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๐Ÿ“ฆTimelineView

// declaration
struct TimelineView<Schedule, Content> where 
    Schedule : TimelineSchedule
struct TimelineBlobView: View {
    var body: some View {
        TimelineView(.animation) { context in
            
            let x = context.date.timeIntervalSinceReferenceDate
            let t = cos(x)
            
            Text("\(t)")
                .padding()
                .frame(width: 300)
                .border(.black)

            Canvas { context, size in
                context.fill(
                    path(in: size.rect, t: t),
                    with: .linearGradient(
                        Gradient(colors: [.pink, .blue]),
                        startPoint: size[0,0],
                        endPoint  : size[1,1]
                    )
                )
            }
        }
    }
    
    func path(in rect: CGRect, t: Double) -> Path {
        Path { path in
            path.move(to: rect[1.0, 0.4])
            path.addCurve(to: rect[0.6, 1.0], control1: rect[0.9, 0.8], control2: rect[0.9, 1.0])
            path.addCurve(to: rect[0.1, 0.6], control1: rect[0.4, 1.0], control2: rect[0.3, 0.8])
            path.addCurve(to: rect[0.3, 0.1*t], control1: rect[-0.1, 0.4], control2: rect[0.0, 0.2*t])
            path.addCurve(to: rect[1.0, 0.4], control1: rect[0.7, -0.1*t], control2: rect[1.0, 0.1])
            path.closeSubpath()
        }
    }
}
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