I am playing around with the keystoneCorrection filters. The properties that one can change are inputTopLeft, inputTopRight, inputBottomLeft, inputBottomRight, and inputFocalLength, The problem is that I cannot find any documentation as to how this filter works or any sample code. Would anyone have insights as to how this all works?

Hi, My UICollectionViewCell has a subview UIImageView, which has a mask CALayer that I control and that I add animations to. Recently, I noticed that the animation wasn't working and I was wondering why. I finally figured out that it depends on whether I apply my NSDIffableDataSourceSnapshot animated or not. The animation would only work as expected, if the snapshot is applied animated. This raised a question: What happens if the snapshot is applied without animation? And why is it affecting CABasicAnimation on a CALayer? I haven't found a solution for it yet, so I wanted to ask here in case anybody knows what's up. imageView.layer.mask = animationLayer animationLayer.removeAllAnimations() let animation = CABasicAnimation(keyPath: "locations") /// ... animationLayer.add(animation, forKey: "shimmer") This code runs when the cell is gathered from the collection view for an index path. dataSource.apply(snapshot, animatingDifferences: false) Is there any way to apply a snapshot without animation while keeping animations within the cell working correctly? Thanks