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

def draw 
  background(200)
  if keyIsDown(K_1)                # '1' key
    @cam.setPosition(30, 0, 500)
  elsif keyIsDown(K_2)             # '2' key
    @cam.setPosition(0, 0, 500)
  elsif keyIsDown(K_3)             # '3' key
    @cam.setPosition(-30, 0, 500)
  end
  box(20)
end