a fun cursor follow toy
Revise: the same dynamic, ephemeral trail of particles, and this time they briefly leave a faint, residual line of ink on the canvas where they passed. gemma4 · generation 7 · 6 earlier revisions in the lineage below
OFF-PLAN — this sketch runs. It differs from the plan the planner wrote for it.
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Brief
Under the mouse cursor, thousands of brightly colored particles trail dynamically, creating a continuous, ephemeral wake. As the cursor moves across the canvas, these particles quickly scatter and fade, but before they vanish, they momentarily stain the background. This leaves behind a faint, residual line of deep ink that hangs on the canvas, slowly dissipating over time and subtly darkening the passage the cursor has recently made. The drawing is entirely dependent on the user's movement.
Artist's statement · qwen3-coder:30b-a3b-q4_K_M, unedited
This sketch creates an interactive particle system that responds to mouse movement. Thousands of colorful particles emerge from the cursor position and scatter outward with physics-based motion, leaving a lingering trail that gradually fades. The particles are dynamically generated and managed in a fixed pool, creating an ephemeral wake effect. As the cursor moves across the canvas, particles quickly disperse and fade, but before disappearing they briefly stain the background with their color, forming a persistent visual trace. The system uses a combination of physics simulation and temporal fading to create a continuous, evolving pattern that captures the essence of motion through particle dynamics.
The executor's own account of what it built, kept verbatim. A claim about the work, not a finding about it.
Judgment
Humans
no pairs yet
A Bradley–Terry score needs pairs; none has been judged.
Agents
0.52 over 15 pairs
closer to its brief: 0.47 over 15 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.
Two populations, two scores, never one aggregate.
Source
| Repository | https://github.com/profcarroll/sketchgen-gallery/tree/main/e/938 |
|---|---|
| Raw sketch | sketch/sketch.js |
| Raw page | sketch/index.html |
| Attempts | 3 |
| Licence | CC BY 4.0 |
| Attribution | “a fun cursor follow toy Revise: the same particle system, and this ti…” — sketchgen entry 938, prompted by profcarroll, written by qwen3-coder:30b-a3b-q4_K_M under the treatment rules file. https://profcarroll.github.io/sketchgen-gallery/e/938/ Licensed CC BY 4.0. |
Lineage · generation 7 of 11 in the line from entry 543
a fun cursor follow toy
4 generations folded · 634, 708, 752, 814 · all by gemma4
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.
Revise: the same dynamic, dissipating trail of particles, and this time the particles momentarily form a noticeable ring shape upon reaching peak size.
Revise: the same visible, dynamic wake of dissipating particles, and this time the particles leave behind a smoky, transparent afterglow that fades slightly slower than the particles themselves.
Revise: animate the background so that the cursor toy interacts with it as it moves
Revise: the same dynamic, ephemeral trail of particles, and this time they briefly leave a faint, residual line of ink on the canvas where they passed.
After this entry: 1 child
Children: entry 983.
Click a frame to run that sketch in place; one at a time. The whole line from entry 543.
Critique this sketch
Sign in with GitHub to ask for a revision. One sentence becomes the next generation's prompt.
One sentence, under 40 words, no code.
a 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.
Revise: the same dynamic, dissipating trail of particles, and this time the particles momentarily form a noticeable ring shape upon reaching peak size.
Revise: the same visible, dynamic wake of dissipating particles, and this time the particles leave behind a smoky, transparent afterglow that fades slightly slower than the particles themselves.
Revise: animate the background so that the cursor toy interacts with it as it moves
Revise: the same dynamic, ephemeral trail of particles, and this time they briefly leave a faint, residual line of ink on the canvas where they passed.
Revise: …
Critique recorded. Queued for review.
Your username appears on the child entry as the critic, the way the critic model's name appears on this one.
…
Provenance
| Entry | 938 |
|---|---|
| Job | 940 |
| State | published |
| Prompt | a 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. Revise: the same dynamic, dissipating trail of particles, and this time the particles momentarily form a noticeable ring shape upon reaching peak size. Revise: the same visible, dynamic wake of dissipating particles, and this time the particles leave behind a smoky, transparent afterglow that fades slightly slower than the particles themselves. Revise: animate the background so that the cursor toy interacts with it as it moves Revise: the same dynamic, ephemeral trail of particles, and this time they briefly leave a faint, residual line of ink on the canvas where they passed. |
| Brief | Under the mouse cursor, thousands of brightly colored particles trail dynamically, creating a continuous, ephemeral wake. As the cursor moves across the canvas, these particles quickly scatter and fade, but before they vanish, they momentarily stain the background. This leaves behind a faint, residual line of deep ink that hangs on the canvas, slowly dissipating over time and subtly darkening the passage the cursor has recently made. The drawing is entirely dependent on the user's movement. |
| Statement | This sketch creates an interactive particle system that responds to mouse movement. Thousands of colorful particles emerge from the cursor position and scatter outward with physics-based motion, leaving a lingering trail that gradually fades. The particles are dynamically generated and managed in a fixed pool, creating an ephemeral wake effect. As the cursor moves across the canvas, particles quickly disperse and fade, but before disappearing they briefly stain the background with their color, forming a persistent visual trace. The system uses a combination of physics simulation and temporal fading to create a continuous, evolving pattern that captures the essence of motion through particle dynamics. |
| Submitted by | profcarroll |
| Planner | gemma4:e4b · prompt planner-v1+lenient |
| Executor | qwen3-coder:30b-a3b-q4_K_M · prompt executor-v3 |
| Rules file | treatment |
| Assertions | responds(drag), no_motion |
| Gate | attempt 1: gate exit 1 — no_motion fail, responds(drag) pass attempt 2: gate exit 1 — no_motion fail, responds(drag) pass attempt 3: gate exit 1 — no_motion pass, responds(drag) pass |
| Attempts | 3 |
| Prompt tokens | 7352 |
| Completion tokens | 2209 |
| Wall seconds | 157.663 |
| Node shape | VM.Standard.A1.Flex 16/94 |
| Seed | 1 |
| Lineage | parent 880 · children 983 · generation 7 · critique by gemma4:e4b |
| Source | repository · sketch.js · index.html · attempts attempt-1, attempt-2, attempt-3 |
| Created (UTC) | 2026-09-18T22:34:38Z |
| Published (UTC) | 2026-09-19T03:55:17Z |
| Publish commit | c7379ec69d6203af65ea96e7188a27f3c4627eb0 |
| Licence | CC BY 4.0 |
| Attribution | “a fun cursor follow toy Revise: the same particle system, and this ti…” — sketchgen entry 938, prompted by profcarroll, written by qwen3-coder:30b-a3b-q4_K_M under the treatment rules file. https://profcarroll.github.io/sketchgen-gallery/e/938/ Licensed CC BY 4.0. |
The same fields, machine-readable, in meta.json.