var a=1,t=0;//initial a, and reset counter t

function setup() {

  createCanvas(400, 400); //create the canvas

  background(20,60,90); //black background

  strokeWeight(0.1);//thin lines

  fill(0, 250, 250,80)//gradient fill

}

​

function draw() {

  translate(width/2,width/2) //translate the canvas for (0,0)middle

  x1 = cnt; //set x to counter

  y1 = (a*pow((x1),4))/100 //Polynomial y value ax^4

  if(y1>-200 && y1 <200){ //only draw circles if it is on the canvas

    circle(x1*20,y1,5)//draw a circle for a point on the polynomial

    circle(x1*10,y1,5)//draw a circle for a point on the polynomial (modify x)

    circle(x1*5,y1,5)//draw a circle for a point on the polynomial(modify x)

    circle(x1,y1,5)//draw a circle for a point on the polynomial(modify x)

    }

    cnt=cnt+0.2; //increase counter for x

    if (cnt>12){//draw the next polynomial

      newCoeff();// function to change coefficients

    }

}

function newCoeff(){

  a = random(-5,5)//change a

  cnt = -12;//reset cnt

  t = t+1; //increment screen reset counter

  if (t> 10){ 

    //background(0);//reset canvas

    fill(random(255), random(255), random(255),80) //randomize color after 10 rounds

  }

}