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Precipitations: Snow and Rain (#2360)
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101
Apps/Examples/Examples/SwiftUI Examples/PrecipitationsExample.swift
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,101 @@ | ||
| import SwiftUI | ||
| @_spi(Experimental) import MapboxMaps | ||
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| @available(iOS 14.0, *) | ||
| struct PrecipitationExample: View { | ||
| @State var viewport: Viewport = .camera(center: CLLocationCoordinate2D(latitude: 37.33464837343596, longitude: -122.00896178062911), zoom: 18, pitch: 80) | ||
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| @State var snowState: PrecipitationState = .none | ||
| @State var rainState: PrecipitationState = .none | ||
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| enum PrecipitationState: CaseIterable { | ||
| case none, light, medium, heavy | ||
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| var intensity: Double { | ||
| switch self { | ||
| case .none: return 0 | ||
| case .light: return 0.2 | ||
| case .medium: return 0.6 | ||
| case .heavy: return 1.0 | ||
| } | ||
| } | ||
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| var opacity: Double { | ||
| switch self { | ||
| case .none: return 0 | ||
| case .light: return 0.3 | ||
| case .medium: return 0.5 | ||
| case .heavy: return 0.8 | ||
| } | ||
| } | ||
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| var snowIcon: String { | ||
| switch self { | ||
| case .none: return "snowflake" | ||
| case .light: return "cloud.hail" | ||
| case .medium: return "cloud.hail.fill" | ||
| case .heavy: return "cloud.snow.fill" | ||
| } | ||
| } | ||
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| var rainIcon: String { | ||
| switch self { | ||
| case .none: return "drop" | ||
| case .light: return "cloud.drizzle" | ||
| case .medium: return "cloud.drizzle.fill" | ||
| case .heavy: return "cloud.rain.fill" | ||
| } | ||
| } | ||
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| mutating func toggle() { | ||
| let allCases = PrecipitationState.allCases | ||
| let currentIndex = allCases.firstIndex(of: self)! | ||
| let nextIndex = (currentIndex + 1) % allCases.count | ||
| self = allCases[nextIndex] | ||
| } | ||
| } | ||
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| var body: some View { | ||
| Map(viewport: $viewport) { | ||
| Puck2D(bearing: .heading) | ||
| if snowState != .none { | ||
| Snow() | ||
| .intensity(snowState.intensity) | ||
| .opacity(snowState.opacity) | ||
| .vignette(0.5) | ||
| } | ||
| if rainState != .none { | ||
| Rain() | ||
| .intensity(rainState.intensity) | ||
| .opacity(rainState.opacity) | ||
| .vignette(0.2) | ||
| .color(.blue.withAlphaComponent(0.4)) | ||
| } | ||
| } | ||
| .mapStyle(.standard) | ||
| .ignoresSafeArea() | ||
| .safeOverlay(alignment: .trailing) { | ||
| VStack { | ||
| Button { | ||
| snowState.toggle() | ||
| } label: { | ||
| Image(systemName: snowState.snowIcon) | ||
| } | ||
| .buttonStyle(MapFloatingButtonStyle()) | ||
| Button { | ||
| rainState.toggle() | ||
| } label: { | ||
| Image(systemName: rainState.rainIcon) | ||
| } | ||
| .buttonStyle(MapFloatingButtonStyle()) | ||
| } | ||
| } | ||
| } | ||
| } | ||
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| @available(iOS 14.0, *) | ||
| struct PrecipitationExample_Preview: PreviewProvider { | ||
| static var previews: some View { | ||
| PrecipitationExample() | ||
| } | ||
| } |
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