const PARTICLE_COUNT = 450; let particles = []; let attractors = []; let ripples = []; function setup() { createCanvas(windowWidth, windowHeight); colorMode(HSB, 360, 100, 100, 100); for (let i = 0; i < PARTICLE_COUNT; i++) { particles.push(new Particle()); } for (let i = 0; i < 4; i++) { attractors.push(new Attractor(i)); } } function draw() { blendMode(BLEND); background(230, 40, 6, 18); for (let a of attractors) { a.update(); } for (let i = ripples.length - 1; i >= 0; i--) { ripples[i].update(); ripples[i].display(); if (ripples[i].isDead()) { ripples.splice(i, 1); } } blendMode(ADD); for (let p of particles) { p.applyForces(attractors, ripples); p.update(); p.display(); } } function mousePressed() { ripples.push(new Ripple(mouseX, mouseY)); } function mouseDragged() { if (frameCount % 4 === 0) { ripples.push(new Ripple(mouseX, mouseY, 40)); } } function windowResized() { resizeCanvas(windowWidth, windowHeight); } class Particle { constructor() { this.pos = createVector(random(width), random(height)); this.vel = p5.Vector.random2D().mult(random(0.5, 2)); this.acc = createVector(0, 0); this.maxSpeed = random(2.5, 5); this.baseHue = random(160, 290); this.hue = this.baseHue; this.size = random(1.5, 3.5); this.history = []; this.maxHistory = floor(random(6, 14)); } applyForces(attractorList, rippleList) { let force = createVector(0, 0); for (let a of attractorList) { let dir = p5.Vector.sub(a.pos, this.pos); let d = constrain(dir.mag(), 20, 600); dir.normalize(); let strength = (a.strength * 60) / (d * d); dir.mult(strength); force.add(dir); } if (mouseIsPressed || (mouseX > 0 && mouseX < width && mouseY > 0 && mouseY < height)) { let mPos = createVector(mouseX, mouseY); let mDir = p5.Vector.sub(mPos, this.pos); let mDist = mDir.mag(); if (mDist < 250 && mDist > 5) { mDir.normalize(); let mStrength = map(mDist, 0, 250, 0.4, 0); if (mouseIsPressed) mStrength *= -1.5; force.add(mDir.mult(mStrength)); } } for (let r of rippleList) { let rDir = p5.Vector.sub(this.pos, r.pos); let rDist = rDir.mag(); let ringDist = abs(rDist - r.radius); if (ringDist < 25) { rDir.normalize(); let push = map(ringDist, 0, 25, 1.2, 0) * (r.life / r.maxLife); force.add(rDir.mult(push)); this.hue = (this.hue + 40) % 360; } } let n = noise(this.pos.x * 0.003, this.pos.y * 0.003, frameCount * 0.005); let angle = n * TWO_PI * 2; let flow = p5.Vector.fromAngle(angle).mult(0.08); force.add(flow); this.acc.add(force); } update() { this.vel.add(this.acc); this.vel.limit(this.maxSpeed); this.pos.add(this.vel); this.acc.mult(0); this.history.push(this.pos.copy()); if (this.history.length > this.maxHistory) { this.history.shift(); } this.hue = lerp(this.hue, this.baseHue, 0.02); if (this.pos.x < 0) this.pos.x = width; if (this.pos.x > width) this.pos.x = 0; if (this.pos.y < 0) this.pos.y = height; if (this.pos.y > height) this.pos.y = 0; } display() { noFill(); for (let i = 0; i < this.history.length - 1; i++) { let p1 = this.history[i]; let p2 = this.history[i + 1]; if (p1.dist(p2) > 40) continue; let alpha = map(i, 0, this.history.length, 10, 85); stroke(this.hue, 80, 100, alpha); strokeWeight(map(i, 0, this.history.length, 0.5, this.size)); line(p1.x, p1.y, p2.x, p2.y); } noStroke(); fill(this.hue, 50, 100, 90); circle(this.pos.x, this.pos.y, this.size * 1.5); } } class Attractor { constructor(offset) { this.offset = offset * 1000; this.pos = createVector(0, 0); this.strength = random(0.8, 1.8); } update() { let t = frameCount * 0.003; this.pos.x = map(noise(t + this.offset), 0, 1, width * 0.1, width * 0.9); this.pos.y = map(noise(t + 500 + this.offset), 0, 1, height * 0.1, height * 0.9); } } class Ripple { constructor(x, y, maxRadius = 120) { this.pos = createVector(x, y); this.radius = 0; this.maxRadius = maxRadius; this.maxLife = 40; this.life = this.maxLife; } update() { this.radius += this.maxRadius / this.maxLife; this.life--; } isDead() { return this.life <= 0; } display() { let alpha = map(this.life, 0, this.maxLife, 0, 60); noFill(); stroke(45, 90, 100, alpha); strokeWeight(1.5); circle(this.pos.x, this.pos.y, this.radius * 2); } }

Gemini 3.8 Flash

Bioluminescent Constellation Swarm