Mandelbrot explorer · mimo-v2.5-pro
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 · 8 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 full-screen interactive Mandelbrot set renderer with: 1. Smooth color gradient 2. Click-and-drag to pan 3. Mouse-wheel to zoom I'll create a single self-contained index.html file with: - A full-screen canvas - JavaScript to compute the Mandelbrot set using Web Workers or direct computation - Smooth coloring using the escape time algorithm with continuous coloring - Mouse interaction for panning and zooming Let me write this as a complete, self-contained HTML file.
/workspace/index.html (8237 bytes)Successfully wrote 8237 bytes to /workspace/index.html
thinking
Let me verify the file was created correctly.
{"command":"wc -l /workspace/index.html && head -5 /workspace/index.html && echo \"...\" && tail -5 /workspace/index.html"}258 /workspace/index.html <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> ... resize(); })(); </script> </body> </html>
thinking
The file is created and looks good. Let me also check there's a minor issue - the `aspect` variable in the wheel handler has a bug. Let me fix it.
Looking at the code more carefully:
```javascript
canvas.addEventListener('wheel', e => {
e.preventDefault();
const W = canvas.width, H = canvas.height;
const aspect = W / aspect; // BUG - this should be W / H
```
Let me fix this.{"edits":[{"newText":" canvas.addEventListener('wheel', e => {\n e.preventDefault();\n const W = canvas.width, H = canvas.height;\n Successfully replaced 1 block(s) in /workspace/index.html.
thinking
Good, now the file should be correct. Let me verify the complete content once more.
Done. `/workspace/index.html` is ready — a single self-contained file (~250 lines) with: **Rendering:** - Full-screen `<canvas>` filling the viewport - Smooth continuous coloring via the normalized iteration count formula - HSL-based multi-band palette (2048 entries with linear interpolation) - Cardioid & period-2 bulb shortcut checks for the main cardioid/bulb areas - 800 max iterations for detail **Interactions:** | Action | Effect | |---|---| | **Click + drag** | Pan the view | | **Mouse wheel** | Zoom in/out toward cursor | | **Double-click** | Zoom in 3× centered on cursor | | **Pinch (touch)** | Zoom on mobile | | **Touch drag** | Pan on mobile | The HUD in the top-left corner shows the current center coordinates and scale so you can track your exploration depth.
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 rendered with pan-by-drag and zoom-by-wheel working, but color gradient is muted brown/black, not very smooth.
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.