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 alternating intersecting ridges and troughs force the marble into sudden, visible lateral deviations. gemma4 · generation 10 · 9 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 566 · published

— views · — likes

Brief

A highly reflective sphere, representing a marble, travels through a rigid, funnel-shaped channel rendered in a complex, sculptural material. The environment is viewed in three dimensions, showing the passage narrowing and widening as the marble proceeds. The marble’s motion is governed by physical simulation, bouncing naturally off the channel walls. As it progresses, the path is forced through alternating, intersecting ridges and deep troughs that abruptly shift the marble's trajectory, causing it to deviate sharply from its initial forward path in visible lateral movements before settling back into the flow.

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

This sketch creates a three-dimensional simulation of a marble rolling through a sculptural funnel channel. The environment is rendered using WebGL for 3D graphics, with the marble's motion governed by simple physics including gravity and collision detection with the channel walls. The channel itself is a complex, curved path that narrows and widens as it progresses, punctuated by alternating ridges and troughs that force the marble to bounce and change direction unpredictably. The viewer observes the marble's journey through this dynamic landscape, seeing how its trajectory shifts dramatically when encountering the sculptural obstacles before settling back into the flow of the channel. The scene rotates slowly to show the full complexity of the three-dimensional space.

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

Judgment

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

0.49 over 23 pairs

closer to its brief: 0.63 over 23 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

Repository	https://github.com/profcarroll/sketchgen-gallery/tree/main/e/566
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 566, prompted by profcarroll, written by qwen3-coder:30b-a3b-q4_K_M under the control rules file. https://profcarroll.github.io/sketchgen-gallery/e/566/ Licensed CC BY 4.0.

Scan to open this entry on a phone · https://profcarroll.github.io/sketchgen-gallery/e/566/

Lineage · generation 10 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
entry 127 · root · profcarroll
7 generations folded · 178, 179, 231, 278, 319, 349, 354 · by gemma4 and profcarroll
1. Revise: the same funnel-shaped container, and this time the marble rolls along a tilted, non-vertical slope at the base.
  entry 178 · generation 1 · gemma4
2. Revise: improve the camera perspective and collision detection
  entry 179 · generation 2 · profcarroll
3. Revise: the same funnel-shaped channel, and this time the marble rolls along a diagonal slope at the base
  entry 231 · generation 3 · gemma4
4. Revise: the same funnel-shaped channel, and this time the diagonal slope gradually curves inward toward the exit.
  entry 278 · generation 4 · gemma4
5. Revise: the same funnel-shaped channel, and this time the diagonal slope widens and flattens into a collecting basin at the exit.
  entry 319 · generation 5 · gemma4
6. Revise: The same funnel-shaped container, and this time the initial diagonal slope features more dramatic and visible curvature changes.
  entry 349 · generation 6 · gemma4
7. Revise: the same funnel-shaped channel, and this time the shallow basin widens and deepens significantly at the exit.
  entry 354 · generation 7 · gemma4
Revise: the same complex, funnel-shaped channel, and this time the initial slope features abrupt shifts in curvature and requires a momentary pause.
entry 410 · generation 8 · gemma4
Revise: the same complex, solid, funnel-shaped channel, and this time the structure incorporates small, alternating intersecting ridges and troughs forcing the marble into constant, minute course corrections.
entry 461 · generation 9 · gemma4
Revise: the same funnel-shaped channel, and this time the alternating intersecting ridges and troughs force the marble into sudden, visible lateral deviations.
entry 566 · generation 10 · gemma4

After this entry: 1 child

Children: entry 654.

Click a frame to run that sketch in place; one at a time. The whole line from entry 127.

Critique this sketch

Provenance

Entry	566
Job	567
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. Revise: the same complex, funnel-shaped channel, and this time the initial slope features abrupt shifts in curvature and requires a momentary pause. Revise: the same complex, solid, funnel-shaped channel, and this time the structure incorporates small, alternating intersecting ridges and troughs forcing the marble into constant, minute course corrections. Revise: the same funnel-shaped channel, and this time the alternating intersecting ridges and troughs force the marble into sudden, visible lateral deviations.
Brief	A highly reflective sphere, representing a marble, travels through a rigid, funnel-shaped channel rendered in a complex, sculptural material. The environment is viewed in three dimensions, showing the passage narrowing and widening as the marble proceeds. The marble’s motion is governed by physical simulation, bouncing naturally off the channel walls. As it progresses, the path is forced through alternating, intersecting ridges and deep troughs that abruptly shift the marble's trajectory, causing it to deviate sharply from its initial forward path in visible lateral movements before settling back into the flow.
Statement	This sketch creates a three-dimensional simulation of a marble rolling through a sculptural funnel channel. The environment is rendered using WebGL for 3D graphics, with the marble's motion governed by simple physics including gravity and collision detection with the channel walls. The channel itself is a complex, curved path that narrows and widens as it progresses, punctuated by alternating ridges and troughs that force the marble to bounce and change direction unpredictably. The viewer observes the marble's journey through this dynamic landscape, seeing how its trajectory shifts dramatically when encountering the sculptural obstacles before settling back into the flow of the channel. The scene rotates slowly to show the full complexity of the three-dimensional space.
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	1560
Completion tokens	974
Wall seconds	93.657
Node shape	VM.Standard.A1.Flex 16/94
Seed	1
Lineage	parent 461 · children 654 · generation 10 · critique by gemma4:e4b
Source	repository · sketch.js · index.html · attempts attempt-1
Created (UTC)	2026-09-17T01:00:04Z
Published (UTC)	2026-09-17T01:23:14Z
Publish commit	52cc095b5d1458c5f449402242f3546e99040360
Licence	CC BY 4.0
Attribution	“a 3D marble rolls around and down a funnel, implementing collision de…” — sketchgen entry 566, prompted by profcarroll, written by qwen3-coder:30b-a3b-q4_K_M under the control rules file. https://profcarroll.github.io/sketchgen-gallery/e/566/ Licensed CC BY 4.0.

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