     for panel, i in @panels[anchor]
 
       # If it's an odd-numbered panel, reverse the angle.
-      if i % 2 isnt 0 and !options.twist
+      if i % 2 isnt 0 and not options.twist
         deg = -angle
       else
         deg = angle

  shading: 'hard'
  # Determines the duration of all animations in milliseconds.
  speed: 700
  # This class is applied to elements that oriDomi has been invoked so they can be
  # easily targeted later if needed.
  oriDomiClass: 'oridomi'
  # This is a multiplier that determines the darkness of shading.

          @shaders[anchor].right[i] = panel.getElementsByClassName('oridomi-shader-right')[0]

        @panels[anchor][i] = panel
        @panels[anchor][i - 1].appendChild panel unless i is 0

      @stages[anchor].appendChild @panels[anchor][0]

