let y = [];

let points = 380;

let radius = 40;

let flowerRadius = 50;

let flowerAmp = 80;

let period = 10;

​

function setup() {

  createCanvas(windowWidth, windowHeight);

  angleMode(DEGREES);

}

​

function draw() {

  background(220);

  translate(width / 2, height / 2);

  noFill();

  beginShape();

  for (let i = 0; i < points; i++) {

    let angle = i / points * 360; // evenly space points

    flowerRadius = flowerAmp * cos(angle * period);

    x[i] = (radius + flowerRadius) * cos(angle);

    y[i] = (radius + flowerRadius) * sin(angle);

    vertex(x[i], y[i]);

  }

  endShape(CLOSE);  

}