in it.
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