Flow-field particles · deepseek-v4-pro
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.
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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.js (global mode). Let me create a self-contained index.html file with: 1. Thousands of particles advected by Perlin noise flow fields 2. Fading trails 3. Colors shifting over time 4. Full-screen canvas 5. Using p5.min.js (already present in the directory) Let me design this carefully: - Use global mode p5.js (no instance mode needed since they said "global p5, instance or global mode") - Create a flow field using Perlin noise - Thousands of particles that follow the flow field vectors - Fading trails (using semi-transparent background or trail rendering) - Color shifting over time (HSB color mode with shifting hue) I'll use: - A grid of flow vectors based on noise() - Many particles with position, velocity - Semi-transparent background for fading trails - HSB color mode for smooth color transitions - Full window canvas Let me write this all into one index.html file.
/workspace/index.html (3831 bytes)Successfully wrote 3831 bytes to /workspace/index.html
thinking
The file has been written. Let me verify it exists and that p5.min.js is also present.
{"command":"ls -lh /workspace/index.html /workspace/p5.min.js"}-rw-r--r-- 1 node node 4.2K Jul 8 00:35 /workspace/index.html -rw-r--r-- 1 node node 1011K Jul 8 00:35 /workspace/p5.min.js
thinking
Both files are present. The index.html is ready.
Both files are in place. Here's what the animation does: **Flow Field** — A grid of Perlin-noise vectors (`noise()`) is recomputed each frame. The noise scrolls in the z-dimension (`zoff`) so the field continuously evolves. **5,000 particles** — Each one: - Samples the nearest flow-field cell and applies the force as acceleration - Has its own base hue and speed cap, giving variety - Wraps around screen edges so no particle is lost **Fading trails** — Instead of erasing with `background()`, a semi-transparent black rectangle is drawn every frame (`TRAIL_ALPHA = 8`). Lower alpha = longer persistence. **Shifting colours** — HSB colour mode is used. A global `hueShift` increments each frame, added to each particle's unique base hue, so colours cycle continuously. Particle brightness and saturation also respond to speed — faster particles glow brighter and more saturated. **Responsive** — `windowResized()` rebuilds the flow-field grid on window resize. The canvas fills the viewport with no scrollbars.
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 animate continuously with color shifts, but appear as one thin wandering ribbon rather than thousands of particles.
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.