let b = angle; 

let direction = false;

function setup() {

  createCanvas(600, 400);

}

​

function draw() {

  background(100, 150, 180);

  birdman ();

  function birdman() {

  push();

  noStroke();

  fill (20);

  //torso

  rect (250, 200, 50, 100);

  //left arm

  push();  

  b+= .1

  translate (250, 210);

  rotate (30+ b);

  rect (0, 0, 20, 90);

    //wave down

  if (b >= 100) {

   direction = true;

    } else {

      direction = false;

    }

  if (direction = true) {

    b *= 1

  } 

  if (direction = false) {

      b *= -1

  }

  pop();

  //right arm

  rect (305, 210, 20, 90);

  //left leg

  rect (250, 300, 20, 90);

  //right leg

  rect (280, 300, 20, 90);

  //head

  ellipse (275, 160, 90, 60);

  //negative space

  noStroke();

  fill(100, 150, 180);

  ellipse (275, 160, 60, 40);

  //beak

  noStroke();

  fill (20);

  triangle(240, 170, 210, 155, 240, 145);  

  //eyeball

  noStroke();

  fill(255);

  ellipse (275, 160, 40, 30);

  //pupil

  noStroke();

  fill(20);

  ellipse (275, 160, 20, 25);

  pop();

  }

}

//https://editor.p5js.org/p5/sketches/Data:_True_and_False