def setup 
  createCanvas(100, 100, WEBGL)
  normalMaterial
  @cam = createCamera
end

def draw 
  background(200)
  if keyIsDown(49)                # '1' key
    @cam.setPosition(30, 0, 80)
  elsif keyIsDown(50)             # '2' key
    @cam.setPosition(0, 0, 80)
  elsif keyIsDown(51)             # '3' key
    @cam.setPosition(-30, 0, 80)
  end
  box(20)
end