0023625: New functionality building reflect lines on a shape

Adding test case for this fix; Small corrections

src/BRep/BRep_Tool.cdl

@@ -528,6 +528,13 @@ is
     raises
     	NullObject from Standard; -- If the edge or the faces are null.
 
+   HasContinuity(myclass; E      : Edge from TopoDS)
+   returns Boolean
+    
+	---Purpose: Returns True if the edge has regularity on some
+	--          two surfaces
+    raises
+    	NullObject from Standard; -- If the edge is null.
     
     -----------------------------------------------------------
     -----------------------------------------------------------

src/BRep/BRep_Tool.cxx

@@ -1117,6 +1117,25 @@ GeomAbs_Shape  BRep_Tool::Continuity(const TopoDS_Edge& E,
   return GeomAbs_C0;
 }
 
+//=======================================================================
+//function : HasContinuity
+//purpose  : Returns True if the edge is on some two surfaces.
+//=======================================================================
+
+Standard_Boolean BRep_Tool::HasContinuity(const TopoDS_Edge& E)
+{
+  BRep_ListIteratorOfListOfCurveRepresentation itcr
+    ((*((Handle(BRep_TEdge)*)&E.TShape()))->Curves());
+
+  for (; itcr.More(); itcr.Next())
+  {
+    const Handle(BRep_CurveRepresentation)& CR = itcr.Value();
+    if (CR->IsRegularity())
+      return Standard_True;
+  }
+  return Standard_False;
+}
+
 //=======================================================================
 //function : Pnt
 //purpose  : Returns the 3d point.