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 marble rolls along a diagonal slope at the base gemma4 · generation 3 · 2 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 231 · published

— views · — likes

Brief

The canvas displays a smooth, continuous simulation of a sphere rolling through a curved, funnel-shaped channel. The marble travels naturally, driven by gravity, following the contours of the funnel. As it reaches the bottom, its path changes to follow a defined, diagonal slope, demonstrating realistic physics and collision detection against the surfaces of the channel walls. The movement is entirely continuous, showcasing the ball's physical interaction with the geometry of the container.

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

This sketch simulates a marble rolling through a funnel-shaped channel using physics-based motion and collision detection. The ball starts at the top of a spiral funnel, then transitions to a diagonal slope at the bottom. The simulation uses gravity, velocity, and vector math to create realistic movement, with simple bounce physics when the ball hits the funnel walls. The visualization renders in 3D space using p5's WEBGL mode, showing the continuous motion of the sphere as it interacts with both curved and straight surfaces.

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

Judgment

agents: on brief, not much to look at→ rather look at it · ↑ closer to its brief

Humans

no pairs yet

A Bradley–Terry score needs pairs; none has been judged.

Agents

0.34 over 42 pairs

closer to its brief: 3.24 over 42 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/231
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 231, prompted by profcarroll, written by qwen3-coder:30b-a3b-q4_K_M under the control rules file. https://profcarroll.github.io/sketchgen-gallery/e/231/ Licensed CC BY 4.0.

Scan to open this entry on a phone · https://profcarroll.github.io/sketchgen-gallery/e/231/

Lineage · generation 3 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
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
Revise: improve the camera perspective and collision detection
entry 179 · generation 2 · profcarroll
Revise: the same funnel-shaped channel, and this time the marble rolls along a diagonal slope at the base
entry 231 · generation 3 · gemma4

After this entry: 1 child

Children: entry 278.

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

Provenance

Entry	231
Job	232
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
Brief	The canvas displays a smooth, continuous simulation of a sphere rolling through a curved, funnel-shaped channel. The marble travels naturally, driven by gravity, following the contours of the funnel. As it reaches the bottom, its path changes to follow a defined, diagonal slope, demonstrating realistic physics and collision detection against the surfaces of the channel walls. The movement is entirely continuous, showcasing the ball's physical interaction with the geometry of the container.
Statement	This sketch simulates a marble rolling through a funnel-shaped channel using physics-based motion and collision detection. The ball starts at the top of a spiral funnel, then transitions to a diagonal slope at the bottom. The simulation uses gravity, velocity, and vector math to create realistic movement, with simple bounce physics when the ball hits the funnel walls. The visualization renders in 3D space using p5's WEBGL mode, showing the continuous motion of the sphere as it interacts with both curved and straight surfaces.
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	1535
Completion tokens	768
Wall seconds	79.914
Node shape	VM.Standard.A1.Flex 16/94
Seed	1
Lineage	parent 179 · children 278 · generation 3 · critique by gemma4:e4b
Source	repository · sketch.js · index.html · attempts attempt-1
Created (UTC)	2026-09-15T05:36:03Z
Published (UTC)	2026-09-15T13:37:25Z
Publish commit	69e712c6e550f7d17ee93260f7a5a15af534ce6f
Licence	CC BY 4.0
Attribution	“a 3D marble rolls around and down a funnel, implementing collision de…” — sketchgen entry 231, prompted by profcarroll, written by qwen3-coder:30b-a3b-q4_K_M under the control rules file. https://profcarroll.github.io/sketchgen-gallery/e/231/ Licensed CC BY 4.0.

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