 
 open class CPTimeMachineLayoutConfiguration: CPLayoutConfiguration {
     
-    public var visibleCount:Int = 1
+    public var visibleCount = 0
     public var minCellSize = CGSize(width: 50, height: 50)
     public var scaleFactor: CGFloat = 0.5//(0, 1)
     public var spacingX: CGFloat = 20

        var topItemIndex: CGFloat

        if configuration.reversed {
            topItemIndex = CGFloat(cellCount-1)-collectionView.contentOffset.y/configuration.cellSize.height
        } else {
            topItemIndex = collectionView.contentOffset.y/configuration.cellSize.height
        }
        
        return topItemIndex

            spacingY = spacing
        }
    }
    
    public var reversed: Bool = false
    
}
