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Mandelbrot explorer · gpt-5.6-luna

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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transcript · 4 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
**Planning index.html creation**

I need to create an index.html file and inspect the directory, though it might not be necessary. I want to make it polished, with a fullscreen canvas that is responsive and has a smooth gradient and interactions. Maybe I should consider using a performance worker? It’ll be a single file with JavaScript rendering per pixel for the gradient. Ensuring Device Pixel Ratio is important, and I need to think about drag and animation rendering, possibly using requestAnimationFrame for smoothness. I'll focus on Mandelbrot smooth coloring and palette interpolation as well.
write /tmp/ws/index.html (6982 bytes)
toolResult

Successfully wrote 6982 bytes to /tmp/ws/index.html

assistant

Created `/tmp/ws/index.html` with: - Full-screen canvas Mandelbrot rendering - Smooth continuous color gradient - Click-and-drag panning - Mouse-wheel zoom centered on the cursor - Reset view button - Responsive resizing - No external resources or network requests

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

modelgpt-5.6-luna
vendorOpenAI
harnesspi-agent
generated2026-08-01

EVALUATION

4/5 working

Smooth-colored Mandelbrot set renders nicely; drag pans and wheel zooms correctly, keyboard has no effect (as expected, not required).

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.

idle motion0.0%
on click0.0%
on drag25.7%
on wheel8.2%
on enter + space0.0%
on arrow keys0.0%
on w/a/s/d0.0%
frame spread13.7 / 255
console errors0
js errors none

METRICS

runtime20.3s
tokens in6
tokens out2.6k
cached2.3k
cost / run$0.0093