SwiftUI Path Animations shape animation

Animation SwiftUI

June 25, 2025

Introduction

This packages contains SimilarShape and InterpolatedShape, both can be used to achieve shapes animations with SwiftUI.

How it works?

SimilarShape should be used when animating two or more similar paths. A path is similar to another one when having the same number and types of Path.Element. I.e.: two rects with different height, width and origin are considered similar, since the two paths are made by the same Path.Element but with different CGPoint.

InterpolatedShape should be used when animating two or more different paths. Internally, it will create a slighlty different path used for animation, by interpolating the original one.

Example

The attached example (Example/Example.xcodeproj) is using:

SimilarShape to perform the drag animation of the morphing circle 🔵, since the Path create starting from the original circle and the one create with the dragging point are essentially the same
InterpolatedShape to perform the animated trasformation from a circle and a rounded rectangle, being very different paths.

GitHub

View Github

#swift #swiftui #swiftui-example

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