Merge pull request #37 from johnsietsma/FeatheringTransformFixes

Don't transform mesh verts, they're already in plane space.

Assets/Prefabs/AR Point Cloud Debug Visualizer.prefab

     m_TransformParent: {fileID: 0}
     m_Modifications: []
     m_RemovedComponents: []
-  m_ParentPrefab: {fileID: 0}
+  m_SourcePrefab: {fileID: 0}
-  m_IsPrefabParent: 1
+  m_IsPrefabAsset: 1
-  m_PrefabParentObject: {fileID: 0}
+  m_CorrespondingSourceObject: {fileID: 0}
-  serializedVersion: 5
+  serializedVersion: 6
   m_Component:
   - component: {fileID: 4459255792954120}
   - component: {fileID: 198296754606205776}
 --- !u!4 &4459255792954120
 Transform:
   m_ObjectHideFlags: 1
-  m_PrefabParentObject: {fileID: 0}
+  m_CorrespondingSourceObject: {fileID: 0}
   m_PrefabInternal: {fileID: 100100000}
   m_GameObject: {fileID: 1854016325464908}
   m_LocalRotation: {x: 0, y: 0, z: 0, w: 1}
 --- !u!114 &114143057649092886
 MonoBehaviour:
   m_ObjectHideFlags: 1
-  m_PrefabParentObject: {fileID: 0}
+  m_CorrespondingSourceObject: {fileID: 0}
   m_PrefabInternal: {fileID: 100100000}
   m_GameObject: {fileID: 1854016325464908}
   m_Enabled: 1
 --- !u!114 &114674181514608572
 MonoBehaviour:
   m_ObjectHideFlags: 1
-  m_PrefabParentObject: {fileID: 0}
+  m_CorrespondingSourceObject: {fileID: 0}
   m_PrefabInternal: {fileID: 100100000}
   m_GameObject: {fileID: 1854016325464908}
   m_Enabled: 1
 --- !u!198 &198296754606205776
 ParticleSystem:
   m_ObjectHideFlags: 1
-  m_PrefabParentObject: {fileID: 0}
+  m_CorrespondingSourceObject: {fileID: 0}
   m_PrefabInternal: {fileID: 100100000}
   m_GameObject: {fileID: 1854016325464908}
   serializedVersion: 5
     m_Mesh: {fileID: 0}
     m_MeshRenderer: {fileID: 0}
     m_SkinnedMeshRenderer: {fileID: 0}
+    m_Sprite: {fileID: 0}
+    m_SpriteRenderer: {fileID: 0}
     m_UseMeshMaterialIndex: 0
     m_UseMeshColors: 1
     alignToDirection: 0
           m_PostInfinity: 2
           m_RotationOrder: 4
   EmissionModule:
-    enabled: 0
+    enabled: 1
     serializedVersion: 4
     rateOverTime:
       serializedVersion: 2
     vectorLabel1_3: W
 --- !u!199 &199567844588220584
 ParticleSystemRenderer:
-  serializedVersion: 5
+  serializedVersion: 6
-  m_PrefabParentObject: {fileID: 0}
+  m_CorrespondingSourceObject: {fileID: 0}
   m_PrefabInternal: {fileID: 100100000}
   m_GameObject: {fileID: 1854016325464908}
   m_Enabled: 1
   m_Pivot: {x: 0, y: 0, z: 0}
   m_UseCustomVertexStreams: 0
   m_EnableGPUInstancing: 1
+  m_ApplyActiveColorSpace: 0
   m_VertexStreams: 00010304
   m_Mesh: {fileID: 0}
   m_Mesh1: {fileID: 0}

Assets/Scripts/ARFeatheredPlaneMeshVisualizer.cs

     float m_FeatheringWidth = 0.2f;
 
     ARPlaneMeshVisualizer m_PlaneMeshVisualizer;
-    ARPlane m_ARPlane;
-        m_ARPlane = GetComponent<ARPlane>();
         m_FeatheredPlaneMaterial = GetComponent<MeshRenderer>().material;
     }
 
     /// <remarks>
     /// The <c>ARPlaneMeshVisualizer</c> has a <c>meshUpdated</c> event that can be used to modify the generated
     /// mesh. In this case we'll add UV2s to mark the boundary vertices.
-    /// This technique avoids having to generate extra vertices for the boundary. It works best when the shape is 
-    /// is fairly uniform and the center vert is close to the barycentric center.
+    /// This technique avoids having to generate extra vertices for the boundary. It works best when the plane is 
+    /// is fairly uniform.
     /// </remarks>
     /// <param name="mesh">The <c>Mesh</c> generated by <c>ARPlaneMeshVisualizer</c></param>
     void GenerateBoundaryUVs(Mesh mesh)
         s_FeatheringUVs.Clear();
         if (s_FeatheringUVs.Capacity < vertexCount) { s_FeatheringUVs.Capacity = vertexCount; }
 
-        // Figure out where the plane center is in plane-local space (it's in session-local space)
-        BoundedPlane boundedPlane = m_ARPlane.boundedPlane;
-        Pose planePose = boundedPlane.Pose;
-        Vector3 centerInPlaneSpace = planePose.InverseTransformPosition(boundedPlane.Center);
-
+        Vector3 centerInPlaneSpace = s_Vertices[s_Vertices.Count - 1];
-
-            float vertexDist = Vector3.Distance(planePose.InverseTransformPosition(s_Vertices[i]), centerInPlaneSpace);
+            float vertexDist = Vector3.Distance(s_Vertices[i], centerInPlaneSpace);
-            float uvMapping = vertexDist / (vertexDist - featheringWidth);
+            float uvMapping = vertexDist / Mathf.Max(vertexDist - featheringWidth, 0.001f);
             uv.x = uvMapping;
 
             // All the UV mappings will be different. In the shader we need to know the UV value we need to fade out by.