SwiftUI View for Rectangle

RectangleView.swift

struct RectangleView: View {
    var index: Int
    @State private var animate = false
    var publisher:PassthroughSubject<AnimationStatus, Never>
    var body: some View {
        Rectangle()
            .foregroundColor(Color.green)
            .frame(width: 50, height: 10)
            .opacity(animate ? 1: 0.2)
            .animation(.easeInOut)
            .onReceive(publisher) { (value) in
                switch value {
                case .start(let index):
                    if index == self.index {
                        self.animate = true
                    } else {
                        self.animate = false
                    }
                case .stop(let index):
                    if index == self.index {
                        self.animate = false
                    }
                case .stopAll:
                    self.animate = false
                }
        }
    }
}