A SwiftUI transition for making views fall off the screen with a slight rotation effect.

FallWithRotation.swift

struct FallWithRotationModifier: ViewModifier {
  let isHidden: Bool
  
  var yOffset: CGFloat {
    return isHidden ? 1000 : 0
  }
  
  var rotationDegrees: Double {
    guard isHidden else { return 0 }
    let degrees = Double.random(in: 30...90)
    return Bool.random() ? degrees : -degrees
  }
  
  // Randomly lean to the left or right when falling.
  var anchor: UnitPoint {
    return Bool.random() ? .bottomLeading : .bottomTrailing
  }
  
  // Slowly fade out while transitioning.
  var opacity: Double {
    return isHidden ? 0 : 1
  }
  
  func body(content: Content) -> some View {
    content
      .rotationEffect(.degrees(rotationDegrees), anchor: anchor)
      .offset(x: 0, y: yOffset)
      .opacity(opacity)
  }
}

extension AnyTransition {
  static var fallOffscreenWithRotation: AnyTransition {
    .modifier(
      active: FallWithRotationModifier(isHidden: true),
      identity: FallWithRotationModifier(isHidden: false)
    )
  }
}