Gelatin

A SwiftUI package for creating elastic, stretchy animation effects that make views behave like Liquid Glass when dragged.

Overview

Inspired by iOS 26, Gelatin provides a customizable view modifier that adds an elastic, bouncy animation effect to any SwiftUI view. When users drag a view, it stretches and deforms naturally like Liquid Glass, then bounces back to its original position when released.

ScreenRecording_06-12-2025.01-36-37_1.mov

Installation

Swift Package Manager

Add Gelatin to your project through Xcode:

1. File → Add Package Dependencies
2. Enter: https://github.com/Polarizz/Gelatin
3. Click "Add Package"

Or add it to your Package.swift:

dependencies: [
    .package(url: "https://github.com/Polarizz/Gelatin", from: "1.0.0")
]

Usage

Basic Usage

import SwiftUI
import Gelatin

struct ContentView: View {
    var body: some View {
        Text("Drag Me!")
            .padding()
            .background(Color.blue)
            .foregroundColor(.white)
            .cornerRadius(10)
            .gelatinEffect() // That's it!
    }
}

Custom Parameters

Text("Custom Gelatin")
    .gelatinEffect(
        easingExponent: 0.5,
        maximumStretchFactor: 1.2,
        fullStretchDistance: 100,
        stretchAmplificationFactor: 5,
        dragAnimationDuration: 0.5,
        releaseAnimationDuration: 0.7,
        releaseBounceFactor: 0.8,
        pressedScaleFactor: 1.2
    )

Parameters

Parameter	Type	Default	Description
easingExponent	Double	0.333	Controls the rate of deformation
maximumStretchFactor	CGFloat	0.9	Maximum stretch amount (0.9 = 90% stretch)
fullStretchDistance	CGFloat	80	Distance for full stretch effect in points
stretchAmplificationFactor	CGFloat	3	Amplifies the stretch effect
dragAnimationDuration	Double	0.39	Duration of drag animation in seconds
releaseAnimationDuration	Double	0.5	Duration of release animation in seconds
releaseBounceFactor	Double	0.5	Extra bounce on release
pressedScaleFactor	CGFloat	1.1	Scale when pressed

Demo App

Check out the Gelatin-Demo/Gelatin-Demo.xcodeproj folder for a complete demo app with:

• Interactive parameter adjustment
• Real-time preview
• Reset functionality

Requirements

• iOS 16.0+ / iPadOS 16.0+
• Xcode 15.0+
• Swift 5.9+

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.