Fix error with GetExistingSubObjects

[modules/geom.git] / src / GEOMImpl / GEOMImpl_OffsetDriver.cxx

diff --git a/src/GEOMImpl/GEOMImpl_OffsetDriver.cxx b/src/GEOMImpl/GEOMImpl_OffsetDriver.cxx
index 665c7045e94cbf6a6c61fda36a9dc13b6c543107..edd84de19c8bc8c095ae7c31623de460d12f6896 100644 (file)
--- a/src/GEOMImpl/GEOMImpl_OffsetDriver.cxx
+++ b/src/GEOMImpl/GEOMImpl_OffsetDriver.cxx
@@ -1,4 +1,4 @@
-//  Copyright (C) 2007-2008  CEA/DEN, EDF R&D, OPEN CASCADE
+//  Copyright (C) 2007-2010  CEA/DEN, EDF R&D, OPEN CASCADE
 //
 //  Copyright (C) 2003-2007  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
 //  CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
@@ -19,6 +19,7 @@
 //
 //  See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
 //
+
 #include <Standard_Stream.hxx>
 
 #include <GEOMImpl_OffsetDriver.hxx>
@@ -37,6 +38,11 @@
 #include <Precision.hxx>
 #include <gp_Pnt.hxx>
 
+#include <BRepCheck_Analyzer.hxx>
+#include <ShapeFix_ShapeTolerance.hxx>
+#include <ShapeFix_Shape.hxx>
+
+#include <Standard_ConstructionError.hxx>
 #include <StdFail_NotDone.hxx>
 
 //=======================================================================
@@ -90,7 +96,22 @@ Standard_Integer GEOMImpl_OffsetDriver::Execute(TFunction_Logbook& log) const
                                       aTol);
     if (MO.IsDone()) {
       aShape = MO.Shape();
-    } else {
+      // 23.04.2010 skl for bug 21699 from Mantis
+      BRepCheck_Analyzer ana (aShape, Standard_True);
+      ana.Init(aShape);
+      if (!ana.IsValid()) {
+        ShapeFix_ShapeTolerance aSFT;
+        aSFT.LimitTolerance(aShape, Precision::Confusion(),
+                            Precision::Confusion(), TopAbs_SHAPE);
+        Handle(ShapeFix_Shape) aSfs = new ShapeFix_Shape(aShape);
+        aSfs->Perform();
+        aShape = aSfs->Shape();
+        ana.Init(aShape);
+        if (!ana.IsValid())
+          Standard_ConstructionError::Raise("Boolean operation aborted : non valid shape result");
+      }
+    }
+    else {
       StdFail_NotDone::Raise("Offset construction failed");
     }
   } else {