0025254: Protection on null pcurves in tgtfaces BRepLib

Check is pcurves are present is implemented.

diff --git a/src/BRepLib/BRepLib.cxx b/src/BRepLib/BRepLib.cxx
index f339ab58286c8c808c9ad9a7e512db7fab3c2f6b..1ff393d4040a3c684e807ca6609419ad1de08ab5 100644 (file)
--- a/src/BRepLib/BRepLib.cxx
+++ b/src/BRepLib/BRepLib.cxx
@@ -1484,6 +1484,16 @@ static Standard_Boolean tgtfaces(const TopoDS_Edge& Ed,
   const Standard_Real ta,
   const Standard_Boolean couture)
 {
+  // Check if pcurves exist on both faces of edge
+  Standard_Real aFirst,aLast;
+  Handle(Geom2d_Curve) aCurve;
+  aCurve = BRep_Tool::CurveOnSurface(Ed,F1,aFirst,aLast);
+  if(aCurve.IsNull())
+    return Standard_False;
+  aCurve = BRep_Tool::CurveOnSurface(Ed,F2,aFirst,aLast);
+  if(aCurve.IsNull())
+    return Standard_False;
+
   Standard_Real u;
   TopoDS_Edge E = Ed;
   BRepAdaptor_Surface aBAS1(F1,Standard_False);