Fluid simulation · nemotron-3-ultra-550b-a55b
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
The user wants a real-time fluid simulation on a full-screen canvas with mouse interaction that pushes colored dye through the fluid. This is a classic fluid dynamics simulation using the Navier-Stokes equations, typically implemented using the Jos Stam stable fluids method. I'll create a single HTML file with: 1. Full-screen canvas 2. Fluid simulation using velocity and density fields 3. Mouse/touch interaction to add velocity and dye 4. Colorful dye visualization 5. Real-time animation loop Let me write this as a self-contained index.html file.
/workspace/index.html (17806 bytes)Successfully wrote 17806 bytes to /workspace/index.html
thinking
The file has been created. Let me verify it exists and check if there are any issues.
{"command":"ls -la /workspace/index.html"}-rw-r--r-- 1 node node 17810 Jul 22 17:37 /workspace/index.html
thinking
The file has been created successfully. Let me verify it's a valid HTML file by checking the content briefly.
Created `/workspace/index.html` - a self-contained real-time fluid simulation with: - **Jos Stam's Stable Fluids** solver (Navier-Stokes) at 128×128 simulation resolution - **Higher-res dye field** (512×512) for crisp colorful visuals - **Mouse/touch drag** to push velocity and inject swirling colored dye - **8-color palette** that cycles through red→orange→yellow→green→cyan→blue→purple→pink - **Full-screen canvas** with responsive resize - **Controls**: Drag to interact, `Space` to pause, `C` to clear The simulation uses: - Semi-Lagrangian advection for stability - Diffusion for viscosity - Pressure projection for incompressibility - Bilinear interpolation for rendering - Gamma-corrected tone mapping for vibrant colors Open `index.html` in a browser to run it.
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
Faint dye trace appears only on drag, otherwise screen stays almost entirely black with no visible fluid simulation.
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.