    draw: () ->
       @updateVertexPos()
       super
-      #super @gl.LINE_LOOP


   updateVertexPos: ->
      gl = @gl
 
      # update local vertex
      @getLastLevelVertex ((i, b) ->
         @vertex.splice.apply(

      super
      @vertex = []
      @levelVertex = []
      @normals = []

   setUp: (@triangleVertex) ->
      gl = @gl
      @levelVertex = @levelVertex.concat( @triangleVertex )
      @addLevel(@levelVertex)

      # vertex
