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LoopedView.swift
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LoopedView.swift
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//
// LoopedView.swift
// TestApp
//
// Created by Camille Khubbetdinov on 76..2021.
//
import Foundation
import SwiftUI
struct LoopedView<Content>: View where Content: View {
@Binding var isRotating: Bool
@Binding var rotationsPerSecond: Double
@State var initialAngle = 0.0
@ViewBuilder var content: () -> Content
let timePublisher = Timer.publish(
every: 0.1,
on: .current,
in: .default
).autoconnect()
var body: some View {
content()
.rotationEffect(Angle(degrees: initialAngle))
.onReceive(timePublisher, perform: { _ in
if isRotating {
withAnimation(.linear(duration: 1.0)) {
initialAngle += 36.0*rotationsPerSecond
}
initialAngle = initialAngle.truncatingRemainder(dividingBy: 360.0)
}
})
}
}
struct ExampleView: View {
@State var isRotating = false
@State var rotationsPerSecond = 1.0
var body: some View {
VStack {
LoopedView(
isRotating: $isRotating,
rotationsPerSecond: $rotationsPerSecond
) {
Text("The text being rotated with speed \(rotationsPerSecond)")
}
Slider(value: $rotationsPerSecond, in: 0.0...5.0)
Button("Stop rotating") { isRotating.toggle() }
}.padding()
}
}