Rubik's Cube · claude-sonnet-5.5

Output generated Cost / run $0.0772 Runtime 42.1s

Prompt for this run

Using the pre-provided three.min.js (global THREE), render an interactive 3D Rubik's Cube with clickable face rotations, orbit-drag camera, and a scramble button.

⛨ sandboxed Open in new tab ↗

TAKE IT TO CODE

A single self-contained HTML file — copy it and open in any browser, or reuse the prompt with your own pi-agent run.

RUN

modelclaude-sonnet-5.5

vendorAnthropic · Claude

harnesspi 0.87.1 · browser iteration

generated2026-10-05

METRICS

runtime42.1s

tokens in31k

tokens out4.7k

cached20k

cost / run$0.0772

Transcript · 14 messages

system

user

Using the pre-provided three.min.js (global THREE), render an interactive 3D Rubik's Cube with clickable face rotations, orbit-drag camera, and a scramble button.

assistant

→ bash {"command":"ls; head -c 300 three.min.js | grep -o 'REVISION[^,]*'; grep -o 'REVISION=\"[0-9]*\"' three.min.js"}

toolResult

three.min.js Command exited with code 1

assistant

thinking

I'm planning the cube structure with 27 individual cubies rendered as grouped meshes with per-face materials, plus controls for rotating faces via buttons or clicking directly on stickers, while dragging elsewhere orbits the camera. I'm working out how to animate face rotations by grouping the affected cubies together and rotating that temporary group.

I'm figuring out how to detect which layer of cubies to rotate based on their position along an axis, and how to determine rotation direction from the clicked face's normal using raycasting -- transforming the local normal by the cubie's world quaternion to find the correct axis, then rotating clockwise when viewed from outside the face.

→ bash

{"command":"cat > index.html <<'E'\n<!DOCTYPE html><html><head><meta charset=\"utf-8\"><title>Rubik's Cube</title><style>\nbody{margin:0;ove

toolResult

(no output)

assistant

thinking

My snapping logic is actually broken—rounding quaternion components to halves is wrong since 0.7071 would round to 0.5. I need to remove that quaternion rounding and instead snap by rounding the rotation matrix then deriving the quaternion from it.

→ bash

{"command":"python3 - <<'E'\ns=open('index.html').read()\na=s.index(\"const q=c.quaternion;q.set\");b=s.index(\"});cur=null;}}\")\ns=s[:a]+\

→ browser {"action":"reload"}

toolResult

/bin/bash: line 1: python3: command not found Command exited with code 127

toolResult

Frame 1, +0ms

[Browser image supplied to model]

{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing.","warning: [.WebGL-0x242c00179e00]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels","warning: [.WebGL-0x242c00179e00]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels","warning: [.WebGL-0x242c00179e00]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels","warning: [.WebGL-0x242c00179e00]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels (this message will no longer repeat)"],"dom":"Drag to orbit · click a sticker to turn its face (Shift = counter-clockwise)\nUU'DD'LL'RR'FF'BB'ScrambleReset","images":"attached"}

assistant

thinking

Since Python isn't available here, my earlier fix never got applied, so the crude quaternion rounding bug is still in place—it rounds to quaternion halves but discards the resulting matrix. I need to fix the snapping logic directly through node or manual editing instead; the black background from the renderer's clear color is fine as is.

→ bash

{"command":"node -e \"\nconst fs=require('fs');let s=fs.readFileSync('index.html','utf8');\nconst a=s.indexOf('const q=c.quaternion;q.set'),

→ browser {"action":"reload"}

→ browser {"action":"click","x":780,"y":770}

toolResult

(no output)

toolResult

Frame 1, +0ms

[Browser image supplied to model]

{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing.","warning: [.WebGL-0x31d400179e00]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels","warning: [.WebGL-0x31d400179e00]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels","warning: [.WebGL-0x31d400179e00]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels","warning: [.WebGL-0x31d400179e00]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels (this message will no longer repeat)"],"dom":"Drag to orbit · click a sticker to turn its face (Shift = counter-clockwise)\nUU'DD'LL'RR'FF'BB'ScrambleReset","images":"attached"}

toolResult

Frame 1, +0ms

[Browser image supplied to model]

assistant

I built the Rubik's Cube in `/tmp/job-9qVQmy/index.html`. It loads `three.min.js` and has no other dependencies. I only checked it by loading the page and pressing Scramble. The page loaded with no errors, and the cube animated into a scrambled state. I did not test orbit-drag, clicking stickers, the face buttons, Reset or the scroll-wheel zoom. - **Face rotations:** Click any sticker to turn that face a quarter turn clockwise, or Shift-click for counter-clockwise. The buttons U, U′, D, D′, L, L′, R, R′, F, F′, B and B′ turn faces directly. Turns animate and queue up if you press several quickly. - **Camera:** Drag to orbit around the cube and scroll to zoom. A drag doesn't trigger a face turn. - **Scramble:** Applies 20 random fast turns. - **Reset:** Not requested, but I added it. It clears any queued turns and puts the cube back in its solved state. Between my first and second reloads I fixed a code error in the quaternion snapping that runs after each turn. I also set the canvas clear colour to match the dark page background.