def setup 
  createCanvas(100, 100, WEBGL)
  createArrow
end

def draw 
  background(50)
  orbitControl
  lights
  noStroke
  model(@shape)
end

def createArrow 
  beginGeometry
  push do
    rotateX(PI)
    cone(20)
    translate(0, -20, 0)
    cylinder(6, 20)
  end
  @shape = endGeometry
end