Lorenz attractor · qwen3.5-plus-02-15

Output generated Cost / run $0.0118 Runtime 66.8s

Prompt for this run

Using the pre-provided three.min.js (global THREE), visualize the Lorenz attractor as a glowing 3D butterfly trajectory that draws over time, with orbit-drag camera controls.

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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

modelqwen3.5-plus-02-15

vendorQwen

harnesspi-agent

generated2026-08-01

METRICS

runtime66.8s

tokens in15k

tokens out5.2k

cached0

cost / run$0.0118

Transcript · 6 messages

user

Using the pre-provided three.min.js (global THREE), visualize the Lorenz attractor as a glowing 3D butterfly trajectory that draws over time, with orbit-drag camera controls.

assistant

thinking

The user wants me to create a single-page web app that visualizes the Lorenz attractor using Three.js. The Lorenz attractor is a famous chaotic system that produces a butterfly-shaped trajectory. I need to:

1. Create an index.html file with embedded CSS and JavaScript
2. Use the pre-provided three.min.js library (loaded via script src)
3. Implement the Lorenz attractor equations
4. Create a glowing 3D trajectory that draws over time
5. Add orbit controls for camera manipulation (I'll need to implement basic orbit controls since we can't use external resources)

Let me create this file with:
- Lorenz attractor simulation (dx/dt = σ(y-x), dy/dt = x(ρ-z)-y, dz/dt = xy - βz)
- A glowing line/points visualization
- Custom orbit controls (since we can't load external OrbitControls)
- Animation that draws the trajectory over time

→ write /tmp/ws/index.html (17728 bytes)

toolResult

Successfully wrote 17728 bytes to /tmp/ws/index.html

assistant

thinking

The file has been created successfully. Let me verify it exists:

→ bash {"command":"ls -la /tmp/ws/index.html"}

toolResult

-rw-r--r--. 1 node node 17733 Aug 1 20:13 /tmp/ws/index.html

assistant

Created `/tmp/ws/index.html` - a self-contained Lorenz attractor visualization featuring: **Visual Features:** - 🦋 Glowing 3D butterfly trajectory that draws progressively over time - Colorful gradient trail that shifts through the spectrum - Bright glowing sprite marking the current point position - Subtle background particles for depth perception - Additive blending for a luminous, ethereal effect **Orbit Controls:** - **Left-drag** - Rotate the camera around the attractor - **Scroll** - Zoom in/out (10-200 units range) - **Right-drag** - Pan the view **Interactive Elements:** - Speed slider (1-50) to control animation rate - Reset button to clear and restart the trajectory - Live point counter showing trajectory length The Lorenz equations use classic parameters (σ=10, ρ=28, β=8/3) producing the iconic butterfly shape. The custom shader material creates smooth glowing points with fade-in/fade-out effects.