use spatial mapping if possible to find a good anchor position.

Author: darax

Assets/HoloToolkit/SharingWithUNET/Scenes/sharingwithunet.unity

@@ -109,6 +109,119 @@ NavMeshSettings:
     tileSize: 256
     accuratePlacement: 0
   m_NavMeshData: {fileID: 0}
+--- !u!1 &74016788
+GameObject:
+  m_ObjectHideFlags: 0
+  m_PrefabParentObject: {fileID: 0}
+  m_PrefabInternal: {fileID: 0}
+  serializedVersion: 5
+  m_Component:
+  - component: {fileID: 74016789}
+  - component: {fileID: 74016793}
+  - component: {fileID: 74016792}
+  - component: {fileID: 74016791}
+  - component: {fileID: 74016790}
+  m_Layer: 0
+  m_Name: New Text
+  m_TagString: Untagged
+  m_Icon: {fileID: 0}
+  m_NavMeshLayer: 0
+  m_StaticEditorFlags: 0
+  m_IsActive: 1
+--- !u!4 &74016789
+Transform:
+  m_ObjectHideFlags: 0
+  m_PrefabParentObject: {fileID: 0}
+  m_PrefabInternal: {fileID: 0}
+  m_GameObject: {fileID: 74016788}
+  m_LocalRotation: {x: 0, y: 0, z: 0, w: 1}
+  m_LocalPosition: {x: 0, y: 0.24, z: 0}
+  m_LocalScale: {x: 0.01, y: 0.01, z: 0.01}
+  m_Children: []
+  m_Father: {fileID: 106937171}
+  m_RootOrder: 2
+  m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
+--- !u!65 &74016790
+BoxCollider:
+  m_ObjectHideFlags: 0
+  m_PrefabParentObject: {fileID: 0}
+  m_PrefabInternal: {fileID: 0}
+  m_GameObject: {fileID: 74016788}
+  m_Material: {fileID: 0}
+  m_IsTrigger: 0
+  m_Enabled: 1
+  serializedVersion: 2
+  m_Size: {x: 72.799995, y: 13.406249, z: 0}
+  m_Center: {x: 36.399998, y: -6.703155, z: 0}
+--- !u!114 &74016791
+MonoBehaviour:
+  m_ObjectHideFlags: 0
+  m_PrefabParentObject: {fileID: 0}
+  m_PrefabInternal: {fileID: 0}
+  m_GameObject: {fileID: 74016788}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: 76bb4107aed53a54ca76f5b4fb92dc16, type: 3}
+  m_Name: 
+  m_EditorClassIdentifier: 
+--- !u!102 &74016792
+TextMesh:
+  serializedVersion: 3
+  m_ObjectHideFlags: 0
+  m_PrefabParentObject: {fileID: 0}
+  m_PrefabInternal: {fileID: 0}
+  m_GameObject: {fileID: 74016788}
+  m_Text: Reset Anchor
+  m_OffsetZ: 0
+  m_CharacterSize: 1
+  m_LineSpacing: 1
+  m_Anchor: 0
+  m_Alignment: 0
+  m_TabSize: 4
+  m_FontSize: 120
+  m_FontStyle: 0
+  m_RichText: 1
+  m_Font: {fileID: 10102, guid: 0000000000000000e000000000000000, type: 0}
+  m_Color:
+    serializedVersion: 2
+    rgba: 4279242986
+--- !u!23 &74016793
+MeshRenderer:
+  m_ObjectHideFlags: 0
+  m_PrefabParentObject: {fileID: 0}
+  m_PrefabInternal: {fileID: 0}
+  m_GameObject: {fileID: 74016788}
+  m_Enabled: 1
+  m_CastShadows: 1
+  m_ReceiveShadows: 1
+  m_MotionVectors: 1
+  m_LightProbeUsage: 1
+  m_ReflectionProbeUsage: 1
+  m_Materials:
+  - {fileID: 10100, guid: 0000000000000000e000000000000000, type: 0}
+  m_StaticBatchInfo:
+    firstSubMesh: 0
+    subMeshCount: 0
+  m_StaticBatchRoot: {fileID: 0}
+  m_ProbeAnchor: {fileID: 0}
+  m_LightProbeVolumeOverride: {fileID: 0}
+  m_ScaleInLightmap: 1
+  m_PreserveUVs: 0
+  m_IgnoreNormalsForChartDetection: 0
+  m_ImportantGI: 0
+  m_SelectedEditorRenderState: 3
+  m_MinimumChartSize: 4
+  m_AutoUVMaxDistance: 0.5
+  m_AutoUVMaxAngle: 89
+  m_LightmapParameters: {fileID: 0}
+  m_SortingLayerID: 0
+  m_SortingLayer: 0
+  m_SortingOrder: 0
+--- !u!4 &106937171 stripped
+Transform:
+  m_PrefabParentObject: {fileID: 4780174366001566, guid: 2617ed8230126704a992bd57fe1c7440,
+    type: 2}
+  m_PrefabInternal: {fileID: 1410349150}
 --- !u!1 &543313553
 GameObject:
   m_ObjectHideFlags: 0
@@ -270,6 +383,74 @@ MonoBehaviour:
   m_Name: 
   m_EditorClassIdentifier: 
   SendConnectionPort: 11000
+--- !u!1001 &1198442812
+Prefab:
+  m_ObjectHideFlags: 0
+  serializedVersion: 2
+  m_Modification:
+    m_TransformParent: {fileID: 0}
+    m_Modifications:
+    - target: {fileID: 4000013298573622, guid: 2ed75ffdf9031c94e8bce4b3d17b9928, type: 2}
+      propertyPath: m_LocalPosition.x
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 4000013298573622, guid: 2ed75ffdf9031c94e8bce4b3d17b9928, type: 2}
+      propertyPath: m_LocalPosition.y
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 4000013298573622, guid: 2ed75ffdf9031c94e8bce4b3d17b9928, type: 2}
+      propertyPath: m_LocalPosition.z
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 4000013298573622, guid: 2ed75ffdf9031c94e8bce4b3d17b9928, type: 2}
+      propertyPath: m_LocalRotation.x
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 4000013298573622, guid: 2ed75ffdf9031c94e8bce4b3d17b9928, type: 2}
+      propertyPath: m_LocalRotation.y
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 4000013298573622, guid: 2ed75ffdf9031c94e8bce4b3d17b9928, type: 2}
+      propertyPath: m_LocalRotation.z
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 4000013298573622, guid: 2ed75ffdf9031c94e8bce4b3d17b9928, type: 2}
+      propertyPath: m_LocalRotation.w
+      value: 1
+      objectReference: {fileID: 0}
+    - target: {fileID: 4000013298573622, guid: 2ed75ffdf9031c94e8bce4b3d17b9928, type: 2}
+      propertyPath: m_RootOrder
+      value: 8
+      objectReference: {fileID: 0}
+    - target: {fileID: 114000011154029958, guid: 2ed75ffdf9031c94e8bce4b3d17b9928,
+        type: 2}
+      propertyPath: drawVisualMeshes
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 114000012698980792, guid: 2ed75ffdf9031c94e8bce4b3d17b9928,
+        type: 2}
+      propertyPath: Extents.x
+      value: 4
+      objectReference: {fileID: 0}
+    - target: {fileID: 114000012698980792, guid: 2ed75ffdf9031c94e8bce4b3d17b9928,
+        type: 2}
+      propertyPath: Extents.y
+      value: 4
+      objectReference: {fileID: 0}
+    - target: {fileID: 114000012698980792, guid: 2ed75ffdf9031c94e8bce4b3d17b9928,
+        type: 2}
+      propertyPath: Extents.z
+      value: 4
+      objectReference: {fileID: 0}
+    - target: {fileID: 114000012698980792, guid: 2ed75ffdf9031c94e8bce4b3d17b9928,
+        type: 2}
+      propertyPath: TrianglesPerCubicMeter
+      value: 1500
+      objectReference: {fileID: 0}
+    m_RemovedComponents:
+    - {fileID: 114000012149591842, guid: 2ed75ffdf9031c94e8bce4b3d17b9928, type: 2}
+  m_ParentPrefab: {fileID: 100100000, guid: 2ed75ffdf9031c94e8bce4b3d17b9928, type: 2}
+  m_IsPrefabParent: 0
 --- !u!1001 &1203127917
 Prefab:
   m_ObjectHideFlags: 0

Assets/HoloToolkit/SharingWithUNET/Scripts/NetworkDiscoveryWithAnchors.cs

@@ -294,8 +294,8 @@ public void StartHosting(string SessionName)
             StartAsServer();
 
 #if !UNITY_EDITOR
-            // Start creating an anchor.
-            UNetAnchorManager.Instance.CreateAnchor();
+            // Invoke creating an anchor in a couple frames to give all the Unet network objects time to spawn.
+            Invoke("InvokeCreateAnchor", 0.25f);
 #else
             Debug.LogWarning("This script will need modification to work in the Unity Editor");
 #endif
@@ -304,6 +304,15 @@ public void StartHosting(string SessionName)
             SignalConnectionStatusEvent();
         }
 
+        /// <summary>
+        /// The UNetAnchorManager won't be ready immediately after a scene is started so we defer calling 
+        /// create anchor using unity's 'Invoke' on this function.
+        /// </summary>
+        void InvokeCreateAnchor()
+        {
+            UNetAnchorManager.Instance.CreateAnchor();
+        }
+
         /// <summary>
         /// Called when sessions have been added or removed
         /// </summary>