trs123

import UIKit

// Swift rewrite challenge by Erica Sadun: http://ericasadun.com/2016/05/31/swift-rewrite-challenge/
// Starting point: https://gist.github.com/erica/157e20ea0c7e9f28a03a8b12448c8fd0


// My solution builds on a small framework I have written with some geometry extensions on CGVector, CGPoint, CGRect and CGSize
// I call it GeometryKit and include the relevant parts here. This makes geometric calculations so much easier to understand.

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