Flow-field particles · deepseek-v4-flash
Using the pre-provided p5.min.js (global p5, instance or global mode), create a full-screen flow-field particle animation: thousands of particles advected by Perlin-noise vectors, leaving fading trails, with colors shifting over time.
transcript · 8 messages
Using the pre-provided p5.min.js (global p5, instance or global mode), create a full-screen flow-field particle animation: thousands of particles advected by Perlin-noise vectors, leaving fading trails, with colors shifting over time.
thinking
The user wants me to create a single-page web app with p5.js that creates a flow-field particle animation. Let me first check if p5.min.js exists in the current directory, then build the index.html file. Let me check the current directory first.
{"command":"ls -la /workspace/p5.min.js 2>/dev/null && echo \"EXISTS\" || echo \"NOT FOUND\""}-rw-r--r-- 1 node node 1034532 Jul 8 00:34 /workspace/p5.min.js EXISTS
thinking
The p5.min.js file exists. Now let me create a self-contained index.html with a full-screen flow-field particle animation. Let me design this: 1. Full-screen canvas 2. Thousands of particles 3. Particles are advected by Perlin noise vectors 4. Fading trails (using a semi-transparent background overlay) 5. Colors shifting over time I'll use global mode p5.js. Key design decisions: - Use `setup()` and `draw()` (global mode) - Canvas fills the window - Create a flow field using `noise()` with changing z-offset for time - Particles have positions, velocities, and colors - Semi-transparent black background overlay for fading trails - Particles wrap around edges - Colors shift over time based on angle, time, and position Let me write the complete file.
/workspace/index.html (3044 bytes)Successfully wrote 3044 bytes to /workspace/index.html
thinking
Let me verify the file is there and well-formed.
{"command":"wc -l /workspace/index.html && head -5 /workspace/index.html && echo \"---\" && tail -5 /workspace/index.html"}126 /workspace/index.html <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> --- resizeCanvas(windowWidth, windowHeight); } </script> </body> </html>
thinking
The file is created and well-formed. Let me give a summary of what was built.
Done — **`/workspace/index.html`** is ready. Here's what it does: **Full-screen flow-field particle animation** with p5.js global mode: | Feature | Detail | |---|---| | **Particles** | 4,000 particles, each one steered by a Perlin-noise vector field | | **Flow field** | 3D noise (`x`, `y`, drifting `z`) produces smoothly evolving curl patterns | | **Trails** | Semi-transparent `background(0, 0, 0, 8)` overlay each frame — particles leave soft fading trails | | **Color cycling** | HSB base hue drifts with `frameCount * 0.0003`; each particle has a random hue offset plus subtle position-based variation | | **Edge wrap** | Particles wrap around all four sides | | **Responsive** | `windowResized()` resizes canvas on the fly | Open with any local server (e.g. `npx serve .` or `python3 -m http.server`) and load `index.html`. No external resources beyond the local `p5.min.js` are fetched.
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
Flow-field particle trails visible but extremely sparse and dim, colors shift slightly with input but overall too faint for a 'thousands of particles' effect.
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.