Rotating icosahedron · minimax-m3
Using the pre-provided three.min.js (global THREE), render a full-screen scene with a rotating icosahedron lit by two colored point lights, orbit-style auto-rotation, and a subtle starfield background.
transcript · 8 messages
Using the pre-provided three.min.js (global THREE), render a full-screen scene with a rotating icosahedron lit by two colored point lights, orbit-style auto-rotation, and a subtle starfield background.
thinking
The user wants a self-contained index.html file that: 1. Uses the pre-provided three.min.js (loaded via `<script src="three.min.js"></script>`) 2. Renders a full-screen scene 3. Features a rotating icosahedron 4. Lit by two colored point lights 5. Orbit-style auto-rotation 6. Subtle starfield background 7. No external resources, no CDNs, no network requests Let me build this. I need to: - Create a full-screen WebGL canvas - Set up a scene with a perspective camera - Add a starfield (using THREE.Points with many small stars) - Add an icosahedron with a material that responds to lights (MeshStandardMaterial or MeshPhongMaterial) - Add two colored point lights - Auto-rotate the camera (orbit-style) around the icosahedron - Also rotate the icosahedron itself - Use Three.js from the local file Let me check the working directory first, then build the file.
{"command":"ls -la /workspace"}total 644 drwxrwxrwx 3 node node 96 Jul 22 16:54 . drwxr-xr-x 1 root root 4096 Jul 22 16:54 .. -rw-r--r-- 1 node node 603445 Jul 22 16:54 three.min.js
thinking
Good, three.min.js is present. Let me build a polished single-file demo: - Full-screen canvas with resize handling - Subtle starfield (THREE.Points with a small canvas-generated circular texture so we get round points, ~2000 stars distributed in a large sphere) - Icosahedron with MeshStandardMaterial (so it responds nicely to point lights), with a slight roughness/metalness for nice highlights - Two colored point lights: one warm (e.g., orange/red) and one cool (e.g., cyan/blue), positioned on opposite sides - Orbit-style auto-rotation: rotate the camera around the y-axis (and slightly up/down via sin) while always looking at the icosahedron. Also spin the icosahedron itself on its own axis. - A subtle ambient light so the shadowed side isn't pitch black - Tone mapping (ACESFilmic) for a nicer look - A vignette via CSS for atmosphere Let me write the file.
I'll build a self-contained Three.js scene with a rotating icosahedron, two colored point lights, a starfield, and orbit-style auto-camera.
/workspace/index.html (9404 bytes)Successfully wrote 9404 bytes to /workspace/index.html
thinking
Let me verify the file is present and quickly sanity-check the content (no external URLs, no separate .css/.js files, three.min.js referenced as a local file).
{"command":"ls -la /workspace && echo \"---\" && rg -n \"https?://|cdn\\.|//unpkg|//cdnjs|googleapis\" /workspace/index.html || echo \"no extotal 656 drwxrwxrwx 4 node node 128 Jul 22 16:55 . drwxr-xr-x 1 root root 4096 Jul 22 16:54 .. -rw-r--r-- 1 node node 9407 Jul 22 16:55 index.html -rw-r--r-- 1 node node 603445 Jul 22 16:54 three.min.js --- no external network references found
Done. `index.html` is in place alongside the pre-provided `three.min.js`, fully self-contained (no CDNs, no separate CSS/JS files). **What you'll see:** - **Full-screen canvas** that resizes with the window and respects devicePixelRatio (capped at 2). - **Icosahedron** (`THREE.IcosahedronGeometry`) with a `MeshStandardMaterial` (metalness 0.55, roughness 0.28, flat shading) so the colored lights produce crisp facet highlights. A faint wireframe shell wraps it for a techy outline. - **Two colored point lights** — warm "ember" (`#ff6a3d`) and cool "glacier" (`#4dd0ff`) — that orbit the icosahedron along a gentle Lissajous, with their intensity softly breathing. Each has a tiny visible "bulb" mesh so you can see where the light is coming from. - **Orbit-style auto-rotation**: the camera continuously circles the icosahedron on a radius of 5.2 with a slow vertical bob, always looking at the origin. The icosahedron also spins on its own x/y axes, and the starfield counter-rotates for parallax. - **Subtle starfield**: 2,200 `THREE.Points` distributed on a large sphere shell, drawn with a canvas-generated radial-gradient sprite, additive blending, and slight per-star color variation (mostly white, some bluish, some warm) at low intensity for that "subtle" feel. - **Atmosphere**: a dark navy background, exponential fog, ACES filmic tone mapping, and a CSS vignette overlay. The HUD legend in the corner names the two light colors. Open `index.html` directly in a browser (or serve the folder) and the scene runs entirely offline against the local `three.min.js`.
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
EVALUATION
Rotating icosahedron with orange/blue point lights orbiting and faint starfield background; animates continuously, minimal reaction to inputs.
Vision grade · anthropic/claude-sonnet-5
MEASUREMENTS
Raw readings from the capture, not a verdict — the grade above is the only judgement. Percentages are how much of the screen changed; the measure under-reports sparse motion on a dark background.