All tests

Exhibit No. 016 · Animation

Particles you steer with your hands

A Three.js particle system that morphs into hearts, flowers or Saturn and grows when you open your hands in front of the camera.

Prompt

> Create a real-time interactive 3D particle system with Three.js.

requirements:

1. Control the scaling and expansion of the particle group by detecting the tension and closing of both hands through the camera.

2. Provide panels that can choose hearts/flowers/saturn/Buddha statues/fireworks and other templates

3. Support the colour selector to adjust the particle colour

4. Particles need to respond to gesture changes in real time. The interface is simple and modern.

5. The interface is simple and modern

What it tests

Hand tracking from a webcam, particle morphing between shapes and a clean control panel.

Origin

@EHuanglu · 2025

1.3M views on the original post

Difficulty

●●●

Results

Claude Opus 5.5

Run on 2026-10-19Open the raw answer

The museum frame cannot use your camera, so the answer falls back to the mouse: move it up and down to open and close the shape. Open the raw answer to try it with your hands.

Test conditions

One attempt per test, with no edits after running. Where a first attempt didn’t work, the test was answered once more and the exhibit says so; answers that still don’t work are not shown. Run inside a Claude Code agent session, which includes its own system prompt, rather than the raw API.

All results for Claude Opus 5.5

Save the answer as a .html file and open it in a browser to compare it with the one above.

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