Mandelbrot explorer · aion-3.0-mini
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.
transcript · 4 messages
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.
thinking
I always stop after producing the tag. Let me start by analyzing the requirements. The user wants me to build a single-page web app in a file called index.html in /tmp/ws. It needs to render the Mandelbrot set with smooth color gradient on a full-screen canvas. It needs click-and-drag to pan and mouse-wheel to zoom. No external resources, all inline CSS/JS. I need to write this to /tmp/ws/index.html. Let me create a comprehensive implementation. Key features: 1. Full-screen canvas 2. Mandelbrot set rendering 3. Smooth color gradient (using normalized iteration count for smooth coloring) 4. Click-and-drag to pan 5. Mouse-wheel to zoom 6. All inline, no external resources Let me think about the implementation: - Canvas fills the viewport - Mandelbrot calculation: for each pixel, iterate z = z^2 + c until |z| > 2 or max iterations reached - Smooth coloring: use normalized iteration count = n - log2(log2(|z|)) for smooth gradients - Color mapping: map normalized iteration to HSL or using a gradient palette - Pan: track mouse down/move/up, translate the complex plane offset - Zoom: on wheel event, zoom in/out centered on mouse position I'll write a complete, polished implementation.
/tmp/ws/index.html (9443 bytes)Successfully wrote 9443 bytes to /tmp/ws/index.html
thinking
I never include the tags in my final response. The user wants a single-page web app that renders the Mandelbrot set with smooth color gradient on a full-screen canvas, with click-and-drag to pan and mouse-wheel to zoom. I've written the file. Let me check it exists and verify it works roughly. I wrote the file. The user said "End with index.html present." It's present. I should confirm.
The file has been created at `/tmp/ws/index.html`. It's a self-contained single-page app that: - **Renders the Mandelbrot set** on a full-screen canvas with a smooth, multi-band HSL color gradient (2048-color palette) - **Click-and-drag** to pan around the complex plane - **Mouse wheel** to zoom in/out, keeping the point under the cursor fixed - **Touch support** for pinch-to-zoom and one-finger pan on mobile - **Keyboard shortcut**: press `R` to reset the view to the default (-0.5, 0, scale 4.0) - **High-DPI** aware (uses `devicePixelRatio` for crisp rendering) - **No external dependencies** — everything is inline HTML/CSS/JS To view it, open `index.html` in any modern browser.
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
Smooth-colored Mandelbrot set renders correctly; drag pans and wheel zooms work well, keyboard has no effect (expected).
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.