Created
July 19, 2024 10:45
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MeshGradient on watchOS 11
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| import SwiftUI | |
| import WatchConnectivity | |
| struct CurrentSongView: View { | |
| @EnvironmentObject var songInfoReceiver: SongInfoReceiver | |
| @State var t: Float = 0.0 | |
| @State var timer: Timer? | |
| var body: some View { | |
| NavigationStack { | |
| ZStack { | |
| if #available(watchOS 11.0, *) { | |
| MeshGradient(width: 3, height: 3, points: [ | |
| .init(0, 0), .init(0.5, 0), .init(1, 0), | |
| [sinInRange(-0.8...(-0.2), offset: 0.439, timeScale: 0.342, t: t), sinInRange(0.3...0.7, offset: 3.42, timeScale: 0.984, t: t)], | |
| [sinInRange(0.1...0.8, offset: 0.239, timeScale: 0.084, t: t), sinInRange(0.2...0.8, offset: 5.21, timeScale: 0.242, t: t)], | |
| [sinInRange(1.0...1.5, offset: 0.939, timeScale: 0.084, t: t), sinInRange(0.4...0.8, offset: 0.25, timeScale: 0.642, t: t)], | |
| [sinInRange(-0.8...0.0, offset: 1.439, timeScale: 0.442, t: t), sinInRange(1.4...1.9, offset: 3.42, timeScale: 0.984, t: t)], | |
| [sinInRange(0.3...0.6, offset: 0.339, timeScale: 0.784, t: t), sinInRange(1.0...1.2, offset: 1.22, timeScale: 0.772, t: t)], | |
| [sinInRange(1.0...1.5, offset: 0.939, timeScale: 0.056, t: t), sinInRange(1.3...1.7, offset: 0.47, timeScale: 0.342, t: t)] | |
| ], colors: songInfoReceiver.colors.map { Color(hex: $0) }) | |
| .onAppear { | |
| timer = Timer.scheduledTimer(withTimeInterval: 0.05, repeats: true) { _ in | |
| t += 0.01 | |
| } | |
| } | |
| .background(Color.black) | |
| .ignoresSafeArea() | |
| } else { | |
| // Fallback on earlier versions | |
| } | |
| if songInfoReceiver.hasSongInfo { | |
| ScrollView { | |
| VStack(alignment: .leading) { | |
| Text(songInfoReceiver.artist) | |
| .font(.subheadline) | |
| .foregroundStyle(.secondary) | |
| .padding(.bottom) | |
| Text(songInfoReceiver.lyrics) | |
| .font(.title3) | |
| .bold() | |
| } | |
| .padding() | |
| } | |
| .navigationTitle(songInfoReceiver.title) | |
| } else { | |
| ContentUnavailableView( | |
| "No Song Playing or Data Received", | |
| systemImage: "music.note", | |
| description: Text("Start playing a song on your iPhone to see the lyrics here.") | |
| ) | |
| } | |
| } | |
| } | |
| } | |
| } | |
| extension CurrentSongView { | |
| private func sinInRange(_ range: ClosedRange<Float>, offset: Float, timeScale: Float, t: Float) -> Float { | |
| let amplitude = (range.upperBound - range.lowerBound) / 2 | |
| let midPoint = (range.upperBound + range.lowerBound) / 2 | |
| return midPoint + amplitude * sin(timeScale * t + offset) | |
| } | |
| } | |
| extension SongInfoReceiver { | |
| var hasSongInfo: Bool { | |
| !title.isEmpty || !artist.isEmpty || !lyrics.isEmpty | |
| } | |
| } | |
| #Preview("With Song Info") { | |
| CurrentSongView() | |
| .environmentObject(SongInfoReceiver.mockWithSongInfo()) | |
| } | |
| #Preview("Without Song Info") { | |
| CurrentSongView() | |
| .environmentObject(SongInfoReceiver.mockWithoutSongInfo()) | |
| } |
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