     y_avg = Math.round(y_sum/@numFrames)
     rad_x = Math.abs( (Math.max.apply null, [xs...]) - (Math.min.apply null, [xs...]) ) * 4
     rad_y = Math.abs( (Math.max.apply null, [ys...]) - (Math.min.apply null, [ys...]) )* 4
-    
+
     for surface in [@markingSurfaceList...]
       svgElement = surface.addShape 'ellipse', class: "prior-asteroid", opacity: 0.75, cx: x_avg, cy: y_avg, rx: rad_x, ry: rad_y, fill: "none", stroke: "rgb(20,200,20)", 'stroke-width': 4
 

  stopLoading: ->
    @el.removeClass 'loading'

  showExistingAsteroids: ->
    return if @TRAINING_SUBJECT is null
    xs = []
    ys = []
    x_sum = y_sum = null
    for priorAsteroid, i in [@TRAINING_SUBJECT.metadata.asteroids...]
      xs[i] = priorAsteroid.x
      ys[i] = priorAsteroid.y

      exit: ->
        @el.find('button[name="to-select"]').removeClass 'hidden'
        @el.find('.what-kind').hide()
        @removePriorAsteroids()

    asteroidTool:
      enter: ->
