let scaleXY = 1;

let colours;

let currColour = 0;

let strołkŁejt = 2;

​

function setup(){

  createCanvas(400, 400);

  background(255);

  colours = [

    color(255,0,0),

    color(0,255,0),

    color(0,0,255)

    ];

}

​

function draw(){

​

  if (mouseIsPressed && scaleXY<=5){

   scaleXY+=0.01; 

  } else if (!mouseIsPressed && scaleXY>1){

   scaleXY-=0.01; 

  }

  scale(scaleXY,scaleXY);

  background(255);

  drawCircle(width/2,height/2,200);

}

​

function drawCircle(x,y,r){

  if (currColour>2){

    currColour = 0;

  } else{

    currColour++;

  }

  switch (currColour){

    case 1: stroke(colours[0]);

      break;

    case 2: stroke(colours[1]);

      break;

    case 3: stroke(colours[2]);

      break;

                    }

  strokeWeight(strołkŁejt);

  ellipse(x, y, r, r);

  if(r > 8) {

    strokeWeight(strołkŁejt/2);

    drawCircle(x + r/2, y, r/2);

    drawCircle(x - r/2, y, r/2);

    strokeWeight(strołkŁejt/4);

    drawCircle(x, y + r/2, r/2);

    drawCircle(x, y - r/2, r/2);

  }

}