Getting things working for visionOS

Package.swift

@@ -1,10 +1,10 @@
-// swift-tools-version: 5.5
+// swift-tools-version: 5.9
 
 import PackageDescription
 
 let package = Package(
  name: "Controls",
- platforms: [.macOS(.v12), .iOS(.v15)],
+ platforms: [.macOS(.v12), .iOS(.v15), .visionOS(.v1)],
  products: [.library(name: "Controls", targets: ["Controls"])],
  targets: [
  .target(name: "Controls", dependencies: []),

Sources/Controls/Implementations/SmallKnob.swift

@@ -21,6 +21,15 @@ public struct SmallKnob: View {
  Double((value - range.lowerBound) / (range.upperBound - range.lowerBound))
  }
 
+ var offsetX: CGFloat {
+ -sin(normalizedValue * 1.6 * .pi + 0.2 * .pi) / 2.0 * 0.75
+ }
+
+ var offsetY: CGFloat {
+ cos(normalizedValue * 1.6 * .pi + 0.2 * .pi) / 2.0 * 0.75
+ }
+
+
  public var body: some View {
  Control(value: $value, in: range,
  geometry: .twoDimensionalDrag(xSensitivity: 1, ySensitivity: 1)) { geo in
@@ -29,8 +38,7 @@ public struct SmallKnob: View {
  Rectangle().foregroundColor(foregroundColor)
  .frame(width: geo.size.width / 20, height: geo.size.height / 4)
  .rotationEffect(Angle(radians: normalizedValue * 1.6 * .pi + 0.2 * .pi))
- .offset(x: -sin(normalizedValue * 1.6 * .pi + 0.2 * .pi) * geo.size.width / 2.0 * 0.75,
- y: cos(normalizedValue * 1.6 * .pi + 0.2 * .pi) * geo.size.height / 2.0 * 0.75)
+ .offset(x: offsetX * Double(geo.size.width), y: offsetY * Double(geo.size.height))
  }.drawingGroup() // Drawing groups improve antialiasing of rotated indicator
  }
  .aspectRatio(CGSize(width: 1, height: 1), contentMode: .fit)

Sources/Controls/SingleTouchView.swift

@@ -2,7 +2,7 @@ import SwiftUI
 
 public typealias TouchCallback = (CGPoint?) -> Void
 
-#if os(iOS)
+#if !os(macOS)
 
 import UIKit