sketchgen

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

take the viewer inside a combustion engine demonstrating pistons and gearing

Revise: the same dynamic, cutaway cross-section view of a running internal combustion engine, and this time the opening and closing of the intake and exhaust valves are clearly timed with the piston's position. gemma4 · generation 12 · 11 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 1124 · published

— views · — likes

Brief

The canvas displays a dynamic, cross-sectional cutaway of a running internal combustion engine. Pistons are shown moving up and down inside their respective cylinders, powered by the rotation of the crankshaft. The visualization highlights the timing mechanism: the intake and exhaust valves are clearly visible and open and close with precise timing, demonstrating their relationship to the piston's position. The overall composition uses mechanical shapes and colored elements to illustrate the continuous, cyclical process of combustion.

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

This sketch visualizes a dynamic, cross-sectional cutaway of a running internal combustion engine. It shows pistons moving up and down within their cylinders, driven by the rotation of a crankshaft. The timing mechanism is highlighted through clearly visible intake and exhaust valves that open and close in precise synchronization with the piston's position. Mechanical shapes and colored elements illustrate the continuous, cyclical process of combustion, emphasizing how the engine operates as a coordinated system of moving parts.

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

Judgment

agents: look 1393rd of 1439 (0.16 over 33 pairs) · brief 900th of 1439 (0.78 over 33 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

0.16 over 33 pairs

closer to its brief: 0.78 over 33 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/1124
Raw sketchsketch/sketch.js
Raw pagesketch/index.html
Attempts1
LicenceCC BY 4.0
Attribution“take the viewer inside a combustion engine demonstrating pistons and…” — sketchgen entry 1124, prompted by profcarroll, written by qwen3-coder:30b-a3b-q4_K_M under the control rules file. https://profcarroll.github.io/sketchgen-gallery/e/1124/ Licensed CC BY 4.0.
Scan to open this entry on a phone · https://profcarroll.github.io/sketchgen-gallery/e/1124/

Lineage · generation 12 of 16 in the line from entry 422

  1. take the viewer inside a combustion engine demonstrating pistons and gearing

    entry 422 · root · profcarroll

  2. 9 generations folded · 431, 477, 582, 669, 727, 795, 846, 900, 957 · by profcarroll and gemma4
    1. 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

      entry 431 · generation 1 · profcarroll

    2. 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

      entry 477 · generation 2 · gemma4

    3. 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.

      entry 582 · generation 3 · gemma4

    4. 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.

      entry 669 · generation 4 · gemma4

    5. Revise: the same dynamic, cross-sectional view of a combustion engine's core mechanisms, and this time the connecting rods visibly rotating a crankshaft.

      entry 727 · generation 5 · gemma4

    6. 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.

      entry 795 · generation 6 · gemma4

    7. 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.

      entry 846 · generation 7 · gemma4

    8. 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.

      entry 900 · generation 8 · gemma4

    9. Revise: the same dynamic, cutaway cross-section of a running combustion engine, and this time the visible timing gear train linking the crankshaft and the valves is demonstrated.

      entry 957 · generation 9 · gemma4

  3. Revise: the same dynamic, cutaway cross-section of a running combustion engine, and this time the individual components of the valve train are clearly separated and visible.

    entry 998 · generation 10 · gemma4

  4. Revise: the same dynamic, cross-sectional cutaway view of a running internal combustion engine, and this time the rapid, expanding combustion gases inside the cylinder are visually demonstrated, pushing the piston downward.

    entry 1059 · generation 11 · gemma4

  5. Revise: the same dynamic, cutaway cross-section view of a running internal combustion engine, and this time the opening and closing of the intake and exhaust valves are clearly timed with the piston's position.

    entry 1124 · generation 12 · gemma4


After this entry: 1 child

Children: entry 1168.

Click a frame to run that sketch in place; one at a time. The whole line from entry 422.

Provenance

Entry1124
Job1128
Statepublished
Prompttake 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: the same dynamic, cutaway cross-section of a running combustion engine, and this time the visible timing gear train linking the crankshaft and the valves is demonstrated. Revise: the same dynamic, cutaway cross-section of a running combustion engine, and this time the individual components of the valve train are clearly separated and visible. Revise: the same dynamic, cross-sectional cutaway view of a running internal combustion engine, and this time the rapid, expanding combustion gases inside the cylinder are visually demonstrated, pushing the piston downward. Revise: the same dynamic, cutaway cross-section view of a running internal combustion engine, and this time the opening and closing of the intake and exhaust valves are clearly timed with the piston's position.
BriefThe canvas displays a dynamic, cross-sectional cutaway of a running internal combustion engine. Pistons are shown moving up and down inside their respective cylinders, powered by the rotation of the crankshaft. The visualization highlights the timing mechanism: the intake and exhaust valves are clearly visible and open and close with precise timing, demonstrating their relationship to the piston's position. The overall composition uses mechanical shapes and colored elements to illustrate the continuous, cyclical process of combustion.
StatementThis sketch visualizes a dynamic, cross-sectional cutaway of a running internal combustion engine. It shows pistons moving up and down within their cylinders, driven by the rotation of a crankshaft. The timing mechanism is highlighted through clearly visible intake and exhaust valves that open and close in precise synchronization with the piston's position. Mechanical shapes and colored elements illustrate the continuous, cyclical process of combustion, emphasizing how the engine operates as a coordinated system of moving parts.
Submitted byprofcarroll
Plannergemma4:e4b · prompt planner-v1+lenient
Executorqwen3-coder:30b-a3b-q4_K_M · prompt executor-v3
Rules filecontrol
Assertionsmotion(idle)
Gateattempt 1: gate exit 0 — motion(idle) pass
Attempts1
Prompt tokens1693
Completion tokens947
Wall seconds63.016
Node shapeVM.Standard.A1.Flex 16/94
Seed1
Lineageparent 1059 · children 1168 · generation 12 · critique by gemma4:e4b
Sourcerepository · sketch.js · index.html · attempts attempt-1
Created (UTC)2026-09-20T09:09:04Z
Published (UTC)2026-09-20T14:51:32Z
Publish commitd53a4238e1a3c864271e018240dcc8f757b3a62b
LicenceCC BY 4.0
Attribution“take the viewer inside a combustion engine demonstrating pistons and…” — sketchgen entry 1124, prompted by profcarroll, written by qwen3-coder:30b-a3b-q4_K_M under the control rules file. https://profcarroll.github.io/sketchgen-gallery/e/1124/ Licensed CC BY 4.0.

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