genuary3 - glitch from a rose

let n 
let a = 200
let ty = 1
let k
function setup(){
  cnv = createCanvas(500,500)
  background(255)
  angleMode(DEGREES)
  n = int(random(20,50))*2+1
  k = int(random(2,5))*2
  noFill()
}
function draw(){
  background(255,255,255,20)
  translate(width/2,height/2);
  if(k===1){
    t = frameCount/5;
  }else if(ty===1){
    t = frameCount/40;
  }
  
  for(let i = 0;i<n;i++){
    if(ty===0){
      x = (a*cos(t+360/n*i))/(1+sin(t+360/n*i)*sin(t+360/n*i));
      y = (a*sin(t+360/n*i)*cos(t+360/n*i))/(1+sin(t+360/n*i)*sin(t+360/n*i));
    }
    if(ty===1){
      x = a*cos(k*(t+360/n*i))*cos(t+360/n*i)
      y = a*cos(k*(t+360/n*i))*sin(t+360/n*i)
    }
    
    circle(x,y,4+10*abs(cos(360/n*i)))
    if(t%20===int(random(0,5))){
      push()
      noStroke()
      
      circle(x,y,random(100))
      
      background(random(200))
      frameCount = frameCount+ int(random(-50,50))
      pop()
    }
  }
}

function mousePressed(){
  setup()
  draw()
  
}