let x = 0;

​

function setup() {

  createCanvas(400, 400);

  frameRate(10);

  background(66);

}

​

function draw() {

  stroke(255);

  fill(255);

​

  // with point

  // point(x, 200 + sin(y) * 150);

  //

​

  // vertex cheat.  it is only doing dots... not lines

  beginShape();

  for (let i = 0; i < 400; i++) {

    vertex(x + 200, 200 + sin(y) * 150);

  }

  endShape();

​

  y += 0.01;

  x += 0.05;

}

​