If I do view.layer.shadowOffset = CGSize(width: -1, height: 1) what exactly does the numbers -1 for width, and 1 for height mean? How is the shadow determined from the CGSize passed? I found the documentation, but it's not very useful
How is CALayer.shadowOffset set from CGSize?
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Consider
widthandheightasxandy. And you should be aware in iOS coordinates start from top left.CGSize(width: -1, height: 1)means that the shadow will move 1 point to the left on x-axis and 1 point up on y-axis.