Mandelbrot explorer · qwen3.5-plus-02-15
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 me to create 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 rendering algorithm - Smooth coloring (using escape time algorithm with fractional iteration count) - Mouse handling for panning (click and drag) - Mouse wheel for zooming - Efficient rendering (possibly using requestAnimationFrame) Let me write this complete file.
/tmp/ws/index.html (6666 bytes)Successfully wrote 6666 bytes to /tmp/ws/index.html
Done! The `index.html` file has been created with a fully self-contained Mandelbrot Set explorer featuring: - **Full-screen canvas** with smooth color gradients using the escape time algorithm - **Click-and-drag** to pan around the fractal - **Mouse wheel** to zoom in/out (zooms toward cursor position) - **Info panel** showing current zoom level and center coordinates - **No external dependencies** - all CSS and JavaScript are inline
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 renders but is very dark/low-contrast; pixel diffs show pan/zoom inputs produced no visible change despite coordinate text updating.
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.