Book Image

Animating SwiftUI Applications

By : Stephen DeStefano
Book Image

Animating SwiftUI Applications

By: Stephen DeStefano

Overview of this book

Swift and SwiftUI are the backbone of Apple application development, making them a crucial skill set to learn. Animating SwiftUI Applications focuses on the creation of stunning animations, making you proficient in this declarative language and employing a minimal code approach. In this book, you'll start by exploring the fundamentals of SwiftUI and animation, before jumping into various projects that will cement these skills in practice. You will explore some simple projects, like animating circles, creating color spectrums with hueRotation, animating individual parts of an image, as well as combining multiple views together to produce dynamic creations. The book will then transition into more advanced animation projects that employ the GeometryReader, which helps align your animations across different devices, as well as creating word and color games. Finally, you will learn how to integrate the SpriteKit framework into our SwiftUI code to create scenes with wind, fire, rain, and or snow scene, along with adding physics, gravity, collisions, and particle emitters to your animations. By the end of this book, you’ll have created a number of different animation projects, and will have gained a deep understanding of SwiftUI that can be used for your own creations.
Table of Contents (18 chapters)

Animating our first circular gear

To begin with, let’s create a new project, which I’m calling Gears and Belts. Then, add the images for the project (which you can find in the GitHub repository provided in the Technical requirements section) by dragging and dropping the images into Swift’s asset catalog. The images we are using are singleGear, doubleGear, wormGear, motor, shaft, fan, and goldBackground.

In this section, we are going to start by animating a gear image around the z-axis, so let’s make a SwiftUI file that will handle creating all the gears we need (as we have done in previous projects, we are going to work on each element for the project in separate files, and then piece them together in ContentView to create the finished animations).

To do this, go to File | New | File, and then choose the SwiftUI View template. Alternatively, you can use the Mac shortcut Command + N to get to the same place more quickly. Whichever method you choose...