Fluid simulation · glm-5
Create a real-time fluid simulation on a full-screen canvas where dragging the mouse pushes swirling colored dye through the fluid.
transcript · 4 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, typically based on Jos Stam's "Real-Time Fluid Dynamics for Games" paper or similar approaches. I'll create a fluid simulation that: 1. Uses a full-screen canvas 2. Implements a Navier-Stokes based fluid simulation (simplified) 3. Allows mouse dragging to add velocity and colored dye 4. Creates swirling, colorful effects Key components: - Velocity field (u, v components) - Density/dye field (with color) - Advection, diffusion, and projection steps - Mouse interaction to add forces and dye Let me write a complete self-contained HTML file with the simulation.
/workspace/index.html (26296 bytes)Successfully wrote 26296 bytes to /workspace/index.html
thinking
I've created a real-time fluid simulation with WebGL. Let me verify the file was created correctly.
I've created a full real-time fluid simulation with the following features: **Fluid Simulation Features:** - **WebGL-accelerated** - Uses GPU shaders for smooth real-time performance - **Navier-Stokes based** - Implements advection, divergence, pressure solving, and vorticity confinement - **Full-screen canvas** - Responsive to any window size **Interactive Dye System:** - **Mouse drag** pushes fluid and adds swirling colored dye - **Touch support** for mobile devices - **Random color generation** using HSL color space for vibrant, varied colors - **Auto-splats** - Ambient movement keeps the simulation interesting even without input **Visual Effects:** - Color dissipation for gradual fading - Vorticity confinement to maintain swirling motion - Enhanced color contrast with gamma correction - Multiple initial splats to start with an interesting pattern The simulation uses: - 256x256 resolution for the velocity field - 512x512 resolution for the dye/color field - 20 pressure iterations for stable fluid behavior - Curl-based vorticity to create those satisfying swirl patterns Just drag your mouse across the canvas to push the fluid and add colorful dye trails!
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 dye simulation with colorful swirling smoke that reacts to click and drag with new dye and motion.
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.