a 3D marble rolls around and down a funnel, implementing collision detection, so it rolls naturally along sufaces
Revise: the same funnel-shaped channel, and this time the shallow basin widens and deepens significantly at the exit. gemma4 · generation 7 · 6 earlier revisions in the lineage below
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Brief
The viewer observes a marble suspended within a complex, funnel-shaped channel. The marble's journey begins as it rolls down a steeply curved initial slope. Gravity guides the marble through the channel, detailing dramatic and visible changes in curvature. The marble's motion is highly realistic, showcasing bounces and rolls as it interacts with the channel's surfaces. The path transitions into a wide, shallow basin at the exit, where the marble gradually slows and settles to a stop. The scene is a purely physical observation of mechanical movement and gravity's effect on a singular object.
Artist's statement · qwen3-coder:30b-a3b-q4_K_M, unedited
This sketch simulates a marble rolling through a complex, funnel-shaped channel using WebGL rendering for 3D visualization. The scene begins with a steeply curved initial slope that transitions into a wide, shallow basin at the exit. Gravity drives the marble's motion realistically, causing it to bounce and roll as it interacts with the channel's surfaces. The simulation includes physics calculations for velocity, gravity, and collision detection with the channel walls. A trailing effect shows the marble's path, and the camera slowly rotates to provide a dynamic view of the mechanical movement and gravitational effects on the single object.
The executor's own account of what it built, kept verbatim. A claim about the work, not a finding about it.
Judgment
Humans
0.43 over 1 pair
closer to its brief: 0.41 over 1 pair
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.
Agents
0.57 over 34 pairs
closer to its brief: 1.32 over 34 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/354 |
|---|---|
| Raw sketch | sketch/sketch.js |
| Raw page | sketch/index.html |
| Attempts | 1 |
| Licence | CC BY 4.0 |
| Attribution | “a 3D marble rolls around and down a funnel, implementing collision de…” — sketchgen entry 354, prompted by profcarroll, written by qwen3-coder:30b-a3b-q4_K_M under the control rules file. https://profcarroll.github.io/sketchgen-gallery/e/354/ Licensed CC BY 4.0. |
Lineage · generation 7 of 13 in the line from entry 127
a 3D marble rolls around and down a funnel, implementing collision detection, so it rolls naturally along sufaces
4 generations folded · 178, 179, 231, 278 · by gemma4 and profcarroll
Revise: the same funnel-shaped container, and this time the marble rolls along a tilted, non-vertical slope at the base.
Revise: improve the camera perspective and collision detection
Revise: the same funnel-shaped channel, and this time the marble rolls along a diagonal slope at the base
Revise: the same funnel-shaped channel, and this time the diagonal slope gradually curves inward toward the exit.
Revise: the same funnel-shaped channel, and this time the diagonal slope widens and flattens into a collecting basin at the exit.
Revise: The same funnel-shaped container, and this time the initial diagonal slope features more dramatic and visible curvature changes.
Revise: the same funnel-shaped channel, and this time the shallow basin widens and deepens significantly at the exit.
After this entry: 1 child
Children: entry 410.
Click a frame to run that sketch in place; one at a time. The whole line from entry 127.
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 3D marble rolls around and down a funnel, implementing collision detection, so it rolls naturally along sufaces
Revise: the same funnel-shaped container, and this time the marble rolls along a tilted, non-vertical slope at the base.
Revise: improve the camera perspective and collision detection
Revise: the same funnel-shaped channel, and this time the marble rolls along a diagonal slope at the base
Revise: the same funnel-shaped channel, and this time the diagonal slope gradually curves inward toward the exit.
Revise: the same funnel-shaped channel, and this time the diagonal slope widens and flattens into a collecting basin at the exit.
Revise: The same funnel-shaped container, and this time the initial diagonal slope features more dramatic and visible curvature changes.
Revise: the same funnel-shaped channel, and this time the shallow basin widens and deepens significantly at the exit.
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 | 354 |
|---|---|
| Job | 355 |
| State | published |
| Prompt | a 3D marble rolls around and down a funnel, implementing collision detection, so it rolls naturally along sufaces Revise: the same funnel-shaped container, and this time the marble rolls along a tilted, non-vertical slope at the base. Revise: improve the camera perspective and collision detection Revise: the same funnel-shaped channel, and this time the marble rolls along a diagonal slope at the base Revise: the same funnel-shaped channel, and this time the diagonal slope gradually curves inward toward the exit. Revise: the same funnel-shaped channel, and this time the diagonal slope widens and flattens into a collecting basin at the exit. Revise: The same funnel-shaped container, and this time the initial diagonal slope features more dramatic and visible curvature changes. Revise: the same funnel-shaped channel, and this time the shallow basin widens and deepens significantly at the exit. |
| Brief | The viewer observes a marble suspended within a complex, funnel-shaped channel. The marble's journey begins as it rolls down a steeply curved initial slope. Gravity guides the marble through the channel, detailing dramatic and visible changes in curvature. The marble's motion is highly realistic, showcasing bounces and rolls as it interacts with the channel's surfaces. The path transitions into a wide, shallow basin at the exit, where the marble gradually slows and settles to a stop. The scene is a purely physical observation of mechanical movement and gravity's effect on a singular object. |
| Statement | This sketch simulates a marble rolling through a complex, funnel-shaped channel using WebGL rendering for 3D visualization. The scene begins with a steeply curved initial slope that transitions into a wide, shallow basin at the exit. Gravity drives the marble's motion realistically, causing it to bounce and roll as it interacts with the channel's surfaces. The simulation includes physics calculations for velocity, gravity, and collision detection with the channel walls. A trailing effect shows the marble's path, and the camera slowly rotates to provide a dynamic view of the mechanical movement and gravitational effects on the single object. |
| Submitted by | profcarroll |
| Planner | gemma4:e4b · prompt planner-v1 |
| Executor | qwen3-coder:30b-a3b-q4_K_M · prompt executor-v2 |
| Rules file | control |
| Assertions | uses(webgl), motion(idle) |
| Gate | attempt 1: gate exit 0 — motion(idle) pass, uses(webgl) pass |
| Attempts | 1 |
| Prompt tokens | 1560 |
| Completion tokens | 1195 |
| Wall seconds | 108.927 |
| Node shape | VM.Standard.A1.Flex 16/94 |
| Seed | 1 |
| Lineage | parent 349 · children 410 · generation 7 · critique by gemma4:e4b |
| Source | repository · sketch.js · index.html · attempts attempt-1 |
| Created (UTC) | 2026-09-16T00:24:56Z |
| Published (UTC) | 2026-09-16T00:29:30Z |
| Publish commit | a3756368a47694a2f613fabddc421489241d3e87 |
| Licence | CC BY 4.0 |
| Attribution | “a 3D marble rolls around and down a funnel, implementing collision de…” — sketchgen entry 354, prompted by profcarroll, written by qwen3-coder:30b-a3b-q4_K_M under the control rules file. https://profcarroll.github.io/sketchgen-gallery/e/354/ Licensed CC BY 4.0. |
The same fields, machine-readable, in meta.json.