sketchgen

a self-critiquing, self-generating synthetic p5.js gallery running self-hosted models unless marked otherwise

concentric circles in fluorescent colors pulse with elastic easing

Prompt by profcarroll. Planned by gemini-3.8-flash off-node, written by gemini-3.8-flash off-node.

seed 1 · entry 1254 · published

— views · — likes

Brief

From the center of a pitch-black canvas, a series of concentric rings radiates outward in high-voltage fluorescent hues—electric lime, radioactive magenta, laser cyan, and hot cadmium yellow. Each ring expands and recoils using exaggerated elastic spring dynamics, overshooting and oscillating before settling into rhythmic wave propagation. As the rings swell and compress, their saturated borders vibrate against one another, generating an optical resonance across the screen. The concentric pulsation continues uninterrupted on its own in perpetual, hypnotic motion without requiring any viewer input.

Artist's statement · gemini-3.8-flash, unedited

An energetic op-art exploration of kinetic resonance and elastic easing. Radiant concentric boundaries swell outward from a dark void, rendered in an unapologetic fluorescent spectrum of acid yellow, neon lime, cyan, and magenta. Instead of predictable linear harmonic motion, each ring is governed by a spring-damper formulation that snaps outward, overshoots its target diameter, and settles through micro-oscillations, simulating a rubberized optical diaphragm under continuous mechanical excitation.

The executor's own account of what it built, kept verbatim. A claim about the work, not a finding about it.

Judgment

agents: look 125th of 1439 (3.45 over 16 pairs) · brief 61st of 1439 (4.16 over 16 pairs)
agents: looks good, on brief→ rather look at it · ↑ closer to its brief

Humans

no pairs yet

A Bradley–Terry score needs pairs; none has been judged.

Agents

3.45 over 16 pairs

closer to its brief: 4.16 over 16 pairs

Bradley–Terry over this population's pairs alone. 1.00 is the virtual reference every entry is tied against once, so few pairs pull a score toward it: read the ordering before the margin. Views and likes are engagement, not judgment, and are not in this number.

Judge it against another

Two populations, two scores, never one aggregate.

Source

Repositoryhttps://github.com/profcarroll/sketchgen-gallery/tree/main/e/1254
Raw sketchsketch/sketch.js
Raw pagesketch/index.html
Attempts1
LicenceCC BY 4.0
Attribution“concentric circles in fluorescent colors pulse with elastic easing” — sketchgen entry 1254, prompted by profcarroll, written by gemini-3.8-flash under the treatment rules file. https://profcarroll.github.io/sketchgen-gallery/e/1254/ Licensed CC BY 4.0.
Scan to open this entry on a phone · https://profcarroll.github.io/sketchgen-gallery/e/1254/

Lineage · the root of a line 5 generations deep

  1. concentric circles in fluorescent colors pulse with elastic easing

    entry 1254 · root · profcarroll


After this entry: 1 child

Children: entry 1282.

Click a frame to run that sketch in place; one at a time. The whole line from entry 1254.

Provenance

Entry1254
Job1261
Statepublished
Promptconcentric circles in fluorescent colors pulse with elastic easing
BriefFrom the center of a pitch-black canvas, a series of concentric rings radiates outward in high-voltage fluorescent hues—electric lime, radioactive magenta, laser cyan, and hot cadmium yellow. Each ring expands and recoils using exaggerated elastic spring dynamics, overshooting and oscillating before settling into rhythmic wave propagation. As the rings swell and compress, their saturated borders vibrate against one another, generating an optical resonance across the screen. The concentric pulsation continues uninterrupted on its own in perpetual, hypnotic motion without requiring any viewer input.
StatementAn energetic op-art exploration of kinetic resonance and elastic easing. Radiant concentric boundaries swell outward from a dark void, rendered in an unapologetic fluorescent spectrum of acid yellow, neon lime, cyan, and magenta. Instead of predictable linear harmonic motion, each ring is governed by a spring-damper formulation that snaps outward, overshoots its target diameter, and settles through micro-oscillations, simulating a rubberized optical diaphragm under continuous mechanical excitation.
Submitted byprofcarroll
Plannergemini-3.8-flash · answered off this node · prompt planner-v1
Executorgemini-3.8-flash · answered off this node · prompt executor-v3
Rules filetreatment
Assertionsmotion(idle)
Gateattempt 1: gate exit 0 — motion(idle) pass
Attempts1
Prompt tokens— · as reported by the model
Completion tokens— · as reported by the model
Wall seconds20.0 · round trip, export to import
Node shapeoff-node (gemini-3.8-flash) · gated on VM.Standard.A1.Flex 16/96
Seed1
Lineageparent — · children 1282 · generation 1 · critique by —
Sourcerepository · sketch.js · index.html · attempts attempt-1
Created (UTC)2026-09-21T14:59:53Z
Published (UTC)2026-09-21T15:03:51Z
Publish commit6345cf32ab15d584625e2759bd3e6dc9271151be
LicenceCC BY 4.0
Attribution“concentric circles in fluorescent colors pulse with elastic easing” — sketchgen entry 1254, prompted by profcarroll, written by gemini-3.8-flash under the treatment rules file. https://profcarroll.github.io/sketchgen-gallery/e/1254/ Licensed CC BY 4.0.

The same fields, machine-readable, in meta.json.