Fluid simulation · qwen3-vl-8b-instruct
Output generated Cost / run $0.0029 Runtime 55.3s
Prompt for this run
Build an interactive 2D fluid-and-dye simulation on a full-screen canvas. Use HTML, CSS, and JavaScript as needed. Write it to `index.html` in the current working directory using your file tools. Inline your own CSS and JavaScript. Do not use external assets, CDNs, or network requests. No third-party libraries are provided. Required behavior: - Maintain a velocity field and a colored dye field. Advect dye through the moving fluid so it forms persistent swirling flow; a collection of independent fading particles is not sufficient. - Dragging injects dye and momentum in the drag direction. Momentum and dye remain visible after the pointer is released and gradually dissipate. Approximate fluid behavior is acceptable; choose the numerical method and Canvas 2D or WebGL implementation. - Seed the initial scene with a small amount of colored dye and motion so the simulation is visible on load. - Provide a color selector, Pause/Resume, and Clear. Clear removes dye and resets velocity; the next drag can start a new flow. - Bound simulation resolution and work per frame so controls remain responsive at a 1200 by 800 viewport. Verify: Drag through the canvas and sample the flow after release. Check that dye follows the drag, continues swirling, and responds to a second drag in another direction. Use Clear, then drag again to check that a fresh flow can start.
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
METRICS
Transcript · 5 messages
Build an interactive 2D fluid-and-dye simulation on a full-screen canvas. Use HTML, CSS, and JavaScript as needed. Write it to `index.html` in the current working directory using your file tools. Inline your own CSS and JavaScript. Do not use external assets, CDNs, or network requests. No third-party libraries are provided. Required behavior: - Maintain a velocity field and a colored dye field. Advect dye through the moving fluid so it forms persistent swirling flow; a collection of independent fading particles is not sufficient. - Dragging injects dye and momentum in the drag direction. Momentum and dye remain visible after the pointer is released and gradually dissipate. Approximate fluid behavior is acceptable; choose the numerical method and Canvas 2D or WebGL implementation. - Seed the initial scene with a small amount of colored dye and motion so the simulation is visible on load. - Provide a color selector, Pause/Resume, and Clear. Clear removes dye and resets velocity; the next drag can start a new flow. - Bound simulation resolution and work per frame so controls remain responsive at a 1200 by 800 viewport. Verify: Drag through the canvas and sample the flow after release. Check that dye follows the drag, continues swirling, and responds to a second drag in another direction. Use Clear, then drag again to check that a fresh flow can start.
I'll build an interactive 2D fluid-and-dye simulation as requested. This will be a full-screen canvas with fluid dynamics and dye advection.
/tmp/job-3ISKSq/index.html (15431 bytes)Successfully wrote to /tmp/job-3ISKSq/index.html
I've created the interactive 2D fluid-and-dye simulation as requested. The implementation includes: 1. A full-screen canvas with fluid dynamics and dye advection 2. Mouse dragging to inject dye and momentum in the drag direction 3. Dye that follows the flow, continues swirling after release, and gradually dissipates 4. Color selector, Pause/Resume, and Clear buttons 5. Initial seeding of dye and motion for visible simulation on load The simulation uses a simple grid-based approach with Euler integration for fluid flow and upwind scheme for dye advection. The code is self-contained in a single HTML file with inline CSS and JavaScript. To verify the functionality: - Drag through the canvas and sample the flow after release - Check that dye follows the drag, continues swirling, and responds to a second drag in another direction - Use Clear, then drag again to check that a fresh flow can start The implementation should be responsive at a 1200 by 800 viewport as required. Note: Since I cannot run the browser or interact with the UI directly in this environment, I've provided the complete implementation. You can save this file and open it in a browser to test all the required functionality. The simulation should work as described with the specified features.