Fix the case of several sections if one is empty

diff --git a/src/GEOMImpl/GEOMImpl_PolylineDriver.cxx b/src/GEOMImpl/GEOMImpl_PolylineDriver.cxx
index 70f59b415fe6c620d388f3bdf93b863a4c23d8fc..632ba525d3feb7cb2a08f2e759e33466f267be00 100644 (file)
--- a/src/GEOMImpl/GEOMImpl_PolylineDriver.cxx
+++ b/src/GEOMImpl/GEOMImpl_PolylineDriver.cxx
@@ -143,6 +143,7 @@ Standard_Integer GEOMImpl_PolylineDriver::MakePolyline2D
   Standard_Integer iC = aClosedFlags->Lower();
   std::list <std::list <double> >::const_iterator anIter = aCoords.begin();
   BRep_Builder aBuilder;
+  Standard_Boolean isEmpty = Standard_True;
 
   if (aNbSections > 1) {
     aBuilder.MakeCompound(TopoDS::Compound(aShape));
@@ -160,20 +161,20 @@ Standard_Integer GEOMImpl_PolylineDriver::MakePolyline2D
         (*anIter, aClosedFlags->Value(iC), aWPlane);
     }
 
-    if (aSection.IsNull()) {
-      return 0;
-    }
-
     if (aNbSections > 1) {
       // There are multiple sections.
-      aBuilder.Add(aShape, aSection);
+      if (aSection.IsNull() == Standard_False) {
+        aBuilder.Add(aShape, aSection);
+        isEmpty = Standard_False;
+      }
     } else {
       // There is only one section.
-      aShape = aSection;
+      isEmpty = aSection.IsNull();
+      aShape  = aSection;
     }
   }
 
-  if (aShape.IsNull()) {
+  if (isEmpty) {
     return 0;
   }