[ARKit] Update framework to Xcode 12 beta 5.

src/ARKit/ARSkeleton.cs

@@ -0,0 +1,24 @@
+using System;
+using System.ComponentModel;
+using System.Runtime.InteropServices;
+
+using Foundation;
+using ObjCRuntime;
+
+namespace ARKit {
+	public partial class ARSkeleton {
+
+		[iOS (14,0)]
+		[DllImport (Constants.ARKitLibrary)]
+		static extern IntPtr /* NSString */ ARSkeletonJointNameForRecognizedPointKey (/* NSString */ IntPtr recognizedPointKey);
+
+		[EditorBrowsable (EditorBrowsableState.Advanced)]
+		[iOS (14,0)]
+		public static NSString CreateJointName (NSString recognizedPointKey) {
+			if (recognizedPointKey == null)
+				throw new ArgumentNullException (nameof (recognizedPointKey));
+			var newNamePtr = ARSkeletonJointNameForRecognizedPointKey (recognizedPointKey.Handle);
+			return (newNamePtr == IntPtr.Zero) ? null : new NSString (newNamePtr);
+		}
+	}
+}

src/arkit.cs

@@ -196,7 +196,7 @@ public enum ARFrameSemantics : long {
 		PersonSegmentationWithDepth = (1 << 1) | (1 << 0),
 		BodyDetection = 1 << 2,
 		[iOS (14,0)]
-		SceneDepth = (1 << 3),
+		SceneDepth = (1 << 4),
 	}
 
 	[iOS (13,0)]
@@ -475,6 +475,11 @@ interface ARFrame : NSCopying {
 		[iOS (14, 0)]
 		[NullAllowed, Export ("sceneDepth", ArgumentSemantic.Strong)]
 		ARDepthData SceneDepth { get; }
+
+		[iOS (14, 0)]
+		[NullAllowed]
+		[Export ("smoothedSceneDepth", ArgumentSemantic.Strong)]
+		ARDepthData SmoothedSceneDepth { get; }
 	}
 
 	[iOS (11,0)]
@@ -1986,13 +1991,21 @@ interface ARSkeleton3D {
 		[Protected, Export ("jointLocalTransforms")]
 		IntPtr RawJointLocalTransforms { get; }
 
+		[EditorBrowsable (EditorBrowsableState.Advanced)]
 		[Export ("modelTransformForJointName:")]
 		[MarshalDirective (NativePrefix = "xamarin_simd__", Library = "__Internal")]
-		Matrix4 GetModelTransform ([BindAs (typeof (ARSkeletonJointName))] NSString jointName);
+		Matrix4 GetModelTransform (NSString jointName);
+
+		[Wrap ("GetModelTransform (jointName.GetConstant()!)")]
+		Matrix4 GetModelTransform (ARSkeletonJointName jointName);
 
+		[EditorBrowsable (EditorBrowsableState.Advanced)]
 		[Export ("localTransformForJointName:")]
 		[MarshalDirective (NativePrefix = "xamarin_simd__", Library = "__Internal")]
-		Matrix4 GetLocalTransform ([BindAs (typeof (ARSkeletonJointName))] NSString jointName);
+		Matrix4 GetLocalTransform (NSString jointName);
+
+		[Wrap ("GetLocalTransform (jointName.GetConstant()!)")]
+		Matrix4 GetLocalTransform (ARSkeletonJointName jointName);
 	}
 
 	[iOS (13,0)]
@@ -2004,9 +2017,13 @@ interface ARSkeleton2D {
 		[Protected, Export ("jointLandmarks")]
 		IntPtr RawJointLandmarks { get; }
 
+		[EditorBrowsable (EditorBrowsableState.Advanced)]
 		[Export ("landmarkForJointNamed:")]
 		[MarshalDirective (NativePrefix = "xamarin_simd__", Library = "__Internal")]
-		Vector2 GetLandmarkPoint ([BindAs (typeof (ARSkeletonJointName))] NSString jointName);
+		Vector2 GetLandmarkPoint (NSString jointName);
+
+		[Wrap ("GetLandmarkPoint (jointName.GetConstant()!)")]
+		Vector2 GetLandmarkPoint (ARSkeletonJointName jointName);
 	}
 
 	[iOS (13,0)]
@@ -2034,8 +2051,12 @@ interface ARSkeletonDefinition {
 		[NullAllowed, Export ("neutralBodySkeleton3D")]
 		ARSkeleton3D NeutralBodySkeleton3D { get; }
 
+		[EditorBrowsable (EditorBrowsableState.Advanced)]
 		[Export ("indexForJointName:")]
-		nuint GetJointIndex ([BindAs (typeof (ARSkeletonJointName))] NSString jointName);
+		nuint GetJointIndex (NSString? jointName);
+
+		[Wrap ("GetJointIndex (jointName.GetConstant()!)")]
+		nuint GetJointIndex (ARSkeletonJointName jointName);
 	}
 
 	[iOS (13,0)]

src/frameworks.sources

@@ -153,6 +153,7 @@ ARKIT_SOURCES = \
 	ARKit/ARFaceGeometry.cs \
 	ARKit/ARPlaneGeometry.cs \
 	ARKit/ARPointCloud.cs \
+	ARKit/ARSkeleton.cs \
 	ARKit/ARSkeleton3D.cs \
 	ARKit/ARSkeleton2D.cs \
 

tests/monotouch-test/ARKit/ARSkeletonTest.cs

@@ -0,0 +1,24 @@
+#if __IOS__
+
+using System;
+using System.Runtime.InteropServices;
+using System.Threading.Tasks;
+using ARKit;
+using Foundation;
+using NUnit.Framework;
+using ObjCRuntime;
+
+namespace monotouchtest.ARKit {
+	[TestFixture]
+	[Preserve (AllMembers = true)]
+	public class ARSkeletonTest {
+		[Test]
+		public void UnknonwPointTest ()
+		{
+			using (var notKnownPoint = new NSString ("nariz"))
+				Assert.IsNull (ARSkeleton.CreateJointName (notKnownPoint));
+		}
+
+	}
+}
+#endif