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I'm attempting to retrieve the values of the Pencil Pro using the new PencilHoverPose, however according to the documentation it appears these can only be accessed while in a hover state (0 to ~0.5" from the screen).
Is there a way to get the orientation or roll values of the Apple Pencil Pro outside of a hover? I'm attempting to use the pencil as an input device, necessitating it be farther from the screen than 0.5"
Below is a simple view I'm using to display the available values:
import SwiftUI
import UIKit
struct PencilSqueezeView: View {
@State private var squeezeText: String = "Squeeze the Apple Pencil Pro"
@State private var hoverDistance: CGFloat = 0.0
@State private var anchor: UnitPoint = .center
@State private var location: CGPoint = .zero
@State private var altitude: Angle = .degrees(0)
@State private var azimuth: Angle = .degrees(0)
@State private var roll: Angle = .degrees(0)
var body: some View {
VStack {
Text(squeezeText)
.font(.largeTitle)
.padding()
Text("Hover Distance: \(String(format: "%.2f", hoverDistance))")
.font(.title2)
.padding()
Text("Anchor: \(anchor)")
.font(.title2)
.padding()
Text("Location: \(location.x), \(location.y)")
.font(.title2)
.padding()
Text("Altitude: \(altitude.degrees)°")
.font(.title2)
.padding()
Text("Azimuth: \(azimuth.degrees)°")
.font(.title2)
.padding()
Text("Roll: \(roll.degrees)°")
.font(.title2)
.padding()
Spacer()
}
.onPencilSqueeze { phase in
handlePencilSqueeze(phase: phase)
if case let .ended(value) = phase {
if let hoverPose = value.hoverPose {
updateHoverPose(hoverPose)
} else {
print("hoverPose is nil")
}
}
}
.padding()
}
private func handlePencilSqueeze(phase: PencilSqueezeGesturePhase) {
switch phase {
case .active:
squeezeText = "Squeeze began"
case .ended:
squeezeText = "Squeeze ended"
case .failed:
squeezeText = "Squeeze failed"
}
}
private func updateHoverPose(_ hoverPose: PencilHoverPose) {
hoverDistance = hoverPose.zDistance
anchor = hoverPose.anchor
location = hoverPose.location
altitude = hoverPose.altitude
azimuth = hoverPose.azimuth
roll = hoverPose.roll
print("zDistance: \(hoverPose.zDistance)")
print("anchor: \(hoverPose.anchor)")
print("location: \(hoverPose.location)")
print("altitude: \(hoverPose.altitude)")
print("azimuth: \(hoverPose.azimuth)")
print("roll: \(hoverPose.roll)")
}
}
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