NICE CODING

NICE CODING

// .pde // Processing 3.4 ParticleSystem ps; void setup() { size(540, 750); background(0); ps = new ParticleSystem(); } void draw() { noStroke(); fill(0,10); rect(0,0,width,height); ps.addParticle(); ps.run(); } class ParticleSystem { ArrayList<Particle> particles; ParticleSystem() { particles = new ArrayList<Particle>(); } void addParticle() { for (int i = 0; i < 10; i++) { particles.add(new Particle(random(width), random(height))); } } void run() { for (int i = particles.size()-1; i >= 0; i--) { Particle p = particles.get(i); p.run(); if (p.isDead()) { particles.remove(i); } } } } class Particle { PVector location; PVector velocity; float lifespan; Particle(float x, float y) { location = new PVector(x,y); lifespan = 255.0; } void run() { update(); display(); } void update() { float angle = noise(location.x*.01,location.y*.01)*TAU; velocity = new PVector(sin(angle), cos(angle)); location.add(velocity); lifespan -= 1.0; } void display() { strokeWeight(2); stroke(255, lifespan); point(location.x, location.y); } boolean isDead() { if(location.x > width-120 || location.x < 120){ return true; } if(location.y > height-20 || location.y < 20){ return true; } if (lifespan < 0.0) { return true; } else { return false; } } }