def setup
  background(220)
  ellipseMode(RADIUS)
  fill(255)
  ellipse(50, 50, 30, 30)
  ellipseMode(CENTER)
  fill(100)
  ellipse(50, 50, 30, 30)
end

def setup
  background(220)
  ellipseMode(CORNER)
  fill(255)
  ellipse(25, 25, 50, 50)
  ellipseMode(CORNERS)
  fill(100)
  ellipse(25, 25, 50, 50)
end