 
     @cprops = cps
     cps
-
 
 
 class SurfaceSpaceSelectHandler

    @commonProps()
    @datgui = new dat.GUI()
    for k, v of @cprops
      continue if k == 'position'
      continue if k == 'design'
      continue if k == 'endpoints'
      continue if k == 'name' and @elements.length > 1
      @datgui.add(@cprops, k)
    true

  hide: () ->

      @datgui = null

  commonProps: () ->
    
    ps = {}
    cps = new Array()

    addProp = (d, k, v) ->
      if !d[k]?
