Added boundary data provider (#86)

* Added boundary data provider

* updated packages

Runtime/Providers/BoundarySystem/WindowsMixedRealityBoundaryDataProvider.cs

@@ -0,0 +1,73 @@
+// Copyright (c) XRTK. All rights reserved.
+// Licensed under the MIT License. See LICENSE in the project root for license information.
+
+using System.Collections.Generic;
+using UnityEngine;
+using XRTK.Definitions;
+using XRTK.Interfaces.BoundarySystem;
+using XRTK.Services;
+
+#if WINDOWS_UWP
+using System.Linq;
+using Windows.Perception.Spatial;
+using XRTK.Extensions;
+#endif
+
+namespace XRTK.WindowsMixedReality.Providers.BoundarySystem
+{
+    [System.Runtime.InteropServices.Guid("e61b047a-56ac-421a-b5f7-683fd44dd33c")]
+    public class WindowsMixedRealityBoundaryDataProvider : BaseDataProvider, IMixedRealityBoundaryDataProvider
+    {
+        /// <inheritdoc />
+        public WindowsMixedRealityBoundaryDataProvider(string name, uint priority, BaseMixedRealityProfile profile, IMixedRealityBoundarySystem parentService)
+            : base(name, priority, profile, parentService)
+        {
+        }
+
+        #region IMixedRealityBoundaryDataProvider Implementation
+
+        /// <inheritdoc />
+        public bool IsPlatformBoundaryVisible
+        {
+            get => false; // TODO Unsure how to currently query the platform for this information.
+            set { }
+        }
+
+        /// <inheritdoc />
+        public bool IsPlatformConfigured
+        {
+            get
+            {
+#if WINDOWS_UWP
+                var currentStage = SpatialStageFrameOfReference.Current;
+                return currentStage != null && currentStage.MovementRange == SpatialMovementRange.Bounded;
+#else
+                return false;
+#endif
+            }
+        }
+
+        /// <inheritdoc />
+        public bool TryGetBoundaryGeometry(ref List<Vector3> geometry)
+        {
+#if WINDOWS_UWP
+            geometry.Clear();
+
+            var currentStage = SpatialStageFrameOfReference.Current;
+            var platformGeometry = currentStage?.TryGetMovementBounds(currentStage.CoordinateSystem);
+
+            if (platformGeometry == null)
+            {
+                return false;
+            }
+
+            geometry.AddRange(platformGeometry.Select(point => point.ToUnity()));
+            return true;
+#else
+            return false;
+#endif
+        }
+
+        #endregion  IMixedRealityBoundaryDataProvider Implementation
+    }
+}