 	
 	func computeItemSize() -> CGSize {
 //		return CGSize(width: w, height: collectionView.bounds.height)
-		return CGSize(width: model.scaleRounded, height: collectionViewHeight)
+		return CGSize(width: model.scaleRounded, height: CollectionViewModel.height)
 //		return CGSize(width: w, height: 40)
 //		return CGSize(width: w, height: 150)
 	}

	var scaleRounded: CGFloat {
		return floor(scale + 0.5)
	}
}

class MyCollectionView: UICollectionView {

		}
	}
	
	override func viewWillLayoutSubviews() {
		super.viewWillLayoutSubviews()

