     @startRendering()
     @startUpdating()
     
-  requestUpdateFrame: ->
-    currTime = new Date().getTime()
-    timeToCall = Math.max 0, @updateSpeed - (currTime - (@_requestUpdateLastTime || 0))
-    @_updateHandle = setTimeout @_updateFunc, timeToCall
-    @_requestUpdateLastTime = currTime + timeToCall
-    
-  abortUpdateFrame: ->
-    clearTimeout @_updateHandle if @_updateHandle isnt null
-    @_updateHandle = null
-  
   requestRenderFrame: ->
     if Jax.useRequestAnimFrame and @useRequestAnimFrame
       @_requestedAnimFrame = true

        @stopUpdating()
        false
    
    @_updateFunc = =>
      timechange = @refreshUPS()
      @update timechange
      if @isUpdating() then @requestUpdateFrame()
      
    @_renderFunc = (time) =>
      # deal with time in seconds, not ms
      time *= 0.001
      @_renderStartTime = time if @_renderStartTime is null
      @uptime = time - @_renderStartTime
      if @_calculateFrameRate then @refreshFPS()
      @render()
      if @isRendering() then @requestRenderFrame()
      

    
  stopUpdating: ->
    return unless @isUpdating()
    @_isUpdating = false

  stopRendering: ->
