Mandelbrot explorer · qwen3.6-flash

Output generated Cost / run $0.0069 Runtime 26.5s

Prompt for this run

Render the Mandelbrot set with a smooth color gradient on a full-screen canvas, with click-and-drag to pan and mouse-wheel to zoom.

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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

modelqwen3.6-flash

vendorQwen

harnesspi-agent

generated2026-08-01

METRICS

runtime26.5s

tokens in12k

tokens out4.1k

cached0

cost / run$0.0069

Transcript · 6 messages

user

Render the Mandelbrot set with a smooth color gradient on a full-screen canvas, with click-and-drag to pan and mouse-wheel to zoom.

assistant

thinking

The user wants a single-page web app that renders the Mandelbrot set with:
1. Smooth color gradient
2. Full-screen canvas
3. Click-and-drag to pan
4. Mouse-wheel to zoom

I need to write everything into one `index.html` file with inline CSS and JS, no external resources. Let me create this.

→ write /tmp/ws/index.html (10715 bytes)

toolResult

Successfully wrote 10715 bytes to /tmp/ws/index.html

assistant

thinking

The file has been written. Let me verify it exists and is complete.

→ bash {"command":"wc -l /tmp/ws/index.html && head -1 /tmp/ws/index.html && tail -1 /tmp/ws/index.html"}

toolResult

337 /tmp/ws/index.html <!DOCTYPE html> </html>

assistant

thinking

The file has been written successfully. Let me verify it's complete and well-formed.

Done — `index.html` is ready at `/tmp/ws/index.html`. Here's what it includes: **Rendering:** - Full-screen canvas with smooth (continuous) Mandelbrot coloring using the escaped iteration count method (log-based smoothing) - Cosine palette color mapping for rich, smooth gradients - Adaptive max iterations that increase as you zoom deeper (up to 2048) - Renders in chunks with yield-to-browser pauses so the UI stays responsive while zooming deep **Interaction:** - **Click & drag** to pan around the complex plane - **Mouse wheel** to zoom (zooms toward cursor position) - Touch support: single-finger pan, pinch-to-zoom - Keyboard shortcuts: `R` reset, `C` cycle colors, `+`/`-` zoom **UI controls:** - "Reset View" button restores the default view - "Cycle Colors" button switches between 8 different color palettes - Info bar at the bottom shows current center coordinates, zoom level, and iteration count