gistfile1.txt

struct WeightlifterKeyframes {
    var verticalScale: Double = 1.0
    var verticalOffset: Double = 0.0
}

private var weightlifterAnimation: some View {
    Image(systemName: "figure.strengthtraining.traditional")
        .resizable()
        .foregroundStyle(.white)
        .frame(width: 200, height: 200)
        .keyframeAnimator(
            initialValue: WeightlifterKeyframes(),
            repeating: true
        ) { view, keyframes in
            view
                .scaleEffect(y: keyframes.verticalScale, anchor: .bottom)
                .offset(y: keyframes.verticalOffset)
        } keyframes: { _ in
            KeyframeTrack(\.verticalScale) {
                LinearKeyframe(0.5, duration: 0.25)
                LinearKeyframe(1.0, duration: 0.25)
                LinearKeyframe(1.3, duration: 0.25)
                LinearKeyframe(1.0, duration: 0.25)
            }
            
            KeyframeTrack(\.verticalOffset) {
                LinearKeyframe(20, duration: 0.25)
                SpringKeyframe(-40, duration: 0.5, spring: .snappy)
                CubicKeyframe(0, duration: 0.25)
            }
        }
}