You can animate in individual views based on scroll position. Developed with SwiftUI. This library supports iOS/macOS.

Example	Vertical	Horizontal

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1. Scroller

   Scroller(.vertical, value: $valueV) {
       ForEach(0...5, id: \.self) { index in
           GeometryReader { proxy in
               ScrollerVContent(value: proxy.scrollerValue(.vertical))
           }
       }
   } lastContent: {
       Rectangle()
           .fill(Color.blue)
           .overlay(Text("LastView"))
           .foregroundColor(Color.white)
   }

2. Each view only needs to conform to the ScrollerContent protocol.

   struct ScrollerVContent: ScrollerContent {
   
       /// Bind each view's scroll-relative value. It is a value between 0 and 1.
       var value: CGFloat = 0
       
       var body: some View {
           GeometryReader { proxy in
               ScrollerInfoView(axes: .vertical, value: value, proxy: proxy)
                   .offset(y: proxy.size.height * value)
                   .padding(10)
               Rectangle().fill(Color.blue)
                   .frame(width: proxy.size.width * value, height: 5)
                   .offset(y: proxy.size.height * value)
           }
           .background(Color.orange.opacity(1.0 - value))
       }
   }

The Swift Package Manager is a tool for automating the distribution of Swift code and is integrated into the swift compiler. Once you have your Swift package set up, adding Scroller as a dependency is as easy as adding it to the dependencies value of your Package.swift.

dependencies: [
    .package(url: "https://github.com/jasudev/Scroller.git", .branch("main"))
]

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Scroller is available under the MIT license. See the LICENSE file for more info.