Flow-field particles · qwen3.6-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 · 6 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 full-screen flow-field particle animation using p5.min.js (which is already in the current directory). Let me build a single self-contained index.html file with: 1. CSS in a `<style>` tag for full-screen canvas 2. JS in a `<script>` tag that: - Includes p5.min.js via `<script src="p5.min.js">` - Creates a flow-field particle animation with Perlin noise - Thousands of particles advected by noise vectors - Fading trails effect - Colors shifting over time Let me write this out.
/workspace/index.html (5003 bytes)Successfully wrote 5003 bytes to /workspace/index.html
thinking
Let me verify the file exists and looks correct.
Let me verify the file was written correctly and that `p5.min.js` is in the directory:
{"command":"ls -lh /workspace/index.html /workspace/p5.min.js"}-rw-r--r-- 1 node node 5.5K Jul 8 00:34 /workspace/index.html -rw-r--r-- 1 node node 1011K Jul 8 00:34 /workspace/p5.min.js
thinking
The user asked me to create a full-screen flow-field particle animation with specific requirements: 1. **Single `index.html` file**: Done via `write` → `/workspace/index.html` (5.5K) 2. **All CSS in `<style>` tag and JS in `<script>` tag**: Done. 3. **No external resources/CDNs**: Only `<script src="p5.min.js"></script>` is used, with the local file. 4. **Full-screen**: `createCanvas(windowWidth, windowHeight)` and CSS `overflow: hidden;`. 5. **Thousands of particles**: `NUM_PARTICLES = 4000`. 6. **Adverted by Perlin-noise vectors**: Uses `noise(x * ZOOM + timeOffset * 0.3, y * ZOOM + timeOffset * 0.1)` to compute an angle for the flow field. 7. **Fading trails**: `background(0, 0, 3, TRAIL_ALPHA)` with `TRAIL_ALPHA = 18` draws a semi-transparent black rect to create trailing effects. 8. **Colors shifting over time**: `baseHue = (frameCount * COLOR_SPEED * 360 * 5) % 360` creates a continuously shifting Hue in HSB mode, plus per-particle hue offsets. 9. **Uses the pre-provided `p5.min.js`**: `p5.min.js` is confirmed present (1011K). Everything looks solid. The file is ready. I'll confirm with a brief summary.
All set. Here what's in `/workspace/index.html`: | Feature | Detail | |---|---| | **Particles** | 4,000 particles with individual lifespans (200–600 frames), respawn on death | | **Flow field** | Perlin noise (`zOff`-based 3D noise) mapped to a 3π rotation — gives organic, swirling currents | | **Fading trails** | Each frame a semi-transparent dark mask (`alpha = 18`) is drawn over the canvas, naturally accumulating trails | | **Color shift** | Base hue rotates continuously through the full HSB spectrum; each particle also carries a ±30° hue offset that slowly breathes over its lifetime | | **Full-screen** | Canvas fills the window and re-sizes via `windowResized()` | | **No external network** | Only `<script src="p5.min.js"></script>` references the local file — everything else is inline |
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 with color shifting over time, animates continuously and looks visually appealing.
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.