take the viewer inside a combustion engine demonstrating pistons and gearing
Revise: the same dynamic, cross-sectional view of a combustion engine's core mechanisms, and this time the connecting rods visibly rotating a crankshaft. gemma4 · generation 5 · 4 earlier revisions in the lineage below
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Brief
The viewer sees a dynamic, cutaway cross-section of a running combustion engine. Within the central cylinders, pistons rise and fall within their bores, connecting through visibly rotating rods to a central crankshaft. The key action is the precise, cyclical actuation and timing of the intake and exhaust valves, which open and close in synchronization with the pistons’ movement. Colored fluids flow through the open valves, illustrating the intake and exhaust cycles, demonstrating the continuous, automatic process of power generation.
Artist's statement · qwen3-coder:30b-a3b-q4_K_M, unedited
This sketch presents a dynamic, cutaway view of a two-cylinder combustion engine running in real-time. Using the WEBGL renderer, it visualizes the core mechanics: pistons moving up and down within their cylinders, connected to a rotating crankshaft through connecting rods. The engine's timing is illustrated by synchronized intake and exhaust valves that open and close as pistons move, with colored fluid flows showing the direction of air/fuel mixture and exhaust gases. The motion is entirely self-contained, driven by mathematical calculations without any user input or external triggers. The visualization emphasizes the cyclical nature of engine operation through continuous animation and precise mechanical relationships.
The executor's own account of what it built, kept verbatim. A claim about the work, not a finding about it.
Judgment
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Agents
0.13 over 29 pairs
closer to its brief: 0.15 over 29 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/727 |
|---|---|
| Raw sketch | sketch/sketch.js |
| Raw page | sketch/index.html |
| Attempts | 1 |
| Licence | CC BY 4.0 |
| Attribution | “take the viewer inside a combustion engine demonstrating pistons and…” — sketchgen entry 727, prompted by profcarroll, written by qwen3-coder:30b-a3b-q4_K_M under the control rules file. https://profcarroll.github.io/sketchgen-gallery/e/727/ Licensed CC BY 4.0. |
Lineage · generation 5 of 16 in the line from entry 422
take the viewer inside a combustion engine demonstrating pistons and gearing
2 generations folded · 431, 477 · by profcarroll and gemma4
Revise: we should see pistons moving up and down inside a cylinder and a spark explosion pushes the piston down which turns a transaxle connected to a gear
Revise: the same cross-section of a combustion engine's core mechanisms, and this time the connection between the pistons and the rods is more visible
Revise: the same dynamic, cross-sectional view of a combustion engine's core mechanisms, and this time the intake and exhaust of the cylinders are visually represented with colored fluid flow.
Revise: the same dynamic, cross-sectional cutaway of a running combustion engine, and this time the intake and exhaust valves are visibly actuated and timed with the movement of the connecting rods.
Revise: the same dynamic, cross-sectional view of a combustion engine's core mechanisms, and this time the connecting rods visibly rotating a crankshaft.
After this entry: 1 child
Children: entry 795.
Click a frame to run that sketch in place; one at a time. The whole line from entry 422.
Critique this sketch
Sign in with GitHub to ask for a revision. One sentence becomes the next generation's prompt.
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take the viewer inside a combustion engine demonstrating pistons and gearing
Revise: we should see pistons moving up and down inside a cylinder and a spark explosion pushes the piston down which turns a transaxle connected to a gear
Revise: the same cross-section of a combustion engine's core mechanisms, and this time the connection between the pistons and the rods is more visible
Revise: the same dynamic, cross-sectional view of a combustion engine's core mechanisms, and this time the intake and exhaust of the cylinders are visually represented with colored fluid flow.
Revise: the same dynamic, cross-sectional cutaway of a running combustion engine, and this time the intake and exhaust valves are visibly actuated and timed with the movement of the connecting rods.
Revise: the same dynamic, cross-sectional view of a combustion engine's core mechanisms, and this time the connecting rods visibly rotating a crankshaft.
Revise: …
Critique recorded. Queued for review.
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…
Provenance
| Entry | 727 |
|---|---|
| Job | 728 |
| State | published |
| Prompt | take the viewer inside a combustion engine demonstrating pistons and gearing Revise: we should see pistons moving up and down inside a cylinder and a spark explosion pushes the piston down which turns a transaxle connected to a gear Revise: the same cross-section of a combustion engine's core mechanisms, and this time the connection between the pistons and the rods is more visible Revise: the same dynamic, cross-sectional view of a combustion engine's core mechanisms, and this time the intake and exhaust of the cylinders are visually represented with colored fluid flow. Revise: the same dynamic, cross-sectional cutaway of a running combustion engine, and this time the intake and exhaust valves are visibly actuated and timed with the movement of the connecting rods. Revise: the same dynamic, cross-sectional view of a combustion engine's core mechanisms, and this time the connecting rods visibly rotating a crankshaft. |
| Brief | The viewer sees a dynamic, cutaway cross-section of a running combustion engine. Within the central cylinders, pistons rise and fall within their bores, connecting through visibly rotating rods to a central crankshaft. The key action is the precise, cyclical actuation and timing of the intake and exhaust valves, which open and close in synchronization with the pistons’ movement. Colored fluids flow through the open valves, illustrating the intake and exhaust cycles, demonstrating the continuous, automatic process of power generation. |
| Statement | This sketch presents a dynamic, cutaway view of a two-cylinder combustion engine running in real-time. Using the WEBGL renderer, it visualizes the core mechanics: pistons moving up and down within their cylinders, connected to a rotating crankshaft through connecting rods. The engine's timing is illustrated by synchronized intake and exhaust valves that open and close as pistons move, with colored fluid flows showing the direction of air/fuel mixture and exhaust gases. The motion is entirely self-contained, driven by mathematical calculations without any user input or external triggers. The visualization emphasizes the cyclical nature of engine operation through continuous animation and precise mechanical relationships. |
| 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 | 1550 |
| Completion tokens | 1564 |
| Wall seconds | 122.939 |
| Node shape | VM.Standard.A1.Flex 16/94 |
| Seed | 1 |
| Lineage | parent 669 · children 795 · generation 5 · critique by gemma4:e4b |
| Source | repository · sketch.js · index.html · attempts attempt-1 |
| Created (UTC) | 2026-09-17T19:48:16Z |
| Published (UTC) | 2026-09-17T19:50:51Z |
| Publish commit | 82ee97df2495edacdf625753488273616f9c0e30 |
| Licence | CC BY 4.0 |
| Attribution | “take the viewer inside a combustion engine demonstrating pistons and…” — sketchgen entry 727, prompted by profcarroll, written by qwen3-coder:30b-a3b-q4_K_M under the control rules file. https://profcarroll.github.io/sketchgen-gallery/e/727/ Licensed CC BY 4.0. |
The same fields, machine-readable, in meta.json.