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There are 8 episodes with tag 'animations'   Clear search
  • #449

    If you can describe your animation with a small number of parameters that interpolate over the animation, animation is pretty easy. But once you want to combine an arbitrary number of animatable data values, for instance an array of Doubles representing our points, then you have to resort to a custom VectorArithmetic implementation. In this episode we will create an AnimatableVector type that is capable of animating between arrays of Double values. We then use this type to animate between 2 sets of points using our waveform algorithm.

  • #448

    Animating in SwiftUI can seem like magic, until you want to animate something custom. In this episode we'll add animation to our frequency, amplitude, and phase parameters for our waveform by leveraging SwiftUI's AnimatableModifier protocol. We'll see how to implement the animatableData property with one, two, and ultimately all three parameters. We'll cover implicit and explicit animations, as well as the behavior when attempting to mix animations.

  • #446

    Simple animations in SwiftUI are refreshingly easy. However, some animations are deceptively tricky, as we don't have access to completion handlers. Animation is entirely state-based, so if we have an animation where an item needs to move and return to its original state, we need to take a different approach. In this episode we will model a bounce animation using a simple sine function, feeding in the time value t using SwiftUI's linear animation interpolation.

  • #399

    SwiftUI's declarative nature makes building UIs incredibly easy. In this episode we will build a wallet UI with cards. We will create a CardView so we can reuse it in multiple places. Then we will use transforms to alter it's size and position. Finally we will see how declarative animations work as we expand the cards apart.

  • #243

    Large File Downloads

    Wrapping up our custom download button, this time we focus on the highlighted image and depressed state of the button, as well as transitioning to and from the progress layer.

  • #242

    Large File Downloads

    In this episode we create a custom control to serve as our download button. We start by creating a circular progress indicator using CAShapeLayer, then move on to subclassing UIControl to provide our image view and touch handling.

  • #232

    UIView has an incredibly useful spring-based animation API, but it can be difficult to know what to use for the damping and initial spring velocity parameters. In this episode, we'll break down how to compute the velocity value using the values we get from our UIPanGestureRecognizer and a little math.

  • #135

    What good is a static layout? When specifying layout using constraints, we still need to provide transitions and other animations in our interfaces. We can do this quite easily by just animating between different sets of constraints.