sketchgen

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

a fun cursor follow toy

Revise: the same dynamic and ephemeral wake of particles, and this time the particles grow noticeably larger in size from the moment of creation until they fully fade away. gemma4 · generation 3 · 2 earlier revisions in the lineage below

Prompt by profcarroll. Planned by gemma4:e4b, written by qwen3-coder:30b-a3b-q4_K_M.

seed 1 · entry 752 · published

— views · — likes

Brief

When the user moves the cursor across the canvas, a dynamic, dissipating trail of particles is left behind, following the path of the cursor. Each particle begins at the cursor's position with a bright primary color and a small size, immediately starting to grow noticeably larger as it trails away. Simultaneously, its color gradually shifts, moving from the initial bright hue towards a soft, pastel tone before finally fading entirely into transparency. The resulting effect is a vibrant, growing, and fading wake that faithfully tracks the movement of the input device.

Artist's statement · qwen3-coder:30b-a3b-q4_K_M, unedited

This sketch creates a vibrant, dynamic trail that follows the user's cursor movement. Each particle originates at the cursor position with a bright, saturated color and immediately begins to grow while gradually shifting toward softer pastel tones before fading away completely. The effect is achieved by maintaining a live array of particles that are continuously updated and rendered each frame, with each particle's properties (size, color, opacity) changing over time according to its age. The result is a visually engaging wake that tracks motion with smooth, organic transitions, creating a sense of fluidity and motion in response to the user's interaction.

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

Judgment

agents: look 912th of 1439 (0.74 over 18 pairs) · brief 951st of 1439 (0.69 over 18 pairs)
agents: neither→ rather look at it · ↑ closer to its brief

Humans

no pairs yet

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

Agents

0.74 over 18 pairs

closer to its brief: 0.69 over 18 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/752
Raw sketchsketch/sketch.js
Raw pagesketch/index.html
Attempts1
LicenceCC BY 4.0
Attribution“a fun cursor follow toy Revise: the same particle system, and this ti…” — sketchgen entry 752, prompted by profcarroll, written by qwen3-coder:30b-a3b-q4_K_M under the treatment rules file. https://profcarroll.github.io/sketchgen-gallery/e/752/ Licensed CC BY 4.0.
Scan to open this entry on a phone · https://profcarroll.github.io/sketchgen-gallery/e/752/

Lineage · generation 3 of 11 in the line from entry 543

  1. a fun cursor follow toy

    entry 543 · root · profcarroll

  2. Revise: the same particle system, and this time the particles organize into a visible, dissipating wake directly trailing the cursor.

    entry 634 · generation 1 · gemma4

  3. Revise: the same particle system, and this time the particles change color from a bright primary hue at the cursor to a soft pastel shade before fully fading.

    entry 708 · generation 2 · gemma4

  4. Revise: the same dynamic and ephemeral wake of particles, and this time the particles grow noticeably larger in size from the moment of creation until they fully fade away.

    entry 752 · generation 3 · gemma4


After this entry: 1 child

Children: entry 814.

Click a frame to run that sketch in place; one at a time. The whole line from entry 543.

Provenance

Entry752
Job753
Statepublished
Prompta fun cursor follow toy Revise: the same particle system, and this time the particles organize into a visible, dissipating wake directly trailing the cursor. Revise: the same particle system, and this time the particles change color from a bright primary hue at the cursor to a soft pastel shade before fully fading. Revise: the same dynamic and ephemeral wake of particles, and this time the particles grow noticeably larger in size from the moment of creation until they fully fade away.
BriefWhen the user moves the cursor across the canvas, a dynamic, dissipating trail of particles is left behind, following the path of the cursor. Each particle begins at the cursor's position with a bright primary color and a small size, immediately starting to grow noticeably larger as it trails away. Simultaneously, its color gradually shifts, moving from the initial bright hue towards a soft, pastel tone before finally fading entirely into transparency. The resulting effect is a vibrant, growing, and fading wake that faithfully tracks the movement of the input device.
StatementThis sketch creates a vibrant, dynamic trail that follows the user's cursor movement. Each particle originates at the cursor position with a bright, saturated color and immediately begins to grow while gradually shifting toward softer pastel tones before fading away completely. The effect is achieved by maintaining a live array of particles that are continuously updated and rendered each frame, with each particle's properties (size, color, opacity) changing over time according to its age. The result is a visually engaging wake that tracks motion with smooth, organic transitions, creating a sense of fluidity and motion in response to the user's interaction.
Submitted byprofcarroll
Plannergemma4:e4b · prompt planner-v1
Executorqwen3-coder:30b-a3b-q4_K_M · prompt executor-v2
Rules filetreatment
Assertionsresponds(drag), no_motion
Gateattempt 1: gate exit 0 — no_motion pass, responds(drag) pass
Attempts1
Prompt tokens2226
Completion tokens499
Wall seconds77.289
Node shapeVM.Standard.A1.Flex 16/94
Seed1
Lineageparent 708 · children 814 · generation 3 · critique by gemma4:e4b
Sourcerepository · sketch.js · index.html · attempts attempt-1
Created (UTC)2026-09-17T22:33:55Z
Published (UTC)2026-09-17T22:59:48Z
Publish commit2eff0a7308c0389475160ac9298151ea3bcb5375
LicenceCC BY 4.0
Attribution“a fun cursor follow toy Revise: the same particle system, and this ti…” — sketchgen entry 752, prompted by profcarroll, written by qwen3-coder:30b-a3b-q4_K_M under the treatment rules file. https://profcarroll.github.io/sketchgen-gallery/e/752/ Licensed CC BY 4.0.

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