From 6243f56466dd19bfdd45d13ed02c6e856824d09c Mon Sep 17 00:00:00 2001
From: gdd <gdd>
Date: Wed, 15 Jun 2011 13:19:24 +0000
Subject: [PATCH] rnc: Added a control in order to prevent the Shape driver
 from building invalid edges (edges without C1 continuity)

---
 src/GEOMImpl/GEOMImpl_ShapeDriver.cxx | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/GEOMImpl/GEOMImpl_ShapeDriver.cxx b/src/GEOMImpl/GEOMImpl_ShapeDriver.cxx
index 5d6d2c89b..f254c2a0c 100644
--- a/src/GEOMImpl/GEOMImpl_ShapeDriver.cxx
+++ b/src/GEOMImpl/GEOMImpl_ShapeDriver.cxx
@@ -789,7 +789,10 @@ Standard_Integer GEOMImpl_ShapeDriver::Execute(TFunction_Logbook& log) const
 
           concatcurve->SetValue(concatcurve->Lower(), Concat.BSplineCurve());
         }
-
+        // rnc : prevents the driver from building an edge without C1 continuity
+        if (concatcurve->Value(concatcurve->Lower())->Continuity()==GeomAbs_C0){
+          Standard_ConstructionError::Raise("Construction aborted : The given Wire has sharp bends between some Edges, no valid Edge can be built");
+        }
         ResEdge = BRepLib_MakeEdge(concatcurve->Value(concatcurve->Lower()),
                                    FirstVertex, LastVertex);
       }
-- 
2.39.2