/*
// Interactive Particle Generator
// Coding Challenge #particleTrain
// Diego de la Fuente Curaqueo
// Santiago de Chile, 2017
*/
let particulas = [];
let mic, miclvl;
function setup() {
createCanvas(windowWidth, windowHeight, P2D);
let p = new Particula();
for (let i = 0; i < 200; i++) {
particulas[i] = new Particula();
}
mic = new p5.AudioIn()
mic.start();
miclvl=0;
}
function draw() {
background(0);
miclvl = constrain(lerp(miclvl, mic.getLevel() * 1.5, .6), 0, 1);
for (let i = 0; i < particulas.length; i++) {
particulas[i].mostrar();
particulas[i].animar();
particulas[i].setPorte(miclvl*50);
particulas[i].reaparecer(mouseX, mouseY);
}
}
class Particula {
constructor() {
this.pos = createVector(width / 2, height / 2);
this.vel = createVector(random(-3, 3), random(-3, 3));
this.acel = createVector(1, 1);
this.forma = int(random(100));
this.rot = random(0, 45);
this.rotInc = random(-1, 1);
this.diam = random(10, 30);
this.rd = random(20);
this.alpha = random(24, 48);
this.color = color(0, random(127, 196), random(196, 255), this.alpha);
}
mostrar() {
noStroke();
fill(this.color);
push();
translate(this.pos.x, this.pos.y);
rotate(this.rot);
if (this.forma > 50) {
rectMode(CENTER);
rect(0, 0, this.diam, this.diam);
}else{
ellipseMode(CENTER);
ellipse(0, 0, this.diam, this.diam+this.rd);
}
pop();
this.rot += this.rotInc;
}
animar() {
this.acel.set(random(-2, 2), random(-2, 2));
this.vel.add(this.acel.x, this.acel.y);
this.pos.add(this.vel.x, this.vel.y);
this.diam -= this.rd;
this.diam = constrain(this.diam, 0, 50);
}
reaparecer(_x, _y) {
//evalua condiciones para reaparecer (fuera de canvas o demasiado pequeño)
let fuera = boolean((this.pos.x > width + this.diam
|| this.pos.x < 0 - this.diam
&& this.pos.y > height + this.diam
|| this.pos.y < 0 - this.diam)
|| this.diam < 1)
//reconstruye la partícula
if (fuera) {
this.pos.set(_x, _y);
this.vel.set(random(-2, 2), random(-2, 2));
this.acel.set(1, 1);
this.rot = random(0, 45);
this.rotInc = random(-1, 1);
this.diam = random(10, 30);
this.rd = random(20);
this.forma = int(random(100));
}
}
setPorte(tam){
this.diam += tam;
}
}