let total = 500;

let scale = 0.01;

let circleColor;

​

function seenOnCanvas(speck){

  return speck.x >= 0 && speck.x <= width && speck.y >= 0 && speck.y <= height; 

}

​

function setup() {

  createCanvas(windowWidth, windowHeight);

  r = random(0,255); 

  g = random(0,255); 

  b = random(0,255);

    circleColor = color(random(200,255),random(200,255),random(200,255));

  console.log(circleColor);

  for(let i = 0; i < total; ++i){

    particles.push(createVector(random(width), random(height)));

  }

}

​

function draw() {

  fill(circleColor);

  for(speck of particles){

    let a =  map(dist(width/2,height/2,speck.x,speck.y), 0, 200, 400, 0);

    stroke(r,g,b, a);

    //drew the points

    point(speck.x, speck.y);

    //get the noise val

    let n = noise(speck.x * scale, speck.y * scale);

    let angle = TAU * n;

    speck.x += cos(angle);

    speck.y += sin(angle);

    if(!seenOnCanvas(speck)){

      speck.x = random(width);

      speck.y = random(height);

    }

  }

}