var centervec

​

function setup() {

  createCanvas(400, 400);

  centervec =createVector(width/2,height/2);

  strokeWeight(2);

  filter(BLUR, 10);

}

​

smoothie = 10;

​

function pentip(t){

  let px = noise(t/smoothie) * width;

  let py = noise(t*2/smoothie) * height;

  let v = createVector(px, py)

  let direction = p5.Vector.sub(v, centervec).setMag(4.7);

​

  lines.push([v, direction])

  push();

  translate(px,py);

  rotate(a);

  triangle(0, 0, -10, 20, 10, 20)

  pop();

​

}

​

var t = 0;

var a = 3.14;

var r = 0;

​

const TA = 0.0002

var thet = 0.0005;

const TB = 0.00005

​

var d    = 0.00005;

​

​

const lines = [];

​

​

function draw() {

  background(222);

​

  pentip(t);

  t += thet;

  for (var i = lines.length-2; i > -1; i--) {

    var [v1, direction] = lines[i]

    var v2 = lines[i+1]

    line(v1.x, v1.y, v2.x, v2.y)

    v2.x = v1.x

    v2.y = v1.y;

    v1.add(direction);

    if (v1.x < 0 || v1.y < 0 || v1.x > width || v1.y > height){

      lines.splice(i,1)

    }

  }

  thet +=d;

   if (thet < TA && thet > TB ){

    d = -d;

  }

  // yeah TODO KEEP IT UPRIGHT

  a = (Math.random() >= 0.5) ?  a+30*d : a-30*d; 

}