   showSeen: ->
     @universe.draw()
     vr = @visualRange()
-    @cell.drawRadius vr, false
     candidates = @cell.near @, vr
     seen = @universe.near @, vr, @visualAngle(), null, candidates
     for t in seen

          @geoData[ offset ]     = distance
          @geoData[ offset + 1 ] = sine
          @geoData[ offset + 2 ] = cosine
          @geoData[ offset + 3 ] = segment
          offset
      # produces a vector in the TrigPair direction with the given magnitude
      vector: ( offset, magnitude ) =>

  showHeard: ->
    @universe.draw()
    ar = @auditoryRange()
    candidates = @cell.near @, ar
    heard = @universe.near @, ar, 1, null, candidates
    for t in heard
