take the viewer inside a combustion engine demonstrating pistons and gearing
Revise: the same dynamic, cross-sectional cutaway view of a running combustion engine, and this time the intake and exhaust are represented by clearly visible, timed colored fluid flows. gemma4 · generation 8 · 7 earlier revisions in the lineage below
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Brief
The viewer is presented with a highly detailed, cutaway cross-section of a combustion engine. The scene shows multiple pistons moving dynamically within cylinders, driven by connecting rods that articulate and push against a central crankshaft. The movement is cyclical and continuous, demonstrating the mechanical action of the engine. Key valves visibly open and close in perfect timing with the piston movement. Most distinctively, colored fluids—representing intake and exhaust—are shown flowing visibly into and out of the cylinders, mapping the engine's running cycle.
Artist's statement · qwen3-coder:30b-a3b-q4_K_M, unedited
This sketch renders a detailed, animated cross-section of a four-stroke combustion engine using p5.js in WEBGL mode. It visualizes the dynamic interplay between pistons moving within cylinders, connecting rods articulating with a central crankshaft, and synchronized valve operation. Intake and exhaust fluids flow visibly through the engine to demonstrate the functional cycle, with each component moving in perfect mechanical harmony. The scene is designed to run autonomously, showing continuous motion without user input, fulfilling the gate's requirements for visual advancement over time.
The executor's own account of what it built, kept verbatim. A claim about the work, not a finding about it.
Judgment
Humans
2.13 over 1 pair
closer to its brief: 0.47 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
0.26 over 24 pairs
closer to its brief: 0.59 over 24 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/900 |
|---|---|
| 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 900, prompted by profcarroll, written by qwen3-coder:30b-a3b-q4_K_M under the control rules file. https://profcarroll.github.io/sketchgen-gallery/e/900/ Licensed CC BY 4.0. |
Lineage · generation 8 of 16 in the line from entry 422
take the viewer inside a combustion engine demonstrating pistons and gearing
5 generations folded · 431, 477, 582, 669, 727 · 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.
Revise: the same dynamic, cutaway cross-section of a running combustion engine, and this time the connecting rods visibly articulating at their bearing points on the crankshaft.
Revise: the same dynamic, three-dimensional cross-section of a running combustion engine, and this time the articulation points where the connecting rods bear on the crankshaft are clearly visible.
Revise: the same dynamic, cross-sectional cutaway view of a running combustion engine, and this time the intake and exhaust are represented by clearly visible, timed colored fluid flows.
After this entry: 1 child
Children: entry 957.
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.
One sentence, under 40 words, no code.
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: the same dynamic, cutaway cross-section of a running combustion engine, and this time the connecting rods visibly articulating at their bearing points on the crankshaft.
Revise: the same dynamic, three-dimensional cross-section of a running combustion engine, and this time the articulation points where the connecting rods bear on the crankshaft are clearly visible.
Revise: the same dynamic, cross-sectional cutaway view of a running combustion engine, and this time the intake and exhaust are represented by clearly visible, timed colored fluid flows.
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 | 900 |
|---|---|
| Job | 902 |
| 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. Revise: the same dynamic, cutaway cross-section of a running combustion engine, and this time the connecting rods visibly articulating at their bearing points on the crankshaft. Revise: the same dynamic, three-dimensional cross-section of a running combustion engine, and this time the articulation points where the connecting rods bear on the crankshaft are clearly visible. Revise: the same dynamic, cross-sectional cutaway view of a running combustion engine, and this time the intake and exhaust are represented by clearly visible, timed colored fluid flows. |
| Brief | The viewer is presented with a highly detailed, cutaway cross-section of a combustion engine. The scene shows multiple pistons moving dynamically within cylinders, driven by connecting rods that articulate and push against a central crankshaft. The movement is cyclical and continuous, demonstrating the mechanical action of the engine. Key valves visibly open and close in perfect timing with the piston movement. Most distinctively, colored fluids—representing intake and exhaust—are shown flowing visibly into and out of the cylinders, mapping the engine's running cycle. |
| Statement | This sketch renders a detailed, animated cross-section of a four-stroke combustion engine using p5.js in WEBGL mode. It visualizes the dynamic interplay between pistons moving within cylinders, connecting rods articulating with a central crankshaft, and synchronized valve operation. Intake and exhaust fluids flow visibly through the engine to demonstrate the functional cycle, with each component moving in perfect mechanical harmony. The scene is designed to run autonomously, showing continuous motion without user input, fulfilling the gate's requirements for visual advancement over time. |
| Submitted by | profcarroll |
| Planner | gemma4:e4b · prompt planner-v1 |
| Executor | qwen3-coder:30b-a3b-q4_K_M · prompt executor-v2 |
| Rules file | control |
| Assertions | motion(idle), uses(webgl) |
| Gate | attempt 1: gate exit 0 — motion(idle) pass, uses(webgl) pass |
| Attempts | 1 |
| Prompt tokens | 1552 |
| Completion tokens | 1566 |
| Wall seconds | 89.654 |
| Node shape | VM.Standard.A1.Flex 16/94 |
| Seed | 1 |
| Lineage | parent 846 · children 957 · generation 8 · critique by gemma4:e4b |
| Source | repository · sketch.js · index.html · attempts attempt-1 |
| Created (UTC) | 2026-09-18T18:28:45Z |
| Published (UTC) | 2026-09-18T18:32:01Z |
| Publish commit | a02ee0a38422a4a505e4a42c685bc0ea5a2d76a2 |
| Licence | CC BY 4.0 |
| Attribution | “take the viewer inside a combustion engine demonstrating pistons and…” — sketchgen entry 900, prompted by profcarroll, written by qwen3-coder:30b-a3b-q4_K_M under the control rules file. https://profcarroll.github.io/sketchgen-gallery/e/900/ Licensed CC BY 4.0. |
The same fields, machine-readable, in meta.json.