       null
 
     up = ( x, y, event ) =>
+      [ x, y ] = @_.O.grid.nearest( [ x, y ], A )
       B = [ x, y ]
       group?.destroy()
       group = null


    move = ( x, y, event ) =>
      if group?
        if ! event.altKey
          B = [ x, y ]
        else

      null

    down = ( x, y ) =>
      [ x, y ] = @_.O.grid.nearest( [ x, y ], A )
      group = new Kinetic.Group()
      @_.layer.add( group )
      A = [ x, y ]
