sketchgen

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

lighting study: the building interrupts the light

Revise: emphasize raycasting from the lightsource against the structure and compute the shadows profcarroll · generation 1

Prompt by profcarroll. Planned by gemma4:e4b, written by qwen3-coder:30b-a3b-q4_K_M.

seed 1 · entry 365 · published

— views · — likes

Brief

The canvas displays a fixed architectural structure illuminated by a powerful, visible light source. From this source, calculated rays project outward, revealing the geometry of the space. When these energetic beams intersect the rigid planes and surfaces of the building, they compute and render dramatic shadows. These dynamic shadows are not static but constantly shift and creep across the structure's façade, providing a perpetual, mathematical study of how light is intercepted and translated into deep, changing shade.

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

This sketch creates a dynamic architectural scene where light rays emanate from a powerful source and cast shifting shadows across building structures. The viewer observes a rotating 3D environment containing geometric buildings and hundreds of light rays that calculate real-time shadow projections. The continuous rotation and mathematical ray casting produce an ever-changing pattern of deep, dramatic shadows that creep and shift across the architectural façade. The piece demonstrates how light interacts with solid geometry through a simplified but effective shadowing algorithm that calculates intersections between rays and building volumes.

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

Judgment

agents: look 1045th of 1439 (0.57 over 23 pairs) · brief 1283rd of 1439 (0.27 over 23 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

0.57 over 23 pairs

closer to its brief: 0.27 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

Repositoryhttps://github.com/profcarroll/sketchgen-gallery/tree/main/e/365
Raw sketchsketch/sketch.js
Raw pagesketch/index.html
Attempts1
LicenceCC BY 4.0
Attribution“lighting study: the building interrupts the light Revise: emphasize r…” — sketchgen entry 365, prompted by profcarroll, written by qwen3-coder:30b-a3b-q4_K_M under the treatment rules file. https://profcarroll.github.io/sketchgen-gallery/e/365/ Licensed CC BY 4.0.
Scan to open this entry on a phone · https://profcarroll.github.io/sketchgen-gallery/e/365/

Lineage · generation 1 of 7 in the line from entry 358

  1. lighting study: the building interrupts the light

    entry 358 · root · profcarroll

  2. Revise: emphasize raycasting from the lightsource against the structure and compute the shadows

    entry 365 · generation 1 · profcarroll


After this entry: 1 child

Children: entry 418.

Click a frame to run that sketch in place; one at a time. The whole line from entry 358.

Provenance

Entry365
Job366
Statepublished
Promptlighting study: the building interrupts the light Revise: emphasize raycasting from the lightsource against the structure and compute the shadows
BriefThe canvas displays a fixed architectural structure illuminated by a powerful, visible light source. From this source, calculated rays project outward, revealing the geometry of the space. When these energetic beams intersect the rigid planes and surfaces of the building, they compute and render dramatic shadows. These dynamic shadows are not static but constantly shift and creep across the structure's façade, providing a perpetual, mathematical study of how light is intercepted and translated into deep, changing shade.
StatementThis sketch creates a dynamic architectural scene where light rays emanate from a powerful source and cast shifting shadows across building structures. The viewer observes a rotating 3D environment containing geometric buildings and hundreds of light rays that calculate real-time shadow projections. The continuous rotation and mathematical ray casting produce an ever-changing pattern of deep, dramatic shadows that creep and shift across the architectural façade. The piece demonstrates how light interacts with solid geometry through a simplified but effective shadowing algorithm that calculates intersections between rays and building volumes.
Submitted byprofcarroll
Plannergemma4:e4b · prompt planner-v1
Executorqwen3-coder:30b-a3b-q4_K_M · prompt executor-v2
Rules filetreatment
Assertionsmotion(idle), uses(webgl)
Gateattempt 1: gate exit 0 — motion(idle) pass, uses(webgl) pass
Attempts1
Prompt tokens2216
Completion tokens867
Wall seconds93.831
Node shapeVM.Standard.A1.Flex 16/94
Seed1
Lineageparent 358 · children 418 · generation 1 · critique by profcarroll
Sourcerepository · sketch.js · index.html · attempts attempt-1
Created (UTC)2026-09-16T01:09:45Z
Published (UTC)2026-09-16T01:35:56Z
Publish commit4b5589d3a010876e24767117245b28609ae51927
LicenceCC BY 4.0
Attribution“lighting study: the building interrupts the light Revise: emphasize r…” — sketchgen entry 365, prompted by profcarroll, written by qwen3-coder:30b-a3b-q4_K_M under the treatment rules file. https://profcarroll.github.io/sketchgen-gallery/e/365/ Licensed CC BY 4.0.

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