Mandelbrot explorer · qwen3.5-397b-a17b
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
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 create a self-contained index.html file with all CSS and JS inline. Let me build this step by step: 1. HTML structure with a full-screen canvas 2. CSS for full-screen display 3. JavaScript for: - Mandelbrot set calculation with smooth coloring - Canvas rendering - Mouse event handling for pan and zoom - Performance optimization (maybe using requestAnimationFrame and chunked rendering) Let me write this complete file.
/tmp/ws/index.html (10566 bytes)Successfully wrote 10566 bytes to /tmp/ws/index.html
thinking
The file has been created successfully. Let me verify it exists and provide a summary to the user.
Created `/tmp/ws/index.html` - a self-contained Mandelbrot set explorer with: **Features:** - **Smooth color gradient** using escape time algorithm with HSL cycling through purple→blue→cyan→green→yellow→red - **Full-screen canvas** that adapts to window size - **Click-and-drag panning** to explore the fractal - **Mouse-wheel zooming** that zooms toward the cursor position - **Touch support** for mobile devices - **Double-click to reset** to the default view - **Dynamic iteration count** that increases with zoom level for better detail - **Info panel** showing center coordinates, zoom level, and iterations **Controls:** - Drag to pan - Scroll to zoom (in/out) - Double-click to reset view Open the file in a browser to explore the Mandelbrot set!
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
Mandelbrot set with purple/pink gradient renders correctly; drag pans and wheel zooms, but click and keyboard have no effect.
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.