​

function polar(cx, cy, angle, dist){

  return {x:cx+cos(angle) * dist, y:cy+sin(angle) * dist}

}

​

function setup() {

  createCanvas(200, 200);

  angleMode(DEGREES)

  noStroke()

  noLoop()

}

​

function draw() {

  background(255);

  let x = 100

  let y = 100

  fill(0)

  circle(x, y, 5)

  // polar(centerX, centerY, angle, distance)

  let point = polar(x, y, theta, 40)

  fill('red')

  circle(point.x, point.y, 5)

  theta += 1

  if (theta > 360){

    theta -= 360

  }

}