//https://programmingdesignsystems.com

​

function setup() {

​

  createCanvas(600, 500);

  background(240);

​

  fill(40);

  noStroke();

​

  beginShape();

  vertex(0, height);

  vertex(width * 0.2, height * 0.4);

  vertex(width * 0.35, height * 0.6);

  vertex(width * 0.50, height * 0.2);

  vertex(width * 0.70, height * 0.5);

  vertex(width * 0.85, height * 0.3);

  vertex(width, height);

  endShape();

​

  noLoop();

}