Question 1

How do I create a sequence of animations with MotionMachine?

Accepted Answer

Use the MotionSequence class to chain Moveable objects sequentially. The README shows examples where motions are added in order, allowing keyframing or fluid compound animations with different easing equations and durations.

Question 2

MotionMachine or Core Animation: which is better for iOS apps?

Accepted Answer

MotionMachine offers more control and type-agnostic animation for custom classes, but Core Animation is better for performance-critical, layer-based animations with implicit support. Choose based on whether you need customization beyond UIKit/AppKit.

Question 3

Can I use MotionMachine with SwiftUI views?

Accepted Answer

Yes, the Examples project includes SwiftUI demos, but it requires bridging since MotionMachine is imperative and not natively declarative. You'll need to wrap animations in UIViewRepresentable or similar adapters.

Question 4

How to handle optional properties in key paths with MotionMachine?

Accepted Answer

You must provide a default value using the subscript format, e.g., \UIView.backgroundColor[default: .black], as noted in the README's caveats. This ensures safe interpolation without nil crashes.

Question 5

What easing equations does MotionMachine support?

Accepted Answer

It includes many easing equations like EasingQuartic, EasingElastic, EasingBack, and EasingQuadratic, with parameters for customization (e.g., overshoot). The code samples demonstrate their use in Motion classes.

Question 6

Is MotionMachine good for animating views along a path?

Accepted Answer

Yes, motion classes can animate a CGPoint along a CGPath, even partial segments, with support for additive animation. This is useful for creating complex movement patterns beyond linear transitions.

MotionMachine

What is MotionMachine?

Overview

Use Cases

Best For

Related Projects

Found a gem we're missing?

Not Ideal For

Pros & Cons

Pros

Cons

Frequently Asked Questions