let rScale = 1;

let rScaleDir = 1;

let rColor = ["#84faee","#ffadd3"]

let whichColor = 1;

function setup() {

  createCanvas(800, 800);

}

​

function draw() {

  rAngle = rAngle +random(0,8);

  // rScale = rScale+0.02*rScaleDir;

  rScale = map(mouseX,0,width,0,10);

  if (rScale > 2|| rScale <0.05) {

    rScaleDir = rScaleDir*(-1);

    whichColor = (whichColor+1)%2;

    stroke(color(rColor[whichColor]))

  }

​

  background(255,20);// transform the background to translate so that the trace is reserve

​

  push();

  translate(width/2,height/2);

  angleMode(DEGREES);

  rotate(rAngle);

  scale(rScale);

  rectMode(CENTER);

​

  strokeWeight(5);

  noFill();

  rect(0,0,500,500);

  pop();

  push();

  for (let x = 0; x < width; x+= 25) {

    for (let y = 0; y < height; y += 25) {

      noStroke();

      fill(random(1,255));

      ellipse(x,y, random(0,2))

    }

  }

  pop();

​

}