From 9546e32b27125f16bb56e0a0da6a3b16eba2ed87 Mon Sep 17 00:00:00 2001
From: ouv <ouv@opencascade.com>
Date: Thu, 21 Mar 2013 10:02:26 +0000
Subject: [PATCH] Issue 0051810: TC7.2.0: Impossible to build presentation on
 family

---
 src/CONVERTOR/VISU_ConvertorDef_impl.hxx |  2 ++
 src/CONVERTOR/VISU_Structures_impl.cxx   | 15 ++++++++++++++-
 src/CONVERTOR/VISU_Structures_impl.hxx   |  5 +++++
 3 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/src/CONVERTOR/VISU_ConvertorDef_impl.hxx b/src/CONVERTOR/VISU_ConvertorDef_impl.hxx
index 061db3b2..5cbeb22f 100644
--- a/src/CONVERTOR/VISU_ConvertorDef_impl.hxx
+++ b/src/CONVERTOR/VISU_ConvertorDef_impl.hxx
@@ -48,12 +48,14 @@ class VISU_AppendFilter;
 
 class VISU_MergeFilter;
 class VISU_CommonCellsFilter;
+class vtkPassThroughFilter;
 
 namespace VISU
 {
   //---------------------------------------------------------------
   typedef vtkSmartPointer<VISU_MergeFilter> PMergeFilter;
   typedef vtkSmartPointer<VISU_CommonCellsFilter> PCommonCellsFilter;
+  typedef vtkSmartPointer<vtkPassThroughFilter> PPassThroughFilter;
   
   //---------------------------------------------------------------
   typedef vtkSmartPointer<vtkPolyData> PPolyData;
diff --git a/src/CONVERTOR/VISU_Structures_impl.cxx b/src/CONVERTOR/VISU_Structures_impl.cxx
index 96d596d1..a86a6e32 100644
--- a/src/CONVERTOR/VISU_Structures_impl.cxx
+++ b/src/CONVERTOR/VISU_Structures_impl.cxx
@@ -39,6 +39,7 @@
 #include <vtkPolyData.h>
 #include <vtkCellType.h>
 #include <vtkCell.h>
+#include <vtkPassThroughFilter.h>
 
 namespace VISU
 {
@@ -329,6 +330,18 @@ namespace VISU
     return mySource;
   }
 
+  const PPassThroughFilter&
+  TUnstructuredGridHolder
+  ::GetFilter() const
+  {
+    if(!myFilter.GetPointer()){
+      myFilter = vtkPassThroughFilter::New();
+      myFilter->Delete();
+      myFilter->SetInputData( GetSource() );
+    }
+    return myFilter;
+  }
+
   vtkUnstructuredGrid*
   TUnstructuredGridHolder
   ::GetUnstructuredGridOutput()
@@ -340,7 +353,7 @@ namespace VISU
   TUnstructuredGridHolder
   ::GetOutputPort()
   {
-    return NULL;
+    return GetFilter()->GetOutputPort();
   }
 
   unsigned long int
diff --git a/src/CONVERTOR/VISU_Structures_impl.hxx b/src/CONVERTOR/VISU_Structures_impl.hxx
index 2598cd95..c7e4629c 100644
--- a/src/CONVERTOR/VISU_Structures_impl.hxx
+++ b/src/CONVERTOR/VISU_Structures_impl.hxx
@@ -86,6 +86,10 @@ namespace VISU
     const PUnstructuredGrid& 
     GetSource() const;
 
+    //! This method allow to create corresponding VTK filter by demand (not at once)
+    const PPassThroughFilter& 
+    GetFilter() const;
+
     virtual
     vtkUnstructuredGrid* 
     GetUnstructuredGridOutput();
@@ -101,6 +105,7 @@ namespace VISU
 
   protected:
     mutable PUnstructuredGrid mySource;
+    mutable PPassThroughFilter myFilter;
   };
 
 
-- 
2.39.2