fixed issue with cacheSamples not having any effect.

Author: Thomasch-unity3d

AlembicImporter/Assets/UTJ/Alembic/Editor/Importer/AlembicImporter.cs

@@ -105,7 +105,7 @@ public override void OnImportAsset(AssetImportContext ctx)
 
             using (var abcStream = new AlembicStream(go, streamDescriptor))
             {
-                abcStream.AbcLoad(true);
+                abcStream.AbcLoad();
                 AbcStartTime = abcStream.AbcStartTime;
                 AbcEndTime = abcStream.AbcEndTime;
                 AbcFrameCount = abcStream.AbcFrameCount;

AlembicImporter/Assets/UTJ/Alembic/Scripts/Importer/AbcAPI.cs

@@ -341,12 +341,12 @@ public static float GetAspectRatio(aiAspectRatioMode mode)
             }
         }
 
-        public static void UpdateAbcTree(aiContext ctx, AlembicTreeNode node, float time, bool createMissingNodes=false)
+        public static void UpdateAbcTree(aiContext ctx, AlembicTreeNode node, float time, bool createMissingNodes=true)
         {
             var ic = new ImportContext
             {
                 alembicTreeNode = node,
-                //ss = aiTimeToSampleSelector(time),
+                ss = aiTimeToSampleSelector(time),
                 createMissingNodes = createMissingNodes,
                 objectsToDelete = new List<aiObject>()
             };

AlembicImporter/Assets/UTJ/Alembic/Scripts/Importer/AlembicStream.cs

@@ -149,36 +149,35 @@ public bool AbcUpdate(float time,float motionScale,bool interpolateSamples)
             return true;
         }
 
-        public void AbcLoad(bool createMissingNodes=false)
+        public void AbcLoad()
         {
             m_Time = 0.0f;
 
             m_Context = AbcAPI.aiCreateContext(alembicTreeRoot.linkedGameObj.GetInstanceID());
-            m_Loaded = AbcAPI.aiLoad(m_Context,m_StreamDesc.pathToAbc);
-
-            
 
-            if (m_Loaded)
-            {
-                var settings = m_StreamDesc.settings;
-                m_Config.swapHandedness = settings.swapHandedness;
-                m_Config.shareVertices = settings.shareVertices;
-                m_Config.swapFaceWinding = settings.swapFaceWinding;
-                m_Config.normalsMode = settings.normalsMode;
-                m_Config.tangentsMode = settings.tangentsMode;
-                m_Config.cacheSamples = settings.cacheSamples;
-                m_Config.treatVertexExtraDataAsStatics = settings.treatVertexExtraDataAsStatics;
-                m_Config.turnQuadEdges = settings.turnQuadEdges;
-                m_Config.aspectRatio = AbcAPI.GetAspectRatio(settings.aspectRatioMode);
-                m_Config.cacheTangentsSplits = true;
+            var settings = m_StreamDesc.settings;
+            m_Config.swapHandedness = settings.swapHandedness;
+            m_Config.shareVertices = settings.shareVertices;
+            m_Config.swapFaceWinding = settings.swapFaceWinding;
+            m_Config.normalsMode = settings.normalsMode;
+            m_Config.tangentsMode = settings.tangentsMode;
+            m_Config.cacheSamples = settings.cacheSamples;
+            m_Config.treatVertexExtraDataAsStatics = settings.treatVertexExtraDataAsStatics;
+            m_Config.turnQuadEdges = settings.turnQuadEdges;
+            m_Config.aspectRatio = AbcAPI.GetAspectRatio(settings.aspectRatioMode);
+            m_Config.cacheTangentsSplits = true;
 #if !UNITY_2017_3_OR_NEWER
-                m_Config.use32BitsIndexBuffer = settings.use32BitsIndexBuffer;
+            m_Config.use32BitsIndexBuffer = settings.use32BitsIndexBuffer;
 #else 
-                m_Config.use32BitsIndexBuffer = false;
+            m_Config.use32BitsIndexBuffer = false;
 #endif
                 AbcAPI.aiSetConfig(m_Context, ref m_Config);
 
-                AbcAPI.UpdateAbcTree(m_Context, alembicTreeRoot, m_Time, createMissingNodes);
+            m_Loaded = AbcAPI.aiLoad(m_Context,m_StreamDesc.pathToAbc);
+
+            if (m_Loaded)
+            {
+                AbcAPI.UpdateAbcTree(m_Context, alembicTreeRoot, m_Time);
                 AlembicStream.s_Streams.Add(this);
             }
             else

AlembicImporter/Assets/UTJ/Alembic/Scripts/Importer/AlembicStreamPlayer.cs

@@ -68,7 +68,7 @@ public void LoadStream()
         {
             if (streamDescriptor == null) return;
             Stream = new AlembicStream(gameObject, streamDescriptor);
-            Stream.AbcLoad(true);
+            Stream.AbcLoad();
             m_ForceUpdate = true;
         }
 

Plugin/abci/Importer/aiSchema.h

@@ -40,7 +40,6 @@ class aiSchemaBase
     void setSampleCallback(aiSampleCallback cb, void *arg);
     void invokeConfigCallback(aiConfig *config) const;
     void invokeSampleCallback(aiSampleBase *sample, bool topologyChanged) const;
-    virtual void            cacheAllSamples() =0;
     virtual void cacheSamples(int64_t startIndex, int64_t endIndex)=0;
     virtual int             getTimeSamplingIndex() const = 0;
     virtual int             getNumSamples() const = 0;
@@ -125,19 +124,6 @@ class aiTSchema : public aiSchemaBase
         return static_cast<int>(m_numSamples);
     }
 
-    void cacheAllSamples() override
-    {
-        if (m_constant)
-            return;
-        readConfig();
-        for (int64_t i=0; i< m_numSamples ; i++)
-        {
-            auto &sp = m_samples[i];
-            bool unused = i == 0;
-            sp.reset(readSample(i, unused));
-        }
-    }
-
     void cacheSamples(int64_t startIndex, int64_t endIndex) override
     {
         if (m_constant)