Mandelbrot explorer · seed-2.0-code
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 · 6 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
Let me build a Mandelbrot set explorer with smooth coloring, pan/zoom functionality. I'll create a single HTML file with embedded CSS and JavaScript. Key features needed: 1. Full-screen canvas 2. Smooth color gradient for the Mandelbrot set 3. Click-and-drag to pan 4. Mouse wheel to zoom 5. Efficient rendering Let me start by creating the index.html file.
/tmp/ws/index.html (17215 bytes)Successfully wrote 17215 bytes to /tmp/ws/index.html
thinking
The file is created. Let me verify it exists and then let the user know the task is complete.
{"command":"ls -la /tmp/ws/index.html"}-rw-r--r--. 1 node node 17219 Aug 13 01:29 /tmp/ws/index.html
thinking
The Mandelbrot Explorer is ready. The index.html file contains: 1. Full-screen canvas rendering 2. Smooth color gradient using a cosine palette 3. Click-and-drag panning with visual feedback 4. Mouse wheel zoom (with zoom centered on mouse position) 5. Double-click to zoom in on a point 6. Touch pinch-to-zoom support for mobile 7. Adaptive iteration count based on zoom level 8. Smooth coloring algorithm for continuous gradients 9. Responsive UI with coordinate display and loading indicator The app runs completely offline with no external resources.
Created `index.html` - a full-screen Mandelbrot set explorer with: - **Smooth gradient coloring** using continuous coloring algorithm - **Click-and-drag panning** with low-res preview during drag - **Mouse wheel zoom** that zooms toward cursor position - **Double-click** to center and zoom in - **Touch pinch-to-zoom** for mobile devices - Adaptive iteration count based on zoom level - Real-time coordinate display - Loading indicator during renders Open in any browser to run. You can zoom deep into the fractal (up to 10^14x) before hitting floating-point precision limits.
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 renders with smooth blue/green gradient; drag pans and wheel zooms correctly, keyboard has no effect (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.