Merge pull request #6 from Unity-Technologies/PlacedObjectFix

Improve readability of `PlaceOnPlane` component. Also the raycast hit buffer was not previously static, though it was meant to be. Fixed.

Assets/Scenes/SampleScene.unity

   m_ReflectionIntensity: 1
   m_CustomReflection: {fileID: 0}
   m_Sun: {fileID: 0}
-  m_IndirectSpecularColor: {r: 0.44657898, g: 0.4964133, b: 0.5748178, a: 1}
+  m_IndirectSpecularColor: {r: 0.44657898, g: 0.49641287, b: 0.5748173, a: 1}
   m_UseRadianceAmbientProbe: 0
 --- !u!157 &3
 LightmapSettings:
     y: 0
     width: 1
     height: 1
-  near clip plane: 0.3
-  far clip plane: 1000
-  field of view: 25.3
+  near clip plane: 0.1
+  far clip plane: 20
+  field of view: 60
-  m_Depth: -1
+  m_Depth: 0
   m_CullingMask:
     serializedVersion: 2
     m_Bits: 4294967295
   m_TargetEye: 3
   m_HDR: 1
-  m_AllowMSAA: 0
+  m_AllowMSAA: 1
-  m_ForceIntoRT: 1
+  m_ForceIntoRT: 0
   m_OcclusionCulling: 1
   m_StereoConvergence: 10
   m_StereoSeparation: 0.022
   m_Name: 
   m_EditorClassIdentifier: 
   m_LightEstimation: 0
-  m_TryToInstallUpdateIfNeeded: 1
+  m_AttemptUpdate: 1
 --- !u!4 &427002220
 Transform:
   m_ObjectHideFlags: 0
   m_Name: 
   m_EditorClassIdentifier: 
   m_Camera: {fileID: 282840813}
-  m_Scale: 1
 --- !u!4 &1335839535
 Transform:
   m_ObjectHideFlags: 0
   m_LocalRotation: {x: 0, y: 0, z: 0, w: 1}
-  m_LocalPosition: {x: 0, y: 1, z: -18}
+  m_LocalPosition: {x: 0, y: 0, z: 0}
   m_LocalScale: {x: 1, y: 1, z: 1}
   m_Children:
   - {fileID: 282840814}

Assets/Scripts/PlaceOnPlane.cs

         get { return m_PlacedPrefab; }
         set { m_PlacedPrefab = value; }
     }
-
+    
-    public GameObject placedObject { get; private set; }
+    public GameObject spawnedObject { get; private set; }
+    ARSessionOrigin m_SessionOrigin;
+    
+    static List<ARRaycastHit> s_Hits = new List<ARRaycastHit>();
+    
     void Awake()
     {
         m_SessionOrigin = GetComponent<ARSessionOrigin>();
     {
-        if (Input.touchCount == 0)
-            return;
-
-        var touch = Input.GetTouch(0);
-
-        var hits = s_RaycastHits;
-        
-        if (!m_SessionOrigin.Raycast(touch.position, hits, TrackableType.PlaneWithinPolygon))
-            return;
-
-        placementHit = hits[0];
-    }
-
-    ARSessionOrigin m_SessionOrigin;
-
-    ARRaycastHit m_PlacementHit;
-
-    ARRaycastHit placementHit
-    {
-        get { return m_PlacementHit; }
-        set
+        if (Input.touchCount > 0)
-            m_PlacementHit = value;
+            Touch touch = Input.GetTouch(0);
-            if (placedObject == null && m_PlacedPrefab != null)
+            if (m_SessionOrigin.Raycast(touch.position, s_Hits, TrackableType.PlaneWithinPolygon))
-                placedObject = Instantiate(m_PlacedPrefab);
-            }
+                Pose hitPose = s_Hits[0].pose;
-            if (placedObject != null)
-            {
-                var pose = m_PlacementHit.pose;
-                placedObject.transform.position = pose.position;
-                placedObject.transform.rotation = pose.rotation;
+                if (spawnedObject == null)
+                {
+                    spawnedObject = Instantiate(m_PlacedPrefab, hitPose.position, hitPose.rotation);
+                }
+                else
+                {
+                    spawnedObject.transform.position = hitPose.position;
+                }
-
-    List<ARRaycastHit> s_RaycastHits = new List<ARRaycastHit>();
 }