let shapeList = []

let frames = 60;

let time = 0

const TIME_TRIANGLE = 60* 4

​

function setup() {

  createCanvas(400, 240);

  shapeList.push(new Triangle(30, width/2, height/2, shapeList.length % 2 !== 0 ? "black" : "white"))

  // saveGif('myAnim.gif', 8)

}

​

function draw() {

  background(0);

  const executedTime = Math.floor(frameCount/TIME_TRIANGLE)

  if(executedTime > time){

    time = executedTime

    shapeList.push(new Triangle(30, width/2, height/2,   shapeList.length % 2 !== 0 ? "black" : "white"))

  }

  shapeList.forEach(s => {

    s.draw();

  })

​

}