Fixed getVertexArray().

bbiwarg/DataSource/IisuDataSource.cs

@@ -58,9 +58,7 @@ namespace bbiwarg.DataSource
             else
                 device.RegisterParameterHandle<int>("SOURCE.DEPTHSENSE.AmplitudeThreshold").Value = 100; // confidence-threshhold
 
-            frameRate = device.RegisterParameterHandle<float>("SOURCE.FrameRate");
-
-            
+            frameRate = device.RegisterParameterHandle<float>("SOURCE.FrameRate");
 
             // events
             device.EventManager.RegisterEventListener("DEVICE.Status", new Iisu.EventDelegates.Device.Status(onDeviceStatusChanged));
@@ -69,8 +67,7 @@ namespace bbiwarg.DataSource
             depthImage = device.RegisterDataHandle<Iisu.Data.IImageData>("SOURCE.CAMERA.DEPTH.Image");
             colorImage = device.RegisterDataHandle<Iisu.Data.IImageData>("SOURCE.CAMERA.COLOR.Image");
             confidenceImage = device.RegisterDataHandle<Iisu.Data.IImageData>("SOURCE.CAMERA.CONFIDENCE.Image");
-            vertexArray = device.RegisterDataHandle<Iisu.Data.Vertex[]>("SCENE.VertexArray");
-
+           
             handOpen[0] = device.RegisterDataHandle<bool>("CI.HAND1.IsOpen");
             handOpen[1] = device.RegisterDataHandle<bool>("CI.HAND2.IsOpen");
 
@@ -99,6 +96,8 @@ namespace bbiwarg.DataSource
         private void onDeviceStatusChanged(string eventName, DeviceStatus status)
         {
             active = status.HasFlag(Iisu.DeviceStatus.Playing);
+            if (vertexArray != null && !vertexArray.Valid && active)
+                vertexArray = device.RegisterDataHandle<Iisu.Data.Vertex[]>("SCENE.VertexArray");
         }
 
         public void start()
@@ -177,20 +176,27 @@ namespace bbiwarg.DataSource
         }
 
         public VertexArray getVertexArray()
-        {
-            int numVertices = vertexArray.Value.Length;
-
-            Vector[] positions = new Vector[numVertices];
-            Color4[] colors = new Color4[numVertices];
-
-            for (int i = 0; i < numVertices; ++i)
-            {
-                positions[i] = new DenseVector(vertexArray.Value[i].Position.ToArray());
-                Iisu.Data.Color4C color = vertexArray.Value[i].Color;
-                colors[i] = new Color4(color.A, color.R, color.G, color.B);
+        {
+            if (vertexArray != null && vertexArray.Valid)
+            {
+                int numVertices = vertexArray.Value.Length;
+
+                Vector[] positions = new Vector[numVertices];
+                Color4[] colors = new Color4[numVertices];
+
+                for (int i = 0; i < numVertices; ++i)
+                {
+                    positions[i] = new DenseVector(vertexArray.Value[i].Position.ToArray());
+                    Iisu.Data.Color4C color = vertexArray.Value[i].Color;
+                    colors[i] = new Color4(color.A, color.R, color.G, color.B);
+                }
+
+                return new VertexArray(positions, colors);
+            }
+            else
+            {
+                return new VertexArray(new DenseVector[0], new Color4[0]);
             }
-
-            return new VertexArray(positions, colors);
         }
 
         private void checkHandIndex(uint handIndex)