Marking properties as State will trigger a new snapshot of your view each time they’re modified. These can be automatically interpolated by SwiftUI…

…larger version of it: presented, and dismissed, with a neat animation. First, as is often the case in SwiftUI, you’ll need a property to hold some of your state. Namely, whether the thumbnail is zoomed or not. A simple Boolean will suffice for that purpose. struct ContentView : View { @State…

Every animation in SwiftUI is based on a simple principle: an animation is a change in value or state over time…

…always, remember that all layout changes on screen in SwiftUI are triggered by changes to your state. Currently, you have a single state property which sets which leaf is currently animated. SwiftUI can cope with more complex state though. It’s re-rendering everything anyway, so it’s no problem…

With that last addition of a gesture driven, interactive animation, your tour of Animation in SwiftUI is complete! Here are some key points to keep in mind, as you continue exploring: Shapes in SwiftUI adhere to the View protocol. So you can build intriguing animations: including transforming, fading…

…current leaf “goes around” and keeps animating indefinitely. However, like with our first color change effort in this course, this is not a “real”, “SwiftUI animation”. It’s just being driven by your timer. Since the state changes occur pretty quickly (between 6 and 7 times per second) they look…

…this point, you know plenty about creating animations with SwiftUI. But there is one last topic to cover: creating beautiful animations driven by the user…

…easily created an animation, in SwiftUI. But what is that “default” value that you used as a modifier for the animation modifier? Well, it’s a static property of the Animation type , and it represents an Animation instance . An “Animation” is a small collection of data that defines the properties…