Fluid simulation · seed-2-1-turbo
Create a real-time fluid simulation on a full-screen canvas where dragging the mouse pushes swirling colored dye through the fluid.
transcript · 6 messages
Create a real-time fluid simulation on a full-screen canvas where dragging the mouse pushes swirling colored dye through the fluid.
thinking
I will create a real-time fluid simulation on full-screen canvas with mouse-responsive swirling colored dye.Jos Stam's stable fluids algorithm will be used to build the simplified, visually appealing real-time fluid simulation. Key features including full-screen support, mouse drag interaction, and a self-contained single HTML file are planned, with an efficient grid-based approach to ensure smooth real-time operation.
/tmp/ws/index.html (12875 bytes)Successfully wrote 12875 bytes to /tmp/ws/index.html
thinking
I will verify the file and check simulation issues. The code implements a stable fluids solver based on Jos Stam's paper, including semi-Lagrangian advection.The simulation code has 8 core features, and I will check the file to verify its rendering correctness.
The file is written. Let me verify it's complete and well-formed:
{"command":"cd /tmp/ws && wc -l index.html && head -5 index.html && echo \"...\" && tail -5 index.html"}454 index.html <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> ... addInitialBlobs(); requestAnimationFrame(step); </script> </body> </html>
Done. I've created `/tmp/ws/index.html` — a fully self-contained real-time fluid simulation. **What it does:** - Full-screen canvas with a **stable fluids** simulation (Jos Stam algorithm) running on a CPU grid — velocity diffusion, advection, and pressure projection for incompressible flow - **Drag with mouse (or touch)** to push swirling colored dye through the fluid - Dye color cycles through the rainbow based on mouse speed - Initial colorful dye blobs are placed on load so there's something to interact with immediately - Dye fades gradually over time for a clean look - Supports both mouse and touch input, and resizes with the window The simulation runs entirely in-browser with no external resources or network calls — just open the file and drag.
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
Fluid simulation shows colored dye blobs idling and reacts to drag/wheel with green swirling dye trails, but keyboard input does nothing.
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.