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Rotating icosahedron · muse-spark-1.3

Output generated Cost / run $0.1560 Runtime 96.3s

Prompt for this run

Build a full-screen 3D scene featuring a rotating icosahedron using the provided Three.js library. Use HTML, CSS, and JavaScript as needed. Write it to `index.html` in the current working directory using your file tools. Inline your own CSS and JavaScript. Do not use external assets, CDNs, or network requests. Use the provided `three.min.js` (global `THREE`) through a plain local script tag; the runner will inline it into the final artifact. Required behavior: - Show an icosahedron centered in view, with a material that visibly responds to two point lights of different colors. - Rotate the object continuously about at least two axes. Independently move the camera slowly around the object while keeping it in view. - Add a subtle procedural starfield behind the object. Keep lights, object, and stars distinguishable without external textures. - Provide Pause/Resume and Reset. Pause freezes both object and camera animation; Reset restores their initial transforms. - Resize the renderer and camera aspect ratio to the viewport. Use only the provided core global THREE library, without additional controls or postprocessing addons. Verify: Sample several moments to inspect the object orientation, camera movement, and colored lighting. Pause and check that both motions freeze, then reset and compare the object and camera with their initial poses.

⛨ 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

modelmuse-spark-1.3
vendorMeta
harnesspi 0.87.1 · browser iteration
generated2026-10-09

METRICS

runtime96.3s
tokens in182k
tokens out6.9k
cached92k
cost / run$0.1560
Transcript · 25 messages
system

user

Build a full-screen 3D scene featuring a rotating icosahedron using the provided Three.js library. Use HTML, CSS, and JavaScript as needed. Write it to `index.html` in the current working directory using your file tools. Inline your own CSS and JavaScript. Do not use external assets, CDNs, or network requests. Use the provided `three.min.js` (global `THREE`) through a plain local script tag; the runner will inline it into the final artifact. Required behavior: - Show an icosahedron centered in view, with a material that visibly responds to two point lights of different colors. - Rotate the object continuously about at least two axes. Independently move the camera slowly around the object while keeping it in view. - Add a subtle procedural starfield behind the object. Keep lights, object, and stars distinguishable without external textures. - Provide Pause/Resume and Reset. Pause freezes both object and camera animation; Reset restores their initial transforms. - Resize the renderer and camera aspect ratio to the viewport. Use only the provided core global THREE library, without additional controls or postprocessing addons. Verify: Sample several moments to inspect the object orientation, camera movement, and colored lighting. Pause and check that both motions freeze, then reset and compare the object and camera with their initial poses.

assistant
thinking

Building your rotating icosahedron scene — full-screen 3D with colored lights and starfield.

→ bash {"command":"ls -la && head -c 500 three.min.js 2>&1 | cat; echo \"---\"; ls -lh"}
toolResult

total 604 drwx------ 3 node node 4096 Oct 9 06:48 . drwxrwxrwt 6 root root 4096 Oct 9 06:48 .. drwxr-xr-x 3 node node 4096 Oct 9 06:48 .home -rw-r--r-- 1 node node 603445 Oct 9 06:48 three.min.js /** * @license * Copyright 2010-2021 Three.js Authors * SPDX-License-Identifier: MIT */ !function(t,e){"object"==typeof exports&&"undefined"!=typeof module?e(exports):"function"==typeof define&&define.amd?define(["exports"],e):e((t="undefined"!=typeof globalThis?globalThis:t||self).THREE={})}(this,(function(t){"use strict";const e="128",n=100,i=300,r=301,s=302,a=303,o=304,l=306,c=307,h=1e3,u=1001,d=1002,p=1003,m=1004,f=1005,g=1006,v=1007,y=1008,x=1009,_=1012,w=1014,b=1015,M=1016,S=1020,T=102--- total 592K -rw-r--r-- 1 node node 590K Oct 9 06:48 three.min.js

assistant
thinking
Designing a threejs scene with full-screen canvas, UI controls, icosahedron geometry with flat-shaded material, and two colored point lights.Adding emissive sphere markers for lights, procedural starfield, and pause/reset controls.

Verified the local Three.js library — now crafting the full-screen scene.

→ write index.html (10309 bytes)
toolResult

Successfully wrote to index.html

assistant
thinking
→ browser {"action":"reload"}
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-0x20d40016de00]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels","warning: [.WebGL-0x20d40016de00]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels","warning: [.WebGL-0x20d40016de00]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels","warning: [.WebGL-0x20d40016de00]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels (this message will no longer repeat)"],"dom":"🔷 Rotating Icosahedron RUNNING\n\nStandard material lit by two colored point lights (warm + cool). Drag-free auto orbit camera.\n\n⏸ Pause\n⟲ Reset\nwarm light\ncool light\nstars\nobj rot xyz: 0.53, 1.04, 0.21\ncam pos xyz: 3.93, 1.58, 3.40\ncam angle: 0.71 rad t=0.5s 23 fps\n▶ animating obj + camera\nSpace = pause/resume  •  R = reset  •  auto-resizes to viewport","images":"attached"}

assistant
thinking
Adjusting star point size and shape by reducing size and noting procedural texture option for round points.

Initial view looks good but lighting is too one-sided and stars too chunky — tuning that, then verifying pause/reset.

→ edit {"edits":[{"newText":" var lightWarm = new THREE.PointLight(WARM, 2.2, 0, 2);\n lightWarm.position.set(4.2, 2.0, 2.8);\n scene.add(lightW
toolResult

Successfully replaced 2 block(s) in index.html.

assistant
→ browser {"action":"reload"}
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-0xc3400124e00]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels","warning: [.WebGL-0xc3400124e00]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels","warning: [.WebGL-0xc3400124e00]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels","warning: [.WebGL-0xc3400124e00]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels (this message will no longer repeat)"],"dom":"🔷 Rotating Icosahedron RUNNING\n\nStandard material lit by two colored point lights (warm + cool). Drag-free auto orbit camera.\n\n⏸ Pause\n⟲ Reset\nwarm light\ncool light\nstars\nobj rot xyz: 0.50, 0.98, 0.20\ncam pos xyz: 3.98, 1.56, 3.35\ncam angle: 0.70 rad t=0.5s 0 fps\n▶ animating obj + camera\nSpace = pause/resume  •  R = reset  •  auto-resizes to viewport","images":"attached"}

assistant
thinking

Both colored lights are now visible — I'll verify the animation, pause freeze, and reset behavior.

→ browser {"action":"motion"}
toolResult

Frame 1, +0ms

[Browser image supplied to model]

Frame 2, +730ms

[Browser image supplied to model]

Frame 3, +1470ms

[Browser image supplied to model]

Frame 4, +2207ms

[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-0xc3400124e00]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels","warning: [.WebGL-0xc3400124e00]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels","warning: [.WebGL-0xc3400124e00]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels","warning: [.WebGL-0xc3400124e00]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels (this message will no longer repeat)"],"dom":"🔷 Rotating Icosahedron RUNNING\n\nStandard material lit by two colored point lights (warm + cool). Drag-free auto orbit camera.\n\n⏸ Pause\n⟲ Reset\nwarm light\ncool light\nstars\nobj rot xyz: 4.06, 6.48, 1.37\ncam pos xyz: -2.73, 1.18, 4.43\ncam angle: 2.12 rad t=6.9s 30 fps\n▶ animating obj + camera\nSpace = pause/resume  •  R = reset  •  auto-resizes to viewport","images":"attached"}

assistant
thinking

Motion confirms rotation and orbit — now testing pause freeze.

→ browser {"action":"click","x":113,"y":110}
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-0xc3400124e00]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels","warning: [.WebGL-0xc3400124e00]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels","warning: [.WebGL-0xc3400124e00]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels","warning: [.WebGL-0xc3400124e00]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels (this message will no longer repeat)"],"dom":"🔷 Rotating Icosahedron PAUSED\n\nStandard material lit by two colored point lights (warm + cool). Drag-free auto orbit camera.\n\n▶ Resume\n⟲ Reset\nwarm light\ncool light\nstars\nobj rot xyz: 6.15, 9.71, 2.05\ncam pos xyz: -5.11, 0.84, 0.95\ncam angle: 2.96 rad t=10.7s 27 fps\n⏸ frozen (obj + camera)\nSpace = pause/resume  •  R = reset  •  auto-resizes to viewport","images":"attached"}

assistant
thinking
→ browser {"action":"motion"}
toolResult

Frame 1, +0ms

[Browser image supplied to model]

Frame 2, +755ms

[Browser image supplied to model]

Frame 3, +1517ms

[Browser image supplied to model]

Frame 4, +2279ms

[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-0xc3400124e00]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels","warning: [.WebGL-0xc3400124e00]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels","warning: [.WebGL-0xc3400124e00]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels","warning: [.WebGL-0xc3400124e00]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels (this message will no longer repeat)"],"dom":"🔷 Rotating Icosahedron PAUSED\n\nStandard material lit by two colored point lights (warm + cool). Drag-free auto orbit camera.\n\n▶ Resume\n⟲ Reset\nwarm light\ncool light\nstars\nobj rot xyz: 6.15, 9.71, 2.05\ncam pos xyz: -5.11, 0.84, 0.95\ncam angle: 2.96 rad t=10.7s 25 fps\n⏸ frozen (obj + camera)\nSpace = pause/resume  •  R = reset  •  auto-resizes to viewport","images":"attached"}

assistant
thinking

Pause freeze confirmed — both object and camera held still. Now checking reset.

→ browser {"action":"click","x":265,"y":110}
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-0xc3400124e00]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels","warning: [.WebGL-0xc3400124e00]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels","warning: [.WebGL-0xc3400124e00]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels","warning: [.WebGL-0xc3400124e00]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels (this message will no longer repeat)"],"dom":"🔷 Rotating Icosahedron PAUSED\n\nStandard material lit by two colored point lights (warm + cool). Drag-free auto orbit camera.\n\n▶ Resume\n⟲ Reset\nwarm light\ncool light\nstars\nobj rot xyz: 0.25, 0.60, 0.12\ncam pos xyz: 4.29, 1.40, 2.94\ncam angle: 0.60 rad t=0.0s 27 fps\n⏸ frozen (obj + camera)\nSpace = pause/resume  •  R = reset  •  auto-resizes to viewport","images":"attached"}

assistant
thinking
→ browser {"action":"click","x":113,"y":110}
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-0xc3400124e00]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels","warning: [.WebGL-0xc3400124e00]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels","warning: [.WebGL-0xc3400124e00]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels","warning: [.WebGL-0xc3400124e00]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels (this message will no longer repeat)"],"dom":"🔷 Rotating Icosahedron RUNNING\n\nStandard material lit by two colored point lights (warm + cool). Drag-free auto orbit camera.\n\n⏸ Pause\n⟲ Reset\nwarm light\ncool light\nstars\nobj rot xyz: 0.40, 0.83, 0.17\ncam pos xyz: 4.11, 1.50, 3.19\ncam angle: 0.66 rad t=0.3s 33 fps\n▶ animating obj + camera\nSpace = pause/resume  •  R = reset  •  auto-resizes to viewport","images":"attached"}

assistant
thinking

Resume works from the reset pose — doing a final file check.

→ bash {"command":"ls -lh index.html three.min.js && grep -o 'src=\"[^\"]*\"' index.html && echo \"---external check---\" && (grep -Ei 'https?://|c
toolResult

-rw-r--r-- 1 node node 11K Oct 9 06:49 index.html -rw-r--r-- 1 node node 590K Oct 9 06:48 three.min.js src="three.min.js" ---external check--- no external/addon refs ---resize check--- 65:<div id="hint">Space = pause/resume &nbsp;•&nbsp; R = reset &nbsp;•&nbsp; auto-resizes to viewport</div> 79: renderer.setSize(window.innerWidth, window.innerHeight); 212: window.addEventListener('resize', function () { 214: camera.updateProjectionMatrix(); 215: renderer.setSize(window.innerWidth, window.innerHeight);

assistant
thinking

Done. `index.html` is saved (11KB) with `<script src="three.min.js">`, no external/addon refs. **Scene:** full-screen `IcosahedronGeometry` with `MeshStandardMaterial` (flat-shaded) centered in view, lit by warm orange (`0xff6a3d`) and cool blue (`0x3da9ff`) point lights + faint ambient, each light marked by a small colored sphere so lights stay distinguishable. Procedural starfield = 2 `THREE.Points` layers (~1800 verts, random shell 25–90, varied brightness, no textures). Object spins on 3 axes; camera independently orbits (`camAngle += 0.22·dt`, height bob, `lookAt(0,0,0)`). Resize handler updates aspect + renderer size. Only global `THREE`, no controls/postprocessing. **Verified in browser:** - Running motion frames: obj rot changed (e.g. 2.80→4.01), cam angle 1.62→2.11 rad with position swing, facets showing both orange and blue lighting simultaneously — screenshot-confirmed. - Pause click → status PAUSED, telemetry `6.15, 9.71, 2.05 / cam -5.11,0.84,0.95 / angle 2.96` identical across 4 motion frames (~2.3s) — both motions frozen. - Reset click while paused → `0.25, 0.60, 0.12 / angle 0.60 / t=0.0s`, matching initial transforms — screenshot-confirmed. - Resume click → animation restarts from reset pose (`t=0.3s`). Console shows only sandbox/ReadPixels perf warnings, no errors. **Unverified:** actual window-resize event (code present but no viewport-resize test run); long-term drift/clipping at extreme orbit angles.