CVS dif for first method of fixing:


Index: Rendering/vtkAssembly.cxx
===================================================================
RCS file: /cvsroot/VTK/VTK/Rendering/vtkAssembly.cxx,v
retrieving revision 1.57
diff -u -r1.57 vtkAssembly.cxx
--- Rendering/vtkAssembly.cxx	4 Jan 2005 20:56:39 -0000	1.57
+++ Rendering/vtkAssembly.cxx	2 Jun 2006 12:31:48 -0000
@@ -99,8 +99,29 @@
   vtkCollectionSimpleIterator sit;
   for ( this->Paths->InitTraversal(sit); (path = this->Paths->GetNextPath(sit)); )
     {
+	
+//DCS   fix visibility so that vtkAssembly turns off children
+//
+		vtkAssemblyNode *tNode;
+		bool tVisibility = true;
+
+		for(path->InitTraversal(); tNode = path->GetNextNode();) {
+
+			vtkProp3D *tProp = (vtkProp3D *) tNode->GetViewProp();
+
+			if(!tProp->GetVisibility()) {
+				tVisibility = false;
+				break;
+			}
+		}
+//DCS
+
     prop3D = (vtkProp3D *)path->GetLastNode()->GetViewProp();
-    if ( prop3D->GetVisibility() )
+
+//DCS
+//	if ( prop3D->GetVisibility() )
+	if (tVisibility)
+//DCS
       prop3D->SetAllocatedRenderTime(fraction, ren);
       prop3D->PokeMatrix(path->GetLastNode()->GetMatrix());
@@ -138,8 +159,29 @@
   vtkCollectionSimpleIterator sit;
   for ( this->Paths->InitTraversal(sit); (path = this->Paths->GetNextPath(sit)); )
     {
+	
+//DCS   fix visibility so that vtkAssembly turns off children
+//
+		vtkAssemblyNode *tNode;
+		bool tVisibility = true;
+
+		for(path->InitTraversal(); tNode = path->GetNextNode();) {
+
+			vtkProp3D *tProp = (vtkProp3D *) tNode->GetViewProp();
+
+			if(!tProp->GetVisibility()) {
+				tVisibility = false;
+				break;
+			}
+		}
+//DCS
+
     prop3D = (vtkProp3D *)path->GetLastNode()->GetViewProp();
-    if ( prop3D->GetVisibility() )
+
+//DCS
+//	if ( prop3D->GetVisibility() )
+	if (tVisibility)
+//DCS
       {
       prop3D->PokeMatrix(path->GetLastNode()->GetMatrix());
       prop3D->SetAllocatedRenderTime(fraction, ren);




CVS dif for second method of fixing:


Index: Rendering/vtkAssembly.cxx
===================================================================
RCS file: /cvsroot/VTK/VTK/Rendering/vtkAssembly.cxx,v
retrieving revision 1.57
diff -u -r1.57 vtkAssembly.cxx
--- Rendering/vtkAssembly.cxx	4 Jan 2005 20:56:39 -0000	1.57
+++ Rendering/vtkAssembly.cxx	2 Jun 2006 12:35:22 -0000
@@ -279,14 +283,18 @@
   for ( this->Parts->InitTraversal(pit); 
         (prop3D = this->Parts->GetNextProp3D(pit)); )
     {
-    path->AddNode(prop3D,prop3D->GetMatrix());
+	// only add in props which have visible parents
+	if ( prop3D->GetVisibility() )
+	  {
+      path->AddNode(prop3D,prop3D->GetMatrix());
 
-    // dive into the hierarchy
-    prop3D->BuildPaths(paths,path);
+      // dive into the hierarchy
+      prop3D->BuildPaths(paths,path);
 
-    // when returned, pop the last node off of the
-    // current path
-    path->DeleteLastNode();
+      // when returned, pop the last node off of the
+      // current path
+      path->DeleteLastNode();
+	  }
     }
 }